about summary refs log tree commit diff
path: root/tests
diff options
context:
space:
mode:
Diffstat (limited to 'tests')
-rw-r--r--tests/codegen/debuginfo-inline-callsite-location.rs28
-rw-r--r--tests/codegen/issues/issue-115385-llvm-jump-threading.rs46
-rw-r--r--tests/codegen/lib-optimizations/iter-sum.rs15
-rw-r--r--tests/codegen/repr/transparent.rs1
-rw-r--r--tests/codegen/sanitizer/address-sanitizer-globals-tracking.rs43
-rw-r--r--tests/codegen/slice-as_chunks.rs6
-rw-r--r--tests/codegen/slice-iter-nonnull.rs6
-rw-r--r--tests/coverage-map/README.md13
-rw-r--r--tests/coverage-map/if.cov-map15
-rw-r--r--tests/coverage-map/if.rs9
-rw-r--r--tests/coverage-map/long_and_wide.cov-map32
-rw-r--r--tests/coverage-map/long_and_wide.rs150
-rw-r--r--tests/coverage-map/status-quo/abort.cov-map57
-rw-r--r--tests/coverage-map/status-quo/abort.rs66
-rw-r--r--tests/coverage-map/status-quo/assert.cov-map40
-rw-r--r--tests/coverage-map/status-quo/assert.rs32
-rw-r--r--tests/coverage-map/status-quo/async.cov-map340
-rw-r--r--tests/coverage-map/status-quo/async.rs128
-rw-r--r--tests/coverage-map/status-quo/async2.cov-map136
-rw-r--r--tests/coverage-map/status-quo/async2.rs57
-rw-r--r--tests/coverage-map/status-quo/closure.cov-map324
-rw-r--r--tests/coverage-map/status-quo/closure.rs220
-rw-r--r--tests/coverage-map/status-quo/closure_macro.cov-map40
-rw-r--r--tests/coverage-map/status-quo/closure_macro.rs40
-rw-r--r--tests/coverage-map/status-quo/closure_macro_async.cov-map48
-rw-r--r--tests/coverage-map/status-quo/closure_macro_async.rs77
-rw-r--r--tests/coverage-map/status-quo/conditions.cov-map261
-rw-r--r--tests/coverage-map/status-quo/conditions.rs86
-rw-r--r--tests/coverage-map/status-quo/continue.cov-map85
-rw-r--r--tests/coverage-map/status-quo/continue.rs69
-rw-r--r--tests/coverage-map/status-quo/dead_code.cov-map37
-rw-r--r--tests/coverage-map/status-quo/dead_code.rs37
-rw-r--r--tests/coverage-map/status-quo/drop_trait.cov-map21
-rw-r--r--tests/coverage-map/status-quo/drop_trait.rs33
-rw-r--r--tests/coverage-map/status-quo/generator.cov-map58
-rw-r--r--tests/coverage-map/status-quo/generator.rs30
-rw-r--r--tests/coverage-map/status-quo/generics.cov-map45
-rw-r--r--tests/coverage-map/status-quo/generics.rs44
-rw-r--r--tests/coverage-map/status-quo/if.cov-map15
-rw-r--r--tests/coverage-map/status-quo/if.rs28
-rw-r--r--tests/coverage-map/status-quo/if_else.cov-map25
-rw-r--r--tests/coverage-map/status-quo/if_else.rs40
-rw-r--r--tests/coverage-map/status-quo/inline-dead.cov-map45
-rw-r--r--tests/coverage-map/status-quo/inline-dead.rs27
-rw-r--r--tests/coverage-map/status-quo/inline.cov-map82
-rw-r--r--tests/coverage-map/status-quo/inline.rs51
-rw-r--r--tests/coverage-map/status-quo/inner_items.cov-map49
-rw-r--r--tests/coverage-map/status-quo/inner_items.rs57
-rw-r--r--tests/coverage-map/status-quo/issue-83601.cov-map28
-rw-r--r--tests/coverage-map/status-quo/issue-83601.rs14
-rw-r--r--tests/coverage-map/status-quo/issue-84561.cov-map233
-rw-r--r--tests/coverage-map/status-quo/issue-84561.rs182
-rw-r--r--tests/coverage-map/status-quo/issue-93054.cov-map24
-rw-r--r--tests/coverage-map/status-quo/issue-93054.rs30
-rw-r--r--tests/coverage-map/status-quo/lazy_boolean.cov-map223
-rw-r--r--tests/coverage-map/status-quo/lazy_boolean.rs61
-rw-r--r--tests/coverage-map/status-quo/loop_break_value.cov-map8
-rw-r--r--tests/coverage-map/status-quo/loop_break_value.rs13
-rw-r--r--tests/coverage-map/status-quo/loops_branches.cov-map193
-rw-r--r--tests/coverage-map/status-quo/loops_branches.rs60
-rw-r--r--tests/coverage-map/status-quo/match_or_pattern.cov-map83
-rw-r--r--tests/coverage-map/status-quo/match_or_pattern.rs43
-rw-r--r--tests/coverage-map/status-quo/nested_loops.cov-map51
-rw-r--r--tests/coverage-map/status-quo/nested_loops.rs25
-rw-r--r--tests/coverage-map/status-quo/no_cov_crate.cov-map78
-rw-r--r--tests/coverage-map/status-quo/no_cov_crate.rs88
-rw-r--r--tests/coverage-map/status-quo/overflow.cov-map43
-rw-r--r--tests/coverage-map/status-quo/overflow.rs63
-rw-r--r--tests/coverage-map/status-quo/panic_unwind.cov-map40
-rw-r--r--tests/coverage-map/status-quo/panic_unwind.rs31
-rw-r--r--tests/coverage-map/status-quo/partial_eq.cov-map64
-rw-r--r--tests/coverage-map/status-quo/partial_eq.rs46
-rw-r--r--tests/coverage-map/status-quo/simple_loop.cov-map28
-rw-r--r--tests/coverage-map/status-quo/simple_loop.rs35
-rw-r--r--tests/coverage-map/status-quo/simple_match.cov-map36
-rw-r--r--tests/coverage-map/status-quo/simple_match.rs43
-rw-r--r--tests/coverage-map/status-quo/sort_groups.cov-map68
-rw-r--r--tests/coverage-map/status-quo/sort_groups.rs23
-rw-r--r--tests/coverage-map/status-quo/test_harness.cov-map24
-rw-r--r--tests/coverage-map/status-quo/test_harness.rs10
-rw-r--r--tests/coverage-map/status-quo/tight_inf_loop.cov-map12
-rw-r--r--tests/coverage-map/status-quo/tight_inf_loop.rs5
-rw-r--r--tests/coverage-map/status-quo/try_error_result.cov-map226
-rw-r--r--tests/coverage-map/status-quo/try_error_result.rs118
-rw-r--r--tests/coverage-map/status-quo/unused.cov-map94
-rw-r--r--tests/coverage-map/status-quo/unused.rs41
-rw-r--r--tests/coverage-map/status-quo/while.cov-map15
-rw-r--r--tests/coverage-map/status-quo/while.rs5
-rw-r--r--tests/coverage-map/status-quo/while_early_ret.cov-map26
-rw-r--r--tests/coverage-map/status-quo/while_early_ret.rs42
-rw-r--r--tests/coverage-map/status-quo/yield.cov-map72
-rw-r--r--tests/coverage-map/status-quo/yield.rs37
-rw-r--r--tests/coverage-map/trivial.cov-map8
-rw-r--r--tests/coverage-map/trivial.rs3
-rw-r--r--tests/debuginfo/pretty-std-collections.rs1
-rw-r--r--tests/debuginfo/regression-bad-location-list-67992.rs31
-rw-r--r--tests/mir-opt/bool_compare.opt1.InstSimplify.diff3
-rw-r--r--tests/mir-opt/bool_compare.opt2.InstSimplify.diff3
-rw-r--r--tests/mir-opt/bool_compare.opt3.InstSimplify.diff3
-rw-r--r--tests/mir-opt/bool_compare.opt4.InstSimplify.diff3
-rw-r--r--tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir18
-rw-r--r--tests/mir-opt/building/custom/debuginfo.numbered.built.after.mir11
-rw-r--r--tests/mir-opt/building/custom/debuginfo.pointee.built.after.mir10
-rw-r--r--tests/mir-opt/building/custom/debuginfo.rs71
-rw-r--r--tests/mir-opt/building/custom/debuginfo.structured.built.after.mir10
-rw-r--r--tests/mir-opt/building/custom/debuginfo.variant.built.after.mir10
-rw-r--r--tests/mir-opt/building/custom/debuginfo.variant_deref.built.after.mir11
-rw-r--r--tests/mir-opt/building/logical_or_in_conditional.rs39
-rw-r--r--tests/mir-opt/building/logical_or_in_conditional.test_complex.built.after.mir186
-rw-r--r--tests/mir-opt/building/logical_or_in_conditional.test_or.built.after.mir87
-rw-r--r--tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff12
-rw-r--r--tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff6
-rw-r--r--tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-abort.diff6
-rw-r--r--tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-unwind.diff6
-rw-r--r--tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-abort.diff6
-rw-r--r--tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-unwind.diff6
-rw-r--r--tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.rs3
-rw-r--r--tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-abort.diff4
-rw-r--r--tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-unwind.diff4
-rw-r--r--tests/mir-opt/const_prop/indirect.main.ConstProp.panic-abort.diff4
-rw-r--r--tests/mir-opt/const_prop/indirect.main.ConstProp.panic-unwind.diff4
-rw-r--r--tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-abort.diff4
-rw-r--r--tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-unwind.diff4
-rw-r--r--tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-abort.diff8
-rw-r--r--tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-unwind.diff8
-rw-r--r--tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-abort.diff12
-rw-r--r--tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-unwind.diff12
-rw-r--r--tests/mir-opt/const_prop/large_array_index.rs1
-rw-r--r--tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff8
-rw-r--r--tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-abort.diff4
-rw-r--r--tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-unwind.diff4
-rw-r--r--tests/mir-opt/const_prop/repeat.rs1
-rw-r--r--tests/mir-opt/const_prop/return_place.add.ConstProp.panic-abort.diff4
-rw-r--r--tests/mir-opt/const_prop/return_place.add.ConstProp.panic-unwind.diff4
-rw-r--r--tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-abort.mir4
-rw-r--r--tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-unwind.mir4
-rw-r--r--tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-abort.diff12
-rw-r--r--tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-unwind.diff12
-rw-r--r--tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-abort.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-unwind.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-abort.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-unwind.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/array_index.rs8
-rw-r--r--tests/mir-opt/dataflow-const-prop/boolean_identities.rs10
-rw-r--r--tests/mir-opt/dataflow-const-prop/boolean_identities.test.DataflowConstProp.diff33
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.32bit.diff63
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.64bit.diff63
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.32bit.diff (renamed from tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.diff)0
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.64bit.diff82
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.32bit.diff (renamed from tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.diff)0
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.64bit.diff26
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.rs22
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.32bit.diff (renamed from tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.diff)0
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.64bit.diff63
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.32bit.diff126
-rw-r--r--tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.64bit.diff126
-rw-r--r--tests/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff10
-rw-r--r--tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-abort.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-unwind.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-abort.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-unwind.diff39
-rw-r--r--tests/mir-opt/dataflow-const-prop/large_array_index.rs9
-rw-r--r--tests/mir-opt/dataflow-const-prop/mult_by_zero.rs10
-rw-r--r--tests/mir-opt/dataflow-const-prop/mult_by_zero.test.DataflowConstProp.diff18
-rw-r--r--tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-abort.diff76
-rw-r--r--tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-unwind.diff76
-rw-r--r--tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-abort.diff72
-rw-r--r--tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-unwind.diff72
-rw-r--r--tests/mir-opt/dataflow-const-prop/offset_of.rs49
-rw-r--r--tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-abort.diff43
-rw-r--r--tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-unwind.diff43
-rw-r--r--tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-abort.diff43
-rw-r--r--tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-unwind.diff43
-rw-r--r--tests/mir-opt/dataflow-const-prop/repeat.rs8
-rw-r--r--tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-abort.diff77
-rw-r--r--tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-unwind.diff77
-rw-r--r--tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-abort.diff77
-rw-r--r--tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-unwind.diff77
-rw-r--r--tests/mir-opt/dataflow-const-prop/slice_len.rs12
-rw-r--r--tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.32bit.diff129
-rw-r--r--tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.64bit.diff129
-rw-r--r--tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff51
-rw-r--r--tests/mir-opt/dataflow-const-prop/struct.rs11
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.32bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.64bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.32bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.64bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.32bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.64bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.32bit.diff18
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.64bit.diff18
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.rs63
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.32bit.diff22
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.64bit.diff22
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.32bit.diff20
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.64bit.diff20
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.32bit.diff22
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.64bit.diff22
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.32bit.diff24
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.64bit.diff24
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.32bit.diff20
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.64bit.diff20
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.32bit.diff15
-rw-r--r--tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.64bit.diff15
-rw-r--r--tests/mir-opt/enum_opt.cand.EnumSizeOpt.32bit.diff4
-rw-r--r--tests/mir-opt/enum_opt.cand.EnumSizeOpt.64bit.diff4
-rw-r--r--tests/mir-opt/enum_opt.unin.EnumSizeOpt.32bit.diff4
-rw-r--r--tests/mir-opt/enum_opt.unin.EnumSizeOpt.64bit.diff4
-rw-r--r--tests/mir-opt/equal_true.opt.InstSimplify.diff3
-rw-r--r--tests/mir-opt/funky_arms.rs2
-rw-r--r--tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-abort.mir6
-rw-r--r--tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-unwind.mir6
-rw-r--r--tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir6
-rw-r--r--tests/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff3
-rw-r--r--tests/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff6
-rw-r--r--tests/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff6
-rw-r--r--tests/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff12
-rw-r--r--tests/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff6
-rw-r--r--tests/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff6
-rw-r--r--tests/mir-opt/inline/inline_diverging.g.Inline.panic-abort.diff3
-rw-r--r--tests/mir-opt/inline/inline_diverging.g.Inline.panic-unwind.diff3
-rw-r--r--tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-abort.diff8
-rw-r--r--tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-unwind.diff8
-rw-r--r--tests/mir-opt/issue_99325.main.built.after.32bit.mir (renamed from tests/mir-opt/issue_99325.main.built.after.mir)260
-rw-r--r--tests/mir-opt/issue_99325.main.built.after.64bit.mir276
-rw-r--r--tests/mir-opt/issue_99325.rs2
-rw-r--r--tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-abort.diff6
-rw-r--r--tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-unwind.diff6
-rw-r--r--tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-abort.diff6
-rw-r--r--tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-unwind.diff6
-rw-r--r--tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-abort.diff1
-rw-r--r--tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-unwind.diff1
-rw-r--r--tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-abort.diff6
-rw-r--r--tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-unwind.diff6
-rw-r--r--tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff24
-rw-r--r--tests/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir2
-rw-r--r--tests/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir2
-rw-r--r--tests/mir-opt/not_equal_false.opt.InstSimplify.diff3
-rw-r--r--tests/mir-opt/pre-codegen/chained_comparison.naive.PreCodegen.after.mir135
-rw-r--r--tests/mir-opt/pre-codegen/chained_comparison.returning.PreCodegen.after.mir30
-rw-r--r--tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir14
-rw-r--r--tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir6
-rw-r--r--tests/mir-opt/pre-codegen/mem_replace.mem_replace.PreCodegen.after.mir34
-rw-r--r--tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-abort.diff4
-rw-r--r--tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-unwind.diff4
-rw-r--r--tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-abort.diff4
-rw-r--r--tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-unwind.diff4
-rw-r--r--tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-abort.mir6
-rw-r--r--tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-unwind.mir6
-rw-r--r--tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-abort.mir6
-rw-r--r--tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-unwind.mir6
-rw-r--r--tests/mir-opt/pre-codegen/slice_filter.variant_a-{closure#0}.PreCodegen.after.mir204
-rw-r--r--tests/mir-opt/pre-codegen/slice_filter.variant_b-{closure#0}.PreCodegen.after.mir47
-rw-r--r--tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-abort.mir3
-rw-r--r--tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-unwind.mir3
-rw-r--r--tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-abort.mir47
-rw-r--r--tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-unwind.mir47
-rw-r--r--tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-abort.mir6
-rw-r--r--tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-unwind.mir6
-rw-r--r--tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-abort.mir86
-rw-r--r--tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-unwind.mir86
-rw-r--r--tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff3
-rw-r--r--tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff3
-rw-r--r--tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff10
-rw-r--r--tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff5
-rw-r--r--tests/pretty/tests-are-sorted.pp2
-rw-r--r--tests/run-coverage/closure_macro.coverage2
-rw-r--r--tests/run-coverage/closure_macro.rs2
-rw-r--r--tests/run-coverage/closure_macro_async.coverage14
-rw-r--r--tests/run-coverage/closure_macro_async.rs14
-rw-r--r--tests/run-coverage/lazy_boolean.coverage2
-rw-r--r--tests/run-coverage/no_cov_crate.coverage14
-rw-r--r--tests/run-coverage/no_cov_crate.rs14
-rw-r--r--tests/run-make-fulldeps/issue-19371/foo.rs1
-rw-r--r--tests/run-make-fulldeps/obtain-borrowck/driver.rs3
-rw-r--r--tests/run-make/compressed-debuginfo/Makefile15
-rw-r--r--tests/run-make/compressed-debuginfo/foo.rs3
-rw-r--r--tests/run-make/emit-path-unhashed/Makefile8
-rw-r--r--tests/run-make/issue-88756-default-output/output-default.stdout2
-rw-r--r--tests/run-make/ls-metadata/Makefile4
-rw-r--r--tests/run-make/lto-linkage-used-attr/Makefile9
-rw-r--r--tests/run-make/lto-linkage-used-attr/lib.rs50
-rw-r--r--tests/run-make/lto-linkage-used-attr/main.rs10
-rw-r--r--tests/run-make/metadata-dep-info/Makefile13
-rw-r--r--tests/run-make/metadata-dep-info/dash-separated.rs4
-rw-r--r--tests/run-make/metadata-dep-info/dash-separated_something-extra.normalized.d5
-rw-r--r--tests/run-make/output-filename-overwrites-input/Makefile2
-rw-r--r--tests/run-make/pdb-buildinfo-cl-cmd/Makefile16
-rw-r--r--tests/run-make/pdb-buildinfo-cl-cmd/main.rs2
-rw-r--r--tests/run-make/pdb-buildinfo-cl-cmd/stringlist.txt1
-rw-r--r--tests/run-make/pgo-branch-weights/Makefile1
-rw-r--r--tests/run-make/pgo-gen-lto/Makefile1
-rw-r--r--tests/run-make/pgo-gen/Makefile1
-rw-r--r--tests/run-make/pgo-indirect-call-promotion/Makefile1
-rw-r--r--tests/run-make/pgo-use/Makefile1
-rw-r--r--tests/run-make/pointer-auth-link-with-c/Makefile1
-rw-r--r--tests/run-make/print-cfg/Makefile8
-rw-r--r--tests/run-make/profile/Makefile1
-rw-r--r--tests/run-make/rustdoc-themes/Makefile3
-rw-r--r--tests/rustdoc-gui/code-color.goml18
-rw-r--r--tests/rustdoc-gui/help-page.goml18
-rw-r--r--tests/rustdoc-gui/search-no-result.goml12
-rw-r--r--tests/rustdoc-gui/search-result-color.goml2
-rw-r--r--tests/rustdoc-gui/sidebar-source-code.goml2
-rw-r--r--tests/rustdoc-gui/sidebar.goml18
-rw-r--r--tests/rustdoc-gui/src/theme_css/Cargo.lock7
-rw-r--r--tests/rustdoc-gui/src/theme_css/Cargo.toml7
-rw-r--r--tests/rustdoc-gui/src/theme_css/custom-theme.css99
-rw-r--r--tests/rustdoc-gui/src/theme_css/lib.rs2
-rw-r--r--tests/rustdoc-gui/theme-change.goml33
-rw-r--r--tests/rustdoc-js-std/full-path-function.js7
-rw-r--r--tests/rustdoc-js/full-path-function.js43
-rw-r--r--tests/rustdoc-js/full-path-function.rs17
-rw-r--r--tests/rustdoc-ui/custom_code_classes_in_docs-warning.rs85
-rw-r--r--tests/rustdoc-ui/custom_code_classes_in_docs-warning.stderr113
-rw-r--r--tests/rustdoc-ui/custom_code_classes_in_docs-warning3.rs17
-rw-r--r--tests/rustdoc-ui/custom_code_classes_in_docs-warning3.stderr33
-rw-r--r--tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.rs5
-rw-r--r--tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.stderr15
-rw-r--r--tests/rustdoc-ui/issues/issue-91713.stdout2
-rw-r--r--tests/rustdoc/auxiliary/cross_crate_generic_typedef.rs5
-rw-r--r--tests/rustdoc/const-generics/const-generic-defaults.rs2
-rw-r--r--tests/rustdoc/const-generics/const-generics-docs.rs4
-rw-r--r--tests/rustdoc/custom_code_classes.rs28
-rw-r--r--tests/rustdoc/inline_cross/auxiliary/dyn_trait.rs19
-rw-r--r--tests/rustdoc/inline_cross/dyn_trait.rs15
-rw-r--r--tests/rustdoc/issue-32077-type-alias-impls.rs66
-rw-r--r--tests/rustdoc/issue-88600.rs4
-rw-r--r--tests/rustdoc/private-fields-tuple-struct.rs15
-rw-r--r--tests/rustdoc/show-const-contents.rs2
-rw-r--r--tests/rustdoc/typedef-inner-variants-lazy_type_alias.rs34
-rw-r--r--tests/rustdoc/typedef-inner-variants.rs119
-rw-r--r--tests/rustdoc/where.SWhere_Simd_item-decl.html2
-rw-r--r--tests/rustdoc/where.alpha_trait_decl.html2
-rw-r--r--tests/rustdoc/where.rs2
-rw-r--r--tests/ui-fulldeps/plugin/lint-group-plugin-deny-cmdline.stderr2
-rw-r--r--tests/ui-fulldeps/plugin/lint-tool-cmdline-allow.stderr10
-rw-r--r--tests/ui-fulldeps/pprust-expr-roundtrip.rs20
-rw-r--r--tests/ui-fulldeps/session-diagnostic/diagnostic-derive-doc-comment-field.stderr2
-rw-r--r--tests/ui-fulldeps/stable-mir/compilation-result.rs77
-rw-r--r--tests/ui-fulldeps/stable-mir/crate-info.rs101
-rw-r--r--tests/ui/abi/compatibility.rs194
-rw-r--r--tests/ui/abi/debug.rs32
-rw-r--r--tests/ui/abi/debug.stderr713
-rw-r--r--tests/ui/argument-suggestions/two-mismatch-notes.stderr1
-rw-r--r--tests/ui/associated-consts/associated-const-array-len.stderr6
-rw-r--r--tests/ui/associated-consts/double-elided.rs12
-rw-r--r--tests/ui/associated-consts/double-elided.stderr47
-rw-r--r--tests/ui/associated-consts/issue-105330.stderr10
-rw-r--r--tests/ui/associated-inherent-types/private-in-public.rs21
-rw-r--r--tests/ui/associated-inherent-types/private-in-public.stderr52
-rw-r--r--tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr4
-rw-r--r--tests/ui/associated-type-bounds/suggest-removing-impl.rs14
-rw-r--r--tests/ui/associated-type-bounds/suggest-removing-impl.stderr26
-rw-r--r--tests/ui/associated-types/associated-types-ICE-when-projecting-out-of-err.stderr6
-rw-r--r--tests/ui/associated-types/associated-types-no-suitable-supertrait.stderr6
-rw-r--r--tests/ui/associated-types/defaults-suitability.stderr5
-rw-r--r--tests/ui/associated-types/issue-23595-2.stderr2
-rw-r--r--tests/ui/associated-types/issue-32323.rs (renamed from tests/ui/issues/issue-32323.rs)0
-rw-r--r--tests/ui/associated-types/issue-32323.stderr (renamed from tests/ui/issues/issue-32323.stderr)0
-rw-r--r--tests/ui/associated-types/issue-59324.stderr6
-rw-r--r--tests/ui/associated-types/issue-64855.stderr6
-rw-r--r--tests/ui/associated-types/issue-85103-layout-debug.rs9
-rw-r--r--tests/ui/associated-types/issue-85103-layout-debug.stderr16
-rw-r--r--tests/ui/associated-types/issue-85103.rs9
-rw-r--r--tests/ui/associated-types/issue-85103.stderr8
-rw-r--r--tests/ui/associated-types/point-at-type-on-obligation-failure-2.stderr15
-rw-r--r--tests/ui/async-await/async-is-unwindsafe.stderr2
-rw-r--r--tests/ui/async-await/in-trait/async-example-desugared-extra.rs7
-rw-r--r--tests/ui/async-await/in-trait/async-example-desugared.rs2
-rw-r--r--tests/ui/async-await/large_moves.attribute.stderr22
-rw-r--r--tests/ui/async-await/large_moves.option.stderr22
-rw-r--r--tests/ui/async-await/large_moves.rs18
-rw-r--r--tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.current.stderr27
-rw-r--r--tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.next.stderr11
-rw-r--r--tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.rs24
-rw-r--r--tests/ui/attributes/issue-115264-expr-field.rs17
-rw-r--r--tests/ui/attributes/issue-115264-pat-field.rs19
-rw-r--r--tests/ui/borrowck/issue-114374-invalid-help-fmt-args.rs16
-rw-r--r--tests/ui/borrowck/issue-114374-invalid-help-fmt-args.stderr33
-rw-r--r--tests/ui/borrowck/issue-115259-suggest-iter-mut.fixed20
-rw-r--r--tests/ui/borrowck/issue-115259-suggest-iter-mut.rs20
-rw-r--r--tests/ui/borrowck/issue-115259-suggest-iter-mut.stderr16
-rw-r--r--tests/ui/borrowck/issue-62387-suggest-iter-mut-2.fixed36
-rw-r--r--tests/ui/borrowck/issue-62387-suggest-iter-mut-2.rs36
-rw-r--r--tests/ui/borrowck/issue-62387-suggest-iter-mut-2.stderr16
-rw-r--r--tests/ui/borrowck/issue-62387-suggest-iter-mut.fixed30
-rw-r--r--tests/ui/borrowck/issue-62387-suggest-iter-mut.rs30
-rw-r--r--tests/ui/borrowck/issue-62387-suggest-iter-mut.stderr29
-rw-r--r--tests/ui/c-variadic/variadic-ffi-1.stderr2
-rw-r--r--tests/ui/c-variadic/variadic-ffi-2.rs5
-rw-r--r--tests/ui/c-variadic/variadic-ffi-2.stderr2
-rw-r--r--tests/ui/cast/cast-as-bool.rs40
-rw-r--r--tests/ui/cast/cast-as-bool.stderr56
-rw-r--r--tests/ui/cast/cast-rfc0401-2.rs2
-rw-r--r--tests/ui/cast/cast-rfc0401-2.stderr2
-rw-r--r--tests/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr3
-rw-r--r--tests/ui/closures/2229_closure_analysis/repr_packed.rs10
-rw-r--r--tests/ui/closures/2229_closure_analysis/repr_packed.stderr19
-rw-r--r--tests/ui/closures/issue-11873.rs (renamed from tests/ui/issues/issue-11873.rs)0
-rw-r--r--tests/ui/closures/issue-11873.stderr (renamed from tests/ui/issues/issue-11873.stderr)0
-rw-r--r--tests/ui/closures/issue-25439.rs (renamed from tests/ui/issues/issue-25439.rs)0
-rw-r--r--tests/ui/closures/issue-25439.stderr (renamed from tests/ui/issues/issue-25439.stderr)0
-rw-r--r--tests/ui/codegen/subtyping-enforces-type-equality.rs48
-rw-r--r--tests/ui/codegen/subtyping-enforces-type-equality.stderr1
-rw-r--r--tests/ui/coherence/coherence-unsafe-trait-object-impl.stderr5
-rw-r--r--tests/ui/coherence/warn-when-cycle-is-error-in-coherence.stderr4
-rw-r--r--tests/ui/const-generics/dont-evaluate-array-len-on-err-1.stderr6
-rw-r--r--tests/ui/const-generics/early/const-param-from-outer-fn.rs2
-rw-r--r--tests/ui/const-generics/early/const-param-from-outer-fn.stderr8
-rw-r--r--tests/ui/const-generics/generic_const_exprs/eval-privacy.rs7
-rw-r--r--tests/ui/const-generics/generic_const_exprs/eval-privacy.stderr21
-rw-r--r--tests/ui/const-generics/generic_const_exprs/issue-85848.stderr6
-rw-r--r--tests/ui/const-generics/issues/issue-86530.stderr5
-rw-r--r--tests/ui/const-generics/late-bound-vars/in_closure.rs7
-rw-r--r--tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.rs5
-rw-r--r--tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.stderr11
-rw-r--r--tests/ui/consts/const-eval/ub-uninhabit.rs16
-rw-r--r--tests/ui/consts/const-eval/ub-uninhabit.stderr14
-rw-r--r--tests/ui/consts/drop-maybe_uninit.rs17
-rw-r--r--tests/ui/consts/issue-105536-const-val-roundtrip-ptr-eq.rs31
-rw-r--r--tests/ui/cross/cross-fn-cache-hole.stderr5
-rw-r--r--tests/ui/derive-uninhabited-enum-38885.stderr1
-rw-r--r--tests/ui/deriving/deriving-all-codegen.stdout28
-rw-r--r--tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.rs4
-rw-r--r--tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.stderr6
-rw-r--r--tests/ui/diagnostic_namespace/non_existing_attributes_accepted.stderr2
-rw-r--r--tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.rs37
-rw-r--r--tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.stderr110
-rw-r--r--tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.rs7
-rw-r--r--tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.stderr12
-rw-r--r--tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.rs11
-rw-r--r--tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.stderr24
-rw-r--r--tests/ui/drop-bounds/drop-bounds-impl-drop.rs10
-rw-r--r--tests/ui/dst/dst-bad-coerce1.stderr10
-rw-r--r--tests/ui/dyn-star/error.stderr6
-rw-r--r--tests/ui/error-codes/E0040.stderr10
-rw-r--r--tests/ui/error-codes/E0054.stderr2
-rw-r--r--tests/ui/error-codes/E0220.stderr2
-rw-r--r--tests/ui/error-codes/E0277.stderr5
-rw-r--r--tests/ui/error-codes/E0401.stderr22
-rw-r--r--tests/ui/error-codes/E0445.rs23
-rw-r--r--tests/ui/error-codes/E0445.stderr71
-rw-r--r--tests/ui/error-codes/E0446.rs15
-rw-r--r--tests/ui/error-codes/E0446.stderr23
-rw-r--r--tests/ui/error-codes/E0602.rs2
-rw-r--r--tests/ui/error-codes/E0602.stderr11
-rw-r--r--tests/ui/error-codes/E0609-private-method.rs16
-rw-r--r--tests/ui/error-codes/E0609-private-method.stderr9
-rw-r--r--tests/ui/error-festival.stderr2
-rw-r--r--tests/ui/explicit/explicit-call-to-dtor.stderr10
-rw-r--r--tests/ui/explicit/explicit-call-to-supertrait-dtor.stderr10
-rw-r--r--tests/ui/expr/if/bad-if-let-suggestion.rs3
-rw-r--r--tests/ui/expr/if/bad-if-let-suggestion.stderr23
-rw-r--r--tests/ui/feature-gates/feature-gate-coverage-attribute.rs14
-rw-r--r--tests/ui/feature-gates/feature-gate-coverage-attribute.stderr21
-rw-r--r--tests/ui/feature-gates/feature-gate-no_coverage.rs13
-rw-r--r--tests/ui/feature-gates/feature-gate-no_coverage.stderr12
-rw-r--r--tests/ui/feature-gates/feature-gate-type_privacy_lints.rs6
-rw-r--r--tests/ui/feature-gates/feature-gate-type_privacy_lints.stderr70
-rw-r--r--tests/ui/feature-gates/print-with-path.cfg.stderr2
-rw-r--r--tests/ui/feature-gates/print-with-path.rs7
-rw-r--r--tests/ui/feature-gates/print-with-path.target-cpus.stderr2
-rw-r--r--tests/ui/feature-gates/print-with-path.target-features.stderr2
-rw-r--r--tests/ui/fmt/raw-idents.rs17
-rw-r--r--tests/ui/fmt/raw-idents.stderr44
-rw-r--r--tests/ui/fn/fn-pointer-mismatch.stderr1
-rw-r--r--tests/ui/fn/keyword-order.stderr2
-rw-r--r--tests/ui/fn/signature-error-reporting-under-verbose.rs1
-rw-r--r--tests/ui/fn/signature-error-reporting-under-verbose.stderr1
-rw-r--r--tests/ui/generic-associated-types/issue-101020.stderr5
-rw-r--r--tests/ui/generics/issue-94432-garbage-ice.rs2
-rw-r--r--tests/ui/generics/issue-98432.rs2
-rw-r--r--tests/ui/generics/issue-98432.stderr8
-rw-r--r--tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-89118.stderr15
-rw-r--r--tests/ui/impl-trait/async_scope_creep.rs15
-rw-r--r--tests/ui/impl-trait/async_scope_creep.tait.stderr9
-rw-r--r--tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs3
-rw-r--r--tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.rs3
-rw-r--r--tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.stderr18
-rw-r--r--tests/ui/impl-trait/in-trait/deep-match-works.rs7
-rw-r--r--tests/ui/impl-trait/in-trait/foreign.rs14
-rw-r--r--tests/ui/impl-trait/in-trait/issue-102140.stderr6
-rw-r--r--tests/ui/impl-trait/in-trait/issue-102571.rs8
-rw-r--r--tests/ui/impl-trait/in-trait/issue-102571.stderr2
-rw-r--r--tests/ui/impl-trait/in-trait/lifetime-in-associated-trait-bound.rs19
-rw-r--r--tests/ui/impl-trait/in-trait/nested-rpitit.rs10
-rw-r--r--tests/ui/impl-trait/in-trait/object-safety-sized.rs23
-rw-r--r--tests/ui/impl-trait/in-trait/object-safety.rs2
-rw-r--r--tests/ui/impl-trait/in-trait/refine.rs48
-rw-r--r--tests/ui/impl-trait/in-trait/refine.stderr67
-rw-r--r--tests/ui/impl-trait/in-trait/reveal.rs5
-rw-r--r--tests/ui/impl-trait/in-trait/rpitit-shadowed-by-missing-adt.rs3
-rw-r--r--tests/ui/impl-trait/in-trait/signature-mismatch.failure.stderr2
-rw-r--r--tests/ui/impl-trait/in-trait/signature-mismatch.rs12
-rw-r--r--tests/ui/impl-trait/in-trait/specialization-substs-remap.rs5
-rw-r--r--tests/ui/impl-trait/in-trait/success.rs9
-rw-r--r--tests/ui/impl-trait/issue-108591.rs3
-rw-r--r--tests/ui/impl-trait/issue-108592.rs3
-rw-r--r--tests/ui/impl-trait/issue-86465.rs6
-rw-r--r--tests/ui/impl-trait/issue-86465.stderr2
-rw-r--r--tests/ui/impl-trait/lifetime-ambiguity-regression.rs13
-rw-r--r--tests/ui/implied-bounds/implied-bounds-unconstrained-1.rs28
-rw-r--r--tests/ui/implied-bounds/implied-bounds-unconstrained-2.rs20
-rw-r--r--tests/ui/imports/ambiguous-4.rs2
-rw-r--r--tests/ui/imports/import-after-macro-expand-10.rs17
-rw-r--r--tests/ui/imports/import-after-macro-expand-11.rs21
-rw-r--r--tests/ui/imports/import-after-macro-expand-12.rs34
-rw-r--r--tests/ui/imports/import-after-macro-expand-13.rs22
-rw-r--r--tests/ui/imports/import-after-macro-expand-14.rs22
-rw-r--r--tests/ui/imports/import-after-macro-expand-2.rs4
-rw-r--r--tests/ui/imports/import-after-macro-expand-4.rs11
-rw-r--r--tests/ui/imports/import-after-macro-expand-4.stderr53
-rw-r--r--tests/ui/imports/import-after-macro-expand-6.rs4
-rw-r--r--tests/ui/imports/import-after-macro-expand-9.rs17
-rw-r--r--tests/ui/infinite/infinite-type-alias-mutual-recursion.feature.stderr27
-rw-r--r--tests/ui/infinite/infinite-type-alias-mutual-recursion.gated.stderr (renamed from tests/ui/infinite/infinite-type-alias-mutual-recursion.stderr)15
-rw-r--r--tests/ui/infinite/infinite-type-alias-mutual-recursion.rs10
-rw-r--r--tests/ui/infinite/infinite-vec-type-recursion.feature.stderr11
-rw-r--r--tests/ui/infinite/infinite-vec-type-recursion.gated.stderr (renamed from tests/ui/infinite/infinite-vec-type-recursion.stderr)11
-rw-r--r--tests/ui/infinite/infinite-vec-type-recursion.rs9
-rw-r--r--tests/ui/inner-static-type-parameter.rs2
-rw-r--r--tests/ui/inner-static-type-parameter.stderr6
-rw-r--r--tests/ui/issues/issue-10764.stderr1
-rw-r--r--tests/ui/issues/issue-18389.rs10
-rw-r--r--tests/ui/issues/issue-18389.stderr28
-rw-r--r--tests/ui/issues/issue-18611.stderr6
-rw-r--r--tests/ui/issues/issue-25076.stderr5
-rw-r--r--tests/ui/issues/issue-3214.rs2
-rw-r--r--tests/ui/issues/issue-3214.stderr8
-rw-r--r--tests/ui/issues/issue-35570.stderr6
-rw-r--r--tests/ui/issues/issue-5997-enum.rs2
-rw-r--r--tests/ui/issues/issue-5997-enum.stderr8
-rw-r--r--tests/ui/issues/issue-5997-struct.rs2
-rw-r--r--tests/ui/issues/issue-5997-struct.stderr8
-rw-r--r--tests/ui/issues/issue-60218.stderr5
-rw-r--r--tests/ui/issues/issue-66353.stderr12
-rw-r--r--tests/ui/layout/debug.rs14
-rw-r--r--tests/ui/layout/debug.stderr46
-rw-r--r--tests/ui/layout/homogeneous-aggr-transparent.rs44
-rw-r--r--tests/ui/layout/homogeneous-aggr-transparent.stderr32
-rw-r--r--tests/ui/layout/layout-cycle.rs31
-rw-r--r--tests/ui/layout/layout-cycle.stderr11
-rw-r--r--tests/ui/layout/zero-sized-array-enum-niche.stderr6
-rw-r--r--tests/ui/lifetimes/anonymize-unnamed-bound-vars-in-binders.rs27
-rw-r--r--tests/ui/lifetimes/issue-95023.stderr2
-rw-r--r--tests/ui/lifetimes/lifetime-elision-return-type-trait.stderr6
-rw-r--r--tests/ui/limits/issue-55878.stderr4
-rw-r--r--tests/ui/limits/issue-56762.rs6
-rw-r--r--tests/ui/limits/issue-56762.stderr10
-rw-r--r--tests/ui/linkage-attr/common-linkage-non-zero-init.rs14
-rw-r--r--tests/ui/linkage-attr/common-linkage-non-zero-init.stderr3
-rw-r--r--tests/ui/lint-group-forbid-always-trumps-cli.stderr1
-rw-r--r--tests/ui/lint/cli-unknown-force-warn.rs6
-rw-r--r--tests/ui/lint/cli-unknown-force-warn.stderr11
-rw-r--r--tests/ui/lint/command-line-lint-group-deny.stderr1
-rw-r--r--tests/ui/lint/command-line-lint-group-forbid.stderr1
-rw-r--r--tests/ui/lint/command-line-lint-group-warn.stderr1
-rw-r--r--tests/ui/lint/expr-field.rs15
-rw-r--r--tests/ui/lint/force-warn/cap-lints-warn-allowed-warn-by-default-lint.stderr1
-rw-r--r--tests/ui/lint/force-warn/lint-group-allow-warnings.stderr1
-rw-r--r--tests/ui/lint/force-warn/lint-group-allowed-cli-warn-by-default-lint.stderr1
-rw-r--r--tests/ui/lint/force-warn/lint-group-allowed-lint-group.stderr1
-rw-r--r--tests/ui/lint/force-warn/lint-group-allowed-warn-by-default-lint.stderr1
-rw-r--r--tests/ui/lint/future-incompat-test.stderr1
-rw-r--r--tests/ui/lint/issue-99387.rs2
-rw-r--r--tests/ui/lint/lint-ctypes-94223.rs7
-rw-r--r--tests/ui/lint/lint-ctypes-94223.stderr27
-rw-r--r--tests/ui/lint/lint-ctypes-fn.rs2
-rw-r--r--tests/ui/lint/lint-ctypes-option-nonnull-unsized.rs8
-rw-r--r--tests/ui/lint/lint-ctypes-option-nonnull-unsized.stderr16
-rw-r--r--tests/ui/lint/lint-ctypes.rs2
-rw-r--r--tests/ui/lint/lint-pre-expansion-extern-module.stderr1
-rw-r--r--tests/ui/lint/lint-removed-cmdline-deny.rs13
-rw-r--r--tests/ui/lint/lint-removed-cmdline-deny.stderr28
-rw-r--r--tests/ui/lint/lint-removed-cmdline.rs1
-rw-r--r--tests/ui/lint/lint-removed-cmdline.stderr5
-rw-r--r--tests/ui/lint/lint-renamed-cmdline-deny.rs10
-rw-r--r--tests/ui/lint/lint-renamed-cmdline-deny.stderr31
-rw-r--r--tests/ui/lint/lint-renamed-cmdline.rs1
-rw-r--r--tests/ui/lint/lint-renamed-cmdline.stderr8
-rw-r--r--tests/ui/lint/lint-unexported-no-mangle.stderr1
-rw-r--r--tests/ui/lint/lint-unknown-lint-cmdline-allow.rs4
-rw-r--r--tests/ui/lint/lint-unknown-lint-cmdline-deny.rs9
-rw-r--r--tests/ui/lint/lint-unknown-lint-cmdline-deny.stderr31
-rw-r--r--tests/ui/lint/lint-unknown-lint-cmdline.rs2
-rw-r--r--tests/ui/lint/lint-unknown-lint-cmdline.stderr20
-rw-r--r--tests/ui/lint/no-coverage.rs40
-rw-r--r--tests/ui/lint/no-coverage.stderr72
-rw-r--r--tests/ui/lint/ptr_null_checks.rs14
-rw-r--r--tests/ui/lint/ptr_null_checks.stderr38
-rw-r--r--tests/ui/lint/reference_casting.rs28
-rw-r--r--tests/ui/lint/reference_casting.stderr68
-rw-r--r--tests/ui/lint/unused/unused-doc-comments-edge-cases.rs26
-rw-r--r--tests/ui/lint/unused/unused-doc-comments-edge-cases.stderr30
-rw-r--r--tests/ui/lint/unused/unused-parens-issue-106413.rs32
-rw-r--r--tests/ui/lint/unused/unused-parens-issue-106413.stderr127
-rw-r--r--tests/ui/loops/issue-69225-SCEVAddExpr-wrap-flag.rs (renamed from tests/ui/issues/issue-69225-SCEVAddExpr-wrap-flag.rs)0
-rw-r--r--tests/ui/loops/issue-69225-layout-repeated-checked-add.rs (renamed from tests/ui/issues/issue-69225-layout-repeated-checked-add.rs)0
-rw-r--r--tests/ui/macros/issue-39467.rs (renamed from tests/ui/issues/issue-39467.rs)0
-rw-r--r--tests/ui/macros/must-use-in-macro-55516.stderr1
-rw-r--r--tests/ui/match/match_non_exhaustive.stderr3
-rw-r--r--tests/ui/methods/issue-3707.rs (renamed from tests/ui/issues/issue-3707.rs)0
-rw-r--r--tests/ui/methods/issue-3707.stderr (renamed from tests/ui/issues/issue-3707.stderr)0
-rw-r--r--tests/ui/mir/issue-92893.rs4
-rw-r--r--tests/ui/mir/issue-92893.stderr18
-rw-r--r--tests/ui/mir/mir-inlining/always-encode-mirs.rs12
-rw-r--r--tests/ui/mir/mir-inlining/auxiliary/internal.rs7
-rw-r--r--tests/ui/mismatched_types/cast-rfc0401.stderr4
-rw-r--r--tests/ui/mismatched_types/issue-13033.rs (renamed from tests/ui/issues/issue-13033.rs)0
-rw-r--r--tests/ui/mismatched_types/issue-13033.stderr (renamed from tests/ui/issues/issue-13033.stderr)0
-rw-r--r--tests/ui/mismatched_types/normalize-fn-sig.stderr1
-rw-r--r--tests/ui/moves/issue-34721.fixed (renamed from tests/ui/issues/issue-34721.fixed)0
-rw-r--r--tests/ui/moves/issue-34721.rs (renamed from tests/ui/issues/issue-34721.rs)0
-rw-r--r--tests/ui/moves/issue-34721.stderr (renamed from tests/ui/issues/issue-34721.stderr)0
-rw-r--r--tests/ui/namespace/namespace-mix.stderr220
-rw-r--r--tests/ui/nested-ty-params.rs2
-rw-r--r--tests/ui/nested-ty-params.stderr16
-rw-r--r--tests/ui/never_type/feature-gate-never_type_fallback.stderr5
-rw-r--r--tests/ui/never_type/impl_trait_fallback3.stderr6
-rw-r--r--tests/ui/never_type/impl_trait_fallback4.stderr6
-rw-r--r--tests/ui/nll/missing-universe-cause-issue-114907.rs40
-rw-r--r--tests/ui/nll/missing-universe-cause-issue-114907.stderr79
-rw-r--r--tests/ui/object-safety/assoc_type_bounds_sized_used.rs6
-rw-r--r--tests/ui/object-safety/assoc_type_bounds_sized_used.stderr21
-rw-r--r--tests/ui/object-safety/call-when-assoc-ty-is-sized.rs25
-rw-r--r--tests/ui/on-unimplemented/on-trait.stderr10
-rw-r--r--tests/ui/on-unimplemented/parent-label.stderr20
-rw-r--r--tests/ui/parser/default-unmatched.stderr2
-rw-r--r--tests/ui/parser/impl-parsing.stderr2
-rw-r--r--tests/ui/parser/issue-101477-enum.stderr2
-rw-r--r--tests/ui/parser/issues/issue-113110-non-item-at-module-root.rs1
-rw-r--r--tests/ui/parser/issues/issue-113110-non-item-at-module-root.stderr10
-rw-r--r--tests/ui/parser/issues/issue-115780-pat-lt-bracket-in-macro-call.rs21
-rw-r--r--tests/ui/parser/issues/issue-17904-2.stderr2
-rw-r--r--tests/ui/parser/issues/issue-43196.stderr2
-rw-r--r--tests/ui/parser/issues/issue-62913.stderr2
-rw-r--r--tests/ui/parser/issues/issue-68890.stderr2
-rw-r--r--tests/ui/parser/macro/macro-expand-to-field.rs31
-rw-r--r--tests/ui/parser/macro/macro-expand-to-field.stderr51
-rw-r--r--tests/ui/parser/shebang/shebang-doc-comment.stderr2
-rw-r--r--tests/ui/parser/struct-literal-in-if.rs5
-rw-r--r--tests/ui/parser/struct-literal-in-if.stderr18
-rw-r--r--tests/ui/parser/struct-literal-in-match-guard.rs3
-rw-r--r--tests/ui/parser/struct-literal-in-while.rs5
-rw-r--r--tests/ui/parser/struct-literal-in-while.stderr18
-rw-r--r--tests/ui/parser/virtual-structs.stderr2
-rw-r--r--tests/ui/pattern/issue-114896.rs7
-rw-r--r--tests/ui/pattern/issue-114896.stderr11
-rw-r--r--tests/ui/pattern/usefulness/auxiliary/non-exhaustive.rs2
-rw-r--r--tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.rs12
-rw-r--r--tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.stderr17
-rw-r--r--tests/ui/pattern/usefulness/issue-30240.stderr2
-rw-r--r--tests/ui/pattern/usefulness/nested-non-exhaustive-enums.rs18
-rw-r--r--tests/ui/pattern/usefulness/nested-non-exhaustive-enums.stderr22
-rw-r--r--tests/ui/privacy/associated-item-privacy-inherent.rs2
-rw-r--r--tests/ui/privacy/associated-item-privacy-trait.rs2
-rw-r--r--tests/ui/privacy/associated-item-privacy-type-binding.rs2
-rw-r--r--tests/ui/privacy/effective_visibilities_full_priv.rs2
-rw-r--r--tests/ui/privacy/issue-30079.rs3
-rw-r--r--tests/ui/privacy/issue-30079.stderr17
-rw-r--r--tests/ui/privacy/private-bounds-locally-allowed.rs7
-rw-r--r--tests/ui/privacy/private-in-public-assoc-ty.rs9
-rw-r--r--tests/ui/privacy/private-in-public-assoc-ty.stderr50
-rw-r--r--tests/ui/privacy/private-in-public-lint.rs19
-rw-r--r--tests/ui/privacy/private-in-public-lint.stderr21
-rw-r--r--tests/ui/privacy/private-in-public-non-principal-2.rs2
-rw-r--r--tests/ui/privacy/private-in-public-non-principal.rs10
-rw-r--r--tests/ui/privacy/private-in-public-non-principal.stderr28
-rw-r--r--tests/ui/privacy/private-in-public-type-alias-impl-trait.rs2
-rw-r--r--tests/ui/privacy/private-in-public-warn.rs85
-rw-r--r--tests/ui/privacy/private-in-public-warn.stderr376
-rw-r--r--tests/ui/privacy/private-in-public.rs66
-rw-r--r--tests/ui/privacy/private-in-public.stderr468
-rw-r--r--tests/ui/privacy/private-inferred-type-2.rs1
-rw-r--r--tests/ui/privacy/private-inferred-type-2.stderr6
-rw-r--r--tests/ui/privacy/private-inferred-type.rs2
-rw-r--r--tests/ui/privacy/private-type-in-interface.rs1
-rw-r--r--tests/ui/privacy/private-type-in-interface.stderr18
-rw-r--r--tests/ui/privacy/restricted/private-in-public.rs5
-rw-r--r--tests/ui/privacy/restricted/private-in-public.stderr21
-rw-r--r--tests/ui/privacy/unnameable_types.rs9
-rw-r--r--tests/ui/privacy/unnameable_types.stderr8
-rw-r--r--tests/ui/privacy/where-priv-type.rs27
-rw-r--r--tests/ui/privacy/where-priv-type.stderr107
-rw-r--r--tests/ui/privacy/where-pub-type-impls-priv-trait.rs23
-rw-r--r--tests/ui/privacy/where-pub-type-impls-priv-trait.stderr84
-rw-r--r--tests/ui/proc-macro/allowed-signatures.rs2
-rw-r--r--tests/ui/proc-macro/bad-projection.stderr6
-rw-r--r--tests/ui/pub/issue-33174-restricted-type-in-public-interface.rs30
-rw-r--r--tests/ui/pub/issue-33174-restricted-type-in-public-interface.stderr48
-rw-r--r--tests/ui/pub/pub-restricted-error-fn.stderr2
-rw-r--r--tests/ui/range/range-1.stderr2
-rw-r--r--tests/ui/regions/region-lifetime-bounds-on-fns-where-clause.stderr1
-rw-r--r--tests/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.stderr1
-rw-r--r--tests/ui/regions/regions-fn-subtyping-return-static-fail.stderr1
-rw-r--r--tests/ui/regions/regions-lifetime-bounds-on-fns.stderr1
-rw-r--r--tests/ui/reify-intrinsic.stderr1
-rw-r--r--tests/ui/resolve/bad-type-env-capture.stderr8
-rw-r--r--tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr28
-rw-r--r--tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr34
-rw-r--r--tests/ui/resolve/generic-params-from-outer-item-in-const-item.rs39
-rw-r--r--tests/ui/resolve/issue-12796.rs2
-rw-r--r--tests/ui/resolve/issue-12796.stderr4
-rw-r--r--tests/ui/resolve/issue-3021-c.rs4
-rw-r--r--tests/ui/resolve/issue-3021-c.stderr16
-rw-r--r--tests/ui/resolve/issue-65025-extern-static-parent-generics.rs2
-rw-r--r--tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr6
-rw-r--r--tests/ui/resolve/issue-65035-static-with-parent-generics.rs10
-rw-r--r--tests/ui/resolve/issue-65035-static-with-parent-generics.stderr30
-rw-r--r--tests/ui/resolve/issue-6642.rs (renamed from tests/ui/issues/issue-6642.rs)0
-rw-r--r--tests/ui/resolve/issue-6642.stderr (renamed from tests/ui/issues/issue-6642.stderr)0
-rw-r--r--tests/ui/resolve/resolve-type-param-in-item-in-trait.rs8
-rw-r--r--tests/ui/resolve/resolve-type-param-in-item-in-trait.stderr32
-rw-r--r--tests/ui/resolve/suggest-import-without-clobbering-attrs.fixed16
-rw-r--r--tests/ui/resolve/suggest-import-without-clobbering-attrs.rs15
-rw-r--r--tests/ui/resolve/suggest-import-without-clobbering-attrs.stderr14
-rw-r--r--tests/ui/resolve/use-self-in-inner-fn.rs6
-rw-r--r--tests/ui/resolve/use-self-in-inner-fn.stderr6
-rw-r--r--tests/ui/rfcs/rfc-2008-non-exhaustive/enum.stderr5
-rw-r--r--tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.rs36
-rw-r--r--tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.stderr285
-rw-r--r--tests/ui/rfcs/rfc-2294-if-let-guard/macro-expanded.stderr1
-rw-r--r--tests/ui/rfcs/rfc-2294-if-let-guard/parens.rs2
-rw-r--r--tests/ui/rfcs/rfc-2294-if-let-guard/parens.stderr34
-rw-r--r--tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr1
-rw-r--r--tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr1
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.rs2
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.stderr2
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.rs14
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.stderr10
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.rs5
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.stderr33
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.rs340
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.stderr1021
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.rs261
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.stderr1462
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.rs1
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr30
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.rs6
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.stderr30
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs2
-rw-r--r--tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr36
-rw-r--r--tests/ui/rfcs/rfc-2632-const-trait-impl/effects/fallback.rs16
-rw-r--r--tests/ui/rmeta/auxiliary/rmeta-meta.rs4
-rw-r--r--tests/ui/rmeta/no_optitimized_mir.rs11
-rw-r--r--tests/ui/rmeta/no_optitimized_mir.stderr10
-rw-r--r--tests/ui/sanitize/cfg.rs16
-rw-r--r--tests/ui/span/issue-29595.stderr6
-rw-r--r--tests/ui/span/send-is-not-static-std-sync.rs2
-rw-r--r--tests/ui/span/send-is-not-static-std-sync.stderr8
-rw-r--r--tests/ui/specialization/issue-38091.stderr5
-rw-r--r--tests/ui/static/static-reference-to-fn-1.stderr1
-rw-r--r--tests/ui/suggestions/issue-89333.stderr5
-rw-r--r--tests/ui/test-attrs/issue-36768.rs2
-rw-r--r--tests/ui/thir-print/thir-flat-const-variant.stdout96
-rw-r--r--tests/ui/thir-print/thir-tree-match.stdout20
-rw-r--r--tests/ui/trait-bounds/issue-82038.rs9
-rw-r--r--tests/ui/trait-bounds/issue-82038.stderr15
-rw-r--r--tests/ui/traits/bound/on-structs-and-enums-in-fns.stderr10
-rw-r--r--tests/ui/traits/bound/on-structs-and-enums-in-impls.stderr5
-rw-r--r--tests/ui/traits/bound/on-structs-and-enums-locals.stderr10
-rw-r--r--tests/ui/traits/bound/on-structs-and-enums-static.stderr5
-rw-r--r--tests/ui/traits/bound/on-structs-and-enums.stderr20
-rw-r--r--tests/ui/traits/deny-builtin-object-impl.current.stderr5
-rw-r--r--tests/ui/traits/deny-builtin-object-impl.next.stderr5
-rw-r--r--tests/ui/traits/dont-autoderef-ty-with-escaping-var.stderr5
-rw-r--r--tests/ui/traits/impl-bounds-checking.stderr5
-rw-r--r--tests/ui/traits/issue-105231.rs2
-rw-r--r--tests/ui/traits/issue-105231.stderr8
-rw-r--r--tests/ui/traits/new-solver/canonicalize-effect-var.rs22
-rw-r--r--tests/ui/traits/new-solver/dont-ice-on-assoc-projection.rs19
-rw-r--r--tests/ui/traits/new-solver/dont-ice-on-assoc-projection.stderr21
-rw-r--r--tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.rs12
-rw-r--r--tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.stderr27
-rw-r--r--tests/ui/traits/new-solver/projection-discr-kind.stderr5
-rw-r--r--tests/ui/traits/non_lifetime_binders/fail.stderr5
-rw-r--r--tests/ui/traits/object-does-not-impl-trait.stderr5
-rw-r--r--tests/ui/traits/object/enforce-supertrait-projection.rs2
-rw-r--r--tests/ui/traits/object/enforce-supertrait-projection.stderr2
-rw-r--r--tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.rs2
-rw-r--r--tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.stderr8
-rw-r--r--tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.rs15
-rw-r--r--tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.stderr22
-rw-r--r--tests/ui/traits/suggest-dereferences/issue-39029.fixed (renamed from tests/ui/traits/suggest-deferences/issue-39029.fixed)0
-rw-r--r--tests/ui/traits/suggest-dereferences/issue-39029.rs (renamed from tests/ui/traits/suggest-deferences/issue-39029.rs)0
-rw-r--r--tests/ui/traits/suggest-dereferences/issue-39029.stderr (renamed from tests/ui/traits/suggest-deferences/issue-39029.stderr)0
-rw-r--r--tests/ui/traits/suggest-dereferences/issue-62530.fixed (renamed from tests/ui/traits/suggest-deferences/issue-62530.fixed)0
-rw-r--r--tests/ui/traits/suggest-dereferences/issue-62530.rs (renamed from tests/ui/traits/suggest-deferences/issue-62530.rs)0
-rw-r--r--tests/ui/traits/suggest-dereferences/issue-62530.stderr (renamed from tests/ui/traits/suggest-deferences/issue-62530.stderr)0
-rw-r--r--tests/ui/traits/suggest-dereferences/multiple-0.fixed (renamed from tests/ui/traits/suggest-deferences/multiple-0.fixed)0
-rw-r--r--tests/ui/traits/suggest-dereferences/multiple-0.rs (renamed from tests/ui/traits/suggest-deferences/multiple-0.rs)0
-rw-r--r--tests/ui/traits/suggest-dereferences/multiple-0.stderr (renamed from tests/ui/traits/suggest-deferences/multiple-0.stderr)0
-rw-r--r--tests/ui/traits/suggest-dereferences/multiple-1.rs (renamed from tests/ui/traits/suggest-deferences/multiple-1.rs)0
-rw-r--r--tests/ui/traits/suggest-dereferences/multiple-1.stderr (renamed from tests/ui/traits/suggest-deferences/multiple-1.stderr)0
-rw-r--r--tests/ui/traits/suggest-dereferences/root-obligation.fixed (renamed from tests/ui/traits/suggest-deferences/root-obligation.fixed)0
-rw-r--r--tests/ui/traits/suggest-dereferences/root-obligation.rs (renamed from tests/ui/traits/suggest-deferences/root-obligation.rs)0
-rw-r--r--tests/ui/traits/suggest-dereferences/root-obligation.stderr (renamed from tests/ui/traits/suggest-deferences/root-obligation.stderr)0
-rw-r--r--tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.fixed (renamed from tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.fixed)0
-rw-r--r--tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.rs (renamed from tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.rs)0
-rw-r--r--tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.stderr (renamed from tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.stderr)0
-rw-r--r--tests/ui/traits/vtable-res-trait-param.stderr5
-rw-r--r--tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.rs4
-rw-r--r--tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.stderr19
-rw-r--r--tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.rs4
-rw-r--r--tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.stderr19
-rw-r--r--tests/ui/transmute/issue-115402-overflow-size.rs27
-rw-r--r--tests/ui/transmute/issue-115402-overflow-size.stderr33
-rw-r--r--tests/ui/trivial-bounds/trivial-bounds-leak.stderr11
-rw-r--r--tests/ui/try-trait/issue-32709.rs (renamed from tests/ui/issues/issue-32709.rs)0
-rw-r--r--tests/ui/try-trait/issue-32709.stderr (renamed from tests/ui/issues/issue-32709.stderr)0
-rw-r--r--tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs6
-rw-r--r--tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.stderr4
-rw-r--r--tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.rs6
-rw-r--r--tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.stderr14
-rw-r--r--tests/ui/type-alias-impl-trait/generic_duplicate_param_use.rs6
-rw-r--r--tests/ui/type-alias-impl-trait/generic_duplicate_param_use.stderr26
-rw-r--r--tests/ui/type-alias-impl-trait/generic_lifetime_param.rs5
-rw-r--r--tests/ui/type-alias-impl-trait/implied_lifetime_wf_check3.rs4
-rw-r--r--tests/ui/type-alias-impl-trait/imply_bounds_from_bounds.rs20
-rw-r--r--tests/ui/type-alias-impl-trait/issue-89686.rs2
-rw-r--r--tests/ui/type-alias-impl-trait/issue-89686.stderr2
-rw-r--r--tests/ui/type-alias-impl-trait/missing_lifetime_bound.rs5
-rw-r--r--tests/ui/type-alias-impl-trait/missing_lifetime_bound.stderr9
-rw-r--r--tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs6
-rw-r--r--tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr2
-rw-r--r--tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-pass.rs6
-rw-r--r--tests/ui/type-alias-impl-trait/nested-tait-hrtb.rs2
-rw-r--r--tests/ui/type-alias-impl-trait/nested-tait-hrtb.stderr14
-rw-r--r--tests/ui/type-alias-impl-trait/privacy.rs4
-rw-r--r--tests/ui/type-alias-impl-trait/privacy.stderr18
-rw-r--r--tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs25
-rw-r--r--tests/ui/type-alias-impl-trait/self_implication.rs4
-rw-r--r--tests/ui/type-alias-impl-trait/variance.rs50
-rw-r--r--tests/ui/type-alias-impl-trait/variance.stderr86
-rw-r--r--tests/ui/type/type-arg-out-of-scope.rs2
-rw-r--r--tests/ui/type/type-arg-out-of-scope.stderr16
-rw-r--r--tests/ui/typeck/issue-114918/const-in-fn-return-type.rs10
-rw-r--r--tests/ui/typeck/issue-114918/const-in-fn-return-type.stderr9
-rw-r--r--tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.rs20
-rw-r--r--tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.stderr9
-rw-r--r--tests/ui/typeck/issue-114918/const-in-struct-type-arg.rs12
-rw-r--r--tests/ui/typeck/issue-114918/const-in-struct-type-arg.stderr9
-rw-r--r--tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.rs13
-rw-r--r--tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.stderr9
-rw-r--r--tests/ui/union/projection-as-union-type-error-2.stderr5
-rw-r--r--tests/ui/union/projection-as-union-type-error.stderr6
-rw-r--r--tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.rs17
-rw-r--r--tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.stderr16
-rw-r--r--tests/ui/unsafe/initializing-ranged-via-ctor.rs11
-rw-r--r--tests/ui/unsafe/initializing-ranged-via-ctor.stderr16
-rw-r--r--tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.rs16
-rw-r--r--tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.stderr21
-rw-r--r--tests/ui/unsafe/ranged-ctor-as-fn-ptr.rs10
-rw-r--r--tests/ui/unsafe/ranged-ctor-as-fn-ptr.stderr15
-rw-r--r--tests/ui/unsized/issue-115203.rs11
-rw-r--r--tests/ui/unsized/issue-115203.stderr19
-rw-r--r--tests/ui/unsized/issue-115809.rs13
-rw-r--r--tests/ui/unsized/issue-115809.stderr19
-rw-r--r--tests/ui/unsized/issue-75707.stderr5
-rw-r--r--tests/ui/wf/hir-wf-canonicalized.stderr12
-rw-r--r--tests/ui/wf/issue-95665.stderr5
-rw-r--r--tests/ui/wf/wf-complex-assoc-type.stderr5
-rw-r--r--tests/ui/wf/wf-foreign-fn-decl-ret.stderr11
-rw-r--r--tests/ui/wf/wf-packed-on-proj-of-type-as-unimpl-trait.stderr6
-rw-r--r--tests/ui/where-clauses/higher-ranked-fn-type.quiet.stderr5
-rw-r--r--tests/ui/where-clauses/higher-ranked-fn-type.verbose.stderr5
-rw-r--r--tests/ui/where-clauses/where-clause-method-substituion.stderr5
868 files changed, 19572 insertions, 4515 deletions
diff --git a/tests/codegen/debuginfo-inline-callsite-location.rs b/tests/codegen/debuginfo-inline-callsite-location.rs
new file mode 100644
index 00000000000..b1475ee7931
--- /dev/null
+++ b/tests/codegen/debuginfo-inline-callsite-location.rs
@@ -0,0 +1,28 @@
+// compile-flags: -g -O
+
+// Check that each inline call site for the same function uses the same "sub-program" so that LLVM
+// can correctly merge the debug info if it merges the inlined code (e.g., for merging of tail
+// calls to panic.
+
+// CHECK:       tail call void @_ZN4core9panicking5panic17h{{([0-9a-z]{16})}}E
+// CHECK-SAME:  !dbg ![[#first_dbg:]]
+// CHECK:       tail call void @_ZN4core9panicking5panic17h{{([0-9a-z]{16})}}E
+// CHECK-SAME:  !dbg ![[#second_dbg:]]
+
+// CHECK-DAG:   ![[#func_dbg:]] = distinct !DISubprogram(name: "unwrap<i32>"
+// CHECK-DAG:   ![[#first_scope:]] = distinct !DILexicalBlock(scope: ![[#func_dbg]],
+// CHECK:       ![[#second_scope:]] = distinct !DILexicalBlock(scope: ![[#func_dbg]],
+// CHECK:       ![[#first_dbg]] = !DILocation(line: [[#]]
+// CHECK-SAME:  scope: ![[#first_scope]], inlinedAt: ![[#]])
+// CHECK:       ![[#second_dbg]] = !DILocation(line: [[#]]
+// CHECK-SAME:  scope: ![[#second_scope]], inlinedAt: ![[#]])
+
+#![crate_type = "lib"]
+
+#[no_mangle]
+extern "C" fn add_numbers(x: &Option<i32>, y: &Option<i32>) -> i32 {
+    let x1 = x.unwrap();
+    let y1 = y.unwrap();
+
+    x1 + y1
+}
diff --git a/tests/codegen/issues/issue-115385-llvm-jump-threading.rs b/tests/codegen/issues/issue-115385-llvm-jump-threading.rs
new file mode 100644
index 00000000000..142e3596d96
--- /dev/null
+++ b/tests/codegen/issues/issue-115385-llvm-jump-threading.rs
@@ -0,0 +1,46 @@
+// compile-flags: -O -Ccodegen-units=1
+
+#![crate_type = "lib"]
+
+#[repr(i64)]
+pub enum Boolean {
+    False = 0,
+    True = 1,
+}
+
+impl Clone for Boolean {
+    fn clone(&self) -> Self {
+        *self
+    }
+}
+
+impl Copy for Boolean {}
+
+extern "C" {
+    fn set_value(foo: *mut i64);
+    fn bar();
+}
+
+pub fn foo(x: bool) {
+    let mut foo = core::mem::MaybeUninit::<i64>::uninit();
+    unsafe {
+        set_value(foo.as_mut_ptr());
+    }
+
+    if x {
+        let l1 = unsafe { *foo.as_mut_ptr().cast::<Boolean>() };
+        if matches!(l1, Boolean::False) {
+            unsafe {
+                *foo.as_mut_ptr() = 0;
+            }
+        }
+    }
+
+    let l2 = unsafe { *foo.as_mut_ptr() };
+    if l2 == 2 {
+        // CHECK: call void @bar
+        unsafe {
+            bar();
+        }
+    }
+}
diff --git a/tests/codegen/lib-optimizations/iter-sum.rs b/tests/codegen/lib-optimizations/iter-sum.rs
new file mode 100644
index 00000000000..ff7ca6ef6c1
--- /dev/null
+++ b/tests/codegen/lib-optimizations/iter-sum.rs
@@ -0,0 +1,15 @@
+// ignore-debug: the debug assertions get in the way
+// compile-flags: -O
+// only-x86_64 (vectorization varies between architectures)
+#![crate_type = "lib"]
+
+
+// Ensure that slice + take + sum gets vectorized.
+// Currently this relies on the slice::Iter::try_fold implementation
+// CHECK-LABEL: @slice_take_sum
+#[no_mangle]
+pub fn slice_take_sum(s: &[u64], l: usize) -> u64 {
+    // CHECK: vector.body:
+    // CHECK: ret
+    s.iter().take(l).sum()
+}
diff --git a/tests/codegen/repr/transparent.rs b/tests/codegen/repr/transparent.rs
index b140fc719da..c5974248bb3 100644
--- a/tests/codegen/repr/transparent.rs
+++ b/tests/codegen/repr/transparent.rs
@@ -43,7 +43,6 @@ pub extern "C" fn test_WithZst(_: WithZst) -> WithZst { loop {} }
 #[repr(transparent)]
 pub struct WithZeroSizedArray(*const f32, [i8; 0]);
 
-// Apparently we use i32* when newtype-unwrapping f32 pointers. Whatever.
 // CHECK: define{{.*}}ptr @test_WithZeroSizedArray(ptr noundef %_1)
 #[no_mangle]
 pub extern "C" fn test_WithZeroSizedArray(_: WithZeroSizedArray) -> WithZeroSizedArray { loop {} }
diff --git a/tests/codegen/sanitizer/address-sanitizer-globals-tracking.rs b/tests/codegen/sanitizer/address-sanitizer-globals-tracking.rs
new file mode 100644
index 00000000000..a70ef7751b6
--- /dev/null
+++ b/tests/codegen/sanitizer/address-sanitizer-globals-tracking.rs
@@ -0,0 +1,43 @@
+// Verifies that AddressSanitizer symbols show up as expected in LLVM IR with `-Zsanitizer`.
+// This is a regression test for https://github.com/rust-lang/rust/issues/113404
+//
+// Notes about the `compile-flags` below:
+//
+// * The original issue only reproed with LTO - this is why this angle has
+//   extra test coverage via different `revisions`
+// * To observe the failure/repro at LLVM-IR level we need to use `staticlib`
+//   which necessitates `-C prefer-dynamic=false` - without the latter flag,
+//   we would have run into "cannot prefer dynamic linking when performing LTO".
+//
+// The test is restricted to `only-linux`, because the sanitizer-related instrumentation is target
+// specific.  In particular, `___asan_globals_registered` is only used in the
+// `InstrumentGlobalsELF` and `InstrumentGlobalsMachO` code paths.  The `only-linux` filter is
+// narrower than really needed (i.e. narrower than ELF-or-MachO), but this seems ok - having a
+// linux-only regression test should be sufficient here.
+//
+// needs-sanitizer-address
+// only-linux
+//
+// revisions:ASAN ASAN-FAT-LTO
+//[ASAN]          compile-flags: -Zsanitizer=address
+//[ASAN-FAT-LTO]  compile-flags: -Zsanitizer=address -Cprefer-dynamic=false -Clto=fat
+
+#![crate_type="staticlib"]
+
+// The test below mimics `CACHED_POW10` from `library/core/src/num/flt2dec/strategy/grisu.rs` which
+// (because of incorrect handling of `___asan_globals_registered` during LTO) was incorrectly
+// reported as an ODR violation in https://crbug.com/1459233#c1.  Before this bug was fixed,
+// `___asan_globals_registered` would show up as `internal global i64` rather than `common hidden
+// global i64`.  (The test expectations ignore the exact type because on `arm-android` the type
+// is `i32` rather than `i64`.)
+//
+// CHECK: @___asan_globals_registered = common hidden global
+// CHECK: @__start_asan_globals = extern_weak hidden global
+// CHECK: @__stop_asan_globals = extern_weak hidden global
+#[no_mangle]
+pub static CACHED_POW10: [(u64, i16, i16); 4] = [
+    (0xe61acf033d1a45df, -1087, -308),
+    (0xab70fe17c79ac6ca, -1060, -300),
+    (0xff77b1fcbebcdc4f, -1034, -292),
+    (0xbe5691ef416bd60c, -1007, -284),
+];
diff --git a/tests/codegen/slice-as_chunks.rs b/tests/codegen/slice-as_chunks.rs
index 48e3f73fc86..efac9f3d68d 100644
--- a/tests/codegen/slice-as_chunks.rs
+++ b/tests/codegen/slice-as_chunks.rs
@@ -22,9 +22,9 @@ pub fn chunks4(x: &[u8]) -> &[[u8; 4]] {
 // CHECK-LABEL: @chunks4_with_remainder
 #[no_mangle]
 pub fn chunks4_with_remainder(x: &[u8]) -> (&[[u8; 4]], &[u8]) {
-    // CHECK: and i64 %x.1, -4
-    // CHECK: and i64 %x.1, 3
-    // CHECK: lshr exact
+    // CHECK-DAG: and i64 %x.1, -4
+    // CHECK-DAG: and i64 %x.1, 3
+    // CHECK-DAG: lshr
     // CHECK-NOT: mul
     // CHECK-NOT: udiv
     // CHECK-NOT: urem
diff --git a/tests/codegen/slice-iter-nonnull.rs b/tests/codegen/slice-iter-nonnull.rs
index f7d164bc856..8749226d401 100644
--- a/tests/codegen/slice-iter-nonnull.rs
+++ b/tests/codegen/slice-iter-nonnull.rs
@@ -100,13 +100,13 @@ pub fn slice_iter_is_empty(it: &std::slice::Iter<'_, u32>) -> bool {
 // CHECK-LABEL: @slice_iter_len
 #[no_mangle]
 pub fn slice_iter_len(it: &std::slice::Iter<'_, u32>) -> usize {
-    // CHECK: %[[START:.+]] = load ptr, ptr %it,
-    // CHECK-SAME: !nonnull
-    // CHECK-SAME: !noundef
     // CHECK: %[[ENDP:.+]] = getelementptr{{.+}}ptr %it,{{.+}} 1
     // CHECK: %[[END:.+]] = load ptr, ptr %[[ENDP]]
     // CHECK-SAME: !nonnull
     // CHECK-SAME: !noundef
+    // CHECK: %[[START:.+]] = load ptr, ptr %it,
+    // CHECK-SAME: !nonnull
+    // CHECK-SAME: !noundef
 
     // CHECK: ptrtoint
     // CHECK: ptrtoint
diff --git a/tests/coverage-map/README.md b/tests/coverage-map/README.md
new file mode 100644
index 00000000000..60d1352cd64
--- /dev/null
+++ b/tests/coverage-map/README.md
@@ -0,0 +1,13 @@
+The tests in `./status-quo` were copied from `tests/run-coverage` in order to
+capture the current behavior of the instrumentor on non-trivial programs.
+The actual mappings have not been closely inspected.
+
+## Maintenance note
+
+These tests can be sensitive to small changes in MIR spans or MIR control flow,
+especially in HIR-to-MIR lowering or MIR optimizations.
+
+If you haven't touched the coverage code directly, and the `run-coverage` test
+suite still works, then it should usually be OK to just `--bless` these
+coverage mapping tests as necessary, without worrying too much about the exact
+changes.
diff --git a/tests/coverage-map/if.cov-map b/tests/coverage-map/if.cov-map
new file mode 100644
index 00000000000..3cedb5ffbec
--- /dev/null
+++ b/tests/coverage-map/if.cov-map
@@ -0,0 +1,15 @@
+Function name: if::main
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 03, 01, 02, 0c, 05, 02, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 05, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 3, 1) to (start + 2, 12)
+- Code(Counter(1)) at (prev + 2, 13) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 1, 2)
+    = (c1 + (c0 - c1))
+
diff --git a/tests/coverage-map/if.rs b/tests/coverage-map/if.rs
new file mode 100644
index 00000000000..ed3f69bdc98
--- /dev/null
+++ b/tests/coverage-map/if.rs
@@ -0,0 +1,9 @@
+// compile-flags: --edition=2021
+
+fn main() {
+    let cond = std::env::args().len() == 1;
+    if cond {
+        println!("true");
+    }
+    println!("done");
+}
diff --git a/tests/coverage-map/long_and_wide.cov-map b/tests/coverage-map/long_and_wide.cov-map
new file mode 100644
index 00000000000..97aebf9b18a
--- /dev/null
+++ b/tests/coverage-map/long_and_wide.cov-map
@@ -0,0 +1,32 @@
+Function name: long_and_wide::far_function
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 96, 01, 01, 00, 15]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 150, 1) to (start + 0, 21)
+
+Function name: long_and_wide::long_function
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 10, 01, 84, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 16, 1) to (start + 132, 2)
+
+Function name: long_and_wide::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 07, 01, 04, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 7, 1) to (start + 4, 2)
+
+Function name: long_and_wide::wide_function
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 0e, 01, 00, 8b, 01]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 14, 1) to (start + 0, 139)
+
diff --git a/tests/coverage-map/long_and_wide.rs b/tests/coverage-map/long_and_wide.rs
new file mode 100644
index 00000000000..a7cbcd48027
--- /dev/null
+++ b/tests/coverage-map/long_and_wide.rs
@@ -0,0 +1,150 @@
+// compile-flags: --edition=2021
+// ignore-tidy-linelength
+
+// This file deliberately contains line and column numbers larger than 127,
+// to verify that `coverage-dump`'s ULEB128 parser can handle them.
+
+fn main() {
+    wide_function();
+    long_function();
+    far_function();
+}
+
+#[rustfmt::skip]
+fn wide_function() { /*                                                                                                           */ (); }
+
+fn long_function() {
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+    //
+}
+
+fn far_function() {}
diff --git a/tests/coverage-map/status-quo/abort.cov-map b/tests/coverage-map/status-quo/abort.cov-map
new file mode 100644
index 00000000000..45d3795eff8
--- /dev/null
+++ b/tests/coverage-map/status-quo/abort.cov-map
@@ -0,0 +1,57 @@
+Function name: abort::main
+Raw bytes (105): 0x[01, 01, 12, 01, 47, 05, 09, 03, 0d, 42, 11, 03, 0d, 11, 3e, 42, 11, 03, 0d, 3b, 15, 11, 3e, 42, 11, 03, 0d, 15, 36, 3b, 15, 11, 3e, 42, 11, 03, 0d, 05, 09, 0d, 01, 0d, 01, 01, 1b, 03, 02, 0b, 00, 18, 42, 01, 0c, 00, 19, 11, 00, 1a, 02, 0a, 3e, 02, 0a, 00, 0b, 3b, 02, 0c, 00, 19, 15, 00, 1a, 00, 31, 36, 00, 31, 00, 32, 33, 04, 0c, 00, 19, 05, 00, 1a, 00, 31, 09, 00, 31, 00, 32, 47, 01, 09, 00, 17, 0d, 02, 05, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 18
+- expression 0 operands: lhs = Counter(0), rhs = Expression(17, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(16, Sub), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 5 operands: lhs = Counter(4), rhs = Expression(15, Sub)
+- expression 6 operands: lhs = Expression(16, Sub), rhs = Counter(4)
+- expression 7 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 8 operands: lhs = Expression(14, Add), rhs = Counter(5)
+- expression 9 operands: lhs = Counter(4), rhs = Expression(15, Sub)
+- expression 10 operands: lhs = Expression(16, Sub), rhs = Counter(4)
+- expression 11 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 12 operands: lhs = Counter(5), rhs = Expression(13, Sub)
+- expression 13 operands: lhs = Expression(14, Add), rhs = Counter(5)
+- expression 14 operands: lhs = Counter(4), rhs = Expression(15, Sub)
+- expression 15 operands: lhs = Expression(16, Sub), rhs = Counter(4)
+- expression 16 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 17 operands: lhs = Counter(1), rhs = Counter(2)
+Number of file 0 mappings: 13
+- Code(Counter(0)) at (prev + 13, 1) to (start + 1, 27)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 24)
+    = (c0 + (c1 + c2))
+- Code(Expression(16, Sub)) at (prev + 1, 12) to (start + 0, 25)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Counter(4)) at (prev + 0, 26) to (start + 2, 10)
+- Code(Expression(15, Sub)) at (prev + 2, 10) to (start + 0, 11)
+    = (((c0 + (c1 + c2)) - c3) - c4)
+- Code(Expression(14, Add)) at (prev + 2, 12) to (start + 0, 25)
+    = (c4 + (((c0 + (c1 + c2)) - c3) - c4))
+- Code(Counter(5)) at (prev + 0, 26) to (start + 0, 49)
+- Code(Expression(13, Sub)) at (prev + 0, 49) to (start + 0, 50)
+    = ((c4 + (((c0 + (c1 + c2)) - c3) - c4)) - c5)
+- Code(Expression(12, Add)) at (prev + 4, 12) to (start + 0, 25)
+    = (c5 + ((c4 + (((c0 + (c1 + c2)) - c3) - c4)) - c5))
+- Code(Counter(1)) at (prev + 0, 26) to (start + 0, 49)
+- Code(Counter(2)) at (prev + 0, 49) to (start + 0, 50)
+- Code(Expression(17, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (c1 + c2)
+- Code(Counter(3)) at (prev + 2, 5) to (start + 1, 2)
+
+Function name: abort::might_abort
+Raw bytes (21): 0x[01, 01, 01, 01, 05, 03, 01, 04, 01, 01, 14, 05, 02, 09, 01, 24, 02, 02, 0c, 03, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 3
+- Code(Counter(0)) at (prev + 4, 1) to (start + 1, 20)
+- Code(Counter(1)) at (prev + 2, 9) to (start + 1, 36)
+- Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 3, 2)
+    = (c0 - c1)
+
diff --git a/tests/coverage-map/status-quo/abort.rs b/tests/coverage-map/status-quo/abort.rs
new file mode 100644
index 00000000000..98264bdc1af
--- /dev/null
+++ b/tests/coverage-map/status-quo/abort.rs
@@ -0,0 +1,66 @@
+#![feature(c_unwind)]
+#![allow(unused_assignments)]
+
+extern "C" fn might_abort(should_abort: bool) {
+    if should_abort {
+        println!("aborting...");
+        panic!("panics and aborts");
+    } else {
+        println!("Don't Panic");
+    }
+}
+
+fn main() -> Result<(), u8> {
+    let mut countdown = 10;
+    while countdown > 0 {
+        if countdown < 5 {
+            might_abort(false);
+        }
+        // See discussion (below the `Notes` section) on coverage results for the closing brace.
+        if countdown < 5 { might_abort(false); } // Counts for different regions on one line.
+        // For the following example, the closing brace is the last character on the line.
+        // This shows the character after the closing brace is highlighted, even if that next
+        // character is a newline.
+        if countdown < 5 { might_abort(false); }
+        countdown -= 1;
+    }
+    Ok(())
+}
+
+// Notes:
+//   1. Compare this program and its coverage results to those of the similar tests
+//      `panic_unwind.rs` and `try_error_result.rs`.
+//   2. This test confirms the coverage generated when a program includes `UnwindAction::Terminate`.
+//   3. The test does not invoke the abort. By executing to a successful completion, the coverage
+//      results show where the program did and did not execute.
+//   4. If the program actually aborted, the coverage counters would not be saved (which "works as
+//      intended"). Coverage results would show no executed coverage regions.
+//   6. If `should_abort` is `true` and the program aborts, the program exits with a `132` status
+//      (on Linux at least).
+
+/*
+
+Expect the following coverage results:
+
+```text
+    16|     11|    while countdown > 0 {
+    17|     10|        if countdown < 5 {
+    18|      4|            might_abort(false);
+    19|      6|        }
+```
+
+This is actually correct.
+
+The condition `countdown < 5` executed 10 times (10 loop iterations).
+
+It evaluated to `true` 4 times, and executed the `might_abort()` call.
+
+It skipped the body of the `might_abort()` call 6 times. If an `if` does not include an explicit
+`else`, the coverage implementation injects a counter, at the character immediately after the `if`s
+closing brace, to count the "implicit" `else`. This is the only way to capture the coverage of the
+non-true condition.
+
+As another example of why this is important, say the condition was `countdown < 50`, which is always
+`true`. In that case, we wouldn't have a test for what happens if `might_abort()` is not called.
+The closing brace would have a count of `0`, highlighting the missed coverage.
+*/
diff --git a/tests/coverage-map/status-quo/assert.cov-map b/tests/coverage-map/status-quo/assert.cov-map
new file mode 100644
index 00000000000..dd413123de7
--- /dev/null
+++ b/tests/coverage-map/status-quo/assert.cov-map
@@ -0,0 +1,40 @@
+Function name: assert::main
+Raw bytes (65): 0x[01, 01, 08, 01, 1b, 05, 1f, 09, 0d, 03, 11, 16, 05, 03, 11, 05, 1f, 09, 0d, 09, 01, 09, 01, 01, 1b, 03, 02, 0b, 00, 18, 16, 01, 0c, 00, 1a, 05, 00, 1b, 02, 0a, 12, 02, 13, 00, 20, 09, 00, 21, 02, 0a, 0d, 02, 0a, 00, 0b, 1b, 01, 09, 00, 17, 11, 02, 05, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 8
+- expression 0 operands: lhs = Counter(0), rhs = Expression(6, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(7, Add)
+- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(5, Sub), rhs = Counter(1)
+- expression 5 operands: lhs = Expression(0, Add), rhs = Counter(4)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(7, Add)
+- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 9, 1) to (start + 1, 27)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 24)
+    = (c0 + (c1 + (c2 + c3)))
+- Code(Expression(5, Sub)) at (prev + 1, 12) to (start + 0, 26)
+    = ((c0 + (c1 + (c2 + c3))) - c4)
+- Code(Counter(1)) at (prev + 0, 27) to (start + 2, 10)
+- Code(Expression(4, Sub)) at (prev + 2, 19) to (start + 0, 32)
+    = (((c0 + (c1 + (c2 + c3))) - c4) - c1)
+- Code(Counter(2)) at (prev + 0, 33) to (start + 2, 10)
+- Code(Counter(3)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(6, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (c1 + (c2 + c3))
+- Code(Counter(4)) at (prev + 2, 5) to (start + 1, 2)
+
+Function name: assert::might_fail_assert
+Raw bytes (21): 0x[01, 01, 01, 01, 05, 03, 01, 04, 01, 02, 0f, 02, 02, 25, 00, 3d, 05, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 3
+- Code(Counter(0)) at (prev + 4, 1) to (start + 2, 15)
+- Code(Expression(0, Sub)) at (prev + 2, 37) to (start + 0, 61)
+    = (c0 - c1)
+- Code(Counter(1)) at (prev + 1, 1) to (start + 0, 2)
+
diff --git a/tests/coverage-map/status-quo/assert.rs b/tests/coverage-map/status-quo/assert.rs
new file mode 100644
index 00000000000..85e6662a6ad
--- /dev/null
+++ b/tests/coverage-map/status-quo/assert.rs
@@ -0,0 +1,32 @@
+#![allow(unused_assignments)]
+// failure-status: 101
+
+fn might_fail_assert(one_plus_one: u32) {
+    println!("does 1 + 1 = {}?", one_plus_one);
+    assert_eq!(1 + 1, one_plus_one, "the argument was wrong");
+}
+
+fn main() -> Result<(), u8> {
+    let mut countdown = 10;
+    while countdown > 0 {
+        if countdown == 1 {
+            might_fail_assert(3);
+        } else if countdown < 5 {
+            might_fail_assert(2);
+        }
+        countdown -= 1;
+    }
+    Ok(())
+}
+
+// Notes:
+//   1. Compare this program and its coverage results to those of the very similar test
+//      `panic_unwind.rs`, and similar tests `abort.rs` and `try_error_result.rs`.
+//   2. This test confirms the coverage generated when a program passes or fails an `assert!()` or
+//      related `assert_*!()` macro.
+//   3. Notably, the `assert` macros *do not* generate `TerminatorKind::Assert`. The macros produce
+//      conditional expressions, `TerminatorKind::SwitchInt` branches, and a possible call to
+//      `begin_panic_fmt()` (that begins a panic unwind, if the assertion test fails).
+//   4. `TerminatoKind::Assert` is, however, also present in the MIR generated for this test
+//      (and in many other coverage tests). The `Assert` terminator is typically generated by the
+//      Rust compiler to check for runtime failures, such as numeric overflows.
diff --git a/tests/coverage-map/status-quo/async.cov-map b/tests/coverage-map/status-quo/async.cov-map
new file mode 100644
index 00000000000..5f28252ef80
--- /dev/null
+++ b/tests/coverage-map/status-quo/async.cov-map
@@ -0,0 +1,340 @@
+Function name: async::c
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 05, 01, 00, 19]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 5, 1) to (start + 0, 25)
+
+Function name: async::c::{closure#0}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 05, 19, 01, 0e, 05, 02, 09, 00, 0a, 02, 02, 09, 00, 0a, 07, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 5, 25) to (start + 1, 14)
+- Code(Counter(1)) at (prev + 2, 9) to (start + 0, 10)
+- Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 10)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: async::d
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0d, 01, 00, 14]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 13, 1) to (start + 0, 20)
+
+Function name: async::d::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0d, 14, 00, 19]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 13, 20) to (start + 0, 25)
+
+Function name: async::e (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0f, 01, 00, 14]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 15, 1) to (start + 0, 20)
+
+Function name: async::e::{closure#0} (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0f, 14, 00, 19]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 15, 20) to (start + 0, 25)
+
+Function name: async::executor::block_on::<core::pin::Pin<&mut async::i::{closure#0}>>
+Raw bytes (44): 0x[01, 01, 05, 0b, 05, 01, 05, 01, 05, 02, 00, 02, 00, 06, 01, 6e, 05, 0a, 36, 02, 0d, 20, 00, 23, 0b, 00, 27, 00, 49, 0f, 01, 17, 00, 1a, 05, 01, 0e, 00, 0f, 13, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Expression(2, Add), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 3 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 4 operands: lhs = Expression(0, Sub), rhs = Zero
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 110, 5) to (start + 10, 54)
+- Code(Expression(0, Sub)) at (prev + 13, 32) to (start + 0, 35)
+    = ((c0 + c1) - c1)
+- Code(Expression(2, Add)) at (prev + 0, 39) to (start + 0, 73)
+    = (c0 + c1)
+- Code(Expression(3, Add)) at (prev + 1, 23) to (start + 0, 26)
+    = (((c0 + c1) - c1) + Zero)
+- Code(Counter(1)) at (prev + 1, 14) to (start + 0, 15)
+- Code(Expression(4, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (((c0 + c1) - c1) + Zero)
+
+Function name: async::executor::block_on::VTABLE::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 72, 11, 00, 33]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 114, 17) to (start + 0, 51)
+
+Function name: async::executor::block_on::VTABLE::{closure#1}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 73, 11, 00, 33]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 115, 17) to (start + 0, 51)
+
+Function name: async::executor::block_on::VTABLE::{closure#2}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 74, 11, 00, 33]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 116, 17) to (start + 0, 51)
+
+Function name: async::executor::block_on::VTABLE::{closure#3}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 75, 11, 00, 13]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 117, 17) to (start + 0, 19)
+
+Function name: async::f
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 11, 01, 00, 14]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 17, 1) to (start + 0, 20)
+
+Function name: async::f::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 11, 14, 00, 19]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 17, 20) to (start + 0, 25)
+
+Function name: async::foo (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 13, 01, 00, 1e]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 19, 1) to (start + 0, 30)
+
+Function name: async::foo::{closure#0} (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 13, 1e, 00, 2d]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 19, 30) to (start + 0, 45)
+
+Function name: async::g
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 15, 01, 00, 17]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 21, 1) to (start + 0, 23)
+
+Function name: async::g::{closure#0} (unused)
+Raw bytes (69): 0x[01, 01, 00, 0d, 00, 15, 17, 01, 0c, 00, 02, 09, 00, 0a, 01, 00, 0e, 00, 11, 00, 00, 12, 00, 17, 00, 00, 1b, 00, 1c, 00, 00, 20, 00, 22, 00, 01, 09, 00, 0a, 00, 00, 0e, 00, 11, 00, 00, 12, 00, 17, 00, 00, 1b, 00, 1c, 00, 00, 20, 00, 22, 00, 01, 0e, 00, 10, 00, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 13
+- Code(Zero) at (prev + 21, 23) to (start + 1, 12)
+- Code(Zero) at (prev + 2, 9) to (start + 0, 10)
+- Code(Counter(0)) at (prev + 0, 14) to (start + 0, 17)
+- Code(Zero) at (prev + 0, 18) to (start + 0, 23)
+- Code(Zero) at (prev + 0, 27) to (start + 0, 28)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 34)
+- Code(Zero) at (prev + 1, 9) to (start + 0, 10)
+- Code(Zero) at (prev + 0, 14) to (start + 0, 17)
+- Code(Zero) at (prev + 0, 18) to (start + 0, 23)
+- Code(Zero) at (prev + 0, 27) to (start + 0, 28)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 34)
+- Code(Zero) at (prev + 1, 14) to (start + 0, 16)
+- Code(Zero) at (prev + 2, 1) to (start + 0, 2)
+
+Function name: async::h
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1d, 01, 00, 16]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 29, 1) to (start + 0, 22)
+
+Function name: async::h::{closure#0} (unused)
+Raw bytes (44): 0x[01, 01, 00, 08, 00, 1d, 16, 03, 0c, 00, 04, 09, 00, 0a, 01, 00, 0e, 00, 13, 00, 00, 14, 00, 19, 00, 00, 1a, 00, 1b, 00, 00, 20, 00, 22, 00, 01, 0e, 00, 10, 00, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 8
+- Code(Zero) at (prev + 29, 22) to (start + 3, 12)
+- Code(Zero) at (prev + 4, 9) to (start + 0, 10)
+- Code(Counter(0)) at (prev + 0, 14) to (start + 0, 19)
+- Code(Zero) at (prev + 0, 20) to (start + 0, 25)
+- Code(Zero) at (prev + 0, 26) to (start + 0, 27)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 34)
+- Code(Zero) at (prev + 1, 14) to (start + 0, 16)
+- Code(Zero) at (prev + 2, 1) to (start + 0, 2)
+
+Function name: async::i
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 26, 01, 00, 13]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 38, 1) to (start + 0, 19)
+
+Function name: async::i::{closure#0}
+Raw bytes (84): 0x[01, 01, 05, 01, 00, 0d, 00, 1d, 00, 19, 13, 1d, 21, 0e, 01, 26, 13, 04, 0c, 0d, 05, 09, 00, 0a, 03, 00, 0e, 00, 12, 05, 00, 13, 00, 18, 09, 00, 1c, 00, 21, 07, 00, 27, 00, 2a, 15, 00, 2b, 00, 30, 1d, 01, 09, 00, 0a, 11, 00, 0e, 00, 11, 25, 00, 12, 00, 17, 29, 00, 1b, 00, 20, 0b, 00, 24, 00, 26, 21, 01, 0e, 00, 10, 0f, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(0), rhs = Zero
+- expression 1 operands: lhs = Counter(3), rhs = Zero
+- expression 2 operands: lhs = Counter(7), rhs = Zero
+- expression 3 operands: lhs = Counter(6), rhs = Expression(4, Add)
+- expression 4 operands: lhs = Counter(7), rhs = Counter(8)
+Number of file 0 mappings: 14
+- Code(Counter(0)) at (prev + 38, 19) to (start + 4, 12)
+- Code(Counter(3)) at (prev + 5, 9) to (start + 0, 10)
+- Code(Expression(0, Add)) at (prev + 0, 14) to (start + 0, 18)
+    = (c0 + Zero)
+- Code(Counter(1)) at (prev + 0, 19) to (start + 0, 24)
+- Code(Counter(2)) at (prev + 0, 28) to (start + 0, 33)
+- Code(Expression(1, Add)) at (prev + 0, 39) to (start + 0, 42)
+    = (c3 + Zero)
+- Code(Counter(5)) at (prev + 0, 43) to (start + 0, 48)
+- Code(Counter(7)) at (prev + 1, 9) to (start + 0, 10)
+- Code(Counter(4)) at (prev + 0, 14) to (start + 0, 17)
+- Code(Counter(9)) at (prev + 0, 18) to (start + 0, 23)
+- Code(Counter(10)) at (prev + 0, 27) to (start + 0, 32)
+- Code(Expression(2, Add)) at (prev + 0, 36) to (start + 0, 38)
+    = (c7 + Zero)
+- Code(Counter(8)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(3, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c6 + (c7 + c8))
+
+Function name: async::j
+Raw bytes (59): 0x[01, 01, 05, 01, 00, 05, 00, 09, 00, 05, 13, 09, 0d, 09, 01, 31, 01, 13, 0c, 05, 14, 09, 00, 0a, 03, 00, 0e, 00, 1b, 07, 00, 1f, 00, 27, 09, 01, 09, 00, 0a, 11, 00, 0e, 00, 1a, 0b, 00, 1e, 00, 20, 0d, 01, 0e, 00, 10, 0f, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(0), rhs = Zero
+- expression 1 operands: lhs = Counter(1), rhs = Zero
+- expression 2 operands: lhs = Counter(2), rhs = Zero
+- expression 3 operands: lhs = Counter(1), rhs = Expression(4, Add)
+- expression 4 operands: lhs = Counter(2), rhs = Counter(3)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 49, 1) to (start + 19, 12)
+- Code(Counter(1)) at (prev + 20, 9) to (start + 0, 10)
+- Code(Expression(0, Add)) at (prev + 0, 14) to (start + 0, 27)
+    = (c0 + Zero)
+- Code(Expression(1, Add)) at (prev + 0, 31) to (start + 0, 39)
+    = (c1 + Zero)
+- Code(Counter(2)) at (prev + 1, 9) to (start + 0, 10)
+- Code(Counter(4)) at (prev + 0, 14) to (start + 0, 26)
+- Code(Expression(2, Add)) at (prev + 0, 30) to (start + 0, 32)
+    = (c2 + Zero)
+- Code(Counter(3)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(3, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c1 + (c2 + c3))
+
+Function name: async::j::c
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 33, 05, 01, 12, 05, 02, 0d, 00, 0e, 02, 0a, 0d, 00, 0e, 07, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 51, 5) to (start + 1, 18)
+- Code(Counter(1)) at (prev + 2, 13) to (start + 0, 14)
+- Code(Expression(0, Sub)) at (prev + 10, 13) to (start + 0, 14)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (c1 + (c0 - c1))
+
+Function name: async::j::d
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 42, 05, 00, 17]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 66, 5) to (start + 0, 23)
+
+Function name: async::j::f
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 43, 05, 00, 17]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 67, 5) to (start + 0, 23)
+
+Function name: async::k (unused)
+Raw bytes (29): 0x[01, 01, 00, 05, 01, 4b, 01, 01, 0c, 00, 02, 0e, 00, 10, 00, 01, 0e, 00, 10, 00, 01, 0e, 00, 10, 00, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 5
+- Code(Counter(0)) at (prev + 75, 1) to (start + 1, 12)
+- Code(Zero) at (prev + 2, 14) to (start + 0, 16)
+- Code(Zero) at (prev + 1, 14) to (start + 0, 16)
+- Code(Zero) at (prev + 1, 14) to (start + 0, 16)
+- Code(Zero) at (prev + 2, 1) to (start + 0, 2)
+
+Function name: async::l
+Raw bytes (37): 0x[01, 01, 04, 01, 07, 09, 05, 09, 0f, 05, 02, 05, 01, 53, 01, 01, 0c, 02, 02, 0e, 00, 10, 05, 01, 0e, 00, 10, 09, 01, 0e, 00, 10, 0b, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 4
+- expression 0 operands: lhs = Counter(0), rhs = Expression(1, Add)
+- expression 1 operands: lhs = Counter(2), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(2), rhs = Expression(3, Add)
+- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 5
+- Code(Counter(0)) at (prev + 83, 1) to (start + 1, 12)
+- Code(Expression(0, Sub)) at (prev + 2, 14) to (start + 0, 16)
+    = (c0 - (c2 + c1))
+- Code(Counter(1)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Counter(2)) at (prev + 1, 14) to (start + 0, 16)
+- Code(Expression(2, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c2 + (c1 + (c0 - (c2 + c1))))
+
+Function name: async::m
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 5b, 01, 00, 19]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 91, 1) to (start + 0, 25)
+
+Function name: async::m::{closure#0} (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 5b, 19, 00, 22]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 91, 25) to (start + 0, 34)
+
+Function name: async::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 5d, 01, 08, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 93, 1) to (start + 8, 2)
+
diff --git a/tests/coverage-map/status-quo/async.rs b/tests/coverage-map/status-quo/async.rs
new file mode 100644
index 00000000000..efd9e62d64e
--- /dev/null
+++ b/tests/coverage-map/status-quo/async.rs
@@ -0,0 +1,128 @@
+#![allow(unused_assignments, dead_code)]
+
+// compile-flags: --edition=2018 -C opt-level=1
+
+async fn c(x: u8) -> u8 {
+    if x == 8 {
+        1
+    } else {
+        0
+    }
+}
+
+async fn d() -> u8 { 1 }
+
+async fn e() -> u8 { 1 } // unused function; executor does not block on `g()`
+
+async fn f() -> u8 { 1 }
+
+async fn foo() -> [bool; 10] { [false; 10] } // unused function; executor does not block on `h()`
+
+pub async fn g(x: u8) {
+    match x {
+        y if e().await == y => (),
+        y if f().await == y => (),
+        _ => (),
+    }
+}
+
+async fn h(x: usize) { // The function signature is counted when called, but the body is not
+                       // executed (not awaited) so the open brace has a `0` count (at least when
+                       // displayed with `llvm-cov show` in color-mode).
+    match x {
+        y if foo().await[y] => (),
+        _ => (),
+    }
+}
+
+async fn i(x: u8) { // line coverage is 1, but there are 2 regions:
+                    // (a) the function signature, counted when the function is called; and
+                    // (b) the open brace for the function body, counted once when the body is
+                    // executed asynchronously.
+    match x {
+        y if c(x).await == y + 1 => { d().await; }
+        y if f().await == y + 1 => (),
+        _ => (),
+    }
+}
+
+fn j(x: u8) {
+    // non-async versions of `c()`, `d()`, and `f()` to make it similar to async `i()`.
+    fn c(x: u8) -> u8 {
+        if x == 8 {
+            1 // This line appears covered, but the 1-character expression span covering the `1`
+              // is not executed. (`llvm-cov show` displays a `^0` below the `1` ). This is because
+              // `fn j()` executes the open brace for the function body, followed by the function's
+              // first executable statement, `match x`. Inner function declarations are not
+              // "visible" to the MIR for `j()`, so the code region counts all lines between the
+              // open brace and the first statement as executed, which is, in a sense, true.
+              // `llvm-cov show` overcomes this kind of situation by showing the actual counts
+              // of the enclosed coverages, (that is, the `1` expression was not executed, and
+              // accurately displays a `0`).
+        } else {
+            0
+        }
+    }
+    fn d() -> u8 { 1 } // inner function is defined in-line, but the function is not executed
+    fn f() -> u8 { 1 }
+    match x {
+        y if c(x) == y + 1 => { d(); }
+        y if f() == y + 1 => (),
+        _ => (),
+    }
+}
+
+fn k(x: u8) { // unused function
+    match x {
+        1 => (),
+        2 => (),
+        _ => (),
+    }
+}
+
+fn l(x: u8) {
+    match x {
+        1 => (),
+        2 => (),
+        _ => (),
+    }
+}
+
+async fn m(x: u8) -> u8 { x - 1 }
+
+fn main() {
+    let _ = g(10);
+    let _ = h(9);
+    let mut future = Box::pin(i(8));
+    j(7);
+    l(6);
+    let _ = m(5);
+    executor::block_on(future.as_mut());
+}
+
+mod executor {
+    use core::{
+        future::Future,
+        pin::Pin,
+        task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
+    };
+
+    pub fn block_on<F: Future>(mut future: F) -> F::Output {
+        let mut future = unsafe { Pin::new_unchecked(&mut future) };
+        use std::hint::unreachable_unchecked;
+        static VTABLE: RawWakerVTable = RawWakerVTable::new(
+            |_| unsafe { unreachable_unchecked() }, // clone
+            |_| unsafe { unreachable_unchecked() }, // wake
+            |_| unsafe { unreachable_unchecked() }, // wake_by_ref
+            |_| (),
+        );
+        let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
+        let mut context = Context::from_waker(&waker);
+
+        loop {
+            if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
+                break val;
+            }
+        }
+    }
+}
diff --git a/tests/coverage-map/status-quo/async2.cov-map b/tests/coverage-map/status-quo/async2.cov-map
new file mode 100644
index 00000000000..fe74dcd8840
--- /dev/null
+++ b/tests/coverage-map/status-quo/async2.cov-map
@@ -0,0 +1,136 @@
+Function name: async2::async_func
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0b, 01, 00, 17]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 11, 1) to (start + 0, 23)
+
+Function name: async2::async_func::{closure#0}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 0b, 17, 03, 09, 05, 03, 0a, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 11, 23) to (start + 3, 9)
+- Code(Counter(1)) at (prev + 3, 10) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: async2::async_func_just_println
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 13, 01, 00, 24]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 19, 1) to (start + 0, 36)
+
+Function name: async2::async_func_just_println::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 13, 24, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 19, 36) to (start + 2, 2)
+
+Function name: async2::executor::block_on::<async2::async_func::{closure#0}>
+Raw bytes (44): 0x[01, 01, 05, 0b, 05, 01, 05, 01, 05, 02, 00, 02, 00, 06, 01, 27, 05, 0a, 36, 02, 0d, 20, 00, 23, 0b, 00, 27, 00, 49, 0f, 01, 17, 00, 1a, 05, 01, 0e, 00, 0f, 13, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Expression(2, Add), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 3 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 4 operands: lhs = Expression(0, Sub), rhs = Zero
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 39, 5) to (start + 10, 54)
+- Code(Expression(0, Sub)) at (prev + 13, 32) to (start + 0, 35)
+    = ((c0 + c1) - c1)
+- Code(Expression(2, Add)) at (prev + 0, 39) to (start + 0, 73)
+    = (c0 + c1)
+- Code(Expression(3, Add)) at (prev + 1, 23) to (start + 0, 26)
+    = (((c0 + c1) - c1) + Zero)
+- Code(Counter(1)) at (prev + 1, 14) to (start + 0, 15)
+- Code(Expression(4, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (((c0 + c1) - c1) + Zero)
+
+Function name: async2::executor::block_on::<async2::async_func_just_println::{closure#0}>
+Raw bytes (44): 0x[01, 01, 05, 0b, 05, 01, 05, 01, 05, 02, 00, 02, 00, 06, 01, 27, 05, 0a, 36, 02, 0d, 20, 00, 23, 0b, 00, 27, 00, 49, 0f, 01, 17, 00, 1a, 05, 01, 0e, 00, 0f, 13, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Expression(2, Add), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 3 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 4 operands: lhs = Expression(0, Sub), rhs = Zero
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 39, 5) to (start + 10, 54)
+- Code(Expression(0, Sub)) at (prev + 13, 32) to (start + 0, 35)
+    = ((c0 + c1) - c1)
+- Code(Expression(2, Add)) at (prev + 0, 39) to (start + 0, 73)
+    = (c0 + c1)
+- Code(Expression(3, Add)) at (prev + 1, 23) to (start + 0, 26)
+    = (((c0 + c1) - c1) + Zero)
+- Code(Counter(1)) at (prev + 1, 14) to (start + 0, 15)
+- Code(Expression(4, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (((c0 + c1) - c1) + Zero)
+
+Function name: async2::executor::block_on::VTABLE::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 2b, 11, 00, 33]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 43, 17) to (start + 0, 51)
+
+Function name: async2::executor::block_on::VTABLE::{closure#1}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 2c, 11, 00, 33]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 44, 17) to (start + 0, 51)
+
+Function name: async2::executor::block_on::VTABLE::{closure#2}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 2d, 11, 00, 33]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 45, 17) to (start + 0, 51)
+
+Function name: async2::executor::block_on::VTABLE::{closure#3}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 2e, 11, 00, 13]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 46, 17) to (start + 0, 19)
+
+Function name: async2::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 17, 01, 07, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 23, 1) to (start + 7, 2)
+
+Function name: async2::non_async_func
+Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 03, 01, 03, 09, 05, 03, 0a, 02, 06, 00, 02, 06, 00, 07, 03, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 3, 1) to (start + 3, 9)
+- Code(Counter(1)) at (prev + 3, 10) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(0, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + Zero)
+
diff --git a/tests/coverage-map/status-quo/async2.rs b/tests/coverage-map/status-quo/async2.rs
new file mode 100644
index 00000000000..2884ff297af
--- /dev/null
+++ b/tests/coverage-map/status-quo/async2.rs
@@ -0,0 +1,57 @@
+// compile-flags: --edition=2018
+
+fn non_async_func() {
+    println!("non_async_func was covered");
+    let b = true;
+    if b {
+        println!("non_async_func println in block");
+    }
+}
+
+async fn async_func() {
+    println!("async_func was covered");
+    let b = true;
+    if b {
+        println!("async_func println in block");
+    }
+}
+
+async fn async_func_just_println() {
+    println!("async_func_just_println was covered");
+}
+
+fn main() {
+    println!("codecovsample::main");
+
+    non_async_func();
+
+    executor::block_on(async_func());
+    executor::block_on(async_func_just_println());
+}
+
+mod executor {
+    use core::{
+        future::Future,
+        pin::Pin,
+        task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
+    };
+
+    pub fn block_on<F: Future>(mut future: F) -> F::Output {
+        let mut future = unsafe { Pin::new_unchecked(&mut future) };
+        use std::hint::unreachable_unchecked;
+        static VTABLE: RawWakerVTable = RawWakerVTable::new(
+            |_| unsafe { unreachable_unchecked() }, // clone
+            |_| unsafe { unreachable_unchecked() }, // wake
+            |_| unsafe { unreachable_unchecked() }, // wake_by_ref
+            |_| (),
+        );
+        let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
+        let mut context = Context::from_waker(&waker);
+
+        loop {
+            if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
+                break val;
+            }
+        }
+    }
+}
diff --git a/tests/coverage-map/status-quo/closure.cov-map b/tests/coverage-map/status-quo/closure.cov-map
new file mode 100644
index 00000000000..f3a32f091a9
--- /dev/null
+++ b/tests/coverage-map/status-quo/closure.cov-map
@@ -0,0 +1,324 @@
+Function name: closure::main
+Raw bytes (170): 0x[01, 01, 17, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 00, 01, 05, 05, 5a, 01, 05, 18, 01, 08, 01, 0f, 0d, 03, 16, 0e, 06, 0a, 07, 10, 05, 13, 0d, 0b, 1a, 0e, 08, 09, 0f, 10, 05, 0e, 09, 13, 16, 05, 0d, 18, 17, 19, 09, 01, 21, 1b, 04, 09, 00, 29, 1f, 01, 09, 00, 2d, 23, 01, 09, 00, 24, 27, 05, 09, 00, 24, 2b, 02, 09, 00, 21, 2f, 04, 09, 00, 21, 33, 04, 09, 00, 28, 37, 09, 09, 00, 32, 3b, 04, 09, 00, 33, 3f, 07, 09, 00, 4b, 43, 08, 09, 01, 09, 47, 0a, 09, 01, 09, 4b, 08, 09, 01, 09, 4f, 0a, 08, 00, 10, 05, 00, 11, 04, 06, 5a, 04, 06, 00, 07, 57, 01, 05, 03, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 23
+- expression 0 operands: lhs = Counter(0), rhs = Zero
+- expression 1 operands: lhs = Counter(0), rhs = Zero
+- expression 2 operands: lhs = Counter(0), rhs = Zero
+- expression 3 operands: lhs = Counter(0), rhs = Zero
+- expression 4 operands: lhs = Counter(0), rhs = Zero
+- expression 5 operands: lhs = Counter(0), rhs = Zero
+- expression 6 operands: lhs = Counter(0), rhs = Zero
+- expression 7 operands: lhs = Counter(0), rhs = Zero
+- expression 8 operands: lhs = Counter(0), rhs = Zero
+- expression 9 operands: lhs = Counter(0), rhs = Zero
+- expression 10 operands: lhs = Counter(0), rhs = Zero
+- expression 11 operands: lhs = Counter(0), rhs = Zero
+- expression 12 operands: lhs = Counter(0), rhs = Zero
+- expression 13 operands: lhs = Counter(0), rhs = Zero
+- expression 14 operands: lhs = Counter(0), rhs = Zero
+- expression 15 operands: lhs = Counter(0), rhs = Zero
+- expression 16 operands: lhs = Counter(0), rhs = Zero
+- expression 17 operands: lhs = Counter(0), rhs = Zero
+- expression 18 operands: lhs = Counter(0), rhs = Zero
+- expression 19 operands: lhs = Counter(0), rhs = Zero
+- expression 20 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 21 operands: lhs = Counter(1), rhs = Expression(22, Sub)
+- expression 22 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 24
+- Code(Counter(0)) at (prev + 8, 1) to (start + 15, 13)
+- Code(Expression(0, Add)) at (prev + 22, 14) to (start + 6, 10)
+    = (c0 + Zero)
+- Code(Expression(1, Add)) at (prev + 16, 5) to (start + 19, 13)
+    = (c0 + Zero)
+- Code(Expression(2, Add)) at (prev + 26, 14) to (start + 8, 9)
+    = (c0 + Zero)
+- Code(Expression(3, Add)) at (prev + 16, 5) to (start + 14, 9)
+    = (c0 + Zero)
+- Code(Expression(4, Add)) at (prev + 22, 5) to (start + 13, 24)
+    = (c0 + Zero)
+- Code(Expression(5, Add)) at (prev + 25, 9) to (start + 1, 33)
+    = (c0 + Zero)
+- Code(Expression(6, Add)) at (prev + 4, 9) to (start + 0, 41)
+    = (c0 + Zero)
+- Code(Expression(7, Add)) at (prev + 1, 9) to (start + 0, 45)
+    = (c0 + Zero)
+- Code(Expression(8, Add)) at (prev + 1, 9) to (start + 0, 36)
+    = (c0 + Zero)
+- Code(Expression(9, Add)) at (prev + 5, 9) to (start + 0, 36)
+    = (c0 + Zero)
+- Code(Expression(10, Add)) at (prev + 2, 9) to (start + 0, 33)
+    = (c0 + Zero)
+- Code(Expression(11, Add)) at (prev + 4, 9) to (start + 0, 33)
+    = (c0 + Zero)
+- Code(Expression(12, Add)) at (prev + 4, 9) to (start + 0, 40)
+    = (c0 + Zero)
+- Code(Expression(13, Add)) at (prev + 9, 9) to (start + 0, 50)
+    = (c0 + Zero)
+- Code(Expression(14, Add)) at (prev + 4, 9) to (start + 0, 51)
+    = (c0 + Zero)
+- Code(Expression(15, Add)) at (prev + 7, 9) to (start + 0, 75)
+    = (c0 + Zero)
+- Code(Expression(16, Add)) at (prev + 8, 9) to (start + 1, 9)
+    = (c0 + Zero)
+- Code(Expression(17, Add)) at (prev + 10, 9) to (start + 1, 9)
+    = (c0 + Zero)
+- Code(Expression(18, Add)) at (prev + 8, 9) to (start + 1, 9)
+    = (c0 + Zero)
+- Code(Expression(19, Add)) at (prev + 10, 8) to (start + 0, 16)
+    = (c0 + Zero)
+- Code(Counter(1)) at (prev + 0, 17) to (start + 4, 6)
+- Code(Expression(22, Sub)) at (prev + 4, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(21, Add)) at (prev + 1, 5) to (start + 3, 2)
+    = (c1 + (c0 - c1))
+
+Function name: closure::main::{closure#0}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 27, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 07, 01, 09, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 39, 5) to (start + 2, 20)
+- Code(Counter(1)) at (prev + 2, 21) to (start + 2, 10)
+- Code(Expression(0, Sub)) at (prev + 2, 10) to (start + 0, 11)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 1, 6)
+    = (c1 + (c0 - c1))
+
+Function name: closure::main::{closure#10} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 9a, 01, 07, 00, 21]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 154, 7) to (start + 0, 33)
+
+Function name: closure::main::{closure#11} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 9e, 01, 07, 00, 21]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 158, 7) to (start + 0, 33)
+
+Function name: closure::main::{closure#12} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, a6, 01, 01, 00, 17]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 166, 1) to (start + 0, 23)
+
+Function name: closure::main::{closure#13} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, ab, 01, 0d, 02, 0e]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 171, 13) to (start + 2, 14)
+
+Function name: closure::main::{closure#14}
+Raw bytes (38): 0x[01, 01, 04, 05, 0a, 01, 05, 01, 05, 03, 00, 05, 03, b2, 01, 0d, 00, 15, 01, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 0a, 00, 2f, 00, 33, 0f, 01, 0d, 00, 0e]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 4
+- expression 0 operands: lhs = Counter(1), rhs = Expression(2, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Zero
+Number of file 0 mappings: 5
+- Code(Expression(0, Add)) at (prev + 178, 13) to (start + 0, 21)
+    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 17) to (start + 1, 27)
+- Code(Counter(1)) at (prev + 1, 30) to (start + 0, 37)
+- Code(Expression(2, Sub)) at (prev + 0, 47) to (start + 0, 51)
+    = (c0 - c1)
+- Code(Expression(3, Add)) at (prev + 1, 13) to (start + 0, 14)
+    = ((c1 + (c0 - c1)) + Zero)
+
+Function name: closure::main::{closure#15}
+Raw bytes (45): 0x[01, 01, 05, 05, 0e, 01, 05, 01, 00, 01, 05, 03, 00, 06, 01, ba, 01, 09, 00, 0a, 03, 01, 0d, 00, 15, 0b, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 0e, 00, 2f, 00, 33, 13, 02, 09, 00, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(1), rhs = Expression(3, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Zero
+- expression 3 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 4 operands: lhs = Expression(0, Add), rhs = Zero
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 186, 9) to (start + 0, 10)
+- Code(Expression(0, Add)) at (prev + 1, 13) to (start + 0, 21)
+    = (c1 + (c0 - c1))
+- Code(Expression(2, Add)) at (prev + 1, 17) to (start + 1, 27)
+    = (c0 + Zero)
+- Code(Counter(1)) at (prev + 1, 30) to (start + 0, 37)
+- Code(Expression(3, Sub)) at (prev + 0, 47) to (start + 0, 51)
+    = (c0 - c1)
+- Code(Expression(4, Add)) at (prev + 2, 9) to (start + 0, 10)
+    = ((c1 + (c0 - c1)) + Zero)
+
+Function name: closure::main::{closure#16}
+Raw bytes (38): 0x[01, 01, 04, 05, 0a, 01, 05, 01, 05, 03, 00, 05, 03, c4, 01, 0d, 00, 15, 01, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 0a, 00, 2f, 00, 33, 0f, 01, 0d, 00, 0e]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 4
+- expression 0 operands: lhs = Counter(1), rhs = Expression(2, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Zero
+Number of file 0 mappings: 5
+- Code(Expression(0, Add)) at (prev + 196, 13) to (start + 0, 21)
+    = (c1 + (c0 - c1))
+- Code(Counter(0)) at (prev + 1, 17) to (start + 1, 27)
+- Code(Counter(1)) at (prev + 1, 30) to (start + 0, 37)
+- Code(Expression(2, Sub)) at (prev + 0, 47) to (start + 0, 51)
+    = (c0 - c1)
+- Code(Expression(3, Add)) at (prev + 1, 13) to (start + 0, 14)
+    = ((c1 + (c0 - c1)) + Zero)
+
+Function name: closure::main::{closure#17}
+Raw bytes (45): 0x[01, 01, 05, 05, 0e, 01, 05, 01, 00, 01, 05, 03, 00, 06, 01, cc, 01, 09, 00, 0a, 03, 01, 0d, 00, 15, 0b, 01, 11, 01, 1b, 05, 01, 1e, 00, 25, 0e, 00, 2f, 00, 33, 13, 02, 09, 00, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(1), rhs = Expression(3, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(0), rhs = Zero
+- expression 3 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 4 operands: lhs = Expression(0, Add), rhs = Zero
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 204, 9) to (start + 0, 10)
+- Code(Expression(0, Add)) at (prev + 1, 13) to (start + 0, 21)
+    = (c1 + (c0 - c1))
+- Code(Expression(2, Add)) at (prev + 1, 17) to (start + 1, 27)
+    = (c0 + Zero)
+- Code(Counter(1)) at (prev + 1, 30) to (start + 0, 37)
+- Code(Expression(3, Sub)) at (prev + 0, 47) to (start + 0, 51)
+    = (c0 - c1)
+- Code(Expression(4, Add)) at (prev + 2, 9) to (start + 0, 10)
+    = ((c1 + (c0 - c1)) + Zero)
+
+Function name: closure::main::{closure#18}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 18, 0d, 02, 1c, 05, 02, 1d, 02, 12, 02, 02, 12, 00, 13, 07, 01, 11, 01, 0e]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 24, 13) to (start + 2, 28)
+- Code(Counter(1)) at (prev + 2, 29) to (start + 2, 18)
+- Code(Expression(0, Sub)) at (prev + 2, 18) to (start + 0, 19)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 17) to (start + 1, 14)
+    = (c1 + (c0 - c1))
+
+Function name: closure::main::{closure#19}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 42, 0d, 02, 1c, 05, 02, 1d, 02, 12, 02, 02, 12, 00, 13, 07, 01, 11, 01, 0e]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 66, 13) to (start + 2, 28)
+- Code(Counter(1)) at (prev + 2, 29) to (start + 2, 18)
+- Code(Expression(0, Sub)) at (prev + 2, 18) to (start + 0, 19)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 17) to (start + 1, 14)
+    = (c1 + (c0 - c1))
+
+Function name: closure::main::{closure#1}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 51, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 07, 01, 09, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 81, 5) to (start + 2, 20)
+- Code(Counter(1)) at (prev + 2, 21) to (start + 2, 10)
+- Code(Expression(0, Sub)) at (prev + 2, 10) to (start + 0, 11)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 1, 6)
+    = (c1 + (c0 - c1))
+
+Function name: closure::main::{closure#2}
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 67, 05, 02, 14, 05, 02, 15, 02, 0a, 02, 02, 0a, 00, 0b, 07, 01, 09, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 103, 5) to (start + 2, 20)
+- Code(Counter(1)) at (prev + 2, 21) to (start + 2, 10)
+- Code(Expression(0, Sub)) at (prev + 2, 10) to (start + 0, 11)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 1, 6)
+    = (c1 + (c0 - c1))
+
+Function name: closure::main::{closure#3} (unused)
+Raw bytes (25): 0x[01, 01, 00, 04, 01, 80, 01, 05, 01, 14, 00, 01, 15, 02, 0a, 00, 02, 0a, 00, 0b, 00, 01, 09, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 128, 5) to (start + 1, 20)
+- Code(Zero) at (prev + 1, 21) to (start + 2, 10)
+- Code(Zero) at (prev + 2, 10) to (start + 0, 11)
+- Code(Zero) at (prev + 1, 9) to (start + 1, 6)
+
+Function name: closure::main::{closure#4} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 88, 01, 35, 00, 43]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 136, 53) to (start + 0, 67)
+
+Function name: closure::main::{closure#5}
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 8b, 01, 3d, 00, 4f]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 139, 61) to (start + 0, 79)
+
+Function name: closure::main::{closure#6}
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 8c, 01, 41, 00, 57]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 140, 65) to (start + 0, 87)
+
+Function name: closure::main::{closure#7} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 8d, 01, 3b, 00, 51]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 141, 59) to (start + 0, 81)
+
+Function name: closure::main::{closure#8} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 92, 01, 3b, 00, 55]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 146, 59) to (start + 0, 85)
+
+Function name: closure::main::{closure#9} (unused)
+Raw bytes (10): 0x[01, 01, 00, 01, 01, 94, 01, 38, 02, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 148, 56) to (start + 2, 6)
+
diff --git a/tests/coverage-map/status-quo/closure.rs b/tests/coverage-map/status-quo/closure.rs
new file mode 100644
index 00000000000..16a2c4e33bd
--- /dev/null
+++ b/tests/coverage-map/status-quo/closure.rs
@@ -0,0 +1,220 @@
+#![allow(unused_assignments, unused_variables)]
+// compile-flags: -C opt-level=2
+
+// This test used to be sensitive to certain coverage-specific hacks in
+// `rustc_middle/mir/mono.rs`, but those hacks were later cleaned up by
+// <https://github.com/rust-lang/rust/pull/83666>.
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+    let is_false = !is_true;
+
+    let mut some_string = Some(String::from("the string content"));
+    println!(
+        "The string or alt: {}"
+        ,
+        some_string
+            .
+            unwrap_or_else
+        (
+            ||
+            {
+                let mut countdown = 0;
+                if is_false {
+                    countdown = 10;
+                }
+                "alt string 1".to_owned()
+            }
+        )
+    );
+
+    some_string = Some(String::from("the string content"));
+    let
+        a
+    =
+        ||
+    {
+        let mut countdown = 0;
+        if is_false {
+            countdown = 10;
+        }
+        "alt string 2".to_owned()
+    };
+    println!(
+        "The string or alt: {}"
+        ,
+        some_string
+            .
+            unwrap_or_else
+        (
+            a
+        )
+    );
+
+    some_string = None;
+    println!(
+        "The string or alt: {}"
+        ,
+        some_string
+            .
+            unwrap_or_else
+        (
+            ||
+            {
+                let mut countdown = 0;
+                if is_false {
+                    countdown = 10;
+                }
+                "alt string 3".to_owned()
+            }
+        )
+    );
+
+    some_string = None;
+    let
+        a
+    =
+        ||
+    {
+        let mut countdown = 0;
+        if is_false {
+            countdown = 10;
+        }
+        "alt string 4".to_owned()
+    };
+    println!(
+        "The string or alt: {}"
+        ,
+        some_string
+            .
+            unwrap_or_else
+        (
+            a
+        )
+    );
+
+    let
+        quote_closure
+    =
+        |val|
+    {
+        let mut countdown = 0;
+        if is_false {
+            countdown = 10;
+        }
+        format!("'{}'", val)
+    };
+    println!(
+        "Repeated, quoted string: {:?}"
+        ,
+        std::iter::repeat("repeat me")
+            .take(5)
+            .map
+        (
+            quote_closure
+        )
+            .collect::<Vec<_>>()
+    );
+
+    let
+        _unused_closure
+    =
+        |
+            mut countdown
+        |
+    {
+        if is_false {
+            countdown = 10;
+        }
+        "closure should be unused".to_owned()
+    };
+
+    let mut countdown = 10;
+    let _short_unused_closure = | _unused_arg: u8 | countdown += 1;
+
+
+    let short_used_covered_closure_macro = | used_arg: u8 | println!("called");
+    let short_used_not_covered_closure_macro = | used_arg: u8 | println!("not called");
+    let _short_unused_closure_macro = | _unused_arg: u8 | println!("not called");
+
+
+
+
+    let _short_unused_closure_block = | _unused_arg: u8 | { println!("not called") };
+
+    let _shortish_unused_closure = | _unused_arg: u8 | {
+        println!("not called")
+    };
+
+    let _as_short_unused_closure = |
+        _unused_arg: u8
+    | { println!("not called") };
+
+    let _almost_as_short_unused_closure = |
+        _unused_arg: u8
+    | { println!("not called") }
+    ;
+
+
+
+
+
+    let _short_unused_closure_line_break_no_block = | _unused_arg: u8 |
+println!("not called")
+    ;
+
+    let _short_unused_closure_line_break_no_block2 =
+        | _unused_arg: u8 |
+            println!(
+                "not called"
+            )
+    ;
+
+    let short_used_not_covered_closure_line_break_no_block_embedded_branch =
+        | _unused_arg: u8 |
+            println!(
+                "not called: {}",
+                if is_true { "check" } else { "me" }
+            )
+    ;
+
+    let short_used_not_covered_closure_line_break_block_embedded_branch =
+        | _unused_arg: u8 |
+        {
+            println!(
+                "not called: {}",
+                if is_true { "check" } else { "me" }
+            )
+        }
+    ;
+
+    let short_used_covered_closure_line_break_no_block_embedded_branch =
+        | _unused_arg: u8 |
+            println!(
+                "not called: {}",
+                if is_true { "check" } else { "me" }
+            )
+    ;
+
+    let short_used_covered_closure_line_break_block_embedded_branch =
+        | _unused_arg: u8 |
+        {
+            println!(
+                "not called: {}",
+                if is_true { "check" } else { "me" }
+            )
+        }
+    ;
+
+    if is_false {
+        short_used_not_covered_closure_macro(0);
+        short_used_not_covered_closure_line_break_no_block_embedded_branch(0);
+        short_used_not_covered_closure_line_break_block_embedded_branch(0);
+    }
+    short_used_covered_closure_macro(0);
+    short_used_covered_closure_line_break_no_block_embedded_branch(0);
+    short_used_covered_closure_line_break_block_embedded_branch(0);
+}
diff --git a/tests/coverage-map/status-quo/closure_macro.cov-map b/tests/coverage-map/status-quo/closure_macro.cov-map
new file mode 100644
index 00000000000..ac017eb4468
--- /dev/null
+++ b/tests/coverage-map/status-quo/closure_macro.cov-map
@@ -0,0 +1,40 @@
+Function name: closure_macro::load_configuration_files
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1d, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 29, 1) to (start + 2, 2)
+
+Function name: closure_macro::main
+Raw bytes (49): 0x[01, 01, 05, 01, 05, 02, 00, 05, 00, 02, 00, 05, 02, 07, 01, 21, 01, 01, 21, 02, 02, 09, 00, 0f, 05, 00, 12, 00, 13, 07, 00, 12, 00, 13, 0b, 00, 54, 00, 55, 0f, 02, 09, 02, 0b, 13, 03, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 2 operands: lhs = Counter(1), rhs = Zero
+- expression 3 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 4 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 7
+- Code(Counter(0)) at (prev + 33, 1) to (start + 1, 33)
+- Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 15)
+    = (c0 - c1)
+- Code(Counter(1)) at (prev + 0, 18) to (start + 0, 19)
+- Code(Expression(1, Add)) at (prev + 0, 18) to (start + 0, 19)
+    = ((c0 - c1) + Zero)
+- Code(Expression(2, Add)) at (prev + 0, 84) to (start + 0, 85)
+    = (c1 + Zero)
+- Code(Expression(3, Add)) at (prev + 2, 9) to (start + 2, 11)
+    = ((c0 - c1) + Zero)
+- Code(Expression(4, Add)) at (prev + 3, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: closure_macro::main::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 23, 12, 00, 54]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 35, 18) to (start + 0, 84)
+
diff --git a/tests/coverage-map/status-quo/closure_macro.rs b/tests/coverage-map/status-quo/closure_macro.rs
new file mode 100644
index 00000000000..9b289141c2e
--- /dev/null
+++ b/tests/coverage-map/status-quo/closure_macro.rs
@@ -0,0 +1,40 @@
+// compile-flags: --edition=2018
+#![feature(coverage_attribute)]
+
+macro_rules! bail {
+    ($msg:literal $(,)?) => {
+        if $msg.len() > 0 {
+            println!("no msg");
+        } else {
+            println!($msg);
+        }
+        return Err(String::from($msg));
+    };
+}
+
+macro_rules! on_error {
+    ($value:expr, $error_message:expr) => {
+        $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
+            let message = format!($error_message, e);
+            if message.len() > 0 {
+                println!("{}", message);
+                Ok(String::from("ok"))
+            } else {
+                bail!("error");
+            }
+        })
+    };
+}
+
+fn load_configuration_files() -> Result<String, String> {
+    Ok(String::from("config"))
+}
+
+pub fn main() -> Result<(), String> {
+    println!("Starting service");
+    let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
+
+    let startup_delay_duration = String::from("arg");
+    let _ = (config, startup_delay_duration);
+    Ok(())
+}
diff --git a/tests/coverage-map/status-quo/closure_macro_async.cov-map b/tests/coverage-map/status-quo/closure_macro_async.cov-map
new file mode 100644
index 00000000000..c9a142e5aeb
--- /dev/null
+++ b/tests/coverage-map/status-quo/closure_macro_async.cov-map
@@ -0,0 +1,48 @@
+Function name: closure_macro_async::load_configuration_files
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1d, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 29, 1) to (start + 2, 2)
+
+Function name: closure_macro_async::test
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 21, 01, 00, 2b]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 33, 1) to (start + 0, 43)
+
+Function name: closure_macro_async::test::{closure#0}
+Raw bytes (49): 0x[01, 01, 05, 01, 05, 02, 00, 05, 00, 02, 00, 05, 02, 07, 01, 21, 2b, 01, 21, 02, 02, 09, 00, 0f, 05, 00, 12, 00, 13, 07, 00, 12, 00, 13, 0b, 00, 54, 00, 55, 0f, 02, 09, 02, 0b, 13, 03, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 2 operands: lhs = Counter(1), rhs = Zero
+- expression 3 operands: lhs = Expression(0, Sub), rhs = Zero
+- expression 4 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 7
+- Code(Counter(0)) at (prev + 33, 43) to (start + 1, 33)
+- Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 15)
+    = (c0 - c1)
+- Code(Counter(1)) at (prev + 0, 18) to (start + 0, 19)
+- Code(Expression(1, Add)) at (prev + 0, 18) to (start + 0, 19)
+    = ((c0 - c1) + Zero)
+- Code(Expression(2, Add)) at (prev + 0, 84) to (start + 0, 85)
+    = (c1 + Zero)
+- Code(Expression(3, Add)) at (prev + 2, 9) to (start + 2, 11)
+    = ((c0 - c1) + Zero)
+- Code(Expression(4, Add)) at (prev + 3, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: closure_macro_async::test::{closure#0}::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 23, 12, 00, 54]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 35, 18) to (start + 0, 84)
+
diff --git a/tests/coverage-map/status-quo/closure_macro_async.rs b/tests/coverage-map/status-quo/closure_macro_async.rs
new file mode 100644
index 00000000000..b4275599e59
--- /dev/null
+++ b/tests/coverage-map/status-quo/closure_macro_async.rs
@@ -0,0 +1,77 @@
+// compile-flags: --edition=2018
+#![feature(coverage_attribute)]
+
+macro_rules! bail {
+    ($msg:literal $(,)?) => {
+        if $msg.len() > 0 {
+            println!("no msg");
+        } else {
+            println!($msg);
+        }
+        return Err(String::from($msg));
+    };
+}
+
+macro_rules! on_error {
+    ($value:expr, $error_message:expr) => {
+        $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
+            let message = format!($error_message, e);
+            if message.len() > 0 {
+                println!("{}", message);
+                Ok(String::from("ok"))
+            } else {
+                bail!("error");
+            }
+        })
+    };
+}
+
+fn load_configuration_files() -> Result<String, String> {
+    Ok(String::from("config"))
+}
+
+pub async fn test() -> Result<(), String> {
+    println!("Starting service");
+    let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
+
+    let startup_delay_duration = String::from("arg");
+    let _ = (config, startup_delay_duration);
+    Ok(())
+}
+
+#[coverage(off)]
+fn main() {
+    executor::block_on(test()).unwrap();
+}
+
+mod executor {
+    use core::{
+        future::Future,
+        pin::Pin,
+        task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
+    };
+
+    #[coverage(off)]
+    pub fn block_on<F: Future>(mut future: F) -> F::Output {
+        let mut future = unsafe { Pin::new_unchecked(&mut future) };
+        use std::hint::unreachable_unchecked;
+        static VTABLE: RawWakerVTable = RawWakerVTable::new(
+            #[coverage(off)]
+            |_| unsafe { unreachable_unchecked() }, // clone
+            #[coverage(off)]
+            |_| unsafe { unreachable_unchecked() }, // wake
+            #[coverage(off)]
+            |_| unsafe { unreachable_unchecked() }, // wake_by_ref
+            #[coverage(off)]
+            |_| (),
+        );
+        let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
+        let mut context = Context::from_waker(&waker);
+
+        loop {
+            if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
+                break val;
+            }
+        }
+    }
+}
diff --git a/tests/coverage-map/status-quo/conditions.cov-map b/tests/coverage-map/status-quo/conditions.cov-map
new file mode 100644
index 00000000000..d82b8389b4d
--- /dev/null
+++ b/tests/coverage-map/status-quo/conditions.cov-map
@@ -0,0 +1,261 @@
+Function name: conditions::main
+Raw bytes (793): 0x[01, 01, 90, 01, 09, 33, 37, 41, 3b, 3d, 35, 39, 05, 00, bf, 04, 09, 05, 00, 0d, 35, 26, 39, 0d, 35, 3b, 3d, 35, 39, 37, 41, 3b, 3d, 35, 39, ba, 04, 0d, bf, 04, 09, 05, 00, 03, 00, 45, 00, 87, 01, 49, 45, 00, 82, 01, 31, 87, 01, 49, 45, 00, 7e, 4d, 82, 01, 31, 87, 01, 49, 45, 00, 7a, 51, 7e, 4d, 82, 01, 31, 87, 01, 49, 45, 00, ab, 01, 55, 4d, 51, a7, 01, 59, ab, 01, 55, 4d, 51, 49, a3, 01, a7, 01, 59, ab, 01, 55, 4d, 51, 61, 00, e7, 01, 65, 61, 00, e2, 01, 2d, e7, 01, 65, 61, 00, de, 01, 69, e2, 01, 2d, e7, 01, 65, 61, 00, da, 01, 6d, de, 01, 69, e2, 01, 2d, e7, 01, 65, 61, 00, 8f, 02, 71, 69, 6d, 8b, 02, 75, 8f, 02, 71, 69, 6d, 83, 02, 00, 65, 87, 02, 8b, 02, 75, 8f, 02, 71, 69, 6d, 7d, f3, 03, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, 79, 00, db, 02, 7d, 79, 00, d6, 02, 29, db, 02, 7d, 79, 00, d2, 02, 81, 01, d6, 02, 29, db, 02, 7d, 79, 00, ce, 02, 85, 01, d2, 02, 81, 01, d6, 02, 29, db, 02, 7d, 79, 00, fb, 03, 89, 01, 81, 01, 85, 01, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, 11, 9b, 04, 9f, 04, 21, a3, 04, 1d, 15, 19, ef, 03, 00, 7d, f3, 03, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, ef, 03, 11, 7d, f3, 03, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, ea, 03, 25, ef, 03, 11, 7d, f3, 03, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, e6, 03, 15, ea, 03, 25, ef, 03, 11, 7d, f3, 03, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, e2, 03, 19, e6, 03, 15, ea, 03, 25, ef, 03, 11, 7d, f3, 03, f7, 03, 8d, 01, fb, 03, 89, 01, 81, 01, 85, 01, a3, 04, 1d, 15, 19, 9f, 04, 21, a3, 04, 1d, 15, 19, 97, 04, a7, 04, 11, 9b, 04, 9f, 04, 21, a3, 04, 1d, 15, 19, ab, 04, b6, 04, af, 04, b3, 04, 25, 29, 2d, 31, ba, 04, 0d, bf, 04, 09, 05, 00, 44, 01, 03, 01, 02, 0c, 05, 02, 0d, 02, 06, 00, 02, 06, 00, 07, 03, 03, 09, 00, 0a, bf, 04, 00, 10, 00, 1d, 09, 01, 09, 01, 0a, ba, 04, 02, 0f, 00, 1c, 0d, 01, 0c, 00, 19, 26, 00, 1d, 00, 2a, 22, 00, 2e, 00, 3c, 37, 00, 3d, 02, 0a, 41, 02, 0a, 00, 0b, 33, 01, 09, 01, 12, b6, 04, 03, 09, 00, 0f, 4b, 03, 09, 01, 0c, 45, 01, 0d, 02, 06, 00, 02, 06, 00, 07, 87, 01, 02, 08, 00, 15, 49, 00, 16, 02, 06, 82, 01, 02, 0f, 00, 1c, 7e, 01, 0c, 00, 19, 7a, 00, 1d, 00, 2a, 76, 00, 2e, 00, 3c, a7, 01, 00, 3d, 02, 0a, 59, 02, 0a, 00, 0b, a3, 01, 01, 09, 00, 17, 31, 02, 09, 00, 0f, 9f, 01, 03, 08, 00, 0c, 5d, 01, 0d, 01, 10, 61, 01, 11, 02, 0a, 00, 02, 0a, 00, 0b, e7, 01, 02, 0c, 00, 19, 65, 00, 1a, 02, 0a, e2, 01, 03, 11, 00, 1e, de, 01, 01, 10, 00, 1d, da, 01, 00, 21, 00, 2e, d6, 01, 00, 32, 00, 40, 8b, 02, 00, 41, 02, 0e, 75, 02, 0e, 00, 0f, 87, 02, 01, 0d, 00, 1b, 2d, 02, 0d, 00, 13, 00, 02, 06, 00, 07, ff, 01, 02, 09, 01, 0c, 79, 01, 0d, 02, 06, 00, 02, 06, 00, 07, ef, 03, 02, 09, 00, 0a, db, 02, 00, 10, 00, 1d, 7d, 00, 1e, 02, 06, d6, 02, 02, 0f, 00, 1c, d2, 02, 01, 0c, 00, 19, ce, 02, 00, 1d, 00, 2a, ca, 02, 00, 2e, 00, 3c, f7, 03, 00, 3d, 02, 0a, 8d, 01, 02, 0a, 00, 0b, f3, 03, 01, 09, 00, 17, 29, 02, 0d, 02, 0f, 97, 04, 05, 09, 00, 0a, 83, 03, 00, 10, 00, 1d, 11, 00, 1e, 02, 06, ea, 03, 02, 0f, 00, 1c, e6, 03, 01, 0c, 00, 19, e2, 03, 00, 1d, 00, 2a, de, 03, 00, 2e, 00, 3c, 9f, 04, 00, 3d, 02, 0a, 21, 02, 0a, 00, 0b, 9b, 04, 01, 09, 00, 17, 25, 02, 09, 00, 0f, 93, 04, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 144
+- expression 0 operands: lhs = Counter(2), rhs = Expression(12, Add)
+- expression 1 operands: lhs = Expression(13, Add), rhs = Counter(16)
+- expression 2 operands: lhs = Expression(14, Add), rhs = Counter(15)
+- expression 3 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 4 operands: lhs = Counter(1), rhs = Zero
+- expression 5 operands: lhs = Expression(143, Add), rhs = Counter(2)
+- expression 6 operands: lhs = Counter(1), rhs = Zero
+- expression 7 operands: lhs = Counter(3), rhs = Counter(13)
+- expression 8 operands: lhs = Expression(9, Sub), rhs = Counter(14)
+- expression 9 operands: lhs = Counter(3), rhs = Counter(13)
+- expression 10 operands: lhs = Expression(14, Add), rhs = Counter(15)
+- expression 11 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 12 operands: lhs = Expression(13, Add), rhs = Counter(16)
+- expression 13 operands: lhs = Expression(14, Add), rhs = Counter(15)
+- expression 14 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 15 operands: lhs = Expression(142, Sub), rhs = Counter(3)
+- expression 16 operands: lhs = Expression(143, Add), rhs = Counter(2)
+- expression 17 operands: lhs = Counter(1), rhs = Zero
+- expression 18 operands: lhs = Expression(0, Add), rhs = Zero
+- expression 19 operands: lhs = Counter(17), rhs = Zero
+- expression 20 operands: lhs = Expression(33, Add), rhs = Counter(18)
+- expression 21 operands: lhs = Counter(17), rhs = Zero
+- expression 22 operands: lhs = Expression(32, Sub), rhs = Counter(12)
+- expression 23 operands: lhs = Expression(33, Add), rhs = Counter(18)
+- expression 24 operands: lhs = Counter(17), rhs = Zero
+- expression 25 operands: lhs = Expression(31, Sub), rhs = Counter(19)
+- expression 26 operands: lhs = Expression(32, Sub), rhs = Counter(12)
+- expression 27 operands: lhs = Expression(33, Add), rhs = Counter(18)
+- expression 28 operands: lhs = Counter(17), rhs = Zero
+- expression 29 operands: lhs = Expression(30, Sub), rhs = Counter(20)
+- expression 30 operands: lhs = Expression(31, Sub), rhs = Counter(19)
+- expression 31 operands: lhs = Expression(32, Sub), rhs = Counter(12)
+- expression 32 operands: lhs = Expression(33, Add), rhs = Counter(18)
+- expression 33 operands: lhs = Counter(17), rhs = Zero
+- expression 34 operands: lhs = Expression(42, Add), rhs = Counter(21)
+- expression 35 operands: lhs = Counter(19), rhs = Counter(20)
+- expression 36 operands: lhs = Expression(41, Add), rhs = Counter(22)
+- expression 37 operands: lhs = Expression(42, Add), rhs = Counter(21)
+- expression 38 operands: lhs = Counter(19), rhs = Counter(20)
+- expression 39 operands: lhs = Counter(18), rhs = Expression(40, Add)
+- expression 40 operands: lhs = Expression(41, Add), rhs = Counter(22)
+- expression 41 operands: lhs = Expression(42, Add), rhs = Counter(21)
+- expression 42 operands: lhs = Counter(19), rhs = Counter(20)
+- expression 43 operands: lhs = Counter(24), rhs = Zero
+- expression 44 operands: lhs = Expression(57, Add), rhs = Counter(25)
+- expression 45 operands: lhs = Counter(24), rhs = Zero
+- expression 46 operands: lhs = Expression(56, Sub), rhs = Counter(11)
+- expression 47 operands: lhs = Expression(57, Add), rhs = Counter(25)
+- expression 48 operands: lhs = Counter(24), rhs = Zero
+- expression 49 operands: lhs = Expression(55, Sub), rhs = Counter(26)
+- expression 50 operands: lhs = Expression(56, Sub), rhs = Counter(11)
+- expression 51 operands: lhs = Expression(57, Add), rhs = Counter(25)
+- expression 52 operands: lhs = Counter(24), rhs = Zero
+- expression 53 operands: lhs = Expression(54, Sub), rhs = Counter(27)
+- expression 54 operands: lhs = Expression(55, Sub), rhs = Counter(26)
+- expression 55 operands: lhs = Expression(56, Sub), rhs = Counter(11)
+- expression 56 operands: lhs = Expression(57, Add), rhs = Counter(25)
+- expression 57 operands: lhs = Counter(24), rhs = Zero
+- expression 58 operands: lhs = Expression(67, Add), rhs = Counter(28)
+- expression 59 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 60 operands: lhs = Expression(66, Add), rhs = Counter(29)
+- expression 61 operands: lhs = Expression(67, Add), rhs = Counter(28)
+- expression 62 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 63 operands: lhs = Expression(64, Add), rhs = Zero
+- expression 64 operands: lhs = Counter(25), rhs = Expression(65, Add)
+- expression 65 operands: lhs = Expression(66, Add), rhs = Counter(29)
+- expression 66 operands: lhs = Expression(67, Add), rhs = Counter(28)
+- expression 67 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 68 operands: lhs = Counter(31), rhs = Expression(124, Add)
+- expression 69 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 70 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 71 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 72 operands: lhs = Counter(30), rhs = Zero
+- expression 73 operands: lhs = Expression(86, Add), rhs = Counter(31)
+- expression 74 operands: lhs = Counter(30), rhs = Zero
+- expression 75 operands: lhs = Expression(85, Sub), rhs = Counter(10)
+- expression 76 operands: lhs = Expression(86, Add), rhs = Counter(31)
+- expression 77 operands: lhs = Counter(30), rhs = Zero
+- expression 78 operands: lhs = Expression(84, Sub), rhs = Counter(32)
+- expression 79 operands: lhs = Expression(85, Sub), rhs = Counter(10)
+- expression 80 operands: lhs = Expression(86, Add), rhs = Counter(31)
+- expression 81 operands: lhs = Counter(30), rhs = Zero
+- expression 82 operands: lhs = Expression(83, Sub), rhs = Counter(33)
+- expression 83 operands: lhs = Expression(84, Sub), rhs = Counter(32)
+- expression 84 operands: lhs = Expression(85, Sub), rhs = Counter(10)
+- expression 85 operands: lhs = Expression(86, Add), rhs = Counter(31)
+- expression 86 operands: lhs = Counter(30), rhs = Zero
+- expression 87 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 88 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 89 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 90 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 91 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 92 operands: lhs = Counter(4), rhs = Expression(134, Add)
+- expression 93 operands: lhs = Expression(135, Add), rhs = Counter(8)
+- expression 94 operands: lhs = Expression(136, Add), rhs = Counter(7)
+- expression 95 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 96 operands: lhs = Expression(123, Add), rhs = Zero
+- expression 97 operands: lhs = Counter(31), rhs = Expression(124, Add)
+- expression 98 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 99 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 100 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 101 operands: lhs = Expression(123, Add), rhs = Counter(4)
+- expression 102 operands: lhs = Counter(31), rhs = Expression(124, Add)
+- expression 103 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 104 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 105 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 106 operands: lhs = Expression(122, Sub), rhs = Counter(9)
+- expression 107 operands: lhs = Expression(123, Add), rhs = Counter(4)
+- expression 108 operands: lhs = Counter(31), rhs = Expression(124, Add)
+- expression 109 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 110 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 111 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 112 operands: lhs = Expression(121, Sub), rhs = Counter(5)
+- expression 113 operands: lhs = Expression(122, Sub), rhs = Counter(9)
+- expression 114 operands: lhs = Expression(123, Add), rhs = Counter(4)
+- expression 115 operands: lhs = Counter(31), rhs = Expression(124, Add)
+- expression 116 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 117 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 118 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 119 operands: lhs = Expression(120, Sub), rhs = Counter(6)
+- expression 120 operands: lhs = Expression(121, Sub), rhs = Counter(5)
+- expression 121 operands: lhs = Expression(122, Sub), rhs = Counter(9)
+- expression 122 operands: lhs = Expression(123, Add), rhs = Counter(4)
+- expression 123 operands: lhs = Counter(31), rhs = Expression(124, Add)
+- expression 124 operands: lhs = Expression(125, Add), rhs = Counter(35)
+- expression 125 operands: lhs = Expression(126, Add), rhs = Counter(34)
+- expression 126 operands: lhs = Counter(32), rhs = Counter(33)
+- expression 127 operands: lhs = Expression(136, Add), rhs = Counter(7)
+- expression 128 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 129 operands: lhs = Expression(135, Add), rhs = Counter(8)
+- expression 130 operands: lhs = Expression(136, Add), rhs = Counter(7)
+- expression 131 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 132 operands: lhs = Expression(133, Add), rhs = Expression(137, Add)
+- expression 133 operands: lhs = Counter(4), rhs = Expression(134, Add)
+- expression 134 operands: lhs = Expression(135, Add), rhs = Counter(8)
+- expression 135 operands: lhs = Expression(136, Add), rhs = Counter(7)
+- expression 136 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 137 operands: lhs = Expression(138, Add), rhs = Expression(141, Sub)
+- expression 138 operands: lhs = Expression(139, Add), rhs = Expression(140, Add)
+- expression 139 operands: lhs = Counter(9), rhs = Counter(10)
+- expression 140 operands: lhs = Counter(11), rhs = Counter(12)
+- expression 141 operands: lhs = Expression(142, Sub), rhs = Counter(3)
+- expression 142 operands: lhs = Expression(143, Add), rhs = Counter(2)
+- expression 143 operands: lhs = Counter(1), rhs = Zero
+Number of file 0 mappings: 68
+- Code(Counter(0)) at (prev + 3, 1) to (start + 2, 12)
+- Code(Counter(1)) at (prev + 2, 13) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(0, Add)) at (prev + 3, 9) to (start + 0, 10)
+    = (c2 + (((c13 + c14) + c15) + c16))
+- Code(Expression(143, Add)) at (prev + 0, 16) to (start + 0, 29)
+    = (c1 + Zero)
+- Code(Counter(2)) at (prev + 1, 9) to (start + 1, 10)
+- Code(Expression(142, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = ((c1 + Zero) - c2)
+- Code(Counter(3)) at (prev + 1, 12) to (start + 0, 25)
+- Code(Expression(9, Sub)) at (prev + 0, 29) to (start + 0, 42)
+    = (c3 - c13)
+- Code(Expression(8, Sub)) at (prev + 0, 46) to (start + 0, 60)
+    = ((c3 - c13) - c14)
+- Code(Expression(13, Add)) at (prev + 0, 61) to (start + 2, 10)
+    = ((c13 + c14) + c15)
+- Code(Counter(16)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(12, Add)) at (prev + 1, 9) to (start + 1, 18)
+    = (((c13 + c14) + c15) + c16)
+- Code(Expression(141, Sub)) at (prev + 3, 9) to (start + 0, 15)
+    = (((c1 + Zero) - c2) - c3)
+- Code(Expression(18, Add)) at (prev + 3, 9) to (start + 1, 12)
+    = ((c2 + (((c13 + c14) + c15) + c16)) + Zero)
+- Code(Counter(17)) at (prev + 1, 13) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(33, Add)) at (prev + 2, 8) to (start + 0, 21)
+    = (c17 + Zero)
+- Code(Counter(18)) at (prev + 0, 22) to (start + 2, 6)
+- Code(Expression(32, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = ((c17 + Zero) - c18)
+- Code(Expression(31, Sub)) at (prev + 1, 12) to (start + 0, 25)
+    = (((c17 + Zero) - c18) - c12)
+- Code(Expression(30, Sub)) at (prev + 0, 29) to (start + 0, 42)
+    = ((((c17 + Zero) - c18) - c12) - c19)
+- Code(Expression(29, Sub)) at (prev + 0, 46) to (start + 0, 60)
+    = (((((c17 + Zero) - c18) - c12) - c19) - c20)
+- Code(Expression(41, Add)) at (prev + 0, 61) to (start + 2, 10)
+    = ((c19 + c20) + c21)
+- Code(Counter(22)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(40, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (((c19 + c20) + c21) + c22)
+- Code(Counter(12)) at (prev + 2, 9) to (start + 0, 15)
+- Code(Expression(39, Add)) at (prev + 3, 8) to (start + 0, 12)
+    = (c18 + (((c19 + c20) + c21) + c22))
+- Code(Counter(23)) at (prev + 1, 13) to (start + 1, 16)
+- Code(Counter(24)) at (prev + 1, 17) to (start + 2, 10)
+- Code(Zero) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(57, Add)) at (prev + 2, 12) to (start + 0, 25)
+    = (c24 + Zero)
+- Code(Counter(25)) at (prev + 0, 26) to (start + 2, 10)
+- Code(Expression(56, Sub)) at (prev + 3, 17) to (start + 0, 30)
+    = ((c24 + Zero) - c25)
+- Code(Expression(55, Sub)) at (prev + 1, 16) to (start + 0, 29)
+    = (((c24 + Zero) - c25) - c11)
+- Code(Expression(54, Sub)) at (prev + 0, 33) to (start + 0, 46)
+    = ((((c24 + Zero) - c25) - c11) - c26)
+- Code(Expression(53, Sub)) at (prev + 0, 50) to (start + 0, 64)
+    = (((((c24 + Zero) - c25) - c11) - c26) - c27)
+- Code(Expression(66, Add)) at (prev + 0, 65) to (start + 2, 14)
+    = ((c26 + c27) + c28)
+- Code(Counter(29)) at (prev + 2, 14) to (start + 0, 15)
+- Code(Expression(65, Add)) at (prev + 1, 13) to (start + 0, 27)
+    = (((c26 + c27) + c28) + c29)
+- Code(Counter(11)) at (prev + 2, 13) to (start + 0, 19)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(63, Add)) at (prev + 2, 9) to (start + 1, 12)
+    = ((c25 + (((c26 + c27) + c28) + c29)) + Zero)
+- Code(Counter(30)) at (prev + 1, 13) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(123, Add)) at (prev + 2, 9) to (start + 0, 10)
+    = (c31 + (((c32 + c33) + c34) + c35))
+- Code(Expression(86, Add)) at (prev + 0, 16) to (start + 0, 29)
+    = (c30 + Zero)
+- Code(Counter(31)) at (prev + 0, 30) to (start + 2, 6)
+- Code(Expression(85, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = ((c30 + Zero) - c31)
+- Code(Expression(84, Sub)) at (prev + 1, 12) to (start + 0, 25)
+    = (((c30 + Zero) - c31) - c10)
+- Code(Expression(83, Sub)) at (prev + 0, 29) to (start + 0, 42)
+    = ((((c30 + Zero) - c31) - c10) - c32)
+- Code(Expression(82, Sub)) at (prev + 0, 46) to (start + 0, 60)
+    = (((((c30 + Zero) - c31) - c10) - c32) - c33)
+- Code(Expression(125, Add)) at (prev + 0, 61) to (start + 2, 10)
+    = ((c32 + c33) + c34)
+- Code(Counter(35)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(124, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (((c32 + c33) + c34) + c35)
+- Code(Counter(10)) at (prev + 2, 13) to (start + 2, 15)
+- Code(Expression(133, Add)) at (prev + 5, 9) to (start + 0, 10)
+    = (c4 + (((c5 + c6) + c7) + c8))
+- Code(Expression(96, Add)) at (prev + 0, 16) to (start + 0, 29)
+    = ((c31 + (((c32 + c33) + c34) + c35)) + Zero)
+- Code(Counter(4)) at (prev + 0, 30) to (start + 2, 6)
+- Code(Expression(122, Sub)) at (prev + 2, 15) to (start + 0, 28)
+    = ((c31 + (((c32 + c33) + c34) + c35)) - c4)
+- Code(Expression(121, Sub)) at (prev + 1, 12) to (start + 0, 25)
+    = (((c31 + (((c32 + c33) + c34) + c35)) - c4) - c9)
+- Code(Expression(120, Sub)) at (prev + 0, 29) to (start + 0, 42)
+    = ((((c31 + (((c32 + c33) + c34) + c35)) - c4) - c9) - c5)
+- Code(Expression(119, Sub)) at (prev + 0, 46) to (start + 0, 60)
+    = (((((c31 + (((c32 + c33) + c34) + c35)) - c4) - c9) - c5) - c6)
+- Code(Expression(135, Add)) at (prev + 0, 61) to (start + 2, 10)
+    = ((c5 + c6) + c7)
+- Code(Counter(8)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(134, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (((c5 + c6) + c7) + c8)
+- Code(Counter(9)) at (prev + 2, 9) to (start + 0, 15)
+- Code(Expression(132, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = ((c4 + (((c5 + c6) + c7) + c8)) + (((c9 + c10) + (c11 + c12)) + (((c1 + Zero) - c2) - c3)))
+
diff --git a/tests/coverage-map/status-quo/conditions.rs b/tests/coverage-map/status-quo/conditions.rs
new file mode 100644
index 00000000000..fa7f2a116c2
--- /dev/null
+++ b/tests/coverage-map/status-quo/conditions.rs
@@ -0,0 +1,86 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    let mut countdown = 0;
+    if true {
+        countdown = 10;
+    }
+
+    const B: u32 = 100;
+    let x = if countdown > 7 {
+        countdown -= 4;
+        B
+    } else if countdown > 2 {
+        if countdown < 1 || countdown > 5 || countdown != 9 {
+            countdown = 0;
+        }
+        countdown -= 5;
+        countdown
+    } else {
+        return;
+    };
+
+    let mut countdown = 0;
+    if true {
+        countdown = 10;
+    }
+
+    if countdown > 7 {
+        countdown -= 4;
+    } else if countdown > 2 {
+        if countdown < 1 || countdown > 5 || countdown != 9 {
+            countdown = 0;
+        }
+        countdown -= 5;
+    } else {
+        return;
+    }
+
+    if true {
+        let mut countdown = 0;
+        if true {
+            countdown = 10;
+        }
+
+        if countdown > 7 {
+            countdown -= 4;
+        }
+        else if countdown > 2 {
+            if countdown < 1 || countdown > 5 || countdown != 9 {
+                countdown = 0;
+            }
+            countdown -= 5;
+        } else {
+            return;
+        }
+    }
+
+    let mut countdown = 0;
+    if true {
+        countdown = 1;
+    }
+
+    let z = if countdown > 7 {
+        countdown -= 4;
+    } else if countdown > 2 {
+        if countdown < 1 || countdown > 5 || countdown != 9 {
+            countdown = 0;
+        }
+        countdown -= 5;
+    } else {
+        let should_be_reachable = countdown;
+        println!("reached");
+        return;
+    };
+
+    let w = if countdown > 7 {
+        countdown -= 4;
+    } else if countdown > 2 {
+        if countdown < 1 || countdown > 5 || countdown != 9 {
+            countdown = 0;
+        }
+        countdown -= 5;
+    } else {
+        return;
+    };
+}
diff --git a/tests/coverage-map/status-quo/continue.cov-map b/tests/coverage-map/status-quo/continue.cov-map
new file mode 100644
index 00000000000..c78cf293079
--- /dev/null
+++ b/tests/coverage-map/status-quo/continue.cov-map
@@ -0,0 +1,85 @@
+Function name: continue::main
+Raw bytes (216): 0x[01, 01, 1f, 01, 07, 05, 09, 03, 0d, 0d, 1f, 11, 15, 1b, 19, 0d, 1f, 11, 15, 15, 00, 19, 37, 1d, 21, 33, 25, 19, 37, 1d, 21, 1d, 00, 25, 4f, 29, 2d, 4b, 31, 25, 4f, 29, 2d, 31, 67, 35, 39, 5f, 3d, 31, 67, 35, 39, 35, 39, 3d, 41, 73, 45, 3d, 41, 41, 00, 49, 45, 1e, 01, 03, 01, 03, 12, 03, 04, 0e, 00, 13, 0a, 01, 0f, 00, 16, 05, 02, 11, 00, 19, 09, 02, 12, 04, 0e, 1b, 06, 0e, 00, 13, 16, 01, 0f, 00, 16, 15, 01, 16, 02, 0e, 11, 04, 11, 00, 19, 23, 03, 09, 00, 0e, 33, 02, 0e, 00, 13, 2e, 01, 0f, 00, 16, 1d, 01, 15, 02, 0e, 21, 04, 11, 00, 19, 3b, 03, 09, 00, 0e, 4b, 02, 0e, 00, 13, 46, 01, 0c, 00, 13, 29, 01, 0d, 00, 15, 2d, 01, 0a, 01, 0e, 5f, 03, 0e, 00, 13, 5a, 01, 0f, 00, 16, 39, 01, 16, 02, 0e, 35, 03, 12, 02, 0e, 67, 04, 09, 00, 0e, 73, 02, 0e, 00, 13, 6e, 01, 0f, 00, 16, 41, 01, 16, 02, 0e, 49, 04, 11, 00, 16, 77, 03, 09, 00, 0e, 7b, 02, 0d, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 31
+- expression 0 operands: lhs = Counter(0), rhs = Expression(1, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(3), rhs = Expression(7, Add)
+- expression 4 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 5 operands: lhs = Expression(6, Add), rhs = Counter(6)
+- expression 6 operands: lhs = Counter(3), rhs = Expression(7, Add)
+- expression 7 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 8 operands: lhs = Counter(5), rhs = Zero
+- expression 9 operands: lhs = Counter(6), rhs = Expression(13, Add)
+- expression 10 operands: lhs = Counter(7), rhs = Counter(8)
+- expression 11 operands: lhs = Expression(12, Add), rhs = Counter(9)
+- expression 12 operands: lhs = Counter(6), rhs = Expression(13, Add)
+- expression 13 operands: lhs = Counter(7), rhs = Counter(8)
+- expression 14 operands: lhs = Counter(7), rhs = Zero
+- expression 15 operands: lhs = Counter(9), rhs = Expression(19, Add)
+- expression 16 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 17 operands: lhs = Expression(18, Add), rhs = Counter(12)
+- expression 18 operands: lhs = Counter(9), rhs = Expression(19, Add)
+- expression 19 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 20 operands: lhs = Counter(12), rhs = Expression(25, Add)
+- expression 21 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 22 operands: lhs = Expression(23, Add), rhs = Counter(15)
+- expression 23 operands: lhs = Counter(12), rhs = Expression(25, Add)
+- expression 24 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 25 operands: lhs = Counter(13), rhs = Counter(14)
+- expression 26 operands: lhs = Counter(15), rhs = Counter(16)
+- expression 27 operands: lhs = Expression(28, Add), rhs = Counter(17)
+- expression 28 operands: lhs = Counter(15), rhs = Counter(16)
+- expression 29 operands: lhs = Counter(16), rhs = Zero
+- expression 30 operands: lhs = Counter(18), rhs = Counter(17)
+Number of file 0 mappings: 30
+- Code(Counter(0)) at (prev + 3, 1) to (start + 3, 18)
+- Code(Expression(0, Add)) at (prev + 4, 14) to (start + 0, 19)
+    = (c0 + (c1 + c2))
+- Code(Expression(2, Sub)) at (prev + 1, 15) to (start + 0, 22)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Counter(1)) at (prev + 2, 17) to (start + 0, 25)
+- Code(Counter(2)) at (prev + 2, 18) to (start + 4, 14)
+- Code(Expression(6, Add)) at (prev + 6, 14) to (start + 0, 19)
+    = (c3 + (c4 + c5))
+- Code(Expression(5, Sub)) at (prev + 1, 15) to (start + 0, 22)
+    = ((c3 + (c4 + c5)) - c6)
+- Code(Counter(5)) at (prev + 1, 22) to (start + 2, 14)
+- Code(Counter(4)) at (prev + 4, 17) to (start + 0, 25)
+- Code(Expression(8, Add)) at (prev + 3, 9) to (start + 0, 14)
+    = (c5 + Zero)
+- Code(Expression(12, Add)) at (prev + 2, 14) to (start + 0, 19)
+    = (c6 + (c7 + c8))
+- Code(Expression(11, Sub)) at (prev + 1, 15) to (start + 0, 22)
+    = ((c6 + (c7 + c8)) - c9)
+- Code(Counter(7)) at (prev + 1, 21) to (start + 2, 14)
+- Code(Counter(8)) at (prev + 4, 17) to (start + 0, 25)
+- Code(Expression(14, Add)) at (prev + 3, 9) to (start + 0, 14)
+    = (c7 + Zero)
+- Code(Expression(18, Add)) at (prev + 2, 14) to (start + 0, 19)
+    = (c9 + (c10 + c11))
+- Code(Expression(17, Sub)) at (prev + 1, 12) to (start + 0, 19)
+    = ((c9 + (c10 + c11)) - c12)
+- Code(Counter(10)) at (prev + 1, 13) to (start + 0, 21)
+- Code(Counter(11)) at (prev + 1, 10) to (start + 1, 14)
+- Code(Expression(23, Add)) at (prev + 3, 14) to (start + 0, 19)
+    = (c12 + (c13 + c14))
+- Code(Expression(22, Sub)) at (prev + 1, 15) to (start + 0, 22)
+    = ((c12 + (c13 + c14)) - c15)
+- Code(Counter(14)) at (prev + 1, 22) to (start + 2, 14)
+- Code(Counter(13)) at (prev + 3, 18) to (start + 2, 14)
+- Code(Expression(25, Add)) at (prev + 4, 9) to (start + 0, 14)
+    = (c13 + c14)
+- Code(Expression(28, Add)) at (prev + 2, 14) to (start + 0, 19)
+    = (c15 + c16)
+- Code(Expression(27, Sub)) at (prev + 1, 15) to (start + 0, 22)
+    = ((c15 + c16) - c17)
+- Code(Counter(16)) at (prev + 1, 22) to (start + 2, 14)
+- Code(Counter(18)) at (prev + 4, 17) to (start + 0, 22)
+- Code(Expression(29, Add)) at (prev + 3, 9) to (start + 0, 14)
+    = (c16 + Zero)
+- Code(Expression(30, Add)) at (prev + 2, 13) to (start + 1, 2)
+    = (c18 + c17)
+
diff --git a/tests/coverage-map/status-quo/continue.rs b/tests/coverage-map/status-quo/continue.rs
new file mode 100644
index 00000000000..624aa98341b
--- /dev/null
+++ b/tests/coverage-map/status-quo/continue.rs
@@ -0,0 +1,69 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    let is_true = std::env::args().len() == 1;
+
+    let mut x = 0;
+    for _ in 0..10 {
+        match is_true {
+            true => {
+                continue;
+            }
+            _ => {
+                x = 1;
+            }
+        }
+        x = 3;
+    }
+    for _ in 0..10 {
+        match is_true {
+            false => {
+                x = 1;
+            }
+            _ => {
+                continue;
+            }
+        }
+        x = 3;
+    }
+    for _ in 0..10 {
+        match is_true {
+            true => {
+                x = 1;
+            }
+            _ => {
+                continue;
+            }
+        }
+        x = 3;
+    }
+    for _ in 0..10 {
+        if is_true {
+            continue;
+        }
+        x = 3;
+    }
+    for _ in 0..10 {
+        match is_true {
+            false => {
+                x = 1;
+            }
+            _ => {
+                let _ = x;
+            }
+        }
+        x = 3;
+    }
+    for _ in 0..10 {
+        match is_true {
+            false => {
+                x = 1;
+            }
+            _ => {
+                break;
+            }
+        }
+        x = 3;
+    }
+    let _ = x;
+}
diff --git a/tests/coverage-map/status-quo/dead_code.cov-map b/tests/coverage-map/status-quo/dead_code.cov-map
new file mode 100644
index 00000000000..8d5f88e63ef
--- /dev/null
+++ b/tests/coverage-map/status-quo/dead_code.cov-map
@@ -0,0 +1,37 @@
+Function name: dead_code::main
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 1b, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 27, 1) to (start + 7, 15)
+- Code(Counter(1)) at (prev + 7, 16) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: dead_code::unused_fn (unused)
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 0f, 01, 07, 0f, 00, 07, 10, 02, 06, 00, 02, 06, 00, 07, 00, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 15, 1) to (start + 7, 15)
+- Code(Zero) at (prev + 7, 16) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Zero) at (prev + 1, 1) to (start + 0, 2)
+
+Function name: dead_code::unused_pub_fn_not_in_library (unused)
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 03, 01, 07, 0f, 00, 07, 10, 02, 06, 00, 02, 06, 00, 07, 00, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 3, 1) to (start + 7, 15)
+- Code(Zero) at (prev + 7, 16) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Zero) at (prev + 1, 1) to (start + 0, 2)
+
diff --git a/tests/coverage-map/status-quo/dead_code.rs b/tests/coverage-map/status-quo/dead_code.rs
new file mode 100644
index 00000000000..3492712a6f9
--- /dev/null
+++ b/tests/coverage-map/status-quo/dead_code.rs
@@ -0,0 +1,37 @@
+#![allow(dead_code, unused_assignments, unused_variables)]
+
+pub fn unused_pub_fn_not_in_library() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 0;
+    if is_true {
+        countdown = 10;
+    }
+}
+
+fn unused_fn() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 0;
+    if is_true {
+        countdown = 10;
+    }
+}
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 0;
+    if is_true {
+        countdown = 10;
+    }
+}
diff --git a/tests/coverage-map/status-quo/drop_trait.cov-map b/tests/coverage-map/status-quo/drop_trait.cov-map
new file mode 100644
index 00000000000..203d1048b05
--- /dev/null
+++ b/tests/coverage-map/status-quo/drop_trait.cov-map
@@ -0,0 +1,21 @@
+Function name: <drop_trait::Firework as core::ops::drop::Drop>::drop
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 09, 05, 02, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 9, 5) to (start + 2, 6)
+
+Function name: drop_trait::main
+Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 0e, 01, 05, 0c, 05, 06, 09, 01, 16, 00, 02, 06, 04, 0b, 03, 05, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 14, 1) to (start + 5, 12)
+- Code(Counter(1)) at (prev + 6, 9) to (start + 1, 22)
+- Code(Zero) at (prev + 2, 6) to (start + 4, 11)
+- Code(Expression(0, Add)) at (prev + 5, 1) to (start + 0, 2)
+    = (c1 + Zero)
+
diff --git a/tests/coverage-map/status-quo/drop_trait.rs b/tests/coverage-map/status-quo/drop_trait.rs
new file mode 100644
index 00000000000..7b062719c6b
--- /dev/null
+++ b/tests/coverage-map/status-quo/drop_trait.rs
@@ -0,0 +1,33 @@
+#![allow(unused_assignments)]
+// failure-status: 1
+
+struct Firework {
+    strength: i32,
+}
+
+impl Drop for Firework {
+    fn drop(&mut self) {
+        println!("BOOM times {}!!!", self.strength);
+    }
+}
+
+fn main() -> Result<(), u8> {
+    let _firecracker = Firework { strength: 1 };
+
+    let _tnt = Firework { strength: 100 };
+
+    if true {
+        println!("Exiting with error...");
+        return Err(1);
+    }
+
+    let _ = Firework { strength: 1000 };
+
+    Ok(())
+}
+
+// Expected program output:
+//   Exiting with error...
+//   BOOM times 100!!!
+//   BOOM times 1!!!
+//   Error: 1
diff --git a/tests/coverage-map/status-quo/generator.cov-map b/tests/coverage-map/status-quo/generator.cov-map
new file mode 100644
index 00000000000..6e10b58a941
--- /dev/null
+++ b/tests/coverage-map/status-quo/generator.cov-map
@@ -0,0 +1,58 @@
+Function name: generator::get_u32
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 0b, 01, 01, 0b, 05, 01, 0e, 00, 13, 02, 00, 1d, 00, 3c, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 11, 1) to (start + 1, 11)
+- Code(Counter(1)) at (prev + 1, 14) to (start + 0, 19)
+- Code(Expression(0, Sub)) at (prev + 0, 29) to (start + 0, 60)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: generator::main
+Raw bytes (71): 0x[01, 01, 0b, 01, 00, 05, 0b, 09, 0d, 11, 00, 11, 15, 2a, 19, 11, 15, 15, 19, 26, 00, 2a, 19, 11, 15, 09, 01, 0f, 01, 02, 19, 03, 07, 0b, 00, 2e, 11, 01, 2b, 00, 2d, 07, 01, 0e, 00, 35, 0f, 02, 0b, 00, 2e, 2a, 01, 22, 00, 27, 26, 00, 2c, 00, 2e, 1f, 01, 0e, 00, 35, 23, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 11
+- expression 0 operands: lhs = Counter(0), rhs = Zero
+- expression 1 operands: lhs = Counter(1), rhs = Expression(2, Add)
+- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(4), rhs = Zero
+- expression 4 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 5 operands: lhs = Expression(10, Sub), rhs = Counter(6)
+- expression 6 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 7 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 8 operands: lhs = Expression(9, Sub), rhs = Zero
+- expression 9 operands: lhs = Expression(10, Sub), rhs = Counter(6)
+- expression 10 operands: lhs = Counter(4), rhs = Counter(5)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 15, 1) to (start + 2, 25)
+- Code(Expression(0, Add)) at (prev + 7, 11) to (start + 0, 46)
+    = (c0 + Zero)
+- Code(Counter(4)) at (prev + 1, 43) to (start + 0, 45)
+- Code(Expression(1, Add)) at (prev + 1, 14) to (start + 0, 53)
+    = (c1 + (c2 + c3))
+- Code(Expression(3, Add)) at (prev + 2, 11) to (start + 0, 46)
+    = (c4 + Zero)
+- Code(Expression(10, Sub)) at (prev + 1, 34) to (start + 0, 39)
+    = (c4 - c5)
+- Code(Expression(9, Sub)) at (prev + 0, 44) to (start + 0, 46)
+    = ((c4 - c5) - c6)
+- Code(Expression(7, Add)) at (prev + 1, 14) to (start + 0, 53)
+    = (c5 + c6)
+- Code(Expression(8, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (((c4 - c5) - c6) + Zero)
+
+Function name: generator::main::{closure#0}
+Raw bytes (14): 0x[01, 01, 00, 02, 01, 11, 1c, 01, 1f, 05, 02, 10, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 17, 28) to (start + 1, 31)
+- Code(Counter(1)) at (prev + 2, 16) to (start + 1, 6)
+
diff --git a/tests/coverage-map/status-quo/generator.rs b/tests/coverage-map/status-quo/generator.rs
new file mode 100644
index 00000000000..4319991021e
--- /dev/null
+++ b/tests/coverage-map/status-quo/generator.rs
@@ -0,0 +1,30 @@
+#![feature(generators, generator_trait)]
+
+use std::ops::{Generator, GeneratorState};
+use std::pin::Pin;
+
+// The following implementation of a function called from a `yield` statement
+// (apparently requiring the Result and the `String` type or constructor)
+// creates conditions where the `generator::StateTransform` MIR transform will
+// drop all `Counter` `Coverage` statements from a MIR. `simplify.rs` has logic
+// to handle this condition, and still report dead block coverage.
+fn get_u32(val: bool) -> Result<u32, String> {
+    if val { Ok(1) } else { Err(String::from("some error")) }
+}
+
+fn main() {
+    let is_true = std::env::args().len() == 1;
+    let mut generator = || {
+        yield get_u32(is_true);
+        return "foo";
+    };
+
+    match Pin::new(&mut generator).resume(()) {
+        GeneratorState::Yielded(Ok(1)) => {}
+        _ => panic!("unexpected return from resume"),
+    }
+    match Pin::new(&mut generator).resume(()) {
+        GeneratorState::Complete("foo") => {}
+        _ => panic!("unexpected return from resume"),
+    }
+}
diff --git a/tests/coverage-map/status-quo/generics.cov-map b/tests/coverage-map/status-quo/generics.cov-map
new file mode 100644
index 00000000000..6079a433cd0
--- /dev/null
+++ b/tests/coverage-map/status-quo/generics.cov-map
@@ -0,0 +1,45 @@
+Function name: <generics::Firework<f64> as core::ops::drop::Drop>::drop
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 11, 05, 02, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 17, 5) to (start + 2, 6)
+
+Function name: <generics::Firework<f64>>::set_strength
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0a, 05, 02, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 10, 5) to (start + 2, 6)
+
+Function name: <generics::Firework<i32> as core::ops::drop::Drop>::drop
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 11, 05, 02, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 17, 5) to (start + 2, 6)
+
+Function name: <generics::Firework<i32>>::set_strength
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0a, 05, 02, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 10, 5) to (start + 2, 6)
+
+Function name: generics::main
+Raw bytes (26): 0x[01, 01, 01, 05, 00, 04, 01, 16, 01, 08, 0c, 05, 09, 09, 01, 16, 00, 02, 06, 04, 0b, 03, 05, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(1), rhs = Zero
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 22, 1) to (start + 8, 12)
+- Code(Counter(1)) at (prev + 9, 9) to (start + 1, 22)
+- Code(Zero) at (prev + 2, 6) to (start + 4, 11)
+- Code(Expression(0, Add)) at (prev + 5, 1) to (start + 0, 2)
+    = (c1 + Zero)
+
diff --git a/tests/coverage-map/status-quo/generics.rs b/tests/coverage-map/status-quo/generics.rs
new file mode 100644
index 00000000000..bf4c2d8d685
--- /dev/null
+++ b/tests/coverage-map/status-quo/generics.rs
@@ -0,0 +1,44 @@
+#![allow(unused_assignments)]
+// failure-status: 1
+
+struct Firework<T> where T: Copy + std::fmt::Display {
+    strength: T,
+}
+
+impl<T> Firework<T> where T: Copy + std::fmt::Display {
+    #[inline(always)]
+    fn set_strength(&mut self, new_strength: T) {
+        self.strength = new_strength;
+    }
+}
+
+impl<T> Drop for Firework<T> where T: Copy + std::fmt::Display {
+    #[inline(always)]
+    fn drop(&mut self) {
+        println!("BOOM times {}!!!", self.strength);
+    }
+}
+
+fn main() -> Result<(), u8> {
+    let mut firecracker = Firework { strength: 1 };
+    firecracker.set_strength(2);
+
+    let mut tnt = Firework { strength: 100.1 };
+    tnt.set_strength(200.1);
+    tnt.set_strength(300.3);
+
+    if true {
+        println!("Exiting with error...");
+        return Err(1);
+    }
+
+    let _ = Firework { strength: 1000 };
+
+    Ok(())
+}
+
+// Expected program output:
+//   Exiting with error...
+//   BOOM times 100!!!
+//   BOOM times 1!!!
+//   Error: 1
diff --git a/tests/coverage-map/status-quo/if.cov-map b/tests/coverage-map/status-quo/if.cov-map
new file mode 100644
index 00000000000..391a69e0e82
--- /dev/null
+++ b/tests/coverage-map/status-quo/if.cov-map
@@ -0,0 +1,15 @@
+Function name: if::main
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 03, 01, 12, 10, 05, 13, 05, 05, 06, 02, 05, 06, 00, 07, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 3, 1) to (start + 18, 16)
+- Code(Counter(1)) at (prev + 19, 5) to (start + 5, 6)
+- Code(Expression(0, Sub)) at (prev + 5, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
diff --git a/tests/coverage-map/status-quo/if.rs b/tests/coverage-map/status-quo/if.rs
new file mode 100644
index 00000000000..8ad5042ff7b
--- /dev/null
+++ b/tests/coverage-map/status-quo/if.rs
@@ -0,0 +1,28 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let
+    is_true
+    =
+        std::env::args().len()
+    ==
+        1
+    ;
+    let
+        mut
+    countdown
+    =
+        0
+    ;
+    if
+        is_true
+    {
+        countdown
+        =
+            10
+        ;
+    }
+}
diff --git a/tests/coverage-map/status-quo/if_else.cov-map b/tests/coverage-map/status-quo/if_else.cov-map
new file mode 100644
index 00000000000..da692ca3aa2
--- /dev/null
+++ b/tests/coverage-map/status-quo/if_else.cov-map
@@ -0,0 +1,25 @@
+Function name: if_else::main
+Raw bytes (53): 0x[01, 01, 07, 01, 05, 05, 02, 1b, 09, 05, 02, 09, 16, 1b, 09, 05, 02, 07, 01, 03, 01, 08, 10, 05, 09, 05, 05, 06, 02, 08, 09, 02, 10, 1b, 06, 09, 00, 10, 09, 01, 05, 05, 06, 16, 07, 05, 05, 06, 13, 06, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 7
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 2 operands: lhs = Expression(6, Add), rhs = Counter(2)
+- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 4 operands: lhs = Counter(2), rhs = Expression(5, Sub)
+- expression 5 operands: lhs = Expression(6, Add), rhs = Counter(2)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 7
+- Code(Counter(0)) at (prev + 3, 1) to (start + 8, 16)
+- Code(Counter(1)) at (prev + 9, 5) to (start + 5, 6)
+- Code(Expression(0, Sub)) at (prev + 8, 9) to (start + 2, 16)
+    = (c0 - c1)
+- Code(Expression(6, Add)) at (prev + 6, 9) to (start + 0, 16)
+    = (c1 + (c0 - c1))
+- Code(Counter(2)) at (prev + 1, 5) to (start + 5, 6)
+- Code(Expression(5, Sub)) at (prev + 7, 5) to (start + 5, 6)
+    = ((c1 + (c0 - c1)) - c2)
+- Code(Expression(4, Add)) at (prev + 6, 1) to (start + 0, 2)
+    = (c2 + ((c1 + (c0 - c1)) - c2))
+
diff --git a/tests/coverage-map/status-quo/if_else.rs b/tests/coverage-map/status-quo/if_else.rs
new file mode 100644
index 00000000000..3244e1e3afd
--- /dev/null
+++ b/tests/coverage-map/status-quo/if_else.rs
@@ -0,0 +1,40 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 0;
+    if
+        is_true
+    {
+        countdown
+        =
+            10
+        ;
+    }
+    else // Note coverage region difference without semicolon
+    {
+        countdown
+        =
+            100
+    }
+
+    if
+        is_true
+    {
+        countdown
+        =
+            10
+        ;
+    }
+    else
+    {
+        countdown
+        =
+            100
+        ;
+    }
+}
diff --git a/tests/coverage-map/status-quo/inline-dead.cov-map b/tests/coverage-map/status-quo/inline-dead.cov-map
new file mode 100644
index 00000000000..dec43d3e8bb
--- /dev/null
+++ b/tests/coverage-map/status-quo/inline-dead.cov-map
@@ -0,0 +1,45 @@
+Function name: inline_dead::dead (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 19, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 25, 1) to (start + 2, 2)
+
+Function name: inline_dead::live::<false>
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 10, 01, 01, 09, 00, 02, 09, 00, 0f, 02, 02, 09, 00, 0a, 07, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 16, 1) to (start + 1, 9)
+- Code(Zero) at (prev + 2, 9) to (start + 0, 15)
+- Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 10)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: inline_dead::main
+Raw bytes (16): 0x[01, 01, 01, 01, 00, 02, 01, 04, 01, 03, 0d, 03, 07, 06, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Zero
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 4, 1) to (start + 3, 13)
+- Code(Expression(0, Add)) at (prev + 7, 6) to (start + 2, 2)
+    = (c0 + Zero)
+
+Function name: inline_dead::main::{closure#0}
+Raw bytes (16): 0x[01, 01, 01, 01, 05, 02, 00, 09, 0d, 00, 0e, 03, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 2
+- Code(Zero) at (prev + 9, 13) to (start + 0, 14)
+- Code(Expression(0, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (c0 + c1)
+
diff --git a/tests/coverage-map/status-quo/inline-dead.rs b/tests/coverage-map/status-quo/inline-dead.rs
new file mode 100644
index 00000000000..854fa062967
--- /dev/null
+++ b/tests/coverage-map/status-quo/inline-dead.rs
@@ -0,0 +1,27 @@
+// Regression test for issue #98833.
+// compile-flags: -Zinline-mir -Cdebug-assertions=off
+
+fn main() {
+    println!("{}", live::<false>());
+
+    let f = |x: bool| {
+        debug_assert!(
+            x
+        );
+    };
+    f(false);
+}
+
+#[inline]
+fn live<const B: bool>() -> u32 {
+    if B {
+        dead()
+    } else {
+        0
+    }
+}
+
+#[inline]
+fn dead() -> u32 {
+    42
+}
diff --git a/tests/coverage-map/status-quo/inline.cov-map b/tests/coverage-map/status-quo/inline.cov-map
new file mode 100644
index 00000000000..57ae85623fb
--- /dev/null
+++ b/tests/coverage-map/status-quo/inline.cov-map
@@ -0,0 +1,82 @@
+Function name: inline::display::<char>
+Raw bytes (35): 0x[01, 01, 03, 01, 05, 05, 00, 03, 05, 05, 01, 29, 01, 00, 22, 05, 01, 09, 00, 0a, 03, 00, 0e, 00, 10, 07, 00, 11, 02, 06, 0a, 03, 05, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 3
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Zero
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(1)
+Number of file 0 mappings: 5
+- Code(Counter(0)) at (prev + 41, 1) to (start + 0, 34)
+- Code(Counter(1)) at (prev + 1, 9) to (start + 0, 10)
+- Code(Expression(0, Add)) at (prev + 0, 14) to (start + 0, 16)
+    = (c0 + c1)
+- Code(Expression(1, Add)) at (prev + 0, 17) to (start + 2, 6)
+    = (c1 + Zero)
+- Code(Expression(2, Sub)) at (prev + 3, 5) to (start + 1, 2)
+    = ((c0 + c1) - c1)
+
+Function name: inline::error
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 31, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 49, 1) to (start + 2, 2)
+
+Function name: inline::length::<char>
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1e, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 30, 1) to (start + 2, 2)
+
+Function name: inline::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 05, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 5, 1) to (start + 2, 2)
+
+Function name: inline::permutate::<char>
+Raw bytes (54): 0x[01, 01, 05, 01, 05, 02, 0d, 11, 00, 05, 13, 09, 0d, 08, 01, 0f, 01, 02, 0e, 05, 02, 0f, 02, 06, 02, 02, 0f, 00, 14, 11, 01, 0d, 00, 0e, 06, 00, 12, 00, 16, 0b, 00, 17, 04, 0a, 0d, 05, 0c, 02, 06, 0f, 03, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 5
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(0, Sub), rhs = Counter(3)
+- expression 2 operands: lhs = Counter(4), rhs = Zero
+- expression 3 operands: lhs = Counter(1), rhs = Expression(4, Add)
+- expression 4 operands: lhs = Counter(2), rhs = Counter(3)
+Number of file 0 mappings: 8
+- Code(Counter(0)) at (prev + 15, 1) to (start + 2, 14)
+- Code(Counter(1)) at (prev + 2, 15) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 15) to (start + 0, 20)
+    = (c0 - c1)
+- Code(Counter(4)) at (prev + 1, 13) to (start + 0, 14)
+- Code(Expression(1, Sub)) at (prev + 0, 18) to (start + 0, 22)
+    = ((c0 - c1) - c3)
+- Code(Expression(2, Add)) at (prev + 0, 23) to (start + 4, 10)
+    = (c4 + Zero)
+- Code(Counter(3)) at (prev + 5, 12) to (start + 2, 6)
+- Code(Expression(3, Add)) at (prev + 3, 1) to (start + 0, 2)
+    = (c1 + (c2 + c3))
+
+Function name: inline::permutations::<char>
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0a, 01, 03, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 10, 1) to (start + 3, 2)
+
+Function name: inline::swap::<char>
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 23, 01, 04, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 35, 1) to (start + 4, 2)
+
diff --git a/tests/coverage-map/status-quo/inline.rs b/tests/coverage-map/status-quo/inline.rs
new file mode 100644
index 00000000000..9cfab9ddbad
--- /dev/null
+++ b/tests/coverage-map/status-quo/inline.rs
@@ -0,0 +1,51 @@
+// compile-flags: -Zinline-mir
+
+use std::fmt::Display;
+
+fn main() {
+    permutations(&['a', 'b', 'c']);
+}
+
+#[inline(always)]
+fn permutations<T: Copy + Display>(xs: &[T]) {
+    let mut ys = xs.to_owned();
+    permutate(&mut ys, 0);
+}
+
+fn permutate<T: Copy + Display>(xs: &mut [T], k: usize) {
+    let n = length(xs);
+    if k == n {
+        display(xs);
+    } else if k < n {
+        for i in k..n {
+            swap(xs, i, k);
+            permutate(xs, k + 1);
+            swap(xs, i, k);
+        }
+    } else {
+        error();
+    }
+}
+
+fn length<T>(xs: &[T]) -> usize {
+    xs.len()
+}
+
+#[inline]
+fn swap<T: Copy>(xs: &mut [T], i: usize, j: usize) {
+    let t = xs[i];
+    xs[i] = xs[j];
+    xs[j] = t;
+}
+
+fn display<T: Display>(xs: &[T]) {
+    for x in xs {
+        print!("{}", x);
+    }
+    println!();
+}
+
+#[inline(always)]
+fn error() {
+    panic!("error");
+}
diff --git a/tests/coverage-map/status-quo/inner_items.cov-map b/tests/coverage-map/status-quo/inner_items.cov-map
new file mode 100644
index 00000000000..3f39d74efba
--- /dev/null
+++ b/tests/coverage-map/status-quo/inner_items.cov-map
@@ -0,0 +1,49 @@
+Function name: <inner_items::main::InStruct as inner_items::main::InTrait>::default_trait_func
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 21, 09, 03, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 33, 9) to (start + 3, 10)
+
+Function name: <inner_items::main::InStruct as inner_items::main::InTrait>::trait_func
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 28, 09, 03, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 40, 9) to (start + 3, 10)
+
+Function name: inner_items::main
+Raw bytes (53): 0x[01, 01, 07, 01, 05, 05, 02, 1b, 09, 05, 02, 09, 16, 1b, 09, 05, 02, 07, 01, 03, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 1b, 24, 08, 00, 0f, 09, 00, 10, 02, 06, 16, 02, 06, 00, 07, 13, 02, 09, 05, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 7
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 2 operands: lhs = Expression(6, Add), rhs = Counter(2)
+- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 4 operands: lhs = Counter(2), rhs = Expression(5, Sub)
+- expression 5 operands: lhs = Expression(6, Add), rhs = Counter(2)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 7
+- Code(Counter(0)) at (prev + 3, 1) to (start + 7, 15)
+- Code(Counter(1)) at (prev + 7, 16) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(6, Add)) at (prev + 36, 8) to (start + 0, 15)
+    = (c1 + (c0 - c1))
+- Code(Counter(2)) at (prev + 0, 16) to (start + 2, 6)
+- Code(Expression(5, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = ((c1 + (c0 - c1)) - c2)
+- Code(Expression(4, Add)) at (prev + 2, 9) to (start + 5, 2)
+    = (c2 + ((c1 + (c0 - c1)) - c2))
+
+Function name: inner_items::main::in_func
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 12, 05, 04, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 18, 5) to (start + 4, 6)
+
diff --git a/tests/coverage-map/status-quo/inner_items.rs b/tests/coverage-map/status-quo/inner_items.rs
new file mode 100644
index 00000000000..bcb62b3031c
--- /dev/null
+++ b/tests/coverage-map/status-quo/inner_items.rs
@@ -0,0 +1,57 @@
+#![allow(unused_assignments, unused_variables, dead_code)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 0;
+    if is_true {
+        countdown = 10;
+    }
+
+    mod in_mod {
+        const IN_MOD_CONST: u32 = 1000;
+    }
+
+    fn in_func(a: u32) {
+        let b = 1;
+        let c = a + b;
+        println!("c = {}", c)
+    }
+
+    struct InStruct {
+        in_struct_field: u32,
+    }
+
+    const IN_CONST: u32 = 1234;
+
+    trait InTrait {
+        fn trait_func(&mut self, incr: u32);
+
+        fn default_trait_func(&mut self) {
+            in_func(IN_CONST);
+            self.trait_func(IN_CONST);
+        }
+    }
+
+    impl InTrait for InStruct {
+        fn trait_func(&mut self, incr: u32) {
+            self.in_struct_field += incr;
+            in_func(self.in_struct_field);
+        }
+    }
+
+    type InType = String;
+
+    if is_true {
+        in_func(countdown);
+    }
+
+    let mut val = InStruct {
+        in_struct_field: 101,
+    };
+
+    val.default_trait_func();
+}
diff --git a/tests/coverage-map/status-quo/issue-83601.cov-map b/tests/coverage-map/status-quo/issue-83601.cov-map
new file mode 100644
index 00000000000..f5db3a89750
--- /dev/null
+++ b/tests/coverage-map/status-quo/issue-83601.cov-map
@@ -0,0 +1,28 @@
+Function name: <issue_83601::Foo as core::cmp::PartialEq>::eq
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 03, 11, 00, 1a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 3, 17) to (start + 0, 26)
+
+Function name: <issue_83601::Foo as core::fmt::Debug>::fmt
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 03, 0a, 00, 0f]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 3, 10) to (start + 0, 15)
+
+Function name: issue_83601::main
+Raw bytes (21): 0x[01, 01, 01, 05, 09, 03, 01, 06, 01, 02, 1c, 05, 03, 09, 01, 1c, 02, 02, 05, 03, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
+Number of file 0 mappings: 3
+- Code(Counter(0)) at (prev + 6, 1) to (start + 2, 28)
+- Code(Counter(1)) at (prev + 3, 9) to (start + 1, 28)
+- Code(Expression(0, Sub)) at (prev + 2, 5) to (start + 3, 2)
+    = (c1 - c2)
+
diff --git a/tests/coverage-map/status-quo/issue-83601.rs b/tests/coverage-map/status-quo/issue-83601.rs
new file mode 100644
index 00000000000..0b72a81947c
--- /dev/null
+++ b/tests/coverage-map/status-quo/issue-83601.rs
@@ -0,0 +1,14 @@
+// Shows that rust-lang/rust/83601 is resolved
+
+#[derive(Debug, PartialEq, Eq)]
+struct Foo(u32);
+
+fn main() {
+    let bar = Foo(1);
+    assert_eq!(bar, Foo(1));
+    let baz = Foo(0);
+    assert_ne!(baz, Foo(1));
+    println!("{:?}", Foo(1));
+    println!("{:?}", bar);
+    println!("{:?}", baz);
+}
diff --git a/tests/coverage-map/status-quo/issue-84561.cov-map b/tests/coverage-map/status-quo/issue-84561.cov-map
new file mode 100644
index 00000000000..fe098fd396c
--- /dev/null
+++ b/tests/coverage-map/status-quo/issue-84561.cov-map
@@ -0,0 +1,233 @@
+Function name: <issue_84561::Foo as core::cmp::PartialEq>::eq
+Raw bytes (14): 0x[01, 01, 00, 02, 01, 04, 0a, 00, 13, 00, 00, 0a, 00, 13]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 4, 10) to (start + 0, 19)
+- Code(Zero) at (prev + 0, 10) to (start + 0, 19)
+
+Function name: <issue_84561::Foo as core::fmt::Debug>::fmt
+Raw bytes (29): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 89, 01, 09, 00, 25, 05, 00, 25, 00, 26, 02, 01, 09, 00, 0f, 07, 01, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 137, 9) to (start + 0, 37)
+- Code(Counter(1)) at (prev + 0, 37) to (start + 0, 38)
+- Code(Expression(0, Sub)) at (prev + 1, 9) to (start + 0, 15)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 0, 6)
+    = (c1 + (c0 - c1))
+
+Function name: issue_84561::main
+Raw bytes (10): 0x[01, 01, 00, 01, 01, b2, 01, 01, 04, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 178, 1) to (start + 4, 2)
+
+Function name: issue_84561::test1
+Raw bytes (78): 0x[01, 01, 0e, 05, 06, 01, 05, 09, 36, 03, 09, 0d, 2e, 33, 0d, 09, 36, 03, 09, 11, 26, 2b, 11, 0d, 2e, 33, 0d, 09, 36, 03, 09, 09, 01, 98, 01, 01, 01, 0b, 05, 01, 0c, 00, 1e, 03, 01, 05, 00, 0b, 09, 00, 0c, 00, 1e, 33, 01, 0d, 01, 0b, 0d, 01, 0c, 00, 1e, 2b, 01, 05, 03, 0b, 11, 03, 0c, 00, 1e, 23, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 14
+- expression 0 operands: lhs = Counter(1), rhs = Expression(1, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 2 operands: lhs = Counter(2), rhs = Expression(13, Sub)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Counter(2)
+- expression 4 operands: lhs = Counter(3), rhs = Expression(11, Sub)
+- expression 5 operands: lhs = Expression(12, Add), rhs = Counter(3)
+- expression 6 operands: lhs = Counter(2), rhs = Expression(13, Sub)
+- expression 7 operands: lhs = Expression(0, Add), rhs = Counter(2)
+- expression 8 operands: lhs = Counter(4), rhs = Expression(9, Sub)
+- expression 9 operands: lhs = Expression(10, Add), rhs = Counter(4)
+- expression 10 operands: lhs = Counter(3), rhs = Expression(11, Sub)
+- expression 11 operands: lhs = Expression(12, Add), rhs = Counter(3)
+- expression 12 operands: lhs = Counter(2), rhs = Expression(13, Sub)
+- expression 13 operands: lhs = Expression(0, Add), rhs = Counter(2)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 152, 1) to (start + 1, 11)
+- Code(Counter(1)) at (prev + 1, 12) to (start + 0, 30)
+- Code(Expression(0, Add)) at (prev + 1, 5) to (start + 0, 11)
+    = (c1 + (c0 - c1))
+- Code(Counter(2)) at (prev + 0, 12) to (start + 0, 30)
+- Code(Expression(12, Add)) at (prev + 1, 13) to (start + 1, 11)
+    = (c2 + ((c1 + (c0 - c1)) - c2))
+- Code(Counter(3)) at (prev + 1, 12) to (start + 0, 30)
+- Code(Expression(10, Add)) at (prev + 1, 5) to (start + 3, 11)
+    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
+- Code(Counter(4)) at (prev + 3, 12) to (start + 0, 30)
+- Code(Expression(8, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4))
+
+Function name: issue_84561::test2
+Raw bytes (24): 0x[01, 01, 02, 05, 06, 01, 05, 03, 01, ae, 01, 01, 01, 10, 05, 01, 11, 00, 23, 03, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(1), rhs = Expression(1, Sub)
+- expression 1 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 3
+- Code(Counter(0)) at (prev + 174, 1) to (start + 1, 16)
+- Code(Counter(1)) at (prev + 1, 17) to (start + 0, 35)
+- Code(Expression(0, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: issue_84561::test2::call_print
+Raw bytes (10): 0x[01, 01, 00, 01, 01, a5, 01, 09, 02, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 165, 9) to (start + 2, 10)
+
+Function name: issue_84561::test3
+Raw bytes (437): 0x[01, 01, 41, 05, 09, 0d, 11, 15, 19, 12, 1d, 15, 19, 21, 25, 1e, 29, 21, 25, 31, 39, 3d, 41, 2e, 45, 3d, 41, 42, 49, 45, 4d, 3f, 51, 42, 49, 45, 4d, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 59, 92, 01, 55, 51, 59, 8f, 01, 5d, 92, 01, 55, 51, 59, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 59, 82, 01, 65, 87, 01, 61, 5d, 8a, 01, 8f, 01, 5d, 92, 01, 55, 51, 59, 75, f6, 01, fb, 01, 79, 71, fe, 01, 82, 02, 71, 69, 6d, 71, fe, 01, 82, 02, 71, 69, 6d, 69, 6d, 82, 02, 71, 69, 6d, fb, 01, 79, 71, fe, 01, 82, 02, 71, 69, 6d, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 71, fe, 01, 82, 02, 71, 69, 6d, ee, 01, 81, 01, f3, 01, 7d, 75, f6, 01, fb, 01, 79, 71, fe, 01, 82, 02, 71, 69, 6d, 33, 01, 06, 01, 03, 1c, 05, 04, 09, 01, 1c, 02, 02, 05, 04, 1f, 0d, 05, 05, 00, 1f, 06, 01, 05, 00, 1f, 15, 01, 09, 01, 1c, 12, 02, 05, 00, 1f, 0e, 01, 05, 00, 0f, 00, 00, 20, 00, 30, 21, 01, 05, 03, 0f, 00, 03, 20, 00, 30, 00, 00, 33, 00, 41, 00, 00, 4b, 00, 5a, 1e, 01, 05, 00, 0f, 00, 05, 09, 03, 10, 00, 05, 0d, 00, 1b, 00, 02, 0d, 00, 1c, 1a, 04, 09, 05, 06, 31, 06, 05, 03, 06, 22, 04, 05, 03, 06, 3d, 04, 09, 04, 06, 2e, 05, 08, 00, 0f, 45, 01, 09, 03, 0a, 2a, 05, 09, 03, 0a, 3f, 05, 08, 00, 0f, 51, 01, 09, 00, 13, 00, 03, 0d, 00, 1d, 3a, 03, 09, 00, 13, 00, 03, 0d, 00, 1d, 87, 01, 03, 05, 00, 0f, 8f, 01, 01, 0c, 00, 13, 5d, 01, 0d, 00, 13, 8a, 01, 02, 0d, 00, 13, 82, 01, 04, 05, 02, 13, 65, 03, 0d, 00, 13, 7e, 02, 0d, 00, 13, f3, 01, 03, 05, 00, 0f, 69, 01, 0c, 00, 13, 6d, 01, 0d, 03, 0e, 75, 04, 0d, 00, 13, fb, 01, 02, 0d, 00, 17, 82, 02, 01, 14, 00, 1b, 71, 01, 15, 00, 1b, fe, 01, 02, 15, 00, 1b, f6, 01, 04, 0d, 00, 13, 7d, 03, 09, 00, 19, ee, 01, 02, 05, 00, 0f, ea, 01, 03, 09, 00, 22, 00, 02, 05, 00, 0f, 00, 03, 09, 00, 2c, 00, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 65
+- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 1 operands: lhs = Counter(3), rhs = Counter(4)
+- expression 2 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 3 operands: lhs = Expression(4, Sub), rhs = Counter(7)
+- expression 4 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 5 operands: lhs = Counter(8), rhs = Counter(9)
+- expression 6 operands: lhs = Expression(7, Sub), rhs = Counter(10)
+- expression 7 operands: lhs = Counter(8), rhs = Counter(9)
+- expression 8 operands: lhs = Counter(12), rhs = Counter(14)
+- expression 9 operands: lhs = Counter(15), rhs = Counter(16)
+- expression 10 operands: lhs = Expression(11, Sub), rhs = Counter(17)
+- expression 11 operands: lhs = Counter(15), rhs = Counter(16)
+- expression 12 operands: lhs = Expression(16, Sub), rhs = Counter(18)
+- expression 13 operands: lhs = Counter(17), rhs = Counter(19)
+- expression 14 operands: lhs = Expression(15, Add), rhs = Counter(20)
+- expression 15 operands: lhs = Expression(16, Sub), rhs = Counter(18)
+- expression 16 operands: lhs = Counter(17), rhs = Counter(19)
+- expression 17 operands: lhs = Counter(23), rhs = Expression(34, Sub)
+- expression 18 operands: lhs = Expression(35, Add), rhs = Counter(23)
+- expression 19 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 20 operands: lhs = Counter(20), rhs = Counter(22)
+- expression 21 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 22 operands: lhs = Counter(20), rhs = Counter(22)
+- expression 23 operands: lhs = Expression(35, Add), rhs = Counter(23)
+- expression 24 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 25 operands: lhs = Counter(20), rhs = Counter(22)
+- expression 26 operands: lhs = Expression(33, Add), rhs = Counter(24)
+- expression 27 operands: lhs = Counter(23), rhs = Expression(34, Sub)
+- expression 28 operands: lhs = Expression(35, Add), rhs = Counter(23)
+- expression 29 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 30 operands: lhs = Counter(20), rhs = Counter(22)
+- expression 31 operands: lhs = Expression(32, Sub), rhs = Counter(25)
+- expression 32 operands: lhs = Expression(33, Add), rhs = Counter(24)
+- expression 33 operands: lhs = Counter(23), rhs = Expression(34, Sub)
+- expression 34 operands: lhs = Expression(35, Add), rhs = Counter(23)
+- expression 35 operands: lhs = Expression(36, Sub), rhs = Counter(21)
+- expression 36 operands: lhs = Counter(20), rhs = Counter(22)
+- expression 37 operands: lhs = Counter(29), rhs = Expression(61, Sub)
+- expression 38 operands: lhs = Expression(62, Add), rhs = Counter(30)
+- expression 39 operands: lhs = Counter(28), rhs = Expression(63, Sub)
+- expression 40 operands: lhs = Expression(64, Sub), rhs = Counter(28)
+- expression 41 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 42 operands: lhs = Counter(28), rhs = Expression(63, Sub)
+- expression 43 operands: lhs = Expression(64, Sub), rhs = Counter(28)
+- expression 44 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 45 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 46 operands: lhs = Expression(64, Sub), rhs = Counter(28)
+- expression 47 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 48 operands: lhs = Expression(62, Add), rhs = Counter(30)
+- expression 49 operands: lhs = Counter(28), rhs = Expression(63, Sub)
+- expression 50 operands: lhs = Expression(64, Sub), rhs = Counter(28)
+- expression 51 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 52 operands: lhs = Expression(60, Add), rhs = Counter(31)
+- expression 53 operands: lhs = Counter(29), rhs = Expression(61, Sub)
+- expression 54 operands: lhs = Expression(62, Add), rhs = Counter(30)
+- expression 55 operands: lhs = Counter(28), rhs = Expression(63, Sub)
+- expression 56 operands: lhs = Expression(64, Sub), rhs = Counter(28)
+- expression 57 operands: lhs = Counter(26), rhs = Counter(27)
+- expression 58 operands: lhs = Expression(59, Sub), rhs = Counter(32)
+- expression 59 operands: lhs = Expression(60, Add), rhs = Counter(31)
+- expression 60 operands: lhs = Counter(29), rhs = Expression(61, Sub)
+- expression 61 operands: lhs = Expression(62, Add), rhs = Counter(30)
+- expression 62 operands: lhs = Counter(28), rhs = Expression(63, Sub)
+- expression 63 operands: lhs = Expression(64, Sub), rhs = Counter(28)
+- expression 64 operands: lhs = Counter(26), rhs = Counter(27)
+Number of file 0 mappings: 51
+- Code(Counter(0)) at (prev + 6, 1) to (start + 3, 28)
+- Code(Counter(1)) at (prev + 4, 9) to (start + 1, 28)
+- Code(Expression(0, Sub)) at (prev + 2, 5) to (start + 4, 31)
+    = (c1 - c2)
+- Code(Counter(3)) at (prev + 5, 5) to (start + 0, 31)
+- Code(Expression(1, Sub)) at (prev + 1, 5) to (start + 0, 31)
+    = (c3 - c4)
+- Code(Counter(5)) at (prev + 1, 9) to (start + 1, 28)
+- Code(Expression(4, Sub)) at (prev + 2, 5) to (start + 0, 31)
+    = (c5 - c6)
+- Code(Expression(3, Sub)) at (prev + 1, 5) to (start + 0, 15)
+    = ((c5 - c6) - c7)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 48)
+- Code(Counter(8)) at (prev + 1, 5) to (start + 3, 15)
+- Code(Zero) at (prev + 3, 32) to (start + 0, 48)
+- Code(Zero) at (prev + 0, 51) to (start + 0, 65)
+- Code(Zero) at (prev + 0, 75) to (start + 0, 90)
+- Code(Expression(7, Sub)) at (prev + 1, 5) to (start + 0, 15)
+    = (c8 - c9)
+- Code(Zero) at (prev + 5, 9) to (start + 3, 16)
+- Code(Zero) at (prev + 5, 13) to (start + 0, 27)
+- Code(Zero) at (prev + 2, 13) to (start + 0, 28)
+- Code(Expression(6, Sub)) at (prev + 4, 9) to (start + 5, 6)
+    = ((c8 - c9) - c10)
+- Code(Counter(12)) at (prev + 6, 5) to (start + 3, 6)
+- Code(Expression(8, Sub)) at (prev + 4, 5) to (start + 3, 6)
+    = (c12 - c14)
+- Code(Counter(15)) at (prev + 4, 9) to (start + 4, 6)
+- Code(Expression(11, Sub)) at (prev + 5, 8) to (start + 0, 15)
+    = (c15 - c16)
+- Code(Counter(17)) at (prev + 1, 9) to (start + 3, 10)
+- Code(Expression(10, Sub)) at (prev + 5, 9) to (start + 3, 10)
+    = ((c15 - c16) - c17)
+- Code(Expression(15, Add)) at (prev + 5, 8) to (start + 0, 15)
+    = ((c17 - c19) + c18)
+- Code(Counter(20)) at (prev + 1, 9) to (start + 0, 19)
+- Code(Zero) at (prev + 3, 13) to (start + 0, 29)
+- Code(Expression(14, Sub)) at (prev + 3, 9) to (start + 0, 19)
+    = (((c17 - c19) + c18) - c20)
+- Code(Zero) at (prev + 3, 13) to (start + 0, 29)
+- Code(Expression(33, Add)) at (prev + 3, 5) to (start + 0, 15)
+    = (c23 + (((c20 - c22) + c21) - c23))
+- Code(Expression(35, Add)) at (prev + 1, 12) to (start + 0, 19)
+    = ((c20 - c22) + c21)
+- Code(Counter(23)) at (prev + 1, 13) to (start + 0, 19)
+- Code(Expression(34, Sub)) at (prev + 2, 13) to (start + 0, 19)
+    = (((c20 - c22) + c21) - c23)
+- Code(Expression(32, Sub)) at (prev + 4, 5) to (start + 2, 19)
+    = ((c23 + (((c20 - c22) + c21) - c23)) - c24)
+- Code(Counter(25)) at (prev + 3, 13) to (start + 0, 19)
+- Code(Expression(31, Sub)) at (prev + 2, 13) to (start + 0, 19)
+    = (((c23 + (((c20 - c22) + c21) - c23)) - c24) - c25)
+- Code(Expression(60, Add)) at (prev + 3, 5) to (start + 0, 15)
+    = (c29 + ((c28 + ((c26 - c27) - c28)) - c30))
+- Code(Counter(26)) at (prev + 1, 12) to (start + 0, 19)
+- Code(Counter(27)) at (prev + 1, 13) to (start + 3, 14)
+- Code(Counter(29)) at (prev + 4, 13) to (start + 0, 19)
+- Code(Expression(62, Add)) at (prev + 2, 13) to (start + 0, 23)
+    = (c28 + ((c26 - c27) - c28))
+- Code(Expression(64, Sub)) at (prev + 1, 20) to (start + 0, 27)
+    = (c26 - c27)
+- Code(Counter(28)) at (prev + 1, 21) to (start + 0, 27)
+- Code(Expression(63, Sub)) at (prev + 2, 21) to (start + 0, 27)
+    = ((c26 - c27) - c28)
+- Code(Expression(61, Sub)) at (prev + 4, 13) to (start + 0, 19)
+    = ((c28 + ((c26 - c27) - c28)) - c30)
+- Code(Counter(31)) at (prev + 3, 9) to (start + 0, 25)
+- Code(Expression(59, Sub)) at (prev + 2, 5) to (start + 0, 15)
+    = ((c29 + ((c28 + ((c26 - c27) - c28)) - c30)) - c31)
+- Code(Expression(58, Sub)) at (prev + 3, 9) to (start + 0, 34)
+    = (((c29 + ((c28 + ((c26 - c27) - c28)) - c30)) - c31) - c32)
+- Code(Zero) at (prev + 2, 5) to (start + 0, 15)
+- Code(Zero) at (prev + 3, 9) to (start + 0, 44)
+- Code(Zero) at (prev + 2, 1) to (start + 0, 2)
+
diff --git a/tests/coverage-map/status-quo/issue-84561.rs b/tests/coverage-map/status-quo/issue-84561.rs
new file mode 100644
index 00000000000..facf5b5b4cf
--- /dev/null
+++ b/tests/coverage-map/status-quo/issue-84561.rs
@@ -0,0 +1,182 @@
+// This demonstrated Issue #84561: function-like macros produce unintuitive coverage results.
+
+// failure-status: 101
+#[derive(PartialEq, Eq)]
+struct Foo(u32);
+fn test3() {
+    let is_true = std::env::args().len() == 1;
+    let bar = Foo(1);
+    assert_eq!(bar, Foo(1));
+    let baz = Foo(0);
+    assert_ne!(baz, Foo(1));
+    println!("{:?}", Foo(1));
+    println!("{:?}", bar);
+    println!("{:?}", baz);
+
+    assert_eq!(Foo(1), Foo(1));
+    assert_ne!(Foo(0), Foo(1));
+    assert_eq!(Foo(2), Foo(2));
+    let bar = Foo(0);
+    assert_ne!(bar, Foo(3));
+    assert_ne!(Foo(0), Foo(4));
+    assert_eq!(Foo(3), Foo(3), "with a message");
+    println!("{:?}", bar);
+    println!("{:?}", Foo(1));
+
+    assert_ne!(Foo(0), Foo(5), "{}", if is_true { "true message" } else { "false message" });
+    assert_ne!(
+        Foo(0)
+        ,
+        Foo(5)
+        ,
+        "{}"
+        ,
+        if
+        is_true
+        {
+            "true message"
+        } else {
+            "false message"
+        }
+    );
+
+    let is_true = std::env::args().len() == 1;
+
+    assert_eq!(
+        Foo(1),
+        Foo(1)
+    );
+    assert_ne!(
+        Foo(0),
+        Foo(1)
+    );
+    assert_eq!(
+        Foo(2),
+        Foo(2)
+    );
+    let bar = Foo(1);
+    assert_ne!(
+        bar,
+        Foo(3)
+    );
+    if is_true {
+        assert_ne!(
+            Foo(0),
+            Foo(4)
+        );
+    } else {
+        assert_eq!(
+            Foo(3),
+            Foo(3)
+        );
+    }
+    if is_true {
+        assert_ne!(
+            Foo(0),
+            Foo(4),
+            "with a message"
+        );
+    } else {
+        assert_eq!(
+            Foo(3),
+            Foo(3),
+            "with a message"
+        );
+    }
+    assert_ne!(
+        if is_true {
+            Foo(0)
+        } else {
+            Foo(1)
+        },
+        Foo(5)
+    );
+    assert_ne!(
+        Foo(5),
+        if is_true {
+            Foo(0)
+        } else {
+            Foo(1)
+        }
+    );
+    assert_ne!(
+        if is_true {
+            assert_eq!(
+                Foo(3),
+                Foo(3)
+            );
+            Foo(0)
+        } else {
+            assert_ne!(
+                if is_true {
+                    Foo(0)
+                } else {
+                    Foo(1)
+                },
+                Foo(5)
+            );
+            Foo(1)
+        },
+        Foo(5),
+        "with a message"
+    );
+    assert_eq!(
+        Foo(1),
+        Foo(3),
+        "this assert should fail"
+    );
+    assert_eq!(
+        Foo(3),
+        Foo(3),
+        "this assert should not be reached"
+    );
+}
+
+impl std::fmt::Debug for Foo {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        write!(f, "try and succeed")?;
+        Ok(())
+    }
+}
+
+static mut DEBUG_LEVEL_ENABLED: bool = false;
+
+macro_rules! debug {
+    ($($arg:tt)+) => (
+        if unsafe { DEBUG_LEVEL_ENABLED } {
+            println!($($arg)+);
+        }
+    );
+}
+
+fn test1() {
+    debug!("debug is enabled");
+    debug!("debug is enabled");
+    let _ = 0;
+    debug!("debug is enabled");
+    unsafe {
+        DEBUG_LEVEL_ENABLED = true;
+    }
+    debug!("debug is enabled");
+}
+
+macro_rules! call_debug {
+    ($($arg:tt)+) => (
+        fn call_print(s: &str) {
+            print!("{}", s);
+        }
+
+        call_print("called from call_debug: ");
+        debug!($($arg)+);
+    );
+}
+
+fn test2() {
+    call_debug!("debug is enabled");
+}
+
+fn main() {
+    test1();
+    test2();
+    test3();
+}
diff --git a/tests/coverage-map/status-quo/issue-93054.cov-map b/tests/coverage-map/status-quo/issue-93054.cov-map
new file mode 100644
index 00000000000..52fe7f58d15
--- /dev/null
+++ b/tests/coverage-map/status-quo/issue-93054.cov-map
@@ -0,0 +1,24 @@
+Function name: issue_93054::foo2 (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 16, 01, 00, 1d]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 22, 1) to (start + 0, 29)
+
+Function name: issue_93054::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1e, 01, 00, 0d]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 30, 1) to (start + 0, 13)
+
+Function name: issue_93054::make (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1a, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 26, 1) to (start + 2, 2)
+
diff --git a/tests/coverage-map/status-quo/issue-93054.rs b/tests/coverage-map/status-quo/issue-93054.rs
new file mode 100644
index 00000000000..da546cfeef8
--- /dev/null
+++ b/tests/coverage-map/status-quo/issue-93054.rs
@@ -0,0 +1,30 @@
+#![allow(dead_code, unreachable_code)]
+
+// Regression test for #93054: Functions using uninhabited types often only have a single,
+// unreachable basic block which doesn't get instrumented. This should not cause llvm-cov to fail.
+// Since these kinds functions can't be invoked anyway, it's ok to not have coverage data for them.
+
+// compile-flags: --edition=2021
+
+enum Never {}
+
+impl Never {
+    fn foo(self) {
+        match self {}
+        make().map(|never| match never {});
+    }
+
+    fn bar(&self) {
+        match *self {}
+    }
+}
+
+async fn foo2(never: Never) {
+    match never {}
+}
+
+fn make() -> Option<Never> {
+    None
+}
+
+fn main() {}
diff --git a/tests/coverage-map/status-quo/lazy_boolean.cov-map b/tests/coverage-map/status-quo/lazy_boolean.cov-map
new file mode 100644
index 00000000000..b18a9640433
--- /dev/null
+++ b/tests/coverage-map/status-quo/lazy_boolean.cov-map
@@ -0,0 +1,223 @@
+Function name: lazy_boolean::main
+Raw bytes (646): 0x[01, 01, a8, 01, 01, 05, 09, 9a, 05, 9f, 05, 09, 05, 02, 05, 02, 9f, 05, 09, 05, 02, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 97, 05, 00, 09, 9a, 05, 9f, 05, 09, 05, 02, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 8f, 05, 00, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 87, 05, 00, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, ff, 04, 00, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, f7, 04, 1d, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 1d, f2, 04, f7, 04, 1d, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, ef, 04, 21, 1d, f2, 04, f7, 04, 1d, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 21, ea, 04, ef, 04, 21, 1d, f2, 04, f7, 04, 1d, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, e7, 04, 25, 21, ea, 04, ef, 04, 21, 1d, f2, 04, f7, 04, 1d, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 25, e2, 04, e7, 04, 25, 21, ea, 04, ef, 04, 21, 1d, f2, 04, f7, 04, 1d, 19, fa, 04, ff, 04, 19, 15, 82, 05, 87, 05, 15, 11, 8a, 05, 8f, 05, 11, 0d, 92, 05, 97, 05, 0d, 09, 9a, 05, 9f, 05, 09, 05, 02, 1c, 01, 03, 01, 07, 0f, 05, 07, 10, 04, 06, 02, 04, 06, 00, 07, 97, 05, 02, 09, 00, 11, 9f, 05, 02, 0d, 00, 12, 9a, 05, 02, 0d, 00, 12, 8f, 05, 03, 09, 00, 11, 33, 02, 0d, 00, 12, 92, 05, 02, 0d, 00, 12, 87, 05, 02, 09, 00, 11, 6f, 00, 14, 00, 19, 11, 00, 1d, 00, 22, ff, 04, 01, 09, 00, 11, ab, 01, 00, 14, 00, 19, 15, 00, 1d, 00, 22, cb, 01, 04, 09, 00, 10, fa, 04, 01, 05, 03, 06, 19, 03, 06, 00, 07, f7, 04, 03, 09, 00, 10, 1d, 01, 05, 03, 06, f2, 04, 05, 05, 03, 06, ef, 04, 05, 09, 00, 10, ea, 04, 00, 11, 02, 06, 21, 02, 06, 00, 07, e7, 04, 02, 08, 00, 0f, 25, 00, 10, 02, 06, e2, 04, 02, 0c, 02, 06, df, 04, 03, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 168
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 2 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 3 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 4 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 5 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 7 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 8 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 9 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 10 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 11 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 12 operands: lhs = Expression(165, Add), rhs = Zero
+- expression 13 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 14 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 15 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 16 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 17 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 18 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 19 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 20 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 21 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 22 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 23 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 24 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 25 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 26 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 27 operands: lhs = Expression(163, Add), rhs = Zero
+- expression 28 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 29 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 30 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 31 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 32 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 33 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 34 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 35 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 36 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 37 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 38 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 39 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 40 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 41 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 42 operands: lhs = Expression(161, Add), rhs = Zero
+- expression 43 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 44 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 45 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 46 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 47 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 48 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 49 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 50 operands: lhs = Expression(159, Add), rhs = Zero
+- expression 51 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 52 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 53 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 54 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 55 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 56 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 57 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 58 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 59 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 60 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 61 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 62 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 63 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 64 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 65 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 66 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 67 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 68 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 69 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 70 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 71 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 72 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 73 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 74 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 75 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 76 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 77 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 78 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 79 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 80 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 81 operands: lhs = Expression(157, Add), rhs = Counter(7)
+- expression 82 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 83 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 84 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 85 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 86 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 87 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 88 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 89 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 90 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 91 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 92 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 93 operands: lhs = Counter(7), rhs = Expression(156, Sub)
+- expression 94 operands: lhs = Expression(157, Add), rhs = Counter(7)
+- expression 95 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 96 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 97 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 98 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 99 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 100 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 101 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 102 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 103 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 104 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 105 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 106 operands: lhs = Expression(155, Add), rhs = Counter(8)
+- expression 107 operands: lhs = Counter(7), rhs = Expression(156, Sub)
+- expression 108 operands: lhs = Expression(157, Add), rhs = Counter(7)
+- expression 109 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 110 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 111 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 112 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 113 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 114 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 115 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 116 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 117 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 118 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 119 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 120 operands: lhs = Counter(8), rhs = Expression(154, Sub)
+- expression 121 operands: lhs = Expression(155, Add), rhs = Counter(8)
+- expression 122 operands: lhs = Counter(7), rhs = Expression(156, Sub)
+- expression 123 operands: lhs = Expression(157, Add), rhs = Counter(7)
+- expression 124 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 125 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 126 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 127 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 128 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 129 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 130 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 131 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 132 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 133 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 134 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 135 operands: lhs = Expression(153, Add), rhs = Counter(9)
+- expression 136 operands: lhs = Counter(8), rhs = Expression(154, Sub)
+- expression 137 operands: lhs = Expression(155, Add), rhs = Counter(8)
+- expression 138 operands: lhs = Counter(7), rhs = Expression(156, Sub)
+- expression 139 operands: lhs = Expression(157, Add), rhs = Counter(7)
+- expression 140 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 141 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 142 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 143 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 144 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 145 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 146 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 147 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 148 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 149 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 150 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 151 operands: lhs = Counter(9), rhs = Expression(152, Sub)
+- expression 152 operands: lhs = Expression(153, Add), rhs = Counter(9)
+- expression 153 operands: lhs = Counter(8), rhs = Expression(154, Sub)
+- expression 154 operands: lhs = Expression(155, Add), rhs = Counter(8)
+- expression 155 operands: lhs = Counter(7), rhs = Expression(156, Sub)
+- expression 156 operands: lhs = Expression(157, Add), rhs = Counter(7)
+- expression 157 operands: lhs = Counter(6), rhs = Expression(158, Sub)
+- expression 158 operands: lhs = Expression(159, Add), rhs = Counter(6)
+- expression 159 operands: lhs = Counter(5), rhs = Expression(160, Sub)
+- expression 160 operands: lhs = Expression(161, Add), rhs = Counter(5)
+- expression 161 operands: lhs = Counter(4), rhs = Expression(162, Sub)
+- expression 162 operands: lhs = Expression(163, Add), rhs = Counter(4)
+- expression 163 operands: lhs = Counter(3), rhs = Expression(164, Sub)
+- expression 164 operands: lhs = Expression(165, Add), rhs = Counter(3)
+- expression 165 operands: lhs = Counter(2), rhs = Expression(166, Sub)
+- expression 166 operands: lhs = Expression(167, Add), rhs = Counter(2)
+- expression 167 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 28
+- Code(Counter(0)) at (prev + 3, 1) to (start + 7, 15)
+- Code(Counter(1)) at (prev + 7, 16) to (start + 4, 6)
+- Code(Expression(0, Sub)) at (prev + 4, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(165, Add)) at (prev + 2, 9) to (start + 0, 17)
+    = (c2 + ((c1 + (c0 - c1)) - c2))
+- Code(Expression(167, Add)) at (prev + 2, 13) to (start + 0, 18)
+    = (c1 + (c0 - c1))
+- Code(Expression(166, Sub)) at (prev + 2, 13) to (start + 0, 18)
+    = ((c1 + (c0 - c1)) - c2)
+- Code(Expression(163, Add)) at (prev + 3, 9) to (start + 0, 17)
+    = (c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3))
+- Code(Expression(12, Add)) at (prev + 2, 13) to (start + 0, 18)
+    = ((c2 + ((c1 + (c0 - c1)) - c2)) + Zero)
+- Code(Expression(164, Sub)) at (prev + 2, 13) to (start + 0, 18)
+    = ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)
+- Code(Expression(161, Add)) at (prev + 2, 9) to (start + 0, 17)
+    = (c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4))
+- Code(Expression(27, Add)) at (prev + 0, 20) to (start + 0, 25)
+    = ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) + Zero)
+- Code(Counter(4)) at (prev + 0, 29) to (start + 0, 34)
+- Code(Expression(159, Add)) at (prev + 1, 9) to (start + 0, 17)
+    = (c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5))
+- Code(Expression(42, Add)) at (prev + 0, 20) to (start + 0, 25)
+    = ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) + Zero)
+- Code(Counter(5)) at (prev + 0, 29) to (start + 0, 34)
+- Code(Expression(50, Add)) at (prev + 4, 9) to (start + 0, 16)
+    = ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) + Zero)
+- Code(Expression(158, Sub)) at (prev + 1, 5) to (start + 3, 6)
+    = ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)
+- Code(Counter(6)) at (prev + 3, 6) to (start + 0, 7)
+- Code(Expression(157, Add)) at (prev + 3, 9) to (start + 0, 16)
+    = (c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6))
+- Code(Counter(7)) at (prev + 1, 5) to (start + 3, 6)
+- Code(Expression(156, Sub)) at (prev + 5, 5) to (start + 3, 6)
+    = ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)
+- Code(Expression(155, Add)) at (prev + 5, 9) to (start + 0, 16)
+    = (c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7))
+- Code(Expression(154, Sub)) at (prev + 0, 17) to (start + 2, 6)
+    = ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8)
+- Code(Counter(8)) at (prev + 2, 6) to (start + 0, 7)
+- Code(Expression(153, Add)) at (prev + 2, 8) to (start + 0, 15)
+    = (c8 + ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8))
+- Code(Counter(9)) at (prev + 0, 16) to (start + 2, 6)
+- Code(Expression(152, Sub)) at (prev + 2, 12) to (start + 2, 6)
+    = ((c8 + ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8)) - c9)
+- Code(Expression(151, Add)) at (prev + 3, 1) to (start + 0, 2)
+    = (c9 + ((c8 + ((c7 + ((c6 + ((c5 + ((c4 + ((c3 + ((c2 + ((c1 + (c0 - c1)) - c2)) - c3)) - c4)) - c5)) - c6)) - c7)) - c8)) - c9))
+
diff --git a/tests/coverage-map/status-quo/lazy_boolean.rs b/tests/coverage-map/status-quo/lazy_boolean.rs
new file mode 100644
index 00000000000..bb6219e851c
--- /dev/null
+++ b/tests/coverage-map/status-quo/lazy_boolean.rs
@@ -0,0 +1,61 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let (mut a, mut b, mut c) = (0, 0, 0);
+    if is_true {
+        a = 1;
+        b = 10;
+        c = 100;
+    }
+    let
+        somebool
+        =
+            a < b
+        ||
+            b < c
+    ;
+    let
+        somebool
+        =
+            b < a
+        ||
+            b < c
+    ;
+    let somebool = a < b && b < c;
+    let somebool = b < a && b < c;
+
+    if
+        !
+        is_true
+    {
+        a = 2
+        ;
+    }
+
+    if
+        is_true
+    {
+        b = 30
+        ;
+    }
+    else
+    {
+        c = 400
+        ;
+    }
+
+    if !is_true {
+        a = 2;
+    }
+
+    if is_true {
+        b = 30;
+    } else {
+        c = 400;
+    }
+}
diff --git a/tests/coverage-map/status-quo/loop_break_value.cov-map b/tests/coverage-map/status-quo/loop_break_value.cov-map
new file mode 100644
index 00000000000..75018442d07
--- /dev/null
+++ b/tests/coverage-map/status-quo/loop_break_value.cov-map
@@ -0,0 +1,8 @@
+Function name: loop_break_value::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 03, 01, 0a, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 3, 1) to (start + 10, 2)
+
diff --git a/tests/coverage-map/status-quo/loop_break_value.rs b/tests/coverage-map/status-quo/loop_break_value.rs
new file mode 100644
index 00000000000..dbc4fad7a23
--- /dev/null
+++ b/tests/coverage-map/status-quo/loop_break_value.rs
@@ -0,0 +1,13 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    let result
+        =
+            loop
+        {
+            break
+            10
+            ;
+        }
+    ;
+}
diff --git a/tests/coverage-map/status-quo/loops_branches.cov-map b/tests/coverage-map/status-quo/loops_branches.cov-map
new file mode 100644
index 00000000000..56fafc0a67b
--- /dev/null
+++ b/tests/coverage-map/status-quo/loops_branches.cov-map
@@ -0,0 +1,193 @@
+Function name: <loops_branches::DebugTest as core::fmt::Debug>::fmt
+Raw bytes (262): 0x[01, 01, 36, 05, 09, 0a, 02, 00, 00, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, d3, 01, d7, 01, 0d, 00, 11, 15, ca, 01, 00, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, ca, 01, 15, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, c6, 01, 1d, ca, 01, 15, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, be, 01, c2, 01, 00, 00, c6, 01, 1d, ca, 01, 15, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, bb, 01, 11, be, 01, c2, 01, 00, 00, c6, 01, 1d, ca, 01, 15, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, 25, b3, 01, b6, 01, 19, bb, 01, 11, be, 01, c2, 01, 00, 00, c6, 01, 1d, ca, 01, 15, cf, 01, 19, d3, 01, d7, 01, 0d, 00, 11, 15, 14, 01, 09, 05, 01, 10, 05, 02, 10, 00, 15, 00, 01, 17, 00, 1b, 00, 00, 1c, 00, 1e, 02, 01, 0e, 00, 0f, 07, 01, 0d, 00, 1e, 25, 00, 1e, 00, 1f, 00, 01, 10, 01, 0a, ca, 01, 03, 0d, 00, 0e, cf, 01, 00, 12, 00, 17, 2b, 01, 10, 00, 14, c6, 01, 01, 14, 00, 19, 00, 01, 1b, 00, 1f, 00, 00, 20, 00, 22, c2, 01, 01, 12, 00, 13, bb, 01, 01, 11, 00, 22, b6, 01, 00, 22, 00, 23, 00, 01, 14, 01, 0e, 19, 03, 09, 00, 0f, af, 01, 01, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 54
+- expression 0 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 1 operands: lhs = Expression(2, Sub), rhs = Expression(0, Sub)
+- expression 2 operands: lhs = Zero, rhs = Zero
+- expression 3 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 4 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 5 operands: lhs = Counter(3), rhs = Zero
+- expression 6 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 7 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 8 operands: lhs = Counter(3), rhs = Zero
+- expression 9 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 10 operands: lhs = Expression(50, Sub), rhs = Zero
+- expression 11 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 12 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 13 operands: lhs = Counter(3), rhs = Zero
+- expression 14 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 15 operands: lhs = Expression(50, Sub), rhs = Counter(5)
+- expression 16 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 17 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 18 operands: lhs = Counter(3), rhs = Zero
+- expression 19 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 20 operands: lhs = Expression(49, Sub), rhs = Counter(7)
+- expression 21 operands: lhs = Expression(50, Sub), rhs = Counter(5)
+- expression 22 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 23 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 24 operands: lhs = Counter(3), rhs = Zero
+- expression 25 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 26 operands: lhs = Expression(47, Sub), rhs = Expression(48, Sub)
+- expression 27 operands: lhs = Zero, rhs = Zero
+- expression 28 operands: lhs = Expression(49, Sub), rhs = Counter(7)
+- expression 29 operands: lhs = Expression(50, Sub), rhs = Counter(5)
+- expression 30 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 31 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 32 operands: lhs = Counter(3), rhs = Zero
+- expression 33 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 34 operands: lhs = Expression(46, Add), rhs = Counter(4)
+- expression 35 operands: lhs = Expression(47, Sub), rhs = Expression(48, Sub)
+- expression 36 operands: lhs = Zero, rhs = Zero
+- expression 37 operands: lhs = Expression(49, Sub), rhs = Counter(7)
+- expression 38 operands: lhs = Expression(50, Sub), rhs = Counter(5)
+- expression 39 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 40 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 41 operands: lhs = Counter(3), rhs = Zero
+- expression 42 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 43 operands: lhs = Counter(9), rhs = Expression(44, Add)
+- expression 44 operands: lhs = Expression(45, Sub), rhs = Counter(6)
+- expression 45 operands: lhs = Expression(46, Add), rhs = Counter(4)
+- expression 46 operands: lhs = Expression(47, Sub), rhs = Expression(48, Sub)
+- expression 47 operands: lhs = Zero, rhs = Zero
+- expression 48 operands: lhs = Expression(49, Sub), rhs = Counter(7)
+- expression 49 operands: lhs = Expression(50, Sub), rhs = Counter(5)
+- expression 50 operands: lhs = Expression(51, Add), rhs = Counter(6)
+- expression 51 operands: lhs = Expression(52, Add), rhs = Expression(53, Add)
+- expression 52 operands: lhs = Counter(3), rhs = Zero
+- expression 53 operands: lhs = Counter(4), rhs = Counter(5)
+Number of file 0 mappings: 20
+- Code(Counter(0)) at (prev + 9, 5) to (start + 1, 16)
+- Code(Counter(1)) at (prev + 2, 16) to (start + 0, 21)
+- Code(Zero) at (prev + 1, 23) to (start + 0, 27)
+- Code(Zero) at (prev + 0, 28) to (start + 0, 30)
+- Code(Expression(0, Sub)) at (prev + 1, 14) to (start + 0, 15)
+    = (c1 - c2)
+- Code(Expression(1, Add)) at (prev + 1, 13) to (start + 0, 30)
+    = ((Zero - Zero) + (c1 - c2))
+- Code(Counter(9)) at (prev + 0, 30) to (start + 0, 31)
+- Code(Zero) at (prev + 1, 16) to (start + 1, 10)
+- Code(Expression(50, Sub)) at (prev + 3, 13) to (start + 0, 14)
+    = (((c3 + Zero) + (c4 + c5)) - c6)
+- Code(Expression(51, Add)) at (prev + 0, 18) to (start + 0, 23)
+    = ((c3 + Zero) + (c4 + c5))
+- Code(Expression(10, Add)) at (prev + 1, 16) to (start + 0, 20)
+    = ((((c3 + Zero) + (c4 + c5)) - c6) + Zero)
+- Code(Expression(49, Sub)) at (prev + 1, 20) to (start + 0, 25)
+    = ((((c3 + Zero) + (c4 + c5)) - c6) - c5)
+- Code(Zero) at (prev + 1, 27) to (start + 0, 31)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 34)
+- Code(Expression(48, Sub)) at (prev + 1, 18) to (start + 0, 19)
+    = (((((c3 + Zero) + (c4 + c5)) - c6) - c5) - c7)
+- Code(Expression(46, Add)) at (prev + 1, 17) to (start + 0, 34)
+    = ((Zero - Zero) + (((((c3 + Zero) + (c4 + c5)) - c6) - c5) - c7))
+- Code(Expression(45, Sub)) at (prev + 0, 34) to (start + 0, 35)
+    = (((Zero - Zero) + (((((c3 + Zero) + (c4 + c5)) - c6) - c5) - c7)) - c4)
+- Code(Zero) at (prev + 1, 20) to (start + 1, 14)
+- Code(Counter(6)) at (prev + 3, 9) to (start + 0, 15)
+- Code(Expression(43, Add)) at (prev + 1, 5) to (start + 0, 6)
+    = (c9 + ((((Zero - Zero) + (((((c3 + Zero) + (c4 + c5)) - c6) - c5) - c7)) - c4) + c6))
+
+Function name: <loops_branches::DisplayTest as core::fmt::Display>::fmt
+Raw bytes (266): 0x[01, 01, 38, 01, 05, 02, 09, 0e, 12, 00, 00, 02, 09, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, d7, 01, db, 01, 05, 0d, 11, 15, ce, 01, 00, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, ce, 01, 11, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, ca, 01, 1d, ce, 01, 11, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, c2, 01, c6, 01, 00, 00, ca, 01, 1d, ce, 01, 11, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, bf, 01, 15, c2, 01, c6, 01, 00, 00, ca, 01, 1d, ce, 01, 11, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, ba, 01, df, 01, bf, 01, 15, c2, 01, c6, 01, 00, 00, ca, 01, 1d, ce, 01, 11, d3, 01, 19, d7, 01, db, 01, 05, 0d, 11, 15, 19, 25, 14, 01, 22, 05, 01, 11, 00, 01, 12, 01, 0a, 02, 02, 10, 00, 15, 00, 01, 17, 00, 1b, 00, 00, 1c, 00, 1e, 12, 01, 0e, 00, 0f, 0b, 01, 0d, 00, 1e, 25, 00, 1e, 00, 1f, ce, 01, 02, 0d, 00, 0e, d3, 01, 00, 12, 00, 17, 33, 01, 10, 00, 15, 00, 00, 16, 01, 0e, ca, 01, 02, 14, 00, 19, 00, 01, 1b, 00, 1f, 00, 00, 20, 00, 22, c6, 01, 01, 12, 00, 13, bf, 01, 01, 11, 00, 22, ba, 01, 00, 22, 00, 23, 19, 03, 09, 00, 0f, b7, 01, 01, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 56
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(0, Sub), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(3, Sub), rhs = Expression(4, Sub)
+- expression 3 operands: lhs = Zero, rhs = Zero
+- expression 4 operands: lhs = Expression(0, Sub), rhs = Counter(2)
+- expression 5 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 6 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 7 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 8 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 9 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 10 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 11 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 12 operands: lhs = Expression(51, Sub), rhs = Zero
+- expression 13 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 14 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 15 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 16 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 17 operands: lhs = Expression(51, Sub), rhs = Counter(4)
+- expression 18 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 19 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 20 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 21 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 22 operands: lhs = Expression(50, Sub), rhs = Counter(7)
+- expression 23 operands: lhs = Expression(51, Sub), rhs = Counter(4)
+- expression 24 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 25 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 26 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 27 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 28 operands: lhs = Expression(48, Sub), rhs = Expression(49, Sub)
+- expression 29 operands: lhs = Zero, rhs = Zero
+- expression 30 operands: lhs = Expression(50, Sub), rhs = Counter(7)
+- expression 31 operands: lhs = Expression(51, Sub), rhs = Counter(4)
+- expression 32 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 33 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 34 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 35 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 36 operands: lhs = Expression(47, Add), rhs = Counter(5)
+- expression 37 operands: lhs = Expression(48, Sub), rhs = Expression(49, Sub)
+- expression 38 operands: lhs = Zero, rhs = Zero
+- expression 39 operands: lhs = Expression(50, Sub), rhs = Counter(7)
+- expression 40 operands: lhs = Expression(51, Sub), rhs = Counter(4)
+- expression 41 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 42 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 43 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 44 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 45 operands: lhs = Expression(46, Sub), rhs = Expression(55, Add)
+- expression 46 operands: lhs = Expression(47, Add), rhs = Counter(5)
+- expression 47 operands: lhs = Expression(48, Sub), rhs = Expression(49, Sub)
+- expression 48 operands: lhs = Zero, rhs = Zero
+- expression 49 operands: lhs = Expression(50, Sub), rhs = Counter(7)
+- expression 50 operands: lhs = Expression(51, Sub), rhs = Counter(4)
+- expression 51 operands: lhs = Expression(52, Add), rhs = Counter(6)
+- expression 52 operands: lhs = Expression(53, Add), rhs = Expression(54, Add)
+- expression 53 operands: lhs = Counter(1), rhs = Counter(3)
+- expression 54 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 55 operands: lhs = Counter(6), rhs = Counter(9)
+Number of file 0 mappings: 20
+- Code(Counter(0)) at (prev + 34, 5) to (start + 1, 17)
+- Code(Zero) at (prev + 1, 18) to (start + 1, 10)
+- Code(Expression(0, Sub)) at (prev + 2, 16) to (start + 0, 21)
+    = (c0 - c1)
+- Code(Zero) at (prev + 1, 23) to (start + 0, 27)
+- Code(Zero) at (prev + 0, 28) to (start + 0, 30)
+- Code(Expression(4, Sub)) at (prev + 1, 14) to (start + 0, 15)
+    = ((c0 - c1) - c2)
+- Code(Expression(2, Add)) at (prev + 1, 13) to (start + 0, 30)
+    = ((Zero - Zero) + ((c0 - c1) - c2))
+- Code(Counter(9)) at (prev + 0, 30) to (start + 0, 31)
+- Code(Expression(51, Sub)) at (prev + 2, 13) to (start + 0, 14)
+    = (((c1 + c3) + (c4 + c5)) - c6)
+- Code(Expression(52, Add)) at (prev + 0, 18) to (start + 0, 23)
+    = ((c1 + c3) + (c4 + c5))
+- Code(Expression(12, Add)) at (prev + 1, 16) to (start + 0, 21)
+    = ((((c1 + c3) + (c4 + c5)) - c6) + Zero)
+- Code(Zero) at (prev + 0, 22) to (start + 1, 14)
+- Code(Expression(50, Sub)) at (prev + 2, 20) to (start + 0, 25)
+    = ((((c1 + c3) + (c4 + c5)) - c6) - c4)
+- Code(Zero) at (prev + 1, 27) to (start + 0, 31)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 34)
+- Code(Expression(49, Sub)) at (prev + 1, 18) to (start + 0, 19)
+    = (((((c1 + c3) + (c4 + c5)) - c6) - c4) - c7)
+- Code(Expression(47, Add)) at (prev + 1, 17) to (start + 0, 34)
+    = ((Zero - Zero) + (((((c1 + c3) + (c4 + c5)) - c6) - c4) - c7))
+- Code(Expression(46, Sub)) at (prev + 0, 34) to (start + 0, 35)
+    = (((Zero - Zero) + (((((c1 + c3) + (c4 + c5)) - c6) - c4) - c7)) - c5)
+- Code(Counter(6)) at (prev + 3, 9) to (start + 0, 15)
+- Code(Expression(45, Add)) at (prev + 1, 5) to (start + 0, 6)
+    = ((((Zero - Zero) + (((((c1 + c3) + (c4 + c5)) - c6) - c4) - c7)) - c5) + (c6 + c9))
+
+Function name: loops_branches::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 37, 01, 05, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 55, 1) to (start + 5, 2)
+
diff --git a/tests/coverage-map/status-quo/loops_branches.rs b/tests/coverage-map/status-quo/loops_branches.rs
new file mode 100644
index 00000000000..f3a343bcc1f
--- /dev/null
+++ b/tests/coverage-map/status-quo/loops_branches.rs
@@ -0,0 +1,60 @@
+#![allow(unused_assignments, unused_variables, while_true)]
+
+// This test confirms that (1) unexecuted infinite loops are handled correctly by the
+// InstrumentCoverage MIR pass; and (2) Counter Expressions that subtract from zero can be dropped.
+
+struct DebugTest;
+
+impl std::fmt::Debug for DebugTest {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        if true {
+            if false {
+                while true {}
+            }
+            write!(f, "cool")?;
+        } else {
+        }
+
+        for i in 0..10 {
+            if true {
+                if false {
+                    while true {}
+                }
+                write!(f, "cool")?;
+            } else {
+            }
+        }
+        Ok(())
+    }
+}
+
+struct DisplayTest;
+
+impl std::fmt::Display for DisplayTest {
+    fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+        if false {
+        } else {
+            if false {
+                while true {}
+            }
+            write!(f, "cool")?;
+        }
+        for i in 0..10 {
+            if false {
+            } else {
+                if false {
+                    while true {}
+                }
+                write!(f, "cool")?;
+            }
+        }
+        Ok(())
+    }
+}
+
+fn main() {
+    let debug_test = DebugTest;
+    println!("{:?}", debug_test);
+    let display_test = DisplayTest;
+    println!("{}", display_test);
+}
diff --git a/tests/coverage-map/status-quo/match_or_pattern.cov-map b/tests/coverage-map/status-quo/match_or_pattern.cov-map
new file mode 100644
index 00000000000..d63407a99c3
--- /dev/null
+++ b/tests/coverage-map/status-quo/match_or_pattern.cov-map
@@ -0,0 +1,83 @@
+Function name: match_or_pattern::main
+Raw bytes (202): 0x[01, 01, 23, 01, 05, 05, 02, 09, 0d, 2f, 11, 09, 0d, 2b, 15, 2f, 11, 09, 0d, 15, 26, 2b, 15, 2f, 11, 09, 0d, 19, 1d, 57, 21, 19, 1d, 53, 25, 57, 21, 19, 1d, 25, 4e, 53, 25, 57, 21, 19, 1d, 29, 2d, 7f, 31, 29, 2d, 7b, 35, 7f, 31, 29, 2d, 35, 76, 7b, 35, 7f, 31, 29, 2d, 39, 3d, 8b, 01, 41, 39, 3d, 19, 01, 01, 01, 08, 0f, 05, 08, 10, 03, 06, 02, 03, 06, 00, 07, 07, 01, 0b, 00, 11, 11, 03, 1b, 00, 1d, 2f, 01, 0e, 00, 10, 2b, 02, 08, 00, 0f, 15, 00, 10, 03, 06, 26, 03, 06, 00, 07, 23, 01, 0b, 00, 11, 21, 01, 1b, 00, 1d, 57, 01, 0e, 00, 10, 53, 02, 08, 00, 0f, 25, 00, 10, 03, 06, 4e, 03, 06, 00, 07, 4b, 01, 0b, 00, 11, 31, 01, 1b, 00, 1d, 7f, 01, 0e, 00, 10, 7b, 02, 08, 00, 0f, 35, 00, 10, 03, 06, 76, 03, 06, 00, 07, 73, 01, 0b, 00, 11, 41, 01, 1b, 00, 1d, 8b, 01, 01, 0e, 00, 10, 87, 01, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 35
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(11, Add), rhs = Counter(4)
+- expression 4 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 5 operands: lhs = Expression(10, Add), rhs = Counter(5)
+- expression 6 operands: lhs = Expression(11, Add), rhs = Counter(4)
+- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 8 operands: lhs = Counter(5), rhs = Expression(9, Sub)
+- expression 9 operands: lhs = Expression(10, Add), rhs = Counter(5)
+- expression 10 operands: lhs = Expression(11, Add), rhs = Counter(4)
+- expression 11 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 12 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 13 operands: lhs = Expression(21, Add), rhs = Counter(8)
+- expression 14 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 15 operands: lhs = Expression(20, Add), rhs = Counter(9)
+- expression 16 operands: lhs = Expression(21, Add), rhs = Counter(8)
+- expression 17 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 18 operands: lhs = Counter(9), rhs = Expression(19, Sub)
+- expression 19 operands: lhs = Expression(20, Add), rhs = Counter(9)
+- expression 20 operands: lhs = Expression(21, Add), rhs = Counter(8)
+- expression 21 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 22 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 23 operands: lhs = Expression(31, Add), rhs = Counter(12)
+- expression 24 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 25 operands: lhs = Expression(30, Add), rhs = Counter(13)
+- expression 26 operands: lhs = Expression(31, Add), rhs = Counter(12)
+- expression 27 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 28 operands: lhs = Counter(13), rhs = Expression(29, Sub)
+- expression 29 operands: lhs = Expression(30, Add), rhs = Counter(13)
+- expression 30 operands: lhs = Expression(31, Add), rhs = Counter(12)
+- expression 31 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 32 operands: lhs = Counter(14), rhs = Counter(15)
+- expression 33 operands: lhs = Expression(34, Add), rhs = Counter(16)
+- expression 34 operands: lhs = Counter(14), rhs = Counter(15)
+Number of file 0 mappings: 25
+- Code(Counter(0)) at (prev + 1, 1) to (start + 8, 15)
+- Code(Counter(1)) at (prev + 8, 16) to (start + 3, 6)
+- Code(Expression(0, Sub)) at (prev + 3, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = (c1 + (c0 - c1))
+- Code(Counter(4)) at (prev + 3, 27) to (start + 0, 29)
+- Code(Expression(11, Add)) at (prev + 1, 14) to (start + 0, 16)
+    = (c2 + c3)
+- Code(Expression(10, Add)) at (prev + 2, 8) to (start + 0, 15)
+    = ((c2 + c3) + c4)
+- Code(Counter(5)) at (prev + 0, 16) to (start + 3, 6)
+- Code(Expression(9, Sub)) at (prev + 3, 6) to (start + 0, 7)
+    = (((c2 + c3) + c4) - c5)
+- Code(Expression(8, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = (c5 + (((c2 + c3) + c4) - c5))
+- Code(Counter(8)) at (prev + 1, 27) to (start + 0, 29)
+- Code(Expression(21, Add)) at (prev + 1, 14) to (start + 0, 16)
+    = (c6 + c7)
+- Code(Expression(20, Add)) at (prev + 2, 8) to (start + 0, 15)
+    = ((c6 + c7) + c8)
+- Code(Counter(9)) at (prev + 0, 16) to (start + 3, 6)
+- Code(Expression(19, Sub)) at (prev + 3, 6) to (start + 0, 7)
+    = (((c6 + c7) + c8) - c9)
+- Code(Expression(18, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = (c9 + (((c6 + c7) + c8) - c9))
+- Code(Counter(12)) at (prev + 1, 27) to (start + 0, 29)
+- Code(Expression(31, Add)) at (prev + 1, 14) to (start + 0, 16)
+    = (c10 + c11)
+- Code(Expression(30, Add)) at (prev + 2, 8) to (start + 0, 15)
+    = ((c10 + c11) + c12)
+- Code(Counter(13)) at (prev + 0, 16) to (start + 3, 6)
+- Code(Expression(29, Sub)) at (prev + 3, 6) to (start + 0, 7)
+    = (((c10 + c11) + c12) - c13)
+- Code(Expression(28, Add)) at (prev + 1, 11) to (start + 0, 17)
+    = (c13 + (((c10 + c11) + c12) - c13))
+- Code(Counter(16)) at (prev + 1, 27) to (start + 0, 29)
+- Code(Expression(34, Add)) at (prev + 1, 14) to (start + 0, 16)
+    = (c14 + c15)
+- Code(Expression(33, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = ((c14 + c15) + c16)
+
diff --git a/tests/coverage-map/status-quo/match_or_pattern.rs b/tests/coverage-map/status-quo/match_or_pattern.rs
new file mode 100644
index 00000000000..ab7aee51d1b
--- /dev/null
+++ b/tests/coverage-map/status-quo/match_or_pattern.rs
@@ -0,0 +1,43 @@
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut a: u8 = 0;
+    let mut b: u8 = 0;
+    if is_true {
+        a = 2;
+        b = 0;
+    }
+    match (a, b) {
+        // Or patterns generate MIR `SwitchInt` with multiple targets to the same `BasicBlock`.
+        // This test confirms a fix for Issue #79569.
+        (0 | 1, 2 | 3) => {}
+        _ => {}
+    }
+    if is_true {
+        a = 0;
+        b = 0;
+    }
+    match (a, b) {
+        (0 | 1, 2 | 3) => {}
+        _ => {}
+    }
+    if is_true {
+        a = 2;
+        b = 2;
+    }
+    match (a, b) {
+        (0 | 1, 2 | 3) => {}
+        _ => {}
+    }
+    if is_true {
+        a = 0;
+        b = 2;
+    }
+    match (a, b) {
+        (0 | 1, 2 | 3) => {}
+        _ => {}
+    }
+}
diff --git a/tests/coverage-map/status-quo/nested_loops.cov-map b/tests/coverage-map/status-quo/nested_loops.cov-map
new file mode 100644
index 00000000000..35d92594e75
--- /dev/null
+++ b/tests/coverage-map/status-quo/nested_loops.cov-map
@@ -0,0 +1,51 @@
+Function name: nested_loops::main
+Raw bytes (115): 0x[01, 01, 17, 01, 57, 05, 09, 03, 0d, 4e, 53, 03, 0d, 15, 19, 4b, 09, 4e, 53, 03, 0d, 15, 19, 46, 05, 4b, 09, 4e, 53, 03, 0d, 15, 19, 42, 19, 46, 05, 4b, 09, 4e, 53, 03, 0d, 15, 19, 05, 09, 11, 0d, 0d, 01, 01, 01, 02, 1b, 03, 04, 13, 00, 20, 4e, 01, 0d, 01, 18, 4b, 02, 12, 00, 17, 46, 01, 10, 00, 16, 05, 01, 11, 00, 16, 42, 01, 0e, 03, 16, 3e, 04, 11, 01, 1b, 11, 02, 15, 00, 21, 15, 01, 18, 02, 12, 19, 03, 0e, 00, 0f, 57, 02, 09, 00, 17, 5b, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 23
+- expression 0 operands: lhs = Counter(0), rhs = Expression(21, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(19, Sub), rhs = Expression(20, Add)
+- expression 4 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 5 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 6 operands: lhs = Expression(18, Add), rhs = Counter(2)
+- expression 7 operands: lhs = Expression(19, Sub), rhs = Expression(20, Add)
+- expression 8 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 9 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 10 operands: lhs = Expression(17, Sub), rhs = Counter(1)
+- expression 11 operands: lhs = Expression(18, Add), rhs = Counter(2)
+- expression 12 operands: lhs = Expression(19, Sub), rhs = Expression(20, Add)
+- expression 13 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 14 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 15 operands: lhs = Expression(16, Sub), rhs = Counter(6)
+- expression 16 operands: lhs = Expression(17, Sub), rhs = Counter(1)
+- expression 17 operands: lhs = Expression(18, Add), rhs = Counter(2)
+- expression 18 operands: lhs = Expression(19, Sub), rhs = Expression(20, Add)
+- expression 19 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 20 operands: lhs = Counter(5), rhs = Counter(6)
+- expression 21 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 22 operands: lhs = Counter(4), rhs = Counter(3)
+Number of file 0 mappings: 13
+- Code(Counter(0)) at (prev + 1, 1) to (start + 2, 27)
+- Code(Expression(0, Add)) at (prev + 4, 19) to (start + 0, 32)
+    = (c0 + (c1 + c2))
+- Code(Expression(19, Sub)) at (prev + 1, 13) to (start + 1, 24)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Expression(18, Add)) at (prev + 2, 18) to (start + 0, 23)
+    = (((c0 + (c1 + c2)) - c3) + (c5 + c6))
+- Code(Expression(17, Sub)) at (prev + 1, 16) to (start + 0, 22)
+    = ((((c0 + (c1 + c2)) - c3) + (c5 + c6)) - c2)
+- Code(Counter(1)) at (prev + 1, 17) to (start + 0, 22)
+- Code(Expression(16, Sub)) at (prev + 1, 14) to (start + 3, 22)
+    = (((((c0 + (c1 + c2)) - c3) + (c5 + c6)) - c2) - c1)
+- Code(Expression(15, Sub)) at (prev + 4, 17) to (start + 1, 27)
+    = ((((((c0 + (c1 + c2)) - c3) + (c5 + c6)) - c2) - c1) - c6)
+- Code(Counter(4)) at (prev + 2, 21) to (start + 0, 33)
+- Code(Counter(5)) at (prev + 1, 24) to (start + 2, 18)
+- Code(Counter(6)) at (prev + 3, 14) to (start + 0, 15)
+- Code(Expression(21, Add)) at (prev + 2, 9) to (start + 0, 23)
+    = (c1 + c2)
+- Code(Expression(22, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c4 + c3)
+
diff --git a/tests/coverage-map/status-quo/nested_loops.rs b/tests/coverage-map/status-quo/nested_loops.rs
new file mode 100644
index 00000000000..4c7c7842796
--- /dev/null
+++ b/tests/coverage-map/status-quo/nested_loops.rs
@@ -0,0 +1,25 @@
+fn main() {
+    let is_true = std::env::args().len() == 1;
+    let mut countdown = 10;
+
+    'outer: while countdown > 0 {
+        let mut a = 100;
+        let mut b = 100;
+        for _ in 0..50 {
+            if a < 30 {
+                break;
+            }
+            a -= 5;
+            b -= 5;
+            if b < 90 {
+                a -= 10;
+                if is_true {
+                    break 'outer;
+                } else {
+                    a -= 2;
+                }
+            }
+        }
+        countdown -= 1;
+    }
+}
diff --git a/tests/coverage-map/status-quo/no_cov_crate.cov-map b/tests/coverage-map/status-quo/no_cov_crate.cov-map
new file mode 100644
index 00000000000..7ab5995dc28
--- /dev/null
+++ b/tests/coverage-map/status-quo/no_cov_crate.cov-map
@@ -0,0 +1,78 @@
+Function name: no_cov_crate::add_coverage_1
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 14, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 20, 1) to (start + 2, 2)
+
+Function name: no_cov_crate::add_coverage_2
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 18, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 24, 1) to (start + 2, 2)
+
+Function name: no_cov_crate::add_coverage_not_called (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 1d, 01, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 29, 1) to (start + 2, 2)
+
+Function name: no_cov_crate::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 4d, 01, 0b, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 77, 1) to (start + 11, 2)
+
+Function name: no_cov_crate::nested_fns::outer
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 31, 05, 0c, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 49, 5) to (start + 12, 6)
+
+Function name: no_cov_crate::nested_fns::outer_both_covered
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 3f, 05, 0b, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 63, 5) to (start + 11, 6)
+
+Function name: no_cov_crate::nested_fns::outer_both_covered::inner
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 43, 09, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 07, 03, 09, 00, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 67, 9) to (start + 1, 23)
+- Code(Counter(1)) at (prev + 1, 24) to (start + 2, 14)
+- Code(Expression(0, Sub)) at (prev + 2, 20) to (start + 2, 14)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 3, 9) to (start + 0, 10)
+    = (c1 + (c0 - c1))
+
+Function name: no_cov_crate::nested_fns::outer_not_covered::inner
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 26, 09, 01, 17, 05, 01, 18, 02, 0e, 02, 02, 14, 02, 0e, 07, 03, 09, 00, 0a]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 38, 9) to (start + 1, 23)
+- Code(Counter(1)) at (prev + 1, 24) to (start + 2, 14)
+- Code(Expression(0, Sub)) at (prev + 2, 20) to (start + 2, 14)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 3, 9) to (start + 0, 10)
+    = (c1 + (c0 - c1))
+
diff --git a/tests/coverage-map/status-quo/no_cov_crate.rs b/tests/coverage-map/status-quo/no_cov_crate.rs
new file mode 100644
index 00000000000..e12e4bc55e3
--- /dev/null
+++ b/tests/coverage-map/status-quo/no_cov_crate.rs
@@ -0,0 +1,88 @@
+// Enables `coverage(off)` on the entire crate
+#![feature(coverage_attribute)]
+
+#[coverage(off)]
+fn do_not_add_coverage_1() {
+    println!("called but not covered");
+}
+
+fn do_not_add_coverage_2() {
+    #![coverage(off)]
+    println!("called but not covered");
+}
+
+#[coverage(off)]
+#[allow(dead_code)]
+fn do_not_add_coverage_not_called() {
+    println!("not called and not covered");
+}
+
+fn add_coverage_1() {
+    println!("called and covered");
+}
+
+fn add_coverage_2() {
+    println!("called and covered");
+}
+
+#[allow(dead_code)]
+fn add_coverage_not_called() {
+    println!("not called but covered");
+}
+
+// FIXME: These test-cases illustrate confusing results of nested functions.
+// See https://github.com/rust-lang/rust/issues/93319
+mod nested_fns {
+    #[coverage(off)]
+    pub fn outer_not_covered(is_true: bool) {
+        fn inner(is_true: bool) {
+            if is_true {
+                println!("called and covered");
+            } else {
+                println!("absolutely not covered");
+            }
+        }
+        println!("called but not covered");
+        inner(is_true);
+    }
+
+    pub fn outer(is_true: bool) {
+        println!("called and covered");
+        inner_not_covered(is_true);
+
+        #[coverage(off)]
+        fn inner_not_covered(is_true: bool) {
+            if is_true {
+                println!("called but not covered");
+            } else {
+                println!("absolutely not covered");
+            }
+        }
+    }
+
+    pub fn outer_both_covered(is_true: bool) {
+        println!("called and covered");
+        inner(is_true);
+
+        fn inner(is_true: bool) {
+            if is_true {
+                println!("called and covered");
+            } else {
+                println!("absolutely not covered");
+            }
+        }
+    }
+}
+
+fn main() {
+    let is_true = std::env::args().len() == 1;
+
+    do_not_add_coverage_1();
+    do_not_add_coverage_2();
+    add_coverage_1();
+    add_coverage_2();
+
+    nested_fns::outer_not_covered(is_true);
+    nested_fns::outer(is_true);
+    nested_fns::outer_both_covered(is_true);
+}
diff --git a/tests/coverage-map/status-quo/overflow.cov-map b/tests/coverage-map/status-quo/overflow.cov-map
new file mode 100644
index 00000000000..bfffd9b2ab5
--- /dev/null
+++ b/tests/coverage-map/status-quo/overflow.cov-map
@@ -0,0 +1,43 @@
+Function name: overflow::main
+Raw bytes (65): 0x[01, 01, 08, 01, 1b, 05, 1f, 09, 0d, 03, 11, 16, 05, 03, 11, 05, 1f, 09, 0d, 09, 01, 0f, 01, 01, 1b, 03, 02, 0b, 00, 18, 16, 01, 0c, 00, 1a, 05, 00, 1b, 03, 0a, 12, 03, 13, 00, 20, 09, 00, 21, 03, 0a, 0d, 03, 0a, 00, 0b, 1b, 01, 09, 00, 17, 11, 02, 05, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 8
+- expression 0 operands: lhs = Counter(0), rhs = Expression(6, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(7, Add)
+- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(5, Sub), rhs = Counter(1)
+- expression 5 operands: lhs = Expression(0, Add), rhs = Counter(4)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(7, Add)
+- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 15, 1) to (start + 1, 27)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 24)
+    = (c0 + (c1 + (c2 + c3)))
+- Code(Expression(5, Sub)) at (prev + 1, 12) to (start + 0, 26)
+    = ((c0 + (c1 + (c2 + c3))) - c4)
+- Code(Counter(1)) at (prev + 0, 27) to (start + 3, 10)
+- Code(Expression(4, Sub)) at (prev + 3, 19) to (start + 0, 32)
+    = (((c0 + (c1 + (c2 + c3))) - c4) - c1)
+- Code(Counter(2)) at (prev + 0, 33) to (start + 3, 10)
+- Code(Counter(3)) at (prev + 3, 10) to (start + 0, 11)
+- Code(Expression(6, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (c1 + (c2 + c3))
+- Code(Counter(4)) at (prev + 2, 5) to (start + 1, 2)
+
+Function name: overflow::might_overflow
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 04, 01, 01, 12, 05, 01, 13, 02, 06, 02, 02, 06, 00, 07, 07, 01, 09, 05, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 4, 1) to (start + 1, 18)
+- Code(Counter(1)) at (prev + 1, 19) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 9) to (start + 5, 2)
+    = (c1 + (c0 - c1))
+
diff --git a/tests/coverage-map/status-quo/overflow.rs b/tests/coverage-map/status-quo/overflow.rs
new file mode 100644
index 00000000000..bbb65c1b35d
--- /dev/null
+++ b/tests/coverage-map/status-quo/overflow.rs
@@ -0,0 +1,63 @@
+#![allow(unused_assignments)]
+// failure-status: 101
+
+fn might_overflow(to_add: u32) -> u32 {
+    if to_add > 5 {
+        println!("this will probably overflow");
+    }
+    let add_to = u32::MAX - 5;
+    println!("does {} + {} overflow?", add_to, to_add);
+    let result = to_add + add_to;
+    println!("continuing after overflow check");
+    result
+}
+
+fn main() -> Result<(), u8> {
+    let mut countdown = 10;
+    while countdown > 0 {
+        if countdown == 1 {
+            let result = might_overflow(10);
+            println!("Result: {}", result);
+        } else if countdown < 5 {
+            let result = might_overflow(1);
+            println!("Result: {}", result);
+        }
+        countdown -= 1;
+    }
+    Ok(())
+}
+
+// Notes:
+//   1. Compare this program and its coverage results to those of the very similar test `assert.rs`,
+//      and similar tests `panic_unwind.rs`, abort.rs` and `try_error_result.rs`.
+//   2. This test confirms the coverage generated when a program passes or fails a
+//      compiler-generated `TerminatorKind::Assert` (based on an overflow check, in this case).
+//   3. Similar to how the coverage instrumentation handles `TerminatorKind::Call`,
+//      compiler-generated assertion failures are assumed to be a symptom of a program bug, not
+//      expected behavior. To simplify the coverage graphs and keep instrumented programs as
+//      small and fast as possible, `Assert` terminators are assumed to always succeed, and
+//      therefore are considered "non-branching" terminators. So, an `Assert` terminator does not
+//      get its own coverage counter.
+//   4. After an unhandled panic or failed Assert, coverage results may not always be intuitive.
+//      In this test, the final count for the statements after the `if` block in `might_overflow()`
+//      is 4, even though the lines after `to_add + add_to` were executed only 3 times. Depending
+//      on the MIR graph and the structure of the code, this count could have been 3 (which might
+//      have been valid for the overflowed add `+`, but should have been 4 for the lines before
+//      the overflow. The reason for this potential uncertainty is, a `CounterKind` is incremented
+//      via StatementKind::Counter at the end of the block, but (as in the case in this test),
+//      a CounterKind::Expression is always evaluated. In this case, the expression was based on
+//      a `Counter` incremented as part of the evaluation of the `if` expression, which was
+//      executed, and counted, 4 times, before reaching the overflow add.
+
+// If the program did not overflow, the coverage for `might_overflow()` would look like this:
+//
+//     4|       |fn might_overflow(to_add: u32) -> u32 {
+//     5|      4|    if to_add > 5 {
+//     6|      0|        println!("this will probably overflow");
+//     7|      4|    }
+//     8|      4|    let add_to = u32::MAX - 5;
+//     9|      4|    println!("does {} + {} overflow?", add_to, to_add);
+//    10|      4|    let result = to_add + add_to;
+//    11|      4|    println!("continuing after overflow check");
+//    12|      4|    result
+//    13|      4|}
diff --git a/tests/coverage-map/status-quo/panic_unwind.cov-map b/tests/coverage-map/status-quo/panic_unwind.cov-map
new file mode 100644
index 00000000000..f6089ce55ae
--- /dev/null
+++ b/tests/coverage-map/status-quo/panic_unwind.cov-map
@@ -0,0 +1,40 @@
+Function name: panic_unwind::main
+Raw bytes (65): 0x[01, 01, 08, 01, 1b, 05, 1f, 09, 0d, 03, 11, 16, 05, 03, 11, 05, 1f, 09, 0d, 09, 01, 0d, 01, 01, 1b, 03, 02, 0b, 00, 18, 16, 01, 0c, 00, 1a, 05, 00, 1b, 02, 0a, 12, 02, 13, 00, 20, 09, 00, 21, 02, 0a, 0d, 02, 0a, 00, 0b, 1b, 01, 09, 00, 17, 11, 02, 05, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 8
+- expression 0 operands: lhs = Counter(0), rhs = Expression(6, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(7, Add)
+- expression 2 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(5, Sub), rhs = Counter(1)
+- expression 5 operands: lhs = Expression(0, Add), rhs = Counter(4)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(7, Add)
+- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 13, 1) to (start + 1, 27)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 24)
+    = (c0 + (c1 + (c2 + c3)))
+- Code(Expression(5, Sub)) at (prev + 1, 12) to (start + 0, 26)
+    = ((c0 + (c1 + (c2 + c3))) - c4)
+- Code(Counter(1)) at (prev + 0, 27) to (start + 2, 10)
+- Code(Expression(4, Sub)) at (prev + 2, 19) to (start + 0, 32)
+    = (((c0 + (c1 + (c2 + c3))) - c4) - c1)
+- Code(Counter(2)) at (prev + 0, 33) to (start + 2, 10)
+- Code(Counter(3)) at (prev + 2, 10) to (start + 0, 11)
+- Code(Expression(6, Add)) at (prev + 1, 9) to (start + 0, 23)
+    = (c1 + (c2 + c3))
+- Code(Counter(4)) at (prev + 2, 5) to (start + 1, 2)
+
+Function name: panic_unwind::might_panic
+Raw bytes (21): 0x[01, 01, 01, 01, 05, 03, 01, 04, 01, 01, 14, 05, 02, 09, 01, 19, 02, 02, 0c, 03, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 3
+- Code(Counter(0)) at (prev + 4, 1) to (start + 1, 20)
+- Code(Counter(1)) at (prev + 2, 9) to (start + 1, 25)
+- Code(Expression(0, Sub)) at (prev + 2, 12) to (start + 3, 2)
+    = (c0 - c1)
+
diff --git a/tests/coverage-map/status-quo/panic_unwind.rs b/tests/coverage-map/status-quo/panic_unwind.rs
new file mode 100644
index 00000000000..638d2eb6aaa
--- /dev/null
+++ b/tests/coverage-map/status-quo/panic_unwind.rs
@@ -0,0 +1,31 @@
+#![allow(unused_assignments)]
+// failure-status: 101
+
+fn might_panic(should_panic: bool) {
+    if should_panic {
+        println!("panicking...");
+        panic!("panics");
+    } else {
+        println!("Don't Panic");
+    }
+}
+
+fn main() -> Result<(), u8> {
+    let mut countdown = 10;
+    while countdown > 0 {
+        if countdown == 1 {
+            might_panic(true);
+        } else if countdown < 5 {
+            might_panic(false);
+        }
+        countdown -= 1;
+    }
+    Ok(())
+}
+
+// Notes:
+//   1. Compare this program and its coverage results to those of the similar tests `abort.rs` and
+//      `try_error_result.rs`.
+//   2. Since the `panic_unwind.rs` test is allowed to unwind, it is also allowed to execute the
+//      normal program exit cleanup, including writing out the current values of the coverage
+//      counters.
diff --git a/tests/coverage-map/status-quo/partial_eq.cov-map b/tests/coverage-map/status-quo/partial_eq.cov-map
new file mode 100644
index 00000000000..dd61cd77ab6
--- /dev/null
+++ b/tests/coverage-map/status-quo/partial_eq.cov-map
@@ -0,0 +1,64 @@
+Function name: <partial_eq::Version as core::clone::Clone>::clone (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 04, 0a, 00, 0f]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 4, 10) to (start + 0, 15)
+
+Function name: <partial_eq::Version as core::cmp::Ord>::cmp (unused)
+Raw bytes (14): 0x[01, 01, 00, 02, 01, 04, 33, 00, 34, 00, 00, 35, 00, 36]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 4, 51) to (start + 0, 52)
+- Code(Zero) at (prev + 0, 53) to (start + 0, 54)
+
+Function name: <partial_eq::Version as core::cmp::PartialEq>::eq (unused)
+Raw bytes (14): 0x[01, 01, 00, 02, 01, 04, 18, 00, 19, 00, 00, 20, 00, 21]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 4, 24) to (start + 0, 25)
+- Code(Zero) at (prev + 0, 32) to (start + 0, 33)
+
+Function name: <partial_eq::Version as core::cmp::PartialOrd>::partial_cmp
+Raw bytes (22): 0x[01, 01, 04, 07, 0b, 05, 09, 0f, 15, 0d, 11, 02, 01, 04, 27, 00, 28, 03, 00, 30, 00, 31]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 4
+- expression 0 operands: lhs = Expression(1, Add), rhs = Expression(2, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(3, Add), rhs = Counter(5)
+- expression 3 operands: lhs = Counter(3), rhs = Counter(4)
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 4, 39) to (start + 0, 40)
+- Code(Expression(0, Add)) at (prev + 0, 48) to (start + 0, 49)
+    = ((c1 + c2) + ((c3 + c4) + c5))
+
+Function name: <partial_eq::Version as core::fmt::Debug>::fmt
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 04, 11, 00, 16]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 4, 17) to (start + 0, 22)
+
+Function name: <partial_eq::Version>::new
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0c, 05, 06, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 12, 5) to (start + 6, 6)
+
+Function name: partial_eq::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 15, 01, 05, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 21, 1) to (start + 5, 2)
+
diff --git a/tests/coverage-map/status-quo/partial_eq.rs b/tests/coverage-map/status-quo/partial_eq.rs
new file mode 100644
index 00000000000..dd8b42c18ce
--- /dev/null
+++ b/tests/coverage-map/status-quo/partial_eq.rs
@@ -0,0 +1,46 @@
+// This test confirms an earlier problem was resolved, supporting the MIR graph generated by the
+// structure of this test.
+
+#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub struct Version {
+    major: usize,
+    minor: usize,
+    patch: usize,
+}
+
+impl Version {
+    pub fn new(major: usize, minor: usize, patch: usize) -> Self {
+        Self {
+            major,
+            minor,
+            patch,
+        }
+    }
+}
+
+fn main() {
+    let version_3_2_1 = Version::new(3, 2, 1);
+    let version_3_3_0 = Version::new(3, 3, 0);
+
+    println!("{:?} < {:?} = {}", version_3_2_1, version_3_3_0, version_3_2_1 < version_3_3_0);
+}
+
+/*
+
+This test verifies a bug was fixed that otherwise generated this error:
+
+thread 'rustc' panicked at 'No counters provided the source_hash for function:
+    Instance {
+        def: Item(WithOptConstParam {
+            did: DefId(0:101 ~ autocfg[c44a]::version::{impl#2}::partial_cmp),
+            const_param_did: None
+        }),
+        args: []
+    }'
+The `PartialOrd` derived by `Version` happened to generate a MIR that generated coverage
+without a code region associated with any `Counter`. Code regions were associated with at least
+one expression, which is allowed, but the `function_source_hash` was only passed to the codegen
+(coverage mapgen) phase from a `Counter`s code region. A new method was added to pass the
+`function_source_hash` without a code region, if necessary.
+
+*/
diff --git a/tests/coverage-map/status-quo/simple_loop.cov-map b/tests/coverage-map/status-quo/simple_loop.cov-map
new file mode 100644
index 00000000000..eb49c2324cc
--- /dev/null
+++ b/tests/coverage-map/status-quo/simple_loop.cov-map
@@ -0,0 +1,28 @@
+Function name: simple_loop::main
+Raw bytes (59): 0x[01, 01, 0a, 01, 05, 27, 09, 05, 02, 23, 09, 27, 09, 05, 02, 1e, 00, 23, 09, 27, 09, 05, 02, 07, 01, 03, 01, 09, 10, 05, 0a, 05, 05, 06, 02, 05, 06, 00, 07, 23, 05, 0d, 02, 0e, 1e, 04, 0d, 00, 12, 09, 02, 0a, 03, 0a, 1b, 06, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 10
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(9, Add), rhs = Counter(2)
+- expression 2 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 3 operands: lhs = Expression(8, Add), rhs = Counter(2)
+- expression 4 operands: lhs = Expression(9, Add), rhs = Counter(2)
+- expression 5 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 6 operands: lhs = Expression(7, Sub), rhs = Zero
+- expression 7 operands: lhs = Expression(8, Add), rhs = Counter(2)
+- expression 8 operands: lhs = Expression(9, Add), rhs = Counter(2)
+- expression 9 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 7
+- Code(Counter(0)) at (prev + 3, 1) to (start + 9, 16)
+- Code(Counter(1)) at (prev + 10, 5) to (start + 5, 6)
+- Code(Expression(0, Sub)) at (prev + 5, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(8, Add)) at (prev + 5, 13) to (start + 2, 14)
+    = ((c1 + (c0 - c1)) + c2)
+- Code(Expression(7, Sub)) at (prev + 4, 13) to (start + 0, 18)
+    = (((c1 + (c0 - c1)) + c2) - c2)
+- Code(Counter(2)) at (prev + 2, 10) to (start + 3, 10)
+- Code(Expression(6, Add)) at (prev + 6, 1) to (start + 0, 2)
+    = ((((c1 + (c0 - c1)) + c2) - c2) + Zero)
+
diff --git a/tests/coverage-map/status-quo/simple_loop.rs b/tests/coverage-map/status-quo/simple_loop.rs
new file mode 100644
index 00000000000..6f7f23475b8
--- /dev/null
+++ b/tests/coverage-map/status-quo/simple_loop.rs
@@ -0,0 +1,35 @@
+#![allow(unused_assignments)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 0;
+
+    if
+        is_true
+    {
+        countdown
+        =
+            10
+        ;
+    }
+
+    loop
+    {
+        if
+            countdown
+                ==
+            0
+        {
+            break
+            ;
+        }
+        countdown
+        -=
+        1
+        ;
+    }
+}
diff --git a/tests/coverage-map/status-quo/simple_match.cov-map b/tests/coverage-map/status-quo/simple_match.cov-map
new file mode 100644
index 00000000000..d5389f04b26
--- /dev/null
+++ b/tests/coverage-map/status-quo/simple_match.cov-map
@@ -0,0 +1,36 @@
+Function name: simple_match::main
+Raw bytes (82): 0x[01, 01, 0e, 01, 05, 2f, 33, 05, 02, 09, 0d, 2b, 11, 2f, 33, 05, 02, 09, 0d, 26, 00, 2b, 11, 2f, 33, 05, 02, 09, 0d, 09, 00, 0a, 01, 03, 01, 07, 0f, 05, 07, 10, 02, 06, 02, 02, 06, 00, 07, 2b, 05, 09, 00, 0d, 26, 05, 0d, 00, 16, 09, 02, 0d, 00, 0e, 23, 02, 11, 02, 12, 37, 04, 0d, 07, 0e, 0d, 0a, 0d, 00, 0f, 11, 03, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 14
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(11, Add), rhs = Expression(12, Add)
+- expression 2 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 3 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 4 operands: lhs = Expression(10, Add), rhs = Counter(4)
+- expression 5 operands: lhs = Expression(11, Add), rhs = Expression(12, Add)
+- expression 6 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 7 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 8 operands: lhs = Expression(9, Sub), rhs = Zero
+- expression 9 operands: lhs = Expression(10, Add), rhs = Counter(4)
+- expression 10 operands: lhs = Expression(11, Add), rhs = Expression(12, Add)
+- expression 11 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+- expression 12 operands: lhs = Counter(2), rhs = Counter(3)
+- expression 13 operands: lhs = Counter(2), rhs = Zero
+Number of file 0 mappings: 10
+- Code(Counter(0)) at (prev + 3, 1) to (start + 7, 15)
+- Code(Counter(1)) at (prev + 7, 16) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(10, Add)) at (prev + 5, 9) to (start + 0, 13)
+    = ((c1 + (c0 - c1)) + (c2 + c3))
+- Code(Expression(9, Sub)) at (prev + 5, 13) to (start + 0, 22)
+    = (((c1 + (c0 - c1)) + (c2 + c3)) - c4)
+- Code(Counter(2)) at (prev + 2, 13) to (start + 0, 14)
+- Code(Expression(8, Add)) at (prev + 2, 17) to (start + 2, 18)
+    = ((((c1 + (c0 - c1)) + (c2 + c3)) - c4) + Zero)
+- Code(Expression(13, Add)) at (prev + 4, 13) to (start + 7, 14)
+    = (c2 + Zero)
+- Code(Counter(3)) at (prev + 10, 13) to (start + 0, 15)
+- Code(Counter(4)) at (prev + 3, 1) to (start + 0, 2)
+
diff --git a/tests/coverage-map/status-quo/simple_match.rs b/tests/coverage-map/status-quo/simple_match.rs
new file mode 100644
index 00000000000..be99e59a826
--- /dev/null
+++ b/tests/coverage-map/status-quo/simple_match.rs
@@ -0,0 +1,43 @@
+#![allow(unused_assignments, unused_variables)]
+
+fn main() {
+    // Initialize test constants in a way that cannot be determined at compile time, to ensure
+    // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
+    // dependent conditions.
+    let is_true = std::env::args().len() == 1;
+
+    let mut countdown = 1;
+    if is_true {
+        countdown = 0;
+    }
+
+    for
+        _
+    in
+        0..2
+    {
+        let z
+        ;
+        match
+            countdown
+        {
+            x
+            if
+                x
+                    <
+                1
+            =>
+            {
+                z = countdown
+                ;
+                let y = countdown
+                ;
+                countdown = 10
+                ;
+            }
+            _
+            =>
+            {}
+        }
+    }
+}
diff --git a/tests/coverage-map/status-quo/sort_groups.cov-map b/tests/coverage-map/status-quo/sort_groups.cov-map
new file mode 100644
index 00000000000..7156a66cf89
--- /dev/null
+++ b/tests/coverage-map/status-quo/sort_groups.cov-map
@@ -0,0 +1,68 @@
+Function name: sort_groups::generic_fn::<&str>
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
+- Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: sort_groups::generic_fn::<()>
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
+- Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: sort_groups::generic_fn::<i32>
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 11, 01, 01, 0c, 05, 01, 0d, 02, 06, 02, 02, 06, 00, 07, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 17, 1) to (start + 1, 12)
+- Code(Counter(1)) at (prev + 1, 13) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: sort_groups::main
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 06, 01, 04, 0d, 00, 04, 0e, 02, 06, 02, 02, 06, 00, 07, 07, 01, 05, 02, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 6, 1) to (start + 4, 13)
+- Code(Zero) at (prev + 4, 14) to (start + 2, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 6) to (start + 0, 7)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 5) to (start + 2, 2)
+    = (c1 + (c0 - c1))
+
+Function name: sort_groups::other_fn
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 17, 01, 00, 11]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 23, 1) to (start + 0, 17)
+
diff --git a/tests/coverage-map/status-quo/sort_groups.rs b/tests/coverage-map/status-quo/sort_groups.rs
new file mode 100644
index 00000000000..f89f9f3ec61
--- /dev/null
+++ b/tests/coverage-map/status-quo/sort_groups.rs
@@ -0,0 +1,23 @@
+// compile-flags: --edition=2021
+
+// Demonstrate that `sort_subviews.py` can sort instantiation groups into a
+// predictable order, while preserving their heterogeneous contents.
+
+fn main() {
+    let cond = std::env::args().len() > 1;
+    generic_fn::<()>(cond);
+    generic_fn::<&'static str>(!cond);
+    if false {
+        generic_fn::<char>(cond);
+    }
+    generic_fn::<i32>(cond);
+    other_fn();
+}
+
+fn generic_fn<T>(cond: bool) {
+    if cond {
+        println!("{}", std::any::type_name::<T>());
+    }
+}
+
+fn other_fn() {}
diff --git a/tests/coverage-map/status-quo/test_harness.cov-map b/tests/coverage-map/status-quo/test_harness.cov-map
new file mode 100644
index 00000000000..b0e955dd142
--- /dev/null
+++ b/tests/coverage-map/status-quo/test_harness.cov-map
@@ -0,0 +1,24 @@
+Function name: test_harness::my_test
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0a, 01, 00, 10]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 10, 1) to (start + 0, 16)
+
+Function name: test_harness::my_test::{closure#0}
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 09, 01, 00, 08]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 9, 1) to (start + 0, 8)
+
+Function name: test_harness::unused (unused)
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 07, 01, 00, 0f]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 7, 1) to (start + 0, 15)
+
diff --git a/tests/coverage-map/status-quo/test_harness.rs b/tests/coverage-map/status-quo/test_harness.rs
new file mode 100644
index 00000000000..12a755734c1
--- /dev/null
+++ b/tests/coverage-map/status-quo/test_harness.rs
@@ -0,0 +1,10 @@
+// Verify that the entry point injected by the test harness doesn't cause
+// weird artifacts in the coverage report (e.g. issue #10749).
+
+// compile-flags: --test
+
+#[allow(dead_code)]
+fn unused() {}
+
+#[test]
+fn my_test() {}
diff --git a/tests/coverage-map/status-quo/tight_inf_loop.cov-map b/tests/coverage-map/status-quo/tight_inf_loop.cov-map
new file mode 100644
index 00000000000..76884212c14
--- /dev/null
+++ b/tests/coverage-map/status-quo/tight_inf_loop.cov-map
@@ -0,0 +1,12 @@
+Function name: tight_inf_loop::main
+Raw bytes (21): 0x[01, 01, 01, 01, 05, 03, 01, 01, 01, 01, 0d, 00, 02, 09, 00, 10, 02, 01, 06, 01, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 1
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+Number of file 0 mappings: 3
+- Code(Counter(0)) at (prev + 1, 1) to (start + 1, 13)
+- Code(Zero) at (prev + 2, 9) to (start + 0, 16)
+- Code(Expression(0, Sub)) at (prev + 1, 6) to (start + 1, 2)
+    = (c0 - c1)
+
diff --git a/tests/coverage-map/status-quo/tight_inf_loop.rs b/tests/coverage-map/status-quo/tight_inf_loop.rs
new file mode 100644
index 00000000000..cef99027aaa
--- /dev/null
+++ b/tests/coverage-map/status-quo/tight_inf_loop.rs
@@ -0,0 +1,5 @@
+fn main() {
+    if false {
+        loop {}
+    }
+}
diff --git a/tests/coverage-map/status-quo/try_error_result.cov-map b/tests/coverage-map/status-quo/try_error_result.cov-map
new file mode 100644
index 00000000000..b52e78d1195
--- /dev/null
+++ b/tests/coverage-map/status-quo/try_error_result.cov-map
@@ -0,0 +1,226 @@
+Function name: <try_error_result::Thing1>::get_thing_2
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 28, 05, 01, 18, 05, 02, 0d, 00, 14, 02, 02, 0d, 00, 1a, 07, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 40, 5) to (start + 1, 24)
+- Code(Counter(1)) at (prev + 2, 13) to (start + 0, 20)
+- Code(Expression(0, Sub)) at (prev + 2, 13) to (start + 0, 26)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (c1 + (c0 - c1))
+
+Function name: <try_error_result::Thing2>::call
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 33, 05, 01, 18, 05, 02, 0d, 00, 14, 02, 02, 0d, 00, 13, 07, 02, 05, 00, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 51, 5) to (start + 1, 24)
+- Code(Counter(1)) at (prev + 2, 13) to (start + 0, 20)
+- Code(Expression(0, Sub)) at (prev + 2, 13) to (start + 0, 19)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 2, 5) to (start + 0, 6)
+    = (c1 + (c0 - c1))
+
+Function name: try_error_result::call
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 04, 01, 01, 14, 05, 02, 09, 00, 10, 02, 02, 09, 00, 0f, 07, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 4, 1) to (start + 1, 20)
+- Code(Counter(1)) at (prev + 2, 9) to (start + 0, 16)
+- Code(Expression(0, Sub)) at (prev + 2, 9) to (start + 0, 15)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: try_error_result::main
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 05, 02, 04, 01, 70, 01, 02, 0c, 05, 03, 05, 00, 06, 02, 02, 05, 00, 0b, 07, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Counter(1), rhs = Expression(0, Sub)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 112, 1) to (start + 2, 12)
+- Code(Counter(1)) at (prev + 3, 5) to (start + 0, 6)
+- Code(Expression(0, Sub)) at (prev + 2, 5) to (start + 0, 11)
+    = (c0 - c1)
+- Code(Expression(1, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = (c1 + (c0 - c1))
+
+Function name: try_error_result::test1
+Raw bytes (77): 0x[01, 01, 09, 01, 07, 05, 09, 03, 0d, 1d, 11, 16, 1d, 03, 0d, 1f, 0d, 11, 23, 15, 19, 0b, 01, 0c, 01, 02, 17, 03, 07, 09, 00, 0e, 16, 02, 09, 04, 1a, 1d, 06, 0d, 00, 29, 11, 00, 29, 00, 2a, 0e, 01, 0d, 00, 2a, 15, 00, 2a, 00, 2b, 12, 04, 0d, 00, 2a, 19, 00, 2a, 00, 2b, 0d, 03, 05, 00, 0b, 1b, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 9
+- expression 0 operands: lhs = Counter(0), rhs = Expression(1, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(7), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(5, Sub), rhs = Counter(7)
+- expression 5 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 6 operands: lhs = Expression(7, Add), rhs = Counter(3)
+- expression 7 operands: lhs = Counter(4), rhs = Expression(8, Add)
+- expression 8 operands: lhs = Counter(5), rhs = Counter(6)
+Number of file 0 mappings: 11
+- Code(Counter(0)) at (prev + 12, 1) to (start + 2, 23)
+- Code(Expression(0, Add)) at (prev + 7, 9) to (start + 0, 14)
+    = (c0 + (c1 + c2))
+- Code(Expression(5, Sub)) at (prev + 2, 9) to (start + 4, 26)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Counter(7)) at (prev + 6, 13) to (start + 0, 41)
+- Code(Counter(4)) at (prev + 0, 41) to (start + 0, 42)
+- Code(Expression(3, Sub)) at (prev + 1, 13) to (start + 0, 42)
+    = (c7 - c4)
+- Code(Counter(5)) at (prev + 0, 42) to (start + 0, 43)
+- Code(Expression(4, Sub)) at (prev + 4, 13) to (start + 0, 42)
+    = (((c0 + (c1 + c2)) - c3) - c7)
+- Code(Counter(6)) at (prev + 0, 42) to (start + 0, 43)
+- Code(Counter(3)) at (prev + 3, 5) to (start + 0, 11)
+- Code(Expression(6, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = ((c4 + (c5 + c6)) + c3)
+
+Function name: try_error_result::test2
+Raw bytes (373): 0x[01, 01, 41, 01, 07, 05, 09, 03, 0d, 41, 11, 52, 15, 41, 11, 4a, 1d, 4e, 19, 52, 15, 41, 11, 4e, 00, 52, 15, 41, 11, 4e, 19, 52, 15, 41, 11, 46, 00, 4a, 1d, 4e, 19, 52, 15, 41, 11, 6a, 25, 49, 21, 49, 21, 66, 00, 6a, 25, 49, 21, 9a, 01, 2d, 9e, 01, 29, a2, 01, 41, 03, 0d, a2, 01, 41, 03, 0d, 9e, 01, 29, a2, 01, 41, 03, 0d, 96, 01, 00, 9a, 01, 2d, 9e, 01, 29, a2, 01, 41, 03, 0d, ba, 01, 35, 45, 31, 45, 31, b6, 01, 00, ba, 01, 35, 45, 31, d2, 01, 3d, 4d, 39, 4d, 39, ce, 01, 00, d2, 01, 3d, 4d, 39, db, 01, 0d, 11, df, 01, e3, 01, f3, 01, 15, e7, 01, eb, 01, ef, 01, 19, 1d, 21, 25, f7, 01, fb, 01, 29, 2d, ff, 01, 83, 02, 31, 35, 39, 3d, 28, 01, 3c, 01, 03, 17, 03, 08, 09, 00, 0e, a2, 01, 02, 09, 04, 1a, 41, 06, 0d, 00, 2f, 11, 00, 2f, 00, 30, 52, 00, 31, 03, 35, 15, 04, 11, 00, 12, 4e, 02, 11, 04, 12, 46, 05, 11, 00, 14, 2b, 00, 17, 00, 41, 19, 00, 41, 00, 42, 4a, 00, 43, 00, 5f, 1d, 00, 5f, 00, 60, 43, 01, 0d, 00, 20, 66, 01, 11, 00, 14, 49, 00, 17, 00, 41, 21, 00, 41, 00, 42, 6a, 00, 43, 00, 60, 25, 00, 60, 00, 61, 63, 01, 0d, 00, 20, 96, 01, 04, 11, 00, 14, 9e, 01, 00, 17, 00, 42, 29, 00, 42, 00, 43, 9a, 01, 00, 44, 00, 61, 2d, 00, 61, 00, 62, 93, 01, 01, 0d, 00, 20, b6, 01, 01, 11, 00, 14, 45, 00, 17, 01, 36, 31, 01, 36, 00, 37, ba, 01, 01, 12, 00, 2f, 35, 00, 2f, 00, 30, b3, 01, 01, 0d, 00, 20, ce, 01, 01, 11, 00, 14, 4d, 00, 17, 01, 36, 39, 02, 11, 00, 12, d2, 01, 01, 12, 00, 2f, 3d, 01, 11, 00, 12, cb, 01, 02, 0d, 00, 20, 0d, 03, 05, 00, 0b, d7, 01, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 65
+- expression 0 operands: lhs = Counter(0), rhs = Expression(1, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(16), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(20, Sub), rhs = Counter(5)
+- expression 5 operands: lhs = Counter(16), rhs = Counter(4)
+- expression 6 operands: lhs = Expression(18, Sub), rhs = Counter(7)
+- expression 7 operands: lhs = Expression(19, Sub), rhs = Counter(6)
+- expression 8 operands: lhs = Expression(20, Sub), rhs = Counter(5)
+- expression 9 operands: lhs = Counter(16), rhs = Counter(4)
+- expression 10 operands: lhs = Expression(19, Sub), rhs = Zero
+- expression 11 operands: lhs = Expression(20, Sub), rhs = Counter(5)
+- expression 12 operands: lhs = Counter(16), rhs = Counter(4)
+- expression 13 operands: lhs = Expression(19, Sub), rhs = Counter(6)
+- expression 14 operands: lhs = Expression(20, Sub), rhs = Counter(5)
+- expression 15 operands: lhs = Counter(16), rhs = Counter(4)
+- expression 16 operands: lhs = Expression(17, Sub), rhs = Zero
+- expression 17 operands: lhs = Expression(18, Sub), rhs = Counter(7)
+- expression 18 operands: lhs = Expression(19, Sub), rhs = Counter(6)
+- expression 19 operands: lhs = Expression(20, Sub), rhs = Counter(5)
+- expression 20 operands: lhs = Counter(16), rhs = Counter(4)
+- expression 21 operands: lhs = Expression(26, Sub), rhs = Counter(9)
+- expression 22 operands: lhs = Counter(18), rhs = Counter(8)
+- expression 23 operands: lhs = Counter(18), rhs = Counter(8)
+- expression 24 operands: lhs = Expression(25, Sub), rhs = Zero
+- expression 25 operands: lhs = Expression(26, Sub), rhs = Counter(9)
+- expression 26 operands: lhs = Counter(18), rhs = Counter(8)
+- expression 27 operands: lhs = Expression(38, Sub), rhs = Counter(11)
+- expression 28 operands: lhs = Expression(39, Sub), rhs = Counter(10)
+- expression 29 operands: lhs = Expression(40, Sub), rhs = Counter(16)
+- expression 30 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 31 operands: lhs = Expression(40, Sub), rhs = Counter(16)
+- expression 32 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 33 operands: lhs = Expression(39, Sub), rhs = Counter(10)
+- expression 34 operands: lhs = Expression(40, Sub), rhs = Counter(16)
+- expression 35 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 36 operands: lhs = Expression(37, Sub), rhs = Zero
+- expression 37 operands: lhs = Expression(38, Sub), rhs = Counter(11)
+- expression 38 operands: lhs = Expression(39, Sub), rhs = Counter(10)
+- expression 39 operands: lhs = Expression(40, Sub), rhs = Counter(16)
+- expression 40 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 41 operands: lhs = Expression(46, Sub), rhs = Counter(13)
+- expression 42 operands: lhs = Counter(17), rhs = Counter(12)
+- expression 43 operands: lhs = Counter(17), rhs = Counter(12)
+- expression 44 operands: lhs = Expression(45, Sub), rhs = Zero
+- expression 45 operands: lhs = Expression(46, Sub), rhs = Counter(13)
+- expression 46 operands: lhs = Counter(17), rhs = Counter(12)
+- expression 47 operands: lhs = Expression(52, Sub), rhs = Counter(15)
+- expression 48 operands: lhs = Counter(19), rhs = Counter(14)
+- expression 49 operands: lhs = Counter(19), rhs = Counter(14)
+- expression 50 operands: lhs = Expression(51, Sub), rhs = Zero
+- expression 51 operands: lhs = Expression(52, Sub), rhs = Counter(15)
+- expression 52 operands: lhs = Counter(19), rhs = Counter(14)
+- expression 53 operands: lhs = Expression(54, Add), rhs = Counter(3)
+- expression 54 operands: lhs = Counter(4), rhs = Expression(55, Add)
+- expression 55 operands: lhs = Expression(56, Add), rhs = Expression(60, Add)
+- expression 56 operands: lhs = Counter(5), rhs = Expression(57, Add)
+- expression 57 operands: lhs = Expression(58, Add), rhs = Expression(59, Add)
+- expression 58 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 59 operands: lhs = Counter(8), rhs = Counter(9)
+- expression 60 operands: lhs = Expression(61, Add), rhs = Expression(62, Add)
+- expression 61 operands: lhs = Counter(10), rhs = Counter(11)
+- expression 62 operands: lhs = Expression(63, Add), rhs = Expression(64, Add)
+- expression 63 operands: lhs = Counter(12), rhs = Counter(13)
+- expression 64 operands: lhs = Counter(14), rhs = Counter(15)
+Number of file 0 mappings: 40
+- Code(Counter(0)) at (prev + 60, 1) to (start + 3, 23)
+- Code(Expression(0, Add)) at (prev + 8, 9) to (start + 0, 14)
+    = (c0 + (c1 + c2))
+- Code(Expression(40, Sub)) at (prev + 2, 9) to (start + 4, 26)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Counter(16)) at (prev + 6, 13) to (start + 0, 47)
+- Code(Counter(4)) at (prev + 0, 47) to (start + 0, 48)
+- Code(Expression(20, Sub)) at (prev + 0, 49) to (start + 3, 53)
+    = (c16 - c4)
+- Code(Counter(5)) at (prev + 4, 17) to (start + 0, 18)
+- Code(Expression(19, Sub)) at (prev + 2, 17) to (start + 4, 18)
+    = ((c16 - c4) - c5)
+- Code(Expression(17, Sub)) at (prev + 5, 17) to (start + 0, 20)
+    = ((((c16 - c4) - c5) - c6) - c7)
+- Code(Expression(10, Add)) at (prev + 0, 23) to (start + 0, 65)
+    = (((c16 - c4) - c5) + Zero)
+- Code(Counter(6)) at (prev + 0, 65) to (start + 0, 66)
+- Code(Expression(18, Sub)) at (prev + 0, 67) to (start + 0, 95)
+    = (((c16 - c4) - c5) - c6)
+- Code(Counter(7)) at (prev + 0, 95) to (start + 0, 96)
+- Code(Expression(16, Add)) at (prev + 1, 13) to (start + 0, 32)
+    = (((((c16 - c4) - c5) - c6) - c7) + Zero)
+- Code(Expression(25, Sub)) at (prev + 1, 17) to (start + 0, 20)
+    = ((c18 - c8) - c9)
+- Code(Counter(18)) at (prev + 0, 23) to (start + 0, 65)
+- Code(Counter(8)) at (prev + 0, 65) to (start + 0, 66)
+- Code(Expression(26, Sub)) at (prev + 0, 67) to (start + 0, 96)
+    = (c18 - c8)
+- Code(Counter(9)) at (prev + 0, 96) to (start + 0, 97)
+- Code(Expression(24, Add)) at (prev + 1, 13) to (start + 0, 32)
+    = (((c18 - c8) - c9) + Zero)
+- Code(Expression(37, Sub)) at (prev + 4, 17) to (start + 0, 20)
+    = (((((c0 + (c1 + c2)) - c3) - c16) - c10) - c11)
+- Code(Expression(39, Sub)) at (prev + 0, 23) to (start + 0, 66)
+    = (((c0 + (c1 + c2)) - c3) - c16)
+- Code(Counter(10)) at (prev + 0, 66) to (start + 0, 67)
+- Code(Expression(38, Sub)) at (prev + 0, 68) to (start + 0, 97)
+    = ((((c0 + (c1 + c2)) - c3) - c16) - c10)
+- Code(Counter(11)) at (prev + 0, 97) to (start + 0, 98)
+- Code(Expression(36, Add)) at (prev + 1, 13) to (start + 0, 32)
+    = ((((((c0 + (c1 + c2)) - c3) - c16) - c10) - c11) + Zero)
+- Code(Expression(45, Sub)) at (prev + 1, 17) to (start + 0, 20)
+    = ((c17 - c12) - c13)
+- Code(Counter(17)) at (prev + 0, 23) to (start + 1, 54)
+- Code(Counter(12)) at (prev + 1, 54) to (start + 0, 55)
+- Code(Expression(46, Sub)) at (prev + 1, 18) to (start + 0, 47)
+    = (c17 - c12)
+- Code(Counter(13)) at (prev + 0, 47) to (start + 0, 48)
+- Code(Expression(44, Add)) at (prev + 1, 13) to (start + 0, 32)
+    = (((c17 - c12) - c13) + Zero)
+- Code(Expression(51, Sub)) at (prev + 1, 17) to (start + 0, 20)
+    = ((c19 - c14) - c15)
+- Code(Counter(19)) at (prev + 0, 23) to (start + 1, 54)
+- Code(Counter(14)) at (prev + 2, 17) to (start + 0, 18)
+- Code(Expression(52, Sub)) at (prev + 1, 18) to (start + 0, 47)
+    = (c19 - c14)
+- Code(Counter(15)) at (prev + 1, 17) to (start + 0, 18)
+- Code(Expression(50, Add)) at (prev + 2, 13) to (start + 0, 32)
+    = (((c19 - c14) - c15) + Zero)
+- Code(Counter(3)) at (prev + 3, 5) to (start + 0, 11)
+- Code(Expression(53, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = ((c4 + ((c5 + ((c6 + c7) + (c8 + c9))) + ((c10 + c11) + ((c12 + c13) + (c14 + c15))))) + c3)
+
diff --git a/tests/coverage-map/status-quo/try_error_result.rs b/tests/coverage-map/status-quo/try_error_result.rs
new file mode 100644
index 00000000000..557cbf22bfa
--- /dev/null
+++ b/tests/coverage-map/status-quo/try_error_result.rs
@@ -0,0 +1,118 @@
+#![allow(unused_assignments)]
+// failure-status: 1
+
+fn call(return_error: bool) -> Result<(), ()> {
+    if return_error {
+        Err(())
+    } else {
+        Ok(())
+    }
+}
+
+fn test1() -> Result<(), ()> {
+    let mut
+        countdown = 10
+    ;
+    for
+        _
+    in
+        0..10
+    {
+        countdown
+            -= 1
+        ;
+        if
+            countdown < 5
+        {
+            call(/*return_error=*/ true)?;
+            call(/*return_error=*/ false)?;
+        }
+        else
+        {
+            call(/*return_error=*/ false)?;
+        }
+    }
+    Ok(())
+}
+
+struct Thing1;
+impl Thing1 {
+    fn get_thing_2(&self, return_error: bool) -> Result<Thing2, ()> {
+        if return_error {
+            Err(())
+        } else {
+            Ok(Thing2 {})
+        }
+    }
+}
+
+struct Thing2;
+impl Thing2 {
+    fn call(&self, return_error: bool) -> Result<u32, ()> {
+        if return_error {
+            Err(())
+        } else {
+            Ok(57)
+        }
+    }
+}
+
+fn test2() -> Result<(), ()> {
+    let thing1 = Thing1{};
+    let mut
+        countdown = 10
+    ;
+    for
+        _
+    in
+        0..10
+    {
+        countdown
+            -= 1
+        ;
+        if
+            countdown < 5
+        {
+            thing1.get_thing_2(/*err=*/ false)?.call(/*err=*/ true).expect_err("call should fail");
+            thing1
+                .
+                get_thing_2(/*return_error=*/ false)
+                ?
+                .
+                call(/*return_error=*/ true)
+                .
+                expect_err(
+                    "call should fail"
+                );
+            let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ true)?;
+            assert_eq!(val, 57);
+            let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ false)?;
+            assert_eq!(val, 57);
+        }
+        else
+        {
+            let val = thing1.get_thing_2(/*return_error=*/ false)?.call(/*return_error=*/ false)?;
+            assert_eq!(val, 57);
+            let val = thing1
+                .get_thing_2(/*return_error=*/ false)?
+                .call(/*return_error=*/ false)?;
+            assert_eq!(val, 57);
+            let val = thing1
+                .get_thing_2(/*return_error=*/ false)
+                ?
+                .call(/*return_error=*/ false)
+                ?
+                ;
+            assert_eq!(val, 57);
+        }
+    }
+    Ok(())
+}
+
+fn main() -> Result<(), ()> {
+    test1().expect_err("test1 should fail");
+    test2()
+    ?
+    ;
+    Ok(())
+}
diff --git a/tests/coverage-map/status-quo/unused.cov-map b/tests/coverage-map/status-quo/unused.cov-map
new file mode 100644
index 00000000000..c8b8f195fbd
--- /dev/null
+++ b/tests/coverage-map/status-quo/unused.cov-map
@@ -0,0 +1,94 @@
+Function name: unused::foo::<f32>
+Raw bytes (42): 0x[01, 01, 04, 01, 0f, 05, 09, 03, 0d, 05, 09, 06, 01, 03, 01, 01, 12, 03, 02, 0b, 00, 11, 0a, 01, 09, 00, 0f, 09, 00, 13, 00, 19, 0f, 01, 09, 00, 0f, 0d, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 4
+- expression 0 operands: lhs = Counter(0), rhs = Expression(3, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(1), rhs = Counter(2)
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 3, 1) to (start + 1, 18)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 17)
+    = (c0 + (c1 + c2))
+- Code(Expression(2, Sub)) at (prev + 1, 9) to (start + 0, 15)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Counter(2)) at (prev + 0, 19) to (start + 0, 25)
+- Code(Expression(3, Add)) at (prev + 1, 9) to (start + 0, 15)
+    = (c1 + c2)
+- Code(Counter(3)) at (prev + 2, 1) to (start + 0, 2)
+
+Function name: unused::foo::<u32>
+Raw bytes (42): 0x[01, 01, 04, 01, 0f, 05, 09, 03, 0d, 05, 09, 06, 01, 03, 01, 01, 12, 03, 02, 0b, 00, 11, 0a, 01, 09, 00, 0f, 09, 00, 13, 00, 19, 0f, 01, 09, 00, 0f, 0d, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 4
+- expression 0 operands: lhs = Counter(0), rhs = Expression(3, Add)
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(0, Add), rhs = Counter(3)
+- expression 3 operands: lhs = Counter(1), rhs = Counter(2)
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 3, 1) to (start + 1, 18)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 17)
+    = (c0 + (c1 + c2))
+- Code(Expression(2, Sub)) at (prev + 1, 9) to (start + 0, 15)
+    = ((c0 + (c1 + c2)) - c3)
+- Code(Counter(2)) at (prev + 0, 19) to (start + 0, 25)
+- Code(Expression(3, Add)) at (prev + 1, 9) to (start + 0, 15)
+    = (c1 + c2)
+- Code(Counter(3)) at (prev + 2, 1) to (start + 0, 2)
+
+Function name: unused::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 25, 01, 04, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 37, 1) to (start + 4, 2)
+
+Function name: unused::unused_func (unused)
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 13, 01, 01, 0e, 00, 01, 0f, 02, 06, 00, 02, 06, 00, 07, 00, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 19, 1) to (start + 1, 14)
+- Code(Zero) at (prev + 1, 15) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Zero) at (prev + 1, 1) to (start + 0, 2)
+
+Function name: unused::unused_func2 (unused)
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 19, 01, 01, 0e, 00, 01, 0f, 02, 06, 00, 02, 06, 00, 07, 00, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 25, 1) to (start + 1, 14)
+- Code(Zero) at (prev + 1, 15) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Zero) at (prev + 1, 1) to (start + 0, 2)
+
+Function name: unused::unused_func3 (unused)
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 1f, 01, 01, 0e, 00, 01, 0f, 02, 06, 00, 02, 06, 00, 07, 00, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 31, 1) to (start + 1, 14)
+- Code(Zero) at (prev + 1, 15) to (start + 2, 6)
+- Code(Zero) at (prev + 2, 6) to (start + 0, 7)
+- Code(Zero) at (prev + 1, 1) to (start + 0, 2)
+
+Function name: unused::unused_template_func::<_> (unused)
+Raw bytes (34): 0x[01, 01, 00, 06, 01, 0b, 01, 01, 12, 00, 02, 0b, 00, 11, 00, 01, 09, 00, 0f, 00, 00, 13, 00, 19, 00, 01, 09, 00, 0f, 00, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 6
+- Code(Counter(0)) at (prev + 11, 1) to (start + 1, 18)
+- Code(Zero) at (prev + 2, 11) to (start + 0, 17)
+- Code(Zero) at (prev + 1, 9) to (start + 0, 15)
+- Code(Zero) at (prev + 0, 19) to (start + 0, 25)
+- Code(Zero) at (prev + 1, 9) to (start + 0, 15)
+- Code(Zero) at (prev + 2, 1) to (start + 0, 2)
+
diff --git a/tests/coverage-map/status-quo/unused.rs b/tests/coverage-map/status-quo/unused.rs
new file mode 100644
index 00000000000..d985af13547
--- /dev/null
+++ b/tests/coverage-map/status-quo/unused.rs
@@ -0,0 +1,41 @@
+#![allow(dead_code, unused_assignments, unused_must_use, unused_variables)]
+
+fn foo<T>(x: T) {
+    let mut i = 0;
+    while i < 10 {
+        i != 0 || i != 0;
+        i += 1;
+    }
+}
+
+fn unused_template_func<T>(x: T) {
+    let mut i = 0;
+    while i < 10 {
+        i != 0 || i != 0;
+        i += 1;
+    }
+}
+
+fn unused_func(mut a: u32) {
+    if a != 0 {
+        a += 1;
+    }
+}
+
+fn unused_func2(mut a: u32) {
+    if a != 0 {
+        a += 1;
+    }
+}
+
+fn unused_func3(mut a: u32) {
+    if a != 0 {
+        a += 1;
+    }
+}
+
+fn main() -> Result<(), u8> {
+    foo::<u32>(0);
+    foo::<f32>(0.0);
+    Ok(())
+}
diff --git a/tests/coverage-map/status-quo/while.cov-map b/tests/coverage-map/status-quo/while.cov-map
new file mode 100644
index 00000000000..cfd2be96a0d
--- /dev/null
+++ b/tests/coverage-map/status-quo/while.cov-map
@@ -0,0 +1,15 @@
+Function name: while::main
+Raw bytes (28): 0x[01, 01, 02, 01, 05, 03, 05, 04, 01, 01, 01, 01, 10, 03, 02, 0b, 00, 14, 00, 00, 15, 01, 06, 06, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 2
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(1)
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 1, 1) to (start + 1, 16)
+- Code(Expression(0, Add)) at (prev + 2, 11) to (start + 0, 20)
+    = (c0 + c1)
+- Code(Zero) at (prev + 0, 21) to (start + 1, 6)
+- Code(Expression(1, Sub)) at (prev + 2, 1) to (start + 0, 2)
+    = ((c0 + c1) - c1)
+
diff --git a/tests/coverage-map/status-quo/while.rs b/tests/coverage-map/status-quo/while.rs
new file mode 100644
index 00000000000..781b90b3566
--- /dev/null
+++ b/tests/coverage-map/status-quo/while.rs
@@ -0,0 +1,5 @@
+fn main() {
+    let num = 9;
+    while num >= 10 {
+    }
+}
diff --git a/tests/coverage-map/status-quo/while_early_ret.cov-map b/tests/coverage-map/status-quo/while_early_ret.cov-map
new file mode 100644
index 00000000000..369ebe891f1
--- /dev/null
+++ b/tests/coverage-map/status-quo/while_early_ret.cov-map
@@ -0,0 +1,26 @@
+Function name: while_early_ret::main
+Raw bytes (61): 0x[01, 01, 06, 01, 05, 03, 09, 0e, 05, 03, 09, 17, 09, 0d, 11, 09, 01, 04, 01, 01, 1b, 03, 03, 09, 02, 0a, 0e, 05, 0d, 02, 0e, 0a, 06, 15, 02, 16, 0d, 04, 15, 00, 1b, 11, 04, 15, 00, 1b, 05, 03, 0a, 03, 0a, 09, 06, 05, 00, 0b, 13, 01, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 6
+- expression 0 operands: lhs = Counter(0), rhs = Counter(1)
+- expression 1 operands: lhs = Expression(0, Add), rhs = Counter(2)
+- expression 2 operands: lhs = Expression(3, Sub), rhs = Counter(1)
+- expression 3 operands: lhs = Expression(0, Add), rhs = Counter(2)
+- expression 4 operands: lhs = Expression(5, Add), rhs = Counter(2)
+- expression 5 operands: lhs = Counter(3), rhs = Counter(4)
+Number of file 0 mappings: 9
+- Code(Counter(0)) at (prev + 4, 1) to (start + 1, 27)
+- Code(Expression(0, Add)) at (prev + 3, 9) to (start + 2, 10)
+    = (c0 + c1)
+- Code(Expression(3, Sub)) at (prev + 5, 13) to (start + 2, 14)
+    = ((c0 + c1) - c2)
+- Code(Expression(2, Sub)) at (prev + 6, 21) to (start + 2, 22)
+    = (((c0 + c1) - c2) - c1)
+- Code(Counter(3)) at (prev + 4, 21) to (start + 0, 27)
+- Code(Counter(4)) at (prev + 4, 21) to (start + 0, 27)
+- Code(Counter(1)) at (prev + 3, 10) to (start + 3, 10)
+- Code(Counter(2)) at (prev + 6, 5) to (start + 0, 11)
+- Code(Expression(4, Add)) at (prev + 1, 1) to (start + 0, 2)
+    = ((c3 + c4) + c2)
+
diff --git a/tests/coverage-map/status-quo/while_early_ret.rs b/tests/coverage-map/status-quo/while_early_ret.rs
new file mode 100644
index 00000000000..b2f0eee2cc0
--- /dev/null
+++ b/tests/coverage-map/status-quo/while_early_ret.rs
@@ -0,0 +1,42 @@
+#![allow(unused_assignments)]
+// failure-status: 1
+
+fn main() -> Result<(), u8> {
+    let mut countdown = 10;
+    while
+        countdown
+            >
+        0
+    {
+        if
+            countdown
+                <
+            5
+        {
+            return
+                if
+                    countdown
+                        >
+                    8
+                {
+                    Ok(())
+                }
+                else
+                {
+                    Err(1)
+                }
+                ;
+        }
+        countdown
+            -=
+        1
+        ;
+    }
+    Ok(())
+}
+
+// ISSUE(77553): Originally, this test had `Err(1)` on line 22 (instead of `Ok(())`) and
+// `std::process::exit(2)` on line 26 (instead of `Err(1)`); and this worked as expected on Linux
+// and MacOS. But on Windows (MSVC, at least), the call to `std::process::exit()` exits the program
+// without saving the InstrProf coverage counters. The use of `std::process:exit()` is not critical
+// to the coverage test for early returns, but this is a limitation that should be fixed.
diff --git a/tests/coverage-map/status-quo/yield.cov-map b/tests/coverage-map/status-quo/yield.cov-map
new file mode 100644
index 00000000000..16caa2db343
--- /dev/null
+++ b/tests/coverage-map/status-quo/yield.cov-map
@@ -0,0 +1,72 @@
+Function name: yield::main
+Raw bytes (118): 0x[01, 01, 11, 01, 00, 05, 09, 0d, 00, 0d, 11, 32, 15, 0d, 11, 11, 15, 2e, 00, 32, 15, 0d, 11, 2e, 00, 32, 15, 0d, 11, 19, 1d, 21, 00, 25, 29, 2d, 00, 10, 01, 07, 01, 01, 16, 03, 06, 0b, 00, 2e, 0d, 01, 27, 00, 29, 07, 01, 0e, 00, 34, 0b, 02, 0b, 00, 2e, 32, 01, 22, 00, 27, 2e, 00, 2c, 00, 2e, 1b, 01, 0e, 00, 34, 1f, 03, 09, 00, 16, 2b, 07, 0b, 00, 2e, 21, 01, 27, 00, 29, 37, 01, 0e, 00, 34, 3b, 02, 0b, 00, 2e, 2d, 01, 27, 00, 29, 3f, 01, 0e, 00, 34, 43, 02, 01, 00, 02]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 17
+- expression 0 operands: lhs = Counter(0), rhs = Zero
+- expression 1 operands: lhs = Counter(1), rhs = Counter(2)
+- expression 2 operands: lhs = Counter(3), rhs = Zero
+- expression 3 operands: lhs = Counter(3), rhs = Counter(4)
+- expression 4 operands: lhs = Expression(12, Sub), rhs = Counter(5)
+- expression 5 operands: lhs = Counter(3), rhs = Counter(4)
+- expression 6 operands: lhs = Counter(4), rhs = Counter(5)
+- expression 7 operands: lhs = Expression(11, Sub), rhs = Zero
+- expression 8 operands: lhs = Expression(12, Sub), rhs = Counter(5)
+- expression 9 operands: lhs = Counter(3), rhs = Counter(4)
+- expression 10 operands: lhs = Expression(11, Sub), rhs = Zero
+- expression 11 operands: lhs = Expression(12, Sub), rhs = Counter(5)
+- expression 12 operands: lhs = Counter(3), rhs = Counter(4)
+- expression 13 operands: lhs = Counter(6), rhs = Counter(7)
+- expression 14 operands: lhs = Counter(8), rhs = Zero
+- expression 15 operands: lhs = Counter(9), rhs = Counter(10)
+- expression 16 operands: lhs = Counter(11), rhs = Zero
+Number of file 0 mappings: 16
+- Code(Counter(0)) at (prev + 7, 1) to (start + 1, 22)
+- Code(Expression(0, Add)) at (prev + 6, 11) to (start + 0, 46)
+    = (c0 + Zero)
+- Code(Counter(3)) at (prev + 1, 39) to (start + 0, 41)
+- Code(Expression(1, Add)) at (prev + 1, 14) to (start + 0, 52)
+    = (c1 + c2)
+- Code(Expression(2, Add)) at (prev + 2, 11) to (start + 0, 46)
+    = (c3 + Zero)
+- Code(Expression(12, Sub)) at (prev + 1, 34) to (start + 0, 39)
+    = (c3 - c4)
+- Code(Expression(11, Sub)) at (prev + 0, 44) to (start + 0, 46)
+    = ((c3 - c4) - c5)
+- Code(Expression(6, Add)) at (prev + 1, 14) to (start + 0, 52)
+    = (c4 + c5)
+- Code(Expression(7, Add)) at (prev + 3, 9) to (start + 0, 22)
+    = (((c3 - c4) - c5) + Zero)
+- Code(Expression(10, Add)) at (prev + 7, 11) to (start + 0, 46)
+    = (((c3 - c4) - c5) + Zero)
+- Code(Counter(8)) at (prev + 1, 39) to (start + 0, 41)
+- Code(Expression(13, Add)) at (prev + 1, 14) to (start + 0, 52)
+    = (c6 + c7)
+- Code(Expression(14, Add)) at (prev + 2, 11) to (start + 0, 46)
+    = (c8 + Zero)
+- Code(Counter(11)) at (prev + 1, 39) to (start + 0, 41)
+- Code(Expression(15, Add)) at (prev + 1, 14) to (start + 0, 52)
+    = (c9 + c10)
+- Code(Expression(16, Add)) at (prev + 2, 1) to (start + 0, 2)
+    = (c11 + Zero)
+
+Function name: yield::main::{closure#0}
+Raw bytes (14): 0x[01, 01, 00, 02, 01, 08, 1c, 01, 10, 05, 02, 10, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 2
+- Code(Counter(0)) at (prev + 8, 28) to (start + 1, 16)
+- Code(Counter(1)) at (prev + 2, 16) to (start + 1, 6)
+
+Function name: yield::main::{closure#1}
+Raw bytes (24): 0x[01, 01, 00, 04, 01, 16, 1c, 01, 10, 05, 02, 09, 00, 10, 09, 01, 09, 00, 10, 0d, 01, 10, 01, 06]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 4
+- Code(Counter(0)) at (prev + 22, 28) to (start + 1, 16)
+- Code(Counter(1)) at (prev + 2, 9) to (start + 0, 16)
+- Code(Counter(2)) at (prev + 1, 9) to (start + 0, 16)
+- Code(Counter(3)) at (prev + 1, 16) to (start + 1, 6)
+
diff --git a/tests/coverage-map/status-quo/yield.rs b/tests/coverage-map/status-quo/yield.rs
new file mode 100644
index 00000000000..361275c9215
--- /dev/null
+++ b/tests/coverage-map/status-quo/yield.rs
@@ -0,0 +1,37 @@
+#![feature(generators, generator_trait)]
+#![allow(unused_assignments)]
+
+use std::ops::{Generator, GeneratorState};
+use std::pin::Pin;
+
+fn main() {
+    let mut generator = || {
+        yield 1;
+        return "foo";
+    };
+
+    match Pin::new(&mut generator).resume(()) {
+        GeneratorState::Yielded(1) => {}
+        _ => panic!("unexpected value from resume"),
+    }
+    match Pin::new(&mut generator).resume(()) {
+        GeneratorState::Complete("foo") => {}
+        _ => panic!("unexpected value from resume"),
+    }
+
+    let mut generator = || {
+        yield 1;
+        yield 2;
+        yield 3;
+        return "foo";
+    };
+
+    match Pin::new(&mut generator).resume(()) {
+        GeneratorState::Yielded(1) => {}
+        _ => panic!("unexpected value from resume"),
+    }
+    match Pin::new(&mut generator).resume(()) {
+        GeneratorState::Yielded(2) => {}
+        _ => panic!("unexpected value from resume"),
+    }
+}
diff --git a/tests/coverage-map/trivial.cov-map b/tests/coverage-map/trivial.cov-map
new file mode 100644
index 00000000000..874e294a1c4
--- /dev/null
+++ b/tests/coverage-map/trivial.cov-map
@@ -0,0 +1,8 @@
+Function name: trivial::main
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 03, 01, 00, 0d]
+Number of files: 1
+- file 0 => global file 1
+Number of expressions: 0
+Number of file 0 mappings: 1
+- Code(Counter(0)) at (prev + 3, 1) to (start + 0, 13)
+
diff --git a/tests/coverage-map/trivial.rs b/tests/coverage-map/trivial.rs
new file mode 100644
index 00000000000..d0a9b44fb36
--- /dev/null
+++ b/tests/coverage-map/trivial.rs
@@ -0,0 +1,3 @@
+// compile-flags: --edition=2021
+
+fn main() {}
diff --git a/tests/debuginfo/pretty-std-collections.rs b/tests/debuginfo/pretty-std-collections.rs
index 93597aa7e23..93a0dff6848 100644
--- a/tests/debuginfo/pretty-std-collections.rs
+++ b/tests/debuginfo/pretty-std-collections.rs
@@ -1,7 +1,6 @@
 // ignore-windows failing on win32 bot
 // ignore-freebsd: gdb package too new
 // ignore-android: FIXME(#10381)
-// ignore-macos: FIXME(#78665)
 // compile-flags:-g
 
 // The pretty printers being tested here require the patch from
diff --git a/tests/debuginfo/regression-bad-location-list-67992.rs b/tests/debuginfo/regression-bad-location-list-67992.rs
new file mode 100644
index 00000000000..cc7c4a0d71a
--- /dev/null
+++ b/tests/debuginfo/regression-bad-location-list-67992.rs
@@ -0,0 +1,31 @@
+// compile-flags:-g
+
+// === GDB TESTS ===================================================================================
+
+// gdb-command:run
+
+// gdb-command:print a
+// gdb-check:$1 = regression_bad_location_list_67992::Foo {x: [0 <repeats 1024 times>]}
+
+// === LLDB TESTS ==================================================================================
+
+// lldb-command:run
+// lldb-command:print a
+// lldbg-check:(regression_bad_location_list_67992::Foo) $0 = [...]
+// lldbr-check:(regression_bad_location_list_67992::Foo) a = [...]
+
+const ARRAY_SIZE: usize = 1024;
+
+struct Foo {
+    x: [u64; ARRAY_SIZE],
+}
+
+fn foo(a: Foo, i: usize) -> u64 {
+    a.x[i] // #break
+}
+
+fn main() {
+    println!("Hello, world!");
+
+    println!("{}", foo(Foo { x: [0; ARRAY_SIZE] }, 42));
+}
diff --git a/tests/mir-opt/bool_compare.opt1.InstSimplify.diff b/tests/mir-opt/bool_compare.opt1.InstSimplify.diff
index 8d0011d5067..657c11516a1 100644
--- a/tests/mir-opt/bool_compare.opt1.InstSimplify.diff
+++ b/tests/mir-opt/bool_compare.opt1.InstSimplify.diff
@@ -13,16 +13,17 @@
           _3 = _1;
 -         _2 = Ne(move _3, const true);
 +         _2 = Not(move _3);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/bool_compare.opt2.InstSimplify.diff b/tests/mir-opt/bool_compare.opt2.InstSimplify.diff
index 35f1068709b..bc8be62bd49 100644
--- a/tests/mir-opt/bool_compare.opt2.InstSimplify.diff
+++ b/tests/mir-opt/bool_compare.opt2.InstSimplify.diff
@@ -13,16 +13,17 @@
           _3 = _1;
 -         _2 = Ne(const true, move _3);
 +         _2 = Not(move _3);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/bool_compare.opt3.InstSimplify.diff b/tests/mir-opt/bool_compare.opt3.InstSimplify.diff
index ab15c30ca11..034d5e44013 100644
--- a/tests/mir-opt/bool_compare.opt3.InstSimplify.diff
+++ b/tests/mir-opt/bool_compare.opt3.InstSimplify.diff
@@ -13,16 +13,17 @@
           _3 = _1;
 -         _2 = Eq(move _3, const false);
 +         _2 = Not(move _3);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/bool_compare.opt4.InstSimplify.diff b/tests/mir-opt/bool_compare.opt4.InstSimplify.diff
index 40fd1cfe112..d3096da6c5a 100644
--- a/tests/mir-opt/bool_compare.opt4.InstSimplify.diff
+++ b/tests/mir-opt/bool_compare.opt4.InstSimplify.diff
@@ -13,16 +13,17 @@
           _3 = _1;
 -         _2 = Eq(const false, move _3);
 +         _2 = Not(move _3);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir b/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir
index 80ac92d59f3..b06666c9dd7 100644
--- a/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir
+++ b/tests/mir-opt/building/async_await.b-{closure#0}.generator_resume.0.mir
@@ -2,7 +2,14 @@
 /* generator_layout = GeneratorLayout {
     field_tys: {
         _0: GeneratorSavedTy {
-            ty: impl std::future::Future<Output = ()>,
+            ty: Alias(
+                Opaque,
+                AliasTy {
+                    args: [
+                    ],
+                    def_id: DefId(0:7 ~ async_await[ccf8]::a::{opaque#0}),
+                },
+            ),
             source_info: SourceInfo {
                 span: $DIR/async_await.rs:15:9: 15:14 (#8),
                 scope: scope[0],
@@ -10,7 +17,14 @@
             ignore_for_traits: false,
         },
         _1: GeneratorSavedTy {
-            ty: impl std::future::Future<Output = ()>,
+            ty: Alias(
+                Opaque,
+                AliasTy {
+                    args: [
+                    ],
+                    def_id: DefId(0:7 ~ async_await[ccf8]::a::{opaque#0}),
+                },
+            ),
             source_info: SourceInfo {
                 span: $DIR/async_await.rs:16:9: 16:14 (#10),
                 scope: scope[0],
diff --git a/tests/mir-opt/building/custom/debuginfo.numbered.built.after.mir b/tests/mir-opt/building/custom/debuginfo.numbered.built.after.mir
new file mode 100644
index 00000000000..d8639253718
--- /dev/null
+++ b/tests/mir-opt/building/custom/debuginfo.numbered.built.after.mir
@@ -0,0 +1,11 @@
+// MIR for `numbered` after built
+
+fn numbered(_1: (u32, i32)) -> () {
+    debug first => (_1.0: u32);
+    debug second => (_1.0: u32);
+    let mut _0: ();
+
+    bb0: {
+        return;
+    }
+}
diff --git a/tests/mir-opt/building/custom/debuginfo.pointee.built.after.mir b/tests/mir-opt/building/custom/debuginfo.pointee.built.after.mir
new file mode 100644
index 00000000000..86cced6f801
--- /dev/null
+++ b/tests/mir-opt/building/custom/debuginfo.pointee.built.after.mir
@@ -0,0 +1,10 @@
+// MIR for `pointee` after built
+
+fn pointee(_1: &mut Option<i32>) -> () {
+    debug foo => (((*_1) as variant#1).0: i32);
+    let mut _0: ();
+
+    bb0: {
+        return;
+    }
+}
diff --git a/tests/mir-opt/building/custom/debuginfo.rs b/tests/mir-opt/building/custom/debuginfo.rs
new file mode 100644
index 00000000000..bfdc3d3eacd
--- /dev/null
+++ b/tests/mir-opt/building/custom/debuginfo.rs
@@ -0,0 +1,71 @@
+#![feature(custom_mir, core_intrinsics)]
+
+extern crate core;
+use core::intrinsics::mir::*;
+
+// EMIT_MIR debuginfo.pointee.built.after.mir
+#[custom_mir(dialect = "built")]
+fn pointee(opt: &mut Option<i32>) {
+    mir!(
+        debug foo => Field::<i32>(Variant(*opt, 1), 0);
+        {
+            Return()
+        }
+    )
+}
+
+// EMIT_MIR debuginfo.numbered.built.after.mir
+#[custom_mir(dialect = "analysis", phase = "post-cleanup")]
+fn numbered(i: (u32, i32)) {
+    mir!(
+        debug first => i.0;
+        debug second => i.0;
+        {
+            Return()
+        }
+    )
+}
+
+struct S { x: f32 }
+
+// EMIT_MIR debuginfo.structured.built.after.mir
+#[custom_mir(dialect = "analysis", phase = "post-cleanup")]
+fn structured(i: S) {
+    mir!(
+        debug x => i.x;
+        {
+            Return()
+        }
+    )
+}
+
+// EMIT_MIR debuginfo.variant.built.after.mir
+#[custom_mir(dialect = "built")]
+fn variant(opt: Option<i32>) {
+    mir!(
+        debug inner => Field::<i32>(Variant(opt, 1), 0);
+        {
+            Return()
+        }
+    )
+}
+
+// EMIT_MIR debuginfo.variant_deref.built.after.mir
+#[custom_mir(dialect = "built")]
+fn variant_deref(opt: Option<&i32>) {
+    mir!(
+        debug pointer => Field::<&i32>(Variant(opt, 1), 0);
+        debug deref => *Field::<&i32>(Variant(opt, 1), 0);
+        {
+            Return()
+        }
+    )
+}
+
+fn main() {
+    numbered((5, 6));
+    structured(S { x: 5. });
+    variant(Some(5));
+    variant_deref(Some(&5));
+    pointee(&mut Some(5));
+}
diff --git a/tests/mir-opt/building/custom/debuginfo.structured.built.after.mir b/tests/mir-opt/building/custom/debuginfo.structured.built.after.mir
new file mode 100644
index 00000000000..d122b6bfe29
--- /dev/null
+++ b/tests/mir-opt/building/custom/debuginfo.structured.built.after.mir
@@ -0,0 +1,10 @@
+// MIR for `structured` after built
+
+fn structured(_1: S) -> () {
+    debug x => (_1.0: f32);
+    let mut _0: ();
+
+    bb0: {
+        return;
+    }
+}
diff --git a/tests/mir-opt/building/custom/debuginfo.variant.built.after.mir b/tests/mir-opt/building/custom/debuginfo.variant.built.after.mir
new file mode 100644
index 00000000000..d173723fd89
--- /dev/null
+++ b/tests/mir-opt/building/custom/debuginfo.variant.built.after.mir
@@ -0,0 +1,10 @@
+// MIR for `variant` after built
+
+fn variant(_1: Option<i32>) -> () {
+    debug inner => ((_1 as variant#1).0: i32);
+    let mut _0: ();
+
+    bb0: {
+        return;
+    }
+}
diff --git a/tests/mir-opt/building/custom/debuginfo.variant_deref.built.after.mir b/tests/mir-opt/building/custom/debuginfo.variant_deref.built.after.mir
new file mode 100644
index 00000000000..37d5d1b2dfc
--- /dev/null
+++ b/tests/mir-opt/building/custom/debuginfo.variant_deref.built.after.mir
@@ -0,0 +1,11 @@
+// MIR for `variant_deref` after built
+
+fn variant_deref(_1: Option<&i32>) -> () {
+    debug pointer => ((_1 as variant#1).0: &i32);
+    debug deref => (*((_1 as variant#1).0: &i32));
+    let mut _0: ();
+
+    bb0: {
+        return;
+    }
+}
diff --git a/tests/mir-opt/building/logical_or_in_conditional.rs b/tests/mir-opt/building/logical_or_in_conditional.rs
new file mode 100644
index 00000000000..ae159f7e122
--- /dev/null
+++ b/tests/mir-opt/building/logical_or_in_conditional.rs
@@ -0,0 +1,39 @@
+// compile-flags: -Z validate-mir
+#![feature(let_chains)]
+struct Droppy(u8);
+impl Drop for Droppy {
+    fn drop(&mut self) {
+        println!("drop {}", self.0);
+    }
+}
+
+enum E {
+    A(u8),
+    B,
+}
+
+impl E {
+    fn f() -> Self {
+        Self::A(1)
+    }
+}
+
+fn always_true() -> bool {
+    true
+}
+
+// EMIT_MIR logical_or_in_conditional.test_or.built.after.mir
+fn test_or() {
+    if Droppy(0).0 > 0 || Droppy(1).0 > 1 {}
+}
+
+// EMIT_MIR logical_or_in_conditional.test_complex.built.after.mir
+fn test_complex() {
+    if let E::A(_) = E::f() && ((always_true() && Droppy(0).0 > 0) || Droppy(1).0 > 1) {}
+
+    if !always_true() && let E::B = E::f() {}
+}
+
+fn main() {
+    test_or();
+}
diff --git a/tests/mir-opt/building/logical_or_in_conditional.test_complex.built.after.mir b/tests/mir-opt/building/logical_or_in_conditional.test_complex.built.after.mir
new file mode 100644
index 00000000000..096aaec4a38
--- /dev/null
+++ b/tests/mir-opt/building/logical_or_in_conditional.test_complex.built.after.mir
@@ -0,0 +1,186 @@
+// MIR for `test_complex` after built
+
+fn test_complex() -> () {
+    let mut _0: ();
+    let _1: ();
+    let mut _2: E;
+    let mut _3: isize;
+    let mut _4: bool;
+    let mut _5: bool;
+    let mut _6: u8;
+    let mut _7: Droppy;
+    let mut _8: bool;
+    let mut _9: u8;
+    let mut _10: Droppy;
+    let mut _11: bool;
+    let mut _12: E;
+    let mut _13: isize;
+
+    bb0: {
+        StorageLive(_1);
+        StorageLive(_2);
+        _2 = E::f() -> [return: bb1, unwind: bb31];
+    }
+
+    bb1: {
+        FakeRead(ForMatchedPlace(None), _2);
+        _3 = discriminant(_2);
+        switchInt(move _3) -> [0: bb2, otherwise: bb3];
+    }
+
+    bb2: {
+        falseEdge -> [real: bb4, imaginary: bb3];
+    }
+
+    bb3: {
+        goto -> bb19;
+    }
+
+    bb4: {
+        StorageLive(_4);
+        _4 = always_true() -> [return: bb5, unwind: bb31];
+    }
+
+    bb5: {
+        switchInt(move _4) -> [0: bb7, otherwise: bb6];
+    }
+
+    bb6: {
+        StorageLive(_5);
+        StorageLive(_6);
+        StorageLive(_7);
+        _7 = Droppy(const 0_u8);
+        _6 = (_7.0: u8);
+        _5 = Gt(move _6, const 0_u8);
+        switchInt(move _5) -> [0: bb9, otherwise: bb8];
+    }
+
+    bb7: {
+        goto -> bb13;
+    }
+
+    bb8: {
+        drop(_7) -> [return: bb10, unwind: bb31];
+    }
+
+    bb9: {
+        goto -> bb11;
+    }
+
+    bb10: {
+        StorageDead(_7);
+        StorageDead(_6);
+        goto -> bb16;
+    }
+
+    bb11: {
+        drop(_7) -> [return: bb12, unwind: bb31];
+    }
+
+    bb12: {
+        StorageDead(_7);
+        StorageDead(_6);
+        goto -> bb13;
+    }
+
+    bb13: {
+        StorageLive(_8);
+        StorageLive(_9);
+        StorageLive(_10);
+        _10 = Droppy(const 1_u8);
+        _9 = (_10.0: u8);
+        _8 = Gt(move _9, const 1_u8);
+        switchInt(move _8) -> [0: bb15, otherwise: bb14];
+    }
+
+    bb14: {
+        drop(_10) -> [return: bb16, unwind: bb31];
+    }
+
+    bb15: {
+        goto -> bb17;
+    }
+
+    bb16: {
+        StorageDead(_10);
+        StorageDead(_9);
+        _1 = const ();
+        goto -> bb20;
+    }
+
+    bb17: {
+        drop(_10) -> [return: bb18, unwind: bb31];
+    }
+
+    bb18: {
+        StorageDead(_10);
+        StorageDead(_9);
+        goto -> bb19;
+    }
+
+    bb19: {
+        _1 = const ();
+        goto -> bb20;
+    }
+
+    bb20: {
+        StorageDead(_8);
+        StorageDead(_5);
+        StorageDead(_4);
+        StorageDead(_2);
+        StorageDead(_1);
+        StorageLive(_11);
+        _11 = always_true() -> [return: bb21, unwind: bb31];
+    }
+
+    bb21: {
+        switchInt(move _11) -> [0: bb23, otherwise: bb22];
+    }
+
+    bb22: {
+        goto -> bb29;
+    }
+
+    bb23: {
+        goto -> bb24;
+    }
+
+    bb24: {
+        StorageLive(_12);
+        _12 = E::f() -> [return: bb25, unwind: bb31];
+    }
+
+    bb25: {
+        FakeRead(ForMatchedPlace(None), _12);
+        _13 = discriminant(_12);
+        switchInt(move _13) -> [1: bb27, otherwise: bb26];
+    }
+
+    bb26: {
+        goto -> bb29;
+    }
+
+    bb27: {
+        falseEdge -> [real: bb28, imaginary: bb26];
+    }
+
+    bb28: {
+        _0 = const ();
+        goto -> bb30;
+    }
+
+    bb29: {
+        _0 = const ();
+        goto -> bb30;
+    }
+
+    bb30: {
+        StorageDead(_11);
+        StorageDead(_12);
+        return;
+    }
+
+    bb31 (cleanup): {
+        resume;
+    }
+}
diff --git a/tests/mir-opt/building/logical_or_in_conditional.test_or.built.after.mir b/tests/mir-opt/building/logical_or_in_conditional.test_or.built.after.mir
new file mode 100644
index 00000000000..b84c17c2188
--- /dev/null
+++ b/tests/mir-opt/building/logical_or_in_conditional.test_or.built.after.mir
@@ -0,0 +1,87 @@
+// MIR for `test_or` after built
+
+fn test_or() -> () {
+    let mut _0: ();
+    let mut _1: bool;
+    let mut _2: u8;
+    let mut _3: Droppy;
+    let mut _4: bool;
+    let mut _5: u8;
+    let mut _6: Droppy;
+
+    bb0: {
+        StorageLive(_1);
+        StorageLive(_2);
+        StorageLive(_3);
+        _3 = Droppy(const 0_u8);
+        _2 = (_3.0: u8);
+        _1 = Gt(move _2, const 0_u8);
+        switchInt(move _1) -> [0: bb2, otherwise: bb1];
+    }
+
+    bb1: {
+        drop(_3) -> [return: bb3, unwind: bb12];
+    }
+
+    bb2: {
+        goto -> bb4;
+    }
+
+    bb3: {
+        StorageDead(_3);
+        StorageDead(_2);
+        goto -> bb8;
+    }
+
+    bb4: {
+        drop(_3) -> [return: bb5, unwind: bb12];
+    }
+
+    bb5: {
+        StorageDead(_3);
+        StorageDead(_2);
+        StorageLive(_4);
+        StorageLive(_5);
+        StorageLive(_6);
+        _6 = Droppy(const 1_u8);
+        _5 = (_6.0: u8);
+        _4 = Gt(move _5, const 1_u8);
+        switchInt(move _4) -> [0: bb7, otherwise: bb6];
+    }
+
+    bb6: {
+        drop(_6) -> [return: bb8, unwind: bb12];
+    }
+
+    bb7: {
+        goto -> bb9;
+    }
+
+    bb8: {
+        StorageDead(_6);
+        StorageDead(_5);
+        _0 = const ();
+        goto -> bb11;
+    }
+
+    bb9: {
+        drop(_6) -> [return: bb10, unwind: bb12];
+    }
+
+    bb10: {
+        StorageDead(_6);
+        StorageDead(_5);
+        _0 = const ();
+        goto -> bb11;
+    }
+
+    bb11: {
+        StorageDead(_4);
+        StorageDead(_1);
+        return;
+    }
+
+    bb12 (cleanup): {
+        resume;
+    }
+}
diff --git a/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff b/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
index 255ec94816c..ed47baa67da 100644
--- a/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
+++ b/tests/mir-opt/const_debuginfo.main.ConstDebugInfo.diff
@@ -33,14 +33,22 @@
                           let _15: bool;
                           let _16: u32;
                           scope 6 {
-                              debug f => (bool, bool, u32){ .0 => _14, .1 => _15, .2 => _16, };
+-                             debug ((f: (bool, bool, u32)).0: bool) => _14;
+-                             debug ((f: (bool, bool, u32)).1: bool) => _15;
+-                             debug ((f: (bool, bool, u32)).2: u32) => _16;
++                             debug ((f: (bool, bool, u32)).0: bool) => const true;
++                             debug ((f: (bool, bool, u32)).1: bool) => const false;
++                             debug ((f: (bool, bool, u32)).2: u32) => const 123_u32;
                               let _10: std::option::Option<u16>;
                               scope 7 {
                                   debug o => _10;
                                   let _17: u32;
                                   let _18: u32;
                                   scope 8 {
-                                      debug p => Point{ .0 => _17, .1 => _18, };
+-                                     debug ((p: Point).0: u32) => _17;
+-                                     debug ((p: Point).1: u32) => _18;
++                                     debug ((p: Point).0: u32) => const 32_u32;
++                                     debug ((p: Point).1: u32) => const 32_u32;
                                       let _11: u32;
                                       scope 9 {
 -                                         debug a => _11;
diff --git a/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff b/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
index d1dbc7089a1..1768298d521 100644
--- a/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
+++ b/tests/mir-opt/const_goto_storage.match_nested_if.ConstGoto.diff
@@ -43,31 +43,33 @@
       }
   
       bb3: {
--         StorageDead(_6);
 -         switchInt(move _5) -> [0: bb5, otherwise: bb4];
 -     }
 - 
 -     bb4: {
+-         StorageDead(_6);
 -         _4 = const true;
 -         goto -> bb6;
 -     }
 - 
 -     bb5: {
+-         StorageDead(_6);
 -         _4 = const false;
 -         goto -> bb6;
 -     }
 - 
 -     bb6: {
--         StorageDead(_5);
 -         switchInt(move _4) -> [0: bb8, otherwise: bb7];
 -     }
 - 
 -     bb7: {
+-         StorageDead(_5);
 -         _3 = const true;
 -         goto -> bb9;
 -     }
 - 
 -     bb8: {
+-         StorageDead(_5);
 -         _3 = const false;
 -         goto -> bb9;
 -     }
diff --git a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-abort.diff b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-abort.diff
index 55c774d555d..e443c8991f9 100644
--- a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-abort.diff
+++ b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-abort.diff
@@ -34,11 +34,11 @@
           StorageLive(_5);
           StorageLive(_6);
           _6 = const 3_usize;
-          _7 = const 3_usize;
+          _7 = Len((*_1));
 -         _8 = Lt(_6, _7);
 -         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind unreachable];
-+         _8 = const false;
-+         assert(const false, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 3_usize) -> [success: bb1, unwind unreachable];
++         _8 = Lt(const 3_usize, _7);
++         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, const 3_usize) -> [success: bb1, unwind unreachable];
       }
   
       bb1: {
diff --git a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-unwind.diff b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-unwind.diff
index dcab570ea77..592f43f4739 100644
--- a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.32bit.panic-unwind.diff
@@ -34,11 +34,11 @@
           StorageLive(_5);
           StorageLive(_6);
           _6 = const 3_usize;
-          _7 = const 3_usize;
+          _7 = Len((*_1));
 -         _8 = Lt(_6, _7);
 -         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind continue];
-+         _8 = const false;
-+         assert(const false, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 3_usize) -> [success: bb1, unwind continue];
++         _8 = Lt(const 3_usize, _7);
++         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, const 3_usize) -> [success: bb1, unwind continue];
       }
   
       bb1: {
diff --git a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-abort.diff b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-abort.diff
index 55c774d555d..e443c8991f9 100644
--- a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-abort.diff
+++ b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-abort.diff
@@ -34,11 +34,11 @@
           StorageLive(_5);
           StorageLive(_6);
           _6 = const 3_usize;
-          _7 = const 3_usize;
+          _7 = Len((*_1));
 -         _8 = Lt(_6, _7);
 -         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind unreachable];
-+         _8 = const false;
-+         assert(const false, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 3_usize) -> [success: bb1, unwind unreachable];
++         _8 = Lt(const 3_usize, _7);
++         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, const 3_usize) -> [success: bb1, unwind unreachable];
       }
   
       bb1: {
diff --git a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-unwind.diff b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-unwind.diff
index dcab570ea77..592f43f4739 100644
--- a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.main.ConstProp.64bit.panic-unwind.diff
@@ -34,11 +34,11 @@
           StorageLive(_5);
           StorageLive(_6);
           _6 = const 3_usize;
-          _7 = const 3_usize;
+          _7 = Len((*_1));
 -         _8 = Lt(_6, _7);
 -         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind continue];
-+         _8 = const false;
-+         assert(const false, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 3_usize) -> [success: bb1, unwind continue];
++         _8 = Lt(const 3_usize, _7);
++         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, const 3_usize) -> [success: bb1, unwind continue];
       }
   
       bb1: {
diff --git a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.rs b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.rs
index 7931c4f02ae..d6b1a93f304 100644
--- a/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.rs
+++ b/tests/mir-opt/const_prop/bad_op_unsafe_oob_for_slices.rs
@@ -1,8 +1,7 @@
 // unit-test: ConstProp
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
-// compile-flags: -Zmir-enable-passes=+NormalizeArrayLen
-
 // EMIT_MIR_FOR_EACH_BIT_WIDTH
+
 // EMIT_MIR bad_op_unsafe_oob_for_slices.main.ConstProp.diff
 #[allow(unconditional_panic)]
 fn main() {
diff --git a/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-abort.diff
index 6daef87dd2c..c2fd7f65f5e 100644
--- a/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-abort.diff
@@ -24,5 +24,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc3 (size: 8, align: 4) {
++     02 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-unwind.diff
index 125407bf285..21a31f9aba3 100644
--- a/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/checked_add.main.ConstProp.panic-unwind.diff
@@ -24,5 +24,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc3 (size: 8, align: 4) {
++     02 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-abort.diff
index ca0ce2888cd..c0efc873029 100644
--- a/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-abort.diff
@@ -29,5 +29,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc3 (size: 2, align: 1) {
++     03 00                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-unwind.diff
index d63fb9255a3..2aee6f164ae 100644
--- a/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/indirect.main.ConstProp.panic-unwind.diff
@@ -29,5 +29,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc3 (size: 2, align: 1) {
++     03 00                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-abort.diff
index 51e17cf690a..7ba51ccdbf6 100644
--- a/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-abort.diff
@@ -35,5 +35,9 @@
           _0 = const ();
           return;
       }
++ }
++ 
++ alloc3 (size: 2, align: 1) {
++     00 01                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-unwind.diff
index 5ef201497fb..545b7f22f6e 100644
--- a/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/inherit_overflow.main.ConstProp.panic-unwind.diff
@@ -35,5 +35,9 @@
           _0 = const ();
           return;
       }
++ }
++ 
++ alloc3 (size: 2, align: 1) {
++     00 01                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-abort.diff
index 170c019782d..18341ba7db9 100644
--- a/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-abort.diff
@@ -18,5 +18,13 @@
           StorageDead(_2);
           return;
       }
++ }
++ 
++ alloc8 (size: 2, align: 1) {
++     00 00                                           │ ..
++ }
++ 
++ alloc7 (size: 2, align: 1) {
++     00 00                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-unwind.diff
index 64227dfd78c..50763c10f0c 100644
--- a/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/issue_66971.main.ConstProp.panic-unwind.diff
@@ -18,5 +18,13 @@
           StorageDead(_2);
           return;
       }
++ }
++ 
++ alloc8 (size: 2, align: 1) {
++     00 00                                           │ ..
++ }
++ 
++ alloc7 (size: 2, align: 1) {
++     00 00                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-abort.diff
index e1f3f37b370..015180db896 100644
--- a/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-abort.diff
@@ -23,5 +23,17 @@
           StorageDead(_2);
           return;
       }
++ }
++ 
++ alloc12 (size: 2, align: 1) {
++     01 02                                           │ ..
++ }
++ 
++ alloc11 (size: 2, align: 1) {
++     01 02                                           │ ..
++ }
++ 
++ alloc8 (size: 2, align: 1) {
++     01 02                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-unwind.diff
index aaa376a95cf..8e41705c1af 100644
--- a/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/issue_67019.main.ConstProp.panic-unwind.diff
@@ -23,5 +23,17 @@
           StorageDead(_2);
           return;
       }
++ }
++ 
++ alloc12 (size: 2, align: 1) {
++     01 02                                           │ ..
++ }
++ 
++ alloc11 (size: 2, align: 1) {
++     01 02                                           │ ..
++ }
++ 
++ alloc8 (size: 2, align: 1) {
++     01 02                                           │ ..
   }
   
diff --git a/tests/mir-opt/const_prop/large_array_index.rs b/tests/mir-opt/const_prop/large_array_index.rs
index 6c03fe9d9c2..d226bd54671 100644
--- a/tests/mir-opt/const_prop/large_array_index.rs
+++ b/tests/mir-opt/const_prop/large_array_index.rs
@@ -1,6 +1,5 @@
 // unit-test: ConstProp
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
-// compile-flags: -Zmir-enable-passes=+NormalizeArrayLen
 // EMIT_MIR_FOR_EACH_BIT_WIDTH
 
 // EMIT_MIR large_array_index.main.ConstProp.diff
diff --git a/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff b/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
index 0f118c7f59f..56a127ae31e 100644
--- a/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
+++ b/tests/mir-opt/const_prop/mutable_variable_aggregate.main.ConstProp.diff
@@ -25,5 +25,13 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc7 (size: 8, align: 4) {
++     2a 00 00 00 63 00 00 00                         │ *...c...
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     2a 00 00 00 2b 00 00 00                         │ *...+...
   }
   
diff --git a/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-abort.diff
index a85dcf9c7ed..a1b433716c8 100644
--- a/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-abort.diff
@@ -46,5 +46,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc7 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
   }
   
diff --git a/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-unwind.diff
index 15ef0fa4dff..2dc514194bc 100644
--- a/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/mutable_variable_unprop_assign.main.ConstProp.panic-unwind.diff
@@ -46,5 +46,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc7 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
   }
   
diff --git a/tests/mir-opt/const_prop/repeat.rs b/tests/mir-opt/const_prop/repeat.rs
index 21dba84af37..fb8b825ee36 100644
--- a/tests/mir-opt/const_prop/repeat.rs
+++ b/tests/mir-opt/const_prop/repeat.rs
@@ -1,6 +1,5 @@
 // unit-test: ConstProp
 // EMIT_MIR_FOR_EACH_PANIC_STRATEGY
-// compile-flags: -Zmir-enable-passes=+NormalizeArrayLen
 // EMIT_MIR_FOR_EACH_BIT_WIDTH
 
 // EMIT_MIR repeat.main.ConstProp.diff
diff --git a/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-abort.diff
index f3b30e0dcde..6c9de476465 100644
--- a/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-abort.diff
@@ -17,5 +17,9 @@
 +         _0 = const 4_u32;
           return;
       }
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     04 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-unwind.diff
index 79f85fcef11..0f079278c43 100644
--- a/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/return_place.add.ConstProp.panic-unwind.diff
@@ -17,5 +17,9 @@
 +         _0 = const 4_u32;
           return;
       }
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     04 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-abort.mir b/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-abort.mir
index c8f3f641a6d..c2488f3944c 100644
--- a/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-abort.mir
+++ b/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-abort.mir
@@ -14,3 +14,7 @@ fn add() -> u32 {
         return;
     }
 }
+
+alloc5 (size: 8, align: 4) {
+    04 00 00 00 00 __ __ __                         │ .....░░░
+}
diff --git a/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-unwind.mir b/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-unwind.mir
index 9a064697463..fa0b9c77eaf 100644
--- a/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-unwind.mir
+++ b/tests/mir-opt/const_prop/return_place.add.PreCodegen.before.panic-unwind.mir
@@ -14,3 +14,7 @@ fn add() -> u32 {
         return;
     }
 }
+
+alloc5 (size: 8, align: 4) {
+    04 00 00 00 00 __ __ __                         │ .....░░░
+}
diff --git a/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-abort.diff b/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-abort.diff
index 9e705695ac0..988ef7dd225 100644
--- a/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-abort.diff
+++ b/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-abort.diff
@@ -29,5 +29,17 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc9 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
++ }
++ 
++ alloc8 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
++ }
++ 
++ alloc6 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
   }
   
diff --git a/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-unwind.diff b/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-unwind.diff
index 882dd97cc16..29844619720 100644
--- a/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-unwind.diff
+++ b/tests/mir-opt/const_prop/tuple_literal_propagation.main.ConstProp.panic-unwind.diff
@@ -29,5 +29,17 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc9 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
++ }
++ 
++ alloc8 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
++ }
++ 
++ alloc6 (size: 8, align: 4) {
++     01 00 00 00 02 00 00 00                         │ ........
   }
   
diff --git a/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-abort.diff
new file mode 100644
index 00000000000..212ddc5b154
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-abort.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: [u32; 4];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u32, const 1_u32, const 2_u32, const 3_u32];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind unreachable];
++         _4 = const 4_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 4_usize, const 2_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-unwind.diff
new file mode 100644
index 00000000000..5c53d4f4461
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.32bit.panic-unwind.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: [u32; 4];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u32, const 1_u32, const 2_u32, const 3_u32];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind continue];
++         _4 = const 4_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 4_usize, const 2_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-abort.diff
new file mode 100644
index 00000000000..212ddc5b154
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-abort.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: [u32; 4];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u32, const 1_u32, const 2_u32, const 3_u32];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind unreachable];
++         _4 = const 4_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 4_usize, const 2_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-unwind.diff
new file mode 100644
index 00000000000..5c53d4f4461
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/array_index.main.DataflowConstProp.64bit.panic-unwind.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: [u32; 4];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u32, const 1_u32, const 2_u32, const 3_u32];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind continue];
++         _4 = const 4_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 4_usize, const 2_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/array_index.rs b/tests/mir-opt/dataflow-const-prop/array_index.rs
new file mode 100644
index 00000000000..ddb3646ca9b
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/array_index.rs
@@ -0,0 +1,8 @@
+// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
+// unit-test: DataflowConstProp
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
+
+// EMIT_MIR array_index.main.DataflowConstProp.diff
+fn main() {
+    let x: u32 = [0, 1, 2, 3][2];
+}
diff --git a/tests/mir-opt/dataflow-const-prop/boolean_identities.rs b/tests/mir-opt/dataflow-const-prop/boolean_identities.rs
new file mode 100644
index 00000000000..9e911e85b88
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/boolean_identities.rs
@@ -0,0 +1,10 @@
+// unit-test: DataflowConstProp
+
+// EMIT_MIR boolean_identities.test.DataflowConstProp.diff
+pub fn test(x: bool, y: bool) -> bool {
+    (y | true) & (x & false)
+}
+
+fn main() {
+    test(true, false);
+}
diff --git a/tests/mir-opt/dataflow-const-prop/boolean_identities.test.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/boolean_identities.test.DataflowConstProp.diff
new file mode 100644
index 00000000000..5440c38ce4b
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/boolean_identities.test.DataflowConstProp.diff
@@ -0,0 +1,33 @@
+- // MIR for `test` before DataflowConstProp
++ // MIR for `test` after DataflowConstProp
+  
+  fn test(_1: bool, _2: bool) -> bool {
+      debug x => _1;
+      debug y => _2;
+      let mut _0: bool;
+      let mut _3: bool;
+      let mut _4: bool;
+      let mut _5: bool;
+      let mut _6: bool;
+  
+      bb0: {
+          StorageLive(_3);
+          StorageLive(_4);
+          _4 = _2;
+-         _3 = BitOr(move _4, const true);
++         _3 = const true;
+          StorageDead(_4);
+          StorageLive(_5);
+          StorageLive(_6);
+          _6 = _1;
+-         _5 = BitAnd(move _6, const false);
++         _5 = const false;
+          StorageDead(_6);
+-         _0 = BitAnd(move _3, move _5);
++         _0 = const false;
+          StorageDead(_5);
+          StorageDead(_3);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..07ac5b72e24
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.32bit.diff
@@ -0,0 +1,63 @@
+- // MIR for `constant` before DataflowConstProp
++ // MIR for `constant` after DataflowConstProp
+  
+  fn constant() -> () {
+      let mut _0: ();
+      let _1: E;
+      let mut _3: isize;
+      scope 1 {
+          debug e => _1;
+          let _2: i32;
+          let _4: i32;
+          let _5: i32;
+          scope 2 {
+              debug x => _2;
+          }
+          scope 3 {
+              debug x => _4;
+          }
+          scope 4 {
+              debug x => _5;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = const _;
+          StorageLive(_2);
+-         _3 = discriminant(_1);
+-         switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2];
++         _3 = const 0_isize;
++         switchInt(const 0_isize) -> [0: bb3, 1: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          StorageLive(_5);
+          _5 = ((_1 as V2).0: i32);
+          _2 = _5;
+          StorageDead(_5);
+          goto -> bb4;
+      }
+  
+      bb2: {
+          unreachable;
+      }
+  
+      bb3: {
+          StorageLive(_4);
+-         _4 = ((_1 as V1).0: i32);
+-         _2 = _4;
++         _4 = const 0_i32;
++         _2 = const 0_i32;
+          StorageDead(_4);
+          goto -> bb4;
+      }
+  
+      bb4: {
+          _0 = const ();
+          StorageDead(_2);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..07ac5b72e24
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.constant.DataflowConstProp.64bit.diff
@@ -0,0 +1,63 @@
+- // MIR for `constant` before DataflowConstProp
++ // MIR for `constant` after DataflowConstProp
+  
+  fn constant() -> () {
+      let mut _0: ();
+      let _1: E;
+      let mut _3: isize;
+      scope 1 {
+          debug e => _1;
+          let _2: i32;
+          let _4: i32;
+          let _5: i32;
+          scope 2 {
+              debug x => _2;
+          }
+          scope 3 {
+              debug x => _4;
+          }
+          scope 4 {
+              debug x => _5;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = const _;
+          StorageLive(_2);
+-         _3 = discriminant(_1);
+-         switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2];
++         _3 = const 0_isize;
++         switchInt(const 0_isize) -> [0: bb3, 1: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          StorageLive(_5);
+          _5 = ((_1 as V2).0: i32);
+          _2 = _5;
+          StorageDead(_5);
+          goto -> bb4;
+      }
+  
+      bb2: {
+          unreachable;
+      }
+  
+      bb3: {
+          StorageLive(_4);
+-         _4 = ((_1 as V1).0: i32);
+-         _2 = _4;
++         _4 = const 0_i32;
++         _2 = const 0_i32;
+          StorageDead(_4);
+          goto -> bb4;
+      }
+  
+      bb4: {
+          _0 = const ();
+          StorageDead(_2);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.32bit.diff
index 775325c4d06..775325c4d06 100644
--- a/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.32bit.diff
diff --git a/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..775325c4d06
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.multiple.DataflowConstProp.64bit.diff
@@ -0,0 +1,82 @@
+- // MIR for `multiple` before DataflowConstProp
++ // MIR for `multiple` after DataflowConstProp
+  
+  fn multiple(_1: bool, _2: u8) -> () {
+      debug x => _1;
+      debug i => _2;
+      let mut _0: ();
+      let _3: std::option::Option<u8>;
+      let mut _4: bool;
+      let mut _5: u8;
+      let mut _7: isize;
+      scope 1 {
+          debug e => _3;
+          let _6: u8;
+          let _8: u8;
+          scope 2 {
+              debug x => _6;
+              let _9: u8;
+              scope 4 {
+                  debug y => _9;
+              }
+          }
+          scope 3 {
+              debug i => _8;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_3);
+          StorageLive(_4);
+          _4 = _1;
+          switchInt(move _4) -> [0: bb2, otherwise: bb1];
+      }
+  
+      bb1: {
+          StorageLive(_5);
+          _5 = _2;
+          _3 = Option::<u8>::Some(move _5);
+          StorageDead(_5);
+          goto -> bb3;
+      }
+  
+      bb2: {
+          _3 = Option::<u8>::None;
+          goto -> bb3;
+      }
+  
+      bb3: {
+          StorageDead(_4);
+          StorageLive(_6);
+          _7 = discriminant(_3);
+          switchInt(move _7) -> [0: bb4, 1: bb6, otherwise: bb5];
+      }
+  
+      bb4: {
+          _6 = const 0_u8;
+          goto -> bb7;
+      }
+  
+      bb5: {
+          unreachable;
+      }
+  
+      bb6: {
+          StorageLive(_8);
+          _8 = ((_3 as Some).0: u8);
+          _6 = _8;
+          StorageDead(_8);
+          goto -> bb7;
+      }
+  
+      bb7: {
+          StorageLive(_9);
+          _9 = _6;
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_6);
+          StorageDead(_3);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.32bit.diff
index 960e69ee916..960e69ee916 100644
--- a/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.32bit.diff
diff --git a/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..960e69ee916
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.mutate_discriminant.DataflowConstProp.64bit.diff
@@ -0,0 +1,26 @@
+- // MIR for `mutate_discriminant` before DataflowConstProp
++ // MIR for `mutate_discriminant` after DataflowConstProp
+  
+  fn mutate_discriminant() -> u8 {
+      let mut _0: u8;
+      let mut _1: std::option::Option<NonZeroUsize>;
+      let mut _2: isize;
+  
+      bb0: {
+          discriminant(_1) = 1;
+          (((_1 as variant#1).0: NonZeroUsize).0: usize) = const 0_usize;
+          _2 = discriminant(_1);
+          switchInt(_2) -> [0: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          _0 = const 1_u8;
+          return;
+      }
+  
+      bb2: {
+          _0 = const 2_u8;
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.rs b/tests/mir-opt/dataflow-const-prop/enum.rs
index 79a20d7ef45..5a10e9e883d 100644
--- a/tests/mir-opt/dataflow-const-prop/enum.rs
+++ b/tests/mir-opt/dataflow-const-prop/enum.rs
@@ -1,9 +1,11 @@
 // unit-test: DataflowConstProp
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
 
 #![feature(custom_mir, core_intrinsics, rustc_attrs)]
 
 use std::intrinsics::mir::*;
 
+#[derive(Copy, Clone)]
 enum E {
     V1(i32),
     V2(i32)
@@ -15,6 +17,24 @@ fn simple() {
     let x = match e { E::V1(x) => x, E::V2(x) => x };
 }
 
+// EMIT_MIR enum.constant.DataflowConstProp.diff
+fn constant() {
+    const C: E = E::V1(0);
+    let e = C;
+    let x = match e { E::V1(x) => x, E::V2(x) => x };
+}
+
+// EMIT_MIR enum.statics.DataflowConstProp.diff
+fn statics() {
+    static C: E = E::V1(0);
+    let e = C;
+    let x = match e { E::V1(x) => x, E::V2(x) => x };
+
+    static RC: &E = &E::V2(4);
+    let e = RC;
+    let x = match e { E::V1(x) => x, E::V2(x) => x };
+}
+
 #[rustc_layout_scalar_valid_range_start(1)]
 #[rustc_nonnull_optimization_guaranteed]
 struct NonZeroUsize(usize);
@@ -63,6 +83,8 @@ fn multiple(x: bool, i: u8) {
 
 fn main() {
     simple();
+    constant();
+    statics();
     mutate_discriminant();
     multiple(false, 5);
 }
diff --git a/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.32bit.diff
index 3946e7c7d96..3946e7c7d96 100644
--- a/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.32bit.diff
diff --git a/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..3946e7c7d96
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.simple.DataflowConstProp.64bit.diff
@@ -0,0 +1,63 @@
+- // MIR for `simple` before DataflowConstProp
++ // MIR for `simple` after DataflowConstProp
+  
+  fn simple() -> () {
+      let mut _0: ();
+      let _1: E;
+      let mut _3: isize;
+      scope 1 {
+          debug e => _1;
+          let _2: i32;
+          let _4: i32;
+          let _5: i32;
+          scope 2 {
+              debug x => _2;
+          }
+          scope 3 {
+              debug x => _4;
+          }
+          scope 4 {
+              debug x => _5;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = E::V1(const 0_i32);
+          StorageLive(_2);
+-         _3 = discriminant(_1);
+-         switchInt(move _3) -> [0: bb3, 1: bb1, otherwise: bb2];
++         _3 = const 0_isize;
++         switchInt(const 0_isize) -> [0: bb3, 1: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          StorageLive(_5);
+          _5 = ((_1 as V2).0: i32);
+          _2 = _5;
+          StorageDead(_5);
+          goto -> bb4;
+      }
+  
+      bb2: {
+          unreachable;
+      }
+  
+      bb3: {
+          StorageLive(_4);
+-         _4 = ((_1 as V1).0: i32);
+-         _2 = _4;
++         _4 = const 0_i32;
++         _2 = const 0_i32;
+          StorageDead(_4);
+          goto -> bb4;
+      }
+  
+      bb4: {
+          _0 = const ();
+          StorageDead(_2);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..ae8b44c953e
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.32bit.diff
@@ -0,0 +1,126 @@
+- // MIR for `statics` before DataflowConstProp
++ // MIR for `statics` after DataflowConstProp
+  
+  fn statics() -> () {
+      let mut _0: ();
+      let _1: E;
+      let mut _2: &E;
+      let mut _4: isize;
+      let mut _8: &&E;
+      let mut _10: isize;
+      scope 1 {
+          debug e => _1;
+          let _3: i32;
+          let _5: i32;
+          let _6: i32;
+          scope 2 {
+              debug x => _3;
+              let _7: &E;
+              scope 5 {
+                  debug e => _7;
+                  let _9: &i32;
+                  let _11: &i32;
+                  let _12: &i32;
+                  scope 6 {
+                      debug x => _9;
+                  }
+                  scope 7 {
+                      debug x => _11;
+                  }
+                  scope 8 {
+                      debug x => _12;
+                  }
+              }
+          }
+          scope 3 {
+              debug x => _5;
+          }
+          scope 4 {
+              debug x => _6;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = const {alloc1: &E};
+          _1 = (*_2);
+          StorageDead(_2);
+          StorageLive(_3);
+-         _4 = discriminant(_1);
+-         switchInt(move _4) -> [0: bb3, 1: bb1, otherwise: bb2];
++         _4 = const 0_isize;
++         switchInt(const 0_isize) -> [0: bb3, 1: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          StorageLive(_6);
+          _6 = ((_1 as V2).0: i32);
+          _3 = _6;
+          StorageDead(_6);
+          goto -> bb4;
+      }
+  
+      bb2: {
+          unreachable;
+      }
+  
+      bb3: {
+          StorageLive(_5);
+-         _5 = ((_1 as V1).0: i32);
+-         _3 = _5;
++         _5 = const 0_i32;
++         _3 = const 0_i32;
+          StorageDead(_5);
+          goto -> bb4;
+      }
+  
+      bb4: {
+          StorageLive(_7);
+          StorageLive(_8);
+          _8 = const {alloc2: &&E};
+          _7 = (*_8);
+          StorageDead(_8);
+          StorageLive(_9);
+          _10 = discriminant((*_7));
+          switchInt(move _10) -> [0: bb6, 1: bb5, otherwise: bb2];
+      }
+  
+      bb5: {
+          StorageLive(_12);
+          _12 = &(((*_7) as V2).0: i32);
+          _9 = &(*_12);
+          StorageDead(_12);
+          goto -> bb7;
+      }
+  
+      bb6: {
+          StorageLive(_11);
+          _11 = &(((*_7) as V1).0: i32);
+          _9 = _11;
+          StorageDead(_11);
+          goto -> bb7;
+      }
+  
+      bb7: {
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_7);
+          StorageDead(_3);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
+  alloc2 (static: RC, size: 4, align: 4) {
+      ╾─alloc14─╼                                     │ ╾──╼
+  }
+  
+  alloc14 (size: 8, align: 4) {
+      01 00 00 00 04 00 00 00                         │ ........
+  }
+  
+  alloc1 (static: statics::C, size: 8, align: 4) {
+      00 00 00 00 00 00 00 00                         │ ........
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..63799b3bac3
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/enum.statics.DataflowConstProp.64bit.diff
@@ -0,0 +1,126 @@
+- // MIR for `statics` before DataflowConstProp
++ // MIR for `statics` after DataflowConstProp
+  
+  fn statics() -> () {
+      let mut _0: ();
+      let _1: E;
+      let mut _2: &E;
+      let mut _4: isize;
+      let mut _8: &&E;
+      let mut _10: isize;
+      scope 1 {
+          debug e => _1;
+          let _3: i32;
+          let _5: i32;
+          let _6: i32;
+          scope 2 {
+              debug x => _3;
+              let _7: &E;
+              scope 5 {
+                  debug e => _7;
+                  let _9: &i32;
+                  let _11: &i32;
+                  let _12: &i32;
+                  scope 6 {
+                      debug x => _9;
+                  }
+                  scope 7 {
+                      debug x => _11;
+                  }
+                  scope 8 {
+                      debug x => _12;
+                  }
+              }
+          }
+          scope 3 {
+              debug x => _5;
+          }
+          scope 4 {
+              debug x => _6;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = const {alloc1: &E};
+          _1 = (*_2);
+          StorageDead(_2);
+          StorageLive(_3);
+-         _4 = discriminant(_1);
+-         switchInt(move _4) -> [0: bb3, 1: bb1, otherwise: bb2];
++         _4 = const 0_isize;
++         switchInt(const 0_isize) -> [0: bb3, 1: bb1, otherwise: bb2];
+      }
+  
+      bb1: {
+          StorageLive(_6);
+          _6 = ((_1 as V2).0: i32);
+          _3 = _6;
+          StorageDead(_6);
+          goto -> bb4;
+      }
+  
+      bb2: {
+          unreachable;
+      }
+  
+      bb3: {
+          StorageLive(_5);
+-         _5 = ((_1 as V1).0: i32);
+-         _3 = _5;
++         _5 = const 0_i32;
++         _3 = const 0_i32;
+          StorageDead(_5);
+          goto -> bb4;
+      }
+  
+      bb4: {
+          StorageLive(_7);
+          StorageLive(_8);
+          _8 = const {alloc2: &&E};
+          _7 = (*_8);
+          StorageDead(_8);
+          StorageLive(_9);
+          _10 = discriminant((*_7));
+          switchInt(move _10) -> [0: bb6, 1: bb5, otherwise: bb2];
+      }
+  
+      bb5: {
+          StorageLive(_12);
+          _12 = &(((*_7) as V2).0: i32);
+          _9 = &(*_12);
+          StorageDead(_12);
+          goto -> bb7;
+      }
+  
+      bb6: {
+          StorageLive(_11);
+          _11 = &(((*_7) as V1).0: i32);
+          _9 = _11;
+          StorageDead(_11);
+          goto -> bb7;
+      }
+  
+      bb7: {
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_7);
+          StorageDead(_3);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
+  alloc2 (static: RC, size: 8, align: 8) {
+      ╾───────alloc14───────╼                         │ ╾──────╼
+  }
+  
+  alloc14 (size: 8, align: 4) {
+      01 00 00 00 04 00 00 00                         │ ........
+  }
+  
+  alloc1 (static: statics::C, size: 8, align: 4) {
+      00 00 00 00 00 00 00 00                         │ ........
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff
index 08b599f9f5d..355f28b03db 100644
--- a/tests/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff
+++ b/tests/mir-opt/dataflow-const-prop/if.main.DataflowConstProp.diff
@@ -39,19 +39,20 @@
           StorageLive(_4);
 -         _4 = _1;
 -         _3 = Eq(move _4, const 1_i32);
+-         switchInt(move _3) -> [0: bb2, otherwise: bb1];
 +         _4 = const 1_i32;
 +         _3 = const true;
-          StorageDead(_4);
--         switchInt(move _3) -> [0: bb2, otherwise: bb1];
 +         switchInt(const true) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_4);
           _2 = const 2_i32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_4);
           _2 = const 3_i32;
           goto -> bb3;
       }
@@ -70,20 +71,21 @@
           StorageLive(_9);
 -         _9 = _1;
 -         _8 = Eq(move _9, const 1_i32);
+-         switchInt(move _8) -> [0: bb5, otherwise: bb4];
 +         _9 = const 1_i32;
 +         _8 = const true;
-          StorageDead(_9);
--         switchInt(move _8) -> [0: bb5, otherwise: bb4];
 +         switchInt(const true) -> [0: bb5, otherwise: bb4];
       }
   
       bb4: {
+          StorageDead(_9);
 -         _7 = _1;
 +         _7 = const 1_i32;
           goto -> bb6;
       }
   
       bb5: {
+          StorageDead(_9);
           StorageLive(_10);
           _10 = _1;
           _7 = Add(move _10, const 1_i32);
diff --git a/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-abort.diff
new file mode 100644
index 00000000000..6c612d46725
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-abort.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u8;
+      let mut _2: [u8; 5000];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u8; 5000];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind unreachable];
++         _4 = const 5000_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 5000_usize, const 2_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-unwind.diff
new file mode 100644
index 00000000000..87024da2628
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.32bit.panic-unwind.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u8;
+      let mut _2: [u8; 5000];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u8; 5000];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind continue];
++         _4 = const 5000_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 5000_usize, const 2_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-abort.diff
new file mode 100644
index 00000000000..6c612d46725
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-abort.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u8;
+      let mut _2: [u8; 5000];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u8; 5000];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind unreachable];
++         _4 = const 5000_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 5000_usize, const 2_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-unwind.diff
new file mode 100644
index 00000000000..87024da2628
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/large_array_index.main.DataflowConstProp.64bit.panic-unwind.diff
@@ -0,0 +1,39 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u8;
+      let mut _2: [u8; 5000];
+      let _3: usize;
+      let mut _4: usize;
+      let mut _5: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = [const 0_u8; 5000];
+          StorageLive(_3);
+          _3 = const 2_usize;
+-         _4 = Len(_2);
+-         _5 = Lt(_3, _4);
+-         assert(move _5, "index out of bounds: the length is {} but the index is {}", move _4, _3) -> [success: bb1, unwind continue];
++         _4 = const 5000_usize;
++         _5 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 5000_usize, const 2_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _1 = _2[_3];
++         _1 = _2[2 of 3];
+          StorageDead(_3);
+          StorageDead(_2);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/large_array_index.rs b/tests/mir-opt/dataflow-const-prop/large_array_index.rs
new file mode 100644
index 00000000000..af13c7d1020
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/large_array_index.rs
@@ -0,0 +1,9 @@
+// unit-test: DataflowConstProp
+// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
+
+// EMIT_MIR large_array_index.main.DataflowConstProp.diff
+fn main() {
+    // check that we don't propagate this, because it's too large
+    let x: u8 = [0_u8; 5000][2];
+}
diff --git a/tests/mir-opt/dataflow-const-prop/mult_by_zero.rs b/tests/mir-opt/dataflow-const-prop/mult_by_zero.rs
new file mode 100644
index 00000000000..dbea1480445
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/mult_by_zero.rs
@@ -0,0 +1,10 @@
+// unit-test: DataflowConstProp
+
+// EMIT_MIR mult_by_zero.test.DataflowConstProp.diff
+fn test(x : i32) -> i32 {
+  x * 0
+}
+
+fn main() {
+    test(10);
+}
diff --git a/tests/mir-opt/dataflow-const-prop/mult_by_zero.test.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/mult_by_zero.test.DataflowConstProp.diff
new file mode 100644
index 00000000000..91bc10a562f
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/mult_by_zero.test.DataflowConstProp.diff
@@ -0,0 +1,18 @@
+- // MIR for `test` before DataflowConstProp
++ // MIR for `test` after DataflowConstProp
+  
+  fn test(_1: i32) -> i32 {
+      debug x => _1;
+      let mut _0: i32;
+      let mut _2: i32;
+  
+      bb0: {
+          StorageLive(_2);
+          _2 = _1;
+-         _0 = Mul(move _2, const 0_i32);
++         _0 = const 0_i32;
+          StorageDead(_2);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-abort.diff
new file mode 100644
index 00000000000..c61414b6541
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-abort.diff
@@ -0,0 +1,76 @@
+- // MIR for `concrete` before DataflowConstProp
++ // MIR for `concrete` after DataflowConstProp
+  
+  fn concrete() -> () {
+      let mut _0: ();
+      let _1: usize;
+      let mut _2: usize;
+      let mut _4: usize;
+      let mut _6: usize;
+      let mut _8: usize;
+      scope 1 {
+          debug x => _1;
+          let _3: usize;
+          scope 2 {
+              debug y => _3;
+              let _5: usize;
+              scope 3 {
+                  debug z0 => _5;
+                  let _7: usize;
+                  scope 4 {
+                      debug z1 => _7;
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+-         _2 = OffsetOf(Alpha, [0]);
+-         _1 = must_use::<usize>(move _2) -> [return: bb1, unwind unreachable];
++         _2 = const 4_usize;
++         _1 = must_use::<usize>(const 4_usize) -> [return: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+          StorageDead(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+-         _4 = OffsetOf(Alpha, [1]);
+-         _3 = must_use::<usize>(move _4) -> [return: bb2, unwind unreachable];
++         _4 = const 0_usize;
++         _3 = must_use::<usize>(const 0_usize) -> [return: bb2, unwind unreachable];
+      }
+  
+      bb2: {
+          StorageDead(_4);
+          StorageLive(_5);
+          StorageLive(_6);
+-         _6 = OffsetOf(Alpha, [2, 0]);
+-         _5 = must_use::<usize>(move _6) -> [return: bb3, unwind unreachable];
++         _6 = const 2_usize;
++         _5 = must_use::<usize>(const 2_usize) -> [return: bb3, unwind unreachable];
+      }
+  
+      bb3: {
+          StorageDead(_6);
+          StorageLive(_7);
+          StorageLive(_8);
+-         _8 = OffsetOf(Alpha, [2, 1]);
+-         _7 = must_use::<usize>(move _8) -> [return: bb4, unwind unreachable];
++         _8 = const 3_usize;
++         _7 = must_use::<usize>(const 3_usize) -> [return: bb4, unwind unreachable];
+      }
+  
+      bb4: {
+          StorageDead(_8);
+          _0 = const ();
+          StorageDead(_7);
+          StorageDead(_5);
+          StorageDead(_3);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-unwind.diff
new file mode 100644
index 00000000000..0c3939a3456
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/offset_of.concrete.DataflowConstProp.panic-unwind.diff
@@ -0,0 +1,76 @@
+- // MIR for `concrete` before DataflowConstProp
++ // MIR for `concrete` after DataflowConstProp
+  
+  fn concrete() -> () {
+      let mut _0: ();
+      let _1: usize;
+      let mut _2: usize;
+      let mut _4: usize;
+      let mut _6: usize;
+      let mut _8: usize;
+      scope 1 {
+          debug x => _1;
+          let _3: usize;
+          scope 2 {
+              debug y => _3;
+              let _5: usize;
+              scope 3 {
+                  debug z0 => _5;
+                  let _7: usize;
+                  scope 4 {
+                      debug z1 => _7;
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+-         _2 = OffsetOf(Alpha, [0]);
+-         _1 = must_use::<usize>(move _2) -> [return: bb1, unwind continue];
++         _2 = const 4_usize;
++         _1 = must_use::<usize>(const 4_usize) -> [return: bb1, unwind continue];
+      }
+  
+      bb1: {
+          StorageDead(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+-         _4 = OffsetOf(Alpha, [1]);
+-         _3 = must_use::<usize>(move _4) -> [return: bb2, unwind continue];
++         _4 = const 0_usize;
++         _3 = must_use::<usize>(const 0_usize) -> [return: bb2, unwind continue];
+      }
+  
+      bb2: {
+          StorageDead(_4);
+          StorageLive(_5);
+          StorageLive(_6);
+-         _6 = OffsetOf(Alpha, [2, 0]);
+-         _5 = must_use::<usize>(move _6) -> [return: bb3, unwind continue];
++         _6 = const 2_usize;
++         _5 = must_use::<usize>(const 2_usize) -> [return: bb3, unwind continue];
+      }
+  
+      bb3: {
+          StorageDead(_6);
+          StorageLive(_7);
+          StorageLive(_8);
+-         _8 = OffsetOf(Alpha, [2, 1]);
+-         _7 = must_use::<usize>(move _8) -> [return: bb4, unwind continue];
++         _8 = const 3_usize;
++         _7 = must_use::<usize>(const 3_usize) -> [return: bb4, unwind continue];
+      }
+  
+      bb4: {
+          StorageDead(_8);
+          _0 = const ();
+          StorageDead(_7);
+          StorageDead(_5);
+          StorageDead(_3);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-abort.diff
new file mode 100644
index 00000000000..d54d4687060
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-abort.diff
@@ -0,0 +1,72 @@
+- // MIR for `generic` before DataflowConstProp
++ // MIR for `generic` after DataflowConstProp
+  
+  fn generic() -> () {
+      let mut _0: ();
+      let _1: usize;
+      let mut _2: usize;
+      let mut _4: usize;
+      let mut _6: usize;
+      let mut _8: usize;
+      scope 1 {
+          debug gx => _1;
+          let _3: usize;
+          scope 2 {
+              debug gy => _3;
+              let _5: usize;
+              scope 3 {
+                  debug dx => _5;
+                  let _7: usize;
+                  scope 4 {
+                      debug dy => _7;
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = OffsetOf(Gamma<T>, [0]);
+          _1 = must_use::<usize>(move _2) -> [return: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+          StorageDead(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+          _4 = OffsetOf(Gamma<T>, [1]);
+          _3 = must_use::<usize>(move _4) -> [return: bb2, unwind unreachable];
+      }
+  
+      bb2: {
+          StorageDead(_4);
+          StorageLive(_5);
+          StorageLive(_6);
+-         _6 = OffsetOf(Delta<T>, [1]);
+-         _5 = must_use::<usize>(move _6) -> [return: bb3, unwind unreachable];
++         _6 = const 0_usize;
++         _5 = must_use::<usize>(const 0_usize) -> [return: bb3, unwind unreachable];
+      }
+  
+      bb3: {
+          StorageDead(_6);
+          StorageLive(_7);
+          StorageLive(_8);
+-         _8 = OffsetOf(Delta<T>, [2]);
+-         _7 = must_use::<usize>(move _8) -> [return: bb4, unwind unreachable];
++         _8 = const 2_usize;
++         _7 = must_use::<usize>(const 2_usize) -> [return: bb4, unwind unreachable];
+      }
+  
+      bb4: {
+          StorageDead(_8);
+          _0 = const ();
+          StorageDead(_7);
+          StorageDead(_5);
+          StorageDead(_3);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-unwind.diff
new file mode 100644
index 00000000000..6032a2274ef
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/offset_of.generic.DataflowConstProp.panic-unwind.diff
@@ -0,0 +1,72 @@
+- // MIR for `generic` before DataflowConstProp
++ // MIR for `generic` after DataflowConstProp
+  
+  fn generic() -> () {
+      let mut _0: ();
+      let _1: usize;
+      let mut _2: usize;
+      let mut _4: usize;
+      let mut _6: usize;
+      let mut _8: usize;
+      scope 1 {
+          debug gx => _1;
+          let _3: usize;
+          scope 2 {
+              debug gy => _3;
+              let _5: usize;
+              scope 3 {
+                  debug dx => _5;
+                  let _7: usize;
+                  scope 4 {
+                      debug dy => _7;
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = OffsetOf(Gamma<T>, [0]);
+          _1 = must_use::<usize>(move _2) -> [return: bb1, unwind continue];
+      }
+  
+      bb1: {
+          StorageDead(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+          _4 = OffsetOf(Gamma<T>, [1]);
+          _3 = must_use::<usize>(move _4) -> [return: bb2, unwind continue];
+      }
+  
+      bb2: {
+          StorageDead(_4);
+          StorageLive(_5);
+          StorageLive(_6);
+-         _6 = OffsetOf(Delta<T>, [1]);
+-         _5 = must_use::<usize>(move _6) -> [return: bb3, unwind continue];
++         _6 = const 0_usize;
++         _5 = must_use::<usize>(const 0_usize) -> [return: bb3, unwind continue];
+      }
+  
+      bb3: {
+          StorageDead(_6);
+          StorageLive(_7);
+          StorageLive(_8);
+-         _8 = OffsetOf(Delta<T>, [2]);
+-         _7 = must_use::<usize>(move _8) -> [return: bb4, unwind continue];
++         _8 = const 2_usize;
++         _7 = must_use::<usize>(const 2_usize) -> [return: bb4, unwind continue];
+      }
+  
+      bb4: {
+          StorageDead(_8);
+          _0 = const ();
+          StorageDead(_7);
+          StorageDead(_5);
+          StorageDead(_3);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/offset_of.rs b/tests/mir-opt/dataflow-const-prop/offset_of.rs
new file mode 100644
index 00000000000..ccc90790e52
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/offset_of.rs
@@ -0,0 +1,49 @@
+// unit-test: DataflowConstProp
+// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
+
+#![feature(offset_of)]
+
+use std::marker::PhantomData;
+use std::mem::offset_of;
+
+struct Alpha {
+    x: u8,
+    y: u16,
+    z: Beta,
+}
+
+struct Beta(u8, u8);
+
+struct Gamma<T> {
+    x: u8,
+    y: u16,
+    _t: T,
+}
+
+#[repr(C)]
+struct Delta<T> {
+    _phantom: PhantomData<T>,
+    x: u8,
+    y: u16,
+}
+
+// EMIT_MIR offset_of.concrete.DataflowConstProp.diff
+fn concrete() {
+    let x = offset_of!(Alpha, x);
+    let y = offset_of!(Alpha, y);
+    let z0 = offset_of!(Alpha, z.0);
+    let z1 = offset_of!(Alpha, z.1);
+}
+
+// EMIT_MIR offset_of.generic.DataflowConstProp.diff
+fn generic<T>() {
+    let gx = offset_of!(Gamma<T>, x);
+    let gy = offset_of!(Gamma<T>, y);
+    let dx = offset_of!(Delta<T>, x);
+    let dy = offset_of!(Delta<T>, y);
+}
+
+fn main() {
+    concrete();
+    generic::<()>();
+}
diff --git a/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-abort.diff
new file mode 100644
index 00000000000..a18ef6c9db7
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-abort.diff
@@ -0,0 +1,43 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: u32;
+      let mut _3: [u32; 8];
+      let _4: usize;
+      let mut _5: usize;
+      let mut _6: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          _3 = [const 42_u32; 8];
+          StorageLive(_4);
+          _4 = const 2_usize;
+-         _5 = Len(_3);
+-         _6 = Lt(_4, _5);
+-         assert(move _6, "index out of bounds: the length is {} but the index is {}", move _5, _4) -> [success: bb1, unwind unreachable];
++         _5 = const 8_usize;
++         _6 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 8_usize, const 2_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _2 = _3[_4];
++         _2 = _3[2 of 3];
+          _1 = Add(move _2, const 0_u32);
+          StorageDead(_2);
+          StorageDead(_4);
+          StorageDead(_3);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-unwind.diff
new file mode 100644
index 00000000000..3356ef98b14
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.32bit.panic-unwind.diff
@@ -0,0 +1,43 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: u32;
+      let mut _3: [u32; 8];
+      let _4: usize;
+      let mut _5: usize;
+      let mut _6: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          _3 = [const 42_u32; 8];
+          StorageLive(_4);
+          _4 = const 2_usize;
+-         _5 = Len(_3);
+-         _6 = Lt(_4, _5);
+-         assert(move _6, "index out of bounds: the length is {} but the index is {}", move _5, _4) -> [success: bb1, unwind continue];
++         _5 = const 8_usize;
++         _6 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 8_usize, const 2_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _2 = _3[_4];
++         _2 = _3[2 of 3];
+          _1 = Add(move _2, const 0_u32);
+          StorageDead(_2);
+          StorageDead(_4);
+          StorageDead(_3);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-abort.diff
new file mode 100644
index 00000000000..a18ef6c9db7
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-abort.diff
@@ -0,0 +1,43 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: u32;
+      let mut _3: [u32; 8];
+      let _4: usize;
+      let mut _5: usize;
+      let mut _6: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          _3 = [const 42_u32; 8];
+          StorageLive(_4);
+          _4 = const 2_usize;
+-         _5 = Len(_3);
+-         _6 = Lt(_4, _5);
+-         assert(move _6, "index out of bounds: the length is {} but the index is {}", move _5, _4) -> [success: bb1, unwind unreachable];
++         _5 = const 8_usize;
++         _6 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 8_usize, const 2_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _2 = _3[_4];
++         _2 = _3[2 of 3];
+          _1 = Add(move _2, const 0_u32);
+          StorageDead(_2);
+          StorageDead(_4);
+          StorageDead(_3);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-unwind.diff
new file mode 100644
index 00000000000..3356ef98b14
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/repeat.main.DataflowConstProp.64bit.panic-unwind.diff
@@ -0,0 +1,43 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: u32;
+      let mut _3: [u32; 8];
+      let _4: usize;
+      let mut _5: usize;
+      let mut _6: bool;
+      scope 1 {
+          debug x => _1;
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          _3 = [const 42_u32; 8];
+          StorageLive(_4);
+          _4 = const 2_usize;
+-         _5 = Len(_3);
+-         _6 = Lt(_4, _5);
+-         assert(move _6, "index out of bounds: the length is {} but the index is {}", move _5, _4) -> [success: bb1, unwind continue];
++         _5 = const 8_usize;
++         _6 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 8_usize, const 2_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _2 = _3[_4];
++         _2 = _3[2 of 3];
+          _1 = Add(move _2, const 0_u32);
+          StorageDead(_2);
+          StorageDead(_4);
+          StorageDead(_3);
+          _0 = const ();
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/repeat.rs b/tests/mir-opt/dataflow-const-prop/repeat.rs
new file mode 100644
index 00000000000..9fa353e44c5
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/repeat.rs
@@ -0,0 +1,8 @@
+// unit-test: DataflowConstProp
+// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
+
+// EMIT_MIR repeat.main.DataflowConstProp.diff
+fn main() {
+    let x: u32 = [42; 8][2] + 0;
+}
diff --git a/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-abort.diff
new file mode 100644
index 00000000000..e99b413f708
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-abort.diff
@@ -0,0 +1,77 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: &[u32];
+      let mut _3: &[u32; 3];
+      let _4: &[u32; 3];
+      let _5: [u32; 3];
+      let _6: usize;
+      let mut _7: usize;
+      let mut _8: bool;
+      let mut _10: &[u32];
+      let _11: usize;
+      let mut _12: usize;
+      let mut _13: bool;
+      let mut _14: &[u32; 3];
+      scope 1 {
+          debug local => _1;
+          let _9: u32;
+          scope 2 {
+              debug constant => _9;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+          _14 = const _;
+          _4 = _14;
+          _3 = _4;
+          _2 = move _3 as &[u32] (PointerCoercion(Unsize));
+          StorageDead(_3);
+          StorageLive(_6);
+          _6 = const 1_usize;
+-         _7 = Len((*_2));
+-         _8 = Lt(_6, _7);
+-         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind unreachable];
++         _7 = const 3_usize;
++         _8 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _1 = (*_2)[_6];
++         _1 = (*_2)[1 of 2];
+          StorageDead(_6);
+          StorageDead(_4);
+          StorageDead(_2);
+          StorageLive(_9);
+          StorageLive(_10);
+          _10 = const _;
+          StorageLive(_11);
+          _11 = const 1_usize;
+-         _12 = Len((*_10));
+-         _13 = Lt(_11, _12);
+-         assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, _11) -> [success: bb2, unwind unreachable];
++         _12 = const 3_usize;
++         _13 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb2, unwind unreachable];
+      }
+  
+      bb2: {
+-         _9 = (*_10)[_11];
++         _9 = (*_10)[1 of 2];
+          StorageDead(_11);
+          StorageDead(_10);
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-unwind.diff
new file mode 100644
index 00000000000..759a793fbf3
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.32bit.panic-unwind.diff
@@ -0,0 +1,77 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: &[u32];
+      let mut _3: &[u32; 3];
+      let _4: &[u32; 3];
+      let _5: [u32; 3];
+      let _6: usize;
+      let mut _7: usize;
+      let mut _8: bool;
+      let mut _10: &[u32];
+      let _11: usize;
+      let mut _12: usize;
+      let mut _13: bool;
+      let mut _14: &[u32; 3];
+      scope 1 {
+          debug local => _1;
+          let _9: u32;
+          scope 2 {
+              debug constant => _9;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+          _14 = const _;
+          _4 = _14;
+          _3 = _4;
+          _2 = move _3 as &[u32] (PointerCoercion(Unsize));
+          StorageDead(_3);
+          StorageLive(_6);
+          _6 = const 1_usize;
+-         _7 = Len((*_2));
+-         _8 = Lt(_6, _7);
+-         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind continue];
++         _7 = const 3_usize;
++         _8 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _1 = (*_2)[_6];
++         _1 = (*_2)[1 of 2];
+          StorageDead(_6);
+          StorageDead(_4);
+          StorageDead(_2);
+          StorageLive(_9);
+          StorageLive(_10);
+          _10 = const _;
+          StorageLive(_11);
+          _11 = const 1_usize;
+-         _12 = Len((*_10));
+-         _13 = Lt(_11, _12);
+-         assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, _11) -> [success: bb2, unwind continue];
++         _12 = const 3_usize;
++         _13 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb2, unwind continue];
+      }
+  
+      bb2: {
+-         _9 = (*_10)[_11];
++         _9 = (*_10)[1 of 2];
+          StorageDead(_11);
+          StorageDead(_10);
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-abort.diff b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-abort.diff
new file mode 100644
index 00000000000..e99b413f708
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-abort.diff
@@ -0,0 +1,77 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: &[u32];
+      let mut _3: &[u32; 3];
+      let _4: &[u32; 3];
+      let _5: [u32; 3];
+      let _6: usize;
+      let mut _7: usize;
+      let mut _8: bool;
+      let mut _10: &[u32];
+      let _11: usize;
+      let mut _12: usize;
+      let mut _13: bool;
+      let mut _14: &[u32; 3];
+      scope 1 {
+          debug local => _1;
+          let _9: u32;
+          scope 2 {
+              debug constant => _9;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+          _14 = const _;
+          _4 = _14;
+          _3 = _4;
+          _2 = move _3 as &[u32] (PointerCoercion(Unsize));
+          StorageDead(_3);
+          StorageLive(_6);
+          _6 = const 1_usize;
+-         _7 = Len((*_2));
+-         _8 = Lt(_6, _7);
+-         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind unreachable];
++         _7 = const 3_usize;
++         _8 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb1, unwind unreachable];
+      }
+  
+      bb1: {
+-         _1 = (*_2)[_6];
++         _1 = (*_2)[1 of 2];
+          StorageDead(_6);
+          StorageDead(_4);
+          StorageDead(_2);
+          StorageLive(_9);
+          StorageLive(_10);
+          _10 = const _;
+          StorageLive(_11);
+          _11 = const 1_usize;
+-         _12 = Len((*_10));
+-         _13 = Lt(_11, _12);
+-         assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, _11) -> [success: bb2, unwind unreachable];
++         _12 = const 3_usize;
++         _13 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb2, unwind unreachable];
+      }
+  
+      bb2: {
+-         _9 = (*_10)[_11];
++         _9 = (*_10)[1 of 2];
+          StorageDead(_11);
+          StorageDead(_10);
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-unwind.diff b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-unwind.diff
new file mode 100644
index 00000000000..759a793fbf3
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/slice_len.main.DataflowConstProp.64bit.panic-unwind.diff
@@ -0,0 +1,77 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let _1: u32;
+      let mut _2: &[u32];
+      let mut _3: &[u32; 3];
+      let _4: &[u32; 3];
+      let _5: [u32; 3];
+      let _6: usize;
+      let mut _7: usize;
+      let mut _8: bool;
+      let mut _10: &[u32];
+      let _11: usize;
+      let mut _12: usize;
+      let mut _13: bool;
+      let mut _14: &[u32; 3];
+      scope 1 {
+          debug local => _1;
+          let _9: u32;
+          scope 2 {
+              debug constant => _9;
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          StorageLive(_3);
+          StorageLive(_4);
+          _14 = const _;
+          _4 = _14;
+          _3 = _4;
+          _2 = move _3 as &[u32] (PointerCoercion(Unsize));
+          StorageDead(_3);
+          StorageLive(_6);
+          _6 = const 1_usize;
+-         _7 = Len((*_2));
+-         _8 = Lt(_6, _7);
+-         assert(move _8, "index out of bounds: the length is {} but the index is {}", move _7, _6) -> [success: bb1, unwind continue];
++         _7 = const 3_usize;
++         _8 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb1, unwind continue];
+      }
+  
+      bb1: {
+-         _1 = (*_2)[_6];
++         _1 = (*_2)[1 of 2];
+          StorageDead(_6);
+          StorageDead(_4);
+          StorageDead(_2);
+          StorageLive(_9);
+          StorageLive(_10);
+          _10 = const _;
+          StorageLive(_11);
+          _11 = const 1_usize;
+-         _12 = Len((*_10));
+-         _13 = Lt(_11, _12);
+-         assert(move _13, "index out of bounds: the length is {} but the index is {}", move _12, _11) -> [success: bb2, unwind continue];
++         _12 = const 3_usize;
++         _13 = const true;
++         assert(const true, "index out of bounds: the length is {} but the index is {}", const 3_usize, const 1_usize) -> [success: bb2, unwind continue];
+      }
+  
+      bb2: {
+-         _9 = (*_10)[_11];
++         _9 = (*_10)[1 of 2];
+          StorageDead(_11);
+          StorageDead(_10);
+          _0 = const ();
+          StorageDead(_9);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/slice_len.rs b/tests/mir-opt/dataflow-const-prop/slice_len.rs
new file mode 100644
index 00000000000..41367e48497
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/slice_len.rs
@@ -0,0 +1,12 @@
+// EMIT_MIR_FOR_EACH_PANIC_STRATEGY
+// unit-test: DataflowConstProp
+// compile-flags: -Zmir-enable-passes=+InstSimplify
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
+
+// EMIT_MIR slice_len.main.DataflowConstProp.diff
+fn main() {
+    let local = (&[1u32, 2, 3] as &[u32])[1];
+
+    const SLICE: &[u32] = &[1, 2, 3];
+    let constant = SLICE[1];
+}
diff --git a/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..2de6ba307d5
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.32bit.diff
@@ -0,0 +1,129 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let mut _1: S;
+      let mut _3: i32;
+      let mut _5: i32;
+      let mut _6: i32;
+      let mut _11: BigStruct;
+      let mut _16: &&BigStruct;
+      let mut _17: &BigStruct;
+      let mut _18: &BigStruct;
+      let mut _19: &BigStruct;
+      let mut _20: &BigStruct;
+      let mut _21: &BigStruct;
+      scope 1 {
+          debug s => _1;
+          let _2: i32;
+          scope 2 {
+              debug a => _2;
+              let _4: i32;
+              scope 3 {
+                  debug b => _4;
+                  let _7: S;
+                  let _8: u8;
+                  let _9: f32;
+                  let _10: S;
+                  scope 4 {
+                      debug a => _7;
+                      debug b => _8;
+                      debug c => _9;
+                      debug d => _10;
+                      let _12: S;
+                      let _13: u8;
+                      let _14: f32;
+                      let _15: S;
+                      scope 5 {
+                          debug a => _12;
+                          debug b => _13;
+                          debug c => _14;
+                          debug d => _15;
+                      }
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = S(const 1_i32);
+          StorageLive(_2);
+          StorageLive(_3);
+-         _3 = (_1.0: i32);
+-         _2 = Add(move _3, const 2_i32);
++         _3 = const 1_i32;
++         _2 = const 3_i32;
+          StorageDead(_3);
+          (_1.0: i32) = const 3_i32;
+          StorageLive(_4);
+          StorageLive(_5);
+-         _5 = _2;
++         _5 = const 3_i32;
+          StorageLive(_6);
+-         _6 = (_1.0: i32);
+-         _4 = Add(move _5, move _6);
++         _6 = const 3_i32;
++         _4 = const 6_i32;
+          StorageDead(_6);
+          StorageDead(_5);
+          StorageLive(_11);
+          _11 = const _;
+          StorageLive(_7);
+-         _7 = (_11.0: S);
++         _7 = const S(1_i32);
+          StorageLive(_8);
+-         _8 = (_11.1: u8);
++         _8 = const 5_u8;
+          StorageLive(_9);
+-         _9 = (_11.2: f32);
++         _9 = const 7f32;
+          StorageLive(_10);
+-         _10 = (_11.3: S);
++         _10 = const S(13_i32);
+          StorageDead(_11);
+          StorageLive(_16);
+          _16 = const {alloc1: &&BigStruct};
+          _17 = deref_copy (*_16);
+          StorageLive(_12);
+          _18 = deref_copy (*_16);
+-         _12 = ((*_18).0: S);
++         _12 = const S(1_i32);
+          StorageLive(_13);
+          _19 = deref_copy (*_16);
+-         _13 = ((*_19).1: u8);
++         _13 = const 5_u8;
+          StorageLive(_14);
+          _20 = deref_copy (*_16);
+-         _14 = ((*_20).2: f32);
++         _14 = const 7f32;
+          StorageLive(_15);
+          _21 = deref_copy (*_16);
+-         _15 = ((*_21).3: S);
++         _15 = const S(13_i32);
+          StorageDead(_16);
+          _0 = const ();
+          StorageDead(_15);
+          StorageDead(_14);
+          StorageDead(_13);
+          StorageDead(_12);
+          StorageDead(_10);
+          StorageDead(_9);
+          StorageDead(_8);
+          StorageDead(_7);
+          StorageDead(_4);
+          StorageDead(_2);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
+  alloc1 (static: STAT, size: 4, align: 4) {
+      ╾─alloc15─╼                                     │ ╾──╼
+  }
+  
+  alloc15 (size: 16, align: 4) {
+      01 00 00 00 00 00 e0 40 0d 00 00 00 05 __ __ __ │ .......@.....░░░
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..71a28f2165b
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.64bit.diff
@@ -0,0 +1,129 @@
+- // MIR for `main` before DataflowConstProp
++ // MIR for `main` after DataflowConstProp
+  
+  fn main() -> () {
+      let mut _0: ();
+      let mut _1: S;
+      let mut _3: i32;
+      let mut _5: i32;
+      let mut _6: i32;
+      let mut _11: BigStruct;
+      let mut _16: &&BigStruct;
+      let mut _17: &BigStruct;
+      let mut _18: &BigStruct;
+      let mut _19: &BigStruct;
+      let mut _20: &BigStruct;
+      let mut _21: &BigStruct;
+      scope 1 {
+          debug s => _1;
+          let _2: i32;
+          scope 2 {
+              debug a => _2;
+              let _4: i32;
+              scope 3 {
+                  debug b => _4;
+                  let _7: S;
+                  let _8: u8;
+                  let _9: f32;
+                  let _10: S;
+                  scope 4 {
+                      debug a => _7;
+                      debug b => _8;
+                      debug c => _9;
+                      debug d => _10;
+                      let _12: S;
+                      let _13: u8;
+                      let _14: f32;
+                      let _15: S;
+                      scope 5 {
+                          debug a => _12;
+                          debug b => _13;
+                          debug c => _14;
+                          debug d => _15;
+                      }
+                  }
+              }
+          }
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = S(const 1_i32);
+          StorageLive(_2);
+          StorageLive(_3);
+-         _3 = (_1.0: i32);
+-         _2 = Add(move _3, const 2_i32);
++         _3 = const 1_i32;
++         _2 = const 3_i32;
+          StorageDead(_3);
+          (_1.0: i32) = const 3_i32;
+          StorageLive(_4);
+          StorageLive(_5);
+-         _5 = _2;
++         _5 = const 3_i32;
+          StorageLive(_6);
+-         _6 = (_1.0: i32);
+-         _4 = Add(move _5, move _6);
++         _6 = const 3_i32;
++         _4 = const 6_i32;
+          StorageDead(_6);
+          StorageDead(_5);
+          StorageLive(_11);
+          _11 = const _;
+          StorageLive(_7);
+-         _7 = (_11.0: S);
++         _7 = const S(1_i32);
+          StorageLive(_8);
+-         _8 = (_11.1: u8);
++         _8 = const 5_u8;
+          StorageLive(_9);
+-         _9 = (_11.2: f32);
++         _9 = const 7f32;
+          StorageLive(_10);
+-         _10 = (_11.3: S);
++         _10 = const S(13_i32);
+          StorageDead(_11);
+          StorageLive(_16);
+          _16 = const {alloc1: &&BigStruct};
+          _17 = deref_copy (*_16);
+          StorageLive(_12);
+          _18 = deref_copy (*_16);
+-         _12 = ((*_18).0: S);
++         _12 = const S(1_i32);
+          StorageLive(_13);
+          _19 = deref_copy (*_16);
+-         _13 = ((*_19).1: u8);
++         _13 = const 5_u8;
+          StorageLive(_14);
+          _20 = deref_copy (*_16);
+-         _14 = ((*_20).2: f32);
++         _14 = const 7f32;
+          StorageLive(_15);
+          _21 = deref_copy (*_16);
+-         _15 = ((*_21).3: S);
++         _15 = const S(13_i32);
+          StorageDead(_16);
+          _0 = const ();
+          StorageDead(_15);
+          StorageDead(_14);
+          StorageDead(_13);
+          StorageDead(_12);
+          StorageDead(_10);
+          StorageDead(_9);
+          StorageDead(_8);
+          StorageDead(_7);
+          StorageDead(_4);
+          StorageDead(_2);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
+  alloc1 (static: STAT, size: 8, align: 8) {
+      ╾───────alloc15───────╼                         │ ╾──────╼
+  }
+  
+  alloc15 (size: 16, align: 4) {
+      01 00 00 00 00 00 e0 40 0d 00 00 00 05 __ __ __ │ .......@.....░░░
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff b/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff
deleted file mode 100644
index 914bc8ac47e..00000000000
--- a/tests/mir-opt/dataflow-const-prop/struct.main.DataflowConstProp.diff
+++ /dev/null
@@ -1,51 +0,0 @@
-- // MIR for `main` before DataflowConstProp
-+ // MIR for `main` after DataflowConstProp
-  
-  fn main() -> () {
-      let mut _0: ();
-      let mut _1: S;
-      let mut _3: i32;
-      let mut _5: i32;
-      let mut _6: i32;
-      scope 1 {
-          debug s => _1;
-          let _2: i32;
-          scope 2 {
-              debug a => _2;
-              let _4: i32;
-              scope 3 {
-                  debug b => _4;
-              }
-          }
-      }
-  
-      bb0: {
-          StorageLive(_1);
-          _1 = S(const 1_i32);
-          StorageLive(_2);
-          StorageLive(_3);
--         _3 = (_1.0: i32);
--         _2 = Add(move _3, const 2_i32);
-+         _3 = const 1_i32;
-+         _2 = const 3_i32;
-          StorageDead(_3);
-          (_1.0: i32) = const 3_i32;
-          StorageLive(_4);
-          StorageLive(_5);
--         _5 = _2;
-+         _5 = const 3_i32;
-          StorageLive(_6);
--         _6 = (_1.0: i32);
--         _4 = Add(move _5, move _6);
-+         _6 = const 3_i32;
-+         _4 = const 6_i32;
-          StorageDead(_6);
-          StorageDead(_5);
-          _0 = const ();
-          StorageDead(_4);
-          StorageDead(_2);
-          StorageDead(_1);
-          return;
-      }
-  }
-  
diff --git a/tests/mir-opt/dataflow-const-prop/struct.rs b/tests/mir-opt/dataflow-const-prop/struct.rs
index 841b279e03e..e92a1676d3f 100644
--- a/tests/mir-opt/dataflow-const-prop/struct.rs
+++ b/tests/mir-opt/dataflow-const-prop/struct.rs
@@ -1,11 +1,22 @@
 // unit-test: DataflowConstProp
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
 
+#[derive(Copy, Clone)]
 struct S(i32);
 
+#[derive(Copy, Clone)]
+struct BigStruct(S, u8, f32, S);
+
 // EMIT_MIR struct.main.DataflowConstProp.diff
 fn main() {
     let mut s = S(1);
     let a = s.0 + 2;
     s.0 = 3;
     let b = a + s.0;
+
+    const VAL: BigStruct = BigStruct(S(1), 5, 7., S(13));
+    let BigStruct(a, b, c, d) = VAL;
+
+    static STAT: &BigStruct = &BigStruct(S(1), 5, 7., S(13));
+    let BigStruct(a, b, c, d) = *STAT;
 }
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..52f096ac0e4
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.32bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `from_char` before DataflowConstProp
++ // MIR for `from_char` after DataflowConstProp
+  
+  fn from_char() -> i32 {
+      let mut _0: i32;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const 'R' as i32 (Transmute);
++         _0 = const 82_i32;
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..52f096ac0e4
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.from_char.DataflowConstProp.64bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `from_char` before DataflowConstProp
++ // MIR for `from_char` after DataflowConstProp
+  
+  fn from_char() -> i32 {
+      let mut _0: i32;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const 'R' as i32 (Transmute);
++         _0 = const 82_i32;
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..3972eb209a1
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.32bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `invalid_bool` before DataflowConstProp
++ // MIR for `invalid_bool` after DataflowConstProp
+  
+  fn invalid_bool() -> bool {
+      let mut _0: bool;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const -1_i8 as bool (Transmute);
++         _0 = const {transmute(0xff): bool};
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..3972eb209a1
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.invalid_bool.DataflowConstProp.64bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `invalid_bool` before DataflowConstProp
++ // MIR for `invalid_bool` after DataflowConstProp
+  
+  fn invalid_bool() -> bool {
+      let mut _0: bool;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const -1_i8 as bool (Transmute);
++         _0 = const {transmute(0xff): bool};
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..837dabde42a
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.32bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `invalid_char` before DataflowConstProp
++ // MIR for `invalid_char` after DataflowConstProp
+  
+  fn invalid_char() -> char {
+      let mut _0: char;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const _ as char (Transmute);
++         _0 = const {transmute(0x7fffffff): char};
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..837dabde42a
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.invalid_char.DataflowConstProp.64bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `invalid_char` before DataflowConstProp
++ // MIR for `invalid_char` after DataflowConstProp
+  
+  fn invalid_char() -> char {
+      let mut _0: char;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const _ as char (Transmute);
++         _0 = const {transmute(0x7fffffff): char};
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..6091e169e8e
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.32bit.diff
@@ -0,0 +1,18 @@
+- // MIR for `less_as_i8` before DataflowConstProp
++ // MIR for `less_as_i8` after DataflowConstProp
+  
+  fn less_as_i8() -> i8 {
+      let mut _0: i8;
+      let mut _1: std::cmp::Ordering;
+      scope 1 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = Less;
+          _0 = move _1 as i8 (Transmute);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..6091e169e8e
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.less_as_i8.DataflowConstProp.64bit.diff
@@ -0,0 +1,18 @@
+- // MIR for `less_as_i8` before DataflowConstProp
++ // MIR for `less_as_i8` after DataflowConstProp
+  
+  fn less_as_i8() -> i8 {
+      let mut _0: i8;
+      let mut _1: std::cmp::Ordering;
+      scope 1 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          _1 = Less;
+          _0 = move _1 as i8 (Transmute);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.rs b/tests/mir-opt/dataflow-const-prop/transmute.rs
new file mode 100644
index 00000000000..c25e33ab0b6
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.rs
@@ -0,0 +1,63 @@
+// unit-test: DataflowConstProp
+// compile-flags: -O --crate-type=lib
+// ignore-endian-big
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
+
+use std::mem::transmute;
+
+// EMIT_MIR transmute.less_as_i8.DataflowConstProp.diff
+pub fn less_as_i8() -> i8 {
+    unsafe { transmute(std::cmp::Ordering::Less) }
+}
+
+// EMIT_MIR transmute.from_char.DataflowConstProp.diff
+pub fn from_char() -> i32 {
+    unsafe { transmute('R') }
+}
+
+// EMIT_MIR transmute.valid_char.DataflowConstProp.diff
+pub fn valid_char() -> char {
+    unsafe { transmute(0x52_u32) }
+}
+
+// EMIT_MIR transmute.invalid_char.DataflowConstProp.diff
+pub unsafe fn invalid_char() -> char {
+    unsafe { transmute(i32::MAX) }
+}
+
+// EMIT_MIR transmute.invalid_bool.DataflowConstProp.diff
+pub unsafe fn invalid_bool() -> bool {
+    unsafe { transmute(-1_i8) }
+}
+
+// EMIT_MIR transmute.undef_union_as_integer.DataflowConstProp.diff
+pub unsafe fn undef_union_as_integer() -> u32 {
+    union Union32 { value: u32, unit: () }
+    unsafe { transmute(Union32 { unit: () }) }
+}
+
+// EMIT_MIR transmute.unreachable_direct.DataflowConstProp.diff
+pub unsafe fn unreachable_direct() -> ! {
+    let x: Never = unsafe { transmute(()) };
+    match x {}
+}
+
+// EMIT_MIR transmute.unreachable_ref.DataflowConstProp.diff
+pub unsafe fn unreachable_ref() -> ! {
+    let x: &Never = unsafe { transmute(1_usize) };
+    match *x {}
+}
+
+// EMIT_MIR transmute.unreachable_mut.DataflowConstProp.diff
+pub unsafe fn unreachable_mut() -> ! {
+    let x: &mut Never = unsafe { transmute(1_usize) };
+    match *x {}
+}
+
+// EMIT_MIR transmute.unreachable_box.DataflowConstProp.diff
+pub unsafe fn unreachable_box() -> ! {
+    let x: Box<Never> = unsafe { transmute(1_usize) };
+    match *x {}
+}
+
+enum Never {}
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..fc0634b1f8f
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.32bit.diff
@@ -0,0 +1,22 @@
+- // MIR for `undef_union_as_integer` before DataflowConstProp
++ // MIR for `undef_union_as_integer` after DataflowConstProp
+  
+  fn undef_union_as_integer() -> u32 {
+      let mut _0: u32;
+      let mut _1: undef_union_as_integer::Union32;
+      let mut _2: ();
+      scope 1 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = ();
+          _1 = Union32 { value: move _2 };
+          StorageDead(_2);
+          _0 = move _1 as u32 (Transmute);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..fc0634b1f8f
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.undef_union_as_integer.DataflowConstProp.64bit.diff
@@ -0,0 +1,22 @@
+- // MIR for `undef_union_as_integer` before DataflowConstProp
++ // MIR for `undef_union_as_integer` after DataflowConstProp
+  
+  fn undef_union_as_integer() -> u32 {
+      let mut _0: u32;
+      let mut _1: undef_union_as_integer::Union32;
+      let mut _2: ();
+      scope 1 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = ();
+          _1 = Union32 { value: move _2 };
+          StorageDead(_2);
+          _0 = move _1 as u32 (Transmute);
+          StorageDead(_1);
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..d0c298ba233
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.32bit.diff
@@ -0,0 +1,20 @@
+- // MIR for `unreachable_box` before DataflowConstProp
++ // MIR for `unreachable_box` after DataflowConstProp
+  
+  fn unreachable_box() -> ! {
+      let mut _0: !;
+      let _1: std::boxed::Box<Never>;
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+-         _1 = const 1_usize as std::boxed::Box<Never> (Transmute);
++         _1 = const Box::<Never>(Unique::<Never> {{ pointer: NonNull::<Never> {{ pointer: {0x1 as *const Never} }}, _marker: PhantomData::<Never> }}, std::alloc::Global);
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..d0c298ba233
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_box.DataflowConstProp.64bit.diff
@@ -0,0 +1,20 @@
+- // MIR for `unreachable_box` before DataflowConstProp
++ // MIR for `unreachable_box` after DataflowConstProp
+  
+  fn unreachable_box() -> ! {
+      let mut _0: !;
+      let _1: std::boxed::Box<Never>;
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+-         _1 = const 1_usize as std::boxed::Box<Never> (Transmute);
++         _1 = const Box::<Never>(Unique::<Never> {{ pointer: NonNull::<Never> {{ pointer: {0x1 as *const Never} }}, _marker: PhantomData::<Never> }}, std::alloc::Global);
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..acbb5cd1bc7
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.32bit.diff
@@ -0,0 +1,22 @@
+- // MIR for `unreachable_direct` before DataflowConstProp
++ // MIR for `unreachable_direct` after DataflowConstProp
+  
+  fn unreachable_direct() -> ! {
+      let mut _0: !;
+      let _1: Never;
+      let mut _2: ();
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = ();
+          _1 = move _2 as Never (Transmute);
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..acbb5cd1bc7
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_direct.DataflowConstProp.64bit.diff
@@ -0,0 +1,22 @@
+- // MIR for `unreachable_direct` before DataflowConstProp
++ // MIR for `unreachable_direct` after DataflowConstProp
+  
+  fn unreachable_direct() -> ! {
+      let mut _0: !;
+      let _1: Never;
+      let mut _2: ();
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+          _2 = ();
+          _1 = move _2 as Never (Transmute);
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..2ffaeea72db
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.32bit.diff
@@ -0,0 +1,24 @@
+- // MIR for `unreachable_mut` before DataflowConstProp
++ // MIR for `unreachable_mut` after DataflowConstProp
+  
+  fn unreachable_mut() -> ! {
+      let mut _0: !;
+      let _1: &mut Never;
+      let mut _2: &mut Never;
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+-         _2 = const 1_usize as &mut Never (Transmute);
++         _2 = const {0x1 as &mut Never};
+          _1 = &mut (*_2);
+          StorageDead(_2);
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..2ffaeea72db
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_mut.DataflowConstProp.64bit.diff
@@ -0,0 +1,24 @@
+- // MIR for `unreachable_mut` before DataflowConstProp
++ // MIR for `unreachable_mut` after DataflowConstProp
+  
+  fn unreachable_mut() -> ! {
+      let mut _0: !;
+      let _1: &mut Never;
+      let mut _2: &mut Never;
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+          StorageLive(_2);
+-         _2 = const 1_usize as &mut Never (Transmute);
++         _2 = const {0x1 as &mut Never};
+          _1 = &mut (*_2);
+          StorageDead(_2);
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..31fcaafc5bc
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.32bit.diff
@@ -0,0 +1,20 @@
+- // MIR for `unreachable_ref` before DataflowConstProp
++ // MIR for `unreachable_ref` after DataflowConstProp
+  
+  fn unreachable_ref() -> ! {
+      let mut _0: !;
+      let _1: &Never;
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+-         _1 = const 1_usize as &Never (Transmute);
++         _1 = const {0x1 as &Never};
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..31fcaafc5bc
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.unreachable_ref.DataflowConstProp.64bit.diff
@@ -0,0 +1,20 @@
+- // MIR for `unreachable_ref` before DataflowConstProp
++ // MIR for `unreachable_ref` after DataflowConstProp
+  
+  fn unreachable_ref() -> ! {
+      let mut _0: !;
+      let _1: &Never;
+      scope 1 {
+          debug x => _1;
+      }
+      scope 2 {
+      }
+  
+      bb0: {
+          StorageLive(_1);
+-         _1 = const 1_usize as &Never (Transmute);
++         _1 = const {0x1 as &Never};
+          unreachable;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.32bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.32bit.diff
new file mode 100644
index 00000000000..402ef754a64
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.32bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `valid_char` before DataflowConstProp
++ // MIR for `valid_char` after DataflowConstProp
+  
+  fn valid_char() -> char {
+      let mut _0: char;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const 82_u32 as char (Transmute);
++         _0 = const 'R';
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.64bit.diff b/tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.64bit.diff
new file mode 100644
index 00000000000..402ef754a64
--- /dev/null
+++ b/tests/mir-opt/dataflow-const-prop/transmute.valid_char.DataflowConstProp.64bit.diff
@@ -0,0 +1,15 @@
+- // MIR for `valid_char` before DataflowConstProp
++ // MIR for `valid_char` after DataflowConstProp
+  
+  fn valid_char() -> char {
+      let mut _0: char;
+      scope 1 {
+      }
+  
+      bb0: {
+-         _0 = const 82_u32 as char (Transmute);
++         _0 = const 'R';
+          return;
+      }
+  }
+  
diff --git a/tests/mir-opt/enum_opt.cand.EnumSizeOpt.32bit.diff b/tests/mir-opt/enum_opt.cand.EnumSizeOpt.32bit.diff
index 9d9a7a1e485..ec5f5c1f1fc 100644
--- a/tests/mir-opt/enum_opt.cand.EnumSizeOpt.32bit.diff
+++ b/tests/mir-opt/enum_opt.cand.EnumSizeOpt.32bit.diff
@@ -64,5 +64,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc15 (size: 8, align: 4) {
++     02 00 00 00 05 20 00 00                         │ ..... ..
   }
   
diff --git a/tests/mir-opt/enum_opt.cand.EnumSizeOpt.64bit.diff b/tests/mir-opt/enum_opt.cand.EnumSizeOpt.64bit.diff
index 9d9a7a1e485..9bf8637ec76 100644
--- a/tests/mir-opt/enum_opt.cand.EnumSizeOpt.64bit.diff
+++ b/tests/mir-opt/enum_opt.cand.EnumSizeOpt.64bit.diff
@@ -64,5 +64,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc15 (size: 16, align: 8) {
++     02 00 00 00 00 00 00 00 05 20 00 00 00 00 00 00 │ ......... ......
   }
   
diff --git a/tests/mir-opt/enum_opt.unin.EnumSizeOpt.32bit.diff b/tests/mir-opt/enum_opt.unin.EnumSizeOpt.32bit.diff
index 4306f38b82a..7dc6d21a907 100644
--- a/tests/mir-opt/enum_opt.unin.EnumSizeOpt.32bit.diff
+++ b/tests/mir-opt/enum_opt.unin.EnumSizeOpt.32bit.diff
@@ -64,5 +64,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc14 (size: 8, align: 4) {
++     05 20 00 00 01 00 00 00                         │ . ......
   }
   
diff --git a/tests/mir-opt/enum_opt.unin.EnumSizeOpt.64bit.diff b/tests/mir-opt/enum_opt.unin.EnumSizeOpt.64bit.diff
index 4306f38b82a..0b000876a86 100644
--- a/tests/mir-opt/enum_opt.unin.EnumSizeOpt.64bit.diff
+++ b/tests/mir-opt/enum_opt.unin.EnumSizeOpt.64bit.diff
@@ -64,5 +64,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc14 (size: 16, align: 8) {
++     05 20 00 00 00 00 00 00 01 00 00 00 00 00 00 00 │ . ..............
   }
   
diff --git a/tests/mir-opt/equal_true.opt.InstSimplify.diff b/tests/mir-opt/equal_true.opt.InstSimplify.diff
index 7b38862e4d5..88a51000c93 100644
--- a/tests/mir-opt/equal_true.opt.InstSimplify.diff
+++ b/tests/mir-opt/equal_true.opt.InstSimplify.diff
@@ -13,16 +13,17 @@
           _3 = _1;
 -         _2 = Eq(move _3, const true);
 +         _2 = move _3;
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_i32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_i32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/funky_arms.rs b/tests/mir-opt/funky_arms.rs
index 6b4f4c80560..79fd9457ce1 100644
--- a/tests/mir-opt/funky_arms.rs
+++ b/tests/mir-opt/funky_arms.rs
@@ -9,7 +9,7 @@ use core::num::flt2dec;
 use std::fmt::{Formatter, Result};
 
 // EMIT_MIR funky_arms.float_to_exponential_common.ConstProp.diff
-fn float_to_exponential_common<T>(fmt: &mut Formatter<'_>, num: &T, upper: bool) -> Result
+pub fn float_to_exponential_common<T>(fmt: &mut Formatter<'_>, num: &T, upper: bool) -> Result
 where
     T: flt2dec::DecodableFloat,
 {
diff --git a/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-abort.mir b/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-abort.mir
index 958078b9706..acbb7904985 100644
--- a/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-abort.mir
+++ b/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-abort.mir
@@ -2,7 +2,11 @@
 /* generator_layout = GeneratorLayout {
     field_tys: {
         _0: GeneratorSavedTy {
-            ty: std::string::String,
+            ty: Adt(
+                std::string::String,
+                [
+                ],
+            ),
             source_info: SourceInfo {
                 span: $DIR/generator_drop_cleanup.rs:11:13: 11:15 (#0),
                 scope: scope[0],
diff --git a/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-unwind.mir b/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-unwind.mir
index 7e050e585b1..c17d4421542 100644
--- a/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-unwind.mir
+++ b/tests/mir-opt/generator_drop_cleanup.main-{closure#0}.generator_drop.0.panic-unwind.mir
@@ -2,7 +2,11 @@
 /* generator_layout = GeneratorLayout {
     field_tys: {
         _0: GeneratorSavedTy {
-            ty: std::string::String,
+            ty: Adt(
+                std::string::String,
+                [
+                ],
+            ),
             source_info: SourceInfo {
                 span: $DIR/generator_drop_cleanup.rs:11:13: 11:15 (#0),
                 scope: scope[0],
diff --git a/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir b/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
index 13d703b908c..e33f5f59de1 100644
--- a/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
+++ b/tests/mir-opt/generator_tiny.main-{closure#0}.generator_resume.0.mir
@@ -2,7 +2,11 @@
 /* generator_layout = GeneratorLayout {
     field_tys: {
         _0: GeneratorSavedTy {
-            ty: HasDrop,
+            ty: Adt(
+                HasDrop,
+                [
+                ],
+            ),
             source_info: SourceInfo {
                 span: $DIR/generator_tiny.rs:20:13: 20:15 (#0),
                 scope: scope[0],
diff --git a/tests/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff b/tests/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
index 8483b89f814..15319586062 100644
--- a/tests/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
+++ b/tests/mir-opt/if_condition_int.dont_opt_floats.SimplifyComparisonIntegral.diff
@@ -12,16 +12,17 @@
           StorageLive(_3);
           _3 = _1;
           _2 = Eq(move _3, const -42f32);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_i32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_i32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff b/tests/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff
index 837841b009b..fedbd6cdd24 100644
--- a/tests/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff
+++ b/tests/mir-opt/if_condition_int.opt_char.SimplifyComparisonIntegral.diff
@@ -12,21 +12,19 @@
           StorageLive(_3);
           _3 = _1;
 -         _2 = Eq(move _3, const 'x');
--         StorageDead(_3);
 -         switchInt(move _2) -> [0: bb2, otherwise: bb1];
 +         nop;
-+         nop;
 +         switchInt(move _3) -> [120: bb1, otherwise: bb2];
       }
   
       bb1: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff b/tests/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff
index 3cbf912996c..9c38d8fe065 100644
--- a/tests/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff
+++ b/tests/mir-opt/if_condition_int.opt_i8.SimplifyComparisonIntegral.diff
@@ -12,21 +12,19 @@
           StorageLive(_3);
           _3 = _1;
 -         _2 = Eq(move _3, const 42_i8);
--         StorageDead(_3);
 -         switchInt(move _2) -> [0: bb2, otherwise: bb1];
 +         nop;
-+         nop;
 +         switchInt(move _3) -> [42: bb1, otherwise: bb2];
       }
   
       bb1: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff b/tests/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff
index 8d6f3b2249e..8c85ce78565 100644
--- a/tests/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff
+++ b/tests/mir-opt/if_condition_int.opt_multiple_ifs.SimplifyComparisonIntegral.diff
@@ -14,40 +14,36 @@
           StorageLive(_3);
           _3 = _1;
 -         _2 = Eq(move _3, const 42_u32);
--         StorageDead(_3);
 -         switchInt(move _2) -> [0: bb2, otherwise: bb1];
 +         nop;
-+         nop;
 +         switchInt(move _3) -> [42: bb1, otherwise: bb2];
       }
   
       bb1: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb6;
       }
   
       bb2: {
-+         StorageDead(_3);
+          StorageDead(_3);
           StorageLive(_4);
           StorageLive(_5);
           _5 = _1;
 -         _4 = Ne(move _5, const 21_u32);
--         StorageDead(_5);
 -         switchInt(move _4) -> [0: bb4, otherwise: bb3];
 +         nop;
-+         nop;
 +         switchInt(move _5) -> [21: bb4, otherwise: bb3];
       }
   
       bb3: {
-+         StorageDead(_5);
+          StorageDead(_5);
           _0 = const 1_u32;
           goto -> bb5;
       }
   
       bb4: {
-+         StorageDead(_5);
+          StorageDead(_5);
           _0 = const 2_u32;
           goto -> bb5;
       }
diff --git a/tests/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff b/tests/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff
index e2566b13c59..876ed61e9fa 100644
--- a/tests/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff
+++ b/tests/mir-opt/if_condition_int.opt_negative.SimplifyComparisonIntegral.diff
@@ -12,21 +12,19 @@
           StorageLive(_3);
           _3 = _1;
 -         _2 = Eq(move _3, const -42_i32);
--         StorageDead(_3);
 -         switchInt(move _2) -> [0: bb2, otherwise: bb1];
 +         nop;
-+         nop;
 +         switchInt(move _3) -> [4294967254: bb1, otherwise: bb2];
       }
   
       bb1: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff b/tests/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff
index dc8da5b44b2..ed3eb47dd3d 100644
--- a/tests/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff
+++ b/tests/mir-opt/if_condition_int.opt_u32.SimplifyComparisonIntegral.diff
@@ -12,21 +12,19 @@
           StorageLive(_3);
           _3 = _1;
 -         _2 = Eq(move _3, const 42_u32);
--         StorageDead(_3);
 -         switchInt(move _2) -> [0: bb2, otherwise: bb1];
 +         nop;
-+         nop;
 +         switchInt(move _3) -> [42: bb1, otherwise: bb2];
       }
   
       bb1: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
-+         StorageDead(_3);
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/inline/inline_diverging.g.Inline.panic-abort.diff b/tests/mir-opt/inline/inline_diverging.g.Inline.panic-abort.diff
index 9db0d385da7..d675695eb10 100644
--- a/tests/mir-opt/inline/inline_diverging.g.Inline.panic-abort.diff
+++ b/tests/mir-opt/inline/inline_diverging.g.Inline.panic-abort.diff
@@ -18,11 +18,11 @@
           StorageLive(_3);
           _3 = _1;
           _2 = Gt(move _3, const 0_i32);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           StorageLive(_4);
           _4 = _1;
           _0 = move _4 as u32 (IntToInt);
@@ -32,6 +32,7 @@
       }
   
       bb2: {
+          StorageDead(_3);
           StorageLive(_6);
 -         _6 = panic() -> unwind unreachable;
 +         StorageLive(_7);
diff --git a/tests/mir-opt/inline/inline_diverging.g.Inline.panic-unwind.diff b/tests/mir-opt/inline/inline_diverging.g.Inline.panic-unwind.diff
index 5663b462400..1142616115f 100644
--- a/tests/mir-opt/inline/inline_diverging.g.Inline.panic-unwind.diff
+++ b/tests/mir-opt/inline/inline_diverging.g.Inline.panic-unwind.diff
@@ -18,11 +18,11 @@
           StorageLive(_3);
           _3 = _1;
           _2 = Gt(move _3, const 0_i32);
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           StorageLive(_4);
           _4 = _1;
           _0 = move _4 as u32 (IntToInt);
@@ -32,6 +32,7 @@
       }
   
       bb2: {
+          StorageDead(_3);
           StorageLive(_6);
 -         _6 = panic() -> unwind continue;
 +         StorageLive(_7);
diff --git a/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-abort.diff b/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-abort.diff
index f61632728ba..9d8f272abea 100644
--- a/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-abort.diff
+++ b/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-abort.diff
@@ -33,12 +33,10 @@
           _3 = &_4;
           _2 = move _3 as &[T] (PointerCoercion(Unsize));
           StorageDead(_3);
-          _8 = Len((*_2));
+          _8 = const 3_usize;
           _9 = const 3_usize;
--         _10 = Eq(move _8, const 3_usize);
--         switchInt(move _10) -> [0: bb1, otherwise: bb2];
-+         nop;
-+         switchInt(move _8) -> [3: bb2, otherwise: bb1];
+          _10 = const true;
+          goto -> bb2;
       }
   
       bb1: {
diff --git a/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-unwind.diff b/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-unwind.diff
index f6c337be10f..738b0b1b3e5 100644
--- a/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-unwind.diff
+++ b/tests/mir-opt/issue_76432.test.SimplifyComparisonIntegral.panic-unwind.diff
@@ -33,12 +33,10 @@
           _3 = &_4;
           _2 = move _3 as &[T] (PointerCoercion(Unsize));
           StorageDead(_3);
-          _8 = Len((*_2));
+          _8 = const 3_usize;
           _9 = const 3_usize;
--         _10 = Eq(move _8, const 3_usize);
--         switchInt(move _10) -> [0: bb1, otherwise: bb2];
-+         nop;
-+         switchInt(move _8) -> [3: bb2, otherwise: bb1];
+          _10 = const true;
+          goto -> bb2;
       }
   
       bb1: {
diff --git a/tests/mir-opt/issue_99325.main.built.after.mir b/tests/mir-opt/issue_99325.main.built.after.32bit.mir
index aef89c7f9f7..132b713356e 100644
--- a/tests/mir-opt/issue_99325.main.built.after.mir
+++ b/tests/mir-opt/issue_99325.main.built.after.32bit.mir
@@ -1,8 +1,8 @@
 // MIR for `main` after built
 
 | User Type Annotations
-| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[22bb]::function_with_bytes), UserArgs { args: [Const { ty: &'static [u8; 4], kind: Branch([Leaf(0x41), Leaf(0x41), Leaf(0x41), Leaf(0x41)]) }], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:10:16: 10:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}
-| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[22bb]::function_with_bytes), UserArgs { args: [Const { ty: &'static [u8; 4], kind: UnevaluatedConst { def: DefId(0:8 ~ issue_99325[22bb]::main::{constant#1}), args: [] } }], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:11:16: 11:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}
+| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[22bb]::function_with_bytes), UserArgs { args: [&*b"AAAA"], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:12:16: 12:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}
+| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[22bb]::function_with_bytes), UserArgs { args: [UnevaluatedConst { def: DefId(0:8 ~ issue_99325[22bb]::main::{constant#1}), args: [] }: &ReStatic [u8; 4_usize]], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:13:16: 13:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}
 |
 fn main() -> () {
     let mut _0: ();
@@ -16,51 +16,49 @@ fn main() -> () {
     let _8: &&[u8];
     let _9: &&[u8; 4];
     let mut _10: bool;
-    let mut _11: bool;
-    let mut _12: &&[u8];
-    let mut _13: &&[u8; 4];
-    let mut _14: !;
-    let _16: !;
-    let mut _17: core::panicking::AssertKind;
-    let mut _18: &&[u8];
-    let _19: &&[u8];
-    let mut _20: &&[u8; 4];
-    let _21: &&[u8; 4];
-    let mut _22: std::option::Option<std::fmt::Arguments<'_>>;
-    let _23: ();
-    let mut _24: (&&[u8], &&[u8; 4]);
-    let mut _25: &&[u8];
-    let _26: &[u8];
-    let mut _27: &&[u8; 4];
-    let _28: &[u8; 4];
-    let _29: &&[u8];
-    let _30: &&[u8; 4];
-    let mut _31: bool;
-    let mut _32: bool;
-    let mut _33: &&[u8];
-    let mut _34: &&[u8; 4];
-    let mut _35: !;
-    let _37: !;
-    let mut _38: core::panicking::AssertKind;
-    let mut _39: &&[u8];
-    let _40: &&[u8];
-    let mut _41: &&[u8; 4];
-    let _42: &&[u8; 4];
-    let mut _43: std::option::Option<std::fmt::Arguments<'_>>;
+    let mut _11: &&[u8];
+    let mut _12: &&[u8; 4];
+    let mut _13: !;
+    let _15: !;
+    let mut _16: core::panicking::AssertKind;
+    let mut _17: &&[u8];
+    let _18: &&[u8];
+    let mut _19: &&[u8; 4];
+    let _20: &&[u8; 4];
+    let mut _21: std::option::Option<std::fmt::Arguments<'_>>;
+    let _22: ();
+    let mut _23: (&&[u8], &&[u8; 4]);
+    let mut _24: &&[u8];
+    let _25: &[u8];
+    let mut _26: &&[u8; 4];
+    let _27: &[u8; 4];
+    let _28: &&[u8];
+    let _29: &&[u8; 4];
+    let mut _30: bool;
+    let mut _31: &&[u8];
+    let mut _32: &&[u8; 4];
+    let mut _33: !;
+    let _35: !;
+    let mut _36: core::panicking::AssertKind;
+    let mut _37: &&[u8];
+    let _38: &&[u8];
+    let mut _39: &&[u8; 4];
+    let _40: &&[u8; 4];
+    let mut _41: std::option::Option<std::fmt::Arguments<'_>>;
     scope 1 {
         debug left_val => _8;
         debug right_val => _9;
-        let _15: core::panicking::AssertKind;
+        let _14: core::panicking::AssertKind;
         scope 2 {
-            debug kind => _15;
+            debug kind => _14;
         }
     }
     scope 3 {
-        debug left_val => _29;
-        debug right_val => _30;
-        let _36: core::panicking::AssertKind;
+        debug left_val => _28;
+        debug right_val => _29;
+        let _34: core::panicking::AssertKind;
         scope 4 {
-            debug kind => _36;
+            debug kind => _34;
         }
     }
 
@@ -69,7 +67,7 @@ fn main() -> () {
         StorageLive(_2);
         StorageLive(_3);
         StorageLive(_4);
-        _4 = function_with_bytes::<&*b"AAAA">() -> [return: bb1, unwind: bb19];
+        _4 = function_with_bytes::<&*b"AAAA">() -> [return: bb1, unwind: bb21];
     }
 
     bb1: {
@@ -90,179 +88,185 @@ fn main() -> () {
         _9 = (_2.1: &&[u8; 4]);
         StorageLive(_10);
         StorageLive(_11);
+        _11 = &(*_8);
         StorageLive(_12);
-        _12 = &(*_8);
-        StorageLive(_13);
-        _13 = &(*_9);
-        _11 = <&[u8] as PartialEq<&[u8; 4]>>::eq(move _12, move _13) -> [return: bb2, unwind: bb19];
+        _12 = &(*_9);
+        _10 = <&[u8] as PartialEq<&[u8; 4]>>::eq(move _11, move _12) -> [return: bb2, unwind: bb21];
     }
 
     bb2: {
-        StorageDead(_13);
-        StorageDead(_12);
-        _10 = Not(move _11);
-        StorageDead(_11);
         switchInt(move _10) -> [0: bb4, otherwise: bb3];
     }
 
     bb3: {
+        StorageDead(_12);
+        StorageDead(_11);
+        goto -> bb8;
+    }
+
+    bb4: {
+        goto -> bb5;
+    }
+
+    bb5: {
+        StorageDead(_12);
+        StorageDead(_11);
+        StorageLive(_14);
+        _14 = core::panicking::AssertKind::Eq;
+        FakeRead(ForLet(None), _14);
         StorageLive(_15);
-        _15 = core::panicking::AssertKind::Eq;
-        FakeRead(ForLet(None), _15);
         StorageLive(_16);
+        _16 = move _14;
         StorageLive(_17);
-        _17 = move _15;
         StorageLive(_18);
+        _18 = &(*_8);
+        _17 = &(*_18);
         StorageLive(_19);
-        _19 = &(*_8);
-        _18 = &(*_19);
         StorageLive(_20);
+        _20 = &(*_9);
+        _19 = &(*_20);
         StorageLive(_21);
-        _21 = &(*_9);
-        _20 = &(*_21);
-        StorageLive(_22);
-        _22 = Option::<Arguments<'_>>::None;
-        _16 = core::panicking::assert_failed::<&[u8], &[u8; 4]>(move _17, move _18, move _20, move _22) -> bb19;
-    }
-
-    bb4: {
-        goto -> bb7;
+        _21 = Option::<Arguments<'_>>::None;
+        _15 = core::panicking::assert_failed::<&[u8], &[u8; 4]>(move _16, move _17, move _19, move _21) -> bb21;
     }
 
-    bb5: {
-        StorageDead(_22);
-        StorageDead(_20);
-        StorageDead(_18);
-        StorageDead(_17);
+    bb6: {
         StorageDead(_21);
         StorageDead(_19);
+        StorageDead(_17);
         StorageDead(_16);
+        StorageDead(_20);
+        StorageDead(_18);
         StorageDead(_15);
+        StorageDead(_14);
         unreachable;
     }
 
-    bb6: {
-        goto -> bb8;
+    bb7: {
+        goto -> bb9;
     }
 
-    bb7: {
+    bb8: {
         _1 = const ();
-        goto -> bb8;
+        goto -> bb9;
     }
 
-    bb8: {
+    bb9: {
         StorageDead(_10);
         StorageDead(_9);
         StorageDead(_8);
-        goto -> bb9;
+        goto -> bb10;
     }
 
-    bb9: {
+    bb10: {
         StorageDead(_7);
         StorageDead(_6);
         StorageDead(_4);
         StorageDead(_2);
         StorageDead(_1);
+        StorageLive(_22);
         StorageLive(_23);
         StorageLive(_24);
         StorageLive(_25);
-        StorageLive(_26);
-        _26 = function_with_bytes::<&*b"AAAA">() -> [return: bb10, unwind: bb19];
+        _25 = function_with_bytes::<&*b"AAAA">() -> [return: bb11, unwind: bb21];
     }
 
-    bb10: {
-        _25 = &_26;
+    bb11: {
+        _24 = &_25;
+        StorageLive(_26);
         StorageLive(_27);
+        _27 = const b"AAAA";
+        _26 = &_27;
+        _23 = (move _24, move _26);
+        StorageDead(_26);
+        StorageDead(_24);
+        FakeRead(ForMatchedPlace(None), _23);
         StorageLive(_28);
-        _28 = const b"AAAA";
-        _27 = &_28;
-        _24 = (move _25, move _27);
-        StorageDead(_27);
-        StorageDead(_25);
-        FakeRead(ForMatchedPlace(None), _24);
+        _28 = (_23.0: &&[u8]);
         StorageLive(_29);
-        _29 = (_24.0: &&[u8]);
+        _29 = (_23.1: &&[u8; 4]);
         StorageLive(_30);
-        _30 = (_24.1: &&[u8; 4]);
         StorageLive(_31);
+        _31 = &(*_28);
         StorageLive(_32);
-        StorageLive(_33);
-        _33 = &(*_29);
-        StorageLive(_34);
-        _34 = &(*_30);
-        _32 = <&[u8] as PartialEq<&[u8; 4]>>::eq(move _33, move _34) -> [return: bb11, unwind: bb19];
+        _32 = &(*_29);
+        _30 = <&[u8] as PartialEq<&[u8; 4]>>::eq(move _31, move _32) -> [return: bb12, unwind: bb21];
     }
 
-    bb11: {
-        StorageDead(_34);
-        StorageDead(_33);
-        _31 = Not(move _32);
+    bb12: {
+        switchInt(move _30) -> [0: bb14, otherwise: bb13];
+    }
+
+    bb13: {
         StorageDead(_32);
-        switchInt(move _31) -> [0: bb13, otherwise: bb12];
+        StorageDead(_31);
+        goto -> bb18;
     }
 
-    bb12: {
+    bb14: {
+        goto -> bb15;
+    }
+
+    bb15: {
+        StorageDead(_32);
+        StorageDead(_31);
+        StorageLive(_34);
+        _34 = core::panicking::AssertKind::Eq;
+        FakeRead(ForLet(None), _34);
+        StorageLive(_35);
         StorageLive(_36);
-        _36 = core::panicking::AssertKind::Eq;
-        FakeRead(ForLet(None), _36);
+        _36 = move _34;
         StorageLive(_37);
         StorageLive(_38);
-        _38 = move _36;
+        _38 = &(*_28);
+        _37 = &(*_38);
         StorageLive(_39);
         StorageLive(_40);
         _40 = &(*_29);
         _39 = &(*_40);
         StorageLive(_41);
-        StorageLive(_42);
-        _42 = &(*_30);
-        _41 = &(*_42);
-        StorageLive(_43);
-        _43 = Option::<Arguments<'_>>::None;
-        _37 = core::panicking::assert_failed::<&[u8], &[u8; 4]>(move _38, move _39, move _41, move _43) -> bb19;
-    }
-
-    bb13: {
-        goto -> bb16;
+        _41 = Option::<Arguments<'_>>::None;
+        _35 = core::panicking::assert_failed::<&[u8], &[u8; 4]>(move _36, move _37, move _39, move _41) -> bb21;
     }
 
-    bb14: {
-        StorageDead(_43);
+    bb16: {
         StorageDead(_41);
         StorageDead(_39);
-        StorageDead(_38);
-        StorageDead(_42);
-        StorageDead(_40);
         StorageDead(_37);
         StorageDead(_36);
+        StorageDead(_40);
+        StorageDead(_38);
+        StorageDead(_35);
+        StorageDead(_34);
         unreachable;
     }
 
-    bb15: {
-        goto -> bb17;
+    bb17: {
+        goto -> bb19;
     }
 
-    bb16: {
-        _23 = const ();
-        goto -> bb17;
+    bb18: {
+        _22 = const ();
+        goto -> bb19;
     }
 
-    bb17: {
-        StorageDead(_31);
+    bb19: {
         StorageDead(_30);
         StorageDead(_29);
-        goto -> bb18;
+        StorageDead(_28);
+        goto -> bb20;
     }
 
-    bb18: {
-        StorageDead(_28);
-        StorageDead(_26);
-        StorageDead(_24);
+    bb20: {
+        StorageDead(_27);
+        StorageDead(_25);
         StorageDead(_23);
+        StorageDead(_22);
         _0 = const ();
         return;
     }
 
-    bb19 (cleanup): {
+    bb21 (cleanup): {
         resume;
     }
 }
diff --git a/tests/mir-opt/issue_99325.main.built.after.64bit.mir b/tests/mir-opt/issue_99325.main.built.after.64bit.mir
new file mode 100644
index 00000000000..132b713356e
--- /dev/null
+++ b/tests/mir-opt/issue_99325.main.built.after.64bit.mir
@@ -0,0 +1,276 @@
+// MIR for `main` after built
+
+| User Type Annotations
+| 0: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[22bb]::function_with_bytes), UserArgs { args: [&*b"AAAA"], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:12:16: 12:46, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}
+| 1: user_ty: Canonical { value: TypeOf(DefId(0:3 ~ issue_99325[22bb]::function_with_bytes), UserArgs { args: [UnevaluatedConst { def: DefId(0:8 ~ issue_99325[22bb]::main::{constant#1}), args: [] }: &ReStatic [u8; 4_usize]], user_self_ty: None }), max_universe: U0, variables: [] }, span: $DIR/issue_99325.rs:13:16: 13:68, inferred_ty: fn() -> &'static [u8] {function_with_bytes::<&*b"AAAA">}
+|
+fn main() -> () {
+    let mut _0: ();
+    let _1: ();
+    let mut _2: (&&[u8], &&[u8; 4]);
+    let mut _3: &&[u8];
+    let _4: &[u8];
+    let mut _5: &&[u8; 4];
+    let _6: &[u8; 4];
+    let _7: [u8; 4];
+    let _8: &&[u8];
+    let _9: &&[u8; 4];
+    let mut _10: bool;
+    let mut _11: &&[u8];
+    let mut _12: &&[u8; 4];
+    let mut _13: !;
+    let _15: !;
+    let mut _16: core::panicking::AssertKind;
+    let mut _17: &&[u8];
+    let _18: &&[u8];
+    let mut _19: &&[u8; 4];
+    let _20: &&[u8; 4];
+    let mut _21: std::option::Option<std::fmt::Arguments<'_>>;
+    let _22: ();
+    let mut _23: (&&[u8], &&[u8; 4]);
+    let mut _24: &&[u8];
+    let _25: &[u8];
+    let mut _26: &&[u8; 4];
+    let _27: &[u8; 4];
+    let _28: &&[u8];
+    let _29: &&[u8; 4];
+    let mut _30: bool;
+    let mut _31: &&[u8];
+    let mut _32: &&[u8; 4];
+    let mut _33: !;
+    let _35: !;
+    let mut _36: core::panicking::AssertKind;
+    let mut _37: &&[u8];
+    let _38: &&[u8];
+    let mut _39: &&[u8; 4];
+    let _40: &&[u8; 4];
+    let mut _41: std::option::Option<std::fmt::Arguments<'_>>;
+    scope 1 {
+        debug left_val => _8;
+        debug right_val => _9;
+        let _14: core::panicking::AssertKind;
+        scope 2 {
+            debug kind => _14;
+        }
+    }
+    scope 3 {
+        debug left_val => _28;
+        debug right_val => _29;
+        let _34: core::panicking::AssertKind;
+        scope 4 {
+            debug kind => _34;
+        }
+    }
+
+    bb0: {
+        StorageLive(_1);
+        StorageLive(_2);
+        StorageLive(_3);
+        StorageLive(_4);
+        _4 = function_with_bytes::<&*b"AAAA">() -> [return: bb1, unwind: bb21];
+    }
+
+    bb1: {
+        _3 = &_4;
+        StorageLive(_5);
+        StorageLive(_6);
+        StorageLive(_7);
+        _7 = [const 65_u8, const 65_u8, const 65_u8, const 65_u8];
+        _6 = &_7;
+        _5 = &_6;
+        _2 = (move _3, move _5);
+        StorageDead(_5);
+        StorageDead(_3);
+        FakeRead(ForMatchedPlace(None), _2);
+        StorageLive(_8);
+        _8 = (_2.0: &&[u8]);
+        StorageLive(_9);
+        _9 = (_2.1: &&[u8; 4]);
+        StorageLive(_10);
+        StorageLive(_11);
+        _11 = &(*_8);
+        StorageLive(_12);
+        _12 = &(*_9);
+        _10 = <&[u8] as PartialEq<&[u8; 4]>>::eq(move _11, move _12) -> [return: bb2, unwind: bb21];
+    }
+
+    bb2: {
+        switchInt(move _10) -> [0: bb4, otherwise: bb3];
+    }
+
+    bb3: {
+        StorageDead(_12);
+        StorageDead(_11);
+        goto -> bb8;
+    }
+
+    bb4: {
+        goto -> bb5;
+    }
+
+    bb5: {
+        StorageDead(_12);
+        StorageDead(_11);
+        StorageLive(_14);
+        _14 = core::panicking::AssertKind::Eq;
+        FakeRead(ForLet(None), _14);
+        StorageLive(_15);
+        StorageLive(_16);
+        _16 = move _14;
+        StorageLive(_17);
+        StorageLive(_18);
+        _18 = &(*_8);
+        _17 = &(*_18);
+        StorageLive(_19);
+        StorageLive(_20);
+        _20 = &(*_9);
+        _19 = &(*_20);
+        StorageLive(_21);
+        _21 = Option::<Arguments<'_>>::None;
+        _15 = core::panicking::assert_failed::<&[u8], &[u8; 4]>(move _16, move _17, move _19, move _21) -> bb21;
+    }
+
+    bb6: {
+        StorageDead(_21);
+        StorageDead(_19);
+        StorageDead(_17);
+        StorageDead(_16);
+        StorageDead(_20);
+        StorageDead(_18);
+        StorageDead(_15);
+        StorageDead(_14);
+        unreachable;
+    }
+
+    bb7: {
+        goto -> bb9;
+    }
+
+    bb8: {
+        _1 = const ();
+        goto -> bb9;
+    }
+
+    bb9: {
+        StorageDead(_10);
+        StorageDead(_9);
+        StorageDead(_8);
+        goto -> bb10;
+    }
+
+    bb10: {
+        StorageDead(_7);
+        StorageDead(_6);
+        StorageDead(_4);
+        StorageDead(_2);
+        StorageDead(_1);
+        StorageLive(_22);
+        StorageLive(_23);
+        StorageLive(_24);
+        StorageLive(_25);
+        _25 = function_with_bytes::<&*b"AAAA">() -> [return: bb11, unwind: bb21];
+    }
+
+    bb11: {
+        _24 = &_25;
+        StorageLive(_26);
+        StorageLive(_27);
+        _27 = const b"AAAA";
+        _26 = &_27;
+        _23 = (move _24, move _26);
+        StorageDead(_26);
+        StorageDead(_24);
+        FakeRead(ForMatchedPlace(None), _23);
+        StorageLive(_28);
+        _28 = (_23.0: &&[u8]);
+        StorageLive(_29);
+        _29 = (_23.1: &&[u8; 4]);
+        StorageLive(_30);
+        StorageLive(_31);
+        _31 = &(*_28);
+        StorageLive(_32);
+        _32 = &(*_29);
+        _30 = <&[u8] as PartialEq<&[u8; 4]>>::eq(move _31, move _32) -> [return: bb12, unwind: bb21];
+    }
+
+    bb12: {
+        switchInt(move _30) -> [0: bb14, otherwise: bb13];
+    }
+
+    bb13: {
+        StorageDead(_32);
+        StorageDead(_31);
+        goto -> bb18;
+    }
+
+    bb14: {
+        goto -> bb15;
+    }
+
+    bb15: {
+        StorageDead(_32);
+        StorageDead(_31);
+        StorageLive(_34);
+        _34 = core::panicking::AssertKind::Eq;
+        FakeRead(ForLet(None), _34);
+        StorageLive(_35);
+        StorageLive(_36);
+        _36 = move _34;
+        StorageLive(_37);
+        StorageLive(_38);
+        _38 = &(*_28);
+        _37 = &(*_38);
+        StorageLive(_39);
+        StorageLive(_40);
+        _40 = &(*_29);
+        _39 = &(*_40);
+        StorageLive(_41);
+        _41 = Option::<Arguments<'_>>::None;
+        _35 = core::panicking::assert_failed::<&[u8], &[u8; 4]>(move _36, move _37, move _39, move _41) -> bb21;
+    }
+
+    bb16: {
+        StorageDead(_41);
+        StorageDead(_39);
+        StorageDead(_37);
+        StorageDead(_36);
+        StorageDead(_40);
+        StorageDead(_38);
+        StorageDead(_35);
+        StorageDead(_34);
+        unreachable;
+    }
+
+    bb17: {
+        goto -> bb19;
+    }
+
+    bb18: {
+        _22 = const ();
+        goto -> bb19;
+    }
+
+    bb19: {
+        StorageDead(_30);
+        StorageDead(_29);
+        StorageDead(_28);
+        goto -> bb20;
+    }
+
+    bb20: {
+        StorageDead(_27);
+        StorageDead(_25);
+        StorageDead(_23);
+        StorageDead(_22);
+        _0 = const ();
+        return;
+    }
+
+    bb21 (cleanup): {
+        resume;
+    }
+}
+
+alloc4 (size: 4, align: 1) {
+    41 41 41 41                                     │ AAAA
+}
diff --git a/tests/mir-opt/issue_99325.rs b/tests/mir-opt/issue_99325.rs
index fe819cddb2c..3603228a502 100644
--- a/tests/mir-opt/issue_99325.rs
+++ b/tests/mir-opt/issue_99325.rs
@@ -1,3 +1,5 @@
+// EMIT_MIR_FOR_EACH_BIT_WIDTH
+
 #![feature(adt_const_params)]
 #![allow(incomplete_features)]
 
diff --git a/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-abort.diff b/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-abort.diff
index 6174d5259d0..5242c5f6afd 100644
--- a/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-abort.diff
+++ b/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-abort.diff
@@ -32,12 +32,12 @@
       bb1: {
           StorageDead(_6);
           _3 = Lt(move _4, move _5);
-          StorageDead(_5);
-          StorageDead(_4);
           switchInt(move _3) -> [0: bb4, otherwise: bb2];
       }
   
       bb2: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_8);
           _8 = _1;
           _9 = Len((*_2));
@@ -52,6 +52,8 @@
       }
   
       bb4: {
+          StorageDead(_5);
+          StorageDead(_4);
           _0 = const 42_u8;
           goto -> bb5;
       }
diff --git a/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-unwind.diff b/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-unwind.diff
index 60c0772d8ec..a9e99933b12 100644
--- a/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-unwind.diff
+++ b/tests/mir-opt/lower_array_len.array_bound.NormalizeArrayLen.panic-unwind.diff
@@ -32,12 +32,12 @@
       bb1: {
           StorageDead(_6);
           _3 = Lt(move _4, move _5);
-          StorageDead(_5);
-          StorageDead(_4);
           switchInt(move _3) -> [0: bb4, otherwise: bb2];
       }
   
       bb2: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_8);
           _8 = _1;
           _9 = Len((*_2));
@@ -52,6 +52,8 @@
       }
   
       bb4: {
+          StorageDead(_5);
+          StorageDead(_4);
           _0 = const 42_u8;
           goto -> bb5;
       }
diff --git a/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-abort.diff b/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-abort.diff
index e2de1845296..7749ba6beca 100644
--- a/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-abort.diff
+++ b/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-abort.diff
@@ -35,12 +35,12 @@
       bb1: {
           StorageDead(_6);
           _3 = Lt(move _4, move _5);
-          StorageDead(_5);
-          StorageDead(_4);
           switchInt(move _3) -> [0: bb4, otherwise: bb2];
       }
   
       bb2: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_8);
           _8 = _1;
           _9 = Len((*_2));
@@ -55,6 +55,8 @@
       }
   
       bb4: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_11);
           _11 = const 0_usize;
           _12 = Len((*_2));
diff --git a/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-unwind.diff b/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-unwind.diff
index eb81e0eea2c..fcc2c1653dc 100644
--- a/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-unwind.diff
+++ b/tests/mir-opt/lower_array_len.array_bound_mut.NormalizeArrayLen.panic-unwind.diff
@@ -35,12 +35,12 @@
       bb1: {
           StorageDead(_6);
           _3 = Lt(move _4, move _5);
-          StorageDead(_5);
-          StorageDead(_4);
           switchInt(move _3) -> [0: bb4, otherwise: bb2];
       }
   
       bb2: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_8);
           _8 = _1;
           _9 = Len((*_2));
@@ -55,6 +55,8 @@
       }
   
       bb4: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_11);
           _11 = const 0_usize;
           _12 = Len((*_2));
diff --git a/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-abort.diff b/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-abort.diff
index 95a4a83d663..b2cf3cc1cca 100644
--- a/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-abort.diff
+++ b/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-abort.diff
@@ -12,6 +12,7 @@
           StorageLive(_2);
           _2 = &raw const (*_1);
 -         _0 = read_via_copy::<Never>(move _2) -> unwind unreachable;
++         _0 = (*_2);
 +         unreachable;
       }
   }
diff --git a/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-unwind.diff b/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-unwind.diff
index 95a4a83d663..b2cf3cc1cca 100644
--- a/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-unwind.diff
+++ b/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.panic-unwind.diff
@@ -12,6 +12,7 @@
           StorageLive(_2);
           _2 = &raw const (*_1);
 -         _0 = read_via_copy::<Never>(move _2) -> unwind unreachable;
++         _0 = (*_2);
 +         unreachable;
       }
   }
diff --git a/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-abort.diff b/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-abort.diff
index 70b33fb703b..7f752ca0f5a 100644
--- a/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-abort.diff
+++ b/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-abort.diff
@@ -28,12 +28,12 @@
       bb1: {
           StorageDead(_6);
           _3 = Lt(move _4, move _5);
-          StorageDead(_5);
-          StorageDead(_4);
           switchInt(move _3) -> [0: bb4, otherwise: bb2];
       }
   
       bb2: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_7);
           _7 = _1;
           _8 = Len((*_2));
@@ -48,6 +48,8 @@
       }
   
       bb4: {
+          StorageDead(_5);
+          StorageDead(_4);
           _0 = const 42_u8;
           goto -> bb5;
       }
diff --git a/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-unwind.diff b/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-unwind.diff
index 310b3b26ac5..d73b563a0e5 100644
--- a/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-unwind.diff
+++ b/tests/mir-opt/lower_slice_len.bound.LowerSliceLenCalls.panic-unwind.diff
@@ -28,12 +28,12 @@
       bb1: {
           StorageDead(_6);
           _3 = Lt(move _4, move _5);
-          StorageDead(_5);
-          StorageDead(_4);
           switchInt(move _3) -> [0: bb4, otherwise: bb2];
       }
   
       bb2: {
+          StorageDead(_5);
+          StorageDead(_4);
           StorageLive(_7);
           _7 = _1;
           _8 = Len((*_2));
@@ -48,6 +48,8 @@
       }
   
       bb4: {
+          StorageDead(_5);
+          StorageDead(_4);
           _0 = const 42_u8;
           goto -> bb5;
       }
diff --git a/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff b/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
index b5edbfee0fc..5a71bef9341 100644
--- a/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
+++ b/tests/mir-opt/matches_reduce_branches.match_nested_if.MatchBranchSimplification.diff
@@ -40,39 +40,43 @@
 -     }
 - 
 -     bb3: {
+-         switchInt(move _5) -> [0: bb5, otherwise: bb4];
+-     }
+- 
+-     bb4: {
 +         StorageLive(_7);
 +         _7 = move _6;
 +         _5 = Ne(_7, const false);
 +         StorageDead(_7);
++         StorageLive(_8);
++         _8 = move _5;
           StorageDead(_6);
--         switchInt(move _5) -> [0: bb5, otherwise: bb4];
--     }
-- 
--     bb4: {
 -         _4 = const true;
 -         goto -> bb6;
 -     }
 - 
 -     bb5: {
+-         StorageDead(_6);
 -         _4 = const false;
 -         goto -> bb6;
 -     }
 - 
 -     bb6: {
-+         StorageLive(_8);
-+         _8 = move _5;
-+         _4 = Ne(_8, const false);
-+         StorageDead(_8);
-          StorageDead(_5);
 -         switchInt(move _4) -> [0: bb8, otherwise: bb7];
 -     }
 - 
 -     bb7: {
++         _4 = Ne(_8, const false);
++         StorageDead(_8);
++         StorageLive(_9);
++         _9 = move _4;
+          StorageDead(_5);
 -         _3 = const true;
 -         goto -> bb9;
 -     }
 - 
 -     bb8: {
+-         StorageDead(_5);
 -         _3 = const false;
 -         goto -> bb9;
 -     }
@@ -82,8 +86,6 @@
 -     }
 - 
 -     bb10: {
-+         StorageLive(_9);
-+         _9 = move _4;
 +         _3 = Ne(_9, const false);
 +         StorageDead(_9);
 +         StorageLive(_10);
diff --git a/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir b/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir
index 56b0f816573..c581d0f8471 100644
--- a/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir
+++ b/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.32bit.mir
@@ -22,7 +22,7 @@
 |
 fn main() -> () {
     let mut _0: ();
-    let mut _1: [usize; Const { ty: usize, kind: Leaf(0x00000003) }];
+    let mut _1: [usize; ValTree(Leaf(0x00000003): usize)];
     let _3: usize;
     let mut _4: usize;
     let mut _5: bool;
diff --git a/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir b/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir
index 83b851eed74..48243e34d08 100644
--- a/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir
+++ b/tests/mir-opt/nll/region_subtyping_basic.main.nll.0.64bit.mir
@@ -22,7 +22,7 @@
 |
 fn main() -> () {
     let mut _0: ();
-    let mut _1: [usize; Const { ty: usize, kind: Leaf(0x0000000000000003) }];
+    let mut _1: [usize; ValTree(Leaf(0x0000000000000003): usize)];
     let _3: usize;
     let mut _4: usize;
     let mut _5: bool;
diff --git a/tests/mir-opt/not_equal_false.opt.InstSimplify.diff b/tests/mir-opt/not_equal_false.opt.InstSimplify.diff
index 71353be24a6..1342966aa15 100644
--- a/tests/mir-opt/not_equal_false.opt.InstSimplify.diff
+++ b/tests/mir-opt/not_equal_false.opt.InstSimplify.diff
@@ -13,16 +13,17 @@
           _3 = _1;
 -         _2 = Ne(move _3, const false);
 +         _2 = move _3;
-          StorageDead(_3);
           switchInt(move _2) -> [0: bb2, otherwise: bb1];
       }
   
       bb1: {
+          StorageDead(_3);
           _0 = const 0_u32;
           goto -> bb3;
       }
   
       bb2: {
+          StorageDead(_3);
           _0 = const 1_u32;
           goto -> bb3;
       }
diff --git a/tests/mir-opt/pre-codegen/chained_comparison.naive.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/chained_comparison.naive.PreCodegen.after.mir
index c7fd397fcd4..838e30fa35e 100644
--- a/tests/mir-opt/pre-codegen/chained_comparison.naive.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/chained_comparison.naive.PreCodegen.after.mir
@@ -7,130 +7,111 @@ fn naive(_1: &Blueprint, _2: &Blueprint) -> bool {
     let mut _3: u32;
     let mut _4: u32;
     let mut _5: bool;
-    let mut _6: bool;
+    let mut _6: u32;
     let mut _7: u32;
-    let mut _8: u32;
-    let mut _9: bool;
-    let mut _10: bool;
-    let mut _11: u32;
+    let mut _8: bool;
+    let mut _9: u32;
+    let mut _10: u32;
+    let mut _11: bool;
     let mut _12: u32;
-    let mut _13: bool;
+    let mut _13: u32;
     let mut _14: bool;
     let mut _15: u32;
     let mut _16: u32;
-    let mut _17: bool;
-    let mut _18: u32;
-    let mut _19: u32;
-    let mut _20: bool;
 
     bb0: {
-        StorageLive(_14);
-        StorageLive(_10);
-        StorageLive(_6);
         StorageLive(_5);
         StorageLive(_3);
         _3 = ((*_1).0: u32);
         StorageLive(_4);
         _4 = ((*_2).0: u32);
         _5 = Eq(move _3, move _4);
-        StorageDead(_4);
-        StorageDead(_3);
         switchInt(move _5) -> [0: bb1, otherwise: bb2];
     }
 
     bb1: {
-        _6 = const false;
-        goto -> bb3;
+        StorageDead(_4);
+        StorageDead(_3);
+        goto -> bb8;
     }
 
     bb2: {
-        StorageLive(_9);
-        StorageLive(_7);
-        _7 = ((*_1).1: u32);
+        StorageDead(_4);
+        StorageDead(_3);
         StorageLive(_8);
-        _8 = ((*_2).1: u32);
-        _9 = Eq(move _7, move _8);
-        StorageDead(_8);
-        StorageDead(_7);
-        _6 = move _9;
-        goto -> bb3;
+        StorageLive(_6);
+        _6 = ((*_1).1: u32);
+        StorageLive(_7);
+        _7 = ((*_2).1: u32);
+        _8 = Eq(move _6, move _7);
+        switchInt(move _8) -> [0: bb3, otherwise: bb4];
     }
 
     bb3: {
-        StorageDead(_9);
-        StorageDead(_5);
-        switchInt(move _6) -> [0: bb4, otherwise: bb5];
+        StorageDead(_7);
+        StorageDead(_6);
+        goto -> bb8;
     }
 
     bb4: {
-        _10 = const false;
-        goto -> bb6;
+        StorageDead(_7);
+        StorageDead(_6);
+        StorageLive(_11);
+        StorageLive(_9);
+        _9 = ((*_1).2: u32);
+        StorageLive(_10);
+        _10 = ((*_2).2: u32);
+        _11 = Eq(move _9, move _10);
+        switchInt(move _11) -> [0: bb5, otherwise: bb6];
     }
 
     bb5: {
-        StorageLive(_13);
-        StorageLive(_11);
-        _11 = ((*_1).2: u32);
-        StorageLive(_12);
-        _12 = ((*_2).2: u32);
-        _13 = Eq(move _11, move _12);
-        StorageDead(_12);
-        StorageDead(_11);
-        _10 = move _13;
-        goto -> bb6;
+        StorageDead(_10);
+        StorageDead(_9);
+        goto -> bb8;
     }
 
     bb6: {
-        StorageDead(_13);
-        StorageDead(_6);
-        switchInt(move _10) -> [0: bb7, otherwise: bb8];
+        StorageDead(_10);
+        StorageDead(_9);
+        StorageLive(_14);
+        StorageLive(_12);
+        _12 = ((*_1).3: u32);
+        StorageLive(_13);
+        _13 = ((*_2).3: u32);
+        _14 = Eq(move _12, move _13);
+        switchInt(move _14) -> [0: bb7, otherwise: bb9];
     }
 
     bb7: {
-        _14 = const false;
-        goto -> bb9;
+        StorageDead(_13);
+        StorageDead(_12);
+        goto -> bb8;
     }
 
     bb8: {
-        StorageLive(_17);
+        _0 = const false;
+        goto -> bb10;
+    }
+
+    bb9: {
+        StorageDead(_13);
+        StorageDead(_12);
         StorageLive(_15);
-        _15 = ((*_1).3: u32);
+        _15 = ((*_1).4: u32);
         StorageLive(_16);
-        _16 = ((*_2).3: u32);
-        _17 = Eq(move _15, move _16);
+        _16 = ((*_2).4: u32);
+        _0 = Eq(move _15, move _16);
         StorageDead(_16);
         StorageDead(_15);
-        _14 = move _17;
-        goto -> bb9;
-    }
-
-    bb9: {
-        StorageDead(_17);
-        StorageDead(_10);
-        switchInt(move _14) -> [0: bb10, otherwise: bb11];
+        goto -> bb10;
     }
 
     bb10: {
-        _0 = const false;
-        goto -> bb12;
-    }
-
-    bb11: {
-        StorageLive(_20);
-        StorageLive(_18);
-        _18 = ((*_1).4: u32);
-        StorageLive(_19);
-        _19 = ((*_2).4: u32);
-        _20 = Eq(move _18, move _19);
-        StorageDead(_19);
-        StorageDead(_18);
-        _0 = move _20;
-        goto -> bb12;
-    }
-
-    bb12: {
-        StorageDead(_20);
         StorageDead(_14);
+        StorageDead(_11);
+        StorageDead(_8);
+        StorageDead(_5);
         return;
     }
 }
diff --git a/tests/mir-opt/pre-codegen/chained_comparison.returning.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/chained_comparison.returning.PreCodegen.after.mir
index 1e619bc9704..8452fa12f31 100644
--- a/tests/mir-opt/pre-codegen/chained_comparison.returning.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/chained_comparison.returning.PreCodegen.after.mir
@@ -27,12 +27,12 @@ fn returning(_1: &Blueprint, _2: &Blueprint) -> bool {
         StorageLive(_4);
         _4 = ((*_2).0: u32);
         _5 = Ne(move _3, move _4);
-        StorageDead(_4);
-        StorageDead(_3);
         switchInt(move _5) -> [0: bb1, otherwise: bb10];
     }
 
     bb1: {
+        StorageDead(_4);
+        StorageDead(_3);
         StorageDead(_5);
         StorageLive(_8);
         StorageLive(_6);
@@ -40,12 +40,12 @@ fn returning(_1: &Blueprint, _2: &Blueprint) -> bool {
         StorageLive(_7);
         _7 = ((*_2).1: u32);
         _8 = Ne(move _6, move _7);
-        StorageDead(_7);
-        StorageDead(_6);
         switchInt(move _8) -> [0: bb2, otherwise: bb9];
     }
 
     bb2: {
+        StorageDead(_7);
+        StorageDead(_6);
         StorageDead(_8);
         StorageLive(_11);
         StorageLive(_9);
@@ -53,12 +53,12 @@ fn returning(_1: &Blueprint, _2: &Blueprint) -> bool {
         StorageLive(_10);
         _10 = ((*_2).2: u32);
         _11 = Ne(move _9, move _10);
-        StorageDead(_10);
-        StorageDead(_9);
         switchInt(move _11) -> [0: bb3, otherwise: bb8];
     }
 
     bb3: {
+        StorageDead(_10);
+        StorageDead(_9);
         StorageDead(_11);
         StorageLive(_14);
         StorageLive(_12);
@@ -66,12 +66,12 @@ fn returning(_1: &Blueprint, _2: &Blueprint) -> bool {
         StorageLive(_13);
         _13 = ((*_2).3: u32);
         _14 = Ne(move _12, move _13);
-        StorageDead(_13);
-        StorageDead(_12);
         switchInt(move _14) -> [0: bb4, otherwise: bb7];
     }
 
     bb4: {
+        StorageDead(_13);
+        StorageDead(_12);
         StorageDead(_14);
         StorageLive(_17);
         StorageLive(_15);
@@ -79,42 +79,52 @@ fn returning(_1: &Blueprint, _2: &Blueprint) -> bool {
         StorageLive(_16);
         _16 = ((*_2).4: u32);
         _17 = Ne(move _15, move _16);
-        StorageDead(_16);
-        StorageDead(_15);
         switchInt(move _17) -> [0: bb5, otherwise: bb6];
     }
 
     bb5: {
+        StorageDead(_16);
+        StorageDead(_15);
         StorageDead(_17);
         _0 = const true;
         goto -> bb11;
     }
 
     bb6: {
+        StorageDead(_16);
+        StorageDead(_15);
         _0 = const false;
         StorageDead(_17);
         goto -> bb11;
     }
 
     bb7: {
+        StorageDead(_13);
+        StorageDead(_12);
         _0 = const false;
         StorageDead(_14);
         goto -> bb11;
     }
 
     bb8: {
+        StorageDead(_10);
+        StorageDead(_9);
         _0 = const false;
         StorageDead(_11);
         goto -> bb11;
     }
 
     bb9: {
+        StorageDead(_7);
+        StorageDead(_6);
         _0 = const false;
         StorageDead(_8);
         goto -> bb11;
     }
 
     bb10: {
+        StorageDead(_4);
+        StorageDead(_3);
         _0 = const false;
         StorageDead(_5);
         goto -> bb11;
diff --git a/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir
index b2ea96f033e..75f81c5aaca 100644
--- a/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/checked_ops.step_forward.PreCodegen.after.mir
@@ -40,16 +40,22 @@ fn step_forward(_1: u32, _2: usize) -> u32 {
         _5 = Eq(_4, const 1_isize);
         _6 = Not(move _5);
         StorageDead(_5);
-        StorageDead(_3);
-        StorageDead(_8);
-        switchInt(move _6) -> [0: bb3, otherwise: bb2];
+        switchInt(move _6) -> [0: bb2, otherwise: bb3];
     }
 
     bb2: {
-        assert(!const true, "attempt to compute `{} + {}`, which would overflow", const _, const 1_u32) -> [success: bb3, unwind continue];
+        StorageDead(_3);
+        StorageDead(_8);
+        goto -> bb4;
     }
 
     bb3: {
+        StorageDead(_3);
+        StorageDead(_8);
+        assert(!const true, "attempt to compute `{} + {}`, which would overflow", const _, const 1_u32) -> [success: bb4, unwind continue];
+    }
+
+    bb4: {
         StorageDead(_6);
         StorageLive(_7);
         _7 = _2 as u32 (IntToInt);
diff --git a/tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir
index 2e51faeba5a..0d79f2de10d 100644
--- a/tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/loops.int_range.PreCodegen.after.mir
@@ -63,17 +63,19 @@ fn int_range(_1: usize, _2: usize) -> () {
         _7 = Lt(move _5, move _6);
         StorageDead(_6);
         StorageDead(_5);
-        StorageDead(_16);
-        StorageDead(_15);
         switchInt(move _7) -> [0: bb2, otherwise: bb3];
     }
 
     bb2: {
+        StorageDead(_16);
+        StorageDead(_15);
         _8 = Option::<usize>::None;
         goto -> bb5;
     }
 
     bb3: {
+        StorageDead(_16);
+        StorageDead(_15);
         _9 = (_4.0: usize);
         StorageLive(_10);
         _10 = <usize as Step>::forward_unchecked(_9, const 1_usize) -> [return: bb4, unwind continue];
diff --git a/tests/mir-opt/pre-codegen/mem_replace.mem_replace.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/mem_replace.mem_replace.PreCodegen.after.mir
index 26919dd98dd..630babaa821 100644
--- a/tests/mir-opt/pre-codegen/mem_replace.mem_replace.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/mem_replace.mem_replace.PreCodegen.after.mir
@@ -10,23 +10,53 @@ fn mem_replace(_1: &mut u32, _2: u32) -> u32 {
         scope 2 {
             scope 3 {
                 debug result => _0;
-                scope 6 (inlined std::ptr::write::<u32>) {
+                scope 16 (inlined std::ptr::write::<u32>) {
                     debug dst => _1;
                     debug src => _2;
-                    scope 7 {
+                    scope 17 {
                     }
                 }
             }
             scope 4 (inlined std::ptr::read::<u32>) {
                 debug src => _1;
                 scope 5 {
+                    scope 6 (inlined std::ptr::read::runtime::<u32>) {
+                        debug src => _1;
+                        scope 7 (inlined intrinsics::is_aligned_and_not_null::<u32>) {
+                            debug ptr => _1;
+                            scope 8 (inlined ptr::const_ptr::<impl *const u32>::is_null) {
+                                debug self => _1;
+                                let mut _3: *const u8;
+                                scope 9 {
+                                    scope 10 (inlined ptr::const_ptr::<impl *const T>::is_null::runtime_impl) {
+                                        debug ptr => _3;
+                                        scope 11 (inlined ptr::const_ptr::<impl *const u8>::addr) {
+                                            debug self => _3;
+                                            scope 12 {
+                                                scope 13 (inlined ptr::const_ptr::<impl *const u8>::cast::<()>) {
+                                                    debug self => _3;
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+                            }
+                            scope 14 (inlined ptr::const_ptr::<impl *const u32>::is_aligned) {
+                                debug self => _1;
+                                scope 15 (inlined align_of::<u32>) {
+                                }
+                            }
+                        }
+                    }
                 }
             }
         }
     }
 
     bb0: {
+        StorageLive(_3);
         _0 = (*_1);
+        StorageDead(_3);
         (*_1) = _2;
         return;
     }
diff --git a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-abort.diff b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-abort.diff
index 2c607b4c055..681e9666e0f 100644
--- a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-abort.diff
+++ b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-abort.diff
@@ -55,5 +55,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     04 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-unwind.diff b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-unwind.diff
index b6929f3f93c..db16b8d82d2 100644
--- a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-unwind.diff
+++ b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.32bit.panic-unwind.diff
@@ -55,5 +55,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     04 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-abort.diff b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-abort.diff
index 2c607b4c055..681e9666e0f 100644
--- a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-abort.diff
+++ b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-abort.diff
@@ -55,5 +55,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     04 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-unwind.diff b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-unwind.diff
index b6929f3f93c..db16b8d82d2 100644
--- a/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-unwind.diff
+++ b/tests/mir-opt/pre-codegen/optimizes_into_variable.main.ConstProp.64bit.panic-unwind.diff
@@ -55,5 +55,9 @@
           StorageDead(_1);
           return;
       }
++ }
++ 
++ alloc5 (size: 8, align: 4) {
++     04 00 00 00 00 __ __ __                         │ .....░░░
   }
   
diff --git a/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-abort.mir b/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-abort.mir
index d76b46bdd94..9664ccfb094 100644
--- a/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-abort.mir
+++ b/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-abort.mir
@@ -66,17 +66,19 @@ fn forward_loop(_1: u32, _2: u32, _3: impl Fn(u32)) -> () {
         _8 = Lt(move _6, move _7);
         StorageDead(_7);
         StorageDead(_6);
-        StorageDead(_19);
-        StorageDead(_18);
         switchInt(move _8) -> [0: bb2, otherwise: bb3];
     }
 
     bb2: {
+        StorageDead(_19);
+        StorageDead(_18);
         _9 = Option::<u32>::None;
         goto -> bb5;
     }
 
     bb3: {
+        StorageDead(_19);
+        StorageDead(_18);
         _10 = (_5.0: u32);
         StorageLive(_11);
         _11 = <u32 as Step>::forward_unchecked(_10, const 1_usize) -> [return: bb4, unwind unreachable];
diff --git a/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-unwind.mir b/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-unwind.mir
index 35f7356d47a..dc8b46b6c08 100644
--- a/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-unwind.mir
+++ b/tests/mir-opt/pre-codegen/range_iter.forward_loop.PreCodegen.after.panic-unwind.mir
@@ -66,17 +66,19 @@ fn forward_loop(_1: u32, _2: u32, _3: impl Fn(u32)) -> () {
         _8 = Lt(move _6, move _7);
         StorageDead(_7);
         StorageDead(_6);
-        StorageDead(_19);
-        StorageDead(_18);
         switchInt(move _8) -> [0: bb2, otherwise: bb3];
     }
 
     bb2: {
+        StorageDead(_19);
+        StorageDead(_18);
         _9 = Option::<u32>::None;
         goto -> bb5;
     }
 
     bb3: {
+        StorageDead(_19);
+        StorageDead(_18);
         _10 = (_5.0: u32);
         StorageLive(_11);
         _11 = <u32 as Step>::forward_unchecked(_10, const 1_usize) -> [return: bb4, unwind: bb11];
diff --git a/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-abort.mir b/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-abort.mir
index 7360aa3e698..fff713b5a79 100644
--- a/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-abort.mir
+++ b/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-abort.mir
@@ -38,17 +38,19 @@ fn range_iter_next(_1: &mut std::ops::Range<u32>) -> Option<u32> {
         _4 = Lt(move _2, move _3);
         StorageDead(_3);
         StorageDead(_2);
-        StorageDead(_8);
-        StorageDead(_7);
         switchInt(move _4) -> [0: bb1, otherwise: bb2];
     }
 
     bb1: {
+        StorageDead(_8);
+        StorageDead(_7);
         _0 = Option::<u32>::None;
         goto -> bb4;
     }
 
     bb2: {
+        StorageDead(_8);
+        StorageDead(_7);
         _5 = ((*_1).0: u32);
         StorageLive(_6);
         _6 = <u32 as Step>::forward_unchecked(_5, const 1_usize) -> [return: bb3, unwind unreachable];
diff --git a/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-unwind.mir b/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-unwind.mir
index 61957082d8b..cc12c0122b7 100644
--- a/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-unwind.mir
+++ b/tests/mir-opt/pre-codegen/range_iter.range_iter_next.PreCodegen.after.panic-unwind.mir
@@ -38,17 +38,19 @@ fn range_iter_next(_1: &mut std::ops::Range<u32>) -> Option<u32> {
         _4 = Lt(move _2, move _3);
         StorageDead(_3);
         StorageDead(_2);
-        StorageDead(_8);
-        StorageDead(_7);
         switchInt(move _4) -> [0: bb1, otherwise: bb2];
     }
 
     bb1: {
+        StorageDead(_8);
+        StorageDead(_7);
         _0 = Option::<u32>::None;
         goto -> bb4;
     }
 
     bb2: {
+        StorageDead(_8);
+        StorageDead(_7);
         _5 = ((*_1).0: u32);
         StorageLive(_6);
         _6 = <u32 as Step>::forward_unchecked(_5, const 1_usize) -> [return: bb3, unwind continue];
diff --git a/tests/mir-opt/pre-codegen/slice_filter.variant_a-{closure#0}.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/slice_filter.variant_a-{closure#0}.PreCodegen.after.mir
index 1488779f93b..ddfd5b0fefc 100644
--- a/tests/mir-opt/pre-codegen/slice_filter.variant_a-{closure#0}.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/slice_filter.variant_a-{closure#0}.PreCodegen.after.mir
@@ -12,30 +12,27 @@ fn variant_a::{closure#0}(_1: &mut [closure@$DIR/slice_filter.rs:7:25: 7:39], _2
     let _10: &usize;
     let _11: &usize;
     let mut _16: bool;
-    let mut _17: bool;
-    let _18: &usize;
-    let mut _23: bool;
-    let _24: &usize;
-    let mut _29: bool;
-    let mut _30: bool;
-    let _31: &usize;
-    let mut _36: bool;
+    let _17: &usize;
+    let mut _22: bool;
+    let _23: &usize;
+    let mut _28: bool;
+    let _29: &usize;
+    let mut _34: &&usize;
+    let mut _35: &&usize;
+    let mut _36: &&usize;
     let mut _37: &&usize;
     let mut _38: &&usize;
     let mut _39: &&usize;
     let mut _40: &&usize;
     let mut _41: &&usize;
-    let mut _42: &&usize;
-    let mut _43: &&usize;
-    let mut _44: &&usize;
     scope 1 {
         debug a => _4;
         debug b => _6;
         debug c => _8;
         debug d => _10;
         scope 2 (inlined cmp::impls::<impl PartialOrd for &usize>::le) {
-            debug self => _37;
-            debug other => _38;
+            debug self => _34;
+            debug other => _35;
             let mut _12: &usize;
             let mut _13: &usize;
             scope 3 (inlined cmp::impls::<impl PartialOrd for usize>::le) {
@@ -46,39 +43,39 @@ fn variant_a::{closure#0}(_1: &mut [closure@$DIR/slice_filter.rs:7:25: 7:39], _2
             }
         }
         scope 4 (inlined cmp::impls::<impl PartialOrd for &usize>::le) {
-            debug self => _41;
-            debug other => _42;
-            let mut _25: &usize;
-            let mut _26: &usize;
+            debug self => _36;
+            debug other => _37;
+            let mut _18: &usize;
+            let mut _19: &usize;
             scope 5 (inlined cmp::impls::<impl PartialOrd for usize>::le) {
-                debug self => _25;
-                debug other => _26;
-                let mut _27: usize;
-                let mut _28: usize;
+                debug self => _18;
+                debug other => _19;
+                let mut _20: usize;
+                let mut _21: usize;
             }
         }
         scope 6 (inlined cmp::impls::<impl PartialOrd for &usize>::le) {
-            debug self => _39;
-            debug other => _40;
-            let mut _19: &usize;
-            let mut _20: &usize;
+            debug self => _38;
+            debug other => _39;
+            let mut _24: &usize;
+            let mut _25: &usize;
             scope 7 (inlined cmp::impls::<impl PartialOrd for usize>::le) {
-                debug self => _19;
-                debug other => _20;
-                let mut _21: usize;
-                let mut _22: usize;
+                debug self => _24;
+                debug other => _25;
+                let mut _26: usize;
+                let mut _27: usize;
             }
         }
         scope 8 (inlined cmp::impls::<impl PartialOrd for &usize>::le) {
-            debug self => _43;
-            debug other => _44;
-            let mut _32: &usize;
-            let mut _33: &usize;
+            debug self => _40;
+            debug other => _41;
+            let mut _30: &usize;
+            let mut _31: &usize;
             scope 9 (inlined cmp::impls::<impl PartialOrd for usize>::le) {
-                debug self => _32;
-                debug other => _33;
-                let mut _34: usize;
-                let mut _35: usize;
+                debug self => _30;
+                debug other => _31;
+                let mut _32: usize;
+                let mut _33: usize;
             }
         }
     }
@@ -96,10 +93,9 @@ fn variant_a::{closure#0}(_1: &mut [closure@$DIR/slice_filter.rs:7:25: 7:39], _2
         StorageLive(_10);
         _9 = deref_copy (*_2);
         _10 = &((*_9).3: usize);
-        StorageLive(_17);
         StorageLive(_16);
-        StorageLive(_37);
-        StorageLive(_38);
+        StorageLive(_34);
+        StorageLive(_35);
         StorageLive(_11);
         _11 = _8;
         _12 = deref_copy _4;
@@ -111,109 +107,109 @@ fn variant_a::{closure#0}(_1: &mut [closure@$DIR/slice_filter.rs:7:25: 7:39], _2
         _16 = Le(move _14, move _15);
         StorageDead(_15);
         StorageDead(_14);
-        StorageDead(_11);
-        StorageDead(_38);
-        StorageDead(_37);
         switchInt(move _16) -> [0: bb1, otherwise: bb2];
     }
 
     bb1: {
-        _17 = const false;
-        goto -> bb3;
+        StorageDead(_11);
+        StorageDead(_35);
+        StorageDead(_34);
+        goto -> bb4;
     }
 
     bb2: {
-        StorageLive(_23);
-        StorageLive(_39);
-        StorageLive(_40);
-        StorageLive(_18);
-        _18 = _6;
-        _19 = deref_copy _10;
-        _20 = deref_copy _18;
+        StorageDead(_11);
+        StorageDead(_35);
+        StorageDead(_34);
+        StorageLive(_22);
+        StorageLive(_36);
+        StorageLive(_37);
+        StorageLive(_17);
+        _17 = _6;
+        _18 = deref_copy _10;
+        _19 = deref_copy _17;
+        StorageLive(_20);
+        _20 = (*_18);
         StorageLive(_21);
         _21 = (*_19);
-        StorageLive(_22);
-        _22 = (*_20);
-        _23 = Le(move _21, move _22);
-        StorageDead(_22);
+        _22 = Le(move _20, move _21);
         StorageDead(_21);
-        StorageDead(_18);
-        StorageDead(_40);
-        StorageDead(_39);
-        _17 = move _23;
-        goto -> bb3;
+        StorageDead(_20);
+        switchInt(move _22) -> [0: bb3, otherwise: bb8];
     }
 
     bb3: {
-        StorageDead(_23);
-        StorageDead(_16);
-        switchInt(move _17) -> [0: bb4, otherwise: bb8];
+        StorageDead(_17);
+        StorageDead(_37);
+        StorageDead(_36);
+        goto -> bb4;
     }
 
     bb4: {
-        StorageLive(_30);
-        StorageLive(_29);
-        StorageLive(_41);
-        StorageLive(_42);
-        StorageLive(_24);
-        _24 = _4;
-        _25 = deref_copy _8;
-        _26 = deref_copy _24;
+        StorageLive(_28);
+        StorageLive(_38);
+        StorageLive(_39);
+        StorageLive(_23);
+        _23 = _4;
+        _24 = deref_copy _8;
+        _25 = deref_copy _23;
+        StorageLive(_26);
+        _26 = (*_24);
         StorageLive(_27);
         _27 = (*_25);
-        StorageLive(_28);
-        _28 = (*_26);
-        _29 = Le(move _27, move _28);
-        StorageDead(_28);
+        _28 = Le(move _26, move _27);
         StorageDead(_27);
-        StorageDead(_24);
-        StorageDead(_42);
-        StorageDead(_41);
-        switchInt(move _29) -> [0: bb5, otherwise: bb6];
+        StorageDead(_26);
+        switchInt(move _28) -> [0: bb5, otherwise: bb6];
     }
 
     bb5: {
-        _30 = const false;
+        StorageDead(_23);
+        StorageDead(_39);
+        StorageDead(_38);
+        _0 = const false;
         goto -> bb7;
     }
 
     bb6: {
-        StorageLive(_36);
-        StorageLive(_43);
-        StorageLive(_44);
-        StorageLive(_31);
-        _31 = _10;
-        _32 = deref_copy _6;
-        _33 = deref_copy _31;
-        StorageLive(_34);
-        _34 = (*_32);
-        StorageLive(_35);
-        _35 = (*_33);
-        _36 = Le(move _34, move _35);
-        StorageDead(_35);
-        StorageDead(_34);
-        StorageDead(_31);
-        StorageDead(_44);
-        StorageDead(_43);
-        _30 = move _36;
+        StorageDead(_23);
+        StorageDead(_39);
+        StorageDead(_38);
+        StorageLive(_40);
+        StorageLive(_41);
+        StorageLive(_29);
+        _29 = _10;
+        _30 = deref_copy _6;
+        _31 = deref_copy _29;
+        StorageLive(_32);
+        _32 = (*_30);
+        StorageLive(_33);
+        _33 = (*_31);
+        _0 = Le(move _32, move _33);
+        StorageDead(_33);
+        StorageDead(_32);
+        StorageDead(_29);
+        StorageDead(_41);
+        StorageDead(_40);
         goto -> bb7;
     }
 
     bb7: {
-        StorageDead(_36);
-        StorageDead(_29);
-        _0 = move _30;
+        StorageDead(_28);
         goto -> bb9;
     }
 
     bb8: {
+        StorageDead(_17);
+        StorageDead(_37);
+        StorageDead(_36);
         _0 = const true;
         goto -> bb9;
     }
 
     bb9: {
-        StorageDead(_30);
-        StorageDead(_17);
+        StorageDead(_22);
+        StorageDead(_16);
         StorageDead(_10);
         StorageDead(_8);
         StorageDead(_6);
diff --git a/tests/mir-opt/pre-codegen/slice_filter.variant_b-{closure#0}.PreCodegen.after.mir b/tests/mir-opt/pre-codegen/slice_filter.variant_b-{closure#0}.PreCodegen.after.mir
index bab9f0b58aa..7e70c6290a8 100644
--- a/tests/mir-opt/pre-codegen/slice_filter.variant_b-{closure#0}.PreCodegen.after.mir
+++ b/tests/mir-opt/pre-codegen/slice_filter.variant_b-{closure#0}.PreCodegen.after.mir
@@ -13,9 +13,6 @@ fn variant_b::{closure#0}(_1: &mut [closure@$DIR/slice_filter.rs:11:25: 11:41],
     let mut _11: bool;
     let mut _12: bool;
     let mut _13: bool;
-    let mut _14: bool;
-    let mut _15: bool;
-    let mut _16: bool;
     scope 1 {
         debug a => _4;
         debug b => _6;
@@ -32,64 +29,46 @@ fn variant_b::{closure#0}(_1: &mut [closure@$DIR/slice_filter.rs:11:25: 11:41],
         _8 = ((*_7).2: usize);
         _9 = deref_copy (*_2);
         _10 = ((*_9).3: usize);
-        StorageLive(_12);
         StorageLive(_11);
         _11 = Le(_4, _8);
-        switchInt(move _11) -> [0: bb1, otherwise: bb2];
+        switchInt(move _11) -> [0: bb2, otherwise: bb1];
     }
 
     bb1: {
-        _12 = const false;
-        goto -> bb3;
+        StorageLive(_12);
+        _12 = Le(_10, _6);
+        switchInt(move _12) -> [0: bb2, otherwise: bb6];
     }
 
     bb2: {
         StorageLive(_13);
-        _13 = Le(_10, _6);
-        _12 = move _13;
-        goto -> bb3;
+        _13 = Le(_8, _4);
+        switchInt(move _13) -> [0: bb3, otherwise: bb4];
     }
 
     bb3: {
-        StorageDead(_13);
-        StorageDead(_11);
-        switchInt(move _12) -> [0: bb4, otherwise: bb8];
+        _0 = const false;
+        goto -> bb5;
     }
 
     bb4: {
-        StorageLive(_15);
-        StorageLive(_14);
-        _14 = Le(_8, _4);
-        switchInt(move _14) -> [0: bb5, otherwise: bb6];
+        _0 = Le(_6, _10);
+        goto -> bb5;
     }
 
     bb5: {
-        _15 = const false;
+        StorageDead(_13);
         goto -> bb7;
     }
 
     bb6: {
-        StorageLive(_16);
-        _16 = Le(_6, _10);
-        _15 = move _16;
+        _0 = const true;
         goto -> bb7;
     }
 
     bb7: {
-        StorageDead(_16);
-        StorageDead(_14);
-        _0 = move _15;
-        goto -> bb9;
-    }
-
-    bb8: {
-        _0 = const true;
-        goto -> bb9;
-    }
-
-    bb9: {
-        StorageDead(_15);
         StorageDead(_12);
+        StorageDead(_11);
         return;
     }
 }
diff --git a/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-abort.mir b/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-abort.mir
index 07a58309ee4..8590c9d3b83 100644
--- a/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-abort.mir
+++ b/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-abort.mir
@@ -58,16 +58,17 @@ fn slice_get_mut_usize(_1: &mut [u32], _2: usize) -> Option<&mut u32> {
         StorageLive(_3);
         _3 = Len((*_1));
         _4 = Lt(_2, move _3);
-        StorageDead(_3);
         switchInt(move _4) -> [0: bb1, otherwise: bb2];
     }
 
     bb1: {
+        StorageDead(_3);
         _0 = const Option::<&mut u32>::None;
         goto -> bb3;
     }
 
     bb2: {
+        StorageDead(_3);
         StorageLive(_8);
         StorageLive(_5);
         _5 = &raw mut (*_1);
diff --git a/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-unwind.mir b/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-unwind.mir
index 07a58309ee4..8590c9d3b83 100644
--- a/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-unwind.mir
+++ b/tests/mir-opt/pre-codegen/slice_index.slice_get_mut_usize.PreCodegen.after.panic-unwind.mir
@@ -58,16 +58,17 @@ fn slice_get_mut_usize(_1: &mut [u32], _2: usize) -> Option<&mut u32> {
         StorageLive(_3);
         _3 = Len((*_1));
         _4 = Lt(_2, move _3);
-        StorageDead(_3);
         switchInt(move _4) -> [0: bb1, otherwise: bb2];
     }
 
     bb1: {
+        StorageDead(_3);
         _0 = const Option::<&mut u32>::None;
         goto -> bb3;
     }
 
     bb2: {
+        StorageDead(_3);
         StorageLive(_8);
         StorageLive(_5);
         _5 = &raw mut (*_1);
diff --git a/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-abort.mir b/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-abort.mir
index 2f5d356a26d..2fd669aeeb6 100644
--- a/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-abort.mir
+++ b/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-abort.mir
@@ -8,46 +8,63 @@ fn slice_get_unchecked_mut_range(_1: &mut [u32], _2: std::ops::Range<usize>) ->
     let mut _4: usize;
     scope 1 (inlined core::slice::<impl [u32]>::get_unchecked_mut::<std::ops::Range<usize>>) {
         debug self => _1;
-        debug index => std::ops::Range<usize>{ .0 => _3, .1 => _4, };
+        debug ((index: std::ops::Range<usize>).0: usize) => _3;
+        debug ((index: std::ops::Range<usize>).1: usize) => _4;
         let mut _5: *mut [u32];
         let mut _13: *mut [u32];
         scope 2 {
             scope 3 (inlined <std::ops::Range<usize> as SliceIndex<[u32]>>::get_unchecked_mut) {
-                debug self => std::ops::Range<usize>{ .0 => _3, .1 => _4, };
+                debug ((self: std::ops::Range<usize>).0: usize) => _3;
+                debug ((self: std::ops::Range<usize>).1: usize) => _4;
                 debug slice => _5;
                 let mut _7: *mut u32;
                 let mut _8: *mut u32;
-                let _14: usize;
                 let _15: usize;
+                let _16: usize;
                 scope 4 {
-                    debug this => std::ops::Range<usize>{ .0 => _14, .1 => _15, };
+                    debug ((this: std::ops::Range<usize>).0: usize) => _15;
+                    debug ((this: std::ops::Range<usize>).1: usize) => _16;
                     scope 5 {
                         let _6: usize;
                         scope 6 {
                             debug new_len => _6;
-                            scope 7 (inlined ptr::mut_ptr::<impl *mut [u32]>::as_mut_ptr) {
+                            scope 11 (inlined ptr::mut_ptr::<impl *mut [u32]>::as_mut_ptr) {
                                 debug self => _5;
                             }
-                            scope 8 (inlined ptr::mut_ptr::<impl *mut u32>::add) {
+                            scope 12 (inlined ptr::mut_ptr::<impl *mut u32>::add) {
                                 debug self => _7;
                                 debug count => _3;
-                                scope 9 {
+                                scope 13 {
                                 }
                             }
-                            scope 10 (inlined slice_from_raw_parts_mut::<u32>) {
+                            scope 14 (inlined slice_from_raw_parts_mut::<u32>) {
                                 debug data => _8;
                                 debug len => _6;
                                 let mut _9: *mut ();
-                                scope 11 (inlined ptr::mut_ptr::<impl *mut u32>::cast::<()>) {
+                                scope 15 (inlined ptr::mut_ptr::<impl *mut u32>::cast::<()>) {
                                     debug self => _8;
                                 }
-                                scope 12 (inlined std::ptr::from_raw_parts_mut::<[u32]>) {
+                                scope 16 (inlined std::ptr::from_raw_parts_mut::<[u32]>) {
                                     debug data_address => _9;
                                     debug metadata => _6;
                                     let mut _10: *const ();
                                     let mut _11: std::ptr::metadata::PtrComponents<[u32]>;
                                     let mut _12: std::ptr::metadata::PtrRepr<[u32]>;
-                                    scope 13 {
+                                    scope 17 {
+                                    }
+                                }
+                            }
+                        }
+                        scope 7 (inlined <std::ops::Range<usize> as SliceIndex<[T]>>::get_unchecked_mut::runtime::<u32>) {
+                            debug ((this: std::ops::Range<usize>).0: usize) => _15;
+                            debug ((this: std::ops::Range<usize>).1: usize) => _16;
+                            debug slice => _5;
+                            scope 8 (inlined ptr::mut_ptr::<impl *mut [u32]>::len) {
+                                debug self => _5;
+                                let mut _14: *const [u32];
+                                scope 9 (inlined std::ptr::metadata::<[u32]>) {
+                                    debug ptr => _14;
+                                    scope 10 {
                                     }
                                 }
                             }
@@ -63,9 +80,10 @@ fn slice_get_unchecked_mut_range(_1: &mut [u32], _2: std::ops::Range<usize>) ->
         _4 = move (_2.1: usize);
         StorageLive(_5);
         _5 = &raw mut (*_1);
+        StorageLive(_6);
         StorageLive(_14);
         StorageLive(_15);
-        StorageLive(_6);
+        StorageLive(_16);
         _6 = SubUnchecked(_4, _3);
         StorageLive(_8);
         StorageLive(_7);
@@ -86,9 +104,10 @@ fn slice_get_unchecked_mut_range(_1: &mut [u32], _2: std::ops::Range<usize>) ->
         StorageDead(_12);
         StorageDead(_9);
         StorageDead(_8);
-        StorageDead(_6);
-        StorageDead(_14);
+        StorageDead(_16);
         StorageDead(_15);
+        StorageDead(_14);
+        StorageDead(_6);
         StorageDead(_5);
         _0 = &mut (*_13);
         return;
diff --git a/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-unwind.mir b/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-unwind.mir
index 2f5d356a26d..2fd669aeeb6 100644
--- a/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-unwind.mir
+++ b/tests/mir-opt/pre-codegen/slice_index.slice_get_unchecked_mut_range.PreCodegen.after.panic-unwind.mir
@@ -8,46 +8,63 @@ fn slice_get_unchecked_mut_range(_1: &mut [u32], _2: std::ops::Range<usize>) ->
     let mut _4: usize;
     scope 1 (inlined core::slice::<impl [u32]>::get_unchecked_mut::<std::ops::Range<usize>>) {
         debug self => _1;
-        debug index => std::ops::Range<usize>{ .0 => _3, .1 => _4, };
+        debug ((index: std::ops::Range<usize>).0: usize) => _3;
+        debug ((index: std::ops::Range<usize>).1: usize) => _4;
         let mut _5: *mut [u32];
         let mut _13: *mut [u32];
         scope 2 {
             scope 3 (inlined <std::ops::Range<usize> as SliceIndex<[u32]>>::get_unchecked_mut) {
-                debug self => std::ops::Range<usize>{ .0 => _3, .1 => _4, };
+                debug ((self: std::ops::Range<usize>).0: usize) => _3;
+                debug ((self: std::ops::Range<usize>).1: usize) => _4;
                 debug slice => _5;
                 let mut _7: *mut u32;
                 let mut _8: *mut u32;
-                let _14: usize;
                 let _15: usize;
+                let _16: usize;
                 scope 4 {
-                    debug this => std::ops::Range<usize>{ .0 => _14, .1 => _15, };
+                    debug ((this: std::ops::Range<usize>).0: usize) => _15;
+                    debug ((this: std::ops::Range<usize>).1: usize) => _16;
                     scope 5 {
                         let _6: usize;
                         scope 6 {
                             debug new_len => _6;
-                            scope 7 (inlined ptr::mut_ptr::<impl *mut [u32]>::as_mut_ptr) {
+                            scope 11 (inlined ptr::mut_ptr::<impl *mut [u32]>::as_mut_ptr) {
                                 debug self => _5;
                             }
-                            scope 8 (inlined ptr::mut_ptr::<impl *mut u32>::add) {
+                            scope 12 (inlined ptr::mut_ptr::<impl *mut u32>::add) {
                                 debug self => _7;
                                 debug count => _3;
-                                scope 9 {
+                                scope 13 {
                                 }
                             }
-                            scope 10 (inlined slice_from_raw_parts_mut::<u32>) {
+                            scope 14 (inlined slice_from_raw_parts_mut::<u32>) {
                                 debug data => _8;
                                 debug len => _6;
                                 let mut _9: *mut ();
-                                scope 11 (inlined ptr::mut_ptr::<impl *mut u32>::cast::<()>) {
+                                scope 15 (inlined ptr::mut_ptr::<impl *mut u32>::cast::<()>) {
                                     debug self => _8;
                                 }
-                                scope 12 (inlined std::ptr::from_raw_parts_mut::<[u32]>) {
+                                scope 16 (inlined std::ptr::from_raw_parts_mut::<[u32]>) {
                                     debug data_address => _9;
                                     debug metadata => _6;
                                     let mut _10: *const ();
                                     let mut _11: std::ptr::metadata::PtrComponents<[u32]>;
                                     let mut _12: std::ptr::metadata::PtrRepr<[u32]>;
-                                    scope 13 {
+                                    scope 17 {
+                                    }
+                                }
+                            }
+                        }
+                        scope 7 (inlined <std::ops::Range<usize> as SliceIndex<[T]>>::get_unchecked_mut::runtime::<u32>) {
+                            debug ((this: std::ops::Range<usize>).0: usize) => _15;
+                            debug ((this: std::ops::Range<usize>).1: usize) => _16;
+                            debug slice => _5;
+                            scope 8 (inlined ptr::mut_ptr::<impl *mut [u32]>::len) {
+                                debug self => _5;
+                                let mut _14: *const [u32];
+                                scope 9 (inlined std::ptr::metadata::<[u32]>) {
+                                    debug ptr => _14;
+                                    scope 10 {
                                     }
                                 }
                             }
@@ -63,9 +80,10 @@ fn slice_get_unchecked_mut_range(_1: &mut [u32], _2: std::ops::Range<usize>) ->
         _4 = move (_2.1: usize);
         StorageLive(_5);
         _5 = &raw mut (*_1);
+        StorageLive(_6);
         StorageLive(_14);
         StorageLive(_15);
-        StorageLive(_6);
+        StorageLive(_16);
         _6 = SubUnchecked(_4, _3);
         StorageLive(_8);
         StorageLive(_7);
@@ -86,9 +104,10 @@ fn slice_get_unchecked_mut_range(_1: &mut [u32], _2: std::ops::Range<usize>) ->
         StorageDead(_12);
         StorageDead(_9);
         StorageDead(_8);
-        StorageDead(_6);
-        StorageDead(_14);
+        StorageDead(_16);
         StorageDead(_15);
+        StorageDead(_14);
+        StorageDead(_6);
         StorageDead(_5);
         _0 = &mut (*_13);
         return;
diff --git a/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-abort.mir b/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-abort.mir
index 4edf4b4fb44..4afe2eda188 100644
--- a/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-abort.mir
+++ b/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-abort.mir
@@ -75,17 +75,19 @@ fn range_loop(_1: &[T], _2: impl Fn(usize, &T)) -> () {
         _8 = Lt(move _6, move _7);
         StorageDead(_7);
         StorageDead(_6);
-        StorageDead(_22);
-        StorageDead(_21);
         switchInt(move _8) -> [0: bb2, otherwise: bb3];
     }
 
     bb2: {
+        StorageDead(_22);
+        StorageDead(_21);
         _9 = Option::<usize>::None;
         goto -> bb5;
     }
 
     bb3: {
+        StorageDead(_22);
+        StorageDead(_21);
         _10 = (_5.0: usize);
         StorageLive(_11);
         _11 = <usize as Step>::forward_unchecked(_10, const 1_usize) -> [return: bb4, unwind unreachable];
diff --git a/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-unwind.mir b/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-unwind.mir
index 8bd072fd625..48092608d9c 100644
--- a/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-unwind.mir
+++ b/tests/mir-opt/pre-codegen/slice_iter.range_loop.PreCodegen.after.panic-unwind.mir
@@ -75,17 +75,19 @@ fn range_loop(_1: &[T], _2: impl Fn(usize, &T)) -> () {
         _8 = Lt(move _6, move _7);
         StorageDead(_7);
         StorageDead(_6);
-        StorageDead(_22);
-        StorageDead(_21);
         switchInt(move _8) -> [0: bb2, otherwise: bb3];
     }
 
     bb2: {
+        StorageDead(_22);
+        StorageDead(_21);
         _9 = Option::<usize>::None;
         goto -> bb5;
     }
 
     bb3: {
+        StorageDead(_22);
+        StorageDead(_21);
         _10 = (_5.0: usize);
         StorageLive(_11);
         _11 = <usize as Step>::forward_unchecked(_10, const 1_usize) -> [return: bb4, unwind: bb12];
diff --git a/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-abort.mir b/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-abort.mir
index 70efdbf4b34..566b6af95ba 100644
--- a/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-abort.mir
+++ b/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-abort.mir
@@ -19,17 +19,16 @@ fn array_casts() -> () {
     let mut _18: &usize;
     let _19: usize;
     let mut _22: bool;
-    let mut _23: bool;
+    let mut _23: usize;
     let mut _24: usize;
-    let mut _25: usize;
-    let mut _26: !;
-    let _28: !;
-    let mut _29: core::panicking::AssertKind;
-    let mut _30: &usize;
-    let _31: &usize;
-    let mut _32: &usize;
-    let _33: &usize;
-    let mut _34: std::option::Option<std::fmt::Arguments<'_>>;
+    let mut _25: !;
+    let _27: !;
+    let mut _28: core::panicking::AssertKind;
+    let mut _29: &usize;
+    let _30: &usize;
+    let mut _31: &usize;
+    let _32: &usize;
+    let mut _33: std::option::Option<std::fmt::Arguments<'_>>;
     scope 1 {
         debug x => _1;
         let _2: *mut usize;
@@ -45,15 +44,15 @@ fn array_casts() -> () {
                     debug p => _9;
                     let _20: &usize;
                     let _21: &usize;
-                    let mut _35: &usize;
+                    let mut _34: &usize;
                     scope 6 {
                     }
                     scope 7 {
                         debug left_val => _20;
                         debug right_val => _21;
-                        let _27: core::panicking::AssertKind;
+                        let _26: core::panicking::AssertKind;
                         scope 8 {
-                            debug kind => _27;
+                            debug kind => _26;
                         }
                     }
                 }
@@ -110,9 +109,9 @@ fn array_casts() -> () {
         _15 = (*_16);
         _14 = &_15;
         StorageLive(_18);
-        _35 = const _;
-        Retag(_35);
-        _18 = &(*_35);
+        _34 = const _;
+        Retag(_34);
+        _18 = &(*_34);
         _13 = (move _14, move _18);
         Retag(_13);
         StorageDead(_18);
@@ -125,39 +124,16 @@ fn array_casts() -> () {
         Retag(_21);
         StorageLive(_22);
         StorageLive(_23);
+        _23 = (*_20);
         StorageLive(_24);
-        _24 = (*_20);
-        StorageLive(_25);
-        _25 = (*_21);
-        _23 = Eq(move _24, move _25);
-        StorageDead(_25);
-        StorageDead(_24);
-        _22 = Not(move _23);
-        StorageDead(_23);
+        _24 = (*_21);
+        _22 = Eq(move _23, move _24);
         switchInt(move _22) -> [0: bb4, otherwise: bb3];
     }
 
     bb3: {
-        StorageLive(_27);
-        _27 = core::panicking::AssertKind::Eq;
-        StorageLive(_28);
-        StorageLive(_29);
-        _29 = move _27;
-        StorageLive(_30);
-        StorageLive(_31);
-        _31 = &(*_20);
-        _30 = &(*_31);
-        StorageLive(_32);
-        StorageLive(_33);
-        _33 = &(*_21);
-        _32 = &(*_33);
-        StorageLive(_34);
-        _34 = Option::<Arguments<'_>>::None;
-        Retag(_34);
-        _28 = core::panicking::assert_failed::<usize, usize>(move _29, move _30, move _32, move _34) -> unwind unreachable;
-    }
-
-    bb4: {
+        StorageDead(_24);
+        StorageDead(_23);
         _12 = const ();
         StorageDead(_22);
         StorageDead(_21);
@@ -173,4 +149,26 @@ fn array_casts() -> () {
         StorageDead(_1);
         return;
     }
+
+    bb4: {
+        StorageDead(_24);
+        StorageDead(_23);
+        StorageLive(_26);
+        _26 = core::panicking::AssertKind::Eq;
+        StorageLive(_27);
+        StorageLive(_28);
+        _28 = move _26;
+        StorageLive(_29);
+        StorageLive(_30);
+        _30 = &(*_20);
+        _29 = &(*_30);
+        StorageLive(_31);
+        StorageLive(_32);
+        _32 = &(*_21);
+        _31 = &(*_32);
+        StorageLive(_33);
+        _33 = Option::<Arguments<'_>>::None;
+        Retag(_33);
+        _27 = core::panicking::assert_failed::<usize, usize>(move _28, move _29, move _31, move _33) -> unwind unreachable;
+    }
 }
diff --git a/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-unwind.mir b/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-unwind.mir
index cfa9628d498..d0d3176320b 100644
--- a/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-unwind.mir
+++ b/tests/mir-opt/retag.array_casts.SimplifyCfg-elaborate-drops.after.panic-unwind.mir
@@ -19,17 +19,16 @@ fn array_casts() -> () {
     let mut _18: &usize;
     let _19: usize;
     let mut _22: bool;
-    let mut _23: bool;
+    let mut _23: usize;
     let mut _24: usize;
-    let mut _25: usize;
-    let mut _26: !;
-    let _28: !;
-    let mut _29: core::panicking::AssertKind;
-    let mut _30: &usize;
-    let _31: &usize;
-    let mut _32: &usize;
-    let _33: &usize;
-    let mut _34: std::option::Option<std::fmt::Arguments<'_>>;
+    let mut _25: !;
+    let _27: !;
+    let mut _28: core::panicking::AssertKind;
+    let mut _29: &usize;
+    let _30: &usize;
+    let mut _31: &usize;
+    let _32: &usize;
+    let mut _33: std::option::Option<std::fmt::Arguments<'_>>;
     scope 1 {
         debug x => _1;
         let _2: *mut usize;
@@ -45,15 +44,15 @@ fn array_casts() -> () {
                     debug p => _9;
                     let _20: &usize;
                     let _21: &usize;
-                    let mut _35: &usize;
+                    let mut _34: &usize;
                     scope 6 {
                     }
                     scope 7 {
                         debug left_val => _20;
                         debug right_val => _21;
-                        let _27: core::panicking::AssertKind;
+                        let _26: core::panicking::AssertKind;
                         scope 8 {
-                            debug kind => _27;
+                            debug kind => _26;
                         }
                     }
                 }
@@ -110,9 +109,9 @@ fn array_casts() -> () {
         _15 = (*_16);
         _14 = &_15;
         StorageLive(_18);
-        _35 = const _;
-        Retag(_35);
-        _18 = &(*_35);
+        _34 = const _;
+        Retag(_34);
+        _18 = &(*_34);
         _13 = (move _14, move _18);
         Retag(_13);
         StorageDead(_18);
@@ -125,39 +124,16 @@ fn array_casts() -> () {
         Retag(_21);
         StorageLive(_22);
         StorageLive(_23);
+        _23 = (*_20);
         StorageLive(_24);
-        _24 = (*_20);
-        StorageLive(_25);
-        _25 = (*_21);
-        _23 = Eq(move _24, move _25);
-        StorageDead(_25);
-        StorageDead(_24);
-        _22 = Not(move _23);
-        StorageDead(_23);
+        _24 = (*_21);
+        _22 = Eq(move _23, move _24);
         switchInt(move _22) -> [0: bb4, otherwise: bb3];
     }
 
     bb3: {
-        StorageLive(_27);
-        _27 = core::panicking::AssertKind::Eq;
-        StorageLive(_28);
-        StorageLive(_29);
-        _29 = move _27;
-        StorageLive(_30);
-        StorageLive(_31);
-        _31 = &(*_20);
-        _30 = &(*_31);
-        StorageLive(_32);
-        StorageLive(_33);
-        _33 = &(*_21);
-        _32 = &(*_33);
-        StorageLive(_34);
-        _34 = Option::<Arguments<'_>>::None;
-        Retag(_34);
-        _28 = core::panicking::assert_failed::<usize, usize>(move _29, move _30, move _32, move _34) -> unwind continue;
-    }
-
-    bb4: {
+        StorageDead(_24);
+        StorageDead(_23);
         _12 = const ();
         StorageDead(_22);
         StorageDead(_21);
@@ -173,4 +149,26 @@ fn array_casts() -> () {
         StorageDead(_1);
         return;
     }
+
+    bb4: {
+        StorageDead(_24);
+        StorageDead(_23);
+        StorageLive(_26);
+        _26 = core::panicking::AssertKind::Eq;
+        StorageLive(_27);
+        StorageLive(_28);
+        _28 = move _26;
+        StorageLive(_29);
+        StorageLive(_30);
+        _30 = &(*_20);
+        _29 = &(*_30);
+        StorageLive(_31);
+        StorageLive(_32);
+        _32 = &(*_21);
+        _31 = &(*_32);
+        StorageLive(_33);
+        _33 = Option::<Arguments<'_>>::None;
+        Retag(_33);
+        _27 = core::panicking::assert_failed::<usize, usize>(move _28, move _29, move _31, move _33) -> unwind continue;
+    }
 }
diff --git a/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff
index bb14b909a95..b020d1baafa 100644
--- a/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa/lifetimes.foo.ScalarReplacementOfAggregates.diff
@@ -33,7 +33,8 @@
 +     let _32: u32;
       scope 1 {
 -         debug foo => _1;
-+         debug foo => Foo<T>{ .0 => _31, .1 => _32, };
++         debug ((foo: Foo<T>).0: std::result::Result<std::boxed::Box<dyn std::fmt::Display>, <T as Err>::Err>) => _31;
++         debug ((foo: Foo<T>).1: u32) => _32;
           let _5: std::result::Result<std::boxed::Box<dyn std::fmt::Display>, <T as Err>::Err>;
           scope 2 {
               debug x => _5;
diff --git a/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff
index 7ee0431692c..1330f9b3ac8 100644
--- a/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa/structs.constant.ScalarReplacementOfAggregates.diff
@@ -8,7 +8,8 @@
 +     let _5: u8;
       scope 1 {
 -         debug y => _1;
-+         debug y => (usize, u8){ .0 => _4, .1 => _5, };
++         debug ((y: (usize, u8)).0: usize) => _4;
++         debug ((y: (usize, u8)).1: u8) => _5;
           let _2: usize;
           scope 2 {
               debug t => _2;
diff --git a/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff
index 0a1de891aee..3621338635e 100644
--- a/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa/structs.copies.ScalarReplacementOfAggregates.diff
@@ -11,7 +11,10 @@
 +     let _14: std::option::Option<isize>;
       scope 1 {
 -         debug y => _2;
-+         debug y => Foo{ .0 => _11, .1 => _12, .2 => _13, .3 => _14, };
++         debug ((y: Foo).0: u8) => _11;
++         debug ((y: Foo).1: ()) => _12;
++         debug ((y: Foo).2: &str) => _13;
++         debug ((y: Foo).3: std::option::Option<isize>) => _14;
           let _3: u8;
           scope 2 {
               debug t => _3;
@@ -25,7 +28,10 @@
 +                 let _10: std::option::Option<isize>;
                   scope 4 {
 -                     debug z => _5;
-+                     debug z => Foo{ .0 => _7, .1 => _8, .2 => _9, .3 => _10, };
++                     debug ((z: Foo).0: u8) => _7;
++                     debug ((z: Foo).1: ()) => _8;
++                     debug ((z: Foo).2: &str) => _9;
++                     debug ((z: Foo).3: std::option::Option<isize>) => _10;
                       let _6: ();
                       scope 5 {
                           debug a => _6;
diff --git a/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff b/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff
index d7c57c293c4..304bf2fb1a7 100644
--- a/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff
+++ b/tests/mir-opt/sroa/structs.ref_copies.ScalarReplacementOfAggregates.diff
@@ -11,7 +11,10 @@
 +     let _8: std::option::Option<isize>;
       scope 1 {
 -         debug y => _2;
-+         debug y => Foo{ .0 => _5, .1 => _6, .2 => _7, .3 => _8, };
++         debug ((y: Foo).0: u8) => _5;
++         debug ((y: Foo).1: ()) => _6;
++         debug ((y: Foo).2: &str) => _7;
++         debug ((y: Foo).3: std::option::Option<isize>) => _8;
           let _3: u8;
           scope 2 {
               debug t => _3;
diff --git a/tests/pretty/tests-are-sorted.pp b/tests/pretty/tests-are-sorted.pp
index 7d7f682130d..fd9386be8f3 100644
--- a/tests/pretty/tests-are-sorted.pp
+++ b/tests/pretty/tests-are-sorted.pp
@@ -79,7 +79,7 @@ pub const a_test: test::TestDescAndFn =
     };
 fn a_test() {}
 #[rustc_main]
-#[no_coverage]
+#[coverage(off)]
 pub fn main() -> () {
     extern crate test;
     test::test_main_static(&[&a_test, &m_test, &z_test])
diff --git a/tests/run-coverage/closure_macro.coverage b/tests/run-coverage/closure_macro.coverage
index 1bfd2013da8..0f2c917e090 100644
--- a/tests/run-coverage/closure_macro.coverage
+++ b/tests/run-coverage/closure_macro.coverage
@@ -1,5 +1,5 @@
    LL|       |// compile-flags: --edition=2018
-   LL|       |#![feature(no_coverage)]
+   LL|       |#![feature(coverage_attribute)]
    LL|       |
    LL|       |macro_rules! bail {
    LL|       |    ($msg:literal $(,)?) => {
diff --git a/tests/run-coverage/closure_macro.rs b/tests/run-coverage/closure_macro.rs
index 5e3b00d1ef5..9b289141c2e 100644
--- a/tests/run-coverage/closure_macro.rs
+++ b/tests/run-coverage/closure_macro.rs
@@ -1,5 +1,5 @@
 // compile-flags: --edition=2018
-#![feature(no_coverage)]
+#![feature(coverage_attribute)]
 
 macro_rules! bail {
     ($msg:literal $(,)?) => {
diff --git a/tests/run-coverage/closure_macro_async.coverage b/tests/run-coverage/closure_macro_async.coverage
index 018e3160e4f..74247f1bc6f 100644
--- a/tests/run-coverage/closure_macro_async.coverage
+++ b/tests/run-coverage/closure_macro_async.coverage
@@ -1,5 +1,5 @@
    LL|       |// compile-flags: --edition=2018
-   LL|       |#![feature(no_coverage)]
+   LL|       |#![feature(coverage_attribute)]
    LL|       |
    LL|       |macro_rules! bail {
    LL|       |    ($msg:literal $(,)?) => {
@@ -40,7 +40,7 @@
    LL|      1|    Ok(())
    LL|      1|}
    LL|       |
-   LL|       |#[no_coverage]
+   LL|       |#[coverage(off)]
    LL|       |fn main() {
    LL|       |    executor::block_on(test()).unwrap();
    LL|       |}
@@ -52,18 +52,18 @@
    LL|       |        task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
    LL|       |    };
    LL|       |
-   LL|       |    #[no_coverage]
+   LL|       |    #[coverage(off)]
    LL|       |    pub fn block_on<F: Future>(mut future: F) -> F::Output {
    LL|       |        let mut future = unsafe { Pin::new_unchecked(&mut future) };
    LL|       |        use std::hint::unreachable_unchecked;
    LL|       |        static VTABLE: RawWakerVTable = RawWakerVTable::new(
-   LL|       |            #[no_coverage]
+   LL|       |            #[coverage(off)]
    LL|       |            |_| unsafe { unreachable_unchecked() }, // clone
-   LL|       |            #[no_coverage]
+   LL|       |            #[coverage(off)]
    LL|       |            |_| unsafe { unreachable_unchecked() }, // wake
-   LL|       |            #[no_coverage]
+   LL|       |            #[coverage(off)]
    LL|       |            |_| unsafe { unreachable_unchecked() }, // wake_by_ref
-   LL|       |            #[no_coverage]
+   LL|       |            #[coverage(off)]
    LL|       |            |_| (),
    LL|       |        );
    LL|       |        let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
diff --git a/tests/run-coverage/closure_macro_async.rs b/tests/run-coverage/closure_macro_async.rs
index 3d6bdb38a2a..b4275599e59 100644
--- a/tests/run-coverage/closure_macro_async.rs
+++ b/tests/run-coverage/closure_macro_async.rs
@@ -1,5 +1,5 @@
 // compile-flags: --edition=2018
-#![feature(no_coverage)]
+#![feature(coverage_attribute)]
 
 macro_rules! bail {
     ($msg:literal $(,)?) => {
@@ -39,7 +39,7 @@ pub async fn test() -> Result<(), String> {
     Ok(())
 }
 
-#[no_coverage]
+#[coverage(off)]
 fn main() {
     executor::block_on(test()).unwrap();
 }
@@ -51,18 +51,18 @@ mod executor {
         task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
     };
 
-    #[no_coverage]
+    #[coverage(off)]
     pub fn block_on<F: Future>(mut future: F) -> F::Output {
         let mut future = unsafe { Pin::new_unchecked(&mut future) };
         use std::hint::unreachable_unchecked;
         static VTABLE: RawWakerVTable = RawWakerVTable::new(
-            #[no_coverage]
+            #[coverage(off)]
             |_| unsafe { unreachable_unchecked() }, // clone
-            #[no_coverage]
+            #[coverage(off)]
             |_| unsafe { unreachable_unchecked() }, // wake
-            #[no_coverage]
+            #[coverage(off)]
             |_| unsafe { unreachable_unchecked() }, // wake_by_ref
-            #[no_coverage]
+            #[coverage(off)]
             |_| (),
         );
         let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
diff --git a/tests/run-coverage/lazy_boolean.coverage b/tests/run-coverage/lazy_boolean.coverage
index 2d927a08356..8f14082ef68 100644
--- a/tests/run-coverage/lazy_boolean.coverage
+++ b/tests/run-coverage/lazy_boolean.coverage
@@ -32,7 +32,7 @@
                                           ^0
    LL|       |
    LL|       |    if
-   LL|      1|        !
+   LL|       |        !
    LL|      1|        is_true
    LL|      0|    {
    LL|      0|        a = 2
diff --git a/tests/run-coverage/no_cov_crate.coverage b/tests/run-coverage/no_cov_crate.coverage
index 73f6fbd0c2b..f5a0322bf3e 100644
--- a/tests/run-coverage/no_cov_crate.coverage
+++ b/tests/run-coverage/no_cov_crate.coverage
@@ -1,17 +1,17 @@
-   LL|       |// Enables `no_coverage` on the entire crate
-   LL|       |#![feature(no_coverage)]
+   LL|       |// Enables `coverage(off)` on the entire crate
+   LL|       |#![feature(coverage_attribute)]
    LL|       |
-   LL|       |#[no_coverage]
+   LL|       |#[coverage(off)]
    LL|       |fn do_not_add_coverage_1() {
    LL|       |    println!("called but not covered");
    LL|       |}
    LL|       |
    LL|       |fn do_not_add_coverage_2() {
-   LL|       |    #![no_coverage]
+   LL|       |    #![coverage(off)]
    LL|       |    println!("called but not covered");
    LL|       |}
    LL|       |
-   LL|       |#[no_coverage]
+   LL|       |#[coverage(off)]
    LL|       |#[allow(dead_code)]
    LL|       |fn do_not_add_coverage_not_called() {
    LL|       |    println!("not called and not covered");
@@ -33,7 +33,7 @@
    LL|       |// FIXME: These test-cases illustrate confusing results of nested functions.
    LL|       |// See https://github.com/rust-lang/rust/issues/93319
    LL|       |mod nested_fns {
-   LL|       |    #[no_coverage]
+   LL|       |    #[coverage(off)]
    LL|       |    pub fn outer_not_covered(is_true: bool) {
    LL|      1|        fn inner(is_true: bool) {
    LL|      1|            if is_true {
@@ -50,7 +50,7 @@
    LL|      1|        println!("called and covered");
    LL|      1|        inner_not_covered(is_true);
    LL|      1|
-   LL|      1|        #[no_coverage]
+   LL|      1|        #[coverage(off)]
    LL|      1|        fn inner_not_covered(is_true: bool) {
    LL|      1|            if is_true {
    LL|      1|                println!("called but not covered");
diff --git a/tests/run-coverage/no_cov_crate.rs b/tests/run-coverage/no_cov_crate.rs
index 5b748aeefb7..e12e4bc55e3 100644
--- a/tests/run-coverage/no_cov_crate.rs
+++ b/tests/run-coverage/no_cov_crate.rs
@@ -1,17 +1,17 @@
-// Enables `no_coverage` on the entire crate
-#![feature(no_coverage)]
+// Enables `coverage(off)` on the entire crate
+#![feature(coverage_attribute)]
 
-#[no_coverage]
+#[coverage(off)]
 fn do_not_add_coverage_1() {
     println!("called but not covered");
 }
 
 fn do_not_add_coverage_2() {
-    #![no_coverage]
+    #![coverage(off)]
     println!("called but not covered");
 }
 
-#[no_coverage]
+#[coverage(off)]
 #[allow(dead_code)]
 fn do_not_add_coverage_not_called() {
     println!("not called and not covered");
@@ -33,7 +33,7 @@ fn add_coverage_not_called() {
 // FIXME: These test-cases illustrate confusing results of nested functions.
 // See https://github.com/rust-lang/rust/issues/93319
 mod nested_fns {
-    #[no_coverage]
+    #[coverage(off)]
     pub fn outer_not_covered(is_true: bool) {
         fn inner(is_true: bool) {
             if is_true {
@@ -50,7 +50,7 @@ mod nested_fns {
         println!("called and covered");
         inner_not_covered(is_true);
 
-        #[no_coverage]
+        #[coverage(off)]
         fn inner_not_covered(is_true: bool) {
             if is_true {
                 println!("called but not covered");
diff --git a/tests/run-make-fulldeps/issue-19371/foo.rs b/tests/run-make-fulldeps/issue-19371/foo.rs
index 68132638759..1c9d33dcc8e 100644
--- a/tests/run-make-fulldeps/issue-19371/foo.rs
+++ b/tests/run-make-fulldeps/issue-19371/foo.rs
@@ -61,6 +61,7 @@ fn compile(code: String, output: PathBuf, sysroot: PathBuf) {
         override_queries: None,
         make_codegen_backend: None,
         registry: rustc_driver::diagnostics_registry(),
+        expanded_args: Default::default(),
     };
 
     interface::run_compiler(config, |compiler| {
diff --git a/tests/run-make-fulldeps/obtain-borrowck/driver.rs b/tests/run-make-fulldeps/obtain-borrowck/driver.rs
index 04c551cf4bb..b59a65a713f 100644
--- a/tests/run-make-fulldeps/obtain-borrowck/driver.rs
+++ b/tests/run-make-fulldeps/obtain-borrowck/driver.rs
@@ -27,7 +27,7 @@ use rustc_interface::{Config, Queries};
 use rustc_middle::query::queries::mir_borrowck::ProvidedValue;
 use rustc_middle::query::{ExternProviders, Providers};
 use rustc_middle::ty::TyCtxt;
-use rustc_session::{Session, EarlyErrorHandler};
+use rustc_session::Session;
 use std::cell::RefCell;
 use std::collections::HashMap;
 use std::thread_local;
@@ -58,7 +58,6 @@ impl rustc_driver::Callbacks for CompilerCalls {
     // the result.
     fn after_analysis<'tcx>(
         &mut self,
-        _handler: &EarlyErrorHandler,
         compiler: &Compiler,
         queries: &'tcx Queries<'tcx>,
     ) -> Compilation {
diff --git a/tests/run-make/compressed-debuginfo/Makefile b/tests/run-make/compressed-debuginfo/Makefile
new file mode 100644
index 00000000000..f9e4927d008
--- /dev/null
+++ b/tests/run-make/compressed-debuginfo/Makefile
@@ -0,0 +1,15 @@
+# ignore-cross-compile
+include ../tools.mk
+
+# only-linux
+# min-llvm-version: 16.0
+#
+# This tests debuginfo-compression.
+
+all: zlib zstandard
+
+zlib:
+	test "`$(RUSTC) --crate-name=foo --crate-type=lib --emit=obj -C debuginfo=full -Z debuginfo-compression=zlib foo.rs 2>&1 | sed 's/.*unknown.*zlib.*/missing/' | head -n 1`" = missing || readelf -t $(TMPDIR)/foo.o | grep -q ZLIB
+
+zstandard:
+	test "`$(RUSTC) --crate-name=foo --crate-type=lib --emit=obj -C debuginfo=full -Z debuginfo-compression=zstd foo.rs 2>&1 | sed 's/.*unknown.*zstd.*/missing/' | head -n 1`" = missing || readelf -t $(TMPDIR)/foo.o | grep -q ZST
diff --git a/tests/run-make/compressed-debuginfo/foo.rs b/tests/run-make/compressed-debuginfo/foo.rs
new file mode 100644
index 00000000000..185ce22450c
--- /dev/null
+++ b/tests/run-make/compressed-debuginfo/foo.rs
@@ -0,0 +1,3 @@
+pub fn foo() -> i32 {
+    42
+}
diff --git a/tests/run-make/emit-path-unhashed/Makefile b/tests/run-make/emit-path-unhashed/Makefile
index 74047fe5f86..611f8578140 100644
--- a/tests/run-make/emit-path-unhashed/Makefile
+++ b/tests/run-make/emit-path-unhashed/Makefile
@@ -5,10 +5,10 @@ OUT=$(TMPDIR)/emit
 # --emit KIND=PATH should not affect crate hash vs --emit KIND
 all: $(OUT)/a/libfoo.rlib $(OUT)/b/libfoo.rlib $(OUT)/c/libfoo.rlib \
 		$(TMPDIR)/libfoo.rlib
-	$(RUSTC) -Zls $(TMPDIR)/libfoo.rlib > $(TMPDIR)/base.txt
-	$(RUSTC) -Zls $(OUT)/a/libfoo.rlib > $(TMPDIR)/a.txt
-	$(RUSTC) -Zls $(OUT)/b/libfoo.rlib > $(TMPDIR)/b.txt
-	$(RUSTC) -Zls $(OUT)/c/libfoo.rlib > $(TMPDIR)/c.txt
+	$(RUSTC) -Zls=root $(TMPDIR)/libfoo.rlib > $(TMPDIR)/base.txt
+	$(RUSTC) -Zls=root $(OUT)/a/libfoo.rlib > $(TMPDIR)/a.txt
+	$(RUSTC) -Zls=root $(OUT)/b/libfoo.rlib > $(TMPDIR)/b.txt
+	$(RUSTC) -Zls=root $(OUT)/c/libfoo.rlib > $(TMPDIR)/c.txt
 
 	diff $(TMPDIR)/base.txt $(TMPDIR)/a.txt
 	diff $(TMPDIR)/base.txt $(TMPDIR)/b.txt
diff --git a/tests/run-make/issue-88756-default-output/output-default.stdout b/tests/run-make/issue-88756-default-output/output-default.stdout
index de8ff0e5f89..f5981045b03 100644
--- a/tests/run-make/issue-88756-default-output/output-default.stdout
+++ b/tests/run-make/issue-88756-default-output/output-default.stdout
@@ -100,7 +100,7 @@ Options:
                         check if given theme is valid
         --resource-suffix PATH
                         suffix to add to CSS and JavaScript files, e.g.,
-                        "light.css" will become "light-suffix.css"
+                        "search-index.js" will become "search-index-suffix.js"
         --edition EDITION
                         edition to use when compiling rust code (default:
                         2015)
diff --git a/tests/run-make/ls-metadata/Makefile b/tests/run-make/ls-metadata/Makefile
index 123dd64e15c..f03569baef7 100644
--- a/tests/run-make/ls-metadata/Makefile
+++ b/tests/run-make/ls-metadata/Makefile
@@ -3,6 +3,6 @@ include ../tools.mk
 
 all:
 	$(RUSTC) foo.rs
-	$(RUSTC) -Z ls $(TMPDIR)/foo
+	$(RUSTC) -Z ls=root $(TMPDIR)/foo
 	touch $(TMPDIR)/bar
-	$(RUSTC) -Z ls $(TMPDIR)/bar
+	$(RUSTC) -Z ls=root $(TMPDIR)/bar
diff --git a/tests/run-make/lto-linkage-used-attr/Makefile b/tests/run-make/lto-linkage-used-attr/Makefile
new file mode 100644
index 00000000000..e78b83890ed
--- /dev/null
+++ b/tests/run-make/lto-linkage-used-attr/Makefile
@@ -0,0 +1,9 @@
+include ../tools.mk
+
+# Verify that the impl_* symbols are preserved. #108030
+# only-x86_64-unknown-linux-gnu
+# min-llvm-version: 17
+
+all:
+	$(RUSTC) -Cdebuginfo=0 -Copt-level=3 lib.rs
+	$(RUSTC) -Clto=fat -Cdebuginfo=0 -Copt-level=3 main.rs
diff --git a/tests/run-make/lto-linkage-used-attr/lib.rs b/tests/run-make/lto-linkage-used-attr/lib.rs
new file mode 100644
index 00000000000..0a92ea9cd22
--- /dev/null
+++ b/tests/run-make/lto-linkage-used-attr/lib.rs
@@ -0,0 +1,50 @@
+#![crate_type = "rlib"]
+#![crate_type = "cdylib"]
+
+#[macro_export]
+macro_rules! asm_func {
+    ($name:expr, $body:expr $(, $($args:tt)*)?) => {
+        core::arch::global_asm!(
+            concat!(
+                ".p2align 4\n",
+                ".hidden ", $name, "\n",
+                ".global ", $name, "\n",
+                ".type ", $name, ",@function\n",
+                $name, ":\n",
+                $body,
+                ".size ", $name, ",.-", $name,
+            )
+            $(, $($args)*)?
+        );
+    };
+}
+
+macro_rules! libcall_trampoline {
+    ($libcall:ident ; $libcall_impl:ident) => {
+        asm_func!(
+            stringify!($libcall),
+            concat!(
+                "
+                   .cfi_startproc simple
+                   .cfi_def_cfa_offset 0
+                    jmp {}
+                    .cfi_endproc
+                ",
+            ),
+            sym $libcall_impl
+        );
+    };
+}
+
+pub mod trampolines {
+    extern "C" {
+        pub fn table_fill_funcref();
+        pub fn table_fill_externref();
+    }
+
+    unsafe extern "C" fn impl_table_fill_funcref() {}
+    unsafe extern "C" fn impl_table_fill_externref() {}
+
+    libcall_trampoline!(table_fill_funcref ; impl_table_fill_funcref);
+    libcall_trampoline!(table_fill_externref ; impl_table_fill_externref);
+}
diff --git a/tests/run-make/lto-linkage-used-attr/main.rs b/tests/run-make/lto-linkage-used-attr/main.rs
new file mode 100644
index 00000000000..256b02e5b0b
--- /dev/null
+++ b/tests/run-make/lto-linkage-used-attr/main.rs
@@ -0,0 +1,10 @@
+extern crate lib;
+
+use lib::trampolines::*;
+
+fn main() {
+    unsafe {
+        table_fill_externref();
+        table_fill_funcref();
+    }
+}
diff --git a/tests/run-make/metadata-dep-info/Makefile b/tests/run-make/metadata-dep-info/Makefile
new file mode 100644
index 00000000000..f9043f21433
--- /dev/null
+++ b/tests/run-make/metadata-dep-info/Makefile
@@ -0,0 +1,13 @@
+include ../tools.mk
+
+ifdef RUSTC_BLESS_TEST
+    RUSTC_TEST_OP = cp
+else
+    RUSTC_TEST_OP = $(DIFF)
+endif
+
+all:
+	$(RUSTC) --emit=metadata,dep-info --crate-type lib dash-separated.rs -C extra-filename=_something-extra
+	# Strip TMPDIR since it is a machine specific absolute path
+	sed "s%.*[/\\]%%" "$(TMPDIR)"/dash-separated_something-extra.d > "$(TMPDIR)"/dash-separated_something-extra.normalized.d
+	$(RUSTC_TEST_OP) "$(TMPDIR)"/dash-separated_something-extra.normalized.d dash-separated_something-extra.normalized.d
diff --git a/tests/run-make/metadata-dep-info/dash-separated.rs b/tests/run-make/metadata-dep-info/dash-separated.rs
new file mode 100644
index 00000000000..4202afd3d08
--- /dev/null
+++ b/tests/run-make/metadata-dep-info/dash-separated.rs
@@ -0,0 +1,4 @@
+//! It is important that this file has at least one `-` in the file name since
+//! we want to test that it becomes a `_` when appropriate.
+
+pub struct Foo;
diff --git a/tests/run-make/metadata-dep-info/dash-separated_something-extra.normalized.d b/tests/run-make/metadata-dep-info/dash-separated_something-extra.normalized.d
new file mode 100644
index 00000000000..497d76b4ea1
--- /dev/null
+++ b/tests/run-make/metadata-dep-info/dash-separated_something-extra.normalized.d
@@ -0,0 +1,5 @@
+libdash_separated_something-extra.rmeta: dash-separated.rs
+
+dash-separated_something-extra.d: dash-separated.rs
+
+dash-separated.rs:
diff --git a/tests/run-make/output-filename-overwrites-input/Makefile b/tests/run-make/output-filename-overwrites-input/Makefile
index 605b86b253e..fe5d231382d 100644
--- a/tests/run-make/output-filename-overwrites-input/Makefile
+++ b/tests/run-make/output-filename-overwrites-input/Makefile
@@ -8,7 +8,7 @@ all:
 	cp bar.rs $(TMPDIR)/bar.rlib
 	$(RUSTC) $(TMPDIR)/bar.rlib -o $(TMPDIR)/bar.rlib 2>&1 \
 		| $(CGREP) -e "the input file \".*bar.rlib\" would be overwritten by the generated executable"
-	$(RUSTC) foo.rs 2>&1 && $(RUSTC) -Z ls $(TMPDIR)/foo 2>&1
+	$(RUSTC) foo.rs 2>&1 && $(RUSTC) -Z ls=root $(TMPDIR)/foo 2>&1
 	cp foo.rs $(TMPDIR)/foo.rs
 	$(RUSTC) $(TMPDIR)/foo.rs -o $(TMPDIR)/foo.rs 2>&1 \
 		| $(CGREP) -e "the input file \".*foo.rs\" would be overwritten by the generated executable"
diff --git a/tests/run-make/pdb-buildinfo-cl-cmd/Makefile b/tests/run-make/pdb-buildinfo-cl-cmd/Makefile
new file mode 100644
index 00000000000..a7be301a5b0
--- /dev/null
+++ b/tests/run-make/pdb-buildinfo-cl-cmd/Makefile
@@ -0,0 +1,16 @@
+include ../tools.mk
+
+# only-windows-msvc
+
+# tests if the pdb contains the following information in the LF_BUILDINFO:
+# 1. the commandline args to compile it (cmd)
+# 2. full path to the compiler (cl)
+
+# we just do a stringsearch on the pdb, as these need to show up at least once, as the LF_BUILDINFO is created for each cgu
+# actual parsing would be better, but this is a simple and good enough solution for now
+
+all:
+	$(RUSTC_ORIGINAL) main.rs -g --crate-name my_crate_name --crate-type bin -C metadata=dc9ef878b0a48666 --out-dir $(TMPDIR)
+	cat '$(TMPDIR)/my_crate_name.pdb' | grep -F '$(RUSTC_ORIGINAL)'
+# using a file containing the string so I don't have problems with escaping quotes and spaces 
+	cat '$(TMPDIR)/my_crate_name.pdb' | grep -f 'stringlist.txt'
diff --git a/tests/run-make/pdb-buildinfo-cl-cmd/main.rs b/tests/run-make/pdb-buildinfo-cl-cmd/main.rs
new file mode 100644
index 00000000000..f79c691f085
--- /dev/null
+++ b/tests/run-make/pdb-buildinfo-cl-cmd/main.rs
@@ -0,0 +1,2 @@
+fn main() {
+}
diff --git a/tests/run-make/pdb-buildinfo-cl-cmd/stringlist.txt b/tests/run-make/pdb-buildinfo-cl-cmd/stringlist.txt
new file mode 100644
index 00000000000..634e9f19e89
--- /dev/null
+++ b/tests/run-make/pdb-buildinfo-cl-cmd/stringlist.txt
@@ -0,0 +1 @@
+"main.rs" "-g" "--crate-name" "my_crate_name" "--crate-type" "bin" "-C" "metadata=dc9ef878b0a48666" "--out-dir"
\ No newline at end of file
diff --git a/tests/run-make/pgo-branch-weights/Makefile b/tests/run-make/pgo-branch-weights/Makefile
index c60206a1f34..4c9f8b2493a 100644
--- a/tests/run-make/pgo-branch-weights/Makefile
+++ b/tests/run-make/pgo-branch-weights/Makefile
@@ -1,5 +1,6 @@
 # needs-profiler-support
 # ignore-windows-gnu
+# ignore-cross-compile
 
 # FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
 # properly. Since we only have GCC on the CI ignore the test for now.
diff --git a/tests/run-make/pgo-gen-lto/Makefile b/tests/run-make/pgo-gen-lto/Makefile
index 3f2f6a838b5..8b647846af3 100644
--- a/tests/run-make/pgo-gen-lto/Makefile
+++ b/tests/run-make/pgo-gen-lto/Makefile
@@ -1,5 +1,6 @@
 # needs-profiler-support
 # ignore-windows-gnu
+# ignore-cross-compile
 
 # FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
 # properly. Since we only have GCC on the CI ignore the test for now.
diff --git a/tests/run-make/pgo-gen/Makefile b/tests/run-make/pgo-gen/Makefile
index 4623a74957b..bf32cfdb802 100644
--- a/tests/run-make/pgo-gen/Makefile
+++ b/tests/run-make/pgo-gen/Makefile
@@ -1,5 +1,6 @@
 # needs-profiler-support
 # ignore-windows-gnu
+# ignore-cross-compile
 
 # FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
 # properly. Since we only have GCC on the CI ignore the test for now.
diff --git a/tests/run-make/pgo-indirect-call-promotion/Makefile b/tests/run-make/pgo-indirect-call-promotion/Makefile
index 45302215cc6..542eb244d39 100644
--- a/tests/run-make/pgo-indirect-call-promotion/Makefile
+++ b/tests/run-make/pgo-indirect-call-promotion/Makefile
@@ -1,5 +1,6 @@
 # needs-profiler-support
 # ignore-windows-gnu
+# ignore-cross-compile
 
 # FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
 # properly. Since we only have GCC on the CI ignore the test for now.
diff --git a/tests/run-make/pgo-use/Makefile b/tests/run-make/pgo-use/Makefile
index 3bac9b77aa3..9f440118dae 100644
--- a/tests/run-make/pgo-use/Makefile
+++ b/tests/run-make/pgo-use/Makefile
@@ -1,5 +1,6 @@
 # needs-profiler-support
 # ignore-windows-gnu
+# ignore-cross-compile
 
 # FIXME(mati865): MinGW GCC miscompiles compiler-rt profiling library but with Clang it works
 # properly. Since we only have GCC on the CI ignore the test for now.
diff --git a/tests/run-make/pointer-auth-link-with-c/Makefile b/tests/run-make/pointer-auth-link-with-c/Makefile
index dffbd303582..8fcf10e2096 100644
--- a/tests/run-make/pointer-auth-link-with-c/Makefile
+++ b/tests/run-make/pointer-auth-link-with-c/Makefile
@@ -1,6 +1,7 @@
 include ../tools.mk
 
 # only-aarch64
+# ignore-cross-compile
 
 all:
 	$(COMPILE_OBJ) $(TMPDIR)/test.o test.c
diff --git a/tests/run-make/print-cfg/Makefile b/tests/run-make/print-cfg/Makefile
index 654c303b3e2..6b153e5b54e 100644
--- a/tests/run-make/print-cfg/Makefile
+++ b/tests/run-make/print-cfg/Makefile
@@ -13,19 +13,19 @@ all: default output_to_file
 
 output_to_file:
 	# Backend-independent, printed by rustc_driver_impl/src/lib.rs
-	$(RUSTC) --target x86_64-pc-windows-gnu --print cfg=$(TMPDIR)/cfg.txt -Z unstable-options
+	$(RUSTC) --target x86_64-pc-windows-gnu --print cfg=$(TMPDIR)/cfg.txt
 	$(CGREP) windows < $(TMPDIR)/cfg.txt
 
 	# Printed from CodegenBackend trait impl in rustc_codegen_llvm/src/lib.rs
-	$(RUSTC) --print relocation-models=$(TMPDIR)/relocation-models.txt -Z unstable-options
+	$(RUSTC) --print relocation-models=$(TMPDIR)/relocation-models.txt
 	$(CGREP) dynamic-no-pic < $(TMPDIR)/relocation-models.txt
 
 	# Printed by compiler/rustc_codegen_llvm/src/llvm_util.rs
-	$(RUSTC) --target wasm32-unknown-unknown --print target-features=$(TMPDIR)/target-features.txt -Z unstable-options
+	$(RUSTC) --target wasm32-unknown-unknown --print target-features=$(TMPDIR)/target-features.txt
 	$(CGREP) reference-types < $(TMPDIR)/target-features.txt
 
 	# Printed by C++ code in rustc_llvm/llvm-wrapper/PassWrapper.cpp
-	$(RUSTC) --target wasm32-unknown-unknown --print target-cpus=$(TMPDIR)/target-cpus.txt -Z unstable-options
+	$(RUSTC) --target wasm32-unknown-unknown --print target-cpus=$(TMPDIR)/target-cpus.txt
 	$(CGREP) generic < $(TMPDIR)/target-cpus.txt
 
 ifdef IS_WINDOWS
diff --git a/tests/run-make/profile/Makefile b/tests/run-make/profile/Makefile
index fffc051adbf..7919b18ba74 100644
--- a/tests/run-make/profile/Makefile
+++ b/tests/run-make/profile/Makefile
@@ -1,4 +1,5 @@
 # needs-profiler-support
+# ignore-cross-compile
 
 include ../tools.mk
 
diff --git a/tests/run-make/rustdoc-themes/Makefile b/tests/run-make/rustdoc-themes/Makefile
index a6d9a43addf..a4980eb0b3e 100644
--- a/tests/run-make/rustdoc-themes/Makefile
+++ b/tests/run-make/rustdoc-themes/Makefile
@@ -5,6 +5,7 @@ include ../tools.mk
 OUTPUT_DIR := "$(TMPDIR)/rustdoc-themes"
 
 all:
-	cp $(S)/src/librustdoc/html/static/css/themes/light.css $(TMPDIR)/test.css
+	awk '/Begin theme: light/ {in_theme=1;next} /End theme:/ {in_theme=0} { if (in_theme) print }' \
+		< '$(S)/src/librustdoc/html/static/css/noscript.css' > '$(TMPDIR)/test.css'
 	$(RUSTDOC) -o $(OUTPUT_DIR) foo.rs --theme $(TMPDIR)/test.css
 	$(HTMLDOCCK) $(OUTPUT_DIR) foo.rs
diff --git a/tests/rustdoc-gui/code-color.goml b/tests/rustdoc-gui/code-color.goml
index 833fa05db42..92bdfb25b00 100644
--- a/tests/rustdoc-gui/code-color.goml
+++ b/tests/rustdoc-gui/code-color.goml
@@ -19,6 +19,18 @@ define-function: (
     },
 )
 
-call-function: ("check-colors", ("ayu", "rgb(230, 225, 207)", "rgb(255, 180, 84)"))
-call-function: ("check-colors", ("dark", "rgb(221, 221, 221)", "rgb(221, 221, 221)"))
-call-function: ("check-colors", ("light", "rgb(0, 0, 0)", "rgb(0, 0, 0)"))
+call-function: ("check-colors", {
+    "theme": "ayu",
+    "doc_code_color": "#e6e1cf",
+    "doc_inline_code_color": "#ffb454",
+})
+call-function: ("check-colors", {
+    "theme": "dark",
+    "doc_code_color": "#ddd",
+    "doc_inline_code_color": "#ddd",
+})
+call-function: ("check-colors", {
+    "theme": "light",
+    "doc_code_color": "black",
+    "doc_inline_code_color": "black",
+})
diff --git a/tests/rustdoc-gui/help-page.goml b/tests/rustdoc-gui/help-page.goml
index 6e880302f28..84c20355500 100644
--- a/tests/rustdoc-gui/help-page.goml
+++ b/tests/rustdoc-gui/help-page.goml
@@ -33,21 +33,21 @@ define-function: (
 
 call-function: ("check-colors", {
     "theme": "ayu",
-    "color": "rgb(197, 197, 197)",
-    "background": "rgb(49, 69, 89)",
-    "box_shadow": "rgb(92, 103, 115)",
+    "color": "#c5c5c5",
+    "background": "#314559",
+    "box_shadow": "#5c6773",
 })
 call-function: ("check-colors", {
     "theme": "dark",
-    "color": "rgb(0, 0, 0)",
-    "background": "rgb(250, 251, 252)",
-    "box_shadow": "rgb(198, 203, 209)",
+    "color": "#000",
+    "background": "#fafbfc",
+    "box_shadow": "#c6cbd1",
 })
 call-function: ("check-colors", {
     "theme": "light",
-    "color": "rgb(0, 0, 0)",
-    "background": "rgb(250, 251, 252)",
-    "box_shadow": "rgb(198, 203, 209)",
+    "color": "#000",
+    "background": "#fafbfc",
+    "box_shadow": "#c6cbd1",
 })
 
 // This test ensures that opening the help popover without switching pages works.
diff --git a/tests/rustdoc-gui/search-no-result.goml b/tests/rustdoc-gui/search-no-result.goml
index 46d1856b4d6..e7c64791256 100644
--- a/tests/rustdoc-gui/search-no-result.goml
+++ b/tests/rustdoc-gui/search-no-result.goml
@@ -21,16 +21,16 @@ define-function: (
 
 call-function: ("check-no-result", {
     "theme": "ayu",
-    "link": "rgb(57, 175, 215)",
-    "link_hover": "rgb(57, 175, 215)",
+    "link": "#39afd7",
+    "link_hover": "#39afd7",
 })
 call-function: ("check-no-result", {
     "theme": "dark",
-    "link": "rgb(210, 153, 29)",
-    "link_hover": "rgb(210, 153, 29)",
+    "link": "#d2991d",
+    "link_hover": "#d2991d",
 })
 call-function: ("check-no-result", {
     "theme": "light",
-    "link": "rgb(56, 115, 173)",
-    "link_hover": "rgb(56, 115, 173)",
+    "link": "#3873ad",
+    "link_hover": "#3873ad",
 })
diff --git a/tests/rustdoc-gui/search-result-color.goml b/tests/rustdoc-gui/search-result-color.goml
index f9f81c5ba04..44677dfbfef 100644
--- a/tests/rustdoc-gui/search-result-color.goml
+++ b/tests/rustdoc-gui/search-result-color.goml
@@ -151,7 +151,7 @@ assert-css: (
 )
 assert-css: (
     "//*[@class='result-name']//*[text()='test_docs::']/ancestor::a",
-    {"color": "#fff", "background-color": "rgb(60, 60, 60)"},
+    {"color": "#fff", "background-color": "#3c3c3c"},
 )
 
 // Dark theme
diff --git a/tests/rustdoc-gui/sidebar-source-code.goml b/tests/rustdoc-gui/sidebar-source-code.goml
index 69c589741cb..92b9045b734 100644
--- a/tests/rustdoc-gui/sidebar-source-code.goml
+++ b/tests/rustdoc-gui/sidebar-source-code.goml
@@ -73,7 +73,7 @@ assert: "//*[@class='dir-entry' and @open]/*[text()='sub_mod']"
 // Only "another_folder" should be "open" in "lib2".
 assert: "//*[@class='dir-entry' and not(@open)]/*[text()='another_mod']"
 // All other trees should be collapsed.
-assert-count: ("//*[@id='src-sidebar']/details[not(text()='lib2') and not(@open)]", 9)
+assert-count: ("//*[@id='src-sidebar']/details[not(text()='lib2') and not(@open)]", 10)
 
 // We now switch to mobile mode.
 set-window-size: (600, 600)
diff --git a/tests/rustdoc-gui/sidebar.goml b/tests/rustdoc-gui/sidebar.goml
index 913d72932b9..520481d3bba 100644
--- a/tests/rustdoc-gui/sidebar.goml
+++ b/tests/rustdoc-gui/sidebar.goml
@@ -25,24 +25,24 @@ call-function: (
     "check-colors",
     {
         "theme": "ayu",
-        "color": "rgb(197, 197, 197)",
-        "background_color": "rgb(20, 25, 31)",
+        "color": "#c5c5c5",
+        "background_color": "#14191f",
     }
 )
 call-function: (
     "check-colors",
     {
         "theme": "dark",
-        "color": "rgb(221, 221, 221)",
-        "background_color": "rgb(80, 80, 80)",
+        "color": "#ddd",
+        "background_color": "#505050",
     }
 )
 call-function: (
     "check-colors",
     {
         "theme": "light",
-        "color": "rgb(0, 0, 0)",
-        "background_color": "rgb(245, 245, 245)",
+        "color": "black",
+        "background_color": "#f5f5f5",
     }
 )
 
@@ -55,7 +55,7 @@ assert-text: (".sidebar > .location", "Crate test_docs")
 assert-count: (".sidebar .location", 1)
 assert-count: (".sidebar h2", 1)
 assert-text: ("#all-types", "All Items")
-assert-css: ("#all-types", {"color": "rgb(53, 109, 164)"})
+assert-css: ("#all-types", {"color": "#356da4"})
 // We check that we have the crates list and that the "current" on is "test_docs".
 assert-text: (".sidebar-elems ul.crate > li > a.current", "test_docs")
 // And we're also supposed to have the list of items in the current module.
@@ -88,7 +88,7 @@ assert-property: ("html", {"scrollTop": "0"})
 // We now go back to the crate page to click on the "lib2" crate link.
 go-to: "file://" + |DOC_PATH| + "/test_docs/index.html"
 assert-property: (".sidebar", {"clientWidth": "200"})
-assert-css: (".sidebar-elems ul.crate > li:first-child > a", {"color": "rgb(53, 109, 164)"})
+assert-css: (".sidebar-elems ul.crate > li:first-child > a", {"color": "#356da4"})
 click: ".sidebar-elems ul.crate > li:first-child > a"
 
 // PAGE: lib2/index.html
@@ -140,7 +140,7 @@ go-to: "file://" + |DOC_PATH| + "/test_docs/struct.Foo.html"
 assert-property: (".sidebar", {"clientWidth": "200"})
 click: "//ul[@class='block mod']/preceding-sibling::h3/a"
 // PAGE: index.html
-assert-css: ("#modules", {"background-color": "rgb(253, 255, 211)"})
+assert-css: ("#modules", {"background-color": "#fdffd3"})
 
 // Finally, assert that the `[+]/[−]` toggle doesn't affect sidebar width.
 click: "#toggle-all-docs"
diff --git a/tests/rustdoc-gui/src/theme_css/Cargo.lock b/tests/rustdoc-gui/src/theme_css/Cargo.lock
new file mode 100644
index 00000000000..7ad6737a4d0
--- /dev/null
+++ b/tests/rustdoc-gui/src/theme_css/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "theme_css"
+version = "0.1.0"
diff --git a/tests/rustdoc-gui/src/theme_css/Cargo.toml b/tests/rustdoc-gui/src/theme_css/Cargo.toml
new file mode 100644
index 00000000000..798e64f9309
--- /dev/null
+++ b/tests/rustdoc-gui/src/theme_css/Cargo.toml
@@ -0,0 +1,7 @@
+[package]
+name = "theme_css"
+version = "0.1.0"
+edition = "2018"
+
+[lib]
+path = "lib.rs"
diff --git a/tests/rustdoc-gui/src/theme_css/custom-theme.css b/tests/rustdoc-gui/src/theme_css/custom-theme.css
new file mode 100644
index 00000000000..260ef87f6ea
--- /dev/null
+++ b/tests/rustdoc-gui/src/theme_css/custom-theme.css
@@ -0,0 +1,99 @@
+:root {
+	--main-background-color: red;
+	--main-color: black;
+	--settings-input-color: #2196f3;
+	--settings-input-border-color: #717171;
+	--settings-button-color: #000;
+	--settings-button-border-focus: #717171;
+	--sidebar-background-color: #f5f5f5;
+	--sidebar-background-color-hover: #e0e0e0;
+	--code-block-background-color: #f5f5f5;
+	--scrollbar-track-background-color: #dcdcdc;
+	--scrollbar-thumb-background-color: rgba(36, 37, 39, 0.6);
+	--scrollbar-color: rgba(36, 37, 39, 0.6) #d9d9d9;
+	--headings-border-bottom-color: #ddd;
+	--border-color: #e0e0e0;
+	--button-background-color: #fff;
+	--right-side-color: grey;
+	--code-attribute-color: #999;
+	--toggles-color: #999;
+	--toggle-filter: none;
+	--search-input-focused-border-color: #66afe9;
+	--copy-path-button-color: #999;
+	--copy-path-img-filter: invert(50%);
+	--copy-path-img-hover-filter: invert(35%);
+	--codeblock-error-hover-color: rgb(255, 0, 0);
+	--codeblock-error-color: rgba(255, 0, 0, .5);
+	--codeblock-ignore-hover-color: rgb(255, 142, 0);
+	--codeblock-ignore-color: rgba(255, 142, 0, .6);
+	--warning-border-color: #ff8e00;
+	--type-link-color: #ad378a;
+	--trait-link-color: #6e4fc9;
+	--assoc-item-link-color: #3873ad;
+	--function-link-color: #ad7c37;
+	--macro-link-color: #068000;
+	--keyword-link-color: #3873ad;
+	--mod-link-color: #3873ad;
+	--link-color: #3873ad;
+	--sidebar-link-color: #356da4;
+	--sidebar-current-link-background-color: #fff;
+	--search-result-link-focus-background-color: #ccc;
+	--search-result-border-color: #aaa3;
+	--search-color: #000;
+	--search-error-code-background-color: #d0cccc;
+	--search-results-alias-color: #000;
+	--search-results-grey-color: #999;
+	--search-tab-title-count-color: #888;
+	--search-tab-button-not-selected-border-top-color: #e6e6e6;
+	--search-tab-button-not-selected-background: #e6e6e6;
+	--search-tab-button-selected-border-top-color: #0089ff;
+	--search-tab-button-selected-background: #fff;
+	--stab-background-color: #fff5d6;
+	--stab-code-color: #000;
+	--code-highlight-kw-color: #8959a8;
+	--code-highlight-kw-2-color: #4271ae;
+	--code-highlight-lifetime-color: #b76514;
+	--code-highlight-prelude-color: #4271ae;
+	--code-highlight-prelude-val-color: #c82829;
+	--code-highlight-number-color: #718c00;
+	--code-highlight-string-color: #718c00;
+	--code-highlight-literal-color: #c82829;
+	--code-highlight-attribute-color: #c82829;
+	--code-highlight-self-color: #c82829;
+	--code-highlight-macro-color: #3e999f;
+	--code-highlight-question-mark-color: #ff9011;
+	--code-highlight-comment-color: #8e908c;
+	--code-highlight-doc-comment-color: #4d4d4c;
+	--src-line-numbers-span-color: #c67e2d;
+	--src-line-number-highlighted-background-color: #fdffd3;
+	--test-arrow-color: #f5f5f5;
+	--test-arrow-background-color: rgba(78, 139, 202, 0.2);
+	--test-arrow-hover-color: #f5f5f5;
+	--test-arrow-hover-background-color: rgb(78, 139, 202);
+	--target-background-color: #fdffd3;
+	--target-border-color: #ad7c37;
+	--kbd-color: #000;
+	--kbd-background: #fafbfc;
+	--kbd-box-shadow-color: #c6cbd1;
+	--rust-logo-filter: initial;
+	/* match border-color; uses https://codepen.io/sosuke/pen/Pjoqqp */
+	--crate-search-div-filter: invert(100%) sepia(0%) saturate(4223%) hue-rotate(289deg)
+		brightness(114%) contrast(76%);
+	--crate-search-div-hover-filter: invert(44%) sepia(18%) saturate(23%) hue-rotate(317deg)
+		brightness(96%) contrast(93%);
+	--crate-search-hover-border: #717171;
+	--src-sidebar-background-selected: #fff;
+	--src-sidebar-background-hover: #e0e0e0;
+	--table-alt-row-background-color: #f5f5f5;
+	--codeblock-link-background: #eee;
+	--scrape-example-toggle-line-background: #ccc;
+	--scrape-example-toggle-line-hover-background: #999;
+	--scrape-example-code-line-highlight: #fcffd6;
+	--scrape-example-code-line-highlight-focus: #f6fdb0;
+	--scrape-example-help-border-color: #555;
+	--scrape-example-help-color: #333;
+	--scrape-example-help-hover-border-color: #000;
+	--scrape-example-help-hover-color: #000;
+	--scrape-example-code-wrapper-background-start: rgba(255, 255, 255, 1);
+	--scrape-example-code-wrapper-background-end: rgba(255, 255, 255, 0);
+}
diff --git a/tests/rustdoc-gui/src/theme_css/lib.rs b/tests/rustdoc-gui/src/theme_css/lib.rs
new file mode 100644
index 00000000000..e9f3265fa6b
--- /dev/null
+++ b/tests/rustdoc-gui/src/theme_css/lib.rs
@@ -0,0 +1,2 @@
+// compile-flags: --theme custom-theme.css
+//! <div class="custom-text">custom text</div>
diff --git a/tests/rustdoc-gui/theme-change.goml b/tests/rustdoc-gui/theme-change.goml
index e4b031b735e..fdaf9d6289a 100644
--- a/tests/rustdoc-gui/theme-change.goml
+++ b/tests/rustdoc-gui/theme-change.goml
@@ -65,3 +65,36 @@ assert-local-storage: { "rustdoc-theme": "light" }
 reload:
 wait-for: "#settings"
 assert: "#preferred-light-theme.setting-line.hidden"
+
+// Ensures that the custom theme feature is working as expected.
+go-to: "file://" + |DOC_PATH| + "/theme_css/index.html"
+set-local-storage: {"rustdoc-use-system-theme": "false", "rustdoc-theme": "dark"}
+reload:
+
+store-value: (background_light, "white")
+store-value: (background_dark, "#353535")
+store-value: (background_ayu, "#0f1419")
+store-value: (background_custom_theme, "red")
+
+click: "#settings-menu"
+wait-for: "#theme-ayu"
+click: "#theme-ayu"
+// should be the ayu theme so let's check the color.
+wait-for-css: ("body", { "background-color": |background_ayu| })
+assert-local-storage: { "rustdoc-theme": "ayu" }
+assert-text: (".custom-text", "custom text")
+click: "#theme-light"
+// should be the light theme so let's check the color.
+wait-for-css: ("body", { "background-color": |background_light| })
+assert-local-storage: { "rustdoc-theme": "light" }
+assert-text: (".custom-text", "custom text")
+click: "#theme-dark"
+// Should be the dark theme so let's check the color.
+wait-for-css: ("body", { "background-color": |background_dark| })
+assert-local-storage: { "rustdoc-theme": "dark" }
+assert-text: (".custom-text", "custom text")
+click: "#theme-custom-theme"
+// Should be the custom theme so let's check the color.
+wait-for-css: ("body", { "background-color": |background_custom_theme| })
+assert-local-storage: { "rustdoc-theme": "custom-theme" }
+assert-text: (".custom-text", "custom text")
diff --git a/tests/rustdoc-js-std/full-path-function.js b/tests/rustdoc-js-std/full-path-function.js
new file mode 100644
index 00000000000..ac157b3aadf
--- /dev/null
+++ b/tests/rustdoc-js-std/full-path-function.js
@@ -0,0 +1,7 @@
+const EXPECTED = {
+    'query': 'vec::vec -> usize',
+    'others': [
+        { 'path': 'std::vec::Vec', 'name': 'len' },
+        { 'path': 'std::vec::Vec', 'name': 'capacity' },
+    ],
+};
diff --git a/tests/rustdoc-js/full-path-function.js b/tests/rustdoc-js/full-path-function.js
new file mode 100644
index 00000000000..48be51b156f
--- /dev/null
+++ b/tests/rustdoc-js/full-path-function.js
@@ -0,0 +1,43 @@
+// exact-check
+
+const EXPECTED = [
+    {
+        'query': 'sac -> usize',
+        'others': [
+            { 'path': 'full_path_function::b::Sac', 'name': 'bar' },
+            { 'path': 'full_path_function::b::Sac', 'name': 'len' },
+            { 'path': 'full_path_function::sac::Sac', 'name': 'len' },
+        ],
+    },
+    {
+        'query': 'b::sac -> usize',
+        'others': [
+            { 'path': 'full_path_function::b::Sac', 'name': 'bar' },
+            { 'path': 'full_path_function::b::Sac', 'name': 'len' },
+        ],
+    },
+    {
+        'query': 'b::sac -> u32',
+        'others': [
+            { 'path': 'full_path_function::b::Sac', 'name': 'bar2' },
+        ],
+    },
+    {
+        'query': 'string::string -> u32',
+        'others': [
+            { 'path': 'full_path_function::b::Sac', 'name': 'string' },
+        ],
+    },
+    {
+        'query': 'alloc::string::string -> u32',
+        'others': [
+            { 'path': 'full_path_function::b::Sac', 'name': 'string' },
+        ],
+    },
+    {
+        'query': 'alloc::string -> u32',
+        'others': [
+            { 'path': 'full_path_function::b::Sac', 'name': 'string' },
+        ],
+    },
+];
diff --git a/tests/rustdoc-js/full-path-function.rs b/tests/rustdoc-js/full-path-function.rs
new file mode 100644
index 00000000000..8dcc3f2b69d
--- /dev/null
+++ b/tests/rustdoc-js/full-path-function.rs
@@ -0,0 +1,17 @@
+pub mod sac {
+    pub struct Sac;
+
+    impl Sac {
+        pub fn len(&self) -> usize { 0 }
+    }
+}
+
+pub mod b {
+    pub struct Sac;
+    impl Sac {
+        pub fn len(&self) -> usize { 0 }
+        pub fn bar(&self, w: u32) -> usize { 0 }
+        pub fn bar2(&self, w: u32) -> u32 { 0 }
+        pub fn string(w: String) -> u32 { 0 }
+    }
+}
diff --git a/tests/rustdoc-ui/custom_code_classes_in_docs-warning.rs b/tests/rustdoc-ui/custom_code_classes_in_docs-warning.rs
new file mode 100644
index 00000000000..dd8759b7e37
--- /dev/null
+++ b/tests/rustdoc-ui/custom_code_classes_in_docs-warning.rs
@@ -0,0 +1,85 @@
+// This test ensures that warnings are working as expected for "custom_code_classes_in_docs"
+// feature.
+
+#![feature(custom_code_classes_in_docs)]
+#![deny(warnings)]
+#![feature(no_core)]
+#![no_core]
+
+/// ```{. }
+/// main;
+/// ```
+//~^^^ ERROR unexpected ` ` character after `.`
+pub fn foo() {}
+
+/// ```{class= a}
+/// main;
+/// ```
+//~^^^ ERROR unexpected ` ` character after `=`
+pub fn foo2() {}
+
+/// ```{#id}
+/// main;
+/// ```
+//~^^^ ERROR unexpected character `#`
+pub fn foo3() {}
+
+/// ```{{
+/// main;
+/// ```
+//~^^^ ERROR unexpected character `{`
+pub fn foo4() {}
+
+/// ```}
+/// main;
+/// ```
+//~^^^ ERROR unexpected character `}`
+pub fn foo5() {}
+
+/// ```)
+/// main;
+/// ```
+//~^^^ ERROR unexpected character `)`
+pub fn foo6() {}
+
+/// ```{class=}
+/// main;
+/// ```
+//~^^^ ERROR unexpected `}` character after `=`
+pub fn foo7() {}
+
+/// ```(
+/// main;
+/// ```
+//~^^^ ERROR unclosed comment: missing `)` at the end
+pub fn foo8() {}
+
+/// ```{class=one=two}
+/// main;
+/// ```
+//~^^^ ERROR unexpected `=`
+pub fn foo9() {}
+
+/// ```{.one.two}
+/// main;
+/// ```
+//~^^^ ERROR unexpected `.` character
+pub fn foo10() {}
+
+/// ```{class=.one}
+/// main;
+/// ```
+//~^^^ ERROR unexpected `.` character after `=`
+pub fn foo11() {}
+
+/// ```{class=one.two}
+/// main;
+/// ```
+//~^^^ ERROR unexpected `.` character
+pub fn foo12() {}
+
+/// ```{(comment)}
+/// main;
+/// ```
+//~^^^ ERROR unexpected character `(`
+pub fn foo13() {}
diff --git a/tests/rustdoc-ui/custom_code_classes_in_docs-warning.stderr b/tests/rustdoc-ui/custom_code_classes_in_docs-warning.stderr
new file mode 100644
index 00000000000..3e0dc4b2f7a
--- /dev/null
+++ b/tests/rustdoc-ui/custom_code_classes_in_docs-warning.stderr
@@ -0,0 +1,113 @@
+error: unexpected ` ` character after `.`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:9:1
+   |
+LL | / /// ```{. }
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+   |
+note: the lint level is defined here
+  --> $DIR/custom_code_classes_in_docs-warning.rs:5:9
+   |
+LL | #![deny(warnings)]
+   |         ^^^^^^^^
+   = note: `#[deny(rustdoc::invalid_codeblock_attributes)]` implied by `#[deny(warnings)]`
+
+error: unexpected ` ` character after `=`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:15:1
+   |
+LL | / /// ```{class= a}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected character `#`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:21:1
+   |
+LL | / /// ```{#id}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected character `{`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:27:1
+   |
+LL | / /// ```{{
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected character `}`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:33:1
+   |
+LL | / /// ```}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected character `)`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:39:1
+   |
+LL | / /// ```)
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected `}` character after `=`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:45:1
+   |
+LL | / /// ```{class=}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unclosed comment: missing `)` at the end
+  --> $DIR/custom_code_classes_in_docs-warning.rs:51:1
+   |
+LL | / /// ```(
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected `=` character
+  --> $DIR/custom_code_classes_in_docs-warning.rs:57:1
+   |
+LL | / /// ```{class=one=two}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected `.` character
+  --> $DIR/custom_code_classes_in_docs-warning.rs:63:1
+   |
+LL | / /// ```{.one.two}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected `.` character after `=`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:69:1
+   |
+LL | / /// ```{class=.one}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected `.` character
+  --> $DIR/custom_code_classes_in_docs-warning.rs:75:1
+   |
+LL | / /// ```{class=one.two}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: unexpected character `(`
+  --> $DIR/custom_code_classes_in_docs-warning.rs:81:1
+   |
+LL | / /// ```{(comment)}
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: aborting due to 13 previous errors
+
diff --git a/tests/rustdoc-ui/custom_code_classes_in_docs-warning3.rs b/tests/rustdoc-ui/custom_code_classes_in_docs-warning3.rs
new file mode 100644
index 00000000000..57d9038cb0c
--- /dev/null
+++ b/tests/rustdoc-ui/custom_code_classes_in_docs-warning3.rs
@@ -0,0 +1,17 @@
+// This test ensures that warnings are working as expected for "custom_code_classes_in_docs"
+// feature.
+
+#![feature(custom_code_classes_in_docs)]
+#![deny(warnings)]
+#![feature(no_core)]
+#![no_core]
+
+/// ```{class="}
+/// main;
+/// ```
+//~^^^ ERROR unclosed quote string
+//~| ERROR unclosed quote string
+/// ```"
+/// main;
+/// ```
+pub fn foo() {}
diff --git a/tests/rustdoc-ui/custom_code_classes_in_docs-warning3.stderr b/tests/rustdoc-ui/custom_code_classes_in_docs-warning3.stderr
new file mode 100644
index 00000000000..4f2ded78c29
--- /dev/null
+++ b/tests/rustdoc-ui/custom_code_classes_in_docs-warning3.stderr
@@ -0,0 +1,33 @@
+error: unclosed quote string `"`
+  --> $DIR/custom_code_classes_in_docs-warning3.rs:9:1
+   |
+LL | / /// ```{class="}
+LL | | /// main;
+LL | | /// ```
+LL | |
+...  |
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+   |
+note: the lint level is defined here
+  --> $DIR/custom_code_classes_in_docs-warning3.rs:5:9
+   |
+LL | #![deny(warnings)]
+   |         ^^^^^^^^
+   = note: `#[deny(rustdoc::invalid_codeblock_attributes)]` implied by `#[deny(warnings)]`
+
+error: unclosed quote string `"`
+  --> $DIR/custom_code_classes_in_docs-warning3.rs:9:1
+   |
+LL | / /// ```{class="}
+LL | | /// main;
+LL | | /// ```
+LL | |
+...  |
+LL | | /// main;
+LL | | /// ```
+   | |_______^
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.rs b/tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.rs
new file mode 100644
index 00000000000..8aa13b2d5d1
--- /dev/null
+++ b/tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.rs
@@ -0,0 +1,5 @@
+/// ```{class=language-c}
+/// int main(void) { return 0; }
+/// ```
+//~^^^ ERROR 1:1: 3:8: custom classes in code blocks are unstable [E0658]
+pub struct Bar;
diff --git a/tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.stderr b/tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.stderr
new file mode 100644
index 00000000000..c41ebfc8073
--- /dev/null
+++ b/tests/rustdoc-ui/feature-gate-custom_code_classes_in_docs.stderr
@@ -0,0 +1,15 @@
+error[E0658]: custom classes in code blocks are unstable
+  --> $DIR/feature-gate-custom_code_classes_in_docs.rs:1:1
+   |
+LL | / /// ```{class=language-c}
+LL | | /// int main(void) { return 0; }
+LL | | /// ```
+   | |_______^
+   |
+   = note: see issue #79483 <https://github.com/rust-lang/rust/issues/79483> for more information
+   = help: add `#![feature(custom_code_classes_in_docs)]` to the crate attributes to enable
+   = note: found these custom classes: class=language-c
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/rustdoc-ui/issues/issue-91713.stdout b/tests/rustdoc-ui/issues/issue-91713.stdout
index 16783524363..bbea7e5c212 100644
--- a/tests/rustdoc-ui/issues/issue-91713.stdout
+++ b/tests/rustdoc-ui/issues/issue-91713.stdout
@@ -1,4 +1,5 @@
 Available passes for running rustdoc:
+check-custom-code-classes - check for custom code classes without the feature-gate enabled
 check_doc_test_visibility - run various visibility-related lints on doctests
         strip-hidden - strips all `#[doc(hidden)]` items from the output
        strip-private - strips all private items from a crate which cannot be seen externally, implies strip-priv-imports
@@ -10,6 +11,7 @@ calculate-doc-coverage - counts the number of items with and without documentati
            run-lints - runs some of rustdoc's lints
 
 Default passes for rustdoc:
+check-custom-code-classes
  collect-trait-impls
 check_doc_test_visibility
         strip-hidden  (when not --document-hidden-items)
diff --git a/tests/rustdoc/auxiliary/cross_crate_generic_typedef.rs b/tests/rustdoc/auxiliary/cross_crate_generic_typedef.rs
new file mode 100644
index 00000000000..f4e020b3b95
--- /dev/null
+++ b/tests/rustdoc/auxiliary/cross_crate_generic_typedef.rs
@@ -0,0 +1,5 @@
+pub struct InlineOne<A> {
+   pub inline: A
+}
+
+pub type InlineU64 = InlineOne<u64>;
diff --git a/tests/rustdoc/const-generics/const-generic-defaults.rs b/tests/rustdoc/const-generics/const-generic-defaults.rs
index f781c6a62f2..7a0a794112d 100644
--- a/tests/rustdoc/const-generics/const-generic-defaults.rs
+++ b/tests/rustdoc/const-generics/const-generic-defaults.rs
@@ -1,5 +1,5 @@
 #![crate_name = "foo"]
 
 // @has foo/struct.Foo.html '//pre[@class="rust item-decl"]' \
-//      'pub struct Foo<const M: usize = 10, const N: usize = M, T = i32>(_);'
+//      'pub struct Foo<const M: usize = 10, const N: usize = M, T = i32>('
 pub struct Foo<const M: usize = 10, const N: usize = M, T = i32>(T);
diff --git a/tests/rustdoc/const-generics/const-generics-docs.rs b/tests/rustdoc/const-generics/const-generics-docs.rs
index 828486a41d4..70a9518f05b 100644
--- a/tests/rustdoc/const-generics/const-generics-docs.rs
+++ b/tests/rustdoc/const-generics/const-generics-docs.rs
@@ -33,7 +33,7 @@ impl<const N: usize> Trait<N> for [u8; N] {}
 // @has foo/struct.Foo.html '//pre[@class="rust item-decl"]' \
 //      'pub struct Foo<const N: usize> where u8: Trait<N>'
 pub struct Foo<const N: usize> where u8: Trait<N>;
-// @has foo/struct.Bar.html '//pre[@class="rust item-decl"]' 'pub struct Bar<T, const N: usize>(_)'
+// @has foo/struct.Bar.html '//pre[@class="rust item-decl"]' 'pub struct Bar<T, const N: usize>('
 pub struct Bar<T, const N: usize>([T; N]);
 
 // @has foo/struct.Foo.html '//*[@id="impl-Foo%3CM%3E"]/h3[@class="code-header"]' 'impl<const M: usize> Foo<M>where u8: Trait<M>'
@@ -92,7 +92,7 @@ macro_rules! define_me {
 }
 
 // @has foo/struct.Foz.html '//pre[@class="rust item-decl"]' \
-//      'pub struct Foz<const N: usize>(_);'
+//      'pub struct Foz<const N: usize>(/* private fields */);'
 define_me!(Foz<N>);
 
 trait Q {
diff --git a/tests/rustdoc/custom_code_classes.rs b/tests/rustdoc/custom_code_classes.rs
new file mode 100644
index 00000000000..cd20d8b7d6c
--- /dev/null
+++ b/tests/rustdoc/custom_code_classes.rs
@@ -0,0 +1,28 @@
+// Test for `custom_code_classes_in_docs` feature.
+
+#![feature(custom_code_classes_in_docs)]
+#![crate_name = "foo"]
+#![feature(no_core)]
+#![no_core]
+
+// @has 'foo/struct.Bar.html'
+// @has - '//*[@id="main-content"]//pre[@class="language-whatever hoho-c"]' 'main;'
+// @has - '//*[@id="main-content"]//pre[@class="language-whatever2 haha-c"]' 'main;'
+// @has - '//*[@id="main-content"]//pre[@class="language-whatever4 huhu-c"]' 'main;'
+
+/// ```{class=hoho-c},whatever
+/// main;
+/// ```
+///
+/// Testing multiple kinds of orders.
+///
+/// ```whatever2 {class=haha-c}
+/// main;
+/// ```
+///
+/// Testing with multiple "unknown". Only the first should be used.
+///
+/// ```whatever4,{.huhu-c} whatever5
+/// main;
+/// ```
+pub struct Bar;
diff --git a/tests/rustdoc/inline_cross/auxiliary/dyn_trait.rs b/tests/rustdoc/inline_cross/auxiliary/dyn_trait.rs
index 644d0699e9d..df88530071b 100644
--- a/tests/rustdoc/inline_cross/auxiliary/dyn_trait.rs
+++ b/tests/rustdoc/inline_cross/auxiliary/dyn_trait.rs
@@ -65,3 +65,22 @@ pub trait HigherRankedBoundTrait1<'e> where for<'l> Self: 'e + 'l {}
 pub trait AmbiguousBoundTrait<'a, 'b>: 'a + 'b {}
 
 pub struct AmbiguousBoundWrapper<'a, 'b, T: ?Sized + 'a + 'b>(&'a T, &'b T);
+
+// Trait objects inside of another trait object, a trait bound or an associated type.
+
+pub trait Inner {}
+pub trait Outer<T: ?Sized> {}
+pub trait Base {
+    type Type<T: ?Sized>;
+}
+impl Base for () {
+    type Type<T: ?Sized> = ();
+}
+
+pub type NestedTraitObjects = dyn Outer<dyn Inner>;
+
+pub fn apit_rpit(o: impl Outer<dyn Inner>) -> impl Outer<dyn Inner> {
+    o
+}
+
+pub type AssocTy = <() as Base>::Type<dyn Inner>;
diff --git a/tests/rustdoc/inline_cross/dyn_trait.rs b/tests/rustdoc/inline_cross/dyn_trait.rs
index 1de01af83d1..679972f035a 100644
--- a/tests/rustdoc/inline_cross/dyn_trait.rs
+++ b/tests/rustdoc/inline_cross/dyn_trait.rs
@@ -128,3 +128,18 @@ pub use dyn_trait::BareAmbiguousBoundEarly1;
 // @has user/type.BareAmbiguousBoundStatic.html
 // @has - '//*[@class="rust item-decl"]//code' "dyn AmbiguousBoundTrait<'o, 'o> + 'static;"
 pub use dyn_trait::BareAmbiguousBoundStatic;
+
+// Regression test for issue #115179:
+
+// @has user/type.NestedTraitObjects.html
+// @has - '//*[@class="rust item-decl"]//code' "dyn Outer<dyn Inner>;"
+pub use dyn_trait::NestedTraitObjects;
+
+// @has user/fn.apit_rpit.html
+// @has - '//pre[@class="rust item-decl"]' \
+//     "apit_rpit(o: impl Outer<dyn Inner>) -> impl Outer<dyn Inner>"
+pub use dyn_trait::apit_rpit;
+
+// @has user/type.AssocTy.html
+// @has - '//*[@class="rust item-decl"]//code' "<() as Base>::Type<dyn Inner>"
+pub use dyn_trait::AssocTy;
diff --git a/tests/rustdoc/issue-32077-type-alias-impls.rs b/tests/rustdoc/issue-32077-type-alias-impls.rs
new file mode 100644
index 00000000000..ac486c36ad0
--- /dev/null
+++ b/tests/rustdoc/issue-32077-type-alias-impls.rs
@@ -0,0 +1,66 @@
+// Regression test for <https://github.com/rust-lang/rust/issues/32077>.
+
+#![crate_name = "foo"]
+
+pub struct GenericStruct<T>(T);
+
+impl<T> GenericStruct<T> {
+    pub fn on_gen(arg: T) {}
+}
+
+impl GenericStruct<u32> {
+    pub fn on_u32(arg: u32) {}
+}
+
+pub trait Foo {}
+pub trait Bar {}
+
+impl<T> Foo for GenericStruct<T> {}
+impl Bar for GenericStruct<u32> {}
+
+// @has 'foo/type.TypedefStruct.html'
+// We check that "Aliased type" is also present as a title in the sidebar.
+// @has - '//*[@class="sidebar-elems"]//h3/a[@href="#aliased-type"]' 'Aliased type'
+// We check that we have the implementation of the type alias itself.
+// @has - '//*[@id="impl-TypedefStruct"]/h3' 'impl TypedefStruct'
+// @has - '//*[@id="method.on_alias"]/h4' 'pub fn on_alias()'
+// @has - '//*[@id="impl-GenericStruct%3CT%3E"]/h3' 'impl<T> GenericStruct<T>'
+// @has - '//*[@id="method.on_gen"]/h4' 'pub fn on_gen(arg: T)'
+// @has - '//*[@id="impl-Foo-for-GenericStruct%3CT%3E"]/h3' 'impl<T> Foo for GenericStruct<T>'
+// This trait implementation doesn't match the type alias parameters so shouldn't appear in docs.
+// @!has - '//h3' 'impl Bar for GenericStruct<u32> {}'
+// Same goes for the `Deref` impl.
+// @!has - '//h2' 'Methods from Deref<Target = u32>'
+// @count - '//nav[@class="sidebar"]//a' 'on_alias' 1
+// @count - '//nav[@class="sidebar"]//a' 'on_gen' 1
+// @count - '//nav[@class="sidebar"]//a' 'Foo' 1
+// @!has - '//nav[@class="sidebar"]//a' 'Bar'
+// @!has - '//nav[@class="sidebar"]//a' 'on_u32'
+pub type TypedefStruct = GenericStruct<u8>;
+
+impl TypedefStruct {
+    pub fn on_alias() {}
+}
+
+impl std::ops::Deref for GenericStruct<u32> {
+    type Target = u32;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
+
+pub struct Wrap<T>(GenericStruct<T>);
+
+// @has 'foo/type.Alias.html'
+// @has - '//h2' 'Methods from Deref<Target = u32>'
+// @has - '//*[@id="impl-Deref-for-Wrap%3CT%3E"]/h3' 'impl<T> Deref for Wrap<T>'
+pub type Alias = Wrap<u32>;
+
+impl<T> std::ops::Deref for Wrap<T> {
+    type Target = GenericStruct<T>;
+
+    fn deref(&self) -> &Self::Target {
+        &self.0
+    }
+}
diff --git a/tests/rustdoc/issue-88600.rs b/tests/rustdoc/issue-88600.rs
index db0d102b741..f89af472f6e 100644
--- a/tests/rustdoc/issue-88600.rs
+++ b/tests/rustdoc/issue-88600.rs
@@ -8,10 +8,10 @@ pub struct S;
 
 // @has issue_88600/enum.FooEnum.html
 pub enum FooEnum {
-    // @has - '//*[@id="variant.HiddenTupleItem"]//h3' 'HiddenTupleItem(_)'
+    // @has - '//*[@id="variant.HiddenTupleItem"]//h3' 'HiddenTupleItem(/* private fields */)'
     // @count - '//*[@id="variant.HiddenTupleItem.field.0"]' 0
     HiddenTupleItem(#[doc(hidden)] H),
-    // @has - '//*[@id="variant.MultipleHidden"]//h3' 'MultipleHidden(_, _)'
+    // @has - '//*[@id="variant.MultipleHidden"]//h3' 'MultipleHidden(/* private fields */)'
     // @count - '//*[@id="variant.MultipleHidden.field.0"]' 0
     // @count - '//*[@id="variant.MultipleHidden.field.1"]' 0
     MultipleHidden(#[doc(hidden)] H, #[doc(hidden)] H),
diff --git a/tests/rustdoc/private-fields-tuple-struct.rs b/tests/rustdoc/private-fields-tuple-struct.rs
new file mode 100644
index 00000000000..c6989dd8cdf
--- /dev/null
+++ b/tests/rustdoc/private-fields-tuple-struct.rs
@@ -0,0 +1,15 @@
+// This test checks the diplay of "/* private fields */" sentence in tuple structs.
+#![crate_name = "foo"]
+
+// @has 'foo/struct.A.html' '//*[@class="rust item-decl"]/code' 'pub struct A(pub u8, _);'
+pub struct A(pub u8, u8);
+// @has 'foo/struct.B.html' '//*[@class="rust item-decl"]/code' 'pub struct B(_, pub u8);'
+pub struct B(u8, pub u8);
+// @has 'foo/struct.C.html' '//*[@class="rust item-decl"]/code' 'pub struct C(_, pub u8, _);'
+pub struct C(u8, pub u8, u8);
+// @has 'foo/struct.D.html' '//*[@class="rust item-decl"]/code' 'pub struct D(pub u8, _, pub u8);'
+pub struct D(pub u8, u8, pub u8);
+// @has 'foo/struct.E.html' '//*[@class="rust item-decl"]/code' 'pub struct E(/* private fields */);'
+pub struct E(u8);
+// @has 'foo/struct.F.html' '//*[@class="rust item-decl"]/code' 'pub struct F(/* private fields */);'
+pub struct F(u8, u8);
diff --git a/tests/rustdoc/show-const-contents.rs b/tests/rustdoc/show-const-contents.rs
index 69e742ee747..91df03adbbc 100644
--- a/tests/rustdoc/show-const-contents.rs
+++ b/tests/rustdoc/show-const-contents.rs
@@ -47,7 +47,7 @@ pub struct MyTypeWithStr(&'static str);
 // @!hasraw show_const_contents/constant.MY_TYPE_WITH_STR.html '; //'
 pub const MY_TYPE_WITH_STR: MyTypeWithStr = MyTypeWithStr("show this");
 
-// @hasraw show_const_contents/constant.PI.html '= 3.14159265358979323846264338327950288f32;'
+// @hasraw show_const_contents/constant.PI.html '= 3.14159265358979323846264338327950288_f32;'
 // @hasraw show_const_contents/constant.PI.html '; // 3.14159274f32'
 pub use std::f32::consts::PI;
 
diff --git a/tests/rustdoc/typedef-inner-variants-lazy_type_alias.rs b/tests/rustdoc/typedef-inner-variants-lazy_type_alias.rs
new file mode 100644
index 00000000000..ff84352d716
--- /dev/null
+++ b/tests/rustdoc/typedef-inner-variants-lazy_type_alias.rs
@@ -0,0 +1,34 @@
+#![crate_name = "inner_types_lazy"]
+
+#![feature(lazy_type_alias)]
+#![allow(incomplete_features)]
+
+// @has 'inner_types_lazy/struct.Pair.html'
+pub struct Pair<A, B> {
+    pub first: A,
+    pub second: B,
+}
+
+// @has 'inner_types_lazy/type.ReversedTypesPair.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @count - '//span[@class="where fmt-newline"]' 0
+pub type ReversedTypesPair<Q, R> = Pair<R, Q>;
+
+// @has 'inner_types_lazy/type.ReadWrite.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @count - '//span[@class="where fmt-newline"]' 2
+pub type ReadWrite<R, W> = Pair<R, W>
+where
+    R: std::io::Read,
+    W: std::io::Write;
+
+// @has 'inner_types_lazy/type.VecPair.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @count - '//span[@class="where fmt-newline"]' 0
+pub type VecPair<U, V> = Pair<Vec<U>, Vec<V>>;
diff --git a/tests/rustdoc/typedef-inner-variants.rs b/tests/rustdoc/typedef-inner-variants.rs
new file mode 100644
index 00000000000..b734714fd64
--- /dev/null
+++ b/tests/rustdoc/typedef-inner-variants.rs
@@ -0,0 +1,119 @@
+// This test checks different combinations of structs, enums, and unions
+// for the "Show Aliased Type" feature on type definition.
+
+#![crate_name = "inner_variants"]
+
+// aux-build:cross_crate_generic_typedef.rs
+extern crate cross_crate_generic_typedef;
+
+pub struct Adt;
+pub struct Ty;
+pub struct TyCtxt;
+
+pub trait Interner {
+    type Adt;
+    type Ty;
+}
+
+impl Interner for TyCtxt {
+    type Adt = Adt;
+    type Ty = Ty;
+}
+
+// @has 'inner_variants/type.AliasTy.html'
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 0
+pub type AliasTy = Ty;
+
+// @has 'inner_variants/enum.IrTyKind.html'
+pub enum IrTyKind<A, I: Interner> {
+    /// Doc comment for AdtKind
+    AdtKind(I::Adt),
+    /// and another one for TyKind
+    TyKind(I::Adt, <I as Interner>::Ty),
+    // no comment
+    StructKind { a: A, },
+    #[doc(hidden)]
+    Unspecified,
+}
+
+// @has 'inner_variants/type.NearlyTyKind.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 1
+// @count - '//*[@id="fields"]' 0
+pub type NearlyTyKind<A> = IrTyKind<A, TyCtxt>;
+
+// @has 'inner_variants/type.TyKind.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 1
+// @count - '//*[@id="fields"]' 0
+// @count - '//*[@class="variant"]' 3
+// @matches - '//pre[@class="rust item-decl"]//code' "enum TyKind"
+// @has - '//pre[@class="rust item-decl"]//code/a[1]' "Adt"
+// @has - '//pre[@class="rust item-decl"]//code/a[2]' "Adt"
+// @has - '//pre[@class="rust item-decl"]//code/a[3]' "Ty"
+// @has - '//pre[@class="rust item-decl"]//code/a[4]' "i64"
+pub type TyKind = IrTyKind<i64, TyCtxt>;
+
+// @has 'inner_variants/union.OneOr.html'
+pub union OneOr<A: Copy> {
+    pub one: i64,
+    pub or: A,
+}
+
+// @has 'inner_variants/type.OneOrF64.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @count - '//*[@class="structfield small-section-header"]' 2
+// @matches - '//pre[@class="rust item-decl"]//code' "union OneOrF64"
+pub type OneOrF64 = OneOr<f64>;
+
+// @has 'inner_variants/struct.One.html'
+pub struct One<T> {
+    pub val: T,
+    #[doc(hidden)]
+    pub __hidden: T,
+    __private: T,
+}
+
+// @has 'inner_variants/type.OneU64.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @count - '//*[@class="structfield small-section-header"]' 1
+// @matches - '//pre[@class="rust item-decl"]//code' "struct OneU64"
+// @matches - '//pre[@class="rust item-decl"]//code' "pub val"
+pub type OneU64 = One<u64>;
+
+// @has 'inner_variants/struct.OnceA.html'
+pub struct OnceA<'a, A> {
+    pub a: &'a A,
+}
+
+// @has 'inner_variants/type.Once.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @matches - '//pre[@class="rust item-decl"]//code' "struct Once<'a>"
+// @matches - '//pre[@class="rust item-decl"]//code' "&'a"
+pub type Once<'a> = OnceA<'a, i64>;
+
+// @has 'inner_variants/struct.HighlyGenericStruct.html'
+pub struct HighlyGenericStruct<A, B, C, D> {
+    pub z: (A, B, C, D)
+}
+
+// @has 'inner_variants/type.HighlyGenericAABB.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+// @matches - '//pre[@class="rust item-decl"]//code' "struct HighlyGenericAABB<A, B>"
+// @matches - '//pre[@class="rust item-decl"]//code' "pub z"
+pub type HighlyGenericAABB<A, B> = HighlyGenericStruct<A, A, B, B>;
+
+// @has 'inner_variants/type.InlineU64.html'
+// @count - '//*[@id="aliased-type"]' 1
+// @count - '//*[@id="variants"]' 0
+// @count - '//*[@id="fields"]' 1
+pub use cross_crate_generic_typedef::InlineU64;
diff --git a/tests/rustdoc/where.SWhere_Simd_item-decl.html b/tests/rustdoc/where.SWhere_Simd_item-decl.html
index 3e72ba2b74f..46708b9e4e9 100644
--- a/tests/rustdoc/where.SWhere_Simd_item-decl.html
+++ b/tests/rustdoc/where.SWhere_Simd_item-decl.html
@@ -1,3 +1,3 @@
-<pre class="rust item-decl"><code>pub struct Simd&lt;T&gt;(_)
+<pre class="rust item-decl"><code>pub struct Simd&lt;T&gt;(/* private fields */)
 <span class="where">where
     T: <a class="trait" href="trait.MyTrait.html" title="trait foo::MyTrait">MyTrait</a></span>;</code></pre>
diff --git a/tests/rustdoc/where.alpha_trait_decl.html b/tests/rustdoc/where.alpha_trait_decl.html
index a7700055c9a..0c0b2d1ceca 100644
--- a/tests/rustdoc/where.alpha_trait_decl.html
+++ b/tests/rustdoc/where.alpha_trait_decl.html
@@ -1,3 +1,3 @@
-<code>pub struct Alpha&lt;A&gt;(_)
+<code>pub struct Alpha&lt;A&gt;(/* private fields */)
 <span class="where">where
     A: <a class="trait" href="trait.MyTrait.html" title="trait foo::MyTrait">MyTrait</a></span>;</code>
\ No newline at end of file
diff --git a/tests/rustdoc/where.rs b/tests/rustdoc/where.rs
index 2aa9c8b5461..aea02c14039 100644
--- a/tests/rustdoc/where.rs
+++ b/tests/rustdoc/where.rs
@@ -4,7 +4,7 @@ use std::io::Lines;
 
 pub trait MyTrait { fn dummy(&self) { } }
 
-// @has foo/struct.Alpha.html '//pre' "pub struct Alpha<A>(_) where A: MyTrait"
+// @has foo/struct.Alpha.html '//pre' "pub struct Alpha<A>(/* private fields */) where A: MyTrait"
 // @snapshot alpha_trait_decl - '//*[@class="rust item-decl"]/code'
 pub struct Alpha<A>(A) where A: MyTrait;
 // @has foo/trait.Bravo.html '//pre' "pub trait Bravo<B>where B: MyTrait"
diff --git a/tests/ui-fulldeps/plugin/lint-group-plugin-deny-cmdline.stderr b/tests/ui-fulldeps/plugin/lint-group-plugin-deny-cmdline.stderr
index 20486d596d9..6e17bbde021 100644
--- a/tests/ui-fulldeps/plugin/lint-group-plugin-deny-cmdline.stderr
+++ b/tests/ui-fulldeps/plugin/lint-group-plugin-deny-cmdline.stderr
@@ -13,6 +13,7 @@ LL | fn lintme() { }
    | ^^^^^^^^^^^^^^^
    |
    = note: `-D test-lint` implied by `-D lint-me`
+   = help: to override `-D lint-me` add `#[allow(test_lint)]`
 
 error: item is named 'pleaselintme'
   --> $DIR/lint-group-plugin-deny-cmdline.rs:12:1
@@ -21,6 +22,7 @@ LL | fn pleaselintme() { }
    | ^^^^^^^^^^^^^^^^^^^^^
    |
    = note: `-D please-lint` implied by `-D lint-me`
+   = help: to override `-D lint-me` add `#[allow(please_lint)]`
 
 error: aborting due to 2 previous errors; 1 warning emitted
 
diff --git a/tests/ui-fulldeps/plugin/lint-tool-cmdline-allow.stderr b/tests/ui-fulldeps/plugin/lint-tool-cmdline-allow.stderr
index b060e3a3e38..0e661795999 100644
--- a/tests/ui-fulldeps/plugin/lint-tool-cmdline-allow.stderr
+++ b/tests/ui-fulldeps/plugin/lint-tool-cmdline-allow.stderr
@@ -1,9 +1,12 @@
-warning: lint name `test_lint` is deprecated and does not have an effect anymore. Use: clippy::test_lint
+warning: lint name `test_lint` is deprecated and may not have an effect in the future.
    |
+   = help: change it to clippy::test_lint
    = note: requested on the command line with `-A test_lint`
+   = note: `#[warn(renamed_and_removed_lints)]` on by default
 
-warning: lint name `test_lint` is deprecated and does not have an effect anymore. Use: clippy::test_lint
+warning: lint name `test_lint` is deprecated and may not have an effect in the future.
    |
+   = help: change it to clippy::test_lint
    = note: requested on the command line with `-A test_lint`
 
 warning: item is named 'lintme'
@@ -22,8 +25,9 @@ LL | #![plugin(lint_tool_test)]
    |
    = note: `#[warn(deprecated)]` on by default
 
-warning: lint name `test_lint` is deprecated and does not have an effect anymore. Use: clippy::test_lint
+warning: lint name `test_lint` is deprecated and may not have an effect in the future.
    |
+   = help: change it to clippy::test_lint
    = note: requested on the command line with `-A test_lint`
 
 warning: 5 warnings emitted
diff --git a/tests/ui-fulldeps/pprust-expr-roundtrip.rs b/tests/ui-fulldeps/pprust-expr-roundtrip.rs
index ae375dfab90..541be7ebbc0 100644
--- a/tests/ui-fulldeps/pprust-expr-roundtrip.rs
+++ b/tests/ui-fulldeps/pprust-expr-roundtrip.rs
@@ -80,14 +80,20 @@ fn iter_exprs(depth: usize, f: &mut dyn FnMut(P<Expr>)) {
                 let seg = PathSegment::from_ident(Ident::from_str("x"));
                 iter_exprs(depth - 1, &mut |e| {
                     g(ExprKind::MethodCall(Box::new(MethodCall {
-                        seg: seg.clone(), receiver: e, args: thin_vec![make_x()], span: DUMMY_SP
-                    }))
-                )});
+                        seg: seg.clone(),
+                        receiver: e,
+                        args: thin_vec![make_x()],
+                        span: DUMMY_SP,
+                    })))
+                });
                 iter_exprs(depth - 1, &mut |e| {
                     g(ExprKind::MethodCall(Box::new(MethodCall {
-                        seg: seg.clone(), receiver: make_x(), args: thin_vec![e], span: DUMMY_SP
-                    }))
-                )});
+                        seg: seg.clone(),
+                        receiver: make_x(),
+                        args: thin_vec![e],
+                        span: DUMMY_SP,
+                    })))
+                });
             }
             2..=7 => {
                 let op = Spanned {
@@ -174,7 +180,7 @@ fn iter_exprs(depth: usize, f: &mut dyn FnMut(P<Expr>)) {
             18 => {
                 let pat =
                     P(Pat { id: DUMMY_NODE_ID, kind: PatKind::Wild, span: DUMMY_SP, tokens: None });
-                iter_exprs(depth - 1, &mut |e| g(ExprKind::Let(pat.clone(), e, DUMMY_SP)))
+                iter_exprs(depth - 1, &mut |e| g(ExprKind::Let(pat.clone(), e, DUMMY_SP, None)))
             }
             _ => panic!("bad counter value in iter_exprs"),
         }
diff --git a/tests/ui-fulldeps/session-diagnostic/diagnostic-derive-doc-comment-field.stderr b/tests/ui-fulldeps/session-diagnostic/diagnostic-derive-doc-comment-field.stderr
index 8c876213ae0..e014fc8c693 100644
--- a/tests/ui-fulldeps/session-diagnostic/diagnostic-derive-doc-comment-field.stderr
+++ b/tests/ui-fulldeps/session-diagnostic/diagnostic-derive-doc-comment-field.stderr
@@ -23,7 +23,7 @@ LL |     arg: NotIntoDiagnosticArg,
    |
    = help: normalized in stderr
 note: required by a bound in `Diagnostic::set_arg`
-  --> $COMPILER_DIR/rustc_errors/src/diagnostic.rs:960:5
+  --> $COMPILER_DIR/rustc_errors/src/diagnostic.rs:968:5
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui-fulldeps/stable-mir/compilation-result.rs b/tests/ui-fulldeps/stable-mir/compilation-result.rs
new file mode 100644
index 00000000000..23a9e2a064c
--- /dev/null
+++ b/tests/ui-fulldeps/stable-mir/compilation-result.rs
@@ -0,0 +1,77 @@
+// run-pass
+// Test StableMIR behavior when different results are given
+
+// ignore-stage1
+// ignore-cross-compile
+// ignore-remote
+// edition: 2021
+
+#![feature(rustc_private)]
+#![feature(assert_matches)]
+
+extern crate rustc_middle;
+extern crate rustc_smir;
+
+use rustc_middle::ty::TyCtxt;
+use rustc_smir::{rustc_internal, stable_mir};
+use std::io::Write;
+use std::ops::ControlFlow;
+
+/// This test will generate and analyze a dummy crate using the stable mir.
+/// For that, it will first write the dummy crate into a file.
+/// Then it will create a `StableMir` using custom arguments and then
+/// it will run the compiler.
+fn main() {
+    let path = "input_compilation_result_test.rs";
+    generate_input(&path).unwrap();
+    let args = vec!["rustc".to_string(), path.to_string()];
+    test_continue(args.clone());
+    test_break(args.clone());
+    test_failed(args.clone());
+    test_skipped(args);
+}
+
+fn test_continue(args: Vec<String>) {
+    let continue_fn = |_: TyCtxt| ControlFlow::Continue::<(), bool>(true);
+    let result = rustc_internal::StableMir::new(args, continue_fn).run();
+    assert_eq!(result, Ok(true));
+}
+
+fn test_break(args: Vec<String>) {
+    let continue_fn = |_: TyCtxt| ControlFlow::Break::<bool, i32>(false);
+    let result = rustc_internal::StableMir::new(args, continue_fn).run();
+    assert_eq!(result, Err(stable_mir::CompilerError::Interrupted(false)));
+}
+
+fn test_skipped(mut args: Vec<String>) {
+    args.push("--version".to_string());
+    let unreach_fn = |_: TyCtxt| -> ControlFlow<()> { unreachable!() };
+    let result = rustc_internal::StableMir::new(args, unreach_fn).run();
+    assert_eq!(result, Err(stable_mir::CompilerError::Skipped));
+}
+
+fn test_failed(mut args: Vec<String>) {
+    args.push("--cfg=broken".to_string());
+    let unreach_fn = |_: TyCtxt| -> ControlFlow<()> { unreachable!() };
+    let result = rustc_internal::StableMir::new(args, unreach_fn).run();
+    assert_eq!(result, Err(stable_mir::CompilerError::CompilationFailed));
+}
+
+fn generate_input(path: &str) -> std::io::Result<()> {
+    let mut file = std::fs::File::create(path)?;
+    write!(
+        file,
+        r#"
+    // This should trigger a compilation failure when enabled.
+    #[cfg(broken)]
+    mod broken_mod {{
+        fn call_invalid() {{
+            invalid_fn();
+        }}
+    }}
+
+    fn main() {{}}
+    "#
+    )?;
+    Ok(())
+}
diff --git a/tests/ui-fulldeps/stable-mir/crate-info.rs b/tests/ui-fulldeps/stable-mir/crate-info.rs
index f55d7d599f1..a11720c4b55 100644
--- a/tests/ui-fulldeps/stable-mir/crate-info.rs
+++ b/tests/ui-fulldeps/stable-mir/crate-info.rs
@@ -8,27 +8,26 @@
 
 #![feature(rustc_private)]
 #![feature(assert_matches)]
+#![feature(control_flow_enum)]
 
-extern crate rustc_driver;
 extern crate rustc_hir;
-extern crate rustc_interface;
 extern crate rustc_middle;
-extern crate rustc_session;
 extern crate rustc_smir;
 
-use rustc_driver::{Callbacks, Compilation, RunCompiler};
 use rustc_hir::def::DefKind;
-use rustc_interface::{interface, Queries};
 use rustc_middle::ty::TyCtxt;
-use rustc_session::EarlyErrorHandler;
-use rustc_smir::{rustc_internal, stable_mir};
+use rustc_smir::{
+    rustc_internal,
+    stable_mir::{self, fold::Foldable},
+};
 use std::assert_matches::assert_matches;
 use std::io::Write;
+use std::ops::ControlFlow;
 
 const CRATE_NAME: &str = "input";
 
 /// This function uses the Stable MIR APIs to get information about the test crate.
-fn test_stable_mir(tcx: TyCtxt<'_>) {
+fn test_stable_mir(tcx: TyCtxt<'_>) -> ControlFlow<()> {
     // Get the local crate using stable_mir API.
     let local = stable_mir::local_crate();
     assert_eq!(&local.name, CRATE_NAME);
@@ -114,6 +113,52 @@ fn test_stable_mir(tcx: TyCtxt<'_>) {
         stable_mir::mir::Terminator::Assert { .. } => {}
         other => panic!("{other:?}"),
     }
+
+    let monomorphic = get_item(tcx, &items, (DefKind::Fn, "monomorphic")).unwrap();
+    for block in monomorphic.body().blocks {
+        match &block.terminator {
+            stable_mir::mir::Terminator::Call { func, .. } => match func {
+                stable_mir::mir::Operand::Constant(c) => match &c.literal.literal {
+                    stable_mir::ty::ConstantKind::Allocated(alloc) => {
+                        assert!(alloc.bytes.is_empty());
+                        match c.literal.ty.kind() {
+                            stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::FnDef(
+                                def,
+                                mut args,
+                            )) => {
+                                let func = def.body();
+                                match func.locals[1]
+                                    .fold(&mut args)
+                                    .continue_value()
+                                    .unwrap()
+                                    .kind()
+                                {
+                                    stable_mir::ty::TyKind::RigidTy(
+                                        stable_mir::ty::RigidTy::Uint(_),
+                                    ) => {}
+                                    stable_mir::ty::TyKind::RigidTy(
+                                        stable_mir::ty::RigidTy::Tuple(_),
+                                    ) => {}
+                                    other => panic!("{other:?}"),
+                                }
+                            }
+                            other => panic!("{other:?}"),
+                        }
+                    }
+                    other => panic!("{other:?}"),
+                },
+                other => panic!("{other:?}"),
+            },
+            stable_mir::mir::Terminator::Return => {}
+            other => panic!("{other:?}"),
+        }
+    }
+
+    let foo_const = get_item(tcx, &items, (DefKind::Const, "FOO")).unwrap();
+    // Ensure we don't panic trying to get the body of a constant.
+    foo_const.body();
+
+    ControlFlow::Continue(())
 }
 
 // Use internal API to find a function in a crate.
@@ -130,8 +175,8 @@ fn get_item<'a>(
 
 /// This test will generate and analyze a dummy crate using the stable mir.
 /// For that, it will first write the dummy crate into a file.
-/// It will invoke the compiler using a custom Callback implementation, which will
-/// invoke Stable MIR APIs after the compiler has finished its analysis.
+/// Then it will create a `StableMir` using custom arguments and then
+/// it will run the compiler.
 fn main() {
     let path = "input.rs";
     generate_input(&path).unwrap();
@@ -142,29 +187,7 @@ fn main() {
         CRATE_NAME.to_string(),
         path.to_string(),
     ];
-    rustc_driver::catch_fatal_errors(|| {
-        RunCompiler::new(&args, &mut SMirCalls {}).run().unwrap();
-    })
-    .unwrap();
-}
-
-struct SMirCalls {}
-
-impl Callbacks for SMirCalls {
-    /// Called after analysis. Return value instructs the compiler whether to
-    /// continue the compilation afterwards (defaults to `Compilation::Continue`)
-    fn after_analysis<'tcx>(
-        &mut self,
-        _handler: &EarlyErrorHandler,
-        _compiler: &interface::Compiler,
-        queries: &'tcx Queries<'tcx>,
-    ) -> Compilation {
-        queries.global_ctxt().unwrap().enter(|tcx| {
-            rustc_smir::rustc_internal::run(tcx, || test_stable_mir(tcx));
-        });
-        // No need to keep going.
-        Compilation::Stop
-    }
+    rustc_internal::StableMir::new(args, test_stable_mir).run().unwrap();
 }
 
 fn generate_input(path: &str) -> std::io::Result<()> {
@@ -172,6 +195,18 @@ fn generate_input(path: &str) -> std::io::Result<()> {
     write!(
         file,
         r#"
+    pub const FOO: u32 = 1 + 2;
+
+    fn generic<T, const U: usize>(t: T) -> [(); U] {{
+        _ = t;
+        [(); U]
+    }}
+
+    pub fn monomorphic() {{
+        generic::<(), 5>(());
+        generic::<u32, 0>(45);
+    }}
+
     mod foo {{
         pub fn bar(i: i32) -> i64 {{
             i as i64
diff --git a/tests/ui/abi/compatibility.rs b/tests/ui/abi/compatibility.rs
new file mode 100644
index 00000000000..b3e75bb8233
--- /dev/null
+++ b/tests/ui/abi/compatibility.rs
@@ -0,0 +1,194 @@
+// check-pass
+#![feature(rustc_attrs, unsized_fn_params, transparent_unions)]
+#![allow(unused, improper_ctypes_definitions, internal_features)]
+use std::marker::PhantomData;
+use std::mem::ManuallyDrop;
+use std::num::NonZeroI32;
+use std::ptr::NonNull;
+
+// FIXME: a bunch of targets are broken in various ways.
+// Hence there are `cfg` throughout this test to disable parts of it on those targets.
+// sparc64: https://github.com/rust-lang/rust/issues/115336
+// mips64: https://github.com/rust-lang/rust/issues/115404
+// riscv64: https://github.com/rust-lang/rust/issues/115481
+// loongarch64: https://github.com/rust-lang/rust/issues/115509
+
+macro_rules! assert_abi_compatible {
+    ($name:ident, $t1:ty, $t2:ty) => {
+        mod $name {
+            use super::*;
+            // Declaring a `type` doesn't even check well-formedness, so we also declare a function.
+            fn check_wf(_x: $t1, _y: $t2) {}
+            // Test argument and return value, `Rust` and `C` ABIs.
+            #[rustc_abi(assert_eq)]
+            type TestRust = (fn($t1) -> $t1, fn($t2) -> $t2);
+            #[rustc_abi(assert_eq)]
+            type TestC = (extern "C" fn($t1) -> $t1, extern "C" fn($t2) -> $t2);
+        }
+    };
+}
+
+#[derive(Copy, Clone)]
+struct Zst;
+
+#[repr(C)]
+struct ReprC1<T: ?Sized>(T);
+#[repr(C)]
+struct ReprC2Int<T>(i32, T);
+#[repr(C)]
+struct ReprC2Float<T>(f32, T);
+#[repr(C)]
+struct ReprC4<T>(T, Vec<i32>, Zst, T);
+#[repr(C)]
+struct ReprC4Mixed<T>(T, f32, i32, T);
+#[repr(C)]
+enum ReprCEnum<T> {
+    Variant1,
+    Variant2(T),
+}
+#[repr(C)]
+union ReprCUnion<T> {
+    nothing: (),
+    something: ManuallyDrop<T>,
+}
+
+macro_rules! test_abi_compatible {
+    ($name:ident, $t1:ty, $t2:ty) => {
+        mod $name {
+            use super::*;
+            assert_abi_compatible!(plain, $t1, $t2);
+            // We also do some tests with differences in fields of `repr(C)` types.
+            assert_abi_compatible!(repr_c_1, ReprC1<$t1>, ReprC1<$t2>);
+            assert_abi_compatible!(repr_c_2_int, ReprC2Int<$t1>, ReprC2Int<$t2>);
+            assert_abi_compatible!(repr_c_2_float, ReprC2Float<$t1>, ReprC2Float<$t2>);
+            assert_abi_compatible!(repr_c_4, ReprC4<$t1>, ReprC4<$t2>);
+            assert_abi_compatible!(repr_c_4mixed, ReprC4Mixed<$t1>, ReprC4Mixed<$t2>);
+            assert_abi_compatible!(repr_c_enum, ReprCEnum<$t1>, ReprCEnum<$t2>);
+            assert_abi_compatible!(repr_c_union, ReprCUnion<$t1>, ReprCUnion<$t2>);
+        }
+    };
+}
+
+// Compatibility of pointers is probably de-facto guaranteed,
+// but that does not seem to be documented.
+test_abi_compatible!(ptr_mut, *const i32, *mut i32);
+test_abi_compatible!(ptr_pointee, *const i32, *const Vec<i32>);
+test_abi_compatible!(ref_mut, &i32, &mut i32);
+test_abi_compatible!(ref_ptr, &i32, *const i32);
+test_abi_compatible!(box_ptr, Box<i32>, *const i32);
+test_abi_compatible!(nonnull_ptr, NonNull<i32>, *const i32);
+test_abi_compatible!(fn_fn, fn(), fn(i32) -> i32);
+
+// Some further guarantees we will likely (have to) make.
+test_abi_compatible!(zst_unit, Zst, ());
+#[cfg(not(any(target_arch = "sparc64")))]
+test_abi_compatible!(zst_array, Zst, [u8; 0]);
+test_abi_compatible!(nonzero_int, NonZeroI32, i32);
+
+// `DispatchFromDyn` relies on ABI compatibility.
+// This is interesting since these types are not `repr(transparent)`.
+test_abi_compatible!(rc, std::rc::Rc<i32>, *mut i32);
+test_abi_compatible!(arc, std::sync::Arc<i32>, *mut i32);
+
+// `repr(transparent)` compatibility.
+#[repr(transparent)]
+struct Wrapper1<T: ?Sized>(T);
+#[repr(transparent)]
+struct Wrapper2<T: ?Sized>((), Zst, T);
+#[repr(transparent)]
+struct Wrapper3<T>(T, [u8; 0], PhantomData<u64>);
+#[repr(transparent)]
+union WrapperUnion<T> {
+    nothing: (),
+    something: ManuallyDrop<T>,
+}
+
+macro_rules! test_transparent {
+    ($name:ident, $t:ty) => {
+        mod $name {
+            use super::*;
+            test_abi_compatible!(wrap1, $t, Wrapper1<$t>);
+            test_abi_compatible!(wrap2, $t, Wrapper2<$t>);
+            test_abi_compatible!(wrap3, $t, Wrapper3<$t>);
+            #[cfg(not(any(target_arch = "riscv64", target_arch = "loongarch64")))]
+            test_abi_compatible!(wrap4, $t, WrapperUnion<$t>);
+        }
+    };
+}
+
+test_transparent!(simple, i32);
+test_transparent!(reference, &'static i32);
+test_transparent!(zst, Zst);
+test_transparent!(unit, ());
+test_transparent!(enum_, Option<i32>);
+test_transparent!(enum_niched, Option<&'static i32>);
+#[cfg(not(any(target_arch = "mips64", target_arch = "sparc64")))]
+mod tuples {
+    use super::*;
+    // mixing in some floats since they often get special treatment
+    test_transparent!(pair, (i32, f32));
+    // chosen to fit into 64bit
+    test_transparent!(triple, (i8, i16, f32));
+    // Pure-float types that are not ScalarPair seem to be tricky.
+    test_transparent!(triple_f32, (f32, f32, f32));
+    test_transparent!(triple_f64, (f64, f64, f64));
+    // and also something that's larger than 2 pointers
+    test_transparent!(tuple, (i32, f32, i64, f64));
+}
+// Some targets have special rules for arrays.
+#[cfg(not(any(target_arch = "mips64", target_arch = "sparc64")))]
+mod arrays {
+    use super::*;
+    test_transparent!(empty_array, [u32; 0]);
+    test_transparent!(empty_1zst_array, [u8; 0]);
+    test_transparent!(small_array, [i32; 2]); // chosen to fit into 64bit
+    test_transparent!(large_array, [i32; 16]);
+}
+
+// Some tests with unsized types (not all wrappers are compatible with that).
+macro_rules! test_transparent_unsized {
+    ($name:ident, $t:ty) => {
+        mod $name {
+            use super::*;
+            assert_abi_compatible!(wrap1, $t, Wrapper1<$t>);
+            assert_abi_compatible!(wrap1_reprc, ReprC1<$t>, ReprC1<Wrapper1<$t>>);
+            assert_abi_compatible!(wrap2, $t, Wrapper2<$t>);
+            assert_abi_compatible!(wrap2_reprc, ReprC1<$t>, ReprC1<Wrapper2<$t>>);
+        }
+    };
+}
+
+#[cfg(not(any(target_arch = "mips64", target_arch = "sparc64")))]
+mod unsized_ {
+    use super::*;
+    test_transparent_unsized!(str_, str);
+    test_transparent_unsized!(slice, [u8]);
+    test_transparent_unsized!(dyn_trait, dyn std::any::Any);
+}
+
+// RFC 3391 <https://rust-lang.github.io/rfcs/3391-result_ffi_guarantees.html>.
+macro_rules! test_nonnull {
+    ($name:ident, $t:ty) => {
+        mod $name {
+            use super::*;
+            test_abi_compatible!(option, Option<$t>, $t);
+            test_abi_compatible!(result_err_unit, Result<$t, ()>, $t);
+            test_abi_compatible!(result_ok_unit, Result<(), $t>, $t);
+            test_abi_compatible!(result_err_zst, Result<$t, Zst>, $t);
+            test_abi_compatible!(result_ok_zst, Result<Zst, $t>, $t);
+            test_abi_compatible!(result_err_arr, Result<$t, [i8; 0]>, $t);
+            test_abi_compatible!(result_ok_arr, Result<[i8; 0], $t>, $t);
+        }
+    }
+}
+
+test_nonnull!(ref_, &i32);
+test_nonnull!(mut_, &mut i32);
+test_nonnull!(ref_unsized, &[i32]);
+test_nonnull!(mut_unsized, &mut [i32]);
+test_nonnull!(fn_, fn());
+test_nonnull!(nonnull, NonNull<i32>);
+test_nonnull!(nonnull_unsized, NonNull<dyn std::fmt::Debug>);
+test_nonnull!(non_zero, NonZeroI32);
+
+fn main() {}
diff --git a/tests/ui/abi/debug.rs b/tests/ui/abi/debug.rs
index 13464be275e..77715ee4023 100644
--- a/tests/ui/abi/debug.rs
+++ b/tests/ui/abi/debug.rs
@@ -9,15 +9,45 @@
 #![feature(rustc_attrs)]
 #![crate_type = "lib"]
 
+struct S(u16);
+
 #[rustc_abi(debug)]
 fn test(_x: u8) -> bool { true } //~ ERROR: fn_abi
 
+#[rustc_abi(debug)]
+type TestFnPtr = fn(bool) -> u8; //~ ERROR: fn_abi
 
 #[rustc_abi(debug)]
 fn test_generic<T>(_x: *const T) { } //~ ERROR: fn_abi
 
-struct S(u16);
+#[rustc_abi(debug)]
+const C: () = (); //~ ERROR: can only be applied to
+
+impl S {
+    #[rustc_abi(debug)]
+    const C: () = (); //~ ERROR: can only be applied to
+}
+
 impl S {
     #[rustc_abi(debug)]
     fn assoc_test(&self) { } //~ ERROR: fn_abi
 }
+
+#[rustc_abi(assert_eq)]
+type TestAbiEq = (fn(bool), fn(bool));
+
+#[rustc_abi(assert_eq)]
+type TestAbiNe = (fn(u8), fn(u32)); //~ ERROR: ABIs are not compatible
+
+#[rustc_abi(assert_eq)]
+type TestAbiNeLarger = (fn([u8; 32]), fn([u32; 32])); //~ ERROR: ABIs are not compatible
+
+#[rustc_abi(assert_eq)]
+type TestAbiNeFloat = (fn(f32), fn(u32)); //~ ERROR: ABIs are not compatible
+
+// Sign matters on some targets (such as s390x), so let's make sure we never accept this.
+#[rustc_abi(assert_eq)]
+type TestAbiNeSign = (fn(i32), fn(u32)); //~ ERROR: ABIs are not compatible
+
+#[rustc_abi(assert_eq)]
+type TestAbiEqNonsense = (fn((str, str)), fn((str, str))); //~ ERROR: cannot be known at compilation time
diff --git a/tests/ui/abi/debug.stderr b/tests/ui/abi/debug.stderr
index 4f4ee3de4b8..00fc7d1ece1 100644
--- a/tests/ui/abi/debug.stderr
+++ b/tests/ui/abi/debug.stderr
@@ -1,4 +1,4 @@
-error: fn_abi_of_instance(test) = FnAbi {
+error: fn_abi_of(test) = FnAbi {
            args: [
                ArgAbi {
                    layout: TyAndLayout {
@@ -87,12 +87,106 @@ error: fn_abi_of_instance(test) = FnAbi {
            conv: Rust,
            can_unwind: $SOME_BOOL,
        }
-  --> $DIR/debug.rs:13:1
+  --> $DIR/debug.rs:15:1
    |
 LL | fn test(_x: u8) -> bool { true }
    | ^^^^^^^^^^^^^^^^^^^^^^^
 
-error: fn_abi_of_instance(test_generic) = FnAbi {
+error: fn_abi_of(TestFnPtr) = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: bool,
+                       layout: Layout {
+                           size: Size(1 bytes),
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: Int(
+                                       I8,
+                                       false,
+                                   ),
+                                   valid_range: 0..=1,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: Some(
+                               Niche {
+                                   offset: Size(0 bytes),
+                                   value: Int(
+                                       I8,
+                                       false,
+                                   ),
+                                   valid_range: 0..=1,
+                               },
+                           ),
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: Zext,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: u8,
+                   layout: Layout {
+                       size: Size(1 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Scalar(
+                           Initialized {
+                               value: Int(
+                                   I8,
+                                   false,
+                               ),
+                               valid_range: 0..=255,
+                           },
+                       ),
+                       fields: Primitive,
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Direct(
+                   ArgAttributes {
+                       regular: NoUndef,
+                       arg_ext: None,
+                       pointee_size: Size(0 bytes),
+                       pointee_align: None,
+                   },
+               ),
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+  --> $DIR/debug.rs:18:1
+   |
+LL | type TestFnPtr = fn(bool) -> u8;
+   | ^^^^^^^^^^^^^^
+
+error: fn_abi_of(test_generic) = FnAbi {
            args: [
                ArgAbi {
                    layout: TyAndLayout {
@@ -163,12 +257,616 @@ error: fn_abi_of_instance(test_generic) = FnAbi {
            conv: Rust,
            can_unwind: $SOME_BOOL,
        }
-  --> $DIR/debug.rs:17:1
+  --> $DIR/debug.rs:21:1
    |
 LL | fn test_generic<T>(_x: *const T) { }
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: fn_abi_of_instance(assoc_test) = FnAbi {
+error: `#[rustc_abi]` can only be applied to function items, type aliases, and associated functions
+  --> $DIR/debug.rs:24:1
+   |
+LL | const C: () = ();
+   | ^^^^^^^^^^^
+
+error: ABIs are not compatible
+       left ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: u8,
+                       layout: Layout {
+                           size: Size(1 bytes),
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: Int(
+                                       I8,
+                                       false,
+                                   ),
+                                   valid_range: 0..=255,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+       right ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: u32,
+                       layout: Layout {
+                           size: $SOME_SIZE,
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: Int(
+                                       I32,
+                                       false,
+                                   ),
+                                   valid_range: $FULL,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+  --> $DIR/debug.rs:40:1
+   |
+LL | type TestAbiNe = (fn(u8), fn(u32));
+   | ^^^^^^^^^^^^^^
+
+error: ABIs are not compatible
+       left ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: [u8; 32],
+                       layout: Layout {
+                           size: Size(32 bytes),
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Aggregate {
+                               sized: true,
+                           },
+                           fields: Array {
+                               stride: Size(1 bytes),
+                               count: 32,
+                           },
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Indirect {
+                       attrs: ArgAttributes {
+                           regular: NoAlias | NoCapture | NonNull | NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(32 bytes),
+                           pointee_align: Some(
+                               Align(1 bytes),
+                           ),
+                       },
+                       meta_attrs: None,
+                       on_stack: false,
+                   },
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+       right ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: [u32; 32],
+                       layout: Layout {
+                           size: Size(128 bytes),
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Aggregate {
+                               sized: true,
+                           },
+                           fields: Array {
+                               stride: Size(4 bytes),
+                               count: 32,
+                           },
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Indirect {
+                       attrs: ArgAttributes {
+                           regular: NoAlias | NoCapture | NonNull | NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(128 bytes),
+                           pointee_align: Some(
+                               Align(4 bytes),
+                           ),
+                       },
+                       meta_attrs: None,
+                       on_stack: false,
+                   },
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+  --> $DIR/debug.rs:43:1
+   |
+LL | type TestAbiNeLarger = (fn([u8; 32]), fn([u32; 32]));
+   | ^^^^^^^^^^^^^^^^^^^^
+
+error: ABIs are not compatible
+       left ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: f32,
+                       layout: Layout {
+                           size: $SOME_SIZE,
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: F32,
+                                   valid_range: $FULL,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+       right ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: u32,
+                       layout: Layout {
+                           size: $SOME_SIZE,
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: Int(
+                                       I32,
+                                       false,
+                                   ),
+                                   valid_range: $FULL,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+  --> $DIR/debug.rs:46:1
+   |
+LL | type TestAbiNeFloat = (fn(f32), fn(u32));
+   | ^^^^^^^^^^^^^^^^^^^
+
+error: ABIs are not compatible
+       left ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: i32,
+                       layout: Layout {
+                           size: $SOME_SIZE,
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: Int(
+                                       I32,
+                                       true,
+                                   ),
+                                   valid_range: $FULL,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+       right ABI = FnAbi {
+           args: [
+               ArgAbi {
+                   layout: TyAndLayout {
+                       ty: u32,
+                       layout: Layout {
+                           size: $SOME_SIZE,
+                           align: AbiAndPrefAlign {
+                               abi: $SOME_ALIGN,
+                               pref: $SOME_ALIGN,
+                           },
+                           abi: Scalar(
+                               Initialized {
+                                   value: Int(
+                                       I32,
+                                       false,
+                                   ),
+                                   valid_range: $FULL,
+                               },
+                           ),
+                           fields: Primitive,
+                           largest_niche: None,
+                           variants: Single {
+                               index: 0,
+                           },
+                           max_repr_align: None,
+                           unadjusted_abi_align: $SOME_ALIGN,
+                       },
+                   },
+                   mode: Direct(
+                       ArgAttributes {
+                           regular: NoUndef,
+                           arg_ext: None,
+                           pointee_size: Size(0 bytes),
+                           pointee_align: None,
+                       },
+                   ),
+               },
+           ],
+           ret: ArgAbi {
+               layout: TyAndLayout {
+                   ty: (),
+                   layout: Layout {
+                       size: Size(0 bytes),
+                       align: AbiAndPrefAlign {
+                           abi: $SOME_ALIGN,
+                           pref: $SOME_ALIGN,
+                       },
+                       abi: Aggregate {
+                           sized: true,
+                       },
+                       fields: Arbitrary {
+                           offsets: [],
+                           memory_index: [],
+                       },
+                       largest_niche: None,
+                       variants: Single {
+                           index: 0,
+                       },
+                       max_repr_align: None,
+                       unadjusted_abi_align: $SOME_ALIGN,
+                   },
+               },
+               mode: Ignore,
+           },
+           c_variadic: false,
+           fixed_count: 1,
+           conv: Rust,
+           can_unwind: $SOME_BOOL,
+       }
+  --> $DIR/debug.rs:50:1
+   |
+LL | type TestAbiNeSign = (fn(i32), fn(u32));
+   | ^^^^^^^^^^^^^^^^^^
+
+error[E0277]: the size for values of type `str` cannot be known at compilation time
+  --> $DIR/debug.rs:53:46
+   |
+LL | type TestAbiEqNonsense = (fn((str, str)), fn((str, str)));
+   |                                              ^^^^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `str`
+   = note: only the last element of a tuple may have a dynamically sized type
+
+error: `#[rustc_abi]` can only be applied to function items, type aliases, and associated functions
+  --> $DIR/debug.rs:28:5
+   |
+LL |     const C: () = ();
+   |     ^^^^^^^^^^^
+
+error: fn_abi_of(assoc_test) = FnAbi {
            args: [
                ArgAbi {
                    layout: TyAndLayout {
@@ -251,10 +949,11 @@ error: fn_abi_of_instance(assoc_test) = FnAbi {
            conv: Rust,
            can_unwind: $SOME_BOOL,
        }
-  --> $DIR/debug.rs:22:5
+  --> $DIR/debug.rs:33:5
    |
 LL |     fn assoc_test(&self) { }
    |     ^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 3 previous errors
+error: aborting due to 11 previous errors
 
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/argument-suggestions/two-mismatch-notes.stderr b/tests/ui/argument-suggestions/two-mismatch-notes.stderr
index 38cf23ddc38..70cc60255c7 100644
--- a/tests/ui/argument-suggestions/two-mismatch-notes.stderr
+++ b/tests/ui/argument-suggestions/two-mismatch-notes.stderr
@@ -11,7 +11,6 @@ LL |     foo(f, w);
    |         ^
    = note: expected fn pointer `fn(i32)`
                  found fn item `fn(u32) {f}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 note: expected `Wrapper<i32>`, found `Wrapper<isize>`
   --> $DIR/two-mismatch-notes.rs:10:12
    |
diff --git a/tests/ui/associated-consts/associated-const-array-len.stderr b/tests/ui/associated-consts/associated-const-array-len.stderr
index 0e0dec35b53..e3db45810fd 100644
--- a/tests/ui/associated-consts/associated-const-array-len.stderr
+++ b/tests/ui/associated-consts/associated-const-array-len.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `i32: Foo` is not satisfied
    |
 LL | const X: [i32; <i32 as Foo>::ID] = [0, 1, 2];
    |                 ^^^ the trait `Foo` is not implemented for `i32`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/associated-const-array-len.rs:1:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-consts/double-elided.rs b/tests/ui/associated-consts/double-elided.rs
new file mode 100644
index 00000000000..fd0317781bb
--- /dev/null
+++ b/tests/ui/associated-consts/double-elided.rs
@@ -0,0 +1,12 @@
+struct S;
+
+impl S {
+    const C: &&str = &"";
+    //~^ WARN `&` without an explicit lifetime name cannot be used here
+    //~| WARN this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+    //~| WARN `&` without an explicit lifetime name cannot be used here
+    //~| WARN this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+    //~| ERROR in type `&&str`, reference has a longer lifetime than the data it references
+}
+
+fn main() {}
diff --git a/tests/ui/associated-consts/double-elided.stderr b/tests/ui/associated-consts/double-elided.stderr
new file mode 100644
index 00000000000..ba4e6a23e27
--- /dev/null
+++ b/tests/ui/associated-consts/double-elided.stderr
@@ -0,0 +1,47 @@
+warning: `&` without an explicit lifetime name cannot be used here
+  --> $DIR/double-elided.rs:4:14
+   |
+LL |     const C: &&str = &"";
+   |              ^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #115010 <https://github.com/rust-lang/rust/issues/115010>
+   = note: `#[warn(elided_lifetimes_in_associated_constant)]` on by default
+help: use the `'static` lifetime
+   |
+LL |     const C: &'static &str = &"";
+   |               +++++++
+
+warning: `&` without an explicit lifetime name cannot be used here
+  --> $DIR/double-elided.rs:4:15
+   |
+LL |     const C: &&str = &"";
+   |               ^
+   |
+   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
+   = note: for more information, see issue #115010 <https://github.com/rust-lang/rust/issues/115010>
+help: use the `'static` lifetime
+   |
+LL |     const C: &&'static str = &"";
+   |                +++++++
+
+error[E0491]: in type `&&str`, reference has a longer lifetime than the data it references
+  --> $DIR/double-elided.rs:4:5
+   |
+LL |     const C: &&str = &"";
+   |     ^^^^^^^^^^^^^^^^^^^^^
+   |
+note: the pointer is valid for the anonymous lifetime as defined here
+  --> $DIR/double-elided.rs:4:14
+   |
+LL |     const C: &&str = &"";
+   |              ^
+note: but the referenced data is only valid for the anonymous lifetime as defined here
+  --> $DIR/double-elided.rs:4:14
+   |
+LL |     const C: &&str = &"";
+   |              ^
+
+error: aborting due to previous error; 2 warnings emitted
+
+For more information about this error, try `rustc --explain E0491`.
diff --git a/tests/ui/associated-consts/issue-105330.stderr b/tests/ui/associated-consts/issue-105330.stderr
index e9fe3a5e514..927422fa8dc 100644
--- a/tests/ui/associated-consts/issue-105330.stderr
+++ b/tests/ui/associated-consts/issue-105330.stderr
@@ -51,6 +51,11 @@ error[E0277]: the trait bound `Demo: TraitWAssocConst` is not satisfied
 LL |     foo::<Demo>()();
    |           ^^^^ the trait `TraitWAssocConst` is not implemented for `Demo`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-105330.rs:1:1
+   |
+LL | pub trait TraitWAssocConst {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
 note: required by a bound in `foo`
   --> $DIR/issue-105330.rs:11:11
    |
@@ -87,6 +92,11 @@ error[E0277]: the trait bound `Demo: TraitWAssocConst` is not satisfied
 LL |     foo::<Demo>();
    |           ^^^^ the trait `TraitWAssocConst` is not implemented for `Demo`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-105330.rs:1:1
+   |
+LL | pub trait TraitWAssocConst {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
 note: required by a bound in `foo`
   --> $DIR/issue-105330.rs:11:11
    |
diff --git a/tests/ui/associated-inherent-types/private-in-public.rs b/tests/ui/associated-inherent-types/private-in-public.rs
index e9e189f95c9..7797a2a16a5 100644
--- a/tests/ui/associated-inherent-types/private-in-public.rs
+++ b/tests/ui/associated-inherent-types/private-in-public.rs
@@ -1,26 +1,15 @@
+// check-pass
+
 #![feature(inherent_associated_types)]
-#![feature(type_privacy_lints)]
 #![allow(incomplete_features)]
 #![crate_type = "lib"]
-#![deny(private_in_public)]
-#![warn(private_interfaces)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
 
 pub type PubAlias0 = PubTy::PrivAssocTy;
-//~^ ERROR private associated type `PubTy::PrivAssocTy` in public interface (error E0446)
-//~| WARNING this was previously accepted
-//~| WARNING associated type `PubTy::PrivAssocTy` is more private than the item `PubAlias0`
+//~^ WARNING associated type `PubTy::PrivAssocTy` is more private than the item `PubAlias0`
 pub type PubAlias1 = PrivTy::PubAssocTy;
-//~^ ERROR private type `PrivTy` in public interface (error E0446)
-//~| WARNING this was previously accepted
-//~| WARNING type `PrivTy` is more private than the item `PubAlias1`
+//~^ WARNING type `PrivTy` is more private than the item `PubAlias1`
 pub type PubAlias2 = PubTy::PubAssocTy<PrivTy>;
-//~^ ERROR private type `PrivTy` in public interface (error E0446)
-//~| WARNING this was previously accepted
-//~| WARNING type `PrivTy` is more private than the item `PubAlias2`
+//~^ WARNING type `PrivTy` is more private than the item `PubAlias2`
 
 pub struct PubTy;
 impl PubTy {
diff --git a/tests/ui/associated-inherent-types/private-in-public.stderr b/tests/ui/associated-inherent-types/private-in-public.stderr
index 65d187c1bcd..076bbd78ae9 100644
--- a/tests/ui/associated-inherent-types/private-in-public.stderr
+++ b/tests/ui/associated-inherent-types/private-in-public.stderr
@@ -1,75 +1,39 @@
-error: private associated type `PubTy::PrivAssocTy` in public interface (error E0446)
-  --> $DIR/private-in-public.rs:12:1
-   |
-LL | pub type PubAlias0 = PubTy::PrivAssocTy;
-   | ^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-note: the lint level is defined here
-  --> $DIR/private-in-public.rs:5:9
-   |
-LL | #![deny(private_in_public)]
-   |         ^^^^^^^^^^^^^^^^^
-
 warning: associated type `PubTy::PrivAssocTy` is more private than the item `PubAlias0`
-  --> $DIR/private-in-public.rs:12:1
+  --> $DIR/private-in-public.rs:7:1
    |
 LL | pub type PubAlias0 = PubTy::PrivAssocTy;
    | ^^^^^^^^^^^^^^^^^^ type alias `PubAlias0` is reachable at visibility `pub`
    |
 note: but associated type `PubTy::PrivAssocTy` is only usable at visibility `pub(crate)`
-  --> $DIR/private-in-public.rs:27:5
+  --> $DIR/private-in-public.rs:16:5
    |
 LL |     type PrivAssocTy = ();
    |     ^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/private-in-public.rs:6:9
-   |
-LL | #![warn(private_interfaces)]
-   |         ^^^^^^^^^^^^^^^^^^
-
-error: private type `PrivTy` in public interface (error E0446)
-  --> $DIR/private-in-public.rs:16:1
-   |
-LL | pub type PubAlias1 = PrivTy::PubAssocTy;
-   | ^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+   = note: `#[warn(private_interfaces)]` on by default
 
 warning: type `PrivTy` is more private than the item `PubAlias1`
-  --> $DIR/private-in-public.rs:16:1
+  --> $DIR/private-in-public.rs:9:1
    |
 LL | pub type PubAlias1 = PrivTy::PubAssocTy;
    | ^^^^^^^^^^^^^^^^^^ type alias `PubAlias1` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/private-in-public.rs:31:1
+  --> $DIR/private-in-public.rs:20:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
 
-error: private type `PrivTy` in public interface (error E0446)
-  --> $DIR/private-in-public.rs:20:1
-   |
-LL | pub type PubAlias2 = PubTy::PubAssocTy<PrivTy>;
-   | ^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-
 warning: type `PrivTy` is more private than the item `PubAlias2`
-  --> $DIR/private-in-public.rs:20:1
+  --> $DIR/private-in-public.rs:11:1
    |
 LL | pub type PubAlias2 = PubTy::PubAssocTy<PrivTy>;
    | ^^^^^^^^^^^^^^^^^^ type alias `PubAlias2` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/private-in-public.rs:31:1
+  --> $DIR/private-in-public.rs:20:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
 
-error: aborting due to 3 previous errors; 3 warnings emitted
+warning: 3 warnings emitted
 
diff --git a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
index c2da4f57696..edce1045e24 100644
--- a/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
+++ b/tests/ui/associated-type-bounds/return-type-notation/basic.without.stderr
@@ -13,12 +13,12 @@ error: future cannot be sent between threads safely
 LL |     is_send(foo::<T>());
    |             ^^^^^^^^^^ future returned by `foo` is not `Send`
    |
-   = help: within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `impl Future<Output = Result<(), ()>>`
+   = help: within `impl Future<Output = Result<(), ()>>`, the trait `Send` is not implemented for `impl Future<Output = Result<(), ()>> { <T as Foo>::method() }`
 note: future is not `Send` as it awaits another future which is not `Send`
   --> $DIR/basic.rs:13:5
    |
 LL |     T::method().await?;
-   |     ^^^^^^^^^^^ await occurs here on type `impl Future<Output = Result<(), ()>>`, which is not `Send`
+   |     ^^^^^^^^^^^ await occurs here on type `impl Future<Output = Result<(), ()>> { <T as Foo>::method() }`, which is not `Send`
 note: required by a bound in `is_send`
   --> $DIR/basic.rs:17:20
    |
diff --git a/tests/ui/associated-type-bounds/suggest-removing-impl.rs b/tests/ui/associated-type-bounds/suggest-removing-impl.rs
new file mode 100644
index 00000000000..242cd85727d
--- /dev/null
+++ b/tests/ui/associated-type-bounds/suggest-removing-impl.rs
@@ -0,0 +1,14 @@
+trait Tr {
+    type Assoc: impl Sized;
+    //~^ ERROR expected a trait, found type
+    //~| HELP use the trait bounds directly
+
+    fn fn_with_generics<T>()
+    where
+        T: impl Sized
+        //~^ ERROR expected a trait, found type
+        //~| HELP use the trait bounds directly
+    {}
+}
+
+fn main() {}
diff --git a/tests/ui/associated-type-bounds/suggest-removing-impl.stderr b/tests/ui/associated-type-bounds/suggest-removing-impl.stderr
new file mode 100644
index 00000000000..875b2db6deb
--- /dev/null
+++ b/tests/ui/associated-type-bounds/suggest-removing-impl.stderr
@@ -0,0 +1,26 @@
+error: expected a trait, found type
+  --> $DIR/suggest-removing-impl.rs:2:17
+   |
+LL |     type Assoc: impl Sized;
+   |                 ^^^^^^^^^^
+   |
+help: use the trait bounds directly
+   |
+LL -     type Assoc: impl Sized;
+LL +     type Assoc: Sized;
+   |
+
+error: expected a trait, found type
+  --> $DIR/suggest-removing-impl.rs:8:12
+   |
+LL |         T: impl Sized
+   |            ^^^^^^^^^^
+   |
+help: use the trait bounds directly
+   |
+LL -         T: impl Sized
+LL +         T: Sized
+   |
+
+error: aborting due to 2 previous errors
+
diff --git a/tests/ui/associated-types/associated-types-ICE-when-projecting-out-of-err.stderr b/tests/ui/associated-types/associated-types-ICE-when-projecting-out-of-err.stderr
index 8c3463a2832..fbc4ccd4cf4 100644
--- a/tests/ui/associated-types/associated-types-ICE-when-projecting-out-of-err.stderr
+++ b/tests/ui/associated-types/associated-types-ICE-when-projecting-out-of-err.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(): Add<A>` is not satisfied
    |
 LL |     r = r + a;
    |           ^ the trait `Add<A>` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/associated-types-ICE-when-projecting-out-of-err.rs:15:1
+   |
+LL | trait Add<RHS=Self> {
+   | ^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-types/associated-types-no-suitable-supertrait.stderr b/tests/ui/associated-types/associated-types-no-suitable-supertrait.stderr
index bd3ee2abd2c..b3f2e16ba0d 100644
--- a/tests/ui/associated-types/associated-types-no-suitable-supertrait.stderr
+++ b/tests/ui/associated-types/associated-types-no-suitable-supertrait.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(T, U): Get` is not satisfied
    |
 LL |     fn uhoh<U:Get>(&self, foo: U, bar: <(T, U) as Get>::Value) {}
    |                                        ^^^^^^^^^^^^^^^^^^^^^^ the trait `Get` is not implemented for `(T, U)`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/associated-types-no-suitable-supertrait.rs:12:1
+   |
+LL | trait Get {
+   | ^^^^^^^^^
 
 error[E0277]: the trait bound `Self: Get` is not satisfied
   --> $DIR/associated-types-no-suitable-supertrait.rs:17:40
diff --git a/tests/ui/associated-types/defaults-suitability.stderr b/tests/ui/associated-types/defaults-suitability.stderr
index 4b2094691f8..0a8ad0f89e2 100644
--- a/tests/ui/associated-types/defaults-suitability.stderr
+++ b/tests/ui/associated-types/defaults-suitability.stderr
@@ -58,6 +58,11 @@ error[E0277]: the trait bound `(): Foo<Self>` is not satisfied
 LL |     type Assoc: Foo<Self> = ();
    |                             ^^ the trait `Foo<Self>` is not implemented for `()`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/defaults-suitability.rs:27:1
+   |
+LL | trait Foo<T> {
+   | ^^^^^^^^^^^^
 note: required by a bound in `Bar::Assoc`
   --> $DIR/defaults-suitability.rs:34:17
    |
diff --git a/tests/ui/associated-types/issue-23595-2.stderr b/tests/ui/associated-types/issue-23595-2.stderr
index dded673f6ee..73effa9f955 100644
--- a/tests/ui/associated-types/issue-23595-2.stderr
+++ b/tests/ui/associated-types/issue-23595-2.stderr
@@ -2,7 +2,7 @@ error[E0220]: associated type `anything_here_kills_it` not found for `Self`
   --> $DIR/issue-23595-2.rs:6:22
    |
 LL |     type B = C<Self::anything_here_kills_it>;
-   |                      ^^^^^^^^^^^^^^^^^^^^^^ associated type `anything_here_kills_it` not found
+   |                      ^^^^^^^^^^^^^^^^^^^^^^ help: `Self` has the following associated type: `B`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-32323.rs b/tests/ui/associated-types/issue-32323.rs
index 5078f5523c9..5078f5523c9 100644
--- a/tests/ui/issues/issue-32323.rs
+++ b/tests/ui/associated-types/issue-32323.rs
diff --git a/tests/ui/issues/issue-32323.stderr b/tests/ui/associated-types/issue-32323.stderr
index 8212c607e11..8212c607e11 100644
--- a/tests/ui/issues/issue-32323.stderr
+++ b/tests/ui/associated-types/issue-32323.stderr
diff --git a/tests/ui/associated-types/issue-59324.stderr b/tests/ui/associated-types/issue-59324.stderr
index a84b599b52b..266e22d4726 100644
--- a/tests/ui/associated-types/issue-59324.stderr
+++ b/tests/ui/associated-types/issue-59324.stderr
@@ -48,6 +48,12 @@ error[E0277]: the trait bound `(): Foo` is not satisfied
    |
 LL | fn with_factory<H>(factory: dyn ThriftService<()>) {}
    |                             ^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-59324.rs:3:1
+   |
+LL | pub trait Foo: NotFoo {
+   | ^^^^^^^^^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `Bug: Foo` is not satisfied
   --> $DIR/issue-59324.rs:19:10
diff --git a/tests/ui/associated-types/issue-64855.stderr b/tests/ui/associated-types/issue-64855.stderr
index 6ad795c1117..f1016f0e3a1 100644
--- a/tests/ui/associated-types/issue-64855.stderr
+++ b/tests/ui/associated-types/issue-64855.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `Bar<T>: Foo` is not satisfied
    |
 LL | pub struct Bar<T>(<Self as Foo>::Type) where Self: ;
    |                   ^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `Bar<T>`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-64855.rs:1:1
+   |
+LL | pub trait Foo {
+   | ^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/associated-types/issue-85103-layout-debug.rs b/tests/ui/associated-types/issue-85103-layout-debug.rs
new file mode 100644
index 00000000000..77c9876ffa5
--- /dev/null
+++ b/tests/ui/associated-types/issue-85103-layout-debug.rs
@@ -0,0 +1,9 @@
+#![feature(rustc_attrs)]
+
+use std::borrow::Cow;
+
+#[rustc_layout(debug)]
+type Edges<'a, E> = Cow<'a, [E]>;
+//~^ the trait bound `[E]: ToOwned` is not satisfied
+
+fn main() {}
diff --git a/tests/ui/associated-types/issue-85103-layout-debug.stderr b/tests/ui/associated-types/issue-85103-layout-debug.stderr
new file mode 100644
index 00000000000..0bdea10ba47
--- /dev/null
+++ b/tests/ui/associated-types/issue-85103-layout-debug.stderr
@@ -0,0 +1,16 @@
+error[E0277]: the trait bound `[E]: ToOwned` is not satisfied
+  --> $DIR/issue-85103-layout-debug.rs:6:21
+   |
+LL | type Edges<'a, E> = Cow<'a, [E]>;
+   |                     ^^^^^^^^^^^^ the trait `ToOwned` is not implemented for `[E]`
+   |
+note: required by a bound in `Cow`
+  --> $SRC_DIR/alloc/src/borrow.rs:LL:COL
+help: consider introducing a `where` clause, but there might be an alternative better way to express this requirement
+   |
+LL | type Edges<'a, E> where [E]: ToOwned = Cow<'a, [E]>;
+   |                   ++++++++++++++++++
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/associated-types/issue-85103.rs b/tests/ui/associated-types/issue-85103.rs
deleted file mode 100644
index 9c6a419e9f7..00000000000
--- a/tests/ui/associated-types/issue-85103.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-#![feature(rustc_attrs)]
-
-use std::borrow::Cow;
-
-#[rustc_layout(debug)]
-type Edges<'a, E> = Cow<'a, [E]>;
-//~^ 6:1: 6:18: unable to determine layout for `<[E] as ToOwned>::Owned` because `<[E] as ToOwned>::Owned` cannot be normalized
-
-fn main() {}
diff --git a/tests/ui/associated-types/issue-85103.stderr b/tests/ui/associated-types/issue-85103.stderr
deleted file mode 100644
index 17f7148074c..00000000000
--- a/tests/ui/associated-types/issue-85103.stderr
+++ /dev/null
@@ -1,8 +0,0 @@
-error: unable to determine layout for `<[E] as ToOwned>::Owned` because `<[E] as ToOwned>::Owned` cannot be normalized
-  --> $DIR/issue-85103.rs:6:1
-   |
-LL | type Edges<'a, E> = Cow<'a, [E]>;
-   | ^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error
-
diff --git a/tests/ui/associated-types/point-at-type-on-obligation-failure-2.stderr b/tests/ui/associated-types/point-at-type-on-obligation-failure-2.stderr
index 3b4689e08cc..056d9201b4a 100644
--- a/tests/ui/associated-types/point-at-type-on-obligation-failure-2.stderr
+++ b/tests/ui/associated-types/point-at-type-on-obligation-failure-2.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `bool: Bar` is not satisfied
 LL |     type Assoc = bool;
    |                  ^^^^ the trait `Bar` is not implemented for `bool`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/point-at-type-on-obligation-failure-2.rs:1:1
+   |
+LL | trait Bar {}
+   | ^^^^^^^^^
 note: required by a bound in `Foo::Assoc`
   --> $DIR/point-at-type-on-obligation-failure-2.rs:4:17
    |
@@ -16,6 +21,11 @@ error[E0277]: the trait bound `bool: Bar` is not satisfied
 LL |     type Assoc = bool;
    |                  ^^^^ the trait `Bar` is not implemented for `bool`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/point-at-type-on-obligation-failure-2.rs:1:1
+   |
+LL | trait Bar {}
+   | ^^^^^^^^^
 note: required by a bound in `Baz::Assoc`
   --> $DIR/point-at-type-on-obligation-failure-2.rs:13:18
    |
@@ -31,6 +41,11 @@ error[E0277]: the trait bound `bool: Bar` is not satisfied
 LL |     type Assoc = bool;
    |                  ^^^^ the trait `Bar` is not implemented for `bool`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/point-at-type-on-obligation-failure-2.rs:1:1
+   |
+LL | trait Bar {}
+   | ^^^^^^^^^
 note: required by a bound in `Bat::Assoc`
   --> $DIR/point-at-type-on-obligation-failure-2.rs:24:27
    |
diff --git a/tests/ui/async-await/async-is-unwindsafe.stderr b/tests/ui/async-await/async-is-unwindsafe.stderr
index 5d29325c827..c855e902ba9 100644
--- a/tests/ui/async-await/async-is-unwindsafe.stderr
+++ b/tests/ui/async-await/async-is-unwindsafe.stderr
@@ -15,7 +15,7 @@ LL | |     });
    |       within this `[async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6]`
    |
    = help: within `[async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6]`, the trait `UnwindSafe` is not implemented for `&mut Context<'_>`
-   = note: `UnwindSafe` is implemented for `&std::task::Context<'_>`, but not for `&mut std::task::Context<'_>`
+   = note: `UnwindSafe` is implemented for `&Context<'_>`, but not for `&mut Context<'_>`
 note: future does not implement `UnwindSafe` as this value is used across an await
   --> $DIR/async-is-unwindsafe.rs:25:18
    |
diff --git a/tests/ui/async-await/in-trait/async-example-desugared-extra.rs b/tests/ui/async-await/in-trait/async-example-desugared-extra.rs
index 81e1e59a362..3505690f1ec 100644
--- a/tests/ui/async-await/in-trait/async-example-desugared-extra.rs
+++ b/tests/ui/async-await/in-trait/async-example-desugared-extra.rs
@@ -2,14 +2,14 @@
 // edition: 2021
 
 #![feature(async_fn_in_trait)]
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 #![allow(incomplete_features)]
 
 use std::future::Future;
 use std::pin::Pin;
 use std::task::Poll;
 
-trait MyTrait {
+pub trait MyTrait {
     async fn foo(&self) -> i32;
 }
 
@@ -27,8 +27,7 @@ impl Future for MyFuture {
 }
 
 impl MyTrait for i32 {
-    // FIXME: this should eventually require `#[refine]` to compile, because it also provides
-    // `Clone`.
+    #[expect(refining_impl_trait)]
     fn foo(&self) -> impl Future<Output = i32> + Clone {
         MyFuture(*self)
     }
diff --git a/tests/ui/async-await/in-trait/async-example-desugared.rs b/tests/ui/async-await/in-trait/async-example-desugared.rs
index fb92ec78674..0a5023176fe 100644
--- a/tests/ui/async-await/in-trait/async-example-desugared.rs
+++ b/tests/ui/async-await/in-trait/async-example-desugared.rs
@@ -12,7 +12,7 @@ trait MyTrait {
 }
 
 impl MyTrait for i32 {
-    fn foo(&self) -> impl Future<Output = i32> + '_ {
+    fn foo(&self) -> impl Future<Output = i32> {
         async { *self }
     }
 }
diff --git a/tests/ui/async-await/large_moves.attribute.stderr b/tests/ui/async-await/large_moves.attribute.stderr
index ef9fd78ffe3..1d1999462ce 100644
--- a/tests/ui/async-await/large_moves.attribute.stderr
+++ b/tests/ui/async-await/large_moves.attribute.stderr
@@ -1,5 +1,5 @@
 error: moving 10024 bytes
-  --> $DIR/large_moves.rs:19:14
+  --> $DIR/large_moves.rs:21:14
    |
 LL |     let z = (x, 42);
    |              ^ value moved from here
@@ -12,12 +12,28 @@ LL | #![deny(large_assignments)]
    |         ^^^^^^^^^^^^^^^^^
 
 error: moving 10024 bytes
-  --> $DIR/large_moves.rs:20:13
+  --> $DIR/large_moves.rs:22:13
    |
 LL |     let a = z.0;
    |             ^^^ value moved from here
    |
    = note: The current maximum size is 1000, but it can be customized with the move_size_limit attribute: `#![move_size_limit = "..."]`
 
-error: aborting due to 2 previous errors
+error: moving 9999 bytes
+  --> $DIR/large_moves.rs:27:13
+   |
+LL |     let _ = NotBox::new([0; 9999]);
+   |             ^^^^^^^^^^^^^^^^^^^^^^ value moved from here
+   |
+   = note: The current maximum size is 1000, but it can be customized with the move_size_limit attribute: `#![move_size_limit = "..."]`
+
+error: moving 9999 bytes
+  --> $DIR/large_moves.rs:41:13
+   |
+LL |             data,
+   |             ^^^^ value moved from here
+   |
+   = note: The current maximum size is 1000, but it can be customized with the move_size_limit attribute: `#![move_size_limit = "..."]`
+
+error: aborting due to 4 previous errors
 
diff --git a/tests/ui/async-await/large_moves.option.stderr b/tests/ui/async-await/large_moves.option.stderr
index ef9fd78ffe3..1d1999462ce 100644
--- a/tests/ui/async-await/large_moves.option.stderr
+++ b/tests/ui/async-await/large_moves.option.stderr
@@ -1,5 +1,5 @@
 error: moving 10024 bytes
-  --> $DIR/large_moves.rs:19:14
+  --> $DIR/large_moves.rs:21:14
    |
 LL |     let z = (x, 42);
    |              ^ value moved from here
@@ -12,12 +12,28 @@ LL | #![deny(large_assignments)]
    |         ^^^^^^^^^^^^^^^^^
 
 error: moving 10024 bytes
-  --> $DIR/large_moves.rs:20:13
+  --> $DIR/large_moves.rs:22:13
    |
 LL |     let a = z.0;
    |             ^^^ value moved from here
    |
    = note: The current maximum size is 1000, but it can be customized with the move_size_limit attribute: `#![move_size_limit = "..."]`
 
-error: aborting due to 2 previous errors
+error: moving 9999 bytes
+  --> $DIR/large_moves.rs:27:13
+   |
+LL |     let _ = NotBox::new([0; 9999]);
+   |             ^^^^^^^^^^^^^^^^^^^^^^ value moved from here
+   |
+   = note: The current maximum size is 1000, but it can be customized with the move_size_limit attribute: `#![move_size_limit = "..."]`
+
+error: moving 9999 bytes
+  --> $DIR/large_moves.rs:41:13
+   |
+LL |             data,
+   |             ^^^^ value moved from here
+   |
+   = note: The current maximum size is 1000, but it can be customized with the move_size_limit attribute: `#![move_size_limit = "..."]`
+
+error: aborting due to 4 previous errors
 
diff --git a/tests/ui/async-await/large_moves.rs b/tests/ui/async-await/large_moves.rs
index faf6c66c612..62b12104694 100644
--- a/tests/ui/async-await/large_moves.rs
+++ b/tests/ui/async-await/large_moves.rs
@@ -9,6 +9,8 @@
 // edition:2018
 // compile-flags: -Zmir-opt-level=0
 
+use std::{sync::Arc, rc::Rc};
+
 fn main() {
     let x = async {
         let y = [0; 9999];
@@ -19,8 +21,24 @@ fn main() {
     let z = (x, 42); //~ ERROR large_assignments
     let a = z.0; //~ ERROR large_assignments
     let b = z.1;
+    let _ = Arc::new([0; 9999]); // OK!
+    let _ = Box::new([0; 9999]); // OK!
+    let _ = Rc::new([0; 9999]); // OK!
+    let _ = NotBox::new([0; 9999]); //~ ERROR large_assignments
 }
 
 async fn thing(y: &[u8]) {
     dbg!(y);
 }
+
+struct NotBox {
+    data: [u8; 9999],
+}
+
+impl NotBox {
+    fn new(data: [u8; 9999]) -> Self {
+        Self {
+            data, //~ ERROR large_assignments
+        }
+    }
+}
diff --git a/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.current.stderr b/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.current.stderr
new file mode 100644
index 00000000000..3b63ec45804
--- /dev/null
+++ b/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.current.stderr
@@ -0,0 +1,27 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/normalizing-self-auto-trait-issue-109924.rs:8:12
+   |
+LL | #![feature(return_type_notation)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+error[E0277]: `impl Future<Output = ()> { <_ as Foo>::bar() }` cannot be sent between threads safely
+  --> $DIR/normalizing-self-auto-trait-issue-109924.rs:23:11
+   |
+LL |     build(Bar);
+   |     ----- ^^^ `impl Future<Output = ()> { <_ as Foo>::bar() }` cannot be sent between threads safely
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = help: the trait `for<'a> Send` is not implemented for `impl Future<Output = ()> { <_ as Foo>::bar() }`
+note: required by a bound in `build`
+  --> $DIR/normalizing-self-auto-trait-issue-109924.rs:20:39
+   |
+LL | fn build<T>(_: T) where T: Foo<bar(): Send> {}
+   |                                       ^^^^ required by this bound in `build`
+
+error: aborting due to previous error; 1 warning emitted
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.next.stderr b/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.next.stderr
new file mode 100644
index 00000000000..6fab7178767
--- /dev/null
+++ b/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.next.stderr
@@ -0,0 +1,11 @@
+warning: the feature `return_type_notation` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/normalizing-self-auto-trait-issue-109924.rs:8:12
+   |
+LL | #![feature(return_type_notation)]
+   |            ^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #109417 <https://github.com/rust-lang/rust/issues/109417> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: 1 warning emitted
+
diff --git a/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.rs b/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.rs
new file mode 100644
index 00000000000..b2cd9707db9
--- /dev/null
+++ b/tests/ui/async-await/return-type-notation/normalizing-self-auto-trait-issue-109924.rs
@@ -0,0 +1,24 @@
+// revisions: current next
+//[current] known-bug: #109924
+//[next] check-pass
+//[next] compile-flags: -Ztrait-solver=next
+// edition:2021
+
+#![feature(async_fn_in_trait)]
+#![feature(return_type_notation)]
+//[next]~^ WARN the feature `return_type_notation` is incomplete
+
+trait Foo {
+    async fn bar(&self);
+}
+
+struct Bar;
+impl Foo for Bar {
+    async fn bar(&self) {}
+}
+
+fn build<T>(_: T) where T: Foo<bar(): Send> {}
+
+fn main() {
+    build(Bar);
+}
diff --git a/tests/ui/attributes/issue-115264-expr-field.rs b/tests/ui/attributes/issue-115264-expr-field.rs
new file mode 100644
index 00000000000..f53ac4aee66
--- /dev/null
+++ b/tests/ui/attributes/issue-115264-expr-field.rs
@@ -0,0 +1,17 @@
+// Regression test for issue 115264
+// Tests that retrieving the ident of the X::foo field
+// in main() does not cause an ICE
+
+// check-pass
+
+#[allow(dead_code)]
+struct X {
+    foo: i32,
+}
+
+fn main() {
+    let _ = X {
+        #[doc(alias = "StructItem")]
+        foo: 123,
+    };
+}
diff --git a/tests/ui/attributes/issue-115264-pat-field.rs b/tests/ui/attributes/issue-115264-pat-field.rs
new file mode 100644
index 00000000000..8c6bbe16726
--- /dev/null
+++ b/tests/ui/attributes/issue-115264-pat-field.rs
@@ -0,0 +1,19 @@
+// Regression test for issue 115264
+// Tests that retrieving the ident of 'foo' variable in
+// the pattern inside main() does not cause an ICE
+
+// check-pass
+
+struct X {
+    foo: i32,
+}
+
+#[allow(unused_variables)]
+fn main() {
+    let X {
+        #[doc(alias = "StructItem")]
+        foo
+    } = X {
+        foo: 123
+    };
+}
diff --git a/tests/ui/borrowck/issue-114374-invalid-help-fmt-args.rs b/tests/ui/borrowck/issue-114374-invalid-help-fmt-args.rs
new file mode 100644
index 00000000000..4a6c2f9ed06
--- /dev/null
+++ b/tests/ui/borrowck/issue-114374-invalid-help-fmt-args.rs
@@ -0,0 +1,16 @@
+#![allow(dead_code)]
+
+fn bar<'a>(_: std::fmt::Arguments<'a>) {}
+fn main() {
+    let x = format_args!("a {} {} {}.", 1, format_args!("b{}!", 2), 3);
+    //~^ ERROR temporary value dropped while borrowed
+
+    bar(x);
+
+    let foo = format_args!("{}", "hi");
+    //~^ ERROR temporary value dropped while borrowed
+    bar(foo);
+
+    let foo = format_args!("hi"); // no placeholder in arguments, so no error
+    bar(foo);
+}
diff --git a/tests/ui/borrowck/issue-114374-invalid-help-fmt-args.stderr b/tests/ui/borrowck/issue-114374-invalid-help-fmt-args.stderr
new file mode 100644
index 00000000000..8221505b100
--- /dev/null
+++ b/tests/ui/borrowck/issue-114374-invalid-help-fmt-args.stderr
@@ -0,0 +1,33 @@
+error[E0716]: temporary value dropped while borrowed
+  --> $DIR/issue-114374-invalid-help-fmt-args.rs:5:13
+   |
+LL |     let x = format_args!("a {} {} {}.", 1, format_args!("b{}!", 2), 3);
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement
+   |             |
+   |             creates a temporary value which is freed while still in use
+...
+LL |     bar(x);
+   |         - borrow later used here
+   |
+   = note: the result of `format_args!` can only be assigned directly if no placeholders in it's arguments are used
+   = note: to learn more, visit <https://doc.rust-lang.org/std/macro.format_args.html>
+   = note: this error originates in the macro `format_args` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0716]: temporary value dropped while borrowed
+  --> $DIR/issue-114374-invalid-help-fmt-args.rs:10:15
+   |
+LL |     let foo = format_args!("{}", "hi");
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^- temporary value is freed at the end of this statement
+   |               |
+   |               creates a temporary value which is freed while still in use
+LL |
+LL |     bar(foo);
+   |         --- borrow later used here
+   |
+   = note: the result of `format_args!` can only be assigned directly if no placeholders in it's arguments are used
+   = note: to learn more, visit <https://doc.rust-lang.org/std/macro.format_args.html>
+   = note: this error originates in the macro `format_args` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0716`.
diff --git a/tests/ui/borrowck/issue-115259-suggest-iter-mut.fixed b/tests/ui/borrowck/issue-115259-suggest-iter-mut.fixed
new file mode 100644
index 00000000000..4653fe7375d
--- /dev/null
+++ b/tests/ui/borrowck/issue-115259-suggest-iter-mut.fixed
@@ -0,0 +1,20 @@
+// run-rustfix
+#![allow(unused_mut)]
+#![allow(dead_code)]
+
+pub trait Layer {
+    fn process(&mut self) -> u32;
+}
+
+pub struct State {
+    layers: Vec<Box<dyn Layer>>,
+}
+
+impl State {
+    pub fn process(&mut self) -> u32 {
+        self.layers.iter_mut().fold(0, |result, mut layer| result + layer.process())
+        //~^ ERROR cannot borrow `**layer` as mutable, as it is behind a `&` reference
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/borrowck/issue-115259-suggest-iter-mut.rs b/tests/ui/borrowck/issue-115259-suggest-iter-mut.rs
new file mode 100644
index 00000000000..e0f6ab1321f
--- /dev/null
+++ b/tests/ui/borrowck/issue-115259-suggest-iter-mut.rs
@@ -0,0 +1,20 @@
+// run-rustfix
+#![allow(unused_mut)]
+#![allow(dead_code)]
+
+pub trait Layer {
+    fn process(&mut self) -> u32;
+}
+
+pub struct State {
+    layers: Vec<Box<dyn Layer>>,
+}
+
+impl State {
+    pub fn process(&mut self) -> u32 {
+        self.layers.iter().fold(0, |result, mut layer| result + layer.process())
+        //~^ ERROR cannot borrow `**layer` as mutable, as it is behind a `&` reference
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/borrowck/issue-115259-suggest-iter-mut.stderr b/tests/ui/borrowck/issue-115259-suggest-iter-mut.stderr
new file mode 100644
index 00000000000..7e0fc2cf298
--- /dev/null
+++ b/tests/ui/borrowck/issue-115259-suggest-iter-mut.stderr
@@ -0,0 +1,16 @@
+error[E0596]: cannot borrow `**layer` as mutable, as it is behind a `&` reference
+  --> $DIR/issue-115259-suggest-iter-mut.rs:15:65
+   |
+LL |         self.layers.iter().fold(0, |result, mut layer| result + layer.process())
+   |                                             ---------           ^^^^^ `layer` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |                                             |
+   |                                             consider changing this binding's type to be: `&mut Box<dyn Layer>`
+   |
+help: you may want to use `iter_mut` here
+   |
+LL |         self.layers.iter_mut().fold(0, |result, mut layer| result + layer.process())
+   |                     ~~~~~~~~
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.
diff --git a/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.fixed b/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.fixed
new file mode 100644
index 00000000000..f02374d8e11
--- /dev/null
+++ b/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.fixed
@@ -0,0 +1,36 @@
+// run-rustfix
+#![allow(unused_mut)]
+#![allow(dead_code)]
+use std::path::PathBuf;
+
+#[derive(Clone)]
+struct Container {
+    things: Vec<PathBuf>,
+}
+
+impl Container {
+    fn things(&mut self) -> &[PathBuf] {
+        &self.things
+    }
+}
+
+// contains containers
+struct ContainerContainer {
+    contained: Vec<Container>,
+}
+
+impl ContainerContainer {
+    fn contained(&self) -> &[Container] {
+        &self.contained
+    }
+
+    fn all_the_things(&mut self) -> &[PathBuf] {
+        let mut vec = self.contained.clone();
+        let _a =
+            vec.iter_mut().flat_map(|container| container.things()).cloned().collect::<Vec<PathBuf>>();
+        //~^ ERROR cannot borrow `*container` as mutable, as it is behind a `&` reference
+        unimplemented!();
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.rs b/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.rs
new file mode 100644
index 00000000000..2d0b837a946
--- /dev/null
+++ b/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.rs
@@ -0,0 +1,36 @@
+// run-rustfix
+#![allow(unused_mut)]
+#![allow(dead_code)]
+use std::path::PathBuf;
+
+#[derive(Clone)]
+struct Container {
+    things: Vec<PathBuf>,
+}
+
+impl Container {
+    fn things(&mut self) -> &[PathBuf] {
+        &self.things
+    }
+}
+
+// contains containers
+struct ContainerContainer {
+    contained: Vec<Container>,
+}
+
+impl ContainerContainer {
+    fn contained(&self) -> &[Container] {
+        &self.contained
+    }
+
+    fn all_the_things(&mut self) -> &[PathBuf] {
+        let mut vec = self.contained.clone();
+        let _a =
+            vec.iter().flat_map(|container| container.things()).cloned().collect::<Vec<PathBuf>>();
+        //~^ ERROR cannot borrow `*container` as mutable, as it is behind a `&` reference
+        unimplemented!();
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.stderr b/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.stderr
new file mode 100644
index 00000000000..19f194100a1
--- /dev/null
+++ b/tests/ui/borrowck/issue-62387-suggest-iter-mut-2.stderr
@@ -0,0 +1,16 @@
+error[E0596]: cannot borrow `*container` as mutable, as it is behind a `&` reference
+  --> $DIR/issue-62387-suggest-iter-mut-2.rs:30:45
+   |
+LL |             vec.iter().flat_map(|container| container.things()).cloned().collect::<Vec<PathBuf>>();
+   |                                  ---------  ^^^^^^^^^ `container` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |                                  |
+   |                                  consider changing this binding's type to be: `&mut Container`
+   |
+help: you may want to use `iter_mut` here
+   |
+LL |             vec.iter_mut().flat_map(|container| container.things()).cloned().collect::<Vec<PathBuf>>();
+   |                 ~~~~~~~~
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.
diff --git a/tests/ui/borrowck/issue-62387-suggest-iter-mut.fixed b/tests/ui/borrowck/issue-62387-suggest-iter-mut.fixed
new file mode 100644
index 00000000000..8bf2625de6d
--- /dev/null
+++ b/tests/ui/borrowck/issue-62387-suggest-iter-mut.fixed
@@ -0,0 +1,30 @@
+// run-rustfix
+#![allow(unused_mut)]
+#![allow(dead_code)]
+
+#[derive(Debug)]
+struct A {
+    a: i32,
+}
+
+impl A {
+    fn double(&mut self) {
+        self.a += self.a
+    }
+}
+
+fn baz() {
+    let mut v = [A { a: 4 }];
+    v.iter_mut().for_each(|a| a.double());
+    //~^ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+    println!("{:?}", v);
+}
+
+fn bar() {
+    let mut v = [A { a: 4 }];
+    v.iter_mut().rev().rev().for_each(|a| a.double());
+    //~^ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+    println!("{:?}", v);
+}
+
+fn main() {}
diff --git a/tests/ui/borrowck/issue-62387-suggest-iter-mut.rs b/tests/ui/borrowck/issue-62387-suggest-iter-mut.rs
new file mode 100644
index 00000000000..39bc30bf294
--- /dev/null
+++ b/tests/ui/borrowck/issue-62387-suggest-iter-mut.rs
@@ -0,0 +1,30 @@
+// run-rustfix
+#![allow(unused_mut)]
+#![allow(dead_code)]
+
+#[derive(Debug)]
+struct A {
+    a: i32,
+}
+
+impl A {
+    fn double(&mut self) {
+        self.a += self.a
+    }
+}
+
+fn baz() {
+    let mut v = [A { a: 4 }];
+    v.iter().for_each(|a| a.double());
+    //~^ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+    println!("{:?}", v);
+}
+
+fn bar() {
+    let mut v = [A { a: 4 }];
+    v.iter().rev().rev().for_each(|a| a.double());
+    //~^ ERROR cannot borrow `*a` as mutable, as it is behind a `&` reference
+    println!("{:?}", v);
+}
+
+fn main() {}
diff --git a/tests/ui/borrowck/issue-62387-suggest-iter-mut.stderr b/tests/ui/borrowck/issue-62387-suggest-iter-mut.stderr
new file mode 100644
index 00000000000..fd58e433020
--- /dev/null
+++ b/tests/ui/borrowck/issue-62387-suggest-iter-mut.stderr
@@ -0,0 +1,29 @@
+error[E0596]: cannot borrow `*a` as mutable, as it is behind a `&` reference
+  --> $DIR/issue-62387-suggest-iter-mut.rs:18:27
+   |
+LL |     v.iter().for_each(|a| a.double());
+   |                        -  ^ `a` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |                        |
+   |                        consider changing this binding's type to be: `&mut A`
+   |
+help: you may want to use `iter_mut` here
+   |
+LL |     v.iter_mut().for_each(|a| a.double());
+   |       ~~~~~~~~
+
+error[E0596]: cannot borrow `*a` as mutable, as it is behind a `&` reference
+  --> $DIR/issue-62387-suggest-iter-mut.rs:25:39
+   |
+LL |     v.iter().rev().rev().for_each(|a| a.double());
+   |                                    -  ^ `a` is a `&` reference, so the data it refers to cannot be borrowed as mutable
+   |                                    |
+   |                                    consider changing this binding's type to be: `&mut A`
+   |
+help: you may want to use `iter_mut` here
+   |
+LL |     v.iter_mut().rev().rev().for_each(|a| a.double());
+   |       ~~~~~~~~
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0596`.
diff --git a/tests/ui/c-variadic/variadic-ffi-1.stderr b/tests/ui/c-variadic/variadic-ffi-1.stderr
index c7899338197..4beea83d8a5 100644
--- a/tests/ui/c-variadic/variadic-ffi-1.stderr
+++ b/tests/ui/c-variadic/variadic-ffi-1.stderr
@@ -46,7 +46,6 @@ LL |         let x: unsafe extern "C" fn(f: isize, x: u8) = foo;
    |
    = note: expected fn pointer `unsafe extern "C" fn(_, _)`
                  found fn item `unsafe extern "C" fn(_, _, ...) {foo}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 
 error[E0308]: mismatched types
   --> $DIR/variadic-ffi-1.rs:26:54
@@ -58,7 +57,6 @@ LL |         let y: extern "C" fn(f: isize, x: u8, ...) = bar;
    |
    = note: expected fn pointer `extern "C" fn(_, _, ...)`
                  found fn item `extern "C" fn(_, _) {bar}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 
 error[E0617]: can't pass `f32` to variadic function
   --> $DIR/variadic-ffi-1.rs:28:19
diff --git a/tests/ui/c-variadic/variadic-ffi-2.rs b/tests/ui/c-variadic/variadic-ffi-2.rs
index c34b7e55f6a..67a0a9a1dec 100644
--- a/tests/ui/c-variadic/variadic-ffi-2.rs
+++ b/tests/ui/c-variadic/variadic-ffi-2.rs
@@ -3,10 +3,13 @@
 
 fn baz(f: extern "stdcall" fn(usize, ...)) {
     //~^ ERROR: C-variadic function must have a compatible calling convention,
-    // like C, cdecl, win64, sysv64 or efiapi
+    // like C, cdecl, aapcs, win64, sysv64 or efiapi
     f(22, 44);
 }
 
+fn aapcs(f: extern "aapcs" fn(usize, ...)) {
+    f(22, 44);
+}
 fn sysv(f: extern "sysv64" fn(usize, ...)) {
     f(22, 44);
 }
diff --git a/tests/ui/c-variadic/variadic-ffi-2.stderr b/tests/ui/c-variadic/variadic-ffi-2.stderr
index e21001ecaf8..8884fc6fb2a 100644
--- a/tests/ui/c-variadic/variadic-ffi-2.stderr
+++ b/tests/ui/c-variadic/variadic-ffi-2.stderr
@@ -1,4 +1,4 @@
-error[E0045]: C-variadic function must have a compatible calling convention, like `C`, `cdecl`, `win64`, `sysv64` or `efiapi`
+error[E0045]: C-variadic function must have a compatible calling convention, like `C`, `cdecl`, `aapcs`, `win64`, `sysv64` or `efiapi`
   --> $DIR/variadic-ffi-2.rs:4:11
    |
 LL | fn baz(f: extern "stdcall" fn(usize, ...)) {
diff --git a/tests/ui/cast/cast-as-bool.rs b/tests/ui/cast/cast-as-bool.rs
index fbebc80d91c..750a88f97eb 100644
--- a/tests/ui/cast/cast-as-bool.rs
+++ b/tests/ui/cast/cast-as-bool.rs
@@ -1,12 +1,48 @@
 fn main() {
-    let u = 5 as bool; //~ ERROR cannot cast as `bool`
+    let u = 5 as bool; //~ ERROR cannot cast `i32` as `bool`
                        //~| HELP compare with zero instead
                        //~| SUGGESTION 5 != 0
 
-    let t = (1 + 2) as bool; //~ ERROR cannot cast as `bool`
+    let t = (1 + 2) as bool; //~ ERROR cannot cast `i32` as `bool`
                              //~| HELP compare with zero instead
                              //~| SUGGESTION (1 + 2) != 0
 
+    let _ = 5_u32 as bool; //~ ERROR cannot cast `u32` as `bool`
+                           //~| HELP compare with zero instead
+
+    let _ = 64.0_f64 as bool; //~ ERROR cannot cast `f64` as `bool`
+                              //~| HELP compare with zero instead
+
+    // Enums that can normally be cast to integers can't be cast to `bool`, just like integers.
+    // Note that enums that cannot be cast to integers can't be cast to anything at *all*
+    // so that's not tested here.
+    enum IntEnum {
+        Zero,
+        One,
+        Two
+    }
+    let _ = IntEnum::One as bool; //~ ERROR cannot cast `IntEnum` as `bool`
+
+    fn uwu(_: u8) -> String {
+        todo!()
+    }
+
+    unsafe fn owo() {}
+
+    // fn item to bool
+    let _ = uwu as bool; //~ ERROR cannot cast `fn(u8) -> String {uwu}` as `bool`
+    // unsafe fn item
+    let _ = owo as bool; //~ ERROR cannot cast `unsafe fn() {owo}` as `bool`
+
+    // fn ptr to bool
+    let _ = uwu as fn(u8) -> String as bool; //~ ERROR cannot cast `fn(u8) -> String` as `bool`
+
+    let _ = 'x' as bool; //~ ERROR cannot cast `char` as `bool`
+
+    let ptr = 1 as *const ();
+
+    let _ = ptr as bool; //~ ERROR cannot cast `*const ()` as `bool`
+
     let v = "hello" as bool;
     //~^ ERROR casting `&'static str` as `bool` is invalid
     //~| HELP consider using the `is_empty` method on `&'static str` to determine if it contains anything
diff --git a/tests/ui/cast/cast-as-bool.stderr b/tests/ui/cast/cast-as-bool.stderr
index 19ac8f10fec..852fb30cc20 100644
--- a/tests/ui/cast/cast-as-bool.stderr
+++ b/tests/ui/cast/cast-as-bool.stderr
@@ -1,18 +1,66 @@
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `i32` as `bool`
   --> $DIR/cast-as-bool.rs:2:13
    |
 LL |     let u = 5 as bool;
    |             ^^^^^^^^^ help: compare with zero instead: `5 != 0`
 
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `i32` as `bool`
   --> $DIR/cast-as-bool.rs:6:13
    |
 LL |     let t = (1 + 2) as bool;
    |             ^^^^^^^^^^^^^^^ help: compare with zero instead: `(1 + 2) != 0`
 
-error[E0606]: casting `&'static str` as `bool` is invalid
+error[E0054]: cannot cast `u32` as `bool`
   --> $DIR/cast-as-bool.rs:10:13
    |
+LL |     let _ = 5_u32 as bool;
+   |             ^^^^^^^^^^^^^ help: compare with zero instead: `5_u32 != 0`
+
+error[E0054]: cannot cast `f64` as `bool`
+  --> $DIR/cast-as-bool.rs:13:13
+   |
+LL |     let _ = 64.0_f64 as bool;
+   |             ^^^^^^^^^^^^^^^^ help: compare with zero instead: `64.0_f64 != 0`
+
+error[E0054]: cannot cast `IntEnum` as `bool`
+  --> $DIR/cast-as-bool.rs:24:13
+   |
+LL |     let _ = IntEnum::One as bool;
+   |             ^^^^^^^^^^^^^^^^^^^^ unsupported cast
+
+error[E0054]: cannot cast `fn(u8) -> String {uwu}` as `bool`
+  --> $DIR/cast-as-bool.rs:33:13
+   |
+LL |     let _ = uwu as bool;
+   |             ^^^^^^^^^^^ unsupported cast
+
+error[E0054]: cannot cast `unsafe fn() {owo}` as `bool`
+  --> $DIR/cast-as-bool.rs:35:13
+   |
+LL |     let _ = owo as bool;
+   |             ^^^^^^^^^^^ unsupported cast
+
+error[E0054]: cannot cast `fn(u8) -> String` as `bool`
+  --> $DIR/cast-as-bool.rs:38:13
+   |
+LL |     let _ = uwu as fn(u8) -> String as bool;
+   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unsupported cast
+
+error[E0054]: cannot cast `char` as `bool`
+  --> $DIR/cast-as-bool.rs:40:13
+   |
+LL |     let _ = 'x' as bool;
+   |             ^^^^^^^^^^^ unsupported cast
+
+error[E0054]: cannot cast `*const ()` as `bool`
+  --> $DIR/cast-as-bool.rs:44:13
+   |
+LL |     let _ = ptr as bool;
+   |             ^^^^^^^^^^^ unsupported cast
+
+error[E0606]: casting `&'static str` as `bool` is invalid
+  --> $DIR/cast-as-bool.rs:46:13
+   |
 LL |     let v = "hello" as bool;
    |             ^^^^^^^^^^^^^^^
    |
@@ -21,7 +69,7 @@ help: consider using the `is_empty` method on `&'static str` to determine if it
 LL |     let v = !"hello".is_empty();
    |             +       ~~~~~~~~~~~
 
-error: aborting due to 3 previous errors
+error: aborting due to 11 previous errors
 
 Some errors have detailed explanations: E0054, E0606.
 For more information about an error, try `rustc --explain E0054`.
diff --git a/tests/ui/cast/cast-rfc0401-2.rs b/tests/ui/cast/cast-rfc0401-2.rs
index 7709aa34104..70604a587ea 100644
--- a/tests/ui/cast/cast-rfc0401-2.rs
+++ b/tests/ui/cast/cast-rfc0401-2.rs
@@ -4,5 +4,5 @@
 
 fn main() {
     let _ = 3 as bool;
-    //~^ ERROR cannot cast as `bool`
+    //~^ ERROR cannot cast `i32` as `bool`
 }
diff --git a/tests/ui/cast/cast-rfc0401-2.stderr b/tests/ui/cast/cast-rfc0401-2.stderr
index 52f6af78a9b..5dc21ca847c 100644
--- a/tests/ui/cast/cast-rfc0401-2.stderr
+++ b/tests/ui/cast/cast-rfc0401-2.stderr
@@ -1,4 +1,4 @@
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `i32` as `bool`
   --> $DIR/cast-rfc0401-2.rs:6:13
    |
 LL |     let _ = 3 as bool;
diff --git a/tests/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr b/tests/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr
index 3a5fad15421..0807f459029 100644
--- a/tests/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr
+++ b/tests/ui/closures/2229_closure_analysis/match/non-exhaustive-match.stderr
@@ -45,7 +45,8 @@ note: `E2` defined here
    |
 LL | pub enum E2 { A, B }
    | ^^^^^^^^^^^
-   = note: the matched value is of type `E2`, which is marked as non-exhaustive
+   = note: the matched value is of type `E2`
+   = note: `E2` is marked as non-exhaustive, so a wildcard `_` is necessary to match exhaustively
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
 LL |     let _e = || { match e2 { E2::A => (), E2::B => (), _ => todo!() } };
diff --git a/tests/ui/closures/2229_closure_analysis/repr_packed.rs b/tests/ui/closures/2229_closure_analysis/repr_packed.rs
index f23670f63ac..8c23454fae9 100644
--- a/tests/ui/closures/2229_closure_analysis/repr_packed.rs
+++ b/tests/ui/closures/2229_closure_analysis/repr_packed.rs
@@ -3,7 +3,8 @@
 #![feature(rustc_attrs)]
 
 // `u8` aligned at a byte and are unaffected by repr(packed).
-// Therefore we can precisely (and safely) capture references to both the fields.
+// Therefore we *could* precisely (and safely) capture references to both the fields,
+// but we don't, since we don't want capturing to change when field types change alignment.
 fn test_alignment_not_affected() {
     #[repr(packed)]
     struct Foo { x: u8, y: u8 }
@@ -17,11 +18,10 @@ fn test_alignment_not_affected() {
     //~^ ERROR: First Pass analysis includes:
     //~| ERROR: Min Capture analysis includes:
         let z1: &u8 = &foo.x;
-        //~^ NOTE: Capturing foo[(0, 0)] -> ImmBorrow
-        //~| NOTE: Min Capture foo[(0, 0)] -> ImmBorrow
+        //~^ NOTE: Capturing foo[] -> ImmBorrow
         let z2: &mut u8 = &mut foo.y;
-        //~^ NOTE: Capturing foo[(1, 0)] -> MutBorrow
-        //~| NOTE: Min Capture foo[(1, 0)] -> MutBorrow
+        //~^ NOTE: Capturing foo[] -> MutBorrow
+        //~| NOTE: Min Capture foo[] -> MutBorrow
 
         *z2 = 42;
 
diff --git a/tests/ui/closures/2229_closure_analysis/repr_packed.stderr b/tests/ui/closures/2229_closure_analysis/repr_packed.stderr
index 580061ebc6e..32b3d844c6e 100644
--- a/tests/ui/closures/2229_closure_analysis/repr_packed.stderr
+++ b/tests/ui/closures/2229_closure_analysis/repr_packed.stderr
@@ -1,5 +1,5 @@
 error[E0658]: attributes on expressions are experimental
-  --> $DIR/repr_packed.rs:13:17
+  --> $DIR/repr_packed.rs:14:17
    |
 LL |     let mut c = #[rustc_capture_analysis]
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -26,7 +26,7 @@ LL |     let c = #[rustc_capture_analysis]
    = help: add `#![feature(stmt_expr_attributes)]` to the crate attributes to enable
 
 error: First Pass analysis includes:
-  --> $DIR/repr_packed.rs:16:5
+  --> $DIR/repr_packed.rs:17:5
    |
 LL | /     || {
 LL | |
@@ -37,19 +37,19 @@ LL | |         println!("({}, {})", z1, z2);
 LL | |     };
    | |_____^
    |
-note: Capturing foo[(0, 0)] -> ImmBorrow
-  --> $DIR/repr_packed.rs:19:24
+note: Capturing foo[] -> ImmBorrow
+  --> $DIR/repr_packed.rs:20:24
    |
 LL |         let z1: &u8 = &foo.x;
    |                        ^^^^^
-note: Capturing foo[(1, 0)] -> MutBorrow
+note: Capturing foo[] -> MutBorrow
   --> $DIR/repr_packed.rs:22:32
    |
 LL |         let z2: &mut u8 = &mut foo.y;
    |                                ^^^^^
 
 error: Min Capture analysis includes:
-  --> $DIR/repr_packed.rs:16:5
+  --> $DIR/repr_packed.rs:17:5
    |
 LL | /     || {
 LL | |
@@ -60,12 +60,7 @@ LL | |         println!("({}, {})", z1, z2);
 LL | |     };
    | |_____^
    |
-note: Min Capture foo[(0, 0)] -> ImmBorrow
-  --> $DIR/repr_packed.rs:19:24
-   |
-LL |         let z1: &u8 = &foo.x;
-   |                        ^^^^^
-note: Min Capture foo[(1, 0)] -> MutBorrow
+note: Min Capture foo[] -> MutBorrow
   --> $DIR/repr_packed.rs:22:32
    |
 LL |         let z2: &mut u8 = &mut foo.y;
diff --git a/tests/ui/issues/issue-11873.rs b/tests/ui/closures/issue-11873.rs
index d3bd05caf38..d3bd05caf38 100644
--- a/tests/ui/issues/issue-11873.rs
+++ b/tests/ui/closures/issue-11873.rs
diff --git a/tests/ui/issues/issue-11873.stderr b/tests/ui/closures/issue-11873.stderr
index c814eedd226..c814eedd226 100644
--- a/tests/ui/issues/issue-11873.stderr
+++ b/tests/ui/closures/issue-11873.stderr
diff --git a/tests/ui/issues/issue-25439.rs b/tests/ui/closures/issue-25439.rs
index 4f73ff3e38b..4f73ff3e38b 100644
--- a/tests/ui/issues/issue-25439.rs
+++ b/tests/ui/closures/issue-25439.rs
diff --git a/tests/ui/issues/issue-25439.stderr b/tests/ui/closures/issue-25439.stderr
index dadae23fdf3..dadae23fdf3 100644
--- a/tests/ui/issues/issue-25439.stderr
+++ b/tests/ui/closures/issue-25439.stderr
diff --git a/tests/ui/codegen/subtyping-enforces-type-equality.rs b/tests/ui/codegen/subtyping-enforces-type-equality.rs
new file mode 100644
index 00000000000..a5ffcb3f854
--- /dev/null
+++ b/tests/ui/codegen/subtyping-enforces-type-equality.rs
@@ -0,0 +1,48 @@
+// ignore-pass
+// build-pass
+// edition:2021
+use std::future::Future;
+use std::pin::Pin;
+
+type BoxFuture<T> = Pin<Box<dyn Future<Output = T>>>;
+
+fn main() {
+    let _ = wrapper_call(handler);
+}
+
+async fn wrapper_call(handler: impl Handler) {
+    handler.call().await;
+}
+async fn handler() {
+    f(&()).await;
+}
+async fn f<'a>(db: impl Acquire<'a>) {
+    db.acquire().await;
+}
+
+trait Handler {
+    type Future: Future;
+    fn call(self) -> Self::Future;
+}
+
+impl<Fut, F> Handler for F
+where
+    F: Fn() -> Fut,
+    Fut: Future,
+{
+    type Future = Fut;
+    fn call(self) -> Self::Future {
+        loop {}
+    }
+}
+
+trait Acquire<'a> {
+    type Connection;
+    fn acquire(self) -> BoxFuture<Self::Connection>;
+}
+impl<'a> Acquire<'a> for &'a () {
+    type Connection = Self;
+    fn acquire(self) -> BoxFuture<Self> {
+        loop {}
+    }
+}
diff --git a/tests/ui/codegen/subtyping-enforces-type-equality.stderr b/tests/ui/codegen/subtyping-enforces-type-equality.stderr
new file mode 100644
index 00000000000..870ca0f839f
--- /dev/null
+++ b/tests/ui/codegen/subtyping-enforces-type-equality.stderr
@@ -0,0 +1 @@
+WARN rustc_codegen_ssa::mir::locals Unexpected initial operand type. See the issues/114858
diff --git a/tests/ui/coherence/coherence-unsafe-trait-object-impl.stderr b/tests/ui/coherence/coherence-unsafe-trait-object-impl.stderr
index 2e2dac288a1..a3a37fd2775 100644
--- a/tests/ui/coherence/coherence-unsafe-trait-object-impl.stderr
+++ b/tests/ui/coherence/coherence-unsafe-trait-object-impl.stderr
@@ -6,6 +6,11 @@ LL |     takes_t(t);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/coherence-unsafe-trait-object-impl.rs:6:1
+   |
+LL | trait Trait: Sized {
+   | ^^^^^^^^^^^^^^^^^^
 note: required by a bound in `takes_t`
   --> $DIR/coherence-unsafe-trait-object-impl.rs:10:15
    |
diff --git a/tests/ui/coherence/warn-when-cycle-is-error-in-coherence.stderr b/tests/ui/coherence/warn-when-cycle-is-error-in-coherence.stderr
index f315ba82130..89289767b83 100644
--- a/tests/ui/coherence/warn-when-cycle-is-error-in-coherence.stderr
+++ b/tests/ui/coherence/warn-when-cycle-is-error-in-coherence.stderr
@@ -6,13 +6,11 @@ LL | #[derive(PartialEq, Default)]
 ...
 LL | impl<T, Q> PartialEq<Q> for Interval<T>
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the first impl is here
-...
-LL |     Q: ?Sized + PartialOrd,
-   |                 ---------- `Interval<_>: PartialOrd` may be considered to hold in future releases, causing the impls to overlap
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #114040 <https://github.com/rust-lang/rust/issues/114040>
    = note: impls that are not considered to overlap may be considered to overlap in the future
+   = note: `Interval<_>: PartialOrd` may be considered to hold in future releases, causing the impls to overlap
 note: the lint level is defined here
   --> $DIR/warn-when-cycle-is-error-in-coherence.rs:1:9
    |
diff --git a/tests/ui/const-generics/dont-evaluate-array-len-on-err-1.stderr b/tests/ui/const-generics/dont-evaluate-array-len-on-err-1.stderr
index cb51d9b1ea5..b3a27566026 100644
--- a/tests/ui/const-generics/dont-evaluate-array-len-on-err-1.stderr
+++ b/tests/ui/const-generics/dont-evaluate-array-len-on-err-1.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `[Adt; std::mem::size_of::<Self::Assoc>()]: Foo` i
    |
 LL |         <[Adt; std::mem::size_of::<Self::Assoc>()] as Foo>::bar()
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `[Adt; std::mem::size_of::<Self::Assoc>()]`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/dont-evaluate-array-len-on-err-1.rs:9:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/const-generics/early/const-param-from-outer-fn.rs b/tests/ui/const-generics/early/const-param-from-outer-fn.rs
index c3b418ee3f8..ee57f3c4fc3 100644
--- a/tests/ui/const-generics/early/const-param-from-outer-fn.rs
+++ b/tests/ui/const-generics/early/const-param-from-outer-fn.rs
@@ -1,6 +1,6 @@
 fn foo<const X: u32>() {
     fn bar() -> u32 {
-        X //~ ERROR can't use generic parameters from outer function
+        X //~ ERROR can't use generic parameters from outer item
     }
 }
 
diff --git a/tests/ui/const-generics/early/const-param-from-outer-fn.stderr b/tests/ui/const-generics/early/const-param-from-outer-fn.stderr
index e3bf38b702e..826f2657905 100644
--- a/tests/ui/const-generics/early/const-param-from-outer-fn.stderr
+++ b/tests/ui/const-generics/early/const-param-from-outer-fn.stderr
@@ -1,12 +1,12 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/const-param-from-outer-fn.rs:3:9
    |
 LL | fn foo<const X: u32>() {
-   |              - const parameter from outer function
+   |              - const parameter from outer item
 LL |     fn bar() -> u32 {
-   |           - help: try using a local generic parameter instead: `<X>`
+   |           - help: try introducing a local generic parameter here: `<X>`
 LL |         X
-   |         ^ use of generic parameter from outer function
+   |         ^ use of generic parameter from outer item
 
 error: aborting due to previous error
 
diff --git a/tests/ui/const-generics/generic_const_exprs/eval-privacy.rs b/tests/ui/const-generics/generic_const_exprs/eval-privacy.rs
index e5464a4253f..8023b998a40 100644
--- a/tests/ui/const-generics/generic_const_exprs/eval-privacy.rs
+++ b/tests/ui/const-generics/generic_const_exprs/eval-privacy.rs
@@ -1,12 +1,6 @@
 #![crate_type = "lib"]
 #![feature(generic_const_exprs)]
-#![feature(type_privacy_lints)]
 #![allow(incomplete_features)]
-#![warn(private_interfaces)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
 
 pub struct Const<const U: u8>;
 
@@ -21,7 +15,6 @@ where
 {
     type AssocTy = Const<{ my_const_fn(U) }>;
     //~^ ERROR private type
-    //~| WARNING type `fn(u8) -> u8 {my_const_fn}` is more private than the item `<Const<U> as Trait>::AssocTy`
     fn assoc_fn() -> Self::AssocTy {
         Const
     }
diff --git a/tests/ui/const-generics/generic_const_exprs/eval-privacy.stderr b/tests/ui/const-generics/generic_const_exprs/eval-privacy.stderr
index 16fae6b5c63..2d9de8805bb 100644
--- a/tests/ui/const-generics/generic_const_exprs/eval-privacy.stderr
+++ b/tests/ui/const-generics/generic_const_exprs/eval-privacy.stderr
@@ -1,5 +1,5 @@
 error[E0446]: private type `fn(u8) -> u8 {my_const_fn}` in public interface
-  --> $DIR/eval-privacy.rs:22:5
+  --> $DIR/eval-privacy.rs:16:5
    |
 LL |     type AssocTy = Const<{ my_const_fn(U) }>;
    |     ^^^^^^^^^^^^ can't leak private type
@@ -7,23 +7,6 @@ LL |     type AssocTy = Const<{ my_const_fn(U) }>;
 LL | const fn my_const_fn(val: u8) -> u8 {
    | ----------------------------------- `fn(u8) -> u8 {my_const_fn}` declared as private
 
-warning: type `fn(u8) -> u8 {my_const_fn}` is more private than the item `<Const<U> as Trait>::AssocTy`
-  --> $DIR/eval-privacy.rs:22:5
-   |
-LL |     type AssocTy = Const<{ my_const_fn(U) }>;
-   |     ^^^^^^^^^^^^ associated type `<Const<U> as Trait>::AssocTy` is reachable at visibility `pub`
-   |
-note: but type `fn(u8) -> u8 {my_const_fn}` is only usable at visibility `pub(crate)`
-  --> $DIR/eval-privacy.rs:30:1
-   |
-LL | const fn my_const_fn(val: u8) -> u8 {
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/eval-privacy.rs:5:9
-   |
-LL | #![warn(private_interfaces)]
-   |         ^^^^^^^^^^^^^^^^^^
-
-error: aborting due to previous error; 1 warning emitted
+error: aborting due to previous error
 
 For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/const-generics/generic_const_exprs/issue-85848.stderr b/tests/ui/const-generics/generic_const_exprs/issue-85848.stderr
index e50ac671eca..9391b1c1a17 100644
--- a/tests/ui/const-generics/generic_const_exprs/issue-85848.stderr
+++ b/tests/ui/const-generics/generic_const_exprs/issue-85848.stderr
@@ -6,7 +6,11 @@ LL |     writes_to_specific_path(&cap);
    |     |
    |     required by a bound introduced by this call
    |
-   = help: the trait `Delegates<U>` is implemented for `T`
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-85848.rs:4:1
+   |
+LL | trait _Contains<T> {
+   | ^^^^^^^^^^^^^^^^^^
 note: required for `&C` to implement `Contains<(), true>`
   --> $DIR/issue-85848.rs:21:12
    |
diff --git a/tests/ui/const-generics/issues/issue-86530.stderr b/tests/ui/const-generics/issues/issue-86530.stderr
index 620ed4f0fb2..d02808f7c56 100644
--- a/tests/ui/const-generics/issues/issue-86530.stderr
+++ b/tests/ui/const-generics/issues/issue-86530.stderr
@@ -6,6 +6,11 @@ LL |     z(" ");
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-86530.rs:4:1
+   |
+LL | pub trait X {
+   | ^^^^^^^^^^^
 note: required by a bound in `z`
   --> $DIR/issue-86530.rs:10:8
    |
diff --git a/tests/ui/const-generics/late-bound-vars/in_closure.rs b/tests/ui/const-generics/late-bound-vars/in_closure.rs
index 4fdf603b05f..6549cad629b 100644
--- a/tests/ui/const-generics/late-bound-vars/in_closure.rs
+++ b/tests/ui/const-generics/late-bound-vars/in_closure.rs
@@ -1,4 +1,4 @@
-// failure-status: 101
+// failure-status: 1
 // known-bug: unknown
 // error-pattern:internal compiler error
 // normalize-stderr-test "internal compiler error.*" -> ""
@@ -22,7 +22,10 @@
 #![feature(generic_const_exprs)]
 #![allow(incomplete_features)]
 
-const fn inner<'a>() -> usize where &'a (): Sized {
+const fn inner<'a>() -> usize
+where
+    &'a (): Sized,
+{
     3
 }
 
diff --git a/tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.rs b/tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.rs
new file mode 100644
index 00000000000..0bf2f0e6669
--- /dev/null
+++ b/tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.rs
@@ -0,0 +1,5 @@
+#![crate_type = "lib"]
+
+struct Bug([u8; panic!{"\t"}]);
+//~^ ERROR evaluation of constant value failed
+//~| NOTE: in this expansion of panic!
diff --git a/tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.stderr b/tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.stderr
new file mode 100644
index 00000000000..82c63dd176d
--- /dev/null
+++ b/tests/ui/consts/const-eval/const_panic-normalize-tabs-115498.stderr
@@ -0,0 +1,11 @@
+error[E0080]: evaluation of constant value failed
+  --> $DIR/const_panic-normalize-tabs-115498.rs:3:17
+   |
+LL | struct Bug([u8; panic!{"\t"}]);
+   |                 ^^^^^^^^^^^^ the evaluated program panicked at '    ', $DIR/const_panic-normalize-tabs-115498.rs:3:17
+   |
+   = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0080`.
diff --git a/tests/ui/consts/const-eval/ub-uninhabit.rs b/tests/ui/consts/const-eval/ub-uninhabit.rs
index 10edae437ee..01600f545ae 100644
--- a/tests/ui/consts/const-eval/ub-uninhabit.rs
+++ b/tests/ui/consts/const-eval/ub-uninhabit.rs
@@ -1,7 +1,10 @@
 // Strip out raw byte dumps to make comparison platform-independent:
 // normalize-stderr-test "(the raw bytes of the constant) \(size: [0-9]*, align: [0-9]*\)" -> "$1 (size: $$SIZE, align: $$ALIGN)"
 // normalize-stderr-test "([0-9a-f][0-9a-f] |╾─*a(lloc)?[0-9]+(\+[a-z0-9]+)?─*╼ )+ *│.*" -> "HEX_DUMP"
+#![feature(core_intrinsics)]
+#![feature(never_type)]
 
+use std::intrinsics;
 use std::mem;
 
 #[derive(Copy, Clone)]
@@ -15,11 +18,24 @@ union MaybeUninit<T: Copy> {
 
 const BAD_BAD_BAD: Bar = unsafe { MaybeUninit { uninit: () }.init };
 //~^ ERROR evaluation of constant value failed
+//~| constructing invalid value
 
 const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
 //~^ ERROR it is undefined behavior to use this value
+//~| constructing invalid value
 
 const BAD_BAD_ARRAY: [Bar; 1] = unsafe { MaybeUninit { uninit: () }.init };
 //~^ ERROR evaluation of constant value failed
+//~| constructing invalid value
+
+
+const READ_NEVER: () = unsafe {
+    let mem = [0u32; 8];
+    let ptr = mem.as_ptr().cast::<!>();
+    let _val = intrinsics::read_via_copy(ptr);
+    //~^ ERROR evaluation of constant value failed
+    //~| constructing invalid value
+};
+
 
 fn main() {}
diff --git a/tests/ui/consts/const-eval/ub-uninhabit.stderr b/tests/ui/consts/const-eval/ub-uninhabit.stderr
index f1ad0f04d3d..d26f4e03666 100644
--- a/tests/ui/consts/const-eval/ub-uninhabit.stderr
+++ b/tests/ui/consts/const-eval/ub-uninhabit.stderr
@@ -1,11 +1,11 @@
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-uninhabit.rs:16:35
+  --> $DIR/ub-uninhabit.rs:19:35
    |
 LL | const BAD_BAD_BAD: Bar = unsafe { MaybeUninit { uninit: () }.init };
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of uninhabited type `Bar`
 
 error[E0080]: it is undefined behavior to use this value
-  --> $DIR/ub-uninhabit.rs:19:1
+  --> $DIR/ub-uninhabit.rs:23:1
    |
 LL | const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
    | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a reference pointing to uninhabited type Bar
@@ -16,11 +16,17 @@ LL | const BAD_BAD_REF: &Bar = unsafe { mem::transmute(1usize) };
            }
 
 error[E0080]: evaluation of constant value failed
-  --> $DIR/ub-uninhabit.rs:22:42
+  --> $DIR/ub-uninhabit.rs:27:42
    |
 LL | const BAD_BAD_ARRAY: [Bar; 1] = unsafe { MaybeUninit { uninit: () }.init };
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value at [0]: encountered a value of uninhabited type `Bar`
 
-error: aborting due to 3 previous errors
+error[E0080]: evaluation of constant value failed
+  --> $DIR/ub-uninhabit.rs:35:16
+   |
+LL |     let _val = intrinsics::read_via_copy(ptr);
+   |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of the never type `!`
+
+error: aborting due to 4 previous errors
 
 For more information about this error, try `rustc --explain E0080`.
diff --git a/tests/ui/consts/drop-maybe_uninit.rs b/tests/ui/consts/drop-maybe_uninit.rs
new file mode 100644
index 00000000000..2fdeae5f185
--- /dev/null
+++ b/tests/ui/consts/drop-maybe_uninit.rs
@@ -0,0 +1,17 @@
+// build-pass
+
+pub const fn f<T, const N: usize>(_: [std::mem::MaybeUninit<T>; N]) {}
+
+pub struct Blubb<T>(*const T);
+
+pub const fn g<T, const N: usize>(_: [Blubb<T>; N]) {}
+
+pub struct Blorb<const N: usize>([String; N]);
+
+pub const fn h(_: Blorb<0>) {}
+
+pub struct Wrap(Blorb<0>);
+
+pub const fn i(_: Wrap) {}
+
+fn main() {}
diff --git a/tests/ui/consts/issue-105536-const-val-roundtrip-ptr-eq.rs b/tests/ui/consts/issue-105536-const-val-roundtrip-ptr-eq.rs
new file mode 100644
index 00000000000..1615399be32
--- /dev/null
+++ b/tests/ui/consts/issue-105536-const-val-roundtrip-ptr-eq.rs
@@ -0,0 +1,31 @@
+// run-pass
+
+// This does not reflect a stable guarantee (we guarantee very little for equality of pointers
+// around `const`), but it would be good to understand what is happening if these assertions ever
+// fail.
+use std::ptr::NonNull;
+use std::slice::from_raw_parts;
+
+const PTR_U8: *const u8 = NonNull::dangling().as_ptr();
+const CONST_U8_REF: &[u8] = unsafe { from_raw_parts(PTR_U8, 0) };
+const CONST_U8_PTR: *const u8 = unsafe { from_raw_parts(PTR_U8, 0).as_ptr() };
+static STATIC_U8_REF: &[u8] = unsafe { from_raw_parts(PTR_U8, 0) };
+
+const PTR_U16: *const u16 = NonNull::dangling().as_ptr();
+const CONST_U16_REF: &[u16] = unsafe { from_raw_parts(PTR_U16, 0) };
+
+const fn const_u8_fn() -> &'static [u8] {
+    unsafe { from_raw_parts(PTR_U8, 0) }
+}
+
+fn main() {
+    let ptr_u8 = unsafe { from_raw_parts(PTR_U8, 0) }.as_ptr();
+    let ptr_u16 = unsafe { from_raw_parts(PTR_U16, 0) }.as_ptr();
+
+    assert_eq!(ptr_u8, PTR_U8);
+    assert_eq!(ptr_u8, CONST_U8_PTR);
+    assert_eq!(ptr_u8, const_u8_fn().as_ptr());
+    assert_eq!(ptr_u8, STATIC_U8_REF.as_ptr());
+    assert_eq!(ptr_u16, CONST_U16_REF.as_ptr());
+    assert_eq!(ptr_u8, CONST_U8_REF.as_ptr());
+}
diff --git a/tests/ui/cross/cross-fn-cache-hole.stderr b/tests/ui/cross/cross-fn-cache-hole.stderr
index 7e15562b081..79d1713934b 100644
--- a/tests/ui/cross/cross-fn-cache-hole.stderr
+++ b/tests/ui/cross/cross-fn-cache-hole.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `i32: Bar<u32>` is not satisfied
 LL |     where i32: Foo<u32, A>
    |           ^^^^^^^^^^^^^^^^ the trait `Bar<u32>` is not implemented for `i32`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/cross-fn-cache-hole.rs:11:1
+   |
+LL | trait Bar<X> { }
+   | ^^^^^^^^^^^^
    = help: see issue #48214
    = help: add `#![feature(trivial_bounds)]` to the crate attributes to enable
 
diff --git a/tests/ui/derive-uninhabited-enum-38885.stderr b/tests/ui/derive-uninhabited-enum-38885.stderr
index dcdf8f8430f..3fabf446dc3 100644
--- a/tests/ui/derive-uninhabited-enum-38885.stderr
+++ b/tests/ui/derive-uninhabited-enum-38885.stderr
@@ -9,6 +9,7 @@ LL |     Void(Void),
    |
    = note: `Foo` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
    = note: `-W dead-code` implied by `-W unused`
+   = help: to override `-W unused` add `#[allow(dead_code)]`
 
 warning: 1 warning emitted
 
diff --git a/tests/ui/deriving/deriving-all-codegen.stdout b/tests/ui/deriving/deriving-all-codegen.stdout
index 6bfc859bfe8..3d9f8129d93 100644
--- a/tests/ui/deriving/deriving-all-codegen.stdout
+++ b/tests/ui/deriving/deriving-all-codegen.stdout
@@ -60,7 +60,7 @@ impl ::core::marker::StructuralEq for Empty { }
 impl ::core::cmp::Eq for Empty {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {}
 }
 #[automatically_derived]
@@ -135,7 +135,7 @@ impl ::core::marker::StructuralEq for Point { }
 impl ::core::cmp::Eq for Point {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<u32>;
     }
@@ -221,7 +221,7 @@ impl ::core::marker::StructuralEq for PackedPoint { }
 impl ::core::cmp::Eq for PackedPoint {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<u32>;
     }
@@ -334,7 +334,7 @@ impl ::core::marker::StructuralEq for Big { }
 impl ::core::cmp::Eq for Big {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<u32>;
     }
@@ -500,7 +500,7 @@ impl ::core::marker::StructuralEq for Unsized { }
 impl ::core::cmp::Eq for Unsized {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<[u32]>;
     }
@@ -615,7 +615,7 @@ impl<T: ::core::cmp::Eq + Trait, U: ::core::cmp::Eq> ::core::cmp::Eq for
     Generic<T, U> where T::A: ::core::cmp::Eq {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<T>;
         let _: ::core::cmp::AssertParamIsEq<T::A>;
@@ -738,7 +738,7 @@ impl<T: ::core::cmp::Eq + ::core::marker::Copy + Trait, U: ::core::cmp::Eq +
     T::A: ::core::cmp::Eq + ::core::marker::Copy {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<T>;
         let _: ::core::cmp::AssertParamIsEq<T::A>;
@@ -821,7 +821,7 @@ impl ::core::marker::StructuralEq for Enum0 { }
 impl ::core::cmp::Eq for Enum0 {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {}
 }
 #[automatically_derived]
@@ -892,7 +892,7 @@ impl ::core::marker::StructuralEq for Enum1 { }
 impl ::core::cmp::Eq for Enum1 {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<u32>;
     }
@@ -959,7 +959,7 @@ impl ::core::marker::StructuralEq for Fieldless1 { }
 impl ::core::cmp::Eq for Fieldless1 {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {}
 }
 #[automatically_derived]
@@ -1034,7 +1034,7 @@ impl ::core::marker::StructuralEq for Fieldless { }
 impl ::core::cmp::Eq for Fieldless {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {}
 }
 #[automatically_derived]
@@ -1142,7 +1142,7 @@ impl ::core::marker::StructuralEq for Mixed { }
 impl ::core::cmp::Eq for Mixed {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<u32>;
         let _: ::core::cmp::AssertParamIsEq<Option<u32>>;
@@ -1270,7 +1270,7 @@ impl ::core::marker::StructuralEq for Fielded { }
 impl ::core::cmp::Eq for Fielded {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<u32>;
         let _: ::core::cmp::AssertParamIsEq<bool>;
@@ -1393,7 +1393,7 @@ impl<T: ::core::cmp::Eq, U: ::core::cmp::Eq> ::core::cmp::Eq for
     EnumGeneric<T, U> {
     #[inline]
     #[doc(hidden)]
-    #[no_coverage]
+    #[coverage(off)]
     fn assert_receiver_is_total_eq(&self) -> () {
         let _: ::core::cmp::AssertParamIsEq<T>;
         let _: ::core::cmp::AssertParamIsEq<U>;
diff --git a/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.rs b/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.rs
index a686ed9c84e..b08e291621f 100644
--- a/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.rs
+++ b/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.rs
@@ -1,12 +1,12 @@
 #[diagnostic::non_existing_attribute]
 //~^ERROR `#[diagnostic]` attribute name space is experimental [E0658]
-//~|WARNING unknown diagnostic attribute [unknown_diagnostic_attributes]
+//~|WARNING unknown diagnostic attribute [unknown_or_malformed_diagnostic_attributes]
 pub trait Bar {
 }
 
 #[diagnostic::non_existing_attribute(with_option = "foo")]
 //~^ERROR `#[diagnostic]` attribute name space is experimental [E0658]
-//~|WARNING unknown diagnostic attribute [unknown_diagnostic_attributes]
+//~|WARNING unknown diagnostic attribute [unknown_or_malformed_diagnostic_attributes]
 struct Foo;
 
 fn main() {
diff --git a/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.stderr b/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.stderr
index 45c95cbb3c7..017d00e2c8e 100644
--- a/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.stderr
+++ b/tests/ui/diagnostic_namespace/feature-gate-diagnostic_namespace.stderr
@@ -4,7 +4,7 @@ error[E0658]: `#[diagnostic]` attribute name space is experimental
 LL | #[diagnostic::non_existing_attribute]
    |   ^^^^^^^^^^
    |
-   = note: see issue #94785 <https://github.com/rust-lang/rust/issues/94785> for more information
+   = note: see issue #111996 <https://github.com/rust-lang/rust/issues/111996> for more information
    = help: add `#![feature(diagnostic_namespace)]` to the crate attributes to enable
 
 error[E0658]: `#[diagnostic]` attribute name space is experimental
@@ -13,7 +13,7 @@ error[E0658]: `#[diagnostic]` attribute name space is experimental
 LL | #[diagnostic::non_existing_attribute(with_option = "foo")]
    |   ^^^^^^^^^^
    |
-   = note: see issue #94785 <https://github.com/rust-lang/rust/issues/94785> for more information
+   = note: see issue #111996 <https://github.com/rust-lang/rust/issues/111996> for more information
    = help: add `#![feature(diagnostic_namespace)]` to the crate attributes to enable
 
 warning: unknown diagnostic attribute
@@ -22,7 +22,7 @@ warning: unknown diagnostic attribute
 LL | #[diagnostic::non_existing_attribute]
    |               ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: `#[warn(unknown_diagnostic_attributes)]` on by default
+   = note: `#[warn(unknown_or_malformed_diagnostic_attributes)]` on by default
 
 warning: unknown diagnostic attribute
   --> $DIR/feature-gate-diagnostic_namespace.rs:7:15
diff --git a/tests/ui/diagnostic_namespace/non_existing_attributes_accepted.stderr b/tests/ui/diagnostic_namespace/non_existing_attributes_accepted.stderr
index 4f9b7ba2bcf..753077b365e 100644
--- a/tests/ui/diagnostic_namespace/non_existing_attributes_accepted.stderr
+++ b/tests/ui/diagnostic_namespace/non_existing_attributes_accepted.stderr
@@ -4,7 +4,7 @@ warning: unknown diagnostic attribute
 LL | #[diagnostic::non_existing_attribute]
    |               ^^^^^^^^^^^^^^^^^^^^^^
    |
-   = note: `#[warn(unknown_diagnostic_attributes)]` on by default
+   = note: `#[warn(unknown_or_malformed_diagnostic_attributes)]` on by default
 
 warning: unknown diagnostic attribute
   --> $DIR/non_existing_attributes_accepted.rs:8:15
diff --git a/tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.rs b/tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.rs
new file mode 100644
index 00000000000..00fb59d14d7
--- /dev/null
+++ b/tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.rs
@@ -0,0 +1,37 @@
+#![feature(diagnostic_namespace)]
+
+#[diagnostic::on_unimplemented(unsupported = "foo")]
+//~^WARN malformed `on_unimplemented` attribute
+//~|WARN malformed `on_unimplemented` attribute
+trait Foo {}
+
+#[diagnostic::on_unimplemented(message = "Baz")]
+//~^WARN `#[diagnostic::on_unimplemented]` can only be applied to trait definitions
+struct Bar {}
+
+#[diagnostic::on_unimplemented(message = "Boom", unsupported = "Bar")]
+//~^WARN malformed `on_unimplemented` attribute
+//~|WARN malformed `on_unimplemented` attribute
+trait Baz {}
+
+#[diagnostic::on_unimplemented(message = "Boom", on(_Self = "i32", message = "whatever"))]
+//~^WARN malformed `on_unimplemented` attribute
+//~|WARN malformed `on_unimplemented` attribute
+trait Boom {}
+
+#[diagnostic::on_unimplemented = "boom"]
+//~^WARN malformed `on_unimplemented` attribute
+trait Doom {}
+
+fn take_foo(_: impl Foo) {}
+fn take_baz(_: impl Baz) {}
+fn take_boom(_: impl Boom) {}
+
+fn main() {
+    take_foo(1_i32);
+    //~^ERROR the trait bound `i32: Foo` is not satisfied
+    take_baz(1_i32);
+    //~^ERROR Boom
+    take_boom(1_i32);
+    //~^ERROR Boom
+}
diff --git a/tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.stderr b/tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.stderr
new file mode 100644
index 00000000000..bb1b29ef248
--- /dev/null
+++ b/tests/ui/diagnostic_namespace/on_unimplemented/do_not_fail_parsing_on_invalid_options_1.stderr
@@ -0,0 +1,110 @@
+warning: `#[diagnostic::on_unimplemented]` can only be applied to trait definitions
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:8:1
+   |
+LL | #[diagnostic::on_unimplemented(message = "Baz")]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(unknown_or_malformed_diagnostic_attributes)]` on by default
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:3:32
+   |
+LL | #[diagnostic::on_unimplemented(unsupported = "foo")]
+   |                                ^^^^^^^^^^^^^^^^^^^
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:12:50
+   |
+LL | #[diagnostic::on_unimplemented(message = "Boom", unsupported = "Bar")]
+   |                                                  ^^^^^^^^^^^^^^^^^^^
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:17:50
+   |
+LL | #[diagnostic::on_unimplemented(message = "Boom", on(_Self = "i32", message = "whatever"))]
+   |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:22:1
+   |
+LL | #[diagnostic::on_unimplemented = "boom"]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:3:32
+   |
+LL | #[diagnostic::on_unimplemented(unsupported = "foo")]
+   |                                ^^^^^^^^^^^^^^^^^^^
+
+error[E0277]: the trait bound `i32: Foo` is not satisfied
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:31:14
+   |
+LL |     take_foo(1_i32);
+   |     -------- ^^^^^ the trait `Foo` is not implemented for `i32`
+   |     |
+   |     required by a bound introduced by this call
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:6:1
+   |
+LL | trait Foo {}
+   | ^^^^^^^^^
+note: required by a bound in `take_foo`
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:26:21
+   |
+LL | fn take_foo(_: impl Foo) {}
+   |                     ^^^ required by this bound in `take_foo`
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:12:50
+   |
+LL | #[diagnostic::on_unimplemented(message = "Boom", unsupported = "Bar")]
+   |                                                  ^^^^^^^^^^^^^^^^^^^
+
+error[E0277]: Boom
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:33:14
+   |
+LL |     take_baz(1_i32);
+   |     -------- ^^^^^ the trait `Baz` is not implemented for `i32`
+   |     |
+   |     required by a bound introduced by this call
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:15:1
+   |
+LL | trait Baz {}
+   | ^^^^^^^^^
+note: required by a bound in `take_baz`
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:27:21
+   |
+LL | fn take_baz(_: impl Baz) {}
+   |                     ^^^ required by this bound in `take_baz`
+
+warning: malformed `on_unimplemented` attribute
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:17:50
+   |
+LL | #[diagnostic::on_unimplemented(message = "Boom", on(_Self = "i32", message = "whatever"))]
+   |                                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error[E0277]: Boom
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:35:15
+   |
+LL |     take_boom(1_i32);
+   |     --------- ^^^^^ the trait `Boom` is not implemented for `i32`
+   |     |
+   |     required by a bound introduced by this call
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:20:1
+   |
+LL | trait Boom {}
+   | ^^^^^^^^^^
+note: required by a bound in `take_boom`
+  --> $DIR/do_not_fail_parsing_on_invalid_options_1.rs:28:22
+   |
+LL | fn take_boom(_: impl Boom) {}
+   |                      ^^^^ required by this bound in `take_boom`
+
+error: aborting due to 3 previous errors; 8 warnings emitted
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.rs b/tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.rs
new file mode 100644
index 00000000000..609a840c118
--- /dev/null
+++ b/tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.rs
@@ -0,0 +1,7 @@
+#[diagnostic::on_unimplemented(message = "Foo")]
+//~^ERROR `#[diagnostic]` attribute name space is experimental [E0658]
+pub trait Bar {
+}
+
+fn main() {
+}
diff --git a/tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.stderr b/tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.stderr
new file mode 100644
index 00000000000..21f02e3a73b
--- /dev/null
+++ b/tests/ui/diagnostic_namespace/on_unimplemented/feature-gate-diagnostic_on_unimplemented.stderr
@@ -0,0 +1,12 @@
+error[E0658]: `#[diagnostic]` attribute name space is experimental
+  --> $DIR/feature-gate-diagnostic_on_unimplemented.rs:1:3
+   |
+LL | #[diagnostic::on_unimplemented(message = "Foo")]
+   |   ^^^^^^^^^^
+   |
+   = note: see issue #111996 <https://github.com/rust-lang/rust/issues/111996> for more information
+   = help: add `#![feature(diagnostic_namespace)]` to the crate attributes to enable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.rs b/tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.rs
new file mode 100644
index 00000000000..797edbc9ec5
--- /dev/null
+++ b/tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.rs
@@ -0,0 +1,11 @@
+#![feature(diagnostic_namespace)]
+
+#[diagnostic::on_unimplemented(message = "Foo", label = "Bar", note = "Baz")]
+trait Foo {}
+
+fn takes_foo(_: impl Foo) {}
+
+fn main() {
+    takes_foo(());
+    //~^ERROR Foo
+}
diff --git a/tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.stderr b/tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.stderr
new file mode 100644
index 00000000000..549c7caa720
--- /dev/null
+++ b/tests/ui/diagnostic_namespace/on_unimplemented/on_unimplemented_simple.stderr
@@ -0,0 +1,24 @@
+error[E0277]: Foo
+  --> $DIR/on_unimplemented_simple.rs:9:15
+   |
+LL |     takes_foo(());
+   |     --------- ^^ Bar
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = help: the trait `Foo` is not implemented for `()`
+   = note: Baz
+help: this trait has no implementations, consider adding one
+  --> $DIR/on_unimplemented_simple.rs:4:1
+   |
+LL | trait Foo {}
+   | ^^^^^^^^^
+note: required by a bound in `takes_foo`
+  --> $DIR/on_unimplemented_simple.rs:6:22
+   |
+LL | fn takes_foo(_: impl Foo) {}
+   |                      ^^^ required by this bound in `takes_foo`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/drop-bounds/drop-bounds-impl-drop.rs b/tests/ui/drop-bounds/drop-bounds-impl-drop.rs
index 063efc7b31a..15aebdf1bc9 100644
--- a/tests/ui/drop-bounds/drop-bounds-impl-drop.rs
+++ b/tests/ui/drop-bounds/drop-bounds-impl-drop.rs
@@ -2,13 +2,13 @@
 #![deny(drop_bounds)]
 // As a special exemption, `impl Drop` in the return position raises no error.
 // This allows a convenient way to return an unnamed drop guard.
-fn voldemort_type() -> impl Drop {
-  struct Voldemort;
-  impl Drop for Voldemort {
+fn unnameable_type() -> impl Drop {
+  struct Unnameable;
+  impl Drop for Unnameable {
     fn drop(&mut self) {}
   }
-  Voldemort
+  Unnameable
 }
 fn main() {
-  let _ = voldemort_type();
+  let _ = unnameable_type();
 }
diff --git a/tests/ui/dst/dst-bad-coerce1.stderr b/tests/ui/dst/dst-bad-coerce1.stderr
index 2c75518c298..455d15e935f 100644
--- a/tests/ui/dst/dst-bad-coerce1.stderr
+++ b/tests/ui/dst/dst-bad-coerce1.stderr
@@ -15,6 +15,11 @@ error[E0277]: the trait bound `Foo: Bar` is not satisfied
 LL |     let f3: &Fat<dyn Bar> = f2;
    |                             ^^ the trait `Bar` is not implemented for `Foo`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/dst-bad-coerce1.rs:10:1
+   |
+LL | trait Bar { fn bar(&self) {} }
+   | ^^^^^^^^^
    = note: required for the cast from `&Fat<Foo>` to `&Fat<dyn Bar>`
 
 error[E0308]: mismatched types
@@ -34,6 +39,11 @@ error[E0277]: the trait bound `Foo: Bar` is not satisfied
 LL |     let f3: &(dyn Bar,) = f2;
    |                           ^^ the trait `Bar` is not implemented for `Foo`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/dst-bad-coerce1.rs:10:1
+   |
+LL | trait Bar { fn bar(&self) {} }
+   | ^^^^^^^^^
    = note: required for the cast from `&(Foo,)` to `&(dyn Bar,)`
 
 error: aborting due to 4 previous errors
diff --git a/tests/ui/dyn-star/error.stderr b/tests/ui/dyn-star/error.stderr
index ae54b9ca707..e039bb6f1c8 100644
--- a/tests/ui/dyn-star/error.stderr
+++ b/tests/ui/dyn-star/error.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `{integer}: Foo` is not satisfied
    |
 LL |     let dyn_i: dyn* Foo = i;
    |                           ^ the trait `Foo` is not implemented for `{integer}`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/error.rs:6:1
+   |
+LL | trait Foo {}
+   | ^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/error-codes/E0040.stderr b/tests/ui/error-codes/E0040.stderr
index 9fcda1a9385..839be79d28d 100644
--- a/tests/ui/error-codes/E0040.stderr
+++ b/tests/ui/error-codes/E0040.stderr
@@ -2,10 +2,12 @@ error[E0040]: explicit use of destructor method
   --> $DIR/E0040.rs:16:7
    |
 LL |     x.drop();
-   |     --^^^^--
-   |     | |
-   |     | explicit destructor calls not allowed
-   |     help: consider using `drop` function: `drop(x)`
+   |       ^^^^ explicit destructor calls not allowed
+   |
+help: consider using `drop` function
+   |
+LL |     drop(x);
+   |     +++++ ~
 
 error: aborting due to previous error
 
diff --git a/tests/ui/error-codes/E0054.stderr b/tests/ui/error-codes/E0054.stderr
index 6b1092760fb..ea81f4476a7 100644
--- a/tests/ui/error-codes/E0054.stderr
+++ b/tests/ui/error-codes/E0054.stderr
@@ -1,4 +1,4 @@
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `i32` as `bool`
   --> $DIR/E0054.rs:3:24
    |
 LL |     let x_is_nonzero = x as bool;
diff --git a/tests/ui/error-codes/E0220.stderr b/tests/ui/error-codes/E0220.stderr
index 11763ce788d..e03eadacae4 100644
--- a/tests/ui/error-codes/E0220.stderr
+++ b/tests/ui/error-codes/E0220.stderr
@@ -2,7 +2,7 @@ error[E0220]: associated type `F` not found for `Trait`
   --> $DIR/E0220.rs:5:22
    |
 LL | type Foo = dyn Trait<F=i32>;
-   |                      ^ associated type `F` not found
+   |                      ^ help: `Trait` has the following associated type: `Bar`
 
 error[E0191]: the value of the associated type `Bar` (from trait `Trait`) must be specified
   --> $DIR/E0220.rs:5:16
diff --git a/tests/ui/error-codes/E0277.stderr b/tests/ui/error-codes/E0277.stderr
index 440e43dff81..0b0d2b09720 100644
--- a/tests/ui/error-codes/E0277.stderr
+++ b/tests/ui/error-codes/E0277.stderr
@@ -21,6 +21,11 @@ LL |     some_func(5i32);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/E0277.rs:3:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 note: required by a bound in `some_func`
   --> $DIR/E0277.rs:7:17
    |
diff --git a/tests/ui/error-codes/E0401.stderr b/tests/ui/error-codes/E0401.stderr
index fa4b91cacef..928c8d11d20 100644
--- a/tests/ui/error-codes/E0401.stderr
+++ b/tests/ui/error-codes/E0401.stderr
@@ -1,26 +1,26 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/E0401.rs:4:39
    |
 LL | fn foo<T>(x: T) {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 LL |     fn bfnr<U, V: Baz<U>, W: Fn()>(y: T) {
-   |             -                         ^ use of generic parameter from outer function
+   |             -                         ^ use of generic parameter from outer item
    |             |
-   |             help: try using a local generic parameter instead: `T,`
+   |             help: try introducing a local generic parameter here: `T,`
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/E0401.rs:9:16
    |
 LL | fn foo<T>(x: T) {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 ...
 LL |     fn baz<U,
-   |            - help: try using a local generic parameter instead: `T,`
+   |            - help: try introducing a local generic parameter here: `T,`
 ...
 LL |            (y: T) {
-   |                ^ use of generic parameter from outer function
+   |                ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/E0401.rs:24:25
    |
 LL | impl<T> Iterator for A<T> {
@@ -29,8 +29,8 @@ LL | impl<T> Iterator for A<T> {
 LL |         fn helper(sel: &Self) -> u8 {
    |                         ^^^^
    |                         |
-   |                         use of generic parameter from outer function
-   |                         use a type here instead
+   |                         use of generic parameter from outer item
+   |                         refer to the type directly here instead
 
 error[E0282]: type annotations needed
   --> $DIR/E0401.rs:11:5
diff --git a/tests/ui/error-codes/E0445.rs b/tests/ui/error-codes/E0445.rs
deleted file mode 100644
index 9f29c81673e..00000000000
--- a/tests/ui/error-codes/E0445.rs
+++ /dev/null
@@ -1,23 +0,0 @@
-#![feature(type_privacy_lints)]
-#[warn(private_bounds)]
-#[warn(private_interfaces)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
-
-trait Foo {
-    fn dummy(&self) { }
-}
-
-pub trait Bar : Foo {}
-//~^ ERROR private trait `Foo` in public interface [E0445]
-//~| WARNING trait `Foo` is more private than the item `Bar`
-pub struct Bar2<T: Foo>(pub T);
-//~^ ERROR private trait `Foo` in public interface [E0445]
-//~| WARNING trait `Foo` is more private than the item `Bar2`
-pub fn foo<T: Foo> (t: T) {}
-//~^ ERROR private trait `Foo` in public interface [E0445]
-//~| WARNING trait `Foo` is more private than the item `foo`
-
-fn main() {}
diff --git a/tests/ui/error-codes/E0445.stderr b/tests/ui/error-codes/E0445.stderr
deleted file mode 100644
index 4f940868ff9..00000000000
--- a/tests/ui/error-codes/E0445.stderr
+++ /dev/null
@@ -1,71 +0,0 @@
-error[E0445]: private trait `Foo` in public interface
-  --> $DIR/E0445.rs:13:1
-   |
-LL | trait Foo {
-   | --------- `Foo` declared as private
-...
-LL | pub trait Bar : Foo {}
-   | ^^^^^^^^^^^^^^^^^^^ can't leak private trait
-
-warning: trait `Foo` is more private than the item `Bar`
-  --> $DIR/E0445.rs:13:1
-   |
-LL | pub trait Bar : Foo {}
-   | ^^^^^^^^^^^^^^^^^^^ trait `Bar` is reachable at visibility `pub`
-   |
-note: but trait `Foo` is only usable at visibility `pub(crate)`
-  --> $DIR/E0445.rs:9:1
-   |
-LL | trait Foo {
-   | ^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/E0445.rs:2:8
-   |
-LL | #[warn(private_bounds)]
-   |        ^^^^^^^^^^^^^^
-
-error[E0445]: private trait `Foo` in public interface
-  --> $DIR/E0445.rs:16:1
-   |
-LL | trait Foo {
-   | --------- `Foo` declared as private
-...
-LL | pub struct Bar2<T: Foo>(pub T);
-   | ^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
-
-warning: trait `Foo` is more private than the item `Bar2`
-  --> $DIR/E0445.rs:16:1
-   |
-LL | pub struct Bar2<T: Foo>(pub T);
-   | ^^^^^^^^^^^^^^^^^^^^^^^ struct `Bar2` is reachable at visibility `pub`
-   |
-note: but trait `Foo` is only usable at visibility `pub(crate)`
-  --> $DIR/E0445.rs:9:1
-   |
-LL | trait Foo {
-   | ^^^^^^^^^
-
-error[E0445]: private trait `Foo` in public interface
-  --> $DIR/E0445.rs:19:1
-   |
-LL | trait Foo {
-   | --------- `Foo` declared as private
-...
-LL | pub fn foo<T: Foo> (t: T) {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
-
-warning: trait `Foo` is more private than the item `foo`
-  --> $DIR/E0445.rs:19:1
-   |
-LL | pub fn foo<T: Foo> (t: T) {}
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^ function `foo` is reachable at visibility `pub`
-   |
-note: but trait `Foo` is only usable at visibility `pub(crate)`
-  --> $DIR/E0445.rs:9:1
-   |
-LL | trait Foo {
-   | ^^^^^^^^^
-
-error: aborting due to 3 previous errors; 3 warnings emitted
-
-For more information about this error, try `rustc --explain E0445`.
diff --git a/tests/ui/error-codes/E0446.rs b/tests/ui/error-codes/E0446.rs
index f61c7e54616..6d6c4f97c06 100644
--- a/tests/ui/error-codes/E0446.rs
+++ b/tests/ui/error-codes/E0446.rs
@@ -1,9 +1,14 @@
-mod foo {
-    struct Bar(u32);
+struct Bar;
+trait PrivTr {}
 
-    pub fn bar() -> Bar { //~ ERROR E0446
-        Bar(0)
-    }
+pub trait PubTr {
+    type Alias1;
+    type Alias2;
+}
+
+impl PubTr for u8 {
+    type Alias1 = Bar; //~ ERROR E0446
+    type Alias2 = Box<dyn PrivTr>; //~ ERROR E0446
 }
 
 fn main() {}
diff --git a/tests/ui/error-codes/E0446.stderr b/tests/ui/error-codes/E0446.stderr
index b6a195c40a9..2951e69d1c2 100644
--- a/tests/ui/error-codes/E0446.stderr
+++ b/tests/ui/error-codes/E0446.stderr
@@ -1,12 +1,21 @@
 error[E0446]: private type `Bar` in public interface
-  --> $DIR/E0446.rs:4:5
+  --> $DIR/E0446.rs:10:5
    |
-LL |     struct Bar(u32);
-   |     ---------- `Bar` declared as private
-LL |
-LL |     pub fn bar() -> Bar {
-   |     ^^^^^^^^^^^^^^^^^^^ can't leak private type
+LL | struct Bar;
+   | ---------- `Bar` declared as private
+...
+LL |     type Alias1 = Bar;
+   |     ^^^^^^^^^^^ can't leak private type
 
-error: aborting due to previous error
+error[E0446]: private trait `PrivTr` in public interface
+  --> $DIR/E0446.rs:11:5
+   |
+LL | trait PrivTr {}
+   | ------------ `PrivTr` declared as private
+...
+LL |     type Alias2 = Box<dyn PrivTr>;
+   |     ^^^^^^^^^^^ can't leak private trait
+
+error: aborting due to 2 previous errors
 
 For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/error-codes/E0602.rs b/tests/ui/error-codes/E0602.rs
index 8fadce526d9..77d28838a10 100644
--- a/tests/ui/error-codes/E0602.rs
+++ b/tests/ui/error-codes/E0602.rs
@@ -1,6 +1,8 @@
 // compile-flags:-D bogus
+// check-pass
 
 // error-pattern:E0602
 // error-pattern:requested on the command line with `-D bogus`
+// error-pattern:`#[warn(unknown_lints)]` on by default
 
 fn main() {}
diff --git a/tests/ui/error-codes/E0602.stderr b/tests/ui/error-codes/E0602.stderr
index 2b372263345..60ecec7cdd7 100644
--- a/tests/ui/error-codes/E0602.stderr
+++ b/tests/ui/error-codes/E0602.stderr
@@ -1,11 +1,16 @@
-error[E0602]: unknown lint: `bogus`
+warning[E0602]: unknown lint: `bogus`
    |
    = note: requested on the command line with `-D bogus`
+   = note: `#[warn(unknown_lints)]` on by default
 
-error[E0602]: unknown lint: `bogus`
+warning[E0602]: unknown lint: `bogus`
    |
    = note: requested on the command line with `-D bogus`
 
-error: aborting due to 2 previous errors
+warning[E0602]: unknown lint: `bogus`
+   |
+   = note: requested on the command line with `-D bogus`
+
+warning: 3 warnings emitted
 
 For more information about this error, try `rustc --explain E0602`.
diff --git a/tests/ui/error-codes/E0609-private-method.rs b/tests/ui/error-codes/E0609-private-method.rs
new file mode 100644
index 00000000000..dfa97ad9a6f
--- /dev/null
+++ b/tests/ui/error-codes/E0609-private-method.rs
@@ -0,0 +1,16 @@
+// This error is an E0609 and *not* an E0615 because the fact that the method exists is not
+// relevant.
+mod foo {
+    pub struct Foo {
+        x: u32,
+    }
+
+    impl Foo {
+        fn method(&self) {}
+    }
+}
+
+fn main() {
+    let f = foo::Foo { x: 0 };
+    f.method; //~ ERROR E0609
+}
diff --git a/tests/ui/error-codes/E0609-private-method.stderr b/tests/ui/error-codes/E0609-private-method.stderr
new file mode 100644
index 00000000000..d2a11e90627
--- /dev/null
+++ b/tests/ui/error-codes/E0609-private-method.stderr
@@ -0,0 +1,9 @@
+error[E0609]: no field `method` on type `Foo`
+  --> $DIR/E0609-private-method.rs:15:7
+   |
+LL |     f.method;
+   |       ^^^^^^ unknown field
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0609`.
diff --git a/tests/ui/error-festival.stderr b/tests/ui/error-festival.stderr
index e8ee1d96942..74a2bc8d768 100644
--- a/tests/ui/error-festival.stderr
+++ b/tests/ui/error-festival.stderr
@@ -59,7 +59,7 @@ error[E0605]: non-primitive cast: `u8` as `Vec<u8>`
 LL |     x as Vec<u8>;
    |     ^^^^^^^^^^^^ an `as` expression can only be used to convert between primitive types or to coerce to a specific trait object
 
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `{integer}` as `bool`
   --> $DIR/error-festival.rs:33:24
    |
 LL |     let x_is_nonzero = x as bool;
diff --git a/tests/ui/explicit/explicit-call-to-dtor.stderr b/tests/ui/explicit/explicit-call-to-dtor.stderr
index f3c9bf6cccd..f2e0b73b6c5 100644
--- a/tests/ui/explicit/explicit-call-to-dtor.stderr
+++ b/tests/ui/explicit/explicit-call-to-dtor.stderr
@@ -2,10 +2,12 @@ error[E0040]: explicit use of destructor method
   --> $DIR/explicit-call-to-dtor.rs:15:7
    |
 LL |     x.drop();
-   |     --^^^^--
-   |     | |
-   |     | explicit destructor calls not allowed
-   |     help: consider using `drop` function: `drop(x)`
+   |       ^^^^ explicit destructor calls not allowed
+   |
+help: consider using `drop` function
+   |
+LL |     drop(x);
+   |     +++++ ~
 
 error: aborting due to previous error
 
diff --git a/tests/ui/explicit/explicit-call-to-supertrait-dtor.stderr b/tests/ui/explicit/explicit-call-to-supertrait-dtor.stderr
index c7067117349..5fa42fcf191 100644
--- a/tests/ui/explicit/explicit-call-to-supertrait-dtor.stderr
+++ b/tests/ui/explicit/explicit-call-to-supertrait-dtor.stderr
@@ -2,10 +2,12 @@ error[E0040]: explicit use of destructor method
   --> $DIR/explicit-call-to-supertrait-dtor.rs:22:14
    |
 LL |         self.drop();
-   |         -----^^^^--
-   |         |    |
-   |         |    explicit destructor calls not allowed
-   |         help: consider using `drop` function: `drop(self)`
+   |              ^^^^ explicit destructor calls not allowed
+   |
+help: consider using `drop` function
+   |
+LL |         drop(self);
+   |         +++++    ~
 
 error: aborting due to previous error
 
diff --git a/tests/ui/expr/if/bad-if-let-suggestion.rs b/tests/ui/expr/if/bad-if-let-suggestion.rs
index a8b2a283039..99d584ac7a5 100644
--- a/tests/ui/expr/if/bad-if-let-suggestion.rs
+++ b/tests/ui/expr/if/bad-if-let-suggestion.rs
@@ -4,9 +4,8 @@
 fn a() {
     if let x = 1 && i = 2 {}
     //~^ ERROR cannot find value `i` in this scope
-    //~| ERROR `let` expressions in this position are unstable
     //~| ERROR mismatched types
-    //~| ERROR `let` expressions are not supported here
+    //~| ERROR expected expression, found `let` statement
 }
 
 fn b() {
diff --git a/tests/ui/expr/if/bad-if-let-suggestion.stderr b/tests/ui/expr/if/bad-if-let-suggestion.stderr
index 3a53a20b453..20ac9ca76ba 100644
--- a/tests/ui/expr/if/bad-if-let-suggestion.stderr
+++ b/tests/ui/expr/if/bad-if-let-suggestion.stderr
@@ -1,4 +1,4 @@
-error: `let` expressions are not supported here
+error: expected expression, found `let` statement
   --> $DIR/bad-if-let-suggestion.rs:5:8
    |
 LL |     if let x = 1 && i = 2 {}
@@ -13,7 +13,7 @@ LL |     if let x = 1 && i = 2 {}
    |                     ^ not found in this scope
 
 error[E0425]: cannot find value `i` in this scope
-  --> $DIR/bad-if-let-suggestion.rs:13:9
+  --> $DIR/bad-if-let-suggestion.rs:12:9
    |
 LL | fn a() {
    | ------ similarly named function `a` defined here
@@ -22,7 +22,7 @@ LL |     if (i + j) = i {}
    |         ^ help: a function with a similar name exists: `a`
 
 error[E0425]: cannot find value `j` in this scope
-  --> $DIR/bad-if-let-suggestion.rs:13:13
+  --> $DIR/bad-if-let-suggestion.rs:12:13
    |
 LL | fn a() {
    | ------ similarly named function `a` defined here
@@ -31,7 +31,7 @@ LL |     if (i + j) = i {}
    |             ^ help: a function with a similar name exists: `a`
 
 error[E0425]: cannot find value `i` in this scope
-  --> $DIR/bad-if-let-suggestion.rs:13:18
+  --> $DIR/bad-if-let-suggestion.rs:12:18
    |
 LL | fn a() {
    | ------ similarly named function `a` defined here
@@ -40,7 +40,7 @@ LL |     if (i + j) = i {}
    |                  ^ help: a function with a similar name exists: `a`
 
 error[E0425]: cannot find value `x` in this scope
-  --> $DIR/bad-if-let-suggestion.rs:20:8
+  --> $DIR/bad-if-let-suggestion.rs:19:8
    |
 LL | fn a() {
    | ------ similarly named function `a` defined here
@@ -48,15 +48,6 @@ LL | fn a() {
 LL |     if x[0] = 1 {}
    |        ^ help: a function with a similar name exists: `a`
 
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/bad-if-let-suggestion.rs:5:8
-   |
-LL |     if let x = 1 && i = 2 {}
-   |        ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
 error[E0308]: mismatched types
   --> $DIR/bad-if-let-suggestion.rs:5:8
    |
@@ -68,7 +59,7 @@ help: you might have meant to compare for equality
 LL |     if let x = 1 && i == 2 {}
    |                        +
 
-error: aborting due to 8 previous errors
+error: aborting due to 7 previous errors
 
-Some errors have detailed explanations: E0308, E0425, E0658.
+Some errors have detailed explanations: E0308, E0425.
 For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/feature-gates/feature-gate-coverage-attribute.rs b/tests/ui/feature-gates/feature-gate-coverage-attribute.rs
new file mode 100644
index 00000000000..0a463755f13
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-coverage-attribute.rs
@@ -0,0 +1,14 @@
+#![crate_type = "lib"]
+#![feature(no_coverage)] //~ ERROR feature has been removed [E0557]
+
+#[derive(PartialEq, Eq)] // ensure deriving `Eq` does not enable `feature(coverage)`
+struct Foo {
+    a: u8,
+    b: u32,
+}
+
+#[coverage(off)] //~ ERROR the `#[coverage]` attribute is an experimental feature
+fn requires_feature_coverage() -> bool {
+    let bar = Foo { a: 0, b: 0 };
+    bar == Foo { a: 0, b: 0 }
+}
diff --git a/tests/ui/feature-gates/feature-gate-coverage-attribute.stderr b/tests/ui/feature-gates/feature-gate-coverage-attribute.stderr
new file mode 100644
index 00000000000..0131a19a39d
--- /dev/null
+++ b/tests/ui/feature-gates/feature-gate-coverage-attribute.stderr
@@ -0,0 +1,21 @@
+error[E0557]: feature has been removed
+  --> $DIR/feature-gate-coverage-attribute.rs:2:12
+   |
+LL | #![feature(no_coverage)]
+   |            ^^^^^^^^^^^ feature has been removed
+   |
+   = note: renamed to `coverage_attribute`
+
+error[E0658]: the `#[coverage]` attribute is an experimental feature
+  --> $DIR/feature-gate-coverage-attribute.rs:10:1
+   |
+LL | #[coverage(off)]
+   | ^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #84605 <https://github.com/rust-lang/rust/issues/84605> for more information
+   = help: add `#![feature(coverage_attribute)]` to the crate attributes to enable
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0557, E0658.
+For more information about an error, try `rustc --explain E0557`.
diff --git a/tests/ui/feature-gates/feature-gate-no_coverage.rs b/tests/ui/feature-gates/feature-gate-no_coverage.rs
deleted file mode 100644
index fd4c6f76059..00000000000
--- a/tests/ui/feature-gates/feature-gate-no_coverage.rs
+++ /dev/null
@@ -1,13 +0,0 @@
-#![crate_type = "lib"]
-
-#[derive(PartialEq, Eq)] // ensure deriving `Eq` does not enable `feature(no_coverage)`
-struct Foo {
-    a: u8,
-    b: u32,
-}
-
-#[no_coverage] //~ ERROR the `#[no_coverage]` attribute is an experimental feature
-fn requires_feature_no_coverage() -> bool {
-    let bar = Foo { a: 0, b: 0 };
-    bar == Foo { a: 0, b: 0 }
-}
diff --git a/tests/ui/feature-gates/feature-gate-no_coverage.stderr b/tests/ui/feature-gates/feature-gate-no_coverage.stderr
deleted file mode 100644
index f7167e0b771..00000000000
--- a/tests/ui/feature-gates/feature-gate-no_coverage.stderr
+++ /dev/null
@@ -1,12 +0,0 @@
-error[E0658]: the `#[no_coverage]` attribute is an experimental feature
-  --> $DIR/feature-gate-no_coverage.rs:9:1
-   |
-LL | #[no_coverage]
-   | ^^^^^^^^^^^^^^
-   |
-   = note: see issue #84605 <https://github.com/rust-lang/rust/issues/84605> for more information
-   = help: add `#![feature(no_coverage)]` to the crate attributes to enable
-
-error: aborting due to previous error
-
-For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/feature-gates/feature-gate-type_privacy_lints.rs b/tests/ui/feature-gates/feature-gate-type_privacy_lints.rs
index aad64c9d073..8bb9736f1b4 100644
--- a/tests/ui/feature-gates/feature-gate-type_privacy_lints.rs
+++ b/tests/ui/feature-gates/feature-gate-type_privacy_lints.rs
@@ -1,11 +1,5 @@
 // check-pass
 
-#![warn(private_interfaces)] //~ WARN unknown lint
-                             //~| WARN unknown lint
-                             //~| WARN unknown lint
-#![warn(private_bounds)] //~ WARN unknown lint
-                         //~| WARN unknown lint
-                         //~| WARN unknown lint
 #![warn(unnameable_types)] //~ WARN unknown lint
                            //~| WARN unknown lint
                            //~| WARN unknown lint
diff --git a/tests/ui/feature-gates/feature-gate-type_privacy_lints.stderr b/tests/ui/feature-gates/feature-gate-type_privacy_lints.stderr
index 79cc974cca1..4349fea6f89 100644
--- a/tests/ui/feature-gates/feature-gate-type_privacy_lints.stderr
+++ b/tests/ui/feature-gates/feature-gate-type_privacy_lints.stderr
@@ -1,26 +1,5 @@
-warning: unknown lint: `private_interfaces`
-  --> $DIR/feature-gate-type_privacy_lints.rs:3:1
-   |
-LL | #![warn(private_interfaces)]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: the `private_interfaces` lint is unstable
-   = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
-   = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
-   = note: `#[warn(unknown_lints)]` on by default
-
-warning: unknown lint: `private_bounds`
-  --> $DIR/feature-gate-type_privacy_lints.rs:6:1
-   |
-LL | #![warn(private_bounds)]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: the `private_bounds` lint is unstable
-   = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
-   = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
-
 warning: unknown lint: `unnameable_types`
-  --> $DIR/feature-gate-type_privacy_lints.rs:9:1
+  --> $DIR/feature-gate-type_privacy_lints.rs:3:1
    |
 LL | #![warn(unnameable_types)]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -28,29 +7,10 @@ LL | #![warn(unnameable_types)]
    = note: the `unnameable_types` lint is unstable
    = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
    = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
-
-warning: unknown lint: `private_interfaces`
-  --> $DIR/feature-gate-type_privacy_lints.rs:3:1
-   |
-LL | #![warn(private_interfaces)]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: the `private_interfaces` lint is unstable
-   = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
-   = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
-
-warning: unknown lint: `private_bounds`
-  --> $DIR/feature-gate-type_privacy_lints.rs:6:1
-   |
-LL | #![warn(private_bounds)]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: the `private_bounds` lint is unstable
-   = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
-   = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
+   = note: `#[warn(unknown_lints)]` on by default
 
 warning: unknown lint: `unnameable_types`
-  --> $DIR/feature-gate-type_privacy_lints.rs:9:1
+  --> $DIR/feature-gate-type_privacy_lints.rs:3:1
    |
 LL | #![warn(unnameable_types)]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -59,28 +19,8 @@ LL | #![warn(unnameable_types)]
    = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
    = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
 
-warning: unknown lint: `private_interfaces`
-  --> $DIR/feature-gate-type_privacy_lints.rs:3:1
-   |
-LL | #![warn(private_interfaces)]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: the `private_interfaces` lint is unstable
-   = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
-   = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
-
-warning: unknown lint: `private_bounds`
-  --> $DIR/feature-gate-type_privacy_lints.rs:6:1
-   |
-LL | #![warn(private_bounds)]
-   | ^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = note: the `private_bounds` lint is unstable
-   = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
-   = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
-
 warning: unknown lint: `unnameable_types`
-  --> $DIR/feature-gate-type_privacy_lints.rs:9:1
+  --> $DIR/feature-gate-type_privacy_lints.rs:3:1
    |
 LL | #![warn(unnameable_types)]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -89,5 +29,5 @@ LL | #![warn(unnameable_types)]
    = note: see issue #48054 <https://github.com/rust-lang/rust/issues/48054> for more information
    = help: add `#![feature(type_privacy_lints)]` to the crate attributes to enable
 
-warning: 9 warnings emitted
+warning: 3 warnings emitted
 
diff --git a/tests/ui/feature-gates/print-with-path.cfg.stderr b/tests/ui/feature-gates/print-with-path.cfg.stderr
deleted file mode 100644
index a6c51baa320..00000000000
--- a/tests/ui/feature-gates/print-with-path.cfg.stderr
+++ /dev/null
@@ -1,2 +0,0 @@
-error: the `-Z unstable-options` flag must also be passed to enable the path print option
-
diff --git a/tests/ui/feature-gates/print-with-path.rs b/tests/ui/feature-gates/print-with-path.rs
deleted file mode 100644
index f929c14c218..00000000000
--- a/tests/ui/feature-gates/print-with-path.rs
+++ /dev/null
@@ -1,7 +0,0 @@
-// check-fail
-// revisions: cfg target-features target-cpus
-// [cfg]compile-flags: --print cfg=cfg.txt
-// [target-cpus]compile-flags: --print target-cpu=target_cpu.txt
-// [target-features]compile-flags: --print target-features=target_features.txt
-
-fn main() {}
diff --git a/tests/ui/feature-gates/print-with-path.target-cpus.stderr b/tests/ui/feature-gates/print-with-path.target-cpus.stderr
deleted file mode 100644
index a6c51baa320..00000000000
--- a/tests/ui/feature-gates/print-with-path.target-cpus.stderr
+++ /dev/null
@@ -1,2 +0,0 @@
-error: the `-Z unstable-options` flag must also be passed to enable the path print option
-
diff --git a/tests/ui/feature-gates/print-with-path.target-features.stderr b/tests/ui/feature-gates/print-with-path.target-features.stderr
deleted file mode 100644
index a6c51baa320..00000000000
--- a/tests/ui/feature-gates/print-with-path.target-features.stderr
+++ /dev/null
@@ -1,2 +0,0 @@
-error: the `-Z unstable-options` flag must also be passed to enable the path print option
-
diff --git a/tests/ui/fmt/raw-idents.rs b/tests/ui/fmt/raw-idents.rs
new file mode 100644
index 00000000000..29a74c55a4a
--- /dev/null
+++ b/tests/ui/fmt/raw-idents.rs
@@ -0,0 +1,17 @@
+// Regression test for https://github.com/rust-lang/rust/issues/115466
+
+// The "identifier" in format strings is parsed as an IDENTIFIER_OR_KEYWORD, not an IDENTIFIER.
+// Test that there is an actionable diagnostic if a RAW_IDENTIFIER is used instead.
+
+fn main() {
+    let r#type = "foobar";
+    println!("It is {r#type}"); //~ ERROR: invalid format string: raw identifiers are not supported
+    println!(r##"It still is {r#type}"##); //~ ERROR: invalid format string: raw identifiers are not supported
+    println!(concat!("{r#", "type}")); //~ ERROR: invalid format string: raw identifiers are not supported
+    println!("{\x72\x23type:?}"); //~ ERROR: invalid format string: raw identifiers are not supported
+
+    // OK
+    println!("{type}");
+    println!("{let}", let = r#type);
+    println!("{let}", r#let = r#type);
+}
diff --git a/tests/ui/fmt/raw-idents.stderr b/tests/ui/fmt/raw-idents.stderr
new file mode 100644
index 00000000000..2ddc114d286
--- /dev/null
+++ b/tests/ui/fmt/raw-idents.stderr
@@ -0,0 +1,44 @@
+error: invalid format string: raw identifiers are not supported
+  --> $DIR/raw-idents.rs:8:22
+   |
+LL |     println!("It is {r#type}");
+   |                      --^^^^
+   |                      |
+   |                      raw identifier used here in format string
+   |                      help: remove the `r#`
+   |
+   = note: identifiers in format strings can be keywords and don't need to be prefixed with `r#`
+
+error: invalid format string: raw identifiers are not supported
+  --> $DIR/raw-idents.rs:9:31
+   |
+LL |     println!(r##"It still is {r#type}"##);
+   |                               --^^^^
+   |                               |
+   |                               raw identifier used here in format string
+   |                               help: remove the `r#`
+   |
+   = note: identifiers in format strings can be keywords and don't need to be prefixed with `r#`
+
+error: invalid format string: raw identifiers are not supported
+  --> $DIR/raw-idents.rs:10:14
+   |
+LL |     println!(concat!("{r#", "type}"));
+   |              ^^^^^^^^^^^^^^^^^^^^^^^ raw identifier used here in format string
+   |
+   = note: identifiers in format strings can be keywords and don't need to be prefixed with `r#`
+   = note: this error originates in the macro `concat` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: invalid format string: raw identifiers are not supported
+  --> $DIR/raw-idents.rs:11:16
+   |
+LL |     println!("{\x72\x23type:?}");
+   |                --------^^^^
+   |                |
+   |                raw identifier used here in format string
+   |                help: remove the `r#`
+   |
+   = note: identifiers in format strings can be keywords and don't need to be prefixed with `r#`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/fn/fn-pointer-mismatch.stderr b/tests/ui/fn/fn-pointer-mismatch.stderr
index a674babcb32..87ece845b83 100644
--- a/tests/ui/fn/fn-pointer-mismatch.stderr
+++ b/tests/ui/fn/fn-pointer-mismatch.stderr
@@ -80,7 +80,6 @@ LL |     let e: &fn(u32) -> u32 = &foo;
    = note: expected reference `&fn(u32) -> u32`
               found reference `&fn(u32) -> u32 {foo}`
    = note: fn items are distinct from fn pointers
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 help: consider casting to a fn pointer
    |
 LL |     let e: &fn(u32) -> u32 = &(foo as fn(u32) -> u32);
diff --git a/tests/ui/fn/keyword-order.stderr b/tests/ui/fn/keyword-order.stderr
index d3b140c8528..97d8f91b1ee 100644
--- a/tests/ui/fn/keyword-order.stderr
+++ b/tests/ui/fn/keyword-order.stderr
@@ -11,6 +11,8 @@ error: expected item, found keyword `pub`
    |
 LL | default pub const async unsafe extern fn err() {}
    |         ^^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/fn/signature-error-reporting-under-verbose.rs b/tests/ui/fn/signature-error-reporting-under-verbose.rs
index 12ff113c913..d00cbd8a0f2 100644
--- a/tests/ui/fn/signature-error-reporting-under-verbose.rs
+++ b/tests/ui/fn/signature-error-reporting-under-verbose.rs
@@ -12,5 +12,4 @@ fn main() {
     //~| NOTE expected fn pointer, found fn item
     //~| NOTE expected fn pointer `fn(i32, u32)`
     //~| NOTE arguments to this function are incorrect
-    //~| NOTE when the arguments and return types match, functions can be coerced to function pointers
 }
diff --git a/tests/ui/fn/signature-error-reporting-under-verbose.stderr b/tests/ui/fn/signature-error-reporting-under-verbose.stderr
index f4498db7259..067ee824d5d 100644
--- a/tests/ui/fn/signature-error-reporting-under-verbose.stderr
+++ b/tests/ui/fn/signature-error-reporting-under-verbose.stderr
@@ -8,7 +8,6 @@ LL |     needs_ptr(foo);
    |
    = note: expected fn pointer `fn(i32, u32)`
                  found fn item `fn(i32, i32) {foo}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 note: function defined here
   --> $DIR/signature-error-reporting-under-verbose.rs:5:4
    |
diff --git a/tests/ui/generic-associated-types/issue-101020.stderr b/tests/ui/generic-associated-types/issue-101020.stderr
index 5c8db617c17..91967fb8509 100644
--- a/tests/ui/generic-associated-types/issue-101020.stderr
+++ b/tests/ui/generic-associated-types/issue-101020.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `for<'a> &'a mut (): Foo<&'a mut ()>` is not satis
 LL |     (&mut EmptyIter).consume(());
    |                      ^^^^^^^ the trait `for<'a> Foo<&'a mut ()>` is not implemented for `&'a mut ()`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-101020.rs:28:1
+   |
+LL | trait Foo<T> {}
+   | ^^^^^^^^^^^^
 note: required for `&'a mut ()` to implement `for<'a> FuncInput<'a, &'a mut ()>`
   --> $DIR/issue-101020.rs:27:20
    |
diff --git a/tests/ui/generics/issue-94432-garbage-ice.rs b/tests/ui/generics/issue-94432-garbage-ice.rs
index d0709e2d2a4..4ddb3a7e9f8 100644
--- a/tests/ui/generics/issue-94432-garbage-ice.rs
+++ b/tests/ui/generics/issue-94432-garbage-ice.rs
@@ -4,7 +4,7 @@
 
 fn�a<e>(){fn�p(){e}} //~ ERROR unknown start of token: \u{fffd}
 //~^ ERROR unknown start of token: \u{fffd}
-//~^^ ERROR can't use generic parameters from outer function [E0401]
+//~^^ ERROR can't use generic parameters from outer item [E0401]
 //~^^^ WARN type parameter `e` should have an upper camel case name
 
 fn main(){}
diff --git a/tests/ui/generics/issue-98432.rs b/tests/ui/generics/issue-98432.rs
index 780c50d6ffa..c31dea76c09 100644
--- a/tests/ui/generics/issue-98432.rs
+++ b/tests/ui/generics/issue-98432.rs
@@ -2,7 +2,7 @@ struct Struct<T>(T);
 
 impl<T> Struct<T> {
     const CONST: fn() = || {
-        struct _Obligation where T:; //~ ERROR can't use generic parameters from outer function
+        struct _Obligation where T:; //~ ERROR can't use generic parameters from outer item
     };
 }
 
diff --git a/tests/ui/generics/issue-98432.stderr b/tests/ui/generics/issue-98432.stderr
index c7b5c33618d..0736d94106e 100644
--- a/tests/ui/generics/issue-98432.stderr
+++ b/tests/ui/generics/issue-98432.stderr
@@ -1,13 +1,13 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-98432.rs:5:34
    |
 LL | impl<T> Struct<T> {
-   |      - type parameter from outer function
+   |      - type parameter from outer item
 LL |     const CONST: fn() = || {
 LL |         struct _Obligation where T:;
-   |                           -      ^ use of generic parameter from outer function
+   |                           -      ^ use of generic parameter from outer item
    |                           |
-   |                           help: try using a local generic parameter instead: `<T>`
+   |                           help: try introducing a local generic parameter here: `<T>`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-89118.stderr b/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-89118.stderr
index edef6ccd34e..7fe803550bd 100644
--- a/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-89118.stderr
+++ b/tests/ui/higher-ranked/trait-bounds/normalize-under-binder/issue-89118.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `for<'a> &'a (): BufferMut` is not satisfied
 LL |     C: StackContext,
    |        ^^^^^^^^^^^^ the trait `for<'a> BufferMut` is not implemented for `&'a ()`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-89118.rs:1:1
+   |
+LL | trait BufferMut {}
+   | ^^^^^^^^^^^^^^^
 note: required for `Ctx<()>` to implement `for<'a> BufferUdpStateContext<&'a ()>`
   --> $DIR/issue-89118.rs:5:23
    |
@@ -26,6 +31,11 @@ error[E0277]: the trait bound `for<'a> &'a (): BufferMut` is not satisfied
 LL | impl<C> EthernetWorker<C> {}
    |         ^^^^^^^^^^^^^^^^^ the trait `for<'a> BufferMut` is not implemented for `&'a ()`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-89118.rs:1:1
+   |
+LL | trait BufferMut {}
+   | ^^^^^^^^^^^^^^^
 note: required for `Ctx<()>` to implement `for<'a> BufferUdpStateContext<&'a ()>`
   --> $DIR/issue-89118.rs:5:23
    |
@@ -48,6 +58,11 @@ error[E0277]: the trait bound `for<'a> &'a (): BufferMut` is not satisfied
 LL |     type Handler = Ctx<C::Dispatcher>;
    |                    ^^^^^^^^^^^^^^^^^^ the trait `for<'a> BufferMut` is not implemented for `&'a ()`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-89118.rs:1:1
+   |
+LL | trait BufferMut {}
+   | ^^^^^^^^^^^^^^^
 note: required for `Ctx<()>` to implement `for<'a> BufferUdpStateContext<&'a ()>`
   --> $DIR/issue-89118.rs:5:23
    |
diff --git a/tests/ui/impl-trait/async_scope_creep.rs b/tests/ui/impl-trait/async_scope_creep.rs
index 7a9d64d339f..9a8831a299e 100644
--- a/tests/ui/impl-trait/async_scope_creep.rs
+++ b/tests/ui/impl-trait/async_scope_creep.rs
@@ -1,6 +1,7 @@
 #![feature(type_alias_impl_trait)]
 // edition:2021
-// check-pass
+//[rpit] check-pass
+// revisions: tait rpit
 
 struct Pending {}
 
@@ -12,15 +13,23 @@ impl AsyncRead for i32 {}
 
 type PendingReader<'a> = impl AsyncRead + 'a;
 
-type OpeningReadFuture<'a> =
-    impl std::future::Future<Output = Result<PendingReader<'a>, CantOpen>>;
+#[cfg(tait)]
+type OpeningReadFuture<'a> = impl std::future::Future<Output = Result<PendingReader<'a>, CantOpen>>;
 
 impl Pending {
     async fn read(&mut self) -> Result<impl AsyncRead + '_, CantOpen> {
         Ok(42)
     }
 
+    #[cfg(tait)]
     fn read_fut(&mut self) -> OpeningReadFuture<'_> {
+        self.read() //[tait]~ ERROR: cannot satisfy `impl AsyncRead + 'a == PendingReader<'a>`
+    }
+
+    #[cfg(rpit)]
+    fn read_fut(
+        &mut self,
+    ) -> impl std::future::Future<Output = Result<PendingReader<'_>, CantOpen>> {
         self.read()
     }
 }
diff --git a/tests/ui/impl-trait/async_scope_creep.tait.stderr b/tests/ui/impl-trait/async_scope_creep.tait.stderr
new file mode 100644
index 00000000000..165096a0574
--- /dev/null
+++ b/tests/ui/impl-trait/async_scope_creep.tait.stderr
@@ -0,0 +1,9 @@
+error[E0284]: type annotations needed: cannot satisfy `impl AsyncRead + 'a == PendingReader<'a>`
+  --> $DIR/async_scope_creep.rs:26:9
+   |
+LL |         self.read()
+   |         ^^^^^^^^^^^ cannot satisfy `impl AsyncRead + 'a == PendingReader<'a>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0284`.
diff --git a/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs b/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs
index cfc2193f633..6e99402113a 100644
--- a/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs
+++ b/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs
@@ -1,4 +1,4 @@
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 
 use std::ops::Deref;
 
@@ -8,6 +8,7 @@ pub trait Foo {
 
 pub struct Foreign;
 impl Foo for Foreign {
+    #[expect(refining_impl_trait)]
     fn bar(self) -> &'static () {
         &()
     }
diff --git a/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.rs b/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.rs
index ff7ad4bf389..fbbbb8585d1 100644
--- a/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.rs
+++ b/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.rs
@@ -2,7 +2,7 @@
 
 #![feature(return_position_impl_trait_in_trait)]
 
-trait Iterable {
+pub trait Iterable {
     type Item<'a>
     where
         Self: 'a;
@@ -17,6 +17,7 @@ impl<'a, I: 'a + Iterable> Iterable for &'a I {
     //~^ ERROR impl has stricter requirements than trait
 
     fn iter(&self) -> impl 'a + Iterator<Item = I::Item<'a>> {
+        //~^ WARN impl trait in impl method signature does not match trait method signature
         (*self).iter()
     }
 }
diff --git a/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.stderr b/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.stderr
index 106b8a7c804..a5fb338ea4e 100644
--- a/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.stderr
+++ b/tests/ui/impl-trait/in-trait/bad-item-bound-within-rpitit.stderr
@@ -12,6 +12,22 @@ help: copy the `where` clause predicates from the trait
 LL |     where Self: 'b;
    |     ~~~~~~~~~~~~~~
 
-error: aborting due to previous error
+warning: impl trait in impl method signature does not match trait method signature
+  --> $DIR/bad-item-bound-within-rpitit.rs:19:28
+   |
+LL |     fn iter(&self) -> impl '_ + Iterator<Item = Self::Item<'_>>;
+   |                       ----------------------------------------- return type from trait method defined here
+...
+LL |     fn iter(&self) -> impl 'a + Iterator<Item = I::Item<'a>> {
+   |                            ^^ this bound is stronger than that defined on the trait
+   |
+   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
+   = note: `#[warn(refining_impl_trait)]` on by default
+help: replace the return type so that it matches the trait
+   |
+LL |     fn iter(&self) -> impl Iterator<Item = <Self as Iterable>::Item<'_>> + '_ {
+   |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+error: aborting due to previous error; 1 warning emitted
 
 For more information about this error, try `rustc --explain E0276`.
diff --git a/tests/ui/impl-trait/in-trait/deep-match-works.rs b/tests/ui/impl-trait/in-trait/deep-match-works.rs
index 78cff97c616..fc290f11f9d 100644
--- a/tests/ui/impl-trait/in-trait/deep-match-works.rs
+++ b/tests/ui/impl-trait/in-trait/deep-match-works.rs
@@ -1,15 +1,16 @@
 // check-pass
 
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 #![allow(incomplete_features)]
 
-struct Wrapper<T>(T);
+pub struct Wrapper<T>(T);
 
-trait Foo {
+pub trait Foo {
     fn bar() -> Wrapper<impl Sized>;
 }
 
 impl Foo for () {
+    #[expect(refining_impl_trait)]
     fn bar() -> Wrapper<i32> {
         Wrapper(0)
     }
diff --git a/tests/ui/impl-trait/in-trait/foreign.rs b/tests/ui/impl-trait/in-trait/foreign.rs
index b0c93a02935..6285d7786d5 100644
--- a/tests/ui/impl-trait/in-trait/foreign.rs
+++ b/tests/ui/impl-trait/in-trait/foreign.rs
@@ -1,14 +1,25 @@
 // check-pass
 // aux-build: rpitit.rs
 
+#![feature(lint_reasons)]
+
 extern crate rpitit;
 
 use rpitit::{Foo, Foreign};
 use std::sync::Arc;
 
 // Implement an RPITIT from another crate.
-struct Local;
+pub struct Local;
 impl Foo for Local {
+    #[expect(refining_impl_trait)]
+    fn bar(self) -> Arc<String> {
+        Arc::new(String::new())
+    }
+}
+
+struct LocalIgnoreRefining;
+impl Foo for LocalIgnoreRefining {
+    #[deny(refining_impl_trait)]
     fn bar(self) -> Arc<String> {
         Arc::new(String::new())
     }
@@ -23,4 +34,5 @@ fn main() {
     let &() = Foreign.bar();
 
     let x: Arc<String> = Local.bar();
+    let x: Arc<String> = LocalIgnoreRefining.bar();
 }
diff --git a/tests/ui/impl-trait/in-trait/issue-102140.stderr b/tests/ui/impl-trait/in-trait/issue-102140.stderr
index 5d55b9fa4f9..18bb63745d7 100644
--- a/tests/ui/impl-trait/in-trait/issue-102140.stderr
+++ b/tests/ui/impl-trait/in-trait/issue-102140.stderr
@@ -6,7 +6,11 @@ LL |         MyTrait::foo(&self)
    |         |
    |         required by a bound introduced by this call
    |
-   = help: the trait `MyTrait` is implemented for `Outer`
+help: consider removing the leading `&`-reference
+   |
+LL -         MyTrait::foo(&self)
+LL +         MyTrait::foo(self)
+   |
 
 error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied
   --> $DIR/issue-102140.rs:23:9
diff --git a/tests/ui/impl-trait/in-trait/issue-102571.rs b/tests/ui/impl-trait/in-trait/issue-102571.rs
index 61c91e64417..ccb53031c44 100644
--- a/tests/ui/impl-trait/in-trait/issue-102571.rs
+++ b/tests/ui/impl-trait/in-trait/issue-102571.rs
@@ -8,14 +8,6 @@ trait Foo {
     fn bar(self) -> impl Deref<Target = impl Display + ?Sized>;
 }
 
-struct A;
-
-impl Foo for A {
-    fn bar(self) -> &'static str {
-        "Hello, world"
-    }
-}
-
 fn foo<T: Foo>(t: T) {
     let () = t.bar();
     //~^ ERROR mismatched types
diff --git a/tests/ui/impl-trait/in-trait/issue-102571.stderr b/tests/ui/impl-trait/in-trait/issue-102571.stderr
index 87219941d91..594b9ae9cd6 100644
--- a/tests/ui/impl-trait/in-trait/issue-102571.stderr
+++ b/tests/ui/impl-trait/in-trait/issue-102571.stderr
@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/issue-102571.rs:20:9
+  --> $DIR/issue-102571.rs:12:9
    |
 LL |     let () = t.bar();
    |         ^^   ------- this expression has type `impl Deref<Target = impl std::fmt::Display + ?Sized>`
diff --git a/tests/ui/impl-trait/in-trait/lifetime-in-associated-trait-bound.rs b/tests/ui/impl-trait/in-trait/lifetime-in-associated-trait-bound.rs
new file mode 100644
index 00000000000..49d36d6c99c
--- /dev/null
+++ b/tests/ui/impl-trait/in-trait/lifetime-in-associated-trait-bound.rs
@@ -0,0 +1,19 @@
+// check-pass
+
+#![feature(associated_type_bounds, return_position_impl_trait_in_trait)]
+
+trait Trait {
+    type Type;
+
+    fn method(&self) -> impl Trait<Type: '_>;
+}
+
+impl Trait for () {
+    type Type = ();
+
+    fn method(&self) -> impl Trait<Type: '_> {
+        ()
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/impl-trait/in-trait/nested-rpitit.rs b/tests/ui/impl-trait/in-trait/nested-rpitit.rs
index 65285e3a3cc..58ba1acaf14 100644
--- a/tests/ui/impl-trait/in-trait/nested-rpitit.rs
+++ b/tests/ui/impl-trait/in-trait/nested-rpitit.rs
@@ -1,26 +1,28 @@
 // check-pass
 
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 #![allow(incomplete_features)]
 
 use std::fmt::Display;
 use std::ops::Deref;
 
-trait Foo {
+pub trait Foo {
     fn bar(self) -> impl Deref<Target = impl Display + ?Sized>;
 }
 
-struct A;
+pub struct A;
 
 impl Foo for A {
+    #[expect(refining_impl_trait)]
     fn bar(self) -> &'static str {
         "Hello, world"
     }
 }
 
-struct B;
+pub struct B;
 
 impl Foo for B {
+    #[expect(refining_impl_trait)]
     fn bar(self) -> Box<i32> {
         Box::new(42)
     }
diff --git a/tests/ui/impl-trait/in-trait/object-safety-sized.rs b/tests/ui/impl-trait/in-trait/object-safety-sized.rs
new file mode 100644
index 00000000000..f221cfbb176
--- /dev/null
+++ b/tests/ui/impl-trait/in-trait/object-safety-sized.rs
@@ -0,0 +1,23 @@
+// check-pass
+// revisions: current next
+//[next] compile-flags: -Ztrait-solver=next
+
+#![feature(return_position_impl_trait_in_trait)]
+
+fn main() {
+    let vec: Vec<Box<dyn Trait>> = Vec::new();
+
+    for i in vec {
+        i.fn_2();
+    }
+}
+
+trait OtherTrait {}
+
+trait Trait {
+    fn fn_1(&self) -> impl OtherTrait
+    where
+        Self: Sized;
+
+    fn fn_2(&self) -> bool;
+}
diff --git a/tests/ui/impl-trait/in-trait/object-safety.rs b/tests/ui/impl-trait/in-trait/object-safety.rs
index 9a231e59b09..d1c9fba4e99 100644
--- a/tests/ui/impl-trait/in-trait/object-safety.rs
+++ b/tests/ui/impl-trait/in-trait/object-safety.rs
@@ -8,7 +8,7 @@ trait Foo {
 }
 
 impl Foo for u32 {
-    fn baz(&self) -> u32 {
+    fn baz(&self) -> impl Debug {
         32
     }
 }
diff --git a/tests/ui/impl-trait/in-trait/refine.rs b/tests/ui/impl-trait/in-trait/refine.rs
new file mode 100644
index 00000000000..a91f9b3e722
--- /dev/null
+++ b/tests/ui/impl-trait/in-trait/refine.rs
@@ -0,0 +1,48 @@
+#![feature(return_position_impl_trait_in_trait, async_fn_in_trait)]
+#![deny(refining_impl_trait)]
+
+pub trait Foo {
+    fn bar() -> impl Sized;
+}
+
+pub struct A;
+impl Foo for A {
+    fn bar() -> impl Copy {}
+    //~^ ERROR impl method signature does not match trait method signature
+}
+
+pub struct B;
+impl Foo for B {
+    fn bar() {}
+    //~^ ERROR impl method signature does not match trait method signature
+}
+
+pub struct C;
+impl Foo for C {
+    fn bar() -> () {}
+    //~^ ERROR impl method signature does not match trait method signature
+}
+
+struct Private;
+impl Foo for Private {
+    fn bar() -> () {}
+}
+
+pub trait Arg<A> {
+    fn bar() -> impl Sized;
+}
+impl Arg<Private> for A {
+    fn bar() -> () {}
+}
+
+pub trait Late {
+    fn bar<'a>(&'a self) -> impl Sized + 'a;
+}
+
+pub struct D;
+impl Late for D {
+    fn bar(&self) -> impl Copy + '_ {}
+    //~^ ERROR impl method signature does not match trait method signature
+}
+
+fn main() {}
diff --git a/tests/ui/impl-trait/in-trait/refine.stderr b/tests/ui/impl-trait/in-trait/refine.stderr
new file mode 100644
index 00000000000..29aa08e25bb
--- /dev/null
+++ b/tests/ui/impl-trait/in-trait/refine.stderr
@@ -0,0 +1,67 @@
+error: impl trait in impl method signature does not match trait method signature
+  --> $DIR/refine.rs:10:22
+   |
+LL |     fn bar() -> impl Sized;
+   |                 ---------- return type from trait method defined here
+...
+LL |     fn bar() -> impl Copy {}
+   |                      ^^^^ this bound is stronger than that defined on the trait
+   |
+   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
+note: the lint level is defined here
+  --> $DIR/refine.rs:2:9
+   |
+LL | #![deny(refining_impl_trait)]
+   |         ^^^^^^^^^^^^^^^^^^^
+help: replace the return type so that it matches the trait
+   |
+LL |     fn bar() -> impl Sized {}
+   |                 ~~~~~~~~~~
+
+error: impl trait in impl method signature does not match trait method signature
+  --> $DIR/refine.rs:16:5
+   |
+LL |     fn bar() -> impl Sized;
+   |                 ---------- return type from trait method defined here
+...
+LL |     fn bar() {}
+   |     ^^^^^^^^
+   |
+   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
+help: replace the return type so that it matches the trait
+   |
+LL |     fn bar() -> impl Sized {}
+   |              +++++++++++++
+
+error: impl trait in impl method signature does not match trait method signature
+  --> $DIR/refine.rs:22:17
+   |
+LL |     fn bar() -> impl Sized;
+   |                 ---------- return type from trait method defined here
+...
+LL |     fn bar() -> () {}
+   |                 ^^
+   |
+   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
+help: replace the return type so that it matches the trait
+   |
+LL |     fn bar() -> impl Sized {}
+   |                 ~~~~~~~~~~
+
+error: impl trait in impl method signature does not match trait method signature
+  --> $DIR/refine.rs:44:27
+   |
+LL |     fn bar<'a>(&'a self) -> impl Sized + 'a;
+   |                             --------------- return type from trait method defined here
+...
+LL |     fn bar(&self) -> impl Copy + '_ {}
+   |                           ^^^^ this bound is stronger than that defined on the trait
+   |
+   = note: add `#[allow(refining_impl_trait)]` if it is intended for this to be part of the public API of this crate
+help: replace the return type so that it matches the trait
+   |
+LL |     fn bar(&self) -> impl Sized + '_ {}
+   |                      ~~~~~~~~~~~~~~~
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/impl-trait/in-trait/reveal.rs b/tests/ui/impl-trait/in-trait/reveal.rs
index d6ede1cc495..b1b46d75b8f 100644
--- a/tests/ui/impl-trait/in-trait/reveal.rs
+++ b/tests/ui/impl-trait/in-trait/reveal.rs
@@ -1,13 +1,14 @@
 // check-pass
 
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 #![allow(incomplete_features)]
 
-trait Foo {
+pub trait Foo {
     fn f() -> Box<impl Sized>;
 }
 
 impl Foo for () {
+    #[expect(refining_impl_trait)]
     fn f() -> Box<String> {
         Box::new(String::new())
     }
diff --git a/tests/ui/impl-trait/in-trait/rpitit-shadowed-by-missing-adt.rs b/tests/ui/impl-trait/in-trait/rpitit-shadowed-by-missing-adt.rs
index 7682884f879..44a2b430344 100644
--- a/tests/ui/impl-trait/in-trait/rpitit-shadowed-by-missing-adt.rs
+++ b/tests/ui/impl-trait/in-trait/rpitit-shadowed-by-missing-adt.rs
@@ -1,6 +1,6 @@
 // issue: 113903
 
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 
 use std::ops::Deref;
 
@@ -10,6 +10,7 @@ pub trait Tr {
 }
 
 impl Tr for () {
+    #[expect(refining_impl_trait)]
     fn w() -> &'static () {
         &()
     }
diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.failure.stderr b/tests/ui/impl-trait/in-trait/signature-mismatch.failure.stderr
index 186580f5756..468cf12f1bc 100644
--- a/tests/ui/impl-trait/in-trait/signature-mismatch.failure.stderr
+++ b/tests/ui/impl-trait/in-trait/signature-mismatch.failure.stderr
@@ -1,5 +1,5 @@
 error[E0623]: lifetime mismatch
-  --> $DIR/signature-mismatch.rs:77:10
+  --> $DIR/signature-mismatch.rs:79:10
    |
 LL |         &'a self,
    |         -------- this parameter and the return type are declared with different lifetimes...
diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.rs b/tests/ui/impl-trait/in-trait/signature-mismatch.rs
index c84a3b8f46b..685c0f06e88 100644
--- a/tests/ui/impl-trait/in-trait/signature-mismatch.rs
+++ b/tests/ui/impl-trait/in-trait/signature-mismatch.rs
@@ -2,18 +2,17 @@
 // revisions: success failure
 //[success] check-pass
 
-#![feature(return_position_impl_trait_in_trait)]
-#![allow(incomplete_features)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 
 use std::future::Future;
 
-trait Captures<'a> {}
+pub trait Captures<'a> {}
 impl<T> Captures<'_> for T {}
 
-trait Captures2<'a, 'b> {}
+pub trait Captures2<'a, 'b> {}
 impl<T> Captures2<'_, '_> for T {}
 
-trait AsyncTrait {
+pub trait AsyncTrait {
     #[cfg(success)]
     fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>;
 
@@ -45,6 +44,7 @@ impl AsyncTrait for Struct {
     // Does not capture more lifetimes that trait def'n, since trait def'n
     // implicitly captures all in-scope lifetimes.
     #[cfg(success)]
+    #[expect(refining_impl_trait)]
     fn async_fn<'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a {
         async move { buff.to_vec() }
     }
@@ -52,6 +52,7 @@ impl AsyncTrait for Struct {
     // Does not capture more lifetimes that trait def'n, since trait def'n
     // implicitly captures all in-scope lifetimes.
     #[cfg(success)]
+    #[expect(refining_impl_trait)]
     fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a {
         async move { buff.to_vec() }
     }
@@ -59,6 +60,7 @@ impl AsyncTrait for Struct {
     // Does not capture more lifetimes that trait def'n, since trait def'n
     // implicitly captures all in-scope lifetimes.
     #[cfg(success)]
+    #[expect(refining_impl_trait)]
     fn async_fn_multiple<'a, 'b>(
         &'a self,
         buff: &'b [u8],
diff --git a/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs b/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs
index c9ee877db8e..41fc285883a 100644
--- a/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs
+++ b/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs
@@ -1,10 +1,10 @@
 // check-pass
 
 #![feature(specialization)]
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 #![allow(incomplete_features)]
 
-trait Foo {
+pub trait Foo {
     fn bar(&self) -> impl Sized;
 }
 
@@ -12,6 +12,7 @@ impl<U> Foo for U
 where
     U: Copy,
 {
+    #[expect(refining_impl_trait)]
     fn bar(&self) -> U {
         *self
     }
diff --git a/tests/ui/impl-trait/in-trait/success.rs b/tests/ui/impl-trait/in-trait/success.rs
index 4cbe682b46f..7d415ea17a4 100644
--- a/tests/ui/impl-trait/in-trait/success.rs
+++ b/tests/ui/impl-trait/in-trait/success.rs
@@ -1,29 +1,32 @@
 // check-pass
 
-#![feature(return_position_impl_trait_in_trait)]
+#![feature(return_position_impl_trait_in_trait, lint_reasons)]
 #![allow(incomplete_features)]
 
 use std::fmt::Display;
 
-trait Foo {
+pub trait Foo {
     fn bar(&self) -> impl Display;
 }
 
 impl Foo for i32 {
+    #[expect(refining_impl_trait)]
     fn bar(&self) -> i32 {
         *self
     }
 }
 
 impl Foo for &'static str {
+    #[expect(refining_impl_trait)]
     fn bar(&self) -> &'static str {
         *self
     }
 }
 
-struct Yay;
+pub struct Yay;
 
 impl Foo for Yay {
+    #[expect(refining_impl_trait)]
     fn bar(&self) -> String {
         String::from(":^)")
     }
diff --git a/tests/ui/impl-trait/issue-108591.rs b/tests/ui/impl-trait/issue-108591.rs
index 6b9d14941f2..91ea2e9fb85 100644
--- a/tests/ui/impl-trait/issue-108591.rs
+++ b/tests/ui/impl-trait/issue-108591.rs
@@ -13,7 +13,8 @@ impl MyTy<'_> {
     }
 }
 
-type Opaque<'a> = impl Sized;
+type Opaque2 = impl Sized;
+type Opaque<'a> = Opaque2;
 fn define<'a>() -> Opaque<'a> {}
 
 fn test<'a>() {
diff --git a/tests/ui/impl-trait/issue-108592.rs b/tests/ui/impl-trait/issue-108592.rs
index 58a0ed9bf1a..953fffc4898 100644
--- a/tests/ui/impl-trait/issue-108592.rs
+++ b/tests/ui/impl-trait/issue-108592.rs
@@ -11,7 +11,8 @@ fn test_closure() {
     closure(&opaque());
 }
 
-type Opaque<'a> = impl Sized;
+type Opaque2 = impl Sized;
+type Opaque<'a> = Opaque2;
 fn define<'a>() -> Opaque<'a> {}
 
 fn test_tait(_: &Opaque<'_>) {
diff --git a/tests/ui/impl-trait/issue-86465.rs b/tests/ui/impl-trait/issue-86465.rs
index 8c7b41d73b7..a79bb6474d8 100644
--- a/tests/ui/impl-trait/issue-86465.rs
+++ b/tests/ui/impl-trait/issue-86465.rs
@@ -1,10 +1,6 @@
 #![feature(type_alias_impl_trait)]
 
-pub trait Captures<'a> {}
-
-impl<'a, T: ?Sized> Captures<'a> for T {}
-
-type X<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
+type X<'a, 'b> = impl std::fmt::Debug;
 
 fn f<'t, 'u>(a: &'t u32, b: &'u u32) -> (X<'t, 'u>, X<'u, 't>) {
     (a, a)
diff --git a/tests/ui/impl-trait/issue-86465.stderr b/tests/ui/impl-trait/issue-86465.stderr
index b949b2b4245..90d6904ed61 100644
--- a/tests/ui/impl-trait/issue-86465.stderr
+++ b/tests/ui/impl-trait/issue-86465.stderr
@@ -1,5 +1,5 @@
 error: concrete type differs from previous defining opaque type use
-  --> $DIR/issue-86465.rs:10:5
+  --> $DIR/issue-86465.rs:6:5
    |
 LL |     (a, a)
    |     ^^^^^^
diff --git a/tests/ui/impl-trait/lifetime-ambiguity-regression.rs b/tests/ui/impl-trait/lifetime-ambiguity-regression.rs
new file mode 100644
index 00000000000..ce6ae3786e1
--- /dev/null
+++ b/tests/ui/impl-trait/lifetime-ambiguity-regression.rs
@@ -0,0 +1,13 @@
+//! This test shows a situation where through subtle compiler changes we can
+//! suddenly infer a different lifetime in the hidden type, and thus not meet
+//! the opaque type bounds anymore. In this case `'a` and `'b` are equal, so
+//! picking either is fine, but then we'll fail an identity check of the hidden
+//! type and the expected hidden type.
+
+// check-pass
+
+fn test<'a: 'b, 'b: 'a>() -> impl IntoIterator<Item = (&'a u8, impl Into<(&'b u8, &'a u8)>)> {
+    None::<(_, (_, _))>
+}
+
+fn main() {}
diff --git a/tests/ui/implied-bounds/implied-bounds-unconstrained-1.rs b/tests/ui/implied-bounds/implied-bounds-unconstrained-1.rs
new file mode 100644
index 00000000000..025e5176ff7
--- /dev/null
+++ b/tests/ui/implied-bounds/implied-bounds-unconstrained-1.rs
@@ -0,0 +1,28 @@
+// check-pass
+
+// Regression test for #112832.
+pub trait QueryDb {
+    type Db;
+}
+
+pub struct QueryTable<Q, DB> {
+    db: DB,
+    storage: Q,
+}
+
+// We normalize `<Q as QueryDb>::Db` to `<Q as AsyncQueryFunction<'d>>::SendDb`
+// using the where-bound. 'd is an unconstrained region variable which previously
+// triggered an assert.
+impl<Q> QueryTable<Q, <Q as QueryDb>::Db> where Q: for<'d> AsyncQueryFunction<'d> {}
+
+pub trait AsyncQueryFunction<'d>: QueryDb<Db = <Self as AsyncQueryFunction<'d>>::SendDb> {
+    type SendDb: 'd;
+}
+
+pub trait QueryStorageOpsAsync<Q>
+where
+    Q: for<'d> AsyncQueryFunction<'d>,
+{
+}
+
+fn main() {}
diff --git a/tests/ui/implied-bounds/implied-bounds-unconstrained-2.rs b/tests/ui/implied-bounds/implied-bounds-unconstrained-2.rs
new file mode 100644
index 00000000000..976054facee
--- /dev/null
+++ b/tests/ui/implied-bounds/implied-bounds-unconstrained-2.rs
@@ -0,0 +1,20 @@
+// check-pass
+
+// Another minimized regression test for #112832.
+trait Trait {
+    type Assoc;
+}
+
+trait Sub<'a>: Trait<Assoc = <Self as Sub<'a>>::SubAssoc> {
+    type SubAssoc;
+}
+
+// By using the where-clause we normalize `<T as Trait>::Assoc` to
+// `<T as Sub<'a>>::SubAssoc` where `'a` is an unconstrained region
+// variable.
+fn foo<T>(x: <T as Trait>::Assoc)
+where
+    for<'a> T: Sub<'a>,
+{}
+
+fn main() {}
diff --git a/tests/ui/imports/ambiguous-4.rs b/tests/ui/imports/ambiguous-4.rs
index 10f883339c3..24ae33784c5 100644
--- a/tests/ui/imports/ambiguous-4.rs
+++ b/tests/ui/imports/ambiguous-4.rs
@@ -1,4 +1,4 @@
-// check-pass
+// build-pass
 // aux-build: ../ambiguous-4-extern.rs
 
 extern crate ambiguous_4_extern;
diff --git a/tests/ui/imports/import-after-macro-expand-10.rs b/tests/ui/imports/import-after-macro-expand-10.rs
new file mode 100644
index 00000000000..b3520c42dfc
--- /dev/null
+++ b/tests/ui/imports/import-after-macro-expand-10.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+mod b {
+    pub mod http {
+        pub struct HeaderMap;
+    }
+
+    pub use self::http::*;
+    #[derive(Debug)]
+    pub struct HeaderMap;
+}
+
+use crate::b::*;
+
+fn main() {
+    let h: crate::b::HeaderMap = HeaderMap;
+}
diff --git a/tests/ui/imports/import-after-macro-expand-11.rs b/tests/ui/imports/import-after-macro-expand-11.rs
new file mode 100644
index 00000000000..2b81dfc236a
--- /dev/null
+++ b/tests/ui/imports/import-after-macro-expand-11.rs
@@ -0,0 +1,21 @@
+// check-pass
+
+#[derive(Debug)]
+struct H;
+
+mod p {
+    use super::*;
+
+    #[derive(Clone)]
+    struct H;
+
+    mod t {
+        use super::*;
+
+        fn f() {
+           let h: crate::p::H = H;
+        }
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/imports/import-after-macro-expand-12.rs b/tests/ui/imports/import-after-macro-expand-12.rs
new file mode 100644
index 00000000000..f92e8c12fca
--- /dev/null
+++ b/tests/ui/imports/import-after-macro-expand-12.rs
@@ -0,0 +1,34 @@
+// check-pass
+// https://github.com/rust-lang/rust/issues/115377
+
+use module::*;
+
+mod module {
+    pub enum B {}
+    impl B {
+        pub const ASSOC: u8 = 0;
+    }
+}
+
+#[derive()]
+pub enum B {}
+impl B {
+    pub const ASSOC: u16 = 0;
+}
+
+macro_rules! m {
+    ($right:expr) => {
+        $right
+    };
+}
+
+fn main() {
+    let a: u16 = {
+        use self::*;
+        B::ASSOC
+    };
+    let b: u16 = m!({
+        use self::*;
+        B::ASSOC
+    });
+}
diff --git a/tests/ui/imports/import-after-macro-expand-13.rs b/tests/ui/imports/import-after-macro-expand-13.rs
new file mode 100644
index 00000000000..fd640002c3e
--- /dev/null
+++ b/tests/ui/imports/import-after-macro-expand-13.rs
@@ -0,0 +1,22 @@
+// check-pass
+// similar as `import-after-macro-expand-6.rs`
+
+use crate::a::HeaderMap;
+
+mod b {
+    pub mod http {
+        pub struct HeaderMap;
+    }
+
+    pub use self::http::*;
+    #[derive(Debug)]
+    pub struct HeaderMap;
+}
+
+mod a {
+    pub use crate::b::*;
+}
+
+fn main() {
+    let h: crate::b::HeaderMap = HeaderMap;
+}
diff --git a/tests/ui/imports/import-after-macro-expand-14.rs b/tests/ui/imports/import-after-macro-expand-14.rs
new file mode 100644
index 00000000000..4d461a0e20c
--- /dev/null
+++ b/tests/ui/imports/import-after-macro-expand-14.rs
@@ -0,0 +1,22 @@
+// check-pass
+
+use crate::a::HeaderMap;
+
+mod b {
+    pub mod http {
+        #[derive(Clone)]
+        pub struct HeaderMap;
+    }
+
+    pub use self::http::*;
+    #[derive(Debug)]
+    pub struct HeaderMap;
+}
+
+mod a {
+    pub use crate::b::*;
+}
+
+fn main() {
+    let h: crate::b::HeaderMap = HeaderMap;
+}
diff --git a/tests/ui/imports/import-after-macro-expand-2.rs b/tests/ui/imports/import-after-macro-expand-2.rs
index b3996d48840..ff773fc8272 100644
--- a/tests/ui/imports/import-after-macro-expand-2.rs
+++ b/tests/ui/imports/import-after-macro-expand-2.rs
@@ -12,9 +12,7 @@ mod tests {
     use super::*;
 
     fn test_thing() {
-        let thing: crate::thing::Thing = Thing::Bar;
-        // FIXME: `thing` should refer to `crate::Thing`,
-        // FIXME: but doesn't currently refer to it due to backward compatibility
+        let thing: crate::Thing = Thing::Foo;
     }
 }
 
diff --git a/tests/ui/imports/import-after-macro-expand-4.rs b/tests/ui/imports/import-after-macro-expand-4.rs
index 02cc3f01af9..fc0a232a93c 100644
--- a/tests/ui/imports/import-after-macro-expand-4.rs
+++ b/tests/ui/imports/import-after-macro-expand-4.rs
@@ -1,3 +1,4 @@
+// check-pass
 // https://github.com/rust-lang/rust/pull/113242#issuecomment-1616034904
 // similar with `import-after-macro-expand-2.rs`
 
@@ -10,16 +11,6 @@ pub use a::*;
 mod c {
     use crate::*;
     pub struct S(Vec<P>);
-    //~^ ERROR the size for values of type
-    //~| WARNING trait objects without an explicit
-    //~| WARNING this is accepted in the current edition
-    //~| WARNING trait objects without an explicit
-    //~| WARNING this is accepted in the current edition
-    //~| WARNING trait objects without an explicit
-    //~| WARNING this is accepted in the current edition
-
-    // FIXME: should works, but doesn't currently refer
-    // to it due to backward compatibility
 }
 
 #[derive(Clone)]
diff --git a/tests/ui/imports/import-after-macro-expand-4.stderr b/tests/ui/imports/import-after-macro-expand-4.stderr
deleted file mode 100644
index 01f70cfc5bf..00000000000
--- a/tests/ui/imports/import-after-macro-expand-4.stderr
+++ /dev/null
@@ -1,53 +0,0 @@
-warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/import-after-macro-expand-4.rs:12:22
-   |
-LL |     pub struct S(Vec<P>);
-   |                      ^
-   |
-   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
-   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
-   = note: `#[warn(bare_trait_objects)]` on by default
-help: use `dyn`
-   |
-LL |     pub struct S(Vec<dyn P>);
-   |                      +++
-
-warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/import-after-macro-expand-4.rs:12:22
-   |
-LL |     pub struct S(Vec<P>);
-   |                      ^
-   |
-   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
-   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
-help: use `dyn`
-   |
-LL |     pub struct S(Vec<dyn P>);
-   |                      +++
-
-warning: trait objects without an explicit `dyn` are deprecated
-  --> $DIR/import-after-macro-expand-4.rs:12:22
-   |
-LL |     pub struct S(Vec<P>);
-   |                      ^
-   |
-   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
-   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
-help: use `dyn`
-   |
-LL |     pub struct S(Vec<dyn P>);
-   |                      +++
-
-error[E0277]: the size for values of type `(dyn a::P + 'static)` cannot be known at compilation time
-  --> $DIR/import-after-macro-expand-4.rs:12:18
-   |
-LL |     pub struct S(Vec<P>);
-   |                  ^^^^^^ doesn't have a size known at compile-time
-   |
-   = help: the trait `Sized` is not implemented for `(dyn a::P + 'static)`
-note: required by a bound in `Vec`
-  --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL
-
-error: aborting due to previous error; 3 warnings emitted
-
-For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/imports/import-after-macro-expand-6.rs b/tests/ui/imports/import-after-macro-expand-6.rs
index ab5bb37a175..bff8efebca6 100644
--- a/tests/ui/imports/import-after-macro-expand-6.rs
+++ b/tests/ui/imports/import-after-macro-expand-6.rs
@@ -18,7 +18,5 @@ mod b {
 use crate::a::HeaderMap;
 
 fn main() {
-    let h: crate::b::http::HeaderMap = HeaderMap;
-    // FIXME: should refer to `crate::b::HeaderMap`,
-    // FIXME: but doesn't currently refer to it due to backward compatibility
+    let h: crate::b::HeaderMap = HeaderMap;
 }
diff --git a/tests/ui/imports/import-after-macro-expand-9.rs b/tests/ui/imports/import-after-macro-expand-9.rs
new file mode 100644
index 00000000000..deee42c3b84
--- /dev/null
+++ b/tests/ui/imports/import-after-macro-expand-9.rs
@@ -0,0 +1,17 @@
+// check-pass
+
+use crate::b::*;
+
+mod b {
+    pub mod http {
+        pub struct HeaderMap;
+    }
+
+    pub use self::http::*;
+    #[derive(Debug)]
+    pub struct HeaderMap;
+}
+
+fn main() {
+    let h: crate::b::HeaderMap = HeaderMap;
+}
diff --git a/tests/ui/infinite/infinite-type-alias-mutual-recursion.feature.stderr b/tests/ui/infinite/infinite-type-alias-mutual-recursion.feature.stderr
new file mode 100644
index 00000000000..8b8fc46dfc5
--- /dev/null
+++ b/tests/ui/infinite/infinite-type-alias-mutual-recursion.feature.stderr
@@ -0,0 +1,27 @@
+error[E0275]: overflow evaluating the requirement `X2`
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:6:11
+   |
+LL | type X1 = X2;
+   |           ^^
+   |
+   = note: in case this is a recursive type alias, consider using a struct, enum, or union instead
+
+error[E0275]: overflow evaluating the requirement `X3`
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:9:11
+   |
+LL | type X2 = X3;
+   |           ^^
+   |
+   = note: in case this is a recursive type alias, consider using a struct, enum, or union instead
+
+error[E0275]: overflow evaluating the requirement `X1`
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:11:11
+   |
+LL | type X3 = X1;
+   |           ^^
+   |
+   = note: in case this is a recursive type alias, consider using a struct, enum, or union instead
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0275`.
diff --git a/tests/ui/infinite/infinite-type-alias-mutual-recursion.stderr b/tests/ui/infinite/infinite-type-alias-mutual-recursion.gated.stderr
index bbdb1f70b80..ec63688fa8b 100644
--- a/tests/ui/infinite/infinite-type-alias-mutual-recursion.stderr
+++ b/tests/ui/infinite/infinite-type-alias-mutual-recursion.gated.stderr
@@ -1,16 +1,16 @@
 error[E0391]: cycle detected when expanding type alias `X1`
-  --> $DIR/infinite-type-alias-mutual-recursion.rs:1:11
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:6:11
    |
 LL | type X1 = X2;
    |           ^^
    |
 note: ...which requires expanding type alias `X2`...
-  --> $DIR/infinite-type-alias-mutual-recursion.rs:3:11
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:9:11
    |
 LL | type X2 = X3;
    |           ^^
 note: ...which requires expanding type alias `X3`...
-  --> $DIR/infinite-type-alias-mutual-recursion.rs:4:11
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:11:11
    |
 LL | type X3 = X1;
    |           ^^
@@ -19,12 +19,13 @@ LL | type X3 = X1;
    = help: consider using a struct, enum, or union instead to break the cycle
    = help: see <https://doc.rust-lang.org/reference/types.html#recursive-types> for more information
 note: cycle used when collecting item types in top-level module
-  --> $DIR/infinite-type-alias-mutual-recursion.rs:1:1
+  --> $DIR/infinite-type-alias-mutual-recursion.rs:3:1
    |
-LL | / type X1 = X2;
+LL | / #![cfg_attr(feature, feature(lazy_type_alias))]
+LL | | #![allow(incomplete_features)]
 LL | |
-LL | | type X2 = X3;
-LL | | type X3 = X1;
+LL | | type X1 = X2;
+...  |
 LL | |
 LL | | fn main() {}
    | |____________^
diff --git a/tests/ui/infinite/infinite-type-alias-mutual-recursion.rs b/tests/ui/infinite/infinite-type-alias-mutual-recursion.rs
index 5381eedcfac..90c941c634e 100644
--- a/tests/ui/infinite/infinite-type-alias-mutual-recursion.rs
+++ b/tests/ui/infinite/infinite-type-alias-mutual-recursion.rs
@@ -1,6 +1,14 @@
+// revisions: feature gated
+
+#![cfg_attr(feature, feature(lazy_type_alias))]
+#![allow(incomplete_features)]
+
 type X1 = X2;
-//~^ ERROR cycle detected when expanding type alias `X1`
+//[gated]~^ ERROR cycle detected when expanding type alias `X1`
+//[feature]~^^ ERROR: overflow evaluating the requirement `X2`
 type X2 = X3;
+//[feature]~^ ERROR: overflow evaluating the requirement `X3`
 type X3 = X1;
+//[feature]~^ ERROR: overflow evaluating the requirement `X1`
 
 fn main() {}
diff --git a/tests/ui/infinite/infinite-vec-type-recursion.feature.stderr b/tests/ui/infinite/infinite-vec-type-recursion.feature.stderr
new file mode 100644
index 00000000000..3a146215905
--- /dev/null
+++ b/tests/ui/infinite/infinite-vec-type-recursion.feature.stderr
@@ -0,0 +1,11 @@
+error[E0275]: overflow evaluating the requirement `X`
+  --> $DIR/infinite-vec-type-recursion.rs:6:10
+   |
+LL | type X = Vec<X>;
+   |          ^^^^^^
+   |
+   = note: in case this is a recursive type alias, consider using a struct, enum, or union instead
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0275`.
diff --git a/tests/ui/infinite/infinite-vec-type-recursion.stderr b/tests/ui/infinite/infinite-vec-type-recursion.gated.stderr
index a21b033a9a9..e47d9b652fb 100644
--- a/tests/ui/infinite/infinite-vec-type-recursion.stderr
+++ b/tests/ui/infinite/infinite-vec-type-recursion.gated.stderr
@@ -1,5 +1,5 @@
 error[E0391]: cycle detected when expanding type alias `X`
-  --> $DIR/infinite-vec-type-recursion.rs:1:14
+  --> $DIR/infinite-vec-type-recursion.rs:6:14
    |
 LL | type X = Vec<X>;
    |              ^
@@ -9,11 +9,14 @@ LL | type X = Vec<X>;
    = help: consider using a struct, enum, or union instead to break the cycle
    = help: see <https://doc.rust-lang.org/reference/types.html#recursive-types> for more information
 note: cycle used when collecting item types in top-level module
-  --> $DIR/infinite-vec-type-recursion.rs:1:1
+  --> $DIR/infinite-vec-type-recursion.rs:3:1
    |
-LL | / type X = Vec<X>;
-LL | |
+LL | / #![cfg_attr(feature, feature(lazy_type_alias))]
+LL | | #![allow(incomplete_features)]
 LL | |
+LL | | type X = Vec<X>;
+...  |
+LL | | #[rustfmt::skip]
 LL | | fn main() { let b: X = Vec::new(); }
    | |____________________________________^
    = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
diff --git a/tests/ui/infinite/infinite-vec-type-recursion.rs b/tests/ui/infinite/infinite-vec-type-recursion.rs
index 35681822598..71ab4a33013 100644
--- a/tests/ui/infinite/infinite-vec-type-recursion.rs
+++ b/tests/ui/infinite/infinite-vec-type-recursion.rs
@@ -1,4 +1,11 @@
+// revisions: feature gated
+
+#![cfg_attr(feature, feature(lazy_type_alias))]
+#![allow(incomplete_features)]
+
 type X = Vec<X>;
-//~^ ERROR cycle detected
+//[gated]~^ ERROR cycle detected
+//[feature]~^^ ERROR: overflow evaluating the requirement `X`
 
+#[rustfmt::skip]
 fn main() { let b: X = Vec::new(); }
diff --git a/tests/ui/inner-static-type-parameter.rs b/tests/ui/inner-static-type-parameter.rs
index c08ccd29d80..a1994e7529c 100644
--- a/tests/ui/inner-static-type-parameter.rs
+++ b/tests/ui/inner-static-type-parameter.rs
@@ -4,7 +4,7 @@ enum Bar<T> { What } //~ ERROR parameter `T` is never used
 
 fn foo<T>() {
     static a: Bar<T> = Bar::What;
-//~^ ERROR can't use generic parameters from outer function
+//~^ ERROR can't use generic parameters from outer item
 }
 
 fn main() {
diff --git a/tests/ui/inner-static-type-parameter.stderr b/tests/ui/inner-static-type-parameter.stderr
index e4e449e4159..ff6558e494b 100644
--- a/tests/ui/inner-static-type-parameter.stderr
+++ b/tests/ui/inner-static-type-parameter.stderr
@@ -1,10 +1,10 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/inner-static-type-parameter.rs:6:19
    |
 LL | fn foo<T>() {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 LL |     static a: Bar<T> = Bar::What;
-   |                   ^ use of generic parameter from outer function
+   |                   ^ use of generic parameter from outer item
 
 error[E0392]: parameter `T` is never used
   --> $DIR/inner-static-type-parameter.rs:3:10
diff --git a/tests/ui/issues/issue-10764.stderr b/tests/ui/issues/issue-10764.stderr
index fcb45affe2c..4d8a85a1397 100644
--- a/tests/ui/issues/issue-10764.stderr
+++ b/tests/ui/issues/issue-10764.stderr
@@ -8,7 +8,6 @@ LL | fn main() { f(bar) }
    |
    = note: expected fn pointer `fn()`
                  found fn item `extern "C" fn() {bar}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 note: function defined here
   --> $DIR/issue-10764.rs:1:4
    |
diff --git a/tests/ui/issues/issue-18389.rs b/tests/ui/issues/issue-18389.rs
index 05a5decf462..26b607f4081 100644
--- a/tests/ui/issues/issue-18389.rs
+++ b/tests/ui/issues/issue-18389.rs
@@ -1,9 +1,4 @@
-#![feature(type_privacy_lints)]
-#![warn(private_bounds)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
+// check-pass
 
 use std::any::Any;
 use std::any::TypeId;
@@ -12,8 +7,7 @@ trait Private<P, R> {
     fn call(&self, p: P, r: R);
 }
 pub trait Public: Private<
-//~^ ERROR private trait `Private<<Self as Public>::P, <Self as Public>::R>` in public interface
-//~| WARNING trait `Private<<Self as Public>::P, <Self as Public>::R>` is more private than the item `Public`
+//~^ WARNING trait `Private<<Self as Public>::P, <Self as Public>::R>` is more private than the item `Public`
     <Self as Public>::P,
     <Self as Public>::R
 > {
diff --git a/tests/ui/issues/issue-18389.stderr b/tests/ui/issues/issue-18389.stderr
index 18ffc4177d7..4706d1ba177 100644
--- a/tests/ui/issues/issue-18389.stderr
+++ b/tests/ui/issues/issue-18389.stderr
@@ -1,39 +1,19 @@
-error[E0445]: private trait `Private<<Self as Public>::P, <Self as Public>::R>` in public interface
-  --> $DIR/issue-18389.rs:14:1
-   |
-LL |   trait Private<P, R> {
-   |   ------------------- `Private<<Self as Public>::P, <Self as Public>::R>` declared as private
-...
-LL | / pub trait Public: Private<
-LL | |
-LL | |
-LL | |     <Self as Public>::P,
-LL | |     <Self as Public>::R
-LL | | > {
-   | |_^ can't leak private trait
-
 warning: trait `Private<<Self as Public>::P, <Self as Public>::R>` is more private than the item `Public`
-  --> $DIR/issue-18389.rs:14:1
+  --> $DIR/issue-18389.rs:9:1
    |
 LL | / pub trait Public: Private<
 LL | |
-LL | |
 LL | |     <Self as Public>::P,
 LL | |     <Self as Public>::R
 LL | | > {
    | |_^ trait `Public` is reachable at visibility `pub`
    |
 note: but trait `Private<<Self as Public>::P, <Self as Public>::R>` is only usable at visibility `pub(crate)`
-  --> $DIR/issue-18389.rs:11:1
+  --> $DIR/issue-18389.rs:6:1
    |
 LL | trait Private<P, R> {
    | ^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/issue-18389.rs:2:9
-   |
-LL | #![warn(private_bounds)]
-   |         ^^^^^^^^^^^^^^
+   = note: `#[warn(private_bounds)]` on by default
 
-error: aborting due to previous error; 1 warning emitted
+warning: 1 warning emitted
 
-For more information about this error, try `rustc --explain E0445`.
diff --git a/tests/ui/issues/issue-18611.stderr b/tests/ui/issues/issue-18611.stderr
index bd18d46223e..784b9b984e9 100644
--- a/tests/ui/issues/issue-18611.stderr
+++ b/tests/ui/issues/issue-18611.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `isize: HasState` is not satisfied
    |
 LL | fn add_state(op: <isize as HasState>::State) {
    |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `HasState` is not implemented for `isize`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-18611.rs:5:1
+   |
+LL | trait HasState {
+   | ^^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-25076.stderr b/tests/ui/issues/issue-25076.stderr
index 159cc484c5d..065bf7def42 100644
--- a/tests/ui/issues/issue-25076.stderr
+++ b/tests/ui/issues/issue-25076.stderr
@@ -6,6 +6,11 @@ LL |     do_fold(bot(), ());
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-25076.rs:3:1
+   |
+LL | trait InOut<T> { type Out; }
+   | ^^^^^^^^^^^^^^
 note: required by a bound in `do_fold`
   --> $DIR/issue-25076.rs:5:18
    |
diff --git a/tests/ui/issues/issue-3214.rs b/tests/ui/issues/issue-3214.rs
index e3c07bb3f72..b2c27f5be95 100644
--- a/tests/ui/issues/issue-3214.rs
+++ b/tests/ui/issues/issue-3214.rs
@@ -1,6 +1,6 @@
 fn foo<T>() {
     struct Foo {
-        x: T, //~ ERROR can't use generic parameters from outer function
+        x: T, //~ ERROR can't use generic parameters from outer item
     }
 
     impl<T> Drop for Foo<T> {
diff --git a/tests/ui/issues/issue-3214.stderr b/tests/ui/issues/issue-3214.stderr
index 7a2d772f0a1..5b57c1baf90 100644
--- a/tests/ui/issues/issue-3214.stderr
+++ b/tests/ui/issues/issue-3214.stderr
@@ -1,12 +1,12 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-3214.rs:3:12
    |
 LL | fn foo<T>() {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 LL |     struct Foo {
-   |               - help: try using a local generic parameter instead: `<T>`
+   |               - help: try introducing a local generic parameter here: `<T>`
 LL |         x: T,
-   |            ^ use of generic parameter from outer function
+   |            ^ use of generic parameter from outer item
 
 error[E0107]: struct takes 0 generic arguments but 1 generic argument was supplied
   --> $DIR/issue-3214.rs:6:22
diff --git a/tests/ui/issues/issue-35570.stderr b/tests/ui/issues/issue-35570.stderr
index 2697d46bdb2..197e80ac097 100644
--- a/tests/ui/issues/issue-35570.stderr
+++ b/tests/ui/issues/issue-35570.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `for<'a> (): Trait2<'a>` is not satisfied
    |
 LL | fn _ice(param: Box<dyn for <'a> Trait1<<() as Trait2<'a>>::Ty>>) {
    |                                        ^^^^^^^^^^^^^^^^^^^^^^ the trait `for<'a> Trait2<'a>` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-35570.rs:4:1
+   |
+LL | trait Trait2<'a> {
+   | ^^^^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-5997-enum.rs b/tests/ui/issues/issue-5997-enum.rs
index 3ff4e036c60..0b1857ae3df 100644
--- a/tests/ui/issues/issue-5997-enum.rs
+++ b/tests/ui/issues/issue-5997-enum.rs
@@ -1,6 +1,6 @@
 fn f<Z>() -> bool {
     enum E { V(Z) }
-    //~^ ERROR can't use generic parameters from outer function
+    //~^ ERROR can't use generic parameters from outer item
     true
 }
 
diff --git a/tests/ui/issues/issue-5997-enum.stderr b/tests/ui/issues/issue-5997-enum.stderr
index 3a79215d3ae..d07258ea7a2 100644
--- a/tests/ui/issues/issue-5997-enum.stderr
+++ b/tests/ui/issues/issue-5997-enum.stderr
@@ -1,12 +1,12 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-5997-enum.rs:2:16
    |
 LL | fn f<Z>() -> bool {
-   |      - type parameter from outer function
+   |      - type parameter from outer item
 LL |     enum E { V(Z) }
-   |           -    ^ use of generic parameter from outer function
+   |           -    ^ use of generic parameter from outer item
    |           |
-   |           help: try using a local generic parameter instead: `<Z>`
+   |           help: try introducing a local generic parameter here: `<Z>`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-5997-struct.rs b/tests/ui/issues/issue-5997-struct.rs
index 6cf510b0a9d..19d994b0dfb 100644
--- a/tests/ui/issues/issue-5997-struct.rs
+++ b/tests/ui/issues/issue-5997-struct.rs
@@ -1,5 +1,5 @@
 fn f<T>() -> bool {
-    struct S(T); //~ ERROR can't use generic parameters from outer function
+    struct S(T); //~ ERROR can't use generic parameters from outer item
 
     true
 }
diff --git a/tests/ui/issues/issue-5997-struct.stderr b/tests/ui/issues/issue-5997-struct.stderr
index d2e97f76771..83229e02c6c 100644
--- a/tests/ui/issues/issue-5997-struct.stderr
+++ b/tests/ui/issues/issue-5997-struct.stderr
@@ -1,12 +1,12 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-5997-struct.rs:2:14
    |
 LL | fn f<T>() -> bool {
-   |      - type parameter from outer function
+   |      - type parameter from outer item
 LL |     struct S(T);
-   |             -^ use of generic parameter from outer function
+   |             -^ use of generic parameter from outer item
    |             |
-   |             help: try using a local generic parameter instead: `<T>`
+   |             help: try introducing a local generic parameter here: `<T>`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/issues/issue-60218.stderr b/tests/ui/issues/issue-60218.stderr
index 563690c9a5d..ae3c4d12025 100644
--- a/tests/ui/issues/issue-60218.stderr
+++ b/tests/ui/issues/issue-60218.stderr
@@ -6,6 +6,11 @@ LL |     trigger_error(vec![], |x: &u32| x)
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-60218.rs:7:1
+   |
+LL | pub trait Foo {}
+   | ^^^^^^^^^^^^^
 note: required by a bound in `trigger_error`
   --> $DIR/issue-60218.rs:13:72
    |
diff --git a/tests/ui/issues/issue-66353.stderr b/tests/ui/issues/issue-66353.stderr
index 71530f58220..7ab7547b42d 100644
--- a/tests/ui/issues/issue-66353.stderr
+++ b/tests/ui/issues/issue-66353.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(): _A` is not satisfied
    |
 LL |     _Func::< <() as _A>::AssocT >::func(());
    |               ^^ the trait `_A` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-66353.rs:7:1
+   |
+LL | trait _A {
+   | ^^^^^^^^
 
 error[E0277]: the trait bound `(): _Func<_>` is not satisfied
   --> $DIR/issue-66353.rs:12:41
@@ -11,6 +17,12 @@ LL |     _Func::< <() as _A>::AssocT >::func(());
    |     ----------------------------------- ^^ the trait `_Func<_>` is not implemented for `()`
    |     |
    |     required by a bound introduced by this call
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-66353.rs:3:1
+   |
+LL | trait _Func<T> {
+   | ^^^^^^^^^^^^^^
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/layout/debug.rs b/tests/ui/layout/debug.rs
index b74a8d3b917..65f2f3b89af 100644
--- a/tests/ui/layout/debug.rs
+++ b/tests/ui/layout/debug.rs
@@ -17,6 +17,9 @@ type Test = Result<i32, i32>; //~ ERROR: layout_of
 
 #[rustc_layout(debug)]
 type T = impl std::fmt::Debug; //~ ERROR: layout_of
+fn f() -> T {
+    0i32
+}
 
 #[rustc_layout(debug)]
 pub union V { //~ ERROR: layout_of
@@ -63,6 +66,13 @@ union P5 { zst: [u16; 0], byte: u8 } //~ ERROR: layout_of
 #[rustc_layout(debug)]
 type X = std::mem::MaybeUninit<u8>; //~ ERROR: layout_of
 
-fn f() -> T {
-    0i32
+#[rustc_layout(debug)]
+const C: () = (); //~ ERROR: can only be applied to
+
+impl S {
+    #[rustc_layout(debug)]
+    const C: () = (); //~ ERROR: can only be applied to
 }
+
+#[rustc_layout(debug)]
+type Impossible = (str, str); //~ ERROR: cannot be known at compilation time
diff --git a/tests/ui/layout/debug.stderr b/tests/ui/layout/debug.stderr
index c20a0198ccb..5162a771b4d 100644
--- a/tests/ui/layout/debug.stderr
+++ b/tests/ui/layout/debug.stderr
@@ -162,7 +162,7 @@ error: layout_of(U) = Layout {
 LL | union U { f1: (i32, i32), f3: i32 }
    | ^^^^^^^
 
-error: layout_of(std::result::Result<i32, i32>) = Layout {
+error: layout_of(Result<i32, i32>) = Layout {
            size: Size(8 bytes),
            align: AbiAndPrefAlign {
                abi: Align(4 bytes),
@@ -344,7 +344,7 @@ error: layout_of(V) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(2 bytes),
        }
-  --> $DIR/debug.rs:22:1
+  --> $DIR/debug.rs:25:1
    |
 LL | pub union V {
    | ^^^^^^^^^^^
@@ -368,7 +368,7 @@ error: layout_of(W) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(2 bytes),
        }
-  --> $DIR/debug.rs:28:1
+  --> $DIR/debug.rs:31:1
    |
 LL | pub union W {
    | ^^^^^^^^^^^
@@ -392,7 +392,7 @@ error: layout_of(Y) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(2 bytes),
        }
-  --> $DIR/debug.rs:34:1
+  --> $DIR/debug.rs:37:1
    |
 LL | pub union Y {
    | ^^^^^^^^^^^
@@ -416,7 +416,7 @@ error: layout_of(P1) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(1 bytes),
        }
-  --> $DIR/debug.rs:41:1
+  --> $DIR/debug.rs:44:1
    |
 LL | union P1 { x: u32 }
    | ^^^^^^^^
@@ -440,7 +440,7 @@ error: layout_of(P2) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(1 bytes),
        }
-  --> $DIR/debug.rs:45:1
+  --> $DIR/debug.rs:48:1
    |
 LL | union P2 { x: (u32, u32) }
    | ^^^^^^^^
@@ -464,7 +464,7 @@ error: layout_of(P3) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(1 bytes),
        }
-  --> $DIR/debug.rs:53:1
+  --> $DIR/debug.rs:56:1
    |
 LL | union P3 { x: F32x4 }
    | ^^^^^^^^
@@ -488,7 +488,7 @@ error: layout_of(P4) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(1 bytes),
        }
-  --> $DIR/debug.rs:57:1
+  --> $DIR/debug.rs:60:1
    |
 LL | union P4 { x: E }
    | ^^^^^^^^
@@ -517,12 +517,12 @@ error: layout_of(P5) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(1 bytes),
        }
-  --> $DIR/debug.rs:61:1
+  --> $DIR/debug.rs:64:1
    |
 LL | union P5 { zst: [u16; 0], byte: u8 }
    | ^^^^^^^^
 
-error: layout_of(std::mem::MaybeUninit<u8>) = Layout {
+error: layout_of(MaybeUninit<u8>) = Layout {
            size: Size(1 bytes),
            align: AbiAndPrefAlign {
                abi: Align(1 bytes),
@@ -546,10 +546,32 @@ error: layout_of(std::mem::MaybeUninit<u8>) = Layout {
            max_repr_align: None,
            unadjusted_abi_align: Align(1 bytes),
        }
-  --> $DIR/debug.rs:64:1
+  --> $DIR/debug.rs:67:1
    |
 LL | type X = std::mem::MaybeUninit<u8>;
    | ^^^^^^
 
-error: aborting due to 14 previous errors
+error: `#[rustc_layout]` can only be applied to `struct`/`enum`/`union` declarations and type aliases
+  --> $DIR/debug.rs:70:1
+   |
+LL | const C: () = ();
+   | ^^^^^^^^^^^
+
+error[E0277]: the size for values of type `str` cannot be known at compilation time
+  --> $DIR/debug.rs:78:19
+   |
+LL | type Impossible = (str, str);
+   |                   ^^^^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `Sized` is not implemented for `str`
+   = note: only the last element of a tuple may have a dynamically sized type
+
+error: `#[rustc_layout]` can only be applied to `struct`/`enum`/`union` declarations and type aliases
+  --> $DIR/debug.rs:74:5
+   |
+LL |     const C: () = ();
+   |     ^^^^^^^^^^^
+
+error: aborting due to 17 previous errors
 
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/layout/homogeneous-aggr-transparent.rs b/tests/ui/layout/homogeneous-aggr-transparent.rs
new file mode 100644
index 00000000000..9703d2bf294
--- /dev/null
+++ b/tests/ui/layout/homogeneous-aggr-transparent.rs
@@ -0,0 +1,44 @@
+#![feature(rustc_attrs)]
+#![feature(transparent_unions)]
+use std::marker::PhantomData;
+
+// Regression test for #115664. We want to ensure that `repr(transparent)` wrappers do not affect
+// the result of `homogeneous_aggregate`.
+
+type Tuple = (f32, f32, f32);
+
+struct Zst;
+
+#[repr(transparent)]
+struct Wrapper1<T>(T);
+#[repr(transparent)]
+struct Wrapper2<T>((), Zst, T);
+#[repr(transparent)]
+struct Wrapper3<T>(T, [u8; 0], PhantomData<u64>);
+#[repr(transparent)]
+union WrapperUnion<T: Copy> {
+    nothing: (),
+    something: T,
+}
+
+#[rustc_layout(homogeneous_aggregate)]
+pub type Test0 = Tuple;
+//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+
+#[rustc_layout(homogeneous_aggregate)]
+pub type Test1 = Wrapper1<Tuple>;
+//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+
+#[rustc_layout(homogeneous_aggregate)]
+pub type Test2 = Wrapper2<Tuple>;
+//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+
+#[rustc_layout(homogeneous_aggregate)]
+pub type Test3 = Wrapper3<Tuple>;
+//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+
+#[rustc_layout(homogeneous_aggregate)]
+pub type Test4 = WrapperUnion<Tuple>;
+//~^ ERROR homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+
+fn main() {}
diff --git a/tests/ui/layout/homogeneous-aggr-transparent.stderr b/tests/ui/layout/homogeneous-aggr-transparent.stderr
new file mode 100644
index 00000000000..99eb703ac82
--- /dev/null
+++ b/tests/ui/layout/homogeneous-aggr-transparent.stderr
@@ -0,0 +1,32 @@
+error: homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+  --> $DIR/homogeneous-aggr-transparent.rs:25:1
+   |
+LL | pub type Test0 = Tuple;
+   | ^^^^^^^^^^^^^^
+
+error: homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+  --> $DIR/homogeneous-aggr-transparent.rs:29:1
+   |
+LL | pub type Test1 = Wrapper1<Tuple>;
+   | ^^^^^^^^^^^^^^
+
+error: homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+  --> $DIR/homogeneous-aggr-transparent.rs:33:1
+   |
+LL | pub type Test2 = Wrapper2<Tuple>;
+   | ^^^^^^^^^^^^^^
+
+error: homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+  --> $DIR/homogeneous-aggr-transparent.rs:37:1
+   |
+LL | pub type Test3 = Wrapper3<Tuple>;
+   | ^^^^^^^^^^^^^^
+
+error: homogeneous_aggregate: Ok(Homogeneous(Reg { kind: Float, size: Size(4 bytes) }))
+  --> $DIR/homogeneous-aggr-transparent.rs:41:1
+   |
+LL | pub type Test4 = WrapperUnion<Tuple>;
+   | ^^^^^^^^^^^^^^
+
+error: aborting due to 5 previous errors
+
diff --git a/tests/ui/layout/layout-cycle.rs b/tests/ui/layout/layout-cycle.rs
new file mode 100644
index 00000000000..85685058e49
--- /dev/null
+++ b/tests/ui/layout/layout-cycle.rs
@@ -0,0 +1,31 @@
+// build-fail
+//~^ ERROR: a cycle occurred during layout computation
+//~| ERROR: cycle detected when computing layout of
+
+// Issue #111176 -- ensure that we do not emit ICE on layout cycles
+
+use std::mem;
+
+pub struct S<T: Tr> {
+    pub f: <T as Tr>::I,
+}
+
+pub trait Tr {
+    type I: Tr;
+}
+
+impl<T: Tr> Tr for S<T> {
+    type I = S<S<T>>;
+}
+
+impl Tr for () {
+    type I = ();
+}
+
+fn foo<T: Tr>() -> usize {
+    mem::size_of::<S<T>>()
+}
+
+fn main() {
+    println!("{}", foo::<S<()>>());
+}
diff --git a/tests/ui/layout/layout-cycle.stderr b/tests/ui/layout/layout-cycle.stderr
new file mode 100644
index 00000000000..a3cdb7edcc2
--- /dev/null
+++ b/tests/ui/layout/layout-cycle.stderr
@@ -0,0 +1,11 @@
+error[E0391]: cycle detected when computing layout of `S<S<()>>`
+   |
+   = note: ...which requires computing layout of `<S<()> as Tr>::I`...
+   = note: ...which again requires computing layout of `S<S<()>>`, completing the cycle
+   = note: see https://rustc-dev-guide.rust-lang.org/overview.html#queries and https://rustc-dev-guide.rust-lang.org/query.html for more information
+
+error: failed to get layout for S<S<()>>: a cycle occurred during layout computation
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0391`.
diff --git a/tests/ui/layout/zero-sized-array-enum-niche.stderr b/tests/ui/layout/zero-sized-array-enum-niche.stderr
index df9f1cc8d10..8161f97dde0 100644
--- a/tests/ui/layout/zero-sized-array-enum-niche.stderr
+++ b/tests/ui/layout/zero-sized-array-enum-niche.stderr
@@ -1,4 +1,4 @@
-error: layout_of(std::result::Result<[u32; 0], bool>) = Layout {
+error: layout_of(Result<[u32; 0], bool>) = Layout {
            size: Size(4 bytes),
            align: AbiAndPrefAlign {
                abi: Align(4 bytes),
@@ -232,7 +232,7 @@ error: layout_of(MultipleAlignments) = Layout {
 LL | enum MultipleAlignments {
    | ^^^^^^^^^^^^^^^^^^^^^^^
 
-error: layout_of(std::result::Result<[u32; 0], Packed<std::num::NonZeroU16>>) = Layout {
+error: layout_of(Result<[u32; 0], Packed<NonZeroU16>>) = Layout {
            size: Size(4 bytes),
            align: AbiAndPrefAlign {
                abi: Align(4 bytes),
@@ -337,7 +337,7 @@ error: layout_of(std::result::Result<[u32; 0], Packed<std::num::NonZeroU16>>) =
 LL | type NicheLosesToTagged = Result<[u32; 0], Packed<std::num::NonZeroU16>>;
    | ^^^^^^^^^^^^^^^^^^^^^^^
 
-error: layout_of(std::result::Result<[u32; 0], Packed<U16IsZero>>) = Layout {
+error: layout_of(Result<[u32; 0], Packed<U16IsZero>>) = Layout {
            size: Size(4 bytes),
            align: AbiAndPrefAlign {
                abi: Align(4 bytes),
diff --git a/tests/ui/lifetimes/anonymize-unnamed-bound-vars-in-binders.rs b/tests/ui/lifetimes/anonymize-unnamed-bound-vars-in-binders.rs
new file mode 100644
index 00000000000..05e3763e9d1
--- /dev/null
+++ b/tests/ui/lifetimes/anonymize-unnamed-bound-vars-in-binders.rs
@@ -0,0 +1,27 @@
+// build-pass
+// issue: #115807
+
+trait Chip: for<'a> TraitWithLifetime<'a> + SomeMarker {
+    fn compute(&self);
+}
+
+trait SomeMarker {}
+
+trait TraitWithLifetime<'a>: SomeMarker {}
+
+trait Machine {
+    fn run();
+}
+
+struct BasicMachine;
+
+impl Machine for BasicMachine {
+    fn run() {
+        let chips: [&dyn Chip; 0] = [];
+        let _ = chips.map(|chip| chip.compute());
+    }
+}
+
+fn main() {
+    BasicMachine::run();
+}
diff --git a/tests/ui/lifetimes/issue-95023.stderr b/tests/ui/lifetimes/issue-95023.stderr
index 5b93eff8614..6361d8ad30b 100644
--- a/tests/ui/lifetimes/issue-95023.stderr
+++ b/tests/ui/lifetimes/issue-95023.stderr
@@ -36,7 +36,7 @@ error[E0220]: associated type `B` not found for `Self`
   --> $DIR/issue-95023.rs:6:44
    |
 LL |     fn foo<const N: usize>(&self) -> Self::B<{N}>;
-   |                                            ^ associated type `B` not found
+   |                                            ^ help: `Self` has the following associated type: `Output`
 
 error: aborting due to 5 previous errors
 
diff --git a/tests/ui/lifetimes/lifetime-elision-return-type-trait.stderr b/tests/ui/lifetimes/lifetime-elision-return-type-trait.stderr
index ef1127c59ac..421ab3fcf4e 100644
--- a/tests/ui/lifetimes/lifetime-elision-return-type-trait.stderr
+++ b/tests/ui/lifetimes/lifetime-elision-return-type-trait.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `Result<(), _>: Future` is not satisfied
    |
 LL | fn foo() -> impl Future<Item=(), Error=Box<dyn Error>> {
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Future` is not implemented for `Result<(), _>`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/lifetime-elision-return-type-trait.rs:1:1
+   |
+LL | trait Future {
+   | ^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/limits/issue-55878.stderr b/tests/ui/limits/issue-55878.stderr
index 510b36edd8f..f0c7210dde7 100644
--- a/tests/ui/limits/issue-55878.stderr
+++ b/tests/ui/limits/issue-55878.stderr
@@ -1,6 +1,8 @@
-error[E0080]: values of the type `[u8; usize::MAX]` are too big for the current architecture
+error[E0080]: evaluation of constant value failed
   --> $SRC_DIR/core/src/mem/mod.rs:LL:COL
    |
+   = note: values of the type `[u8; usize::MAX]` are too big for the current architecture
+   |
 note: inside `std::mem::size_of::<[u8; usize::MAX]>`
   --> $SRC_DIR/core/src/mem/mod.rs:LL:COL
 note: inside `main`
diff --git a/tests/ui/limits/issue-56762.rs b/tests/ui/limits/issue-56762.rs
index ed7ee4da85d..1c7facb045d 100644
--- a/tests/ui/limits/issue-56762.rs
+++ b/tests/ui/limits/issue-56762.rs
@@ -14,8 +14,10 @@ impl TooBigArray {
 }
 
 static MY_TOO_BIG_ARRAY_1: TooBigArray = TooBigArray::new();
-//~^ ERROR values of the type `[u8; 2305843009213693951]` are too big
+//~^ ERROR could not evaluate static initializer
+//~| too big
 static MY_TOO_BIG_ARRAY_2: [u8; HUGE_SIZE] = [0x00; HUGE_SIZE];
-//~^ ERROR values of the type `[u8; 2305843009213693951]` are too big
+//~^ ERROR could not evaluate static initializer
+//~| too big
 
 fn main() { }
diff --git a/tests/ui/limits/issue-56762.stderr b/tests/ui/limits/issue-56762.stderr
index 29f2a8859ee..3a6c3559ac1 100644
--- a/tests/ui/limits/issue-56762.stderr
+++ b/tests/ui/limits/issue-56762.stderr
@@ -1,14 +1,14 @@
-error[E0080]: values of the type `[u8; 2305843009213693951]` are too big for the current architecture
+error[E0080]: could not evaluate static initializer
   --> $DIR/issue-56762.rs:16:1
    |
 LL | static MY_TOO_BIG_ARRAY_1: TooBigArray = TooBigArray::new();
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ values of the type `[u8; 2305843009213693951]` are too big for the current architecture
 
-error[E0080]: values of the type `[u8; 2305843009213693951]` are too big for the current architecture
-  --> $DIR/issue-56762.rs:18:1
+error[E0080]: could not evaluate static initializer
+  --> $DIR/issue-56762.rs:19:1
    |
 LL | static MY_TOO_BIG_ARRAY_2: [u8; HUGE_SIZE] = [0x00; HUGE_SIZE];
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ values of the type `[u8; 2305843009213693951]` are too big for the current architecture
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/linkage-attr/common-linkage-non-zero-init.rs b/tests/ui/linkage-attr/common-linkage-non-zero-init.rs
new file mode 100644
index 00000000000..ce8d9848e42
--- /dev/null
+++ b/tests/ui/linkage-attr/common-linkage-non-zero-init.rs
@@ -0,0 +1,14 @@
+// build-fail
+// failure-status: 101
+// known-bug: #109681
+
+// This test verifies that we continue to hit the LLVM error for common linkage with non-zero
+// initializers, since it generates invalid LLVM IR.
+// Linkages are internal features marked as perma-unstable, so we don't need to fix the issue
+// for now.
+#![crate_type="lib"]
+#![feature(linkage)]
+
+#[linkage = "common"]
+#[no_mangle]
+pub static TEST: bool = true;
diff --git a/tests/ui/linkage-attr/common-linkage-non-zero-init.stderr b/tests/ui/linkage-attr/common-linkage-non-zero-init.stderr
new file mode 100644
index 00000000000..667bb3ec130
--- /dev/null
+++ b/tests/ui/linkage-attr/common-linkage-non-zero-init.stderr
@@ -0,0 +1,3 @@
+'common' global must have a zero initializer!
+ptr @TEST
+LLVM ERROR: Broken module found, compilation aborted!
diff --git a/tests/ui/lint-group-forbid-always-trumps-cli.stderr b/tests/ui/lint-group-forbid-always-trumps-cli.stderr
index 8910af87ca2..cd042179cce 100644
--- a/tests/ui/lint-group-forbid-always-trumps-cli.stderr
+++ b/tests/ui/lint-group-forbid-always-trumps-cli.stderr
@@ -5,6 +5,7 @@ LL |     let x = 1;
    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
    |
    = note: `-F unused-variables` implied by `-F unused`
+   = help: to override `-F unused` add `#[allow(unused_variables)]`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/lint/cli-unknown-force-warn.rs b/tests/ui/lint/cli-unknown-force-warn.rs
index f3dea87a6b6..a9e4e4a6017 100644
--- a/tests/ui/lint/cli-unknown-force-warn.rs
+++ b/tests/ui/lint/cli-unknown-force-warn.rs
@@ -1,7 +1,11 @@
 // Checks that rustc correctly errors when passed an invalid lint with
 // `--force-warn`. This is a regression test for issue #86958.
-//
+
+// check-pass
 // compile-flags: --force-warn foo-qux
+
 // error-pattern: unknown lint: `foo_qux`
+// error-pattern: requested on the command line with `--force-warn foo_qux`
+// error-pattern: `#[warn(unknown_lints)]` on by default
 
 fn main() {}
diff --git a/tests/ui/lint/cli-unknown-force-warn.stderr b/tests/ui/lint/cli-unknown-force-warn.stderr
index 9ce9f405aee..2ee718a8c8e 100644
--- a/tests/ui/lint/cli-unknown-force-warn.stderr
+++ b/tests/ui/lint/cli-unknown-force-warn.stderr
@@ -1,11 +1,16 @@
-error[E0602]: unknown lint: `foo_qux`
+warning[E0602]: unknown lint: `foo_qux`
    |
    = note: requested on the command line with `--force-warn foo_qux`
+   = note: `#[warn(unknown_lints)]` on by default
 
-error[E0602]: unknown lint: `foo_qux`
+warning[E0602]: unknown lint: `foo_qux`
    |
    = note: requested on the command line with `--force-warn foo_qux`
 
-error: aborting due to 2 previous errors
+warning[E0602]: unknown lint: `foo_qux`
+   |
+   = note: requested on the command line with `--force-warn foo_qux`
+
+warning: 3 warnings emitted
 
 For more information about this error, try `rustc --explain E0602`.
diff --git a/tests/ui/lint/command-line-lint-group-deny.stderr b/tests/ui/lint/command-line-lint-group-deny.stderr
index 04c3f6f2637..59d8429ea69 100644
--- a/tests/ui/lint/command-line-lint-group-deny.stderr
+++ b/tests/ui/lint/command-line-lint-group-deny.stderr
@@ -5,6 +5,7 @@ LL |     let _InappropriateCamelCasing = true;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_inappropriate_camel_casing`
    |
    = note: `-D non-snake-case` implied by `-D bad-style`
+   = help: to override `-D bad-style` add `#[allow(non_snake_case)]`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/lint/command-line-lint-group-forbid.stderr b/tests/ui/lint/command-line-lint-group-forbid.stderr
index 73678214063..486d32a9f08 100644
--- a/tests/ui/lint/command-line-lint-group-forbid.stderr
+++ b/tests/ui/lint/command-line-lint-group-forbid.stderr
@@ -5,6 +5,7 @@ LL |     let _InappropriateCamelCasing = true;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_inappropriate_camel_casing`
    |
    = note: `-F non-snake-case` implied by `-F bad-style`
+   = help: to override `-F bad-style` add `#[allow(non_snake_case)]`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/lint/command-line-lint-group-warn.stderr b/tests/ui/lint/command-line-lint-group-warn.stderr
index e9c80b4ef21..cfe346a5bf6 100644
--- a/tests/ui/lint/command-line-lint-group-warn.stderr
+++ b/tests/ui/lint/command-line-lint-group-warn.stderr
@@ -5,6 +5,7 @@ LL |     let _InappropriateCamelCasing = true;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^ help: convert the identifier to snake case: `_inappropriate_camel_casing`
    |
    = note: `-W non-snake-case` implied by `-W bad-style`
+   = help: to override `-W bad-style` add `#[allow(non_snake_case)]`
 
 warning: 1 warning emitted
 
diff --git a/tests/ui/lint/expr-field.rs b/tests/ui/lint/expr-field.rs
new file mode 100644
index 00000000000..638fbf521c4
--- /dev/null
+++ b/tests/ui/lint/expr-field.rs
@@ -0,0 +1,15 @@
+// check-pass
+
+pub struct A {
+    pub x: u32,
+}
+
+#[deny(unused_comparisons)]
+pub fn foo(y: u32) -> A {
+    A {
+        #[allow(unused_comparisons)]
+        x: if y < 0 { 1 } else { 2 },
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/lint/force-warn/cap-lints-warn-allowed-warn-by-default-lint.stderr b/tests/ui/lint/force-warn/cap-lints-warn-allowed-warn-by-default-lint.stderr
index d1b764b3414..01c2ed84c63 100644
--- a/tests/ui/lint/force-warn/cap-lints-warn-allowed-warn-by-default-lint.stderr
+++ b/tests/ui/lint/force-warn/cap-lints-warn-allowed-warn-by-default-lint.stderr
@@ -7,6 +7,7 @@ LL |         0...100 => true,
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
    = note: `--force-warn ellipsis-inclusive-range-patterns` implied by `--force-warn rust-2021-compatibility`
+   = help: to override `--force-warn rust-2021-compatibility` add `#[allow(ellipsis_inclusive_range_patterns)]`
 
 warning: 1 warning emitted
 
diff --git a/tests/ui/lint/force-warn/lint-group-allow-warnings.stderr b/tests/ui/lint/force-warn/lint-group-allow-warnings.stderr
index dc7b1b7b98d..e925a195fb1 100644
--- a/tests/ui/lint/force-warn/lint-group-allow-warnings.stderr
+++ b/tests/ui/lint/force-warn/lint-group-allow-warnings.stderr
@@ -5,6 +5,7 @@ LL | pub fn FUNCTION() {}
    |        ^^^^^^^^ help: convert the identifier to snake case: `function`
    |
    = note: `--force-warn non-snake-case` implied by `--force-warn nonstandard-style`
+   = help: to override `--force-warn nonstandard-style` add `#[allow(non_snake_case)]`
 
 warning: 1 warning emitted
 
diff --git a/tests/ui/lint/force-warn/lint-group-allowed-cli-warn-by-default-lint.stderr b/tests/ui/lint/force-warn/lint-group-allowed-cli-warn-by-default-lint.stderr
index e17630fd358..b0cd3ddd26f 100644
--- a/tests/ui/lint/force-warn/lint-group-allowed-cli-warn-by-default-lint.stderr
+++ b/tests/ui/lint/force-warn/lint-group-allowed-cli-warn-by-default-lint.stderr
@@ -7,6 +7,7 @@ LL | pub fn function(_x: Box<SomeTrait>) {}
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
    = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2018-idioms`
+   = help: to override `--force-warn rust-2018-idioms` add `#[allow(bare_trait_objects)]`
 help: use `dyn`
    |
 LL | pub fn function(_x: Box<dyn SomeTrait>) {}
diff --git a/tests/ui/lint/force-warn/lint-group-allowed-lint-group.stderr b/tests/ui/lint/force-warn/lint-group-allowed-lint-group.stderr
index 72198541a70..8c841916c93 100644
--- a/tests/ui/lint/force-warn/lint-group-allowed-lint-group.stderr
+++ b/tests/ui/lint/force-warn/lint-group-allowed-lint-group.stderr
@@ -7,6 +7,7 @@ LL | pub fn function(_x: Box<SomeTrait>) {}
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
    = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2018-idioms`
+   = help: to override `--force-warn rust-2018-idioms` add `#[allow(bare_trait_objects)]`
 help: use `dyn`
    |
 LL | pub fn function(_x: Box<dyn SomeTrait>) {}
diff --git a/tests/ui/lint/force-warn/lint-group-allowed-warn-by-default-lint.stderr b/tests/ui/lint/force-warn/lint-group-allowed-warn-by-default-lint.stderr
index 52c870ac28a..c0144205d6a 100644
--- a/tests/ui/lint/force-warn/lint-group-allowed-warn-by-default-lint.stderr
+++ b/tests/ui/lint/force-warn/lint-group-allowed-warn-by-default-lint.stderr
@@ -7,6 +7,7 @@ LL | pub fn function(_x: Box<SomeTrait>) {}
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
    = note: `--force-warn bare-trait-objects` implied by `--force-warn rust-2018-idioms`
+   = help: to override `--force-warn rust-2018-idioms` add `#[allow(bare_trait_objects)]`
 help: use `dyn`
    |
 LL | pub fn function(_x: Box<dyn SomeTrait>) {}
diff --git a/tests/ui/lint/future-incompat-test.stderr b/tests/ui/lint/future-incompat-test.stderr
index 52674a84384..2951f904fb5 100644
--- a/tests/ui/lint/future-incompat-test.stderr
+++ b/tests/ui/lint/future-incompat-test.stderr
@@ -6,4 +6,5 @@ LL |     let x = 1;
    |         ^ help: if this is intentional, prefix it with an underscore: `_x`
    |
    = note: `-A unused-variables` implied by `-A unused`
+   = help: to override `-A unused` add `#[allow(unused_variables)]`
 
diff --git a/tests/ui/lint/issue-99387.rs b/tests/ui/lint/issue-99387.rs
index ba5031167e3..571d4194fe7 100644
--- a/tests/ui/lint/issue-99387.rs
+++ b/tests/ui/lint/issue-99387.rs
@@ -2,7 +2,7 @@
 //! opaque types.
 
 #![feature(type_alias_impl_trait)]
-#![allow(private_in_public)]
+#![allow(private_interfaces)]
 
 pub type Successors<'a> = impl Iterator<Item = &'a ()>;
 
diff --git a/tests/ui/lint/lint-ctypes-94223.rs b/tests/ui/lint/lint-ctypes-94223.rs
index 70dd2a71f26..ac24f61b0ac 100644
--- a/tests/ui/lint/lint-ctypes-94223.rs
+++ b/tests/ui/lint/lint-ctypes-94223.rs
@@ -24,6 +24,13 @@ enum BadUnion {
 type Foo = extern "C" fn([u8]);
 //~^ ERROR `extern` fn uses type `[u8]`, which is not FFI-safe
 
+pub trait FooTrait {
+    type FooType;
+}
+
+pub type Foo2<T> = extern "C" fn(Option<&<T as FooTrait>::FooType>);
+//~^ ERROR `extern` fn uses type `Option<&<T as FooTrait>::FooType>`, which is not FFI-safe
+
 pub struct FfiUnsafe;
 
 #[allow(improper_ctypes_definitions)]
diff --git a/tests/ui/lint/lint-ctypes-94223.stderr b/tests/ui/lint/lint-ctypes-94223.stderr
index 49e64ed5140..bd127cf6004 100644
--- a/tests/ui/lint/lint-ctypes-94223.stderr
+++ b/tests/ui/lint/lint-ctypes-94223.stderr
@@ -66,8 +66,17 @@ LL | type Foo = extern "C" fn([u8]);
    = help: consider using a raw pointer instead
    = note: slices have no C equivalent
 
+error: `extern` fn uses type `Option<&<T as FooTrait>::FooType>`, which is not FFI-safe
+  --> $DIR/lint-ctypes-94223.rs:31:20
+   |
+LL | pub type Foo2<T> = extern "C" fn(Option<&<T as FooTrait>::FooType>);
+   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
+   = note: enum has no representation hint
+
 error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
-  --> $DIR/lint-ctypes-94223.rs:34:17
+  --> $DIR/lint-ctypes-94223.rs:41:17
    |
 LL | pub static BAD: extern "C" fn(FfiUnsafe) = f;
    |                 ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -75,13 +84,13 @@ LL | pub static BAD: extern "C" fn(FfiUnsafe) = f;
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 note: the type is defined here
-  --> $DIR/lint-ctypes-94223.rs:27:1
+  --> $DIR/lint-ctypes-94223.rs:34:1
    |
 LL | pub struct FfiUnsafe;
    | ^^^^^^^^^^^^^^^^^^^^
 
 error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
-  --> $DIR/lint-ctypes-94223.rs:37:30
+  --> $DIR/lint-ctypes-94223.rs:44:30
    |
 LL | pub static BAD_TWICE: Result<extern "C" fn(FfiUnsafe), extern "C" fn(FfiUnsafe)> = Ok(f);
    |                              ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -89,13 +98,13 @@ LL | pub static BAD_TWICE: Result<extern "C" fn(FfiUnsafe), extern "C" fn(FfiUns
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 note: the type is defined here
-  --> $DIR/lint-ctypes-94223.rs:27:1
+  --> $DIR/lint-ctypes-94223.rs:34:1
    |
 LL | pub struct FfiUnsafe;
    | ^^^^^^^^^^^^^^^^^^^^
 
 error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
-  --> $DIR/lint-ctypes-94223.rs:37:56
+  --> $DIR/lint-ctypes-94223.rs:44:56
    |
 LL | pub static BAD_TWICE: Result<extern "C" fn(FfiUnsafe), extern "C" fn(FfiUnsafe)> = Ok(f);
    |                                                        ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -103,13 +112,13 @@ LL | pub static BAD_TWICE: Result<extern "C" fn(FfiUnsafe), extern "C" fn(FfiUns
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 note: the type is defined here
-  --> $DIR/lint-ctypes-94223.rs:27:1
+  --> $DIR/lint-ctypes-94223.rs:34:1
    |
 LL | pub struct FfiUnsafe;
    | ^^^^^^^^^^^^^^^^^^^^
 
 error: `extern` fn uses type `FfiUnsafe`, which is not FFI-safe
-  --> $DIR/lint-ctypes-94223.rs:41:22
+  --> $DIR/lint-ctypes-94223.rs:48:22
    |
 LL | pub const BAD_CONST: extern "C" fn(FfiUnsafe) = f;
    |                      ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
@@ -117,10 +126,10 @@ LL | pub const BAD_CONST: extern "C" fn(FfiUnsafe) = f;
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 note: the type is defined here
-  --> $DIR/lint-ctypes-94223.rs:27:1
+  --> $DIR/lint-ctypes-94223.rs:34:1
    |
 LL | pub struct FfiUnsafe;
    | ^^^^^^^^^^^^^^^^^^^^
 
-error: aborting due to 11 previous errors
+error: aborting due to 12 previous errors
 
diff --git a/tests/ui/lint/lint-ctypes-fn.rs b/tests/ui/lint/lint-ctypes-fn.rs
index d3b36a9d59c..14831e24718 100644
--- a/tests/ui/lint/lint-ctypes-fn.rs
+++ b/tests/ui/lint/lint-ctypes-fn.rs
@@ -1,6 +1,6 @@
 #![feature(rustc_private)]
 
-#![allow(private_in_public)]
+#![allow(private_interfaces)]
 #![deny(improper_ctypes_definitions)]
 
 extern crate libc;
diff --git a/tests/ui/lint/lint-ctypes-option-nonnull-unsized.rs b/tests/ui/lint/lint-ctypes-option-nonnull-unsized.rs
new file mode 100644
index 00000000000..ca08eb23a57
--- /dev/null
+++ b/tests/ui/lint/lint-ctypes-option-nonnull-unsized.rs
@@ -0,0 +1,8 @@
+#![deny(improper_ctypes_definitions)]
+
+extern "C" fn foo<T: ?Sized + 'static>() -> Option<&'static T> {
+    //~^ ERROR `extern` fn uses type `Option<&T>`, which is not FFI-safe
+    None
+}
+
+fn main() {}
diff --git a/tests/ui/lint/lint-ctypes-option-nonnull-unsized.stderr b/tests/ui/lint/lint-ctypes-option-nonnull-unsized.stderr
new file mode 100644
index 00000000000..f59fb3cc750
--- /dev/null
+++ b/tests/ui/lint/lint-ctypes-option-nonnull-unsized.stderr
@@ -0,0 +1,16 @@
+error: `extern` fn uses type `Option<&T>`, which is not FFI-safe
+  --> $DIR/lint-ctypes-option-nonnull-unsized.rs:3:45
+   |
+LL | extern "C" fn foo<T: ?Sized + 'static>() -> Option<&'static T> {
+   |                                             ^^^^^^^^^^^^^^^^^^ not FFI-safe
+   |
+   = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
+   = note: enum has no representation hint
+note: the lint level is defined here
+  --> $DIR/lint-ctypes-option-nonnull-unsized.rs:1:9
+   |
+LL | #![deny(improper_ctypes_definitions)]
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/lint/lint-ctypes.rs b/tests/ui/lint/lint-ctypes.rs
index 9165e14b7ff..3dd731625f4 100644
--- a/tests/ui/lint/lint-ctypes.rs
+++ b/tests/ui/lint/lint-ctypes.rs
@@ -1,6 +1,6 @@
 #![feature(rustc_private)]
 
-#![allow(private_in_public)]
+#![allow(private_interfaces)]
 #![deny(improper_ctypes)]
 
 extern crate libc;
diff --git a/tests/ui/lint/lint-pre-expansion-extern-module.stderr b/tests/ui/lint/lint-pre-expansion-extern-module.stderr
index ce3e8806a9e..8a6e1531d5f 100644
--- a/tests/ui/lint/lint-pre-expansion-extern-module.stderr
+++ b/tests/ui/lint/lint-pre-expansion-extern-module.stderr
@@ -7,6 +7,7 @@ LL | pub fn try() {}
    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
    = note: for more information, see issue #49716 <https://github.com/rust-lang/rust/issues/49716>
    = note: `-W keyword-idents` implied by `-W rust-2018-compatibility`
+   = help: to override `-W rust-2018-compatibility` add `#[allow(keyword_idents)]`
 
 warning: 1 warning emitted
 
diff --git a/tests/ui/lint/lint-removed-cmdline-deny.rs b/tests/ui/lint/lint-removed-cmdline-deny.rs
new file mode 100644
index 00000000000..8cf91cf60eb
--- /dev/null
+++ b/tests/ui/lint/lint-removed-cmdline-deny.rs
@@ -0,0 +1,13 @@
+// The raw_pointer_derived lint warns about its removal
+// cc #30346
+
+// compile-flags:-D renamed-and-removed-lints -D raw_pointer_derive
+
+// error-pattern:lint `raw_pointer_derive` has been removed
+// error-pattern:requested on the command line with `-D raw_pointer_derive`
+// error-pattern:requested on the command line with `-D renamed-and-removed-lints`
+
+#![warn(unused)]
+
+#[deny(warnings)]
+fn main() { let unused = (); }
diff --git a/tests/ui/lint/lint-removed-cmdline-deny.stderr b/tests/ui/lint/lint-removed-cmdline-deny.stderr
new file mode 100644
index 00000000000..80c85d01e53
--- /dev/null
+++ b/tests/ui/lint/lint-removed-cmdline-deny.stderr
@@ -0,0 +1,28 @@
+error: lint `raw_pointer_derive` has been removed: using derive with raw pointers is ok
+   |
+   = note: requested on the command line with `-D raw_pointer_derive`
+   = note: requested on the command line with `-D renamed-and-removed-lints`
+
+error: lint `raw_pointer_derive` has been removed: using derive with raw pointers is ok
+   |
+   = note: requested on the command line with `-D raw_pointer_derive`
+
+error: lint `raw_pointer_derive` has been removed: using derive with raw pointers is ok
+   |
+   = note: requested on the command line with `-D raw_pointer_derive`
+
+error: unused variable: `unused`
+  --> $DIR/lint-removed-cmdline-deny.rs:13:17
+   |
+LL | fn main() { let unused = (); }
+   |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_unused`
+   |
+note: the lint level is defined here
+  --> $DIR/lint-removed-cmdline-deny.rs:12:8
+   |
+LL | #[deny(warnings)]
+   |        ^^^^^^^^
+   = note: `#[deny(unused_variables)]` implied by `#[deny(warnings)]`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/lint/lint-removed-cmdline.rs b/tests/ui/lint/lint-removed-cmdline.rs
index 462beabb945..34373df3a9c 100644
--- a/tests/ui/lint/lint-removed-cmdline.rs
+++ b/tests/ui/lint/lint-removed-cmdline.rs
@@ -4,6 +4,7 @@
 // compile-flags:-D raw_pointer_derive
 
 // error-pattern:lint `raw_pointer_derive` has been removed
+// error-pattern:`#[warn(renamed_and_removed_lints)]` on by default
 // error-pattern:requested on the command line with `-D raw_pointer_derive`
 
 #![warn(unused)]
diff --git a/tests/ui/lint/lint-removed-cmdline.stderr b/tests/ui/lint/lint-removed-cmdline.stderr
index 9be532ef234..ebfae34ade9 100644
--- a/tests/ui/lint/lint-removed-cmdline.stderr
+++ b/tests/ui/lint/lint-removed-cmdline.stderr
@@ -1,6 +1,7 @@
 warning: lint `raw_pointer_derive` has been removed: using derive with raw pointers is ok
    |
    = note: requested on the command line with `-D raw_pointer_derive`
+   = note: `#[warn(renamed_and_removed_lints)]` on by default
 
 warning: lint `raw_pointer_derive` has been removed: using derive with raw pointers is ok
    |
@@ -11,13 +12,13 @@ warning: lint `raw_pointer_derive` has been removed: using derive with raw point
    = note: requested on the command line with `-D raw_pointer_derive`
 
 error: unused variable: `unused`
-  --> $DIR/lint-removed-cmdline.rs:12:17
+  --> $DIR/lint-removed-cmdline.rs:13:17
    |
 LL | fn main() { let unused = (); }
    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_unused`
    |
 note: the lint level is defined here
-  --> $DIR/lint-removed-cmdline.rs:11:8
+  --> $DIR/lint-removed-cmdline.rs:12:8
    |
 LL | #[deny(warnings)]
    |        ^^^^^^^^
diff --git a/tests/ui/lint/lint-renamed-cmdline-deny.rs b/tests/ui/lint/lint-renamed-cmdline-deny.rs
new file mode 100644
index 00000000000..01629aaca80
--- /dev/null
+++ b/tests/ui/lint/lint-renamed-cmdline-deny.rs
@@ -0,0 +1,10 @@
+// compile-flags:-D renamed-and-removed-lints -D bare_trait_object
+
+// error-pattern:lint `bare_trait_object` has been renamed to `bare_trait_objects`
+// error-pattern:use the new name `bare_trait_objects`
+// error-pattern:requested on the command line with `-D bare_trait_object`
+// error-pattern:requested on the command line with `-D renamed-and-removed-lints`
+// error-pattern:unused
+
+#[deny(unused)]
+fn main() { let unused = (); }
diff --git a/tests/ui/lint/lint-renamed-cmdline-deny.stderr b/tests/ui/lint/lint-renamed-cmdline-deny.stderr
new file mode 100644
index 00000000000..df22ef60daf
--- /dev/null
+++ b/tests/ui/lint/lint-renamed-cmdline-deny.stderr
@@ -0,0 +1,31 @@
+error: lint `bare_trait_object` has been renamed to `bare_trait_objects`
+   |
+   = help: use the new name `bare_trait_objects`
+   = note: requested on the command line with `-D bare_trait_object`
+   = note: requested on the command line with `-D renamed-and-removed-lints`
+
+error: lint `bare_trait_object` has been renamed to `bare_trait_objects`
+   |
+   = help: use the new name `bare_trait_objects`
+   = note: requested on the command line with `-D bare_trait_object`
+
+error: lint `bare_trait_object` has been renamed to `bare_trait_objects`
+   |
+   = help: use the new name `bare_trait_objects`
+   = note: requested on the command line with `-D bare_trait_object`
+
+error: unused variable: `unused`
+  --> $DIR/lint-renamed-cmdline-deny.rs:10:17
+   |
+LL | fn main() { let unused = (); }
+   |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_unused`
+   |
+note: the lint level is defined here
+  --> $DIR/lint-renamed-cmdline-deny.rs:9:8
+   |
+LL | #[deny(unused)]
+   |        ^^^^^^
+   = note: `#[deny(unused_variables)]` implied by `#[deny(unused)]`
+
+error: aborting due to 4 previous errors
+
diff --git a/tests/ui/lint/lint-renamed-cmdline.rs b/tests/ui/lint/lint-renamed-cmdline.rs
index c873771e308..fba7c33311d 100644
--- a/tests/ui/lint/lint-renamed-cmdline.rs
+++ b/tests/ui/lint/lint-renamed-cmdline.rs
@@ -2,6 +2,7 @@
 
 // error-pattern:lint `bare_trait_object` has been renamed to `bare_trait_objects`
 // error-pattern:requested on the command line with `-D bare_trait_object`
+// error-pattern:`#[warn(renamed_and_removed_lints)]` on by default
 // error-pattern:unused
 
 #[deny(unused)]
diff --git a/tests/ui/lint/lint-renamed-cmdline.stderr b/tests/ui/lint/lint-renamed-cmdline.stderr
index 8dfd61ac927..a41284003ed 100644
--- a/tests/ui/lint/lint-renamed-cmdline.stderr
+++ b/tests/ui/lint/lint-renamed-cmdline.stderr
@@ -1,23 +1,27 @@
 warning: lint `bare_trait_object` has been renamed to `bare_trait_objects`
    |
+   = help: use the new name `bare_trait_objects`
    = note: requested on the command line with `-D bare_trait_object`
+   = note: `#[warn(renamed_and_removed_lints)]` on by default
 
 warning: lint `bare_trait_object` has been renamed to `bare_trait_objects`
    |
+   = help: use the new name `bare_trait_objects`
    = note: requested on the command line with `-D bare_trait_object`
 
 warning: lint `bare_trait_object` has been renamed to `bare_trait_objects`
    |
+   = help: use the new name `bare_trait_objects`
    = note: requested on the command line with `-D bare_trait_object`
 
 error: unused variable: `unused`
-  --> $DIR/lint-renamed-cmdline.rs:8:17
+  --> $DIR/lint-renamed-cmdline.rs:9:17
    |
 LL | fn main() { let unused = (); }
    |                 ^^^^^^ help: if this is intentional, prefix it with an underscore: `_unused`
    |
 note: the lint level is defined here
-  --> $DIR/lint-renamed-cmdline.rs:7:8
+  --> $DIR/lint-renamed-cmdline.rs:8:8
    |
 LL | #[deny(unused)]
    |        ^^^^^^
diff --git a/tests/ui/lint/lint-unexported-no-mangle.stderr b/tests/ui/lint/lint-unexported-no-mangle.stderr
index a11ee769c7c..85852782222 100644
--- a/tests/ui/lint/lint-unexported-no-mangle.stderr
+++ b/tests/ui/lint/lint-unexported-no-mangle.stderr
@@ -1,6 +1,7 @@
 warning: lint `private_no_mangle_fns` has been removed: no longer a warning, `#[no_mangle]` functions always exported
    |
    = note: requested on the command line with `-F private_no_mangle_fns`
+   = note: `#[warn(renamed_and_removed_lints)]` on by default
 
 warning: lint `private_no_mangle_statics` has been removed: no longer a warning, `#[no_mangle]` statics always exported
    |
diff --git a/tests/ui/lint/lint-unknown-lint-cmdline-allow.rs b/tests/ui/lint/lint-unknown-lint-cmdline-allow.rs
new file mode 100644
index 00000000000..c7f8d434c04
--- /dev/null
+++ b/tests/ui/lint/lint-unknown-lint-cmdline-allow.rs
@@ -0,0 +1,4 @@
+// check-pass
+// compile-flags:-A unknown-lints -D bogus -D dead_cod
+
+fn main() { }
diff --git a/tests/ui/lint/lint-unknown-lint-cmdline-deny.rs b/tests/ui/lint/lint-unknown-lint-cmdline-deny.rs
new file mode 100644
index 00000000000..31bc2047356
--- /dev/null
+++ b/tests/ui/lint/lint-unknown-lint-cmdline-deny.rs
@@ -0,0 +1,9 @@
+// compile-flags:-D unknown-lints -D bogus -D dead_cod
+
+// error-pattern:unknown lint: `bogus`
+// error-pattern:requested on the command line with `-D bogus`
+// error-pattern:requested on the command line with `-D dead_cod`
+// error-pattern:requested on the command line with `-D unknown-lints`
+// error-pattern:did you mean: `dead_code`
+
+fn main() { }
diff --git a/tests/ui/lint/lint-unknown-lint-cmdline-deny.stderr b/tests/ui/lint/lint-unknown-lint-cmdline-deny.stderr
new file mode 100644
index 00000000000..677b5edc894
--- /dev/null
+++ b/tests/ui/lint/lint-unknown-lint-cmdline-deny.stderr
@@ -0,0 +1,31 @@
+error[E0602]: unknown lint: `bogus`
+   |
+   = note: requested on the command line with `-D bogus`
+   = note: requested on the command line with `-D unknown-lints`
+
+error[E0602]: unknown lint: `dead_cod`
+   |
+   = help: did you mean: `dead_code`
+   = note: requested on the command line with `-D dead_cod`
+
+error[E0602]: unknown lint: `bogus`
+   |
+   = note: requested on the command line with `-D bogus`
+
+error[E0602]: unknown lint: `dead_cod`
+   |
+   = help: did you mean: `dead_code`
+   = note: requested on the command line with `-D dead_cod`
+
+error[E0602]: unknown lint: `bogus`
+   |
+   = note: requested on the command line with `-D bogus`
+
+error[E0602]: unknown lint: `dead_cod`
+   |
+   = help: did you mean: `dead_code`
+   = note: requested on the command line with `-D dead_cod`
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0602`.
diff --git a/tests/ui/lint/lint-unknown-lint-cmdline.rs b/tests/ui/lint/lint-unknown-lint-cmdline.rs
index 7f3f55fbad0..81539cb6dc1 100644
--- a/tests/ui/lint/lint-unknown-lint-cmdline.rs
+++ b/tests/ui/lint/lint-unknown-lint-cmdline.rs
@@ -1,7 +1,9 @@
+// check-pass
 // compile-flags:-D bogus -D dead_cod
 
 // error-pattern:unknown lint: `bogus`
 // error-pattern:requested on the command line with `-D bogus`
+// error-pattern:`#[warn(unknown_lints)]` on by default
 // error-pattern:unknown lint: `dead_cod`
 // error-pattern:requested on the command line with `-D dead_cod`
 // error-pattern:did you mean: `dead_code`
diff --git a/tests/ui/lint/lint-unknown-lint-cmdline.stderr b/tests/ui/lint/lint-unknown-lint-cmdline.stderr
index 3855d552792..10db76ac4f1 100644
--- a/tests/ui/lint/lint-unknown-lint-cmdline.stderr
+++ b/tests/ui/lint/lint-unknown-lint-cmdline.stderr
@@ -1,21 +1,31 @@
-error[E0602]: unknown lint: `bogus`
+warning[E0602]: unknown lint: `bogus`
    |
    = note: requested on the command line with `-D bogus`
+   = note: `#[warn(unknown_lints)]` on by default
 
-error[E0602]: unknown lint: `dead_cod`
+warning[E0602]: unknown lint: `dead_cod`
    |
    = help: did you mean: `dead_code`
    = note: requested on the command line with `-D dead_cod`
 
-error[E0602]: unknown lint: `bogus`
+warning[E0602]: unknown lint: `bogus`
    |
    = note: requested on the command line with `-D bogus`
 
-error[E0602]: unknown lint: `dead_cod`
+warning[E0602]: unknown lint: `dead_cod`
    |
    = help: did you mean: `dead_code`
    = note: requested on the command line with `-D dead_cod`
 
-error: aborting due to 4 previous errors
+warning[E0602]: unknown lint: `bogus`
+   |
+   = note: requested on the command line with `-D bogus`
+
+warning[E0602]: unknown lint: `dead_cod`
+   |
+   = help: did you mean: `dead_code`
+   = note: requested on the command line with `-D dead_cod`
+
+warning: 6 warnings emitted
 
 For more information about this error, try `rustc --explain E0602`.
diff --git a/tests/ui/lint/no-coverage.rs b/tests/ui/lint/no-coverage.rs
index 07906a43472..907d25d333e 100644
--- a/tests/ui/lint/no-coverage.rs
+++ b/tests/ui/lint/no-coverage.rs
@@ -1,55 +1,55 @@
 #![feature(extern_types)]
-#![feature(no_coverage)]
+#![feature(coverage_attribute)]
 #![feature(impl_trait_in_assoc_type)]
 #![warn(unused_attributes)]
-#![no_coverage]
-//~^ WARN: `#[no_coverage]` does not propagate into items and must be applied to the contained functions directly
+#![coverage(off)]
+//~^ WARN: `#[coverage]` does not propagate into items and must be applied to the contained functions directly
 
-#[no_coverage]
-//~^ WARN: `#[no_coverage]` does not propagate into items and must be applied to the contained functions directly
+#[coverage(off)]
+//~^ WARN: `#[coverage]` does not propagate into items and must be applied to the contained functions directly
 trait Trait {
-    #[no_coverage] //~ ERROR `#[no_coverage]` must be applied to coverable code
+    #[coverage(off)] //~ ERROR `#[coverage]` must be applied to coverable code
     const X: u32;
 
-    #[no_coverage] //~ ERROR `#[no_coverage]` must be applied to coverable code
+    #[coverage(off)] //~ ERROR `#[coverage]` must be applied to coverable code
     type T;
 
     type U;
 }
 
-#[no_coverage]
-//~^ WARN: `#[no_coverage]` does not propagate into items and must be applied to the contained functions directly
+#[coverage(off)]
+//~^ WARN: `#[coverage]` does not propagate into items and must be applied to the contained functions directly
 impl Trait for () {
     const X: u32 = 0;
 
-    #[no_coverage] //~ ERROR `#[no_coverage]` must be applied to coverable code
+    #[coverage(off)] //~ ERROR `#[coverage]` must be applied to coverable code
     type T = Self;
 
-    #[no_coverage] //~ ERROR `#[no_coverage]` must be applied to coverable code
+    #[coverage(off)] //~ ERROR `#[coverage]` must be applied to coverable code
     type U = impl Trait; //~ ERROR unconstrained opaque type
 }
 
 extern "C" {
-    #[no_coverage] //~ ERROR `#[no_coverage]` must be applied to coverable code
+    #[coverage(off)] //~ ERROR `#[coverage]` must be applied to coverable code
     static X: u32;
 
-    #[no_coverage] //~ ERROR `#[no_coverage]` must be applied to coverable code
+    #[coverage(off)] //~ ERROR `#[coverage]` must be applied to coverable code
     type T;
 }
 
-#[no_coverage]
+#[coverage(off)]
 fn main() {
-    #[no_coverage]
-    //~^ WARN `#[no_coverage]` may only be applied to function definitions
+    #[coverage(off)]
+    //~^ WARN `#[coverage]` may only be applied to function definitions
     let _ = ();
 
     match () {
-        #[no_coverage]
-        //~^ WARN `#[no_coverage]` may only be applied to function definitions
+        #[coverage(off)]
+        //~^ WARN `#[coverage]` may only be applied to function definitions
         () => (),
     }
 
-    #[no_coverage]
-    //~^ WARN `#[no_coverage]` may only be applied to function definitions
+    #[coverage(off)]
+    //~^ WARN `#[coverage]` may only be applied to function definitions
     return ();
 }
diff --git a/tests/ui/lint/no-coverage.stderr b/tests/ui/lint/no-coverage.stderr
index 404efbeac1e..a87b0fb49f0 100644
--- a/tests/ui/lint/no-coverage.stderr
+++ b/tests/ui/lint/no-coverage.stderr
@@ -1,8 +1,8 @@
-warning: `#[no_coverage]` does not propagate into items and must be applied to the contained functions directly
+warning: `#[coverage]` does not propagate into items and must be applied to the contained functions directly
   --> $DIR/no-coverage.rs:8:1
    |
-LL | #[no_coverage]
-   | ^^^^^^^^^^^^^^
+LL | #[coverage(off)]
+   | ^^^^^^^^^^^^^^^^
    |
 note: the lint level is defined here
   --> $DIR/no-coverage.rs:4:9
@@ -10,83 +10,83 @@ note: the lint level is defined here
 LL | #![warn(unused_attributes)]
    |         ^^^^^^^^^^^^^^^^^
 
-warning: `#[no_coverage]` does not propagate into items and must be applied to the contained functions directly
+warning: `#[coverage]` does not propagate into items and must be applied to the contained functions directly
   --> $DIR/no-coverage.rs:20:1
    |
-LL | #[no_coverage]
-   | ^^^^^^^^^^^^^^
+LL | #[coverage(off)]
+   | ^^^^^^^^^^^^^^^^
 
-warning: `#[no_coverage]` may only be applied to function definitions
+warning: `#[coverage]` may only be applied to function definitions
   --> $DIR/no-coverage.rs:42:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 
-warning: `#[no_coverage]` may only be applied to function definitions
+warning: `#[coverage]` may only be applied to function definitions
   --> $DIR/no-coverage.rs:47:9
    |
-LL |         #[no_coverage]
-   |         ^^^^^^^^^^^^^^
+LL |         #[coverage(off)]
+   |         ^^^^^^^^^^^^^^^^
 
-warning: `#[no_coverage]` may only be applied to function definitions
+warning: `#[coverage]` may only be applied to function definitions
   --> $DIR/no-coverage.rs:52:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 
-error[E0788]: `#[no_coverage]` must be applied to coverable code
+error[E0788]: `#[coverage]` must be applied to coverable code
   --> $DIR/no-coverage.rs:11:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 LL |     const X: u32;
    |     ------------- not coverable code
 
-error[E0788]: `#[no_coverage]` must be applied to coverable code
+error[E0788]: `#[coverage]` must be applied to coverable code
   --> $DIR/no-coverage.rs:14:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 LL |     type T;
    |     ------- not coverable code
 
-error[E0788]: `#[no_coverage]` must be applied to coverable code
+error[E0788]: `#[coverage]` must be applied to coverable code
   --> $DIR/no-coverage.rs:25:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 LL |     type T = Self;
    |     -------------- not coverable code
 
-error[E0788]: `#[no_coverage]` must be applied to coverable code
+error[E0788]: `#[coverage]` must be applied to coverable code
   --> $DIR/no-coverage.rs:28:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 LL |     type U = impl Trait;
    |     -------------------- not coverable code
 
-error[E0788]: `#[no_coverage]` must be applied to coverable code
+error[E0788]: `#[coverage]` must be applied to coverable code
   --> $DIR/no-coverage.rs:33:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 LL |     static X: u32;
    |     -------------- not coverable code
 
-error[E0788]: `#[no_coverage]` must be applied to coverable code
+error[E0788]: `#[coverage]` must be applied to coverable code
   --> $DIR/no-coverage.rs:36:5
    |
-LL |     #[no_coverage]
-   |     ^^^^^^^^^^^^^^
+LL |     #[coverage(off)]
+   |     ^^^^^^^^^^^^^^^^
 LL |     type T;
    |     ------- not coverable code
 
-warning: `#[no_coverage]` does not propagate into items and must be applied to the contained functions directly
+warning: `#[coverage]` does not propagate into items and must be applied to the contained functions directly
   --> $DIR/no-coverage.rs:5:1
    |
-LL | #![no_coverage]
-   | ^^^^^^^^^^^^^^^
+LL | #![coverage(off)]
+   | ^^^^^^^^^^^^^^^^^
 
 error: unconstrained opaque type
   --> $DIR/no-coverage.rs:29:14
diff --git a/tests/ui/lint/ptr_null_checks.rs b/tests/ui/lint/ptr_null_checks.rs
index e677ea3094d..3028084e962 100644
--- a/tests/ui/lint/ptr_null_checks.rs
+++ b/tests/ui/lint/ptr_null_checks.rs
@@ -38,15 +38,15 @@ fn main() {
     if (&mut 8 as *mut i32).is_null() {}
     //~^ WARN references are not nullable
     if ptr::from_mut(&mut 8).is_null() {}
-    //~^ WARN references are not nullable
+    //~^ WARN call is never null
     if (&8 as *const i32).is_null() {}
     //~^ WARN references are not nullable
     if ptr::from_ref(&8).is_null() {}
-    //~^ WARN references are not nullable
+    //~^ WARN call is never null
     if ptr::from_ref(&8).cast_mut().is_null() {}
-    //~^ WARN references are not nullable
+    //~^ WARN call is never null
     if (ptr::from_ref(&8).cast_mut() as *mut i32).is_null() {}
-    //~^ WARN references are not nullable
+    //~^ WARN call is never null
     if (&8 as *const i32) == std::ptr::null() {}
     //~^ WARN references are not nullable
     let ref_num = &8;
@@ -65,6 +65,12 @@ fn main() {
     if (&*{ static_i32() } as *const i32).is_null() {}
     //~^ WARN references are not nullable
 
+    // ---------------- Functions -------------------
+    if ptr::NonNull::new(&mut 8).unwrap().as_ptr().is_null() {}
+    //~^ WARN call is never null
+    if ptr::NonNull::<u8>::dangling().as_ptr().is_null() {}
+    //~^ WARN call is never null
+
     // ----------------------------------------------
     const ZPTR: *const () = 0 as *const _;
     const NOT_ZPTR: *const () = 1 as *const _;
diff --git a/tests/ui/lint/ptr_null_checks.stderr b/tests/ui/lint/ptr_null_checks.stderr
index 3cee1804b62..0edc1b86536 100644
--- a/tests/ui/lint/ptr_null_checks.stderr
+++ b/tests/ui/lint/ptr_null_checks.stderr
@@ -117,13 +117,11 @@ LL |     if (&mut 8 as *mut i32).is_null() {}
    |         |
    |         expression has type `&mut i32`
 
-warning: references are not nullable, so checking them for null will always return false
+warning: returned pointer of `from_mut` call is never null, so checking it for null will always return false
   --> $DIR/ptr_null_checks.rs:40:8
    |
 LL |     if ptr::from_mut(&mut 8).is_null() {}
-   |        ^^^^^^^^^^^^^^------^^^^^^^^^^^
-   |                      |
-   |                      expression has type `&mut i32`
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 warning: references are not nullable, so checking them for null will always return false
   --> $DIR/ptr_null_checks.rs:42:8
@@ -133,29 +131,23 @@ LL |     if (&8 as *const i32).is_null() {}
    |         |
    |         expression has type `&i32`
 
-warning: references are not nullable, so checking them for null will always return false
+warning: returned pointer of `from_ref` call is never null, so checking it for null will always return false
   --> $DIR/ptr_null_checks.rs:44:8
    |
 LL |     if ptr::from_ref(&8).is_null() {}
-   |        ^^^^^^^^^^^^^^--^^^^^^^^^^^
-   |                      |
-   |                      expression has type `&i32`
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-warning: references are not nullable, so checking them for null will always return false
+warning: returned pointer of `from_ref` call is never null, so checking it for null will always return false
   --> $DIR/ptr_null_checks.rs:46:8
    |
 LL |     if ptr::from_ref(&8).cast_mut().is_null() {}
-   |        ^^^^^^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^^
-   |                      |
-   |                      expression has type `&i32`
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-warning: references are not nullable, so checking them for null will always return false
+warning: returned pointer of `from_ref` call is never null, so checking it for null will always return false
   --> $DIR/ptr_null_checks.rs:48:8
    |
 LL |     if (ptr::from_ref(&8).cast_mut() as *mut i32).is_null() {}
-   |        ^^^^^^^^^^^^^^^--^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |                       |
-   |                       expression has type `&i32`
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 warning: references are not nullable, so checking them for null will always return false
   --> $DIR/ptr_null_checks.rs:50:8
@@ -221,5 +213,17 @@ LL |     if (&*{ static_i32() } as *const i32).is_null() {}
    |         |
    |         expression has type `&i32`
 
-warning: 25 warnings emitted
+warning: returned pointer of `as_ptr` call is never null, so checking it for null will always return false
+  --> $DIR/ptr_null_checks.rs:69:8
+   |
+LL |     if ptr::NonNull::new(&mut 8).unwrap().as_ptr().is_null() {}
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+warning: returned pointer of `as_ptr` call is never null, so checking it for null will always return false
+  --> $DIR/ptr_null_checks.rs:71:8
+   |
+LL |     if ptr::NonNull::<u8>::dangling().as_ptr().is_null() {}
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+warning: 27 warnings emitted
 
diff --git a/tests/ui/lint/reference_casting.rs b/tests/ui/lint/reference_casting.rs
index 92d985948ec..7745d4ef4c3 100644
--- a/tests/ui/lint/reference_casting.rs
+++ b/tests/ui/lint/reference_casting.rs
@@ -36,6 +36,10 @@ unsafe fn ref_to_mut() {
     //~^ ERROR casting `&T` to `&mut T` is undefined behavior
     let _num = &mut *std::mem::transmute::<_, *mut i32>(num);
     //~^ ERROR casting `&T` to `&mut T` is undefined behavior
+    let _num = &mut *std::cell::UnsafeCell::raw_get(
+    //~^ ERROR casting `&T` to `&mut T` is undefined behavior
+        num as *const i32 as *const std::cell::UnsafeCell<i32>
+    );
 
     let deferred = num as *const i32 as *mut i32;
     let _num = &mut *deferred;
@@ -50,6 +54,16 @@ unsafe fn ref_to_mut() {
         &mut *((this as *const _) as *mut _)
         //~^ ERROR casting `&T` to `&mut T` is undefined behavior
     }
+
+    fn as_mut<T>(x: &T) -> &mut T {
+        unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+        //~^ ERROR casting `&T` to `&mut T` is undefined behavior
+    }
+
+    fn as_mut_i32(x: &i32) -> &mut i32 {
+        unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+        //~^ ERROR casting `&T` to `&mut T` is undefined behavior
+    }
 }
 
 unsafe fn assign_to_ref() {
@@ -111,6 +125,20 @@ unsafe fn no_warn() {
     let mut value = 3;
     let value: *const i32 = &mut value;
     *(value as *const i16 as *mut i16) = 42;
+
+    fn safe_as_mut<T>(x: &std::cell::UnsafeCell<T>) -> &mut T {
+        unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+    }
+
+    fn cell_as_mut(x: &std::cell::Cell<i32>) -> &mut i32 {
+        unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+    }
+
+    #[repr(transparent)]
+    struct DoesContainUnsafeCell(std::cell::UnsafeCell<i32>);
+    fn safe_as_mut2(x: &DoesContainUnsafeCell) -> &mut DoesContainUnsafeCell {
+        unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+    }
 }
 
 fn main() {}
diff --git a/tests/ui/lint/reference_casting.stderr b/tests/ui/lint/reference_casting.stderr
index 47b95460ec3..1189942c809 100644
--- a/tests/ui/lint/reference_casting.stderr
+++ b/tests/ui/lint/reference_casting.stderr
@@ -80,7 +80,19 @@ LL |     let _num = &mut *std::mem::transmute::<_, *mut i32>(num);
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:41:16
+  --> $DIR/reference_casting.rs:39:16
+   |
+LL |       let _num = &mut *std::cell::UnsafeCell::raw_get(
+   |  ________________^
+LL | |
+LL | |         num as *const i32 as *const std::cell::UnsafeCell<i32>
+LL | |     );
+   | |_____^
+   |
+   = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
+
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:45:16
    |
 LL |     let deferred = num as *const i32 as *mut i32;
    |                    ----------------------------- casting happend here
@@ -90,7 +102,7 @@ LL |     let _num = &mut *deferred;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:44:16
+  --> $DIR/reference_casting.rs:48:16
    |
 LL |     let deferred = (std::ptr::from_ref(num) as *const i32 as *const i32).cast_mut() as *mut i32;
    |                    ---------------------------------------------------------------------------- casting happend here
@@ -100,7 +112,7 @@ LL |     let _num = &mut *deferred;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:46:16
+  --> $DIR/reference_casting.rs:50:16
    |
 LL |     let _num = &mut *(num as *const _ as usize as *mut i32);
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -108,15 +120,31 @@ LL |     let _num = &mut *(num as *const _ as usize as *mut i32);
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:50:9
+  --> $DIR/reference_casting.rs:54:9
    |
 LL |         &mut *((this as *const _) as *mut _)
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:59:18
+   |
+LL |         unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
+
+error: casting `&T` to `&mut T` is undefined behavior, even if the reference is unused, consider instead using an `UnsafeCell`
+  --> $DIR/reference_casting.rs:64:18
+   |
+LL |         unsafe { &mut *std::cell::UnsafeCell::raw_get(x as *const _ as *const _) }
+   |                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
+
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:60:5
+  --> $DIR/reference_casting.rs:74:5
    |
 LL |     *(a as *const _ as *mut _) = String::from("Replaced");
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -124,7 +152,7 @@ LL |     *(a as *const _ as *mut _) = String::from("Replaced");
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:62:5
+  --> $DIR/reference_casting.rs:76:5
    |
 LL |     *(a as *const _ as *mut String) += " world";
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -132,7 +160,7 @@ LL |     *(a as *const _ as *mut String) += " world";
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:64:5
+  --> $DIR/reference_casting.rs:78:5
    |
 LL |     *std::ptr::from_ref(num).cast_mut() += 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -140,7 +168,7 @@ LL |     *std::ptr::from_ref(num).cast_mut() += 1;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:66:5
+  --> $DIR/reference_casting.rs:80:5
    |
 LL |     *std::ptr::from_ref({ num }).cast_mut() += 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -148,7 +176,7 @@ LL |     *std::ptr::from_ref({ num }).cast_mut() += 1;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:68:5
+  --> $DIR/reference_casting.rs:82:5
    |
 LL |     *{ std::ptr::from_ref(num) }.cast_mut() += 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -156,7 +184,7 @@ LL |     *{ std::ptr::from_ref(num) }.cast_mut() += 1;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:70:5
+  --> $DIR/reference_casting.rs:84:5
    |
 LL |     *(std::ptr::from_ref({ num }) as *mut i32) += 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -164,7 +192,7 @@ LL |     *(std::ptr::from_ref({ num }) as *mut i32) += 1;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:72:5
+  --> $DIR/reference_casting.rs:86:5
    |
 LL |     *std::mem::transmute::<_, *mut i32>(num) += 1;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -172,7 +200,7 @@ LL |     *std::mem::transmute::<_, *mut i32>(num) += 1;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:74:5
+  --> $DIR/reference_casting.rs:88:5
    |
 LL | /     std::ptr::write(
 LL | |
@@ -184,7 +212,7 @@ LL | |     );
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:81:5
+  --> $DIR/reference_casting.rs:95:5
    |
 LL |     let value = num as *const i32 as *mut i32;
    |                 ----------------------------- casting happend here
@@ -194,7 +222,7 @@ LL |     *value = 1;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:83:5
+  --> $DIR/reference_casting.rs:97:5
    |
 LL |     *(num as *const i32).cast::<i32>().cast_mut() = 2;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -202,7 +230,7 @@ LL |     *(num as *const i32).cast::<i32>().cast_mut() = 2;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:85:5
+  --> $DIR/reference_casting.rs:99:5
    |
 LL |     *(num as *const _ as usize as *mut i32) = 2;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -210,7 +238,7 @@ LL |     *(num as *const _ as usize as *mut i32) = 2;
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:87:5
+  --> $DIR/reference_casting.rs:101:5
    |
 LL |     let value = num as *const i32 as *mut i32;
    |                 ----------------------------- casting happend here
@@ -221,7 +249,7 @@ LL |     std::ptr::write(value, 2);
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:89:5
+  --> $DIR/reference_casting.rs:103:5
    |
 LL |     let value = num as *const i32 as *mut i32;
    |                 ----------------------------- casting happend here
@@ -232,7 +260,7 @@ LL |     std::ptr::write_unaligned(value, 2);
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:91:5
+  --> $DIR/reference_casting.rs:105:5
    |
 LL |     let value = num as *const i32 as *mut i32;
    |                 ----------------------------- casting happend here
@@ -243,12 +271,12 @@ LL |     std::ptr::write_volatile(value, 2);
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
 error: assigning to `&T` is undefined behavior, consider using an `UnsafeCell`
-  --> $DIR/reference_casting.rs:95:9
+  --> $DIR/reference_casting.rs:109:9
    |
 LL |         *(this as *const _ as *mut _) = a;
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: for more information, visit <https://doc.rust-lang.org/book/ch15-05-interior-mutability.html>
 
-error: aborting due to 29 previous errors
+error: aborting due to 32 previous errors
 
diff --git a/tests/ui/lint/unused/unused-doc-comments-edge-cases.rs b/tests/ui/lint/unused/unused-doc-comments-edge-cases.rs
index 54d86c31fb4..ba32fb566e8 100644
--- a/tests/ui/lint/unused/unused-doc-comments-edge-cases.rs
+++ b/tests/ui/lint/unused/unused-doc-comments-edge-cases.rs
@@ -26,6 +26,32 @@ fn doc_comment_on_expr(num: u8) -> bool {
     num == 3
 }
 
+fn doc_comment_on_expr_field() -> bool {
+    struct S { foo: i32 }
+
+    let x = S {
+        /// useless doc comment
+        //~^ ERROR: unused doc comment
+        foo: 3
+    };
+
+    true
+}
+
+fn doc_comment_on_pat_field() -> bool {
+    struct S { foo: i32 }
+
+    let S {
+        /// useless doc comment
+        //~^ ERROR: unused doc comment
+        foo
+    } = S {
+        foo: 3
+    };
+
+    true
+}
+
 fn doc_comment_on_generic<#[doc = "x"] T>(val: T) {}
 //~^ ERROR: unused doc comment
 
diff --git a/tests/ui/lint/unused/unused-doc-comments-edge-cases.stderr b/tests/ui/lint/unused/unused-doc-comments-edge-cases.stderr
index 078b780d8b9..b5aa6215797 100644
--- a/tests/ui/lint/unused/unused-doc-comments-edge-cases.stderr
+++ b/tests/ui/lint/unused/unused-doc-comments-edge-cases.stderr
@@ -42,7 +42,29 @@ LL |     num == 3
    = help: use `//` for a plain comment
 
 error: unused doc comment
-  --> $DIR/unused-doc-comments-edge-cases.rs:29:27
+  --> $DIR/unused-doc-comments-edge-cases.rs:33:9
+   |
+LL |         /// useless doc comment
+   |         ^^^^^^^^^^^^^^^^^^^^^^^
+LL |
+LL |         foo: 3
+   |         ------ rustdoc does not generate documentation for expression fields
+   |
+   = help: use `//` for a plain comment
+
+error: unused doc comment
+  --> $DIR/unused-doc-comments-edge-cases.rs:45:9
+   |
+LL |         /// useless doc comment
+   |         ^^^^^^^^^^^^^^^^^^^^^^^
+LL |
+LL |         foo
+   |         --- rustdoc does not generate documentation for pattern fields
+   |
+   = help: use `//` for a plain comment
+
+error: unused doc comment
+  --> $DIR/unused-doc-comments-edge-cases.rs:55:27
    |
 LL | fn doc_comment_on_generic<#[doc = "x"] T>(val: T) {}
    |                           ^^^^^^^^^^^^ - rustdoc does not generate documentation for generic parameters
@@ -50,7 +72,7 @@ LL | fn doc_comment_on_generic<#[doc = "x"] T>(val: T) {}
    = help: use `//` for a plain comment
 
 error: unused doc comment
-  --> $DIR/unused-doc-comments-edge-cases.rs:33:5
+  --> $DIR/unused-doc-comments-edge-cases.rs:59:5
    |
 LL |       /// unused doc comment
    |       ^^^^^^^^^^^^^^^^^^^^^^
@@ -63,7 +85,7 @@ LL | |     }
    = help: use `//` for a plain comment
 
 error: unused doc comment
-  --> $DIR/unused-doc-comments-edge-cases.rs:40:1
+  --> $DIR/unused-doc-comments-edge-cases.rs:66:1
    |
 LL |   /// unused doc comment
    |   ^^^^^^^^^^^^^^^^^^^^^^
@@ -89,7 +111,7 @@ help: you might have meant to return this value
 LL |         return true;
    |         ++++++     +
 
-error: aborting due to 8 previous errors
+error: aborting due to 10 previous errors
 
 Some errors have detailed explanations: E0308, E0658.
 For more information about an error, try `rustc --explain E0308`.
diff --git a/tests/ui/lint/unused/unused-parens-issue-106413.rs b/tests/ui/lint/unused/unused-parens-issue-106413.rs
new file mode 100644
index 00000000000..7e76ab073b4
--- /dev/null
+++ b/tests/ui/lint/unused/unused-parens-issue-106413.rs
@@ -0,0 +1,32 @@
+// check-pass
+#![warn(unused_parens)]
+
+fn id<T>(t: T) -> T { t }
+
+fn main() {
+    // This should not warn
+    let _ = 1 as (i32) < 2;
+    let _ = id(1 as (i32) < 2);
+    let _ = id(1 as i32)
+        as (i32) < 2;
+    // These should warn
+    let _ = 1 as ((i32)) < 2; //~WARN unnecessary parentheses
+    let _ = 1 as (i32); //~WARN unnecessary parentheses
+    let _ = 1 as (i32) > 2; //~WARN unnecessary parentheses
+    let _ = id(1 as (i32)) //~WARN unnecessary parentheses
+        as (i32) < 2;
+    let _ = id(1 as (i32)) < 2; //~WARN unnecessary parentheses
+
+    // This should not warn
+    let _ = 1 as (i32) << 2;
+    let _ = id(1 as (i32) << 2);
+    let _ = id(1 as i32)
+        as (i32) << 2;
+    // These should warn
+    let _ = 1 as ((i32)) << 2; //~WARN unnecessary parentheses
+    let _ = 1 as (i32); //~WARN unnecessary parentheses
+    let _ = 1 as (i32) >> 2; //~WARN unnecessary parentheses
+    let _ = id(1 as (i32)) //~WARN unnecessary parentheses
+        as (i32) << 2;
+    let _ = id(1 as (i32)) << 2; //~WARN unnecessary parentheses
+}
diff --git a/tests/ui/lint/unused/unused-parens-issue-106413.stderr b/tests/ui/lint/unused/unused-parens-issue-106413.stderr
new file mode 100644
index 00000000000..d2d8f76d967
--- /dev/null
+++ b/tests/ui/lint/unused/unused-parens-issue-106413.stderr
@@ -0,0 +1,127 @@
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:13:19
+   |
+LL |     let _ = 1 as ((i32)) < 2;
+   |                   ^   ^
+   |
+note: the lint level is defined here
+  --> $DIR/unused-parens-issue-106413.rs:2:9
+   |
+LL | #![warn(unused_parens)]
+   |         ^^^^^^^^^^^^^
+help: remove these parentheses
+   |
+LL -     let _ = 1 as ((i32)) < 2;
+LL +     let _ = 1 as (i32) < 2;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:14:18
+   |
+LL |     let _ = 1 as (i32);
+   |                  ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = 1 as (i32);
+LL +     let _ = 1 as i32;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:15:18
+   |
+LL |     let _ = 1 as (i32) > 2;
+   |                  ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = 1 as (i32) > 2;
+LL +     let _ = 1 as i32 > 2;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:16:21
+   |
+LL |     let _ = id(1 as (i32))
+   |                     ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = id(1 as (i32))
+LL +     let _ = id(1 as i32)
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:18:21
+   |
+LL |     let _ = id(1 as (i32)) < 2;
+   |                     ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = id(1 as (i32)) < 2;
+LL +     let _ = id(1 as i32) < 2;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:26:19
+   |
+LL |     let _ = 1 as ((i32)) << 2;
+   |                   ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = 1 as ((i32)) << 2;
+LL +     let _ = 1 as (i32) << 2;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:27:18
+   |
+LL |     let _ = 1 as (i32);
+   |                  ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = 1 as (i32);
+LL +     let _ = 1 as i32;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:28:18
+   |
+LL |     let _ = 1 as (i32) >> 2;
+   |                  ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = 1 as (i32) >> 2;
+LL +     let _ = 1 as i32 >> 2;
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:29:21
+   |
+LL |     let _ = id(1 as (i32))
+   |                     ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = id(1 as (i32))
+LL +     let _ = id(1 as i32)
+   |
+
+warning: unnecessary parentheses around type
+  --> $DIR/unused-parens-issue-106413.rs:31:21
+   |
+LL |     let _ = id(1 as (i32)) << 2;
+   |                     ^   ^
+   |
+help: remove these parentheses
+   |
+LL -     let _ = id(1 as (i32)) << 2;
+LL +     let _ = id(1 as i32) << 2;
+   |
+
+warning: 10 warnings emitted
+
diff --git a/tests/ui/issues/issue-69225-SCEVAddExpr-wrap-flag.rs b/tests/ui/loops/issue-69225-SCEVAddExpr-wrap-flag.rs
index 6e030f1cc48..6e030f1cc48 100644
--- a/tests/ui/issues/issue-69225-SCEVAddExpr-wrap-flag.rs
+++ b/tests/ui/loops/issue-69225-SCEVAddExpr-wrap-flag.rs
diff --git a/tests/ui/issues/issue-69225-layout-repeated-checked-add.rs b/tests/ui/loops/issue-69225-layout-repeated-checked-add.rs
index 7f43e4d1a51..7f43e4d1a51 100644
--- a/tests/ui/issues/issue-69225-layout-repeated-checked-add.rs
+++ b/tests/ui/loops/issue-69225-layout-repeated-checked-add.rs
diff --git a/tests/ui/issues/issue-39467.rs b/tests/ui/macros/issue-39467.rs
index 397751e4ec3..397751e4ec3 100644
--- a/tests/ui/issues/issue-39467.rs
+++ b/tests/ui/macros/issue-39467.rs
diff --git a/tests/ui/macros/must-use-in-macro-55516.stderr b/tests/ui/macros/must-use-in-macro-55516.stderr
index 8878b0eea0f..7bf4aaab51c 100644
--- a/tests/ui/macros/must-use-in-macro-55516.stderr
+++ b/tests/ui/macros/must-use-in-macro-55516.stderr
@@ -6,6 +6,7 @@ LL |     write!(&mut example, "{}", 42);
    |
    = note: this `Result` may be an `Err` variant, which should be handled
    = note: `-W unused-must-use` implied by `-W unused`
+   = help: to override `-W unused` add `#[allow(unused_must_use)]`
    = note: this warning originates in the macro `write` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 warning: 1 warning emitted
diff --git a/tests/ui/match/match_non_exhaustive.stderr b/tests/ui/match/match_non_exhaustive.stderr
index 46ee8d5179e..7b8bdfe0053 100644
--- a/tests/ui/match/match_non_exhaustive.stderr
+++ b/tests/ui/match/match_non_exhaustive.stderr
@@ -45,7 +45,8 @@ note: `E2` defined here
    |
 LL | pub enum E2 { A, B }
    | ^^^^^^^^^^^
-   = note: the matched value is of type `E2`, which is marked as non-exhaustive
+   = note: the matched value is of type `E2`
+   = note: `E2` is marked as non-exhaustive, so a wildcard `_` is necessary to match exhaustively
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
 LL |     match e2 { E2::A => (), E2::B => (), _ => todo!() };
diff --git a/tests/ui/issues/issue-3707.rs b/tests/ui/methods/issue-3707.rs
index 0817c51ee4e..0817c51ee4e 100644
--- a/tests/ui/issues/issue-3707.rs
+++ b/tests/ui/methods/issue-3707.rs
diff --git a/tests/ui/issues/issue-3707.stderr b/tests/ui/methods/issue-3707.stderr
index 07c8101cbc6..07c8101cbc6 100644
--- a/tests/ui/issues/issue-3707.stderr
+++ b/tests/ui/methods/issue-3707.stderr
diff --git a/tests/ui/mir/issue-92893.rs b/tests/ui/mir/issue-92893.rs
index 635050f376c..6127d267ebc 100644
--- a/tests/ui/mir/issue-92893.rs
+++ b/tests/ui/mir/issue-92893.rs
@@ -1,7 +1,5 @@
 struct Bug<A = [(); (let a = (), 1).1]> {
-    //~^ `let` expressions are not supported here
-    //~| `let` expressions in this position are unstable [E0658]
-    //~| expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     a: A
 }
 
diff --git a/tests/ui/mir/issue-92893.stderr b/tests/ui/mir/issue-92893.stderr
index 4a0fcce31d7..6c1a9dc0317 100644
--- a/tests/ui/mir/issue-92893.stderr
+++ b/tests/ui/mir/issue-92893.stderr
@@ -3,24 +3,8 @@ error: expected expression, found `let` statement
    |
 LL | struct Bug<A = [(); (let a = (), 1).1]> {
    |                      ^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/issue-92893.rs:1:22
-   |
-LL | struct Bug<A = [(); (let a = (), 1).1]> {
-   |                      ^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/issue-92893.rs:1:22
-   |
-LL | struct Bug<A = [(); (let a = (), 1).1]> {
-   |                      ^^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error: aborting due to 3 previous errors
+error: aborting due to previous error
 
-For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/mir/mir-inlining/always-encode-mirs.rs b/tests/ui/mir/mir-inlining/always-encode-mirs.rs
new file mode 100644
index 00000000000..f3731996cf2
--- /dev/null
+++ b/tests/ui/mir/mir-inlining/always-encode-mirs.rs
@@ -0,0 +1,12 @@
+// Regression test for MIR inlining with -Zalways-encode-mir enabled in the auxiliary crate.
+// Previously we inlined function not eligible for inlining which lead to linking error:
+// undefined reference to `internal::S'
+//
+// aux-build:internal.rs
+// build-pass
+// compile-flags: -O
+extern crate internal;
+
+fn main() {
+    println!("{}", internal::f());
+}
diff --git a/tests/ui/mir/mir-inlining/auxiliary/internal.rs b/tests/ui/mir/mir-inlining/auxiliary/internal.rs
new file mode 100644
index 00000000000..fa0f9c2da41
--- /dev/null
+++ b/tests/ui/mir/mir-inlining/auxiliary/internal.rs
@@ -0,0 +1,7 @@
+// compile-flags: -Zalways-encode-mir
+
+static S: usize = 42;
+
+pub fn f() -> &'static usize {
+    &S
+}
diff --git a/tests/ui/mismatched_types/cast-rfc0401.stderr b/tests/ui/mismatched_types/cast-rfc0401.stderr
index 6b9ac3c5852..0cea60746bf 100644
--- a/tests/ui/mismatched_types/cast-rfc0401.stderr
+++ b/tests/ui/mismatched_types/cast-rfc0401.stderr
@@ -82,13 +82,13 @@ error[E0606]: casting `f32` as `*const u8` is invalid
 LL |     let _ = f as *const u8;
    |             ^^^^^^^^^^^^^^
 
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `i32` as `bool`
   --> $DIR/cast-rfc0401.rs:39:13
    |
 LL |     let _ = 3_i32 as bool;
    |             ^^^^^^^^^^^^^ help: compare with zero instead: `3_i32 != 0`
 
-error[E0054]: cannot cast as `bool`
+error[E0054]: cannot cast `E` as `bool`
   --> $DIR/cast-rfc0401.rs:40:13
    |
 LL |     let _ = E::A as bool;
diff --git a/tests/ui/issues/issue-13033.rs b/tests/ui/mismatched_types/issue-13033.rs
index fdb356e70c5..fdb356e70c5 100644
--- a/tests/ui/issues/issue-13033.rs
+++ b/tests/ui/mismatched_types/issue-13033.rs
diff --git a/tests/ui/issues/issue-13033.stderr b/tests/ui/mismatched_types/issue-13033.stderr
index db2c1189e1e..db2c1189e1e 100644
--- a/tests/ui/issues/issue-13033.stderr
+++ b/tests/ui/mismatched_types/issue-13033.stderr
diff --git a/tests/ui/mismatched_types/normalize-fn-sig.stderr b/tests/ui/mismatched_types/normalize-fn-sig.stderr
index e3a0646550c..252e56387ba 100644
--- a/tests/ui/mismatched_types/normalize-fn-sig.stderr
+++ b/tests/ui/mismatched_types/normalize-fn-sig.stderr
@@ -8,7 +8,6 @@ LL |     needs_i32_ref_fn(foo::<()>);
    |
    = note: expected fn pointer `fn(&'static i32, i32)`
                  found fn item `fn(i32, &'static i32) {foo::<()>}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 note: function defined here
   --> $DIR/normalize-fn-sig.rs:11:4
    |
diff --git a/tests/ui/issues/issue-34721.fixed b/tests/ui/moves/issue-34721.fixed
index f135ad3836e..f135ad3836e 100644
--- a/tests/ui/issues/issue-34721.fixed
+++ b/tests/ui/moves/issue-34721.fixed
diff --git a/tests/ui/issues/issue-34721.rs b/tests/ui/moves/issue-34721.rs
index 14dd01766aa..14dd01766aa 100644
--- a/tests/ui/issues/issue-34721.rs
+++ b/tests/ui/moves/issue-34721.rs
diff --git a/tests/ui/issues/issue-34721.stderr b/tests/ui/moves/issue-34721.stderr
index f2bf22227db..f2bf22227db 100644
--- a/tests/ui/issues/issue-34721.stderr
+++ b/tests/ui/moves/issue-34721.stderr
diff --git a/tests/ui/namespace/namespace-mix.stderr b/tests/ui/namespace/namespace-mix.stderr
index 3ac5e96c574..4eff08ead42 100644
--- a/tests/ui/namespace/namespace-mix.stderr
+++ b/tests/ui/namespace/namespace-mix.stderr
@@ -114,6 +114,11 @@ LL |     check(m1::S{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -128,6 +133,11 @@ LL |     check(m2::S{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -142,6 +152,11 @@ LL |     check(m2::S);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -156,6 +171,11 @@ LL |     check(xm1::S{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -170,6 +190,11 @@ LL |     check(xm2::S{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -184,6 +209,11 @@ LL |     check(xm2::S);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -198,6 +228,11 @@ LL |     check(m3::TS{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -212,6 +247,11 @@ LL |     check(m3::TS);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -226,6 +266,11 @@ LL |     check(m4::TS{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -240,6 +285,11 @@ LL |     check(m4::TS);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -254,6 +304,11 @@ LL |     check(xm3::TS{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -268,6 +323,11 @@ LL |     check(xm3::TS);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -282,6 +342,11 @@ LL |     check(xm4::TS{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -296,6 +361,11 @@ LL |     check(xm4::TS);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -310,6 +380,11 @@ LL |     check(m5::US{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -324,6 +399,11 @@ LL |     check(m5::US);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -338,6 +418,11 @@ LL |     check(m6::US{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -352,6 +437,11 @@ LL |     check(m6::US);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -366,6 +456,11 @@ LL |     check(xm5::US{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -380,6 +475,11 @@ LL |     check(xm5::US);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -394,6 +494,11 @@ LL |     check(xm6::US{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -408,6 +513,11 @@ LL |     check(xm6::US);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -422,6 +532,11 @@ LL |     check(m7::V{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -436,6 +551,11 @@ LL |     check(m8::V{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -450,6 +570,11 @@ LL |     check(m8::V);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -464,6 +589,11 @@ LL |     check(xm7::V{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -478,6 +608,11 @@ LL |     check(xm8::V{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -492,6 +627,11 @@ LL |     check(xm8::V);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -506,6 +646,11 @@ LL |     check(m9::TV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -520,6 +665,11 @@ LL |     check(m9::TV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -534,6 +684,11 @@ LL |     check(mA::TV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -548,6 +703,11 @@ LL |     check(mA::TV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -562,6 +722,11 @@ LL |     check(xm9::TV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -576,6 +741,11 @@ LL |     check(xm9::TV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -590,6 +760,11 @@ LL |     check(xmA::TV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -604,6 +779,11 @@ LL |     check(xmA::TV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -618,6 +798,11 @@ LL |     check(mB::UV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -632,6 +817,11 @@ LL |     check(mB::UV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -646,6 +836,11 @@ LL |     check(mC::UV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -660,6 +855,11 @@ LL |     check(mC::UV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -674,6 +874,11 @@ LL |     check(xmB::UV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -688,6 +893,11 @@ LL |     check(xmB::UV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -702,6 +912,11 @@ LL |     check(xmC::UV{});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
@@ -716,6 +931,11 @@ LL |     check(xmC::UV);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/namespace-mix.rs:20:1
+   |
+LL | trait Impossible {}
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `check`
   --> $DIR/namespace-mix.rs:21:13
    |
diff --git a/tests/ui/nested-ty-params.rs b/tests/ui/nested-ty-params.rs
index 85413acdb14..25bac1ba24b 100644
--- a/tests/ui/nested-ty-params.rs
+++ b/tests/ui/nested-ty-params.rs
@@ -1,4 +1,4 @@
-// error-pattern:can't use generic parameters from outer function
+// error-pattern:can't use generic parameters from outer item
 fn hd<U>(v: Vec<U> ) -> U {
     fn hd1(w: [U]) -> U { return w[0]; }
 
diff --git a/tests/ui/nested-ty-params.stderr b/tests/ui/nested-ty-params.stderr
index 8f4746f5ec3..a9cdec66719 100644
--- a/tests/ui/nested-ty-params.stderr
+++ b/tests/ui/nested-ty-params.stderr
@@ -1,22 +1,22 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/nested-ty-params.rs:3:16
    |
 LL | fn hd<U>(v: Vec<U> ) -> U {
-   |       - type parameter from outer function
+   |       - type parameter from outer item
 LL |     fn hd1(w: [U]) -> U { return w[0]; }
-   |           -    ^ use of generic parameter from outer function
+   |           -    ^ use of generic parameter from outer item
    |           |
-   |           help: try using a local generic parameter instead: `<U>`
+   |           help: try introducing a local generic parameter here: `<U>`
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/nested-ty-params.rs:3:23
    |
 LL | fn hd<U>(v: Vec<U> ) -> U {
-   |       - type parameter from outer function
+   |       - type parameter from outer item
 LL |     fn hd1(w: [U]) -> U { return w[0]; }
-   |           -           ^ use of generic parameter from outer function
+   |           -           ^ use of generic parameter from outer item
    |           |
-   |           help: try using a local generic parameter instead: `<U>`
+   |           help: try introducing a local generic parameter here: `<U>`
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/never_type/feature-gate-never_type_fallback.stderr b/tests/ui/never_type/feature-gate-never_type_fallback.stderr
index 2db1cc4b776..56aafbb4ce8 100644
--- a/tests/ui/never_type/feature-gate-never_type_fallback.stderr
+++ b/tests/ui/never_type/feature-gate-never_type_fallback.stderr
@@ -8,6 +8,11 @@ LL |     foo(panic!())
    |     |   this tail expression is of type `()`
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/feature-gate-never_type_fallback.rs:7:1
+   |
+LL | trait T {}
+   | ^^^^^^^
 note: required by a bound in `foo`
   --> $DIR/feature-gate-never_type_fallback.rs:13:16
    |
diff --git a/tests/ui/never_type/impl_trait_fallback3.stderr b/tests/ui/never_type/impl_trait_fallback3.stderr
index 5d5d216fb9b..821d141569e 100644
--- a/tests/ui/never_type/impl_trait_fallback3.stderr
+++ b/tests/ui/never_type/impl_trait_fallback3.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(): T` is not satisfied
    |
 LL | fn a() -> Foo {
    |           ^^^ the trait `T` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/impl_trait_fallback3.rs:5:1
+   |
+LL | trait T {
+   | ^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/never_type/impl_trait_fallback4.stderr b/tests/ui/never_type/impl_trait_fallback4.stderr
index f2e216e9044..67421ba8da7 100644
--- a/tests/ui/never_type/impl_trait_fallback4.stderr
+++ b/tests/ui/never_type/impl_trait_fallback4.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(): T` is not satisfied
    |
 LL | fn foo() -> impl T {
    |             ^^^^^^ the trait `T` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/impl_trait_fallback4.rs:3:1
+   |
+LL | trait T {
+   | ^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/nll/missing-universe-cause-issue-114907.rs b/tests/ui/nll/missing-universe-cause-issue-114907.rs
new file mode 100644
index 00000000000..94acdccfcf2
--- /dev/null
+++ b/tests/ui/nll/missing-universe-cause-issue-114907.rs
@@ -0,0 +1,40 @@
+// This is a non-regression test for issue #114907 where an ICE happened because of missing
+// `UniverseInfo`s accessed during diagnostics.
+//
+// A couple notes:
+// - the `FnOnce` bounds need an arg that is a reference
+// - a custom `Drop` is needed somewhere in the type that `accept` returns, to create universes
+//   during liveness and dropck outlives computation
+
+// check-fail
+
+trait Role {
+    type Inner;
+}
+
+struct HandshakeCallback<C>(C);
+impl<C: FnOnce(&())> Role for HandshakeCallback<C> {
+    type Inner = ();
+}
+
+struct Handshake<R: Role> {
+    _inner: Option<R::Inner>,
+}
+impl<R: Role> Drop for Handshake<R> {
+    fn drop(&mut self) {}
+}
+
+fn accept<C: FnOnce(&())>(_: C) -> Handshake<HandshakeCallback<C>> {
+    todo!()
+}
+
+fn main() {
+    let callback = |_| {};
+    accept(callback);
+    //~^ ERROR mismatched types
+    //~| ERROR mismatched types
+    //~| ERROR implementation of `FnOnce` is not general enough
+    //~| ERROR implementation of `FnOnce` is not general enough
+    //~| ERROR higher-ranked subtype error
+    //~| ERROR higher-ranked subtype error
+}
diff --git a/tests/ui/nll/missing-universe-cause-issue-114907.stderr b/tests/ui/nll/missing-universe-cause-issue-114907.stderr
new file mode 100644
index 00000000000..c3dd4257a73
--- /dev/null
+++ b/tests/ui/nll/missing-universe-cause-issue-114907.stderr
@@ -0,0 +1,79 @@
+error[E0308]: mismatched types
+  --> $DIR/missing-universe-cause-issue-114907.rs:33:5
+   |
+LL |     accept(callback);
+   |     ^^^^^^^^^^^^^^^^ one type is more general than the other
+   |
+   = note: expected trait `for<'a> FnOnce<(&'a (),)>`
+              found trait `FnOnce<(&(),)>`
+note: this closure does not fulfill the lifetime requirements
+  --> $DIR/missing-universe-cause-issue-114907.rs:32:20
+   |
+LL |     let callback = |_| {};
+   |                    ^^^
+note: the lifetime requirement is introduced here
+  --> $DIR/missing-universe-cause-issue-114907.rs:27:14
+   |
+LL | fn accept<C: FnOnce(&())>(_: C) -> Handshake<HandshakeCallback<C>> {
+   |              ^^^^^^^^^^^
+help: consider specifying the type of the closure parameters
+   |
+LL |     let callback = |_: &_| {};
+   |                    ~~~~~~~
+
+error: implementation of `FnOnce` is not general enough
+  --> $DIR/missing-universe-cause-issue-114907.rs:33:5
+   |
+LL |     accept(callback);
+   |     ^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
+   |
+   = note: closure with signature `fn(&'2 ())` must implement `FnOnce<(&'1 (),)>`, for any lifetime `'1`...
+   = note: ...but it actually implements `FnOnce<(&'2 (),)>`, for some specific lifetime `'2`
+
+error: implementation of `FnOnce` is not general enough
+  --> $DIR/missing-universe-cause-issue-114907.rs:33:5
+   |
+LL |     accept(callback);
+   |     ^^^^^^^^^^^^^^^^ implementation of `FnOnce` is not general enough
+   |
+   = note: closure with signature `fn(&'2 ())` must implement `FnOnce<(&'1 (),)>`, for any lifetime `'1`...
+   = note: ...but it actually implements `FnOnce<(&'2 (),)>`, for some specific lifetime `'2`
+
+error[E0308]: mismatched types
+  --> $DIR/missing-universe-cause-issue-114907.rs:33:5
+   |
+LL |     accept(callback);
+   |     ^^^^^^^^^^^^^^^^ one type is more general than the other
+   |
+   = note: expected trait `for<'a> FnOnce<(&'a (),)>`
+              found trait `FnOnce<(&(),)>`
+note: this closure does not fulfill the lifetime requirements
+  --> $DIR/missing-universe-cause-issue-114907.rs:32:20
+   |
+LL |     let callback = |_| {};
+   |                    ^^^
+note: the lifetime requirement is introduced here
+  --> $DIR/missing-universe-cause-issue-114907.rs:20:21
+   |
+LL | struct Handshake<R: Role> {
+   |                     ^^^^
+help: consider specifying the type of the closure parameters
+   |
+LL |     let callback = |_: &_| {};
+   |                    ~~~~~~~
+
+error: higher-ranked subtype error
+  --> $DIR/missing-universe-cause-issue-114907.rs:33:21
+   |
+LL |     accept(callback);
+   |                     ^
+
+error: higher-ranked subtype error
+  --> $DIR/missing-universe-cause-issue-114907.rs:33:21
+   |
+LL |     accept(callback);
+   |                     ^
+
+error: aborting due to 6 previous errors
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/object-safety/assoc_type_bounds_sized_used.rs b/tests/ui/object-safety/assoc_type_bounds_sized_used.rs
index cf5345b1c1d..d59fc1712ea 100644
--- a/tests/ui/object-safety/assoc_type_bounds_sized_used.rs
+++ b/tests/ui/object-safety/assoc_type_bounds_sized_used.rs
@@ -1,6 +1,5 @@
-//! This test checks that even if some associated types have
-//! `where Self: Sized` bounds, those without still need to be
-//! mentioned in trait objects.
+//! This test checks that associated types with `Self: Sized` cannot be projected
+//! from a `dyn Trait`.
 
 trait Bop {
     type Bar: Default
@@ -16,5 +15,4 @@ fn bop<T: Bop + ?Sized>() {
 
 fn main() {
     bop::<dyn Bop>();
-    //~^ ERROR: the size for values of type `dyn Bop` cannot be known at compilation time
 }
diff --git a/tests/ui/object-safety/assoc_type_bounds_sized_used.stderr b/tests/ui/object-safety/assoc_type_bounds_sized_used.stderr
index 6b5bc360349..224d33fb2da 100644
--- a/tests/ui/object-safety/assoc_type_bounds_sized_used.stderr
+++ b/tests/ui/object-safety/assoc_type_bounds_sized_used.stderr
@@ -1,5 +1,5 @@
 error[E0599]: the function or associated item `default` exists for associated type `<T as Bop>::Bar`, but its trait bounds were not satisfied
-  --> $DIR/assoc_type_bounds_sized_used.rs:12:30
+  --> $DIR/assoc_type_bounds_sized_used.rs:11:30
    |
 LL |     let _ = <T as Bop>::Bar::default();
    |                              ^^^^^^^ function or associated item cannot be called on `<T as Bop>::Bar` due to unsatisfied trait bounds
@@ -13,7 +13,7 @@ LL | fn bop<T: Bop + ?Sized>() where T: Sized {
    |                           ++++++++++++++
 
 error[E0277]: the size for values of type `T` cannot be known at compilation time
-  --> $DIR/assoc_type_bounds_sized_used.rs:12:14
+  --> $DIR/assoc_type_bounds_sized_used.rs:11:14
    |
 LL | fn bop<T: Bop + ?Sized>() {
    |        - this type parameter needs to be `Sized`
@@ -21,7 +21,7 @@ LL |     let _ = <T as Bop>::Bar::default();
    |              ^ doesn't have a size known at compile-time
    |
 note: required by a bound in `Bop::Bar`
-  --> $DIR/assoc_type_bounds_sized_used.rs:8:15
+  --> $DIR/assoc_type_bounds_sized_used.rs:7:15
    |
 LL |     type Bar: Default
    |          --- required by a bound in this associated type
@@ -34,20 +34,7 @@ LL - fn bop<T: Bop + ?Sized>() {
 LL + fn bop<T: Bop>() {
    |
 
-error[E0277]: the size for values of type `dyn Bop` cannot be known at compilation time
-  --> $DIR/assoc_type_bounds_sized_used.rs:18:11
-   |
-LL |     bop::<dyn Bop>();
-   |           ^^^^^^^ doesn't have a size known at compile-time
-   |
-   = help: the trait `Sized` is not implemented for `dyn Bop`
-note: required by a bound in `bop`
-  --> $DIR/assoc_type_bounds_sized_used.rs:11:11
-   |
-LL | fn bop<T: Bop + ?Sized>() {
-   |           ^^^ required by this bound in `bop`
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 Some errors have detailed explanations: E0277, E0599.
 For more information about an error, try `rustc --explain E0277`.
diff --git a/tests/ui/object-safety/call-when-assoc-ty-is-sized.rs b/tests/ui/object-safety/call-when-assoc-ty-is-sized.rs
new file mode 100644
index 00000000000..0b30a88fdd4
--- /dev/null
+++ b/tests/ui/object-safety/call-when-assoc-ty-is-sized.rs
@@ -0,0 +1,25 @@
+// check-pass
+// revisions: current next
+//[next] compile-flags: -Ztrait-solver=next
+
+trait Foo {
+    type Bar<'a>
+    where
+        Self: Sized;
+
+    fn test(&self);
+}
+
+impl Foo for () {
+    type Bar<'a> = () where Self: Sized;
+
+    fn test(&self) {}
+}
+
+fn test(x: &dyn Foo) {
+    x.test();
+}
+
+fn main() {
+    test(&());
+}
diff --git a/tests/ui/on-unimplemented/on-trait.stderr b/tests/ui/on-unimplemented/on-trait.stderr
index 4b040f1ac5a..4847a1a5a61 100644
--- a/tests/ui/on-unimplemented/on-trait.stderr
+++ b/tests/ui/on-unimplemented/on-trait.stderr
@@ -5,6 +5,11 @@ LL |     let y: Option<Vec<u8>> = collect(x.iter()); // this should give approxi
    |                              ^^^^^^^ a collection of type `Option<Vec<u8>>` cannot be built from an iterator over elements of type `&u8`
    |
    = help: the trait `MyFromIterator<&u8>` is not implemented for `Option<Vec<u8>>`
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-trait.rs:17:1
+   |
+LL | trait MyFromIterator<A> {
+   | ^^^^^^^^^^^^^^^^^^^^^^^
 note: required by a bound in `collect`
   --> $DIR/on-trait.rs:22:39
    |
@@ -18,6 +23,11 @@ LL |     let x: String = foobar();
    |                     ^^^^^^ test error `String` with `u8` `_` `u32` in `Foo`
    |
    = help: the trait `Foo<u8, _, u32>` is not implemented for `String`
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-trait.rs:7:3
+   |
+LL |   pub trait Foo<Bar, Baz, Quux> {}
+   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 note: required by a bound in `foobar`
   --> $DIR/on-trait.rs:12:24
    |
diff --git a/tests/ui/on-unimplemented/parent-label.stderr b/tests/ui/on-unimplemented/parent-label.stderr
index 8cd7412fd9d..101a41512d2 100644
--- a/tests/ui/on-unimplemented/parent-label.stderr
+++ b/tests/ui/on-unimplemented/parent-label.stderr
@@ -8,6 +8,11 @@ LL |         f(Foo {});
    |         |
    |         required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/parent-label.rs:6:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `f`
   --> $DIR/parent-label.rs:10:9
    |
@@ -24,6 +29,11 @@ LL |             f(Foo {});
    |             |
    |             required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/parent-label.rs:6:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `f`
   --> $DIR/parent-label.rs:10:9
    |
@@ -41,6 +51,11 @@ LL |             f(Foo {});
    |             |
    |             required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/parent-label.rs:6:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `f`
   --> $DIR/parent-label.rs:10:9
    |
@@ -58,6 +73,11 @@ LL |     f(Foo {});
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/parent-label.rs:6:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `f`
   --> $DIR/parent-label.rs:10:9
    |
diff --git a/tests/ui/parser/default-unmatched.stderr b/tests/ui/parser/default-unmatched.stderr
index 331e003f63c..de142411d69 100644
--- a/tests/ui/parser/default-unmatched.stderr
+++ b/tests/ui/parser/default-unmatched.stderr
@@ -11,6 +11,8 @@ error: expected item, found reserved keyword `do`
    |
 LL |     default do
    |             ^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/parser/impl-parsing.stderr b/tests/ui/parser/impl-parsing.stderr
index 755addf1452..a57cc075ccc 100644
--- a/tests/ui/parser/impl-parsing.stderr
+++ b/tests/ui/parser/impl-parsing.stderr
@@ -35,6 +35,8 @@ error: expected item, found keyword `unsafe`
    |
 LL | default unsafe FAIL
    |         ^^^^^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 6 previous errors
 
diff --git a/tests/ui/parser/issue-101477-enum.stderr b/tests/ui/parser/issue-101477-enum.stderr
index 1edca391e8f..94130671f1c 100644
--- a/tests/ui/parser/issue-101477-enum.stderr
+++ b/tests/ui/parser/issue-101477-enum.stderr
@@ -11,6 +11,8 @@ error: expected item, found `==`
    |
 LL |     B == 2
    |       ^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/parser/issues/issue-113110-non-item-at-module-root.rs b/tests/ui/parser/issues/issue-113110-non-item-at-module-root.rs
new file mode 100644
index 00000000000..3b6f4304369
--- /dev/null
+++ b/tests/ui/parser/issues/issue-113110-non-item-at-module-root.rs
@@ -0,0 +1 @@
+ 5 //~ ERROR expected item, found `5`
diff --git a/tests/ui/parser/issues/issue-113110-non-item-at-module-root.stderr b/tests/ui/parser/issues/issue-113110-non-item-at-module-root.stderr
new file mode 100644
index 00000000000..0789c4548a0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-113110-non-item-at-module-root.stderr
@@ -0,0 +1,10 @@
+error: expected item, found `5`
+  --> $DIR/issue-113110-non-item-at-module-root.rs:1:2
+   |
+LL |  5
+   |  ^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
+
+error: aborting due to previous error
+
diff --git a/tests/ui/parser/issues/issue-115780-pat-lt-bracket-in-macro-call.rs b/tests/ui/parser/issues/issue-115780-pat-lt-bracket-in-macro-call.rs
new file mode 100644
index 00000000000..3421333b8a0
--- /dev/null
+++ b/tests/ui/parser/issues/issue-115780-pat-lt-bracket-in-macro-call.rs
@@ -0,0 +1,21 @@
+// Regression test for issue #115780.
+// Ensure that we don't emit a parse error for the token sequence `Ident "<" Ty` in pattern position
+// if we are inside a macro call since it can be valid input for a subsequent macro rule.
+// See also #103534.
+
+// check-pass
+
+macro_rules! mdo {
+    ($p: pat =<< $e: expr ; $( $t: tt )*) => {
+        $e.and_then(|$p| mdo! { $( $t )* })
+    };
+    (ret<$ty: ty> $e: expr;) => { Some::<$ty>($e) };
+}
+
+fn main() {
+    mdo! {
+        x_val =<< Some(0);
+        y_val =<< Some(1);
+        ret<(i32, i32)> (x_val, y_val);
+    };
+}
diff --git a/tests/ui/parser/issues/issue-17904-2.stderr b/tests/ui/parser/issues/issue-17904-2.stderr
index 9c7fdf6ccb4..7185a5e5752 100644
--- a/tests/ui/parser/issues/issue-17904-2.stderr
+++ b/tests/ui/parser/issues/issue-17904-2.stderr
@@ -3,6 +3,8 @@ error: expected item, found keyword `where`
    |
 LL | struct Bar<T> { x: T } where T: Copy
    |                        ^^^^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to previous error
 
diff --git a/tests/ui/parser/issues/issue-43196.stderr b/tests/ui/parser/issues/issue-43196.stderr
index 4f7ed5cc6fd..15bbb158cd1 100644
--- a/tests/ui/parser/issues/issue-43196.stderr
+++ b/tests/ui/parser/issues/issue-43196.stderr
@@ -11,6 +11,8 @@ error: expected item, found `|`
    |
 LL | |
    | ^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/parser/issues/issue-62913.stderr b/tests/ui/parser/issues/issue-62913.stderr
index 6f385e8dc17..c33e4683728 100644
--- a/tests/ui/parser/issues/issue-62913.stderr
+++ b/tests/ui/parser/issues/issue-62913.stderr
@@ -17,6 +17,8 @@ error: expected item, found `"\u\"`
    |
 LL | "\u\"
    | ^^^^^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 3 previous errors
 
diff --git a/tests/ui/parser/issues/issue-68890.stderr b/tests/ui/parser/issues/issue-68890.stderr
index 2a3bf6b41f0..0d7b53a67c5 100644
--- a/tests/ui/parser/issues/issue-68890.stderr
+++ b/tests/ui/parser/issues/issue-68890.stderr
@@ -15,6 +15,8 @@ error: expected item, found `)`
    |
 LL | enum e{A((?'a a+?+l))}
    |                     ^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 3 previous errors
 
diff --git a/tests/ui/parser/macro/macro-expand-to-field.rs b/tests/ui/parser/macro/macro-expand-to-field.rs
index 155872f7a5d..533511ecf5a 100644
--- a/tests/ui/parser/macro/macro-expand-to-field.rs
+++ b/tests/ui/parser/macro/macro-expand-to-field.rs
@@ -1,5 +1,7 @@
 // compile-flags: --crate-type=lib
 
+// https://github.com/rust-lang/rust/issues/113766
+
 macro_rules! field {
     ($name:ident:$type:ty) => {
         $name:$type
@@ -13,15 +15,14 @@ macro_rules! variant {
 }
 
 struct Struct {
+    //~^ NOTE while parsing this struct
     field!(bar:u128),
     //~^ NOTE macros cannot expand to struct fields
     //~| ERROR unexpected token: `!`
     //~| NOTE unexpected token after this
     a: u32,
     b: u32,
-    field!(recovers:()), //~ NOTE macros cannot expand to struct fields
-    //~^ ERROR unexpected token: `!`
-    //~^^ NOTE unexpected token after this
+    field!(recovers:()),
 }
 
 enum EnumVariant {
@@ -35,7 +36,7 @@ enum EnumVariant {
     //~^ NOTE macros cannot expand to enum variants
     //~| ERROR unexpected token: `!`
     //~| NOTE unexpected token after this
-    Data {
+    Data { //~ NOTE while parsing this struct
         field!(x:u32),
         //~^ NOTE macros cannot expand to struct fields
         //~| ERROR unexpected token: `!`
@@ -44,27 +45,35 @@ enum EnumVariant {
 }
 
 enum EnumVariantField {
-    Named {
+    Named { //~ NOTE while parsing this struct
         field!(oopsies:()),
         //~^ NOTE macros cannot expand to struct fields
         //~| ERROR unexpected token: `!`
         //~| unexpected token after this
         field!(oopsies2:()),
-        //~^ NOTE macros cannot expand to struct fields
-        //~| ERROR unexpected token: `!`
-        //~| unexpected token after this
     },
 }
 
 union Union {
+    //~^ NOTE while parsing this union
     A: u32,
     field!(oopsies:()),
     //~^ NOTE macros cannot expand to union fields
     //~| ERROR unexpected token: `!`
-    //~| unexpected token after this
+    //~| NOTE unexpected token after this
     B: u32,
     field!(recovers:()),
-    //~^ NOTE macros cannot expand to union fields
+}
+
+// https://github.com/rust-lang/rust/issues/114636
+
+#[derive(Debug)]
+pub struct Lazy {
+    //~^ NOTE while parsing this struct
+    unreachable!()
+    //~^ NOTE macros cannot expand to struct fields
     //~| ERROR unexpected token: `!`
-    //~| unexpected token after this
+    //~| NOTE unexpected token after this
 }
+
+fn main() {}
diff --git a/tests/ui/parser/macro/macro-expand-to-field.stderr b/tests/ui/parser/macro/macro-expand-to-field.stderr
index adcd032f5c0..0bb71800081 100644
--- a/tests/ui/parser/macro/macro-expand-to-field.stderr
+++ b/tests/ui/parser/macro/macro-expand-to-field.stderr
@@ -1,21 +1,16 @@
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:16:10
+  --> $DIR/macro-expand-to-field.rs:19:10
    |
+LL | struct Struct {
+   |        ------ while parsing this struct
+LL |
 LL |     field!(bar:u128),
    |          ^ unexpected token after this
    |
    = note: macros cannot expand to struct fields
 
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:22:10
-   |
-LL |     field!(recovers:()),
-   |          ^ unexpected token after this
-   |
-   = note: macros cannot expand to struct fields
-
-error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:28:12
+  --> $DIR/macro-expand-to-field.rs:29:12
    |
 LL |     variant!(whoops),
    |            ^ unexpected token after this
@@ -23,7 +18,7 @@ LL |     variant!(whoops),
    = note: macros cannot expand to enum variants
 
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:34:12
+  --> $DIR/macro-expand-to-field.rs:35:12
    |
 LL |     variant!(recovers),
    |            ^ unexpected token after this
@@ -31,44 +26,46 @@ LL |     variant!(recovers),
    = note: macros cannot expand to enum variants
 
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:39:14
+  --> $DIR/macro-expand-to-field.rs:40:14
    |
+LL |     Data {
+   |     ---- while parsing this struct
 LL |         field!(x:u32),
    |              ^ unexpected token after this
    |
    = note: macros cannot expand to struct fields
 
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:48:14
+  --> $DIR/macro-expand-to-field.rs:49:14
    |
+LL |     Named {
+   |     ----- while parsing this struct
 LL |         field!(oopsies:()),
    |              ^ unexpected token after this
    |
    = note: macros cannot expand to struct fields
 
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:52:14
-   |
-LL |         field!(oopsies2:()),
-   |              ^ unexpected token after this
-   |
-   = note: macros cannot expand to struct fields
-
-error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:61:10
+  --> $DIR/macro-expand-to-field.rs:60:10
    |
+LL | union Union {
+   |       ----- while parsing this union
+...
 LL |     field!(oopsies:()),
    |          ^ unexpected token after this
    |
    = note: macros cannot expand to union fields
 
 error: unexpected token: `!`
-  --> $DIR/macro-expand-to-field.rs:66:10
+  --> $DIR/macro-expand-to-field.rs:73:16
    |
-LL |     field!(recovers:()),
-   |          ^ unexpected token after this
+LL | pub struct Lazy {
+   |            ---- while parsing this struct
+LL |
+LL |     unreachable!()
+   |                ^ unexpected token after this
    |
-   = note: macros cannot expand to union fields
+   = note: macros cannot expand to struct fields
 
-error: aborting due to 9 previous errors
+error: aborting due to 7 previous errors
 
diff --git a/tests/ui/parser/shebang/shebang-doc-comment.stderr b/tests/ui/parser/shebang/shebang-doc-comment.stderr
index 2227d45ec5a..a36b2a2f72b 100644
--- a/tests/ui/parser/shebang/shebang-doc-comment.stderr
+++ b/tests/ui/parser/shebang/shebang-doc-comment.stderr
@@ -3,6 +3,8 @@ error: expected item, found `[`
    |
 LL | [allow(unused_variables)]
    | ^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to previous error
 
diff --git a/tests/ui/parser/struct-literal-in-if.rs b/tests/ui/parser/struct-literal-in-if.rs
index 2ce2c8f1899..c4a253c3da2 100644
--- a/tests/ui/parser/struct-literal-in-if.rs
+++ b/tests/ui/parser/struct-literal-in-if.rs
@@ -14,4 +14,9 @@ fn main() {
     }.hi() {
         println!("yo");
     }
+    if let true = Foo { //~ ERROR struct literals are not allowed here
+        x: 3
+    }.hi() {
+        println!("yo");
+    }
 }
diff --git a/tests/ui/parser/struct-literal-in-if.stderr b/tests/ui/parser/struct-literal-in-if.stderr
index b5a9864bbc4..8b72469fcf5 100644
--- a/tests/ui/parser/struct-literal-in-if.stderr
+++ b/tests/ui/parser/struct-literal-in-if.stderr
@@ -14,5 +14,21 @@ LL |         x: 3
 LL ~     }).hi() {
    |
 
-error: aborting due to previous error
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-in-if.rs:17:19
+   |
+LL |       if let true = Foo {
+   |  ___________________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     if let true = (Foo {
+LL |         x: 3
+LL ~     }).hi() {
+   |
+
+error: aborting due to 2 previous errors
 
diff --git a/tests/ui/parser/struct-literal-in-match-guard.rs b/tests/ui/parser/struct-literal-in-match-guard.rs
index bf0551b5c97..bbee60e2817 100644
--- a/tests/ui/parser/struct-literal-in-match-guard.rs
+++ b/tests/ui/parser/struct-literal-in-match-guard.rs
@@ -3,6 +3,8 @@
 // Unlike `if` condition, `match` guards accept struct literals.
 // This is detected in <https://github.com/rust-lang/rust/pull/74566#issuecomment-663613705>.
 
+#![feature(if_let_guard)]
+
 #[derive(PartialEq)]
 struct Foo {
     x: isize,
@@ -11,6 +13,7 @@ struct Foo {
 fn foo(f: Foo) {
     match () {
         () if f == Foo { x: 42 } => {}
+        () if let Foo { x: 0.. } = Foo { x: 42 } => {}
         _ => {}
     }
 }
diff --git a/tests/ui/parser/struct-literal-in-while.rs b/tests/ui/parser/struct-literal-in-while.rs
index 5000ce85b7f..86931f7888d 100644
--- a/tests/ui/parser/struct-literal-in-while.rs
+++ b/tests/ui/parser/struct-literal-in-while.rs
@@ -14,4 +14,9 @@ fn main() {
     }.hi() {
         println!("yo");
     }
+    while let true = Foo { //~ ERROR struct literals are not allowed here
+        x: 3
+    }.hi() {
+        println!("yo");
+    }
 }
diff --git a/tests/ui/parser/struct-literal-in-while.stderr b/tests/ui/parser/struct-literal-in-while.stderr
index 17e9277e074..13d003608a1 100644
--- a/tests/ui/parser/struct-literal-in-while.stderr
+++ b/tests/ui/parser/struct-literal-in-while.stderr
@@ -14,5 +14,21 @@ LL |         x: 3
 LL ~     }).hi() {
    |
 
-error: aborting due to previous error
+error: struct literals are not allowed here
+  --> $DIR/struct-literal-in-while.rs:17:22
+   |
+LL |       while let true = Foo {
+   |  ______________________^
+LL | |         x: 3
+LL | |     }.hi() {
+   | |_____^
+   |
+help: surround the struct literal with parentheses
+   |
+LL ~     while let true = (Foo {
+LL |         x: 3
+LL ~     }).hi() {
+   |
+
+error: aborting due to 2 previous errors
 
diff --git a/tests/ui/parser/virtual-structs.stderr b/tests/ui/parser/virtual-structs.stderr
index a5211d83f84..268fc105796 100644
--- a/tests/ui/parser/virtual-structs.stderr
+++ b/tests/ui/parser/virtual-structs.stderr
@@ -3,6 +3,8 @@ error: expected item, found reserved keyword `virtual`
    |
 LL | virtual struct SuperStruct {
    | ^^^^^^^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to previous error
 
diff --git a/tests/ui/pattern/issue-114896.rs b/tests/ui/pattern/issue-114896.rs
new file mode 100644
index 00000000000..cde37f658d6
--- /dev/null
+++ b/tests/ui/pattern/issue-114896.rs
@@ -0,0 +1,7 @@
+fn main() {
+    fn x(a: &char) {
+        let &b = a;
+        b.make_ascii_uppercase();
+//~^ cannot borrow `b` as mutable, as it is not declared as mutable
+    }
+}
diff --git a/tests/ui/pattern/issue-114896.stderr b/tests/ui/pattern/issue-114896.stderr
new file mode 100644
index 00000000000..ffeb7bc1365
--- /dev/null
+++ b/tests/ui/pattern/issue-114896.stderr
@@ -0,0 +1,11 @@
+error[E0596]: cannot borrow `b` as mutable, as it is not declared as mutable
+  --> $DIR/issue-114896.rs:4:9
+   |
+LL |         let &b = a;
+   |             -- help: consider changing this to be mutable: `&(mut b)`
+LL |         b.make_ascii_uppercase();
+   |         ^ cannot borrow as mutable
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0596`.
diff --git a/tests/ui/pattern/usefulness/auxiliary/non-exhaustive.rs b/tests/ui/pattern/usefulness/auxiliary/non-exhaustive.rs
new file mode 100644
index 00000000000..6f459b8268f
--- /dev/null
+++ b/tests/ui/pattern/usefulness/auxiliary/non-exhaustive.rs
@@ -0,0 +1,2 @@
+#[non_exhaustive]
+pub enum NonExhaustiveEnum { A, B }
diff --git a/tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.rs b/tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.rs
new file mode 100644
index 00000000000..0ee7856c680
--- /dev/null
+++ b/tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.rs
@@ -0,0 +1,12 @@
+fn main() {
+    let a = "";
+    let b = "";
+    match (a, b) {
+        //~^ ERROR non-exhaustive patterns: `(&_, _)` not covered [E0004]
+        //~| NOTE pattern `(&_, _)` not covered
+        //~| NOTE the matched value is of type `(&str, &str)`
+        //~| NOTE `&str` cannot be matched exhaustively, so a wildcard `_` is necessary
+        ("a", "b") => {}
+        ("c", "d") => {}
+    }
+}
diff --git a/tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.stderr b/tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.stderr
new file mode 100644
index 00000000000..771fc320a13
--- /dev/null
+++ b/tests/ui/pattern/usefulness/issue-105479-str-non-exhaustiveness.stderr
@@ -0,0 +1,17 @@
+error[E0004]: non-exhaustive patterns: `(&_, _)` not covered
+  --> $DIR/issue-105479-str-non-exhaustiveness.rs:4:11
+   |
+LL |     match (a, b) {
+   |           ^^^^^^ pattern `(&_, _)` not covered
+   |
+   = note: the matched value is of type `(&str, &str)`
+   = note: `&str` cannot be matched exhaustively, so a wildcard `_` is necessary
+help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
+   |
+LL ~         ("c", "d") => {},
+LL +         (&_, _) => todo!()
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.
diff --git a/tests/ui/pattern/usefulness/issue-30240.stderr b/tests/ui/pattern/usefulness/issue-30240.stderr
index ff755d681ac..da8bbdffbf6 100644
--- a/tests/ui/pattern/usefulness/issue-30240.stderr
+++ b/tests/ui/pattern/usefulness/issue-30240.stderr
@@ -5,6 +5,7 @@ LL |     match "world" {
    |           ^^^^^^^ pattern `&_` not covered
    |
    = note: the matched value is of type `&str`
+   = note: `&str` cannot be matched exhaustively, so a wildcard `_` is necessary
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
 LL ~         "hello" => {},
@@ -18,6 +19,7 @@ LL |     match "world" {
    |           ^^^^^^^ pattern `&_` not covered
    |
    = note: the matched value is of type `&str`
+   = note: `&str` cannot be matched exhaustively, so a wildcard `_` is necessary
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
 LL ~         "hello" => {},
diff --git a/tests/ui/pattern/usefulness/nested-non-exhaustive-enums.rs b/tests/ui/pattern/usefulness/nested-non-exhaustive-enums.rs
new file mode 100644
index 00000000000..3a8a74d1fd6
--- /dev/null
+++ b/tests/ui/pattern/usefulness/nested-non-exhaustive-enums.rs
@@ -0,0 +1,18 @@
+// aux-build:non-exhaustive.rs
+
+extern crate non_exhaustive;
+
+use non_exhaustive::NonExhaustiveEnum;
+
+fn main() {
+    match Some(NonExhaustiveEnum::A) {
+        //~^ ERROR non-exhaustive patterns: `Some(_)` not covered [E0004]
+        //~| NOTE pattern `Some(_)` not covered
+        //~| NOTE `Option<NonExhaustiveEnum>` defined here
+        //~| NOTE the matched value is of type `Option<NonExhaustiveEnum>`
+        //~| NOTE `NonExhaustiveEnum` is marked as non-exhaustive
+        Some(NonExhaustiveEnum::A) => {}
+        Some(NonExhaustiveEnum::B) => {}
+        None => {}
+    }
+}
diff --git a/tests/ui/pattern/usefulness/nested-non-exhaustive-enums.stderr b/tests/ui/pattern/usefulness/nested-non-exhaustive-enums.stderr
new file mode 100644
index 00000000000..9fbd871db7c
--- /dev/null
+++ b/tests/ui/pattern/usefulness/nested-non-exhaustive-enums.stderr
@@ -0,0 +1,22 @@
+error[E0004]: non-exhaustive patterns: `Some(_)` not covered
+  --> $DIR/nested-non-exhaustive-enums.rs:8:11
+   |
+LL |     match Some(NonExhaustiveEnum::A) {
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^ pattern `Some(_)` not covered
+   |
+note: `Option<NonExhaustiveEnum>` defined here
+  --> $SRC_DIR/core/src/option.rs:LL:COL
+  ::: $SRC_DIR/core/src/option.rs:LL:COL
+   |
+   = note: not covered
+   = note: the matched value is of type `Option<NonExhaustiveEnum>`
+   = note: `NonExhaustiveEnum` is marked as non-exhaustive, so a wildcard `_` is necessary to match exhaustively
+help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
+   |
+LL ~         None => {},
+LL +         Some(_) => todo!()
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.
diff --git a/tests/ui/privacy/associated-item-privacy-inherent.rs b/tests/ui/privacy/associated-item-privacy-inherent.rs
index 7b7c734a99a..81703ae1067 100644
--- a/tests/ui/privacy/associated-item-privacy-inherent.rs
+++ b/tests/ui/privacy/associated-item-privacy-inherent.rs
@@ -1,5 +1,5 @@
 #![feature(decl_macro, associated_type_defaults)]
-#![allow(unused, private_in_public)]
+#![allow(private_interfaces)]
 
 mod priv_nominal {
     pub struct Pub;
diff --git a/tests/ui/privacy/associated-item-privacy-trait.rs b/tests/ui/privacy/associated-item-privacy-trait.rs
index c686a21772e..db77a6a7258 100644
--- a/tests/ui/privacy/associated-item-privacy-trait.rs
+++ b/tests/ui/privacy/associated-item-privacy-trait.rs
@@ -1,5 +1,5 @@
 #![feature(decl_macro, associated_type_defaults)]
-#![allow(unused, private_in_public)]
+#![allow(private_interfaces, private_bounds)]
 
 mod priv_trait {
     trait PrivTr {
diff --git a/tests/ui/privacy/associated-item-privacy-type-binding.rs b/tests/ui/privacy/associated-item-privacy-type-binding.rs
index 9826b83a35d..95a4fbf639c 100644
--- a/tests/ui/privacy/associated-item-privacy-type-binding.rs
+++ b/tests/ui/privacy/associated-item-privacy-type-binding.rs
@@ -1,5 +1,5 @@
 #![feature(decl_macro, associated_type_defaults)]
-#![allow(unused, private_in_public)]
+#![allow(private_interfaces, private_bounds)]
 
 mod priv_trait {
     trait PrivTr {
diff --git a/tests/ui/privacy/effective_visibilities_full_priv.rs b/tests/ui/privacy/effective_visibilities_full_priv.rs
index a26ae3bd122..b96eddcab67 100644
--- a/tests/ui/privacy/effective_visibilities_full_priv.rs
+++ b/tests/ui/privacy/effective_visibilities_full_priv.rs
@@ -1,5 +1,5 @@
 #![feature(rustc_attrs)]
-#![allow(private_in_public)]
+#![allow(private_interfaces)]
 
 struct SemiPriv;
 
diff --git a/tests/ui/privacy/issue-30079.rs b/tests/ui/privacy/issue-30079.rs
index a02a932d057..ddba629f528 100644
--- a/tests/ui/privacy/issue-30079.rs
+++ b/tests/ui/privacy/issue-30079.rs
@@ -3,8 +3,7 @@ struct SemiPriv;
 mod m1 {
     struct Priv;
     impl ::SemiPriv {
-        pub fn f(_: Priv) {} //~ WARN private type `m1::Priv` in public interface
-        //~^ WARNING hard error
+        pub fn f(_: Priv) {} //~ WARN type `m1::Priv` is more private than the item `m1::<impl SemiPriv>::f`
     }
 
     impl Priv {
diff --git a/tests/ui/privacy/issue-30079.stderr b/tests/ui/privacy/issue-30079.stderr
index 9179ff339bf..f1facba7cd2 100644
--- a/tests/ui/privacy/issue-30079.stderr
+++ b/tests/ui/privacy/issue-30079.stderr
@@ -1,15 +1,18 @@
-warning: private type `m1::Priv` in public interface (error E0446)
+warning: type `m1::Priv` is more private than the item `m1::<impl SemiPriv>::f`
   --> $DIR/issue-30079.rs:6:9
    |
 LL |         pub fn f(_: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^ associated function `m1::<impl SemiPriv>::f` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-   = note: `#[warn(private_in_public)]` on by default
+note: but type `m1::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/issue-30079.rs:4:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
+   = note: `#[warn(private_interfaces)]` on by default
 
 error[E0446]: private type `m2::Priv` in public interface
-  --> $DIR/issue-30079.rs:18:9
+  --> $DIR/issue-30079.rs:17:9
    |
 LL |     struct Priv;
    |     ----------- `m2::Priv` declared as private
@@ -18,7 +21,7 @@ LL |         type Target = Priv;
    |         ^^^^^^^^^^^ can't leak private type
 
 error[E0446]: private type `m3::Priv` in public interface
-  --> $DIR/issue-30079.rs:35:9
+  --> $DIR/issue-30079.rs:34:9
    |
 LL |     struct Priv;
    |     ----------- `m3::Priv` declared as private
diff --git a/tests/ui/privacy/private-bounds-locally-allowed.rs b/tests/ui/privacy/private-bounds-locally-allowed.rs
new file mode 100644
index 00000000000..96a007a64f6
--- /dev/null
+++ b/tests/ui/privacy/private-bounds-locally-allowed.rs
@@ -0,0 +1,7 @@
+// check-pass
+// compile-flags: --crate-type=lib
+
+#[allow(private_bounds)]
+pub trait Foo: FooImpl {}
+
+trait FooImpl {}
diff --git a/tests/ui/privacy/private-in-public-assoc-ty.rs b/tests/ui/privacy/private-in-public-assoc-ty.rs
index d4d379bdb73..5f7c4bcf265 100644
--- a/tests/ui/privacy/private-in-public-assoc-ty.rs
+++ b/tests/ui/privacy/private-in-public-assoc-ty.rs
@@ -22,14 +22,11 @@ mod m {
     // applies only to the aliased types, not bounds.
     pub trait PubTr {
         type Alias1: PrivTr;
-        //~^ WARN private trait `PrivTr` in public interface
-        //~| WARN this was previously accepted
+        //~^ WARN trait `PrivTr` is more private than the item `PubTr::Alias1`
         type Alias2: PubTrAux1<Priv> = u8;
-        //~^ WARN private type `Priv` in public interface
-        //~| WARN this was previously accepted
+        //~^ WARN type `Priv` is more private than the item `PubTr::Alias2`
         type Alias3: PubTrAux2<A = Priv> = u8;
-        //~^ WARN private type `Priv` in public interface
-        //~| WARN this was previously accepted
+        //~^ WARN type `Priv` is more private than the item `PubTr::Alias3`
 
         type Alias4 = Priv;
         //~^ ERROR private type `Priv` in public interface
diff --git a/tests/ui/privacy/private-in-public-assoc-ty.stderr b/tests/ui/privacy/private-in-public-assoc-ty.stderr
index a59027d81d2..0931e6d9971 100644
--- a/tests/ui/privacy/private-in-public-assoc-ty.stderr
+++ b/tests/ui/privacy/private-in-public-assoc-ty.stderr
@@ -7,36 +7,45 @@ LL |     struct Priv;
 LL |         type A = Priv;
    |         ^^^^^^ can't leak private type
 
-warning: private trait `PrivTr` in public interface (error E0445)
+warning: trait `PrivTr` is more private than the item `PubTr::Alias1`
   --> $DIR/private-in-public-assoc-ty.rs:24:9
    |
 LL |         type Alias1: PrivTr;
-   |         ^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^ associated type `PubTr::Alias1` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-   = note: `#[warn(private_in_public)]` on by default
+note: but trait `PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-assoc-ty.rs:9:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
+   = note: `#[warn(private_bounds)]` on by default
 
-warning: private type `Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-assoc-ty.rs:27:9
+warning: type `Priv` is more private than the item `PubTr::Alias2`
+  --> $DIR/private-in-public-assoc-ty.rs:26:9
    |
 LL |         type Alias2: PubTrAux1<Priv> = u8;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated type `PubTr::Alias2` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-assoc-ty.rs:8:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-warning: private type `Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-assoc-ty.rs:30:9
+warning: type `Priv` is more private than the item `PubTr::Alias3`
+  --> $DIR/private-in-public-assoc-ty.rs:28:9
    |
 LL |         type Alias3: PubTrAux2<A = Priv> = u8;
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated type `PubTr::Alias3` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-assoc-ty.rs:8:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
 error[E0446]: private type `Priv` in public interface
-  --> $DIR/private-in-public-assoc-ty.rs:34:9
+  --> $DIR/private-in-public-assoc-ty.rs:31:9
    |
 LL |     struct Priv;
    |     ----------- `Priv` declared as private
@@ -45,7 +54,7 @@ LL |         type Alias4 = Priv;
    |         ^^^^^^^^^^^ can't leak private type
 
 error[E0446]: private type `Priv` in public interface
-  --> $DIR/private-in-public-assoc-ty.rs:41:9
+  --> $DIR/private-in-public-assoc-ty.rs:38:9
    |
 LL |     struct Priv;
    |     ----------- `Priv` declared as private
@@ -53,8 +62,8 @@ LL |     struct Priv;
 LL |         type Alias1 = Priv;
    |         ^^^^^^^^^^^ can't leak private type
 
-error[E0445]: private trait `PrivTr` in public interface
-  --> $DIR/private-in-public-assoc-ty.rs:44:9
+error[E0446]: private trait `PrivTr` in public interface
+  --> $DIR/private-in-public-assoc-ty.rs:41:9
    |
 LL |     trait PrivTr {}
    |     ------------ `PrivTr` declared as private
@@ -64,5 +73,4 @@ LL |         type Exist = impl PrivTr;
 
 error: aborting due to 4 previous errors; 3 warnings emitted
 
-Some errors have detailed explanations: E0445, E0446.
-For more information about an error, try `rustc --explain E0445`.
+For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/privacy/private-in-public-lint.rs b/tests/ui/privacy/private-in-public-lint.rs
deleted file mode 100644
index 8b6e4360160..00000000000
--- a/tests/ui/privacy/private-in-public-lint.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-mod m1 {
-    pub struct Pub;
-    struct Priv;
-
-    impl Pub {
-        pub fn f() -> Priv {Priv} //~ ERROR private type `m1::Priv` in public interface
-    }
-}
-
-mod m2 {
-    pub struct Pub;
-    struct Priv;
-
-    impl Pub {
-        pub fn f() -> Priv {Priv} //~ ERROR private type `m2::Priv` in public interface
-    }
-}
-
-fn main() {}
diff --git a/tests/ui/privacy/private-in-public-lint.stderr b/tests/ui/privacy/private-in-public-lint.stderr
deleted file mode 100644
index 1e98e3bed14..00000000000
--- a/tests/ui/privacy/private-in-public-lint.stderr
+++ /dev/null
@@ -1,21 +0,0 @@
-error[E0446]: private type `m1::Priv` in public interface
-  --> $DIR/private-in-public-lint.rs:6:9
-   |
-LL |     struct Priv;
-   |     ----------- `m1::Priv` declared as private
-...
-LL |         pub fn f() -> Priv {Priv}
-   |         ^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `m2::Priv` in public interface
-  --> $DIR/private-in-public-lint.rs:15:9
-   |
-LL |     struct Priv;
-   |     ----------- `m2::Priv` declared as private
-...
-LL |         pub fn f() -> Priv {Priv}
-   |         ^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/privacy/private-in-public-non-principal-2.rs b/tests/ui/privacy/private-in-public-non-principal-2.rs
index db451d33429..d7223c647c0 100644
--- a/tests/ui/privacy/private-in-public-non-principal-2.rs
+++ b/tests/ui/privacy/private-in-public-non-principal-2.rs
@@ -1,7 +1,7 @@
 #![feature(auto_traits)]
 #![feature(negative_impls)]
 
-#[allow(private_in_public)]
+#[allow(private_interfaces)]
 mod m {
     pub trait PubPrincipal {}
     auto trait PrivNonPrincipal {}
diff --git a/tests/ui/privacy/private-in-public-non-principal.rs b/tests/ui/privacy/private-in-public-non-principal.rs
index a2284c93027..e348a181651 100644
--- a/tests/ui/privacy/private-in-public-non-principal.rs
+++ b/tests/ui/privacy/private-in-public-non-principal.rs
@@ -1,19 +1,11 @@
 #![feature(auto_traits)]
 #![feature(negative_impls)]
-#![feature(type_privacy_lints)]
-#![deny(private_interfaces)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
 
 pub trait PubPrincipal {}
 auto trait PrivNonPrincipal {}
 
 pub fn leak_dyn_nonprincipal() -> Box<dyn PubPrincipal + PrivNonPrincipal> { loop {} }
-//~^ WARN private trait `PrivNonPrincipal` in public interface
-//~| WARN this was previously accepted
-//~| ERROR trait `PrivNonPrincipal` is more private than the item `leak_dyn_nonprincipal`
+//~^ WARN trait `PrivNonPrincipal` is more private than the item `leak_dyn_nonprincipal`
 
 #[deny(missing_docs)]
 fn container() {
diff --git a/tests/ui/privacy/private-in-public-non-principal.stderr b/tests/ui/privacy/private-in-public-non-principal.stderr
index 1387f59cbde..63512f462f5 100644
--- a/tests/ui/privacy/private-in-public-non-principal.stderr
+++ b/tests/ui/privacy/private-in-public-non-principal.stderr
@@ -1,41 +1,27 @@
-warning: private trait `PrivNonPrincipal` in public interface (error E0445)
-  --> $DIR/private-in-public-non-principal.rs:13:1
-   |
-LL | pub fn leak_dyn_nonprincipal() -> Box<dyn PubPrincipal + PrivNonPrincipal> { loop {} }
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-   = note: `#[warn(private_in_public)]` on by default
-
-error: trait `PrivNonPrincipal` is more private than the item `leak_dyn_nonprincipal`
-  --> $DIR/private-in-public-non-principal.rs:13:1
+warning: trait `PrivNonPrincipal` is more private than the item `leak_dyn_nonprincipal`
+  --> $DIR/private-in-public-non-principal.rs:7:1
    |
 LL | pub fn leak_dyn_nonprincipal() -> Box<dyn PubPrincipal + PrivNonPrincipal> { loop {} }
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `leak_dyn_nonprincipal` is reachable at visibility `pub`
    |
 note: but trait `PrivNonPrincipal` is only usable at visibility `pub(crate)`
-  --> $DIR/private-in-public-non-principal.rs:11:1
+  --> $DIR/private-in-public-non-principal.rs:5:1
    |
 LL | auto trait PrivNonPrincipal {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/private-in-public-non-principal.rs:4:9
-   |
-LL | #![deny(private_interfaces)]
-   |         ^^^^^^^^^^^^^^^^^^
+   = note: `#[warn(private_interfaces)]` on by default
 
 error: missing documentation for an associated function
-  --> $DIR/private-in-public-non-principal.rs:21:9
+  --> $DIR/private-in-public-non-principal.rs:13:9
    |
 LL |         pub fn check_doc_lint() {}
    |         ^^^^^^^^^^^^^^^^^^^^^^^
    |
 note: the lint level is defined here
-  --> $DIR/private-in-public-non-principal.rs:18:8
+  --> $DIR/private-in-public-non-principal.rs:10:8
    |
 LL | #[deny(missing_docs)]
    |        ^^^^^^^^^^^^
 
-error: aborting due to 2 previous errors; 1 warning emitted
+error: aborting due to previous error; 1 warning emitted
 
diff --git a/tests/ui/privacy/private-in-public-type-alias-impl-trait.rs b/tests/ui/privacy/private-in-public-type-alias-impl-trait.rs
index fe6ed46734c..3fb543e9624 100644
--- a/tests/ui/privacy/private-in-public-type-alias-impl-trait.rs
+++ b/tests/ui/privacy/private-in-public-type-alias-impl-trait.rs
@@ -1,7 +1,7 @@
 // build-pass (FIXME(62277): could be check-pass?)
 #![feature(impl_trait_in_assoc_type)]
 #![feature(type_alias_impl_trait)]
-#![deny(private_in_public)]
+#![deny(private_interfaces, private_bounds)]
 
 pub type Pub = impl Default;
 
diff --git a/tests/ui/privacy/private-in-public-warn.rs b/tests/ui/privacy/private-in-public-warn.rs
index 0fa1de975b0..99d318e36be 100644
--- a/tests/ui/privacy/private-in-public-warn.rs
+++ b/tests/ui/privacy/private-in-public-warn.rs
@@ -2,7 +2,7 @@
 // This test also ensures that the checks are performed even inside private modules.
 
 #![feature(associated_type_defaults)]
-#![deny(private_in_public)]
+#![deny(private_interfaces, private_bounds)]
 #![allow(improper_ctypes)]
 
 mod types {
@@ -12,30 +12,21 @@ mod types {
         type Alias;
     }
 
-    pub type Alias = Priv; //~ ERROR private type `types::Priv` in public interface
-    //~^ WARNING hard error
+    pub type Alias = Priv; //~ ERROR type `types::Priv` is more private than the item `types::Alias`
     pub enum E {
-        V1(Priv), //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
-        V2 { field: Priv }, //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
+        V1(Priv), //~ ERROR type `types::Priv` is more private than the item `E::V1::0`
+        V2 { field: Priv }, //~ ERROR type `types::Priv` is more private than the item `E::V2::field`
     }
     pub trait Tr {
-        const C: Priv = Priv; //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
+        const C: Priv = Priv; //~ ERROR type `types::Priv` is more private than the item `Tr::C`
         type Alias = Priv; //~ ERROR private type `types::Priv` in public interface
-        fn f1(arg: Priv) {} //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
-        fn f2() -> Priv { panic!() } //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
+        fn f1(arg: Priv) {} //~ ERROR type `types::Priv` is more private than the item `Tr::f1`
+        fn f2() -> Priv { panic!() } //~ ERROR type `types::Priv` is more private than the item `Tr::f2`
     }
     extern "C" {
-        pub static ES: Priv; //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
-        pub fn ef1(arg: Priv); //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
-        pub fn ef2() -> Priv; //~ ERROR private type `types::Priv` in public interface
-        //~^ WARNING hard error
+        pub static ES: Priv; //~ ERROR type `types::Priv` is more private than the item `types::ES`
+        pub fn ef1(arg: Priv); //~ ERROR type `types::Priv` is more private than the item `types::ef1`
+        pub fn ef2() -> Priv; //~ ERROR type `types::Priv` is more private than the item `types::ef2`
     }
     impl PubTr for Pub {
         type Alias = Priv; //~ ERROR private type `types::Priv` in public interface
@@ -47,22 +38,16 @@ mod traits {
     pub struct Pub<T>(T);
     pub trait PubTr {}
 
-    pub type Alias<T: PrivTr> = T; //~ ERROR private trait `traits::PrivTr` in public interface
-    //~| WARNING hard error
-    //~| WARNING bounds on generic parameters are not enforced in type aliases
-    pub trait Tr1: PrivTr {} //~ ERROR private trait `traits::PrivTr` in public interface
-    //~^ WARNING hard error
-    pub trait Tr2<T: PrivTr> {} //~ ERROR private trait `traits::PrivTr` in public interface
-        //~^ WARNING hard error
+    pub type Alias<T: PrivTr> = T; //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Alias`
+    //~^ WARNING bounds on generic parameters are not enforced in type aliases
+    pub trait Tr1: PrivTr {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr1`
+    pub trait Tr2<T: PrivTr> {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr2`
     pub trait Tr3 {
         type Alias: PrivTr;
-        //~^ ERROR private trait `traits::PrivTr` in public interface
-        //~| WARNING hard error
-        fn f<T: PrivTr>(arg: T) {} //~ ERROR private trait `traits::PrivTr` in public interface
-        //~^ WARNING hard error
+        //~^ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr3::Alias`
+        fn f<T: PrivTr>(arg: T) {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Tr3::f`
     }
-    impl<T: PrivTr> Pub<T> {} //~ ERROR private trait `traits::PrivTr` in public interface
-        //~^ WARNING hard error
+    impl<T: PrivTr> Pub<T> {} //~ ERROR trait `traits::PrivTr` is more private than the item `traits::Pub<T>`
     impl<T: PrivTr> PubTr for Pub<T> {} // OK, trait impl predicates
 }
 
@@ -72,20 +57,16 @@ mod traits_where {
     pub trait PubTr {}
 
     pub type Alias<T> where T: PrivTr = T;
-        //~^ ERROR private trait `traits_where::PrivTr` in public interface
-        //~| WARNING hard error
+        //~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Alias`
         //~| WARNING where clauses are not enforced in type aliases
     pub trait Tr2<T> where T: PrivTr {}
-        //~^ ERROR private trait `traits_where::PrivTr` in public interface
-        //~| WARNING hard error
+        //~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Tr2`
     pub trait Tr3 {
         fn f<T>(arg: T) where T: PrivTr {}
-        //~^ ERROR private trait `traits_where::PrivTr` in public interface
-        //~| WARNING hard error
+        //~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Tr3::f`
     }
     impl<T> Pub<T> where T: PrivTr {}
-        //~^ ERROR private trait `traits_where::PrivTr` in public interface
-        //~| WARNING hard error
+        //~^ ERROR trait `traits_where::PrivTr` is more private than the item `traits_where::Pub<T>`
     impl<T> PubTr for Pub<T> where T: PrivTr {} // OK, trait impl predicates
 }
 
@@ -96,14 +77,10 @@ mod generics {
     pub trait PubTr<T> {}
 
     pub trait Tr1: PrivTr<Pub> {}
-        //~^ ERROR private trait `generics::PrivTr<generics::Pub>` in public interface
-        //~| WARNING hard error
-    pub trait Tr2: PubTr<Priv> {} //~ ERROR private type `generics::Priv` in public interface
-        //~^ WARNING hard error
-    pub trait Tr3: PubTr<[Priv; 1]> {} //~ ERROR private type `generics::Priv` in public interface
-        //~^ WARNING hard error
-    pub trait Tr4: PubTr<Pub<Priv>> {} //~ ERROR private type `generics::Priv` in public interface
-        //~^ WARNING hard error
+        //~^ ERROR trait `generics::PrivTr<generics::Pub>` is more private than the item `generics::Tr1`
+    pub trait Tr2: PubTr<Priv> {} //~ ERROR type `generics::Priv` is more private than the item `generics::Tr2`
+    pub trait Tr3: PubTr<[Priv; 1]> {} //~ ERROR type `generics::Priv` is more private than the item `generics::Tr3`
+    pub trait Tr4: PubTr<Pub<Priv>> {} //~ ERROR type `generics::Priv` is more private than the item `Tr4`
 }
 
 mod impls {
@@ -200,8 +177,7 @@ mod aliases_pub {
     pub trait Tr2: PrivUseAliasTr<PrivAlias> {} // OK
 
     impl PrivAlias {
-        pub fn f(arg: Priv) {} //~ ERROR private type `aliases_pub::Priv` in public interface
-        //~^ WARNING hard error
+        pub fn f(arg: Priv) {} //~ ERROR type `aliases_pub::Priv` is more private than the item `aliases_pub::<impl Pub2>::f`
     }
     impl PrivUseAliasTr for PrivUseAlias {
         type Check = Priv; //~ ERROR private type `aliases_pub::Priv` in public interface
@@ -244,13 +220,10 @@ mod aliases_priv {
     }
 
     pub trait Tr1: PrivUseAliasTr {}
-        //~^ ERROR private trait `PrivTr1` in public interface
-        //~| WARNING hard error
+        //~^ ERROR trait `PrivTr1` is more private than the item `aliases_priv::Tr1`
     pub trait Tr2: PrivUseAliasTr<PrivAlias> {}
-        //~^ ERROR private trait `PrivTr1<Priv2>` in public interface
-        //~| WARNING hard error
-        //~| ERROR private type `Priv2` in public interface
-        //~| WARNING hard error
+        //~^ ERROR trait `PrivTr1<Priv2>` is more private than the item `aliases_priv::Tr2`
+        //~| ERROR type `Priv2` is more private than the item `aliases_priv::Tr2`
 
     impl PrivUseAlias {
         pub fn f(arg: Priv) {} // OK
diff --git a/tests/ui/privacy/private-in-public-warn.stderr b/tests/ui/privacy/private-in-public-warn.stderr
index 66f91ce6fd6..6497b7ff535 100644
--- a/tests/ui/privacy/private-in-public-warn.stderr
+++ b/tests/ui/privacy/private-in-public-warn.stderr
@@ -1,46 +1,58 @@
-error: private type `types::Priv` in public interface (error E0446)
+error: type `types::Priv` is more private than the item `types::Alias`
   --> $DIR/private-in-public-warn.rs:15:5
    |
 LL |     pub type Alias = Priv;
-   |     ^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^ type alias `types::Alias` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 note: the lint level is defined here
   --> $DIR/private-in-public-warn.rs:5:9
    |
-LL | #![deny(private_in_public)]
-   |         ^^^^^^^^^^^^^^^^^
+LL | #![deny(private_interfaces, private_bounds)]
+   |         ^^^^^^^^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:18:12
+error: type `types::Priv` is more private than the item `E::V1::0`
+  --> $DIR/private-in-public-warn.rs:17:12
    |
 LL |         V1(Priv),
-   |            ^^^^
+   |            ^^^^ field `E::V1::0` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:20:14
+error: type `types::Priv` is more private than the item `E::V2::field`
+  --> $DIR/private-in-public-warn.rs:18:14
    |
 LL |         V2 { field: Priv },
-   |              ^^^^^^^^^^^
+   |              ^^^^^^^^^^^ field `E::V2::field` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:24:9
+error: type `types::Priv` is more private than the item `Tr::C`
+  --> $DIR/private-in-public-warn.rs:21:9
    |
 LL |         const C: Priv = Priv;
-   |         ^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^ associated constant `Tr::C` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
 error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:26:9
+  --> $DIR/private-in-public-warn.rs:22:9
    |
 LL |     struct Priv;
    |     ----------- `types::Priv` declared as private
@@ -48,53 +60,68 @@ LL |     struct Priv;
 LL |         type Alias = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:27:9
+error: type `types::Priv` is more private than the item `Tr::f1`
+  --> $DIR/private-in-public-warn.rs:23:9
    |
 LL |         fn f1(arg: Priv) {}
-   |         ^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^ associated function `Tr::f1` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:29:9
+error: type `types::Priv` is more private than the item `Tr::f2`
+  --> $DIR/private-in-public-warn.rs:24:9
    |
 LL |         fn f2() -> Priv { panic!() }
-   |         ^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^ associated function `Tr::f2` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:33:9
+error: type `types::Priv` is more private than the item `types::ES`
+  --> $DIR/private-in-public-warn.rs:27:9
    |
 LL |         pub static ES: Priv;
-   |         ^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^ static `types::ES` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:35:9
+error: type `types::Priv` is more private than the item `types::ef1`
+  --> $DIR/private-in-public-warn.rs:28:9
    |
 LL |         pub fn ef1(arg: Priv);
-   |         ^^^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^^^ function `types::ef1` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: private type `types::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:37:9
+error: type `types::Priv` is more private than the item `types::ef2`
+  --> $DIR/private-in-public-warn.rs:29:9
    |
 LL |         pub fn ef2() -> Priv;
-   |         ^^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^^ function `types::ef2` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:9:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
 error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:41:9
+  --> $DIR/private-in-public-warn.rs:32:9
    |
 LL |     struct Priv;
    |     ----------- `types::Priv` declared as private
@@ -102,134 +129,181 @@ LL |     struct Priv;
 LL |         type Alias = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
-error: private trait `traits::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:50:5
+error: trait `traits::PrivTr` is more private than the item `traits::Alias`
+  --> $DIR/private-in-public-warn.rs:41:5
    |
 LL |     pub type Alias<T: PrivTr> = T;
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ type alias `traits::Alias` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:37:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
+note: the lint level is defined here
+  --> $DIR/private-in-public-warn.rs:5:29
+   |
+LL | #![deny(private_interfaces, private_bounds)]
+   |                             ^^^^^^^^^^^^^^
 
-error: private trait `traits::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:53:5
+error: trait `traits::PrivTr` is more private than the item `traits::Tr1`
+  --> $DIR/private-in-public-warn.rs:43:5
    |
 LL |     pub trait Tr1: PrivTr {}
-   |     ^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^ trait `traits::Tr1` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:37:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:55:5
+error: trait `traits::PrivTr` is more private than the item `traits::Tr2`
+  --> $DIR/private-in-public-warn.rs:44:5
    |
 LL |     pub trait Tr2<T: PrivTr> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ trait `traits::Tr2` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:37:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:58:9
+error: trait `traits::PrivTr` is more private than the item `traits::Tr3::Alias`
+  --> $DIR/private-in-public-warn.rs:46:9
    |
 LL |         type Alias: PrivTr;
-   |         ^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^ associated type `traits::Tr3::Alias` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:37:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:61:9
+error: trait `traits::PrivTr` is more private than the item `traits::Tr3::f`
+  --> $DIR/private-in-public-warn.rs:48:9
    |
 LL |         fn f<T: PrivTr>(arg: T) {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^^^^^ associated function `traits::Tr3::f` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:37:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:64:5
+error: trait `traits::PrivTr` is more private than the item `traits::Pub<T>`
+  --> $DIR/private-in-public-warn.rs:50:5
    |
 LL |     impl<T: PrivTr> Pub<T> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^ implementation `traits::Pub<T>` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:37:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits_where::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:74:5
+error: trait `traits_where::PrivTr` is more private than the item `traits_where::Alias`
+  --> $DIR/private-in-public-warn.rs:59:5
    |
 LL |     pub type Alias<T> where T: PrivTr = T;
-   |     ^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^ type alias `traits_where::Alias` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:55:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits_where::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:78:5
+error: trait `traits_where::PrivTr` is more private than the item `traits_where::Tr2`
+  --> $DIR/private-in-public-warn.rs:62:5
    |
 LL |     pub trait Tr2<T> where T: PrivTr {}
-   |     ^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^ trait `traits_where::Tr2` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:55:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits_where::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:82:9
+error: trait `traits_where::PrivTr` is more private than the item `traits_where::Tr3::f`
+  --> $DIR/private-in-public-warn.rs:65:9
    |
 LL |         fn f<T>(arg: T) where T: PrivTr {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `traits_where::Tr3::f` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:55:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `traits_where::PrivTr` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:86:5
+error: trait `traits_where::PrivTr` is more private than the item `traits_where::Pub<T>`
+  --> $DIR/private-in-public-warn.rs:68:5
    |
 LL |     impl<T> Pub<T> where T: PrivTr {}
-   |     ^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^ implementation `traits_where::Pub<T>` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:55:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error: private trait `generics::PrivTr<generics::Pub>` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:98:5
+error: trait `generics::PrivTr<generics::Pub>` is more private than the item `generics::Tr1`
+  --> $DIR/private-in-public-warn.rs:79:5
    |
 LL |     pub trait Tr1: PrivTr<Pub> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `generics::Tr1` is reachable at visibility `pub(crate)`
+   |
+note: but trait `generics::PrivTr<generics::Pub>` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:76:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     trait PrivTr<T> {}
+   |     ^^^^^^^^^^^^^^^
 
-error: private type `generics::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:101:5
+error: type `generics::Priv` is more private than the item `generics::Tr2`
+  --> $DIR/private-in-public-warn.rs:81:5
    |
 LL |     pub trait Tr2: PubTr<Priv> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `generics::Tr2` is reachable at visibility `pub(crate)`
+   |
+note: but type `generics::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:74:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv<T = u8>(T);
+   |     ^^^^^^^^^^^^^^^^^^^
 
-error: private type `generics::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:103:5
+error: type `generics::Priv` is more private than the item `generics::Tr3`
+  --> $DIR/private-in-public-warn.rs:82:5
    |
 LL |     pub trait Tr3: PubTr<[Priv; 1]> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `generics::Tr3` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `generics::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:74:5
+   |
+LL |     struct Priv<T = u8>(T);
+   |     ^^^^^^^^^^^^^^^^^^^
 
-error: private type `generics::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:105:5
+error: type `generics::Priv` is more private than the item `Tr4`
+  --> $DIR/private-in-public-warn.rs:83:5
    |
 LL |     pub trait Tr4: PubTr<Pub<Priv>> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `Tr4` is reachable at visibility `pub(crate)`
+   |
+note: but type `generics::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:74:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv<T = u8>(T);
+   |     ^^^^^^^^^^^^^^^^^^^
 
 error[E0446]: private type `impls::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:132:9
+  --> $DIR/private-in-public-warn.rs:109:9
    |
 LL |     struct Priv;
    |     ----------- `impls::Priv` declared as private
@@ -237,17 +311,20 @@ LL |     struct Priv;
 LL |         type Alias = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
-error: private type `aliases_pub::Priv` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:203:9
+error: type `aliases_pub::Priv` is more private than the item `aliases_pub::<impl Pub2>::f`
+  --> $DIR/private-in-public-warn.rs:180:9
    |
 LL |         pub fn f(arg: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^^^
+   |         ^^^^^^^^^^^^^^^^^^^ associated function `aliases_pub::<impl Pub2>::f` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but type `aliases_pub::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:153:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
 error[E0446]: private type `aliases_pub::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:207:9
+  --> $DIR/private-in-public-warn.rs:183:9
    |
 LL |     struct Priv;
    |     ----------- `aliases_pub::Priv` declared as private
@@ -256,7 +333,7 @@ LL |         type Check = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
 error[E0446]: private type `aliases_pub::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:210:9
+  --> $DIR/private-in-public-warn.rs:186:9
    |
 LL |     struct Priv;
    |     ----------- `aliases_pub::Priv` declared as private
@@ -265,7 +342,7 @@ LL |         type Check = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
 error[E0446]: private type `aliases_pub::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:213:9
+  --> $DIR/private-in-public-warn.rs:189:9
    |
 LL |     struct Priv;
    |     ----------- `aliases_pub::Priv` declared as private
@@ -274,7 +351,7 @@ LL |         type Check = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
 error[E0446]: private type `aliases_pub::Priv` in public interface
-  --> $DIR/private-in-public-warn.rs:216:9
+  --> $DIR/private-in-public-warn.rs:192:9
    |
 LL |     struct Priv;
    |     ----------- `aliases_pub::Priv` declared as private
@@ -282,35 +359,44 @@ LL |     struct Priv;
 LL |         type Check = Priv;
    |         ^^^^^^^^^^ can't leak private type
 
-error: private trait `PrivTr1` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:246:5
+error: trait `PrivTr1` is more private than the item `aliases_priv::Tr1`
+  --> $DIR/private-in-public-warn.rs:222:5
    |
 LL |     pub trait Tr1: PrivUseAliasTr {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `aliases_priv::Tr1` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `PrivTr1` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:208:5
+   |
+LL |     trait PrivTr1<T = u8> {
+   |     ^^^^^^^^^^^^^^^^^^^^^
 
-error: private trait `PrivTr1<Priv2>` in public interface (error E0445)
-  --> $DIR/private-in-public-warn.rs:249:5
+error: trait `PrivTr1<Priv2>` is more private than the item `aliases_priv::Tr2`
+  --> $DIR/private-in-public-warn.rs:224:5
    |
 LL |     pub trait Tr2: PrivUseAliasTr<PrivAlias> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `aliases_priv::Tr2` is reachable at visibility `pub(crate)`
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+note: but trait `PrivTr1<Priv2>` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:208:5
+   |
+LL |     trait PrivTr1<T = u8> {
+   |     ^^^^^^^^^^^^^^^^^^^^^
 
-error: private type `Priv2` in public interface (error E0446)
-  --> $DIR/private-in-public-warn.rs:249:5
+error: type `Priv2` is more private than the item `aliases_priv::Tr2`
+  --> $DIR/private-in-public-warn.rs:224:5
    |
 LL |     pub trait Tr2: PrivUseAliasTr<PrivAlias> {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ trait `aliases_priv::Tr2` is reachable at visibility `pub(crate)`
+   |
+note: but type `Priv2` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public-warn.rs:206:5
    |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+LL |     struct Priv2;
+   |     ^^^^^^^^^^^^
 
 warning: bounds on generic parameters are not enforced in type aliases
-  --> $DIR/private-in-public-warn.rs:50:23
+  --> $DIR/private-in-public-warn.rs:41:23
    |
 LL |     pub type Alias<T: PrivTr> = T;
    |                       ^^^^^^
@@ -323,7 +409,7 @@ LL +     pub type Alias<T> = T;
    |
 
 warning: where clauses are not enforced in type aliases
-  --> $DIR/private-in-public-warn.rs:74:29
+  --> $DIR/private-in-public-warn.rs:59:29
    |
 LL |     pub type Alias<T> where T: PrivTr = T;
    |                             ^^^^^^^^^
diff --git a/tests/ui/privacy/private-in-public.rs b/tests/ui/privacy/private-in-public.rs
index dbd1c483f81..f54f9e38faa 100644
--- a/tests/ui/privacy/private-in-public.rs
+++ b/tests/ui/privacy/private-in-public.rs
@@ -1,3 +1,5 @@
+// check-pass
+
 // Private types and traits are not allowed in public interfaces.
 // This test also ensures that the checks are performed even inside private modules.
 
@@ -10,16 +12,16 @@ mod types {
         type Alias;
     }
 
-    pub const C: Priv = Priv; //~ ERROR private type `types::Priv` in public interface
-    pub static S: Priv = Priv; //~ ERROR private type `types::Priv` in public interface
-    pub fn f1(arg: Priv) {} //~ ERROR private type `types::Priv` in public interface
-    pub fn f2() -> Priv { panic!() } //~ ERROR private type `types::Priv` in public interface
-    pub struct S1(pub Priv); //~ ERROR private type `types::Priv` in public interface
-    pub struct S2 { pub field: Priv } //~ ERROR private type `types::Priv` in public interface
+    pub const C: Priv = Priv; //~ WARNING type `types::Priv` is more private than the item `C`
+    pub static S: Priv = Priv; //~ WARNING type `types::Priv` is more private than the item `S`
+    pub fn f1(arg: Priv) {} //~ WARNING `types::Priv` is more private than the item `types::f1`
+    pub fn f2() -> Priv { panic!() } //~ WARNING type `types::Priv` is more private than the item `types::f2`
+    pub struct S1(pub Priv); //~ WARNING type `types::Priv` is more private than the item `types::S1::0`
+    pub struct S2 { pub field: Priv } //~ WARNING `types::Priv` is more private than the item `S2::field`
     impl Pub {
-        pub const C: Priv = Priv; //~ ERROR private type `types::Priv` in public interface
-        pub fn f1(arg: Priv) {} //~ ERROR private type `types::Priv` in public interface
-        pub fn f2() -> Priv { panic!() } //~ ERROR private type `types::Priv` in public interface
+        pub const C: Priv = Priv; //~ WARNING type `types::Priv` is more private than the item `types::Pub::C`
+        pub fn f1(arg: Priv) {} //~ WARNING type `types::Priv` is more private than the item `types::Pub::f1`
+        pub fn f2() -> Priv { panic!() } //~ WARNING type `types::Priv` is more private than the item `types::Pub::f2`
     }
 }
 
@@ -28,11 +30,11 @@ mod traits {
     pub struct Pub<T>(T);
     pub trait PubTr {}
 
-    pub enum E<T: PrivTr> { V(T) } //~ ERROR private trait `traits::PrivTr` in public interface
-    pub fn f<T: PrivTr>(arg: T) {} //~ ERROR private trait `traits::PrivTr` in public interface
-    pub struct S1<T: PrivTr>(T); //~ ERROR private trait `traits::PrivTr` in public interface
-    impl<T: PrivTr> Pub<T> { //~ ERROR private trait `traits::PrivTr` in public interface
-        pub fn f<U: PrivTr>(arg: U) {} //~ ERROR private trait `traits::PrivTr` in public interface
+    pub enum E<T: PrivTr> { V(T) } //~ WARNING trait `traits::PrivTr` is more private than the item `traits::E`
+    pub fn f<T: PrivTr>(arg: T) {} //~ WARNING trait `traits::PrivTr` is more private than the item `traits::f`
+    pub struct S1<T: PrivTr>(T); //~ WARNING trait `traits::PrivTr` is more private than the item `traits::S1`
+    impl<T: PrivTr> Pub<T> { //~ WARNING trait `traits::PrivTr` is more private than the item `traits::Pub<T>`
+        pub fn f<U: PrivTr>(arg: U) {} //~ WARNING trait `traits::PrivTr` is more private than the item `traits::Pub::<T>::f`
     }
 }
 
@@ -42,15 +44,15 @@ mod traits_where {
     pub trait PubTr {}
 
     pub enum E<T> where T: PrivTr { V(T) }
-    //~^ ERROR private trait `traits_where::PrivTr` in public interface
+    //~^ WARNING trait `traits_where::PrivTr` is more private than the item `traits_where::E`
     pub fn f<T>(arg: T) where T: PrivTr {}
-    //~^ ERROR private trait `traits_where::PrivTr` in public interface
+    //~^ WARNING trait `traits_where::PrivTr` is more private than the item `traits_where::f`
     pub struct S1<T>(T) where T: PrivTr;
-    //~^ ERROR private trait `traits_where::PrivTr` in public interface
+    //~^ WARNING trait `traits_where::PrivTr` is more private than the item `traits_where::S1`
     impl<T> Pub<T> where T: PrivTr {
-    //~^ ERROR private trait `traits_where::PrivTr` in public interface
+    //~^ WARNING trait `traits_where::PrivTr` is more private than the item `traits_where::Pub<T>`
         pub fn f<U>(arg: U) where U: PrivTr {}
-        //~^ ERROR private trait `traits_where::PrivTr` in public interface
+        //~^ WARNING trait `traits_where::PrivTr` is more private than the item `traits_where::Pub::<T>::f`
     }
 }
 
@@ -60,10 +62,10 @@ mod generics {
     trait PrivTr<T> {}
     pub trait PubTr<T> {}
 
-    pub fn f1(arg: [Priv; 1]) {} //~ ERROR private type `generics::Priv` in public interface
-    pub fn f2(arg: Pub<Priv>) {} //~ ERROR private type `generics::Priv` in public interface
+    pub fn f1(arg: [Priv; 1]) {} //~ WARNING type `generics::Priv` is more private than the item `generics::f1`
+    pub fn f2(arg: Pub<Priv>) {} //~ WARNING type `generics::Priv` is more private than the item `generics::f2`
     pub fn f3(arg: Priv<Pub>) {}
-    //~^ ERROR private type `generics::Priv<generics::Pub>` in public interface
+    //~^ WARNING type `generics::Priv<generics::Pub>` is more private than the item `generics::f3`
 }
 
 mod impls {
@@ -77,7 +79,7 @@ mod impls {
     }
 
     impl Pub {
-        pub fn f(arg: Priv) {} //~ ERROR private type `impls::Priv` in public interface
+        pub fn f(arg: Priv) {} //~ WARNING type `impls::Priv` is more private than the item `impls::Pub::f`
     }
 }
 
@@ -102,11 +104,11 @@ mod aliases_pub {
 
     // This should be OK, but associated type aliases are not substituted yet
     pub fn f3(arg: <Priv as PrivTr>::Assoc) {}
-    //~^ ERROR private trait `aliases_pub::PrivTr` in public interface
-    //~| ERROR private type `aliases_pub::Priv` in public interface
+    //~^ WARNING trait `aliases_pub::PrivTr` is more private than the item `aliases_pub::f3`
+    //~| WARNING type `aliases_pub::Priv` is more private than the item `aliases_pub::f3`
 
     impl PrivUseAlias {
-        pub fn f(arg: Priv) {} //~ ERROR private type `aliases_pub::Priv` in public interface
+        pub fn f(arg: Priv) {}
     }
 }
 
@@ -128,11 +130,11 @@ mod aliases_priv {
     }
     impl PrivTr for Priv {}
 
-    pub fn f1(arg: PrivUseAlias) {} //~ ERROR private type `Priv1` in public interface
-    pub fn f2(arg: PrivAlias) {} //~ ERROR private type `Priv2` in public interface
+    pub fn f1(arg: PrivUseAlias) {} //~ WARNING type `Priv1` is more private than the item `aliases_priv::f1`
+    pub fn f2(arg: PrivAlias) {} //~ WARNING type `Priv2` is more private than the item `aliases_priv::f2`
     pub fn f3(arg: <Priv as PrivTr>::Assoc) {}
-    //~^ ERROR private trait `aliases_priv::PrivTr` in public interface
-    //~| ERROR private type `aliases_priv::Priv` in public interface
+    //~^ WARNING trait `aliases_priv::PrivTr` is more private than the item `aliases_priv::f3`
+    //~| WARNING type `aliases_priv::Priv` is more private than the item `aliases_priv::f3`
 }
 
 mod aliases_params {
@@ -141,8 +143,8 @@ mod aliases_params {
     type Result<T> = ::std::result::Result<T, Priv>;
 
     pub fn f2(arg: PrivAliasGeneric) {}
-    //~^ ERROR private type `aliases_params::Priv` in public interface
-    pub fn f3(arg: Result<u8>) {} //~ ERROR private type `aliases_params::Priv` in public interface
+    //~^ WARNING type `aliases_params::Priv` is more private than the item `aliases_params::f2`
+    pub fn f3(arg: Result<u8>) {} //~ WARNING type `aliases_params::Priv` is more private than the item `aliases_params::f3`
 }
 
 fn main() {}
diff --git a/tests/ui/privacy/private-in-public.stderr b/tests/ui/privacy/private-in-public.stderr
index 887eebf53ef..d8f9fd00716 100644
--- a/tests/ui/privacy/private-in-public.stderr
+++ b/tests/ui/privacy/private-in-public.stderr
@@ -1,292 +1,376 @@
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:13:5
+warning: type `types::Priv` is more private than the item `C`
+  --> $DIR/private-in-public.rs:15:5
    |
-LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
 LL |     pub const C: Priv = Priv;
-   |     ^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:14:5
+   |     ^^^^^^^^^^^^^^^^^ constant `C` is reachable at visibility `pub(crate)`
    |
-LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |     pub static S: Priv = Priv;
-   |     ^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:15:5
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
    |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |     pub fn f1(arg: Priv) {}
-   |     ^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
+   = note: `#[warn(private_interfaces)]` on by default
 
-error[E0446]: private type `types::Priv` in public interface
+warning: type `types::Priv` is more private than the item `S`
   --> $DIR/private-in-public.rs:16:5
    |
+LL |     pub static S: Priv = Priv;
+   |     ^^^^^^^^^^^^^^^^^^ static `S` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
+   |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |     pub fn f2() -> Priv { panic!() }
-   |     ^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:17:19
+warning: type `types::Priv` is more private than the item `types::f1`
+  --> $DIR/private-in-public.rs:17:5
+   |
+LL |     pub fn f1(arg: Priv) {}
+   |     ^^^^^^^^^^^^^^^^^^^^ function `types::f1` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
    |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |     pub struct S1(pub Priv);
-   |                   ^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:18:21
+warning: type `types::Priv` is more private than the item `types::f2`
+  --> $DIR/private-in-public.rs:18:5
+   |
+LL |     pub fn f2() -> Priv { panic!() }
+   |     ^^^^^^^^^^^^^^^^^^^ function `types::f2` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
    |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |     pub struct S2 { pub field: Priv }
-   |                     ^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:20:9
+warning: type `types::Priv` is more private than the item `types::S1::0`
+  --> $DIR/private-in-public.rs:19:19
+   |
+LL |     pub struct S1(pub Priv);
+   |                   ^^^^^^^^ field `types::S1::0` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
    |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |         pub const C: Priv = Priv;
-   |         ^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `types::Priv` in public interface
-  --> $DIR/private-in-public.rs:21:9
+warning: type `types::Priv` is more private than the item `S2::field`
+  --> $DIR/private-in-public.rs:20:21
+   |
+LL |     pub struct S2 { pub field: Priv }
+   |                     ^^^^^^^^^^^^^^^ field `S2::field` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
    |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |         pub fn f1(arg: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `types::Priv` in public interface
+warning: type `types::Priv` is more private than the item `types::Pub::C`
   --> $DIR/private-in-public.rs:22:9
    |
+LL |         pub const C: Priv = Priv;
+   |         ^^^^^^^^^^^^^^^^^ associated constant `types::Pub::C` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
+   |
 LL |     struct Priv;
-   |     ----------- `types::Priv` declared as private
-...
-LL |         pub fn f2() -> Priv { panic!() }
-   |         ^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0445]: private trait `traits::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:31:5
+warning: type `types::Priv` is more private than the item `types::Pub::f1`
+  --> $DIR/private-in-public.rs:23:9
    |
-LL |     trait PrivTr {}
-   |     ------------ `traits::PrivTr` declared as private
-...
-LL |     pub enum E<T: PrivTr> { V(T) }
-   |     ^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+LL |         pub fn f1(arg: Priv) {}
+   |         ^^^^^^^^^^^^^^^^^^^^ associated function `types::Pub::f1` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error[E0445]: private trait `traits::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:32:5
+warning: type `types::Priv` is more private than the item `types::Pub::f2`
+  --> $DIR/private-in-public.rs:24:9
    |
-LL |     trait PrivTr {}
-   |     ------------ `traits::PrivTr` declared as private
-...
-LL |     pub fn f<T: PrivTr>(arg: T) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+LL |         pub fn f2() -> Priv { panic!() }
+   |         ^^^^^^^^^^^^^^^^^^^ associated function `types::Pub::f2` is reachable at visibility `pub(crate)`
+   |
+note: but type `types::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:9:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error[E0445]: private trait `traits::PrivTr` in public interface
+warning: trait `traits::PrivTr` is more private than the item `traits::E`
   --> $DIR/private-in-public.rs:33:5
    |
+LL |     pub enum E<T: PrivTr> { V(T) }
+   |     ^^^^^^^^^^^^^^^^^^^^^ enum `traits::E` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:29:5
+   |
 LL |     trait PrivTr {}
-   |     ------------ `traits::PrivTr` declared as private
-...
-LL |     pub struct S1<T: PrivTr>(T);
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
+   = note: `#[warn(private_bounds)]` on by default
 
-error[E0445]: private trait `traits::PrivTr` in public interface
+warning: trait `traits::PrivTr` is more private than the item `traits::f`
   --> $DIR/private-in-public.rs:34:5
    |
+LL |     pub fn f<T: PrivTr>(arg: T) {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `traits::f` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:29:5
+   |
 LL |     trait PrivTr {}
-   |     ------------ `traits::PrivTr` declared as private
-...
-LL |     impl<T: PrivTr> Pub<T> {
-   |     ^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `traits::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:35:9
+warning: trait `traits::PrivTr` is more private than the item `traits::S1`
+  --> $DIR/private-in-public.rs:35:5
+   |
+LL |     pub struct S1<T: PrivTr>(T);
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^ struct `traits::S1` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:29:5
    |
 LL |     trait PrivTr {}
-   |     ------------ `traits::PrivTr` declared as private
-...
-LL |         pub fn f<U: PrivTr>(arg: U) {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `traits_where::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:44:5
+warning: trait `traits::PrivTr` is more private than the item `traits::Pub<T>`
+  --> $DIR/private-in-public.rs:36:5
+   |
+LL |     impl<T: PrivTr> Pub<T> {
+   |     ^^^^^^^^^^^^^^^^^^^^^^ implementation `traits::Pub<T>` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:29:5
    |
 LL |     trait PrivTr {}
-   |     ------------ `traits_where::PrivTr` declared as private
-...
-LL |     pub enum E<T> where T: PrivTr { V(T) }
-   |     ^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `traits_where::PrivTr` in public interface
+warning: trait `traits::PrivTr` is more private than the item `traits::Pub::<T>::f`
+  --> $DIR/private-in-public.rs:37:9
+   |
+LL |         pub fn f<U: PrivTr>(arg: U) {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `traits::Pub::<T>::f` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:29:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
+
+warning: trait `traits_where::PrivTr` is more private than the item `traits_where::E`
   --> $DIR/private-in-public.rs:46:5
    |
+LL |     pub enum E<T> where T: PrivTr { V(T) }
+   |     ^^^^^^^^^^^^^ enum `traits_where::E` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:42:5
+   |
 LL |     trait PrivTr {}
-   |     ------------ `traits_where::PrivTr` declared as private
-...
-LL |     pub fn f<T>(arg: T) where T: PrivTr {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `traits_where::PrivTr` in public interface
+warning: trait `traits_where::PrivTr` is more private than the item `traits_where::f`
   --> $DIR/private-in-public.rs:48:5
    |
+LL |     pub fn f<T>(arg: T) where T: PrivTr {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `traits_where::f` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:42:5
+   |
 LL |     trait PrivTr {}
-   |     ------------ `traits_where::PrivTr` declared as private
-...
-LL |     pub struct S1<T>(T) where T: PrivTr;
-   |     ^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `traits_where::PrivTr` in public interface
+warning: trait `traits_where::PrivTr` is more private than the item `traits_where::S1`
   --> $DIR/private-in-public.rs:50:5
    |
+LL |     pub struct S1<T>(T) where T: PrivTr;
+   |     ^^^^^^^^^^^^^^^^ struct `traits_where::S1` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:42:5
+   |
 LL |     trait PrivTr {}
-   |     ------------ `traits_where::PrivTr` declared as private
-...
-LL |     impl<T> Pub<T> where T: PrivTr {
-   |     ^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `traits_where::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:52:9
+warning: trait `traits_where::PrivTr` is more private than the item `traits_where::Pub<T>`
+  --> $DIR/private-in-public.rs:52:5
+   |
+LL |     impl<T> Pub<T> where T: PrivTr {
+   |     ^^^^^^^^^^^^^^ implementation `traits_where::Pub<T>` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:42:5
    |
 LL |     trait PrivTr {}
-   |     ------------ `traits_where::PrivTr` declared as private
-...
+   |     ^^^^^^^^^^^^
+
+warning: trait `traits_where::PrivTr` is more private than the item `traits_where::Pub::<T>::f`
+  --> $DIR/private-in-public.rs:54:9
+   |
 LL |         pub fn f<U>(arg: U) where U: PrivTr {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ associated function `traits_where::Pub::<T>::f` is reachable at visibility `pub(crate)`
+   |
+note: but trait `traits_where::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:42:5
+   |
+LL |     trait PrivTr {}
+   |     ^^^^^^^^^^^^
 
-error[E0446]: private type `generics::Priv` in public interface
-  --> $DIR/private-in-public.rs:63:5
+warning: type `generics::Priv` is more private than the item `generics::f1`
+  --> $DIR/private-in-public.rs:65:5
    |
-LL |     struct Priv<T = u8>(T);
-   |     ------------------- `generics::Priv` declared as private
-...
 LL |     pub fn f1(arg: [Priv; 1]) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `generics::Priv` in public interface
-  --> $DIR/private-in-public.rs:64:5
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ function `generics::f1` is reachable at visibility `pub(crate)`
+   |
+note: but type `generics::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:60:5
    |
 LL |     struct Priv<T = u8>(T);
-   |     ------------------- `generics::Priv` declared as private
-...
-LL |     pub fn f2(arg: Pub<Priv>) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^^^^^^^^^
 
-error[E0446]: private type `generics::Priv<generics::Pub>` in public interface
-  --> $DIR/private-in-public.rs:65:5
+warning: type `generics::Priv` is more private than the item `generics::f2`
+  --> $DIR/private-in-public.rs:66:5
+   |
+LL |     pub fn f2(arg: Pub<Priv>) {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ function `generics::f2` is reachable at visibility `pub(crate)`
+   |
+note: but type `generics::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:60:5
    |
 LL |     struct Priv<T = u8>(T);
-   |     ------------------- `generics::Priv<generics::Pub>` declared as private
-...
+   |     ^^^^^^^^^^^^^^^^^^^
+
+warning: type `generics::Priv<generics::Pub>` is more private than the item `generics::f3`
+  --> $DIR/private-in-public.rs:67:5
+   |
 LL |     pub fn f3(arg: Priv<Pub>) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ function `generics::f3` is reachable at visibility `pub(crate)`
+   |
+note: but type `generics::Priv<generics::Pub>` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:60:5
+   |
+LL |     struct Priv<T = u8>(T);
+   |     ^^^^^^^^^^^^^^^^^^^
 
-error[E0446]: private type `impls::Priv` in public interface
-  --> $DIR/private-in-public.rs:80:9
+warning: type `impls::Priv` is more private than the item `impls::Pub::f`
+  --> $DIR/private-in-public.rs:82:9
    |
-LL |     struct Priv;
-   |     ----------- `impls::Priv` declared as private
-...
 LL |         pub fn f(arg: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |         ^^^^^^^^^^^^^^^^^^^ associated function `impls::Pub::f` is reachable at visibility `pub(crate)`
+   |
+note: but type `impls::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:72:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error[E0445]: private trait `aliases_pub::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:104:5
+warning: trait `aliases_pub::PrivTr` is more private than the item `aliases_pub::f3`
+  --> $DIR/private-in-public.rs:106:5
    |
-LL |     trait PrivTr {
-   |     ------------ `aliases_pub::PrivTr` declared as private
-...
 LL |     pub fn f3(arg: <Priv as PrivTr>::Assoc) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_pub::f3` is reachable at visibility `pub(crate)`
+   |
+note: but trait `aliases_pub::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:100:5
+   |
+LL |     trait PrivTr {
+   |     ^^^^^^^^^^^^
 
-error[E0446]: private type `aliases_pub::Priv` in public interface
-  --> $DIR/private-in-public.rs:104:5
+warning: type `aliases_pub::Priv` is more private than the item `aliases_pub::f3`
+  --> $DIR/private-in-public.rs:106:5
    |
-LL |     struct Priv;
-   |     ----------- `aliases_pub::Priv` declared as private
-...
 LL |     pub fn f3(arg: <Priv as PrivTr>::Assoc) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `aliases_pub::Priv` in public interface
-  --> $DIR/private-in-public.rs:109:9
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_pub::f3` is reachable at visibility `pub(crate)`
+   |
+note: but type `aliases_pub::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:87:5
    |
 LL |     struct Priv;
-   |     ----------- `aliases_pub::Priv` declared as private
-...
-LL |         pub fn f(arg: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `Priv1` in public interface
-  --> $DIR/private-in-public.rs:131:5
+warning: type `Priv1` is more private than the item `aliases_priv::f1`
+  --> $DIR/private-in-public.rs:133:5
    |
-LL |     struct Priv1;
-   |     ------------ `Priv1` declared as private
-...
 LL |     pub fn f1(arg: PrivUseAlias) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_priv::f1` is reachable at visibility `pub(crate)`
+   |
+note: but type `Priv1` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:118:5
+   |
+LL |     struct Priv1;
+   |     ^^^^^^^^^^^^
 
-error[E0446]: private type `Priv2` in public interface
-  --> $DIR/private-in-public.rs:132:5
+warning: type `Priv2` is more private than the item `aliases_priv::f2`
+  --> $DIR/private-in-public.rs:134:5
    |
-LL |     struct Priv2;
-   |     ------------ `Priv2` declared as private
-...
 LL |     pub fn f2(arg: PrivAlias) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_priv::f2` is reachable at visibility `pub(crate)`
+   |
+note: but type `Priv2` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:119:5
+   |
+LL |     struct Priv2;
+   |     ^^^^^^^^^^^^
 
-error[E0445]: private trait `aliases_priv::PrivTr` in public interface
-  --> $DIR/private-in-public.rs:133:5
+warning: trait `aliases_priv::PrivTr` is more private than the item `aliases_priv::f3`
+  --> $DIR/private-in-public.rs:135:5
    |
-LL |     trait PrivTr {
-   |     ------------ `aliases_priv::PrivTr` declared as private
-...
 LL |     pub fn f3(arg: <Priv as PrivTr>::Assoc) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private trait
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_priv::f3` is reachable at visibility `pub(crate)`
+   |
+note: but trait `aliases_priv::PrivTr` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:128:5
+   |
+LL |     trait PrivTr {
+   |     ^^^^^^^^^^^^
 
-error[E0446]: private type `aliases_priv::Priv` in public interface
-  --> $DIR/private-in-public.rs:133:5
+warning: type `aliases_priv::Priv` is more private than the item `aliases_priv::f3`
+  --> $DIR/private-in-public.rs:135:5
    |
-LL |     struct Priv;
-   |     ----------- `aliases_priv::Priv` declared as private
-...
 LL |     pub fn f3(arg: <Priv as PrivTr>::Assoc) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `aliases_params::Priv` in public interface
-  --> $DIR/private-in-public.rs:143:5
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_priv::f3` is reachable at visibility `pub(crate)`
+   |
+note: but type `aliases_priv::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:116:5
    |
 LL |     struct Priv;
-   |     ----------- `aliases_params::Priv` declared as private
-...
-LL |     pub fn f2(arg: PrivAliasGeneric) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^
 
-error[E0446]: private type `aliases_params::Priv` in public interface
+warning: type `aliases_params::Priv` is more private than the item `aliases_params::f2`
   --> $DIR/private-in-public.rs:145:5
    |
+LL |     pub fn f2(arg: PrivAliasGeneric) {}
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_params::f2` is reachable at visibility `pub(crate)`
+   |
+note: but type `aliases_params::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:141:5
+   |
 LL |     struct Priv;
-   |     ----------- `aliases_params::Priv` declared as private
-...
+   |     ^^^^^^^^^^^
+
+warning: type `aliases_params::Priv` is more private than the item `aliases_params::f3`
+  --> $DIR/private-in-public.rs:147:5
+   |
 LL |     pub fn f3(arg: Result<u8>) {}
-   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^ function `aliases_params::f3` is reachable at visibility `pub(crate)`
+   |
+note: but type `aliases_params::Priv` is only usable at visibility `pub(self)`
+  --> $DIR/private-in-public.rs:141:5
+   |
+LL |     struct Priv;
+   |     ^^^^^^^^^^^
 
-error: aborting due to 32 previous errors
+warning: 31 warnings emitted
 
-Some errors have detailed explanations: E0445, E0446.
-For more information about an error, try `rustc --explain E0445`.
diff --git a/tests/ui/privacy/private-inferred-type-2.rs b/tests/ui/privacy/private-inferred-type-2.rs
index 15b263b3814..1c4c52bea28 100644
--- a/tests/ui/privacy/private-inferred-type-2.rs
+++ b/tests/ui/privacy/private-inferred-type-2.rs
@@ -1,4 +1,5 @@
 // aux-build:private-inferred-type.rs
+#![allow(private_interfaces)]
 
 extern crate private_inferred_type as ext;
 
diff --git a/tests/ui/privacy/private-inferred-type-2.stderr b/tests/ui/privacy/private-inferred-type-2.stderr
index 3a0fc03b4d5..8a905f5d88a 100644
--- a/tests/ui/privacy/private-inferred-type-2.stderr
+++ b/tests/ui/privacy/private-inferred-type-2.stderr
@@ -1,17 +1,17 @@
 error: type `Priv` is private
-  --> $DIR/private-inferred-type-2.rs:16:5
+  --> $DIR/private-inferred-type-2.rs:17:5
    |
 LL |     m::Pub::get_priv;
    |     ^^^^^^^^^^^^^^^^ private type
 
 error: type `Priv` is private
-  --> $DIR/private-inferred-type-2.rs:17:5
+  --> $DIR/private-inferred-type-2.rs:18:5
    |
 LL |     m::Pub::static_method;
    |     ^^^^^^^^^^^^^^^^^^^^^ private type
 
 error: type `ext::Priv` is private
-  --> $DIR/private-inferred-type-2.rs:18:5
+  --> $DIR/private-inferred-type-2.rs:19:5
    |
 LL |     ext::Pub::static_method;
    |     ^^^^^^^^^^^^^^^^^^^^^^^ private type
diff --git a/tests/ui/privacy/private-inferred-type.rs b/tests/ui/privacy/private-inferred-type.rs
index e8743dd968f..8c07226fe0e 100644
--- a/tests/ui/privacy/private-inferred-type.rs
+++ b/tests/ui/privacy/private-inferred-type.rs
@@ -1,5 +1,5 @@
 #![feature(decl_macro)]
-#![allow(private_in_public)]
+#![allow(private_interfaces)]
 
 mod m {
     fn priv_fn() {}
diff --git a/tests/ui/privacy/private-type-in-interface.rs b/tests/ui/privacy/private-type-in-interface.rs
index 7fbdbaf5f31..39e0bf23cac 100644
--- a/tests/ui/privacy/private-type-in-interface.rs
+++ b/tests/ui/privacy/private-type-in-interface.rs
@@ -1,6 +1,7 @@
 // aux-build:private-inferred-type.rs
 
 #![allow(warnings)]
+#![allow(private_interfaces)]
 
 extern crate private_inferred_type as ext;
 
diff --git a/tests/ui/privacy/private-type-in-interface.stderr b/tests/ui/privacy/private-type-in-interface.stderr
index 4e87caa3415..03225d84fdb 100644
--- a/tests/ui/privacy/private-type-in-interface.stderr
+++ b/tests/ui/privacy/private-type-in-interface.stderr
@@ -1,53 +1,53 @@
 error: type `Priv` is private
-  --> $DIR/private-type-in-interface.rs:15:9
+  --> $DIR/private-type-in-interface.rs:16:9
    |
 LL | fn f(_: m::Alias) {}
    |         ^^^^^^^^ private type
 
 error: type `Priv` is private
-  --> $DIR/private-type-in-interface.rs:15:6
+  --> $DIR/private-type-in-interface.rs:16:6
    |
 LL | fn f(_: m::Alias) {}
    |      ^ private type
 
 error: type `ext::Priv` is private
-  --> $DIR/private-type-in-interface.rs:17:13
+  --> $DIR/private-type-in-interface.rs:18:13
    |
 LL | fn f_ext(_: ext::Alias) {}
    |             ^^^^^^^^^^ private type
 
 error: type `ext::Priv` is private
-  --> $DIR/private-type-in-interface.rs:17:10
+  --> $DIR/private-type-in-interface.rs:18:10
    |
 LL | fn f_ext(_: ext::Alias) {}
    |          ^ private type
 
 error: type `Priv` is private
-  --> $DIR/private-type-in-interface.rs:21:6
+  --> $DIR/private-type-in-interface.rs:22:6
    |
 LL | impl m::Alias {}
    |      ^^^^^^^^ private type
 
 error: type `ext::Priv` is private
-  --> $DIR/private-type-in-interface.rs:22:14
+  --> $DIR/private-type-in-interface.rs:23:14
    |
 LL | impl Tr1 for ext::Alias {}
    |              ^^^^^^^^^^ private type
 
 error: type `Priv` is private
-  --> $DIR/private-type-in-interface.rs:23:10
+  --> $DIR/private-type-in-interface.rs:24:10
    |
 LL | type A = <m::Alias as m::Trait>::X;
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ private type
 
 error: type `Priv` is private
-  --> $DIR/private-type-in-interface.rs:27:11
+  --> $DIR/private-type-in-interface.rs:28:11
    |
 LL | fn g() -> impl Tr2<m::Alias> { 0 }
    |           ^^^^^^^^^^^^^^^^^^ private type
 
 error: type `ext::Priv` is private
-  --> $DIR/private-type-in-interface.rs:28:15
+  --> $DIR/private-type-in-interface.rs:29:15
    |
 LL | fn g_ext() -> impl Tr2<ext::Alias> { 0 }
    |               ^^^^^^^^^^^^^^^^^^^^ private type
diff --git a/tests/ui/privacy/restricted/private-in-public.rs b/tests/ui/privacy/restricted/private-in-public.rs
index 1e3dbdf73b9..80a7e6ad0a7 100644
--- a/tests/ui/privacy/restricted/private-in-public.rs
+++ b/tests/ui/privacy/restricted/private-in-public.rs
@@ -1,10 +1,11 @@
+// check-pass
 mod foo {
     struct Priv;
     mod bar {
         use foo::Priv;
         pub(super) fn f(_: Priv) {}
-        pub(crate) fn g(_: Priv) {} //~ ERROR E0446
-        pub(crate) fn h(_: Priv) {} //~ ERROR E0446
+        pub(crate) fn g(_: Priv) {}
+        pub(crate) fn h(_: Priv) {}
     }
 }
 
diff --git a/tests/ui/privacy/restricted/private-in-public.stderr b/tests/ui/privacy/restricted/private-in-public.stderr
deleted file mode 100644
index 65d996f0f07..00000000000
--- a/tests/ui/privacy/restricted/private-in-public.stderr
+++ /dev/null
@@ -1,21 +0,0 @@
-error[E0446]: private type `Priv` in public interface
-  --> $DIR/private-in-public.rs:6:9
-   |
-LL |     struct Priv;
-   |     ----------- `Priv` declared as private
-...
-LL |         pub(crate) fn g(_: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error[E0446]: private type `Priv` in public interface
-  --> $DIR/private-in-public.rs:7:9
-   |
-LL |     struct Priv;
-   |     ----------- `Priv` declared as private
-...
-LL |         pub(crate) fn h(_: Priv) {}
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/privacy/unnameable_types.rs b/tests/ui/privacy/unnameable_types.rs
index 46e24915259..c6c5561c3c4 100644
--- a/tests/ui/privacy/unnameable_types.rs
+++ b/tests/ui/privacy/unnameable_types.rs
@@ -1,5 +1,4 @@
 #![feature(type_privacy_lints)]
-#![allow(private_in_public)]
 #![deny(unnameable_types)]
 
 mod m {
@@ -21,10 +20,10 @@ mod m {
     }
 }
 
-pub trait Voldemort<T> {}
+pub trait Unnameable<T> {}
 
-impl Voldemort<m::PubStruct> for i32 {}
-impl Voldemort<m::PubE> for i32 {}
-impl<T> Voldemort<T> for u32 where T: m::PubTr {}
+impl Unnameable<m::PubStruct> for i32 {}
+impl Unnameable<m::PubE> for i32 {}
+impl<T> Unnameable<T> for u32 where T: m::PubTr {}
 
 fn main() {}
diff --git a/tests/ui/privacy/unnameable_types.stderr b/tests/ui/privacy/unnameable_types.stderr
index 90412752575..d68a11c9728 100644
--- a/tests/ui/privacy/unnameable_types.stderr
+++ b/tests/ui/privacy/unnameable_types.stderr
@@ -1,23 +1,23 @@
 error: struct `PubStruct` is reachable but cannot be named
-  --> $DIR/unnameable_types.rs:6:5
+  --> $DIR/unnameable_types.rs:5:5
    |
 LL |     pub struct PubStruct(pub i32);
    |     ^^^^^^^^^^^^^^^^^^^^ reachable at visibility `pub`, but can only be named at visibility `pub(crate)`
    |
 note: the lint level is defined here
-  --> $DIR/unnameable_types.rs:3:9
+  --> $DIR/unnameable_types.rs:2:9
    |
 LL | #![deny(unnameable_types)]
    |         ^^^^^^^^^^^^^^^^
 
 error: enum `PubE` is reachable but cannot be named
-  --> $DIR/unnameable_types.rs:8:5
+  --> $DIR/unnameable_types.rs:7:5
    |
 LL |     pub enum PubE {
    |     ^^^^^^^^^^^^^ reachable at visibility `pub`, but can only be named at visibility `pub(crate)`
 
 error: trait `PubTr` is reachable but cannot be named
-  --> $DIR/unnameable_types.rs:12:5
+  --> $DIR/unnameable_types.rs:11:5
    |
 LL |     pub trait PubTr {
    |     ^^^^^^^^^^^^^^^ reachable at visibility `pub`, but can only be named at visibility `pub(crate)`
diff --git a/tests/ui/privacy/where-priv-type.rs b/tests/ui/privacy/where-priv-type.rs
index 2e0a6b3e72c..cd9cce7ec3e 100644
--- a/tests/ui/privacy/where-priv-type.rs
+++ b/tests/ui/privacy/where-priv-type.rs
@@ -3,14 +3,7 @@
 
 #![crate_type = "lib"]
 #![feature(generic_const_exprs)]
-#![feature(type_privacy_lints)]
 #![allow(incomplete_features)]
-#![warn(private_bounds)]
-#![warn(private_interfaces)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
 
 struct PrivTy;
 trait PrivTr {}
@@ -23,42 +16,33 @@ impl PubTrWithAssocTy for PrivTy { type AssocTy = PrivTy; }
 
 
 pub struct S
-//~^ WARNING private type `PrivTy` in public interface
-//~| WARNING hard error
-//~| WARNING type `PrivTy` is more private than the item `S`
+//~^ WARNING type `PrivTy` is more private than the item `S`
 where
     PrivTy:
 {}
 
 
 pub enum E
-//~^ WARNING private type `PrivTy` in public interface
-//~| WARNING hard error
-//~| WARNING type `PrivTy` is more private than the item `E`
+//~^ WARNING type `PrivTy` is more private than the item `E`
 where
     PrivTy:
 {}
 
 
 pub fn f()
-//~^ WARNING private type `PrivTy` in public interface
-//~| WARNING hard error
-//~| WARNING type `PrivTy` is more private than the item `f`
+//~^ WARNING type `PrivTy` is more private than the item `f`
 where
     PrivTy:
 {}
 
 
 impl S
-//~^ ERROR private type `PrivTy` in public interface
-//~| WARNING type `PrivTy` is more private than the item `S`
+//~^ WARNING type `PrivTy` is more private than the item `S`
 where
     PrivTy:
 {
     pub fn f()
-    //~^ WARNING private type `PrivTy` in public interface
-    //~| WARNING hard error
-    //~| WARNING type `PrivTy` is more private than the item `S::f`
+    //~^ WARNING type `PrivTy` is more private than the item `S::f`
     where
         PrivTy:
     {}
@@ -90,7 +74,6 @@ where
 {
     type AssocTy = Const<{ my_const_fn(U) }>;
     //~^ ERROR private type
-    //~| WARNING type `fn(u8) -> u8 {my_const_fn}` is more private than the item `<Const<U> as Trait>::AssocTy`
     fn assoc_fn() -> Self::AssocTy {
         Const
     }
diff --git a/tests/ui/privacy/where-priv-type.stderr b/tests/ui/privacy/where-priv-type.stderr
index d6baf22b3fb..dcc249c6351 100644
--- a/tests/ui/privacy/where-priv-type.stderr
+++ b/tests/ui/privacy/where-priv-type.stderr
@@ -1,136 +1,72 @@
-warning: private type `PrivTy` in public interface (error E0446)
-  --> $DIR/where-priv-type.rs:25:1
-   |
-LL | pub struct S
-   | ^^^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-   = note: `#[warn(private_in_public)]` on by default
-
 warning: type `PrivTy` is more private than the item `S`
-  --> $DIR/where-priv-type.rs:25:1
+  --> $DIR/where-priv-type.rs:18:1
    |
 LL | pub struct S
    | ^^^^^^^^^^^^ struct `S` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/where-priv-type.rs:15:1
+  --> $DIR/where-priv-type.rs:8:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/where-priv-type.rs:8:9
-   |
-LL | #![warn(private_bounds)]
-   |         ^^^^^^^^^^^^^^
-
-warning: private type `PrivTy` in public interface (error E0446)
-  --> $DIR/where-priv-type.rs:34:1
-   |
-LL | pub enum E
-   | ^^^^^^^^^^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
+   = note: `#[warn(private_bounds)]` on by default
 
 warning: type `PrivTy` is more private than the item `E`
-  --> $DIR/where-priv-type.rs:34:1
+  --> $DIR/where-priv-type.rs:25:1
    |
 LL | pub enum E
    | ^^^^^^^^^^ enum `E` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/where-priv-type.rs:15:1
+  --> $DIR/where-priv-type.rs:8:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
 
-warning: private type `PrivTy` in public interface (error E0446)
-  --> $DIR/where-priv-type.rs:43:1
-   |
-LL | / pub fn f()
-LL | |
-LL | |
-LL | |
-LL | | where
-LL | |     PrivTy:
-   | |___________^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-
 warning: type `PrivTy` is more private than the item `f`
-  --> $DIR/where-priv-type.rs:43:1
+  --> $DIR/where-priv-type.rs:32:1
    |
 LL | / pub fn f()
 LL | |
-LL | |
-LL | |
 LL | | where
 LL | |     PrivTy:
    | |___________^ function `f` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/where-priv-type.rs:15:1
+  --> $DIR/where-priv-type.rs:8:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
 
-error[E0446]: private type `PrivTy` in public interface
-  --> $DIR/where-priv-type.rs:52:1
-   |
-LL | struct PrivTy;
-   | ------------- `PrivTy` declared as private
-...
-LL | impl S
-   | ^^^^^^ can't leak private type
-
 warning: type `PrivTy` is more private than the item `S`
-  --> $DIR/where-priv-type.rs:52:1
+  --> $DIR/where-priv-type.rs:39:1
    |
 LL | impl S
    | ^^^^^^ implementation `S` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/where-priv-type.rs:15:1
+  --> $DIR/where-priv-type.rs:8:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
 
-warning: private type `PrivTy` in public interface (error E0446)
-  --> $DIR/where-priv-type.rs:58:5
-   |
-LL | /     pub fn f()
-LL | |
-LL | |
-LL | |
-LL | |     where
-LL | |         PrivTy:
-   | |_______________^
-   |
-   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
-
 warning: type `PrivTy` is more private than the item `S::f`
-  --> $DIR/where-priv-type.rs:58:5
+  --> $DIR/where-priv-type.rs:44:5
    |
 LL | /     pub fn f()
 LL | |
-LL | |
-LL | |
 LL | |     where
 LL | |         PrivTy:
    | |_______________^ associated function `S::f` is reachable at visibility `pub`
    |
 note: but type `PrivTy` is only usable at visibility `pub(crate)`
-  --> $DIR/where-priv-type.rs:15:1
+  --> $DIR/where-priv-type.rs:8:1
    |
 LL | struct PrivTy;
    | ^^^^^^^^^^^^^
 
 error[E0446]: private type `fn(u8) -> u8 {my_const_fn}` in public interface
-  --> $DIR/where-priv-type.rs:91:5
+  --> $DIR/where-priv-type.rs:75:5
    |
 LL |     type AssocTy = Const<{ my_const_fn(U) }>;
    |     ^^^^^^^^^^^^ can't leak private type
@@ -138,23 +74,6 @@ LL |     type AssocTy = Const<{ my_const_fn(U) }>;
 LL | const fn my_const_fn(val: u8) -> u8 {
    | ----------------------------------- `fn(u8) -> u8 {my_const_fn}` declared as private
 
-warning: type `fn(u8) -> u8 {my_const_fn}` is more private than the item `<Const<U> as Trait>::AssocTy`
-  --> $DIR/where-priv-type.rs:91:5
-   |
-LL |     type AssocTy = Const<{ my_const_fn(U) }>;
-   |     ^^^^^^^^^^^^ associated type `<Const<U> as Trait>::AssocTy` is reachable at visibility `pub`
-   |
-note: but type `fn(u8) -> u8 {my_const_fn}` is only usable at visibility `pub(crate)`
-  --> $DIR/where-priv-type.rs:99:1
-   |
-LL | const fn my_const_fn(val: u8) -> u8 {
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/where-priv-type.rs:9:9
-   |
-LL | #![warn(private_interfaces)]
-   |         ^^^^^^^^^^^^^^^^^^
-
-error: aborting due to 2 previous errors; 10 warnings emitted
+error: aborting due to previous error; 5 warnings emitted
 
 For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/privacy/where-pub-type-impls-priv-trait.rs b/tests/ui/privacy/where-pub-type-impls-priv-trait.rs
index c59fdb7c7a9..d5e797b52b3 100644
--- a/tests/ui/privacy/where-pub-type-impls-priv-trait.rs
+++ b/tests/ui/privacy/where-pub-type-impls-priv-trait.rs
@@ -1,14 +1,10 @@
+// check-pass
+
 // priv-in-pub lint tests where the private trait bounds a public type
 
 #![crate_type = "lib"]
 #![feature(generic_const_exprs)]
-#![feature(type_privacy_lints)]
 #![allow(incomplete_features)]
-#![warn(private_bounds)]
-
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
 
 struct PrivTy;
 trait PrivTr {}
@@ -22,38 +18,33 @@ impl PubTrWithAssocTy for PrivTy { type AssocTy = PrivTy; }
 
 
 pub struct S
-//~^ ERROR private trait `PrivTr` in public interface
-//~| WARNING trait `PrivTr` is more private than the item `S`
+//~^ WARNING trait `PrivTr` is more private than the item `S`
 where
     PubTy: PrivTr
 {}
 
 
 pub enum E
-//~^ ERROR private trait `PrivTr` in public interface
-//~| WARNING trait `PrivTr` is more private than the item `E`
+//~^ WARNING trait `PrivTr` is more private than the item `E`
 where
     PubTy: PrivTr
 {}
 
 
 pub fn f()
-//~^ ERROR private trait `PrivTr` in public interface
-//~| WARNING trait `PrivTr` is more private than the item `f`
+//~^ WARNING trait `PrivTr` is more private than the item `f`
 where
     PubTy: PrivTr
 {}
 
 
 impl S
-//~^ ERROR private trait `PrivTr` in public interface
-//~| WARNING trait `PrivTr` is more private than the item `S`
+//~^ WARNING trait `PrivTr` is more private than the item `S`
 where
     PubTy: PrivTr
 {
     pub fn f()
-    //~^ ERROR private trait `PrivTr` in public interface
-    //~| WARNING trait `PrivTr` is more private than the item `S::f`
+    //~^ WARNING trait `PrivTr` is more private than the item `S::f`
     where
         PubTy: PrivTr
     {}
diff --git a/tests/ui/privacy/where-pub-type-impls-priv-trait.stderr b/tests/ui/privacy/where-pub-type-impls-priv-trait.stderr
index e2d7ce44692..c476874332c 100644
--- a/tests/ui/privacy/where-pub-type-impls-priv-trait.stderr
+++ b/tests/ui/privacy/where-pub-type-impls-priv-trait.stderr
@@ -1,129 +1,69 @@
-error[E0445]: private trait `PrivTr` in public interface
-  --> $DIR/where-pub-type-impls-priv-trait.rs:24:1
-   |
-LL | trait PrivTr {}
-   | ------------ `PrivTr` declared as private
-...
-LL | pub struct S
-   | ^^^^^^^^^^^^ can't leak private trait
-
 warning: trait `PrivTr` is more private than the item `S`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:24:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:20:1
    |
 LL | pub struct S
    | ^^^^^^^^^^^^ struct `S` is reachable at visibility `pub`
    |
 note: but trait `PrivTr` is only usable at visibility `pub(crate)`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:14:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:10:1
    |
 LL | trait PrivTr {}
    | ^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/where-pub-type-impls-priv-trait.rs:7:9
-   |
-LL | #![warn(private_bounds)]
-   |         ^^^^^^^^^^^^^^
-
-error[E0445]: private trait `PrivTr` in public interface
-  --> $DIR/where-pub-type-impls-priv-trait.rs:32:1
-   |
-LL | trait PrivTr {}
-   | ------------ `PrivTr` declared as private
-...
-LL | pub enum E
-   | ^^^^^^^^^^ can't leak private trait
+   = note: `#[warn(private_bounds)]` on by default
 
 warning: trait `PrivTr` is more private than the item `E`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:32:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:27:1
    |
 LL | pub enum E
    | ^^^^^^^^^^ enum `E` is reachable at visibility `pub`
    |
 note: but trait `PrivTr` is only usable at visibility `pub(crate)`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:14:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:10:1
    |
 LL | trait PrivTr {}
    | ^^^^^^^^^^^^
 
-error[E0445]: private trait `PrivTr` in public interface
-  --> $DIR/where-pub-type-impls-priv-trait.rs:40:1
-   |
-LL |   trait PrivTr {}
-   |   ------------ `PrivTr` declared as private
-...
-LL | / pub fn f()
-LL | |
-LL | |
-LL | | where
-LL | |     PubTy: PrivTr
-   | |_________________^ can't leak private trait
-
 warning: trait `PrivTr` is more private than the item `f`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:40:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:34:1
    |
 LL | / pub fn f()
 LL | |
-LL | |
 LL | | where
 LL | |     PubTy: PrivTr
    | |_________________^ function `f` is reachable at visibility `pub`
    |
 note: but trait `PrivTr` is only usable at visibility `pub(crate)`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:14:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:10:1
    |
 LL | trait PrivTr {}
    | ^^^^^^^^^^^^
 
-error[E0445]: private trait `PrivTr` in public interface
-  --> $DIR/where-pub-type-impls-priv-trait.rs:48:1
-   |
-LL | trait PrivTr {}
-   | ------------ `PrivTr` declared as private
-...
-LL | impl S
-   | ^^^^^^ can't leak private trait
-
 warning: trait `PrivTr` is more private than the item `S`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:48:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:41:1
    |
 LL | impl S
    | ^^^^^^ implementation `S` is reachable at visibility `pub`
    |
 note: but trait `PrivTr` is only usable at visibility `pub(crate)`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:14:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:10:1
    |
 LL | trait PrivTr {}
    | ^^^^^^^^^^^^
 
-error[E0445]: private trait `PrivTr` in public interface
-  --> $DIR/where-pub-type-impls-priv-trait.rs:54:5
-   |
-LL |   trait PrivTr {}
-   |   ------------ `PrivTr` declared as private
-...
-LL | /     pub fn f()
-LL | |
-LL | |
-LL | |     where
-LL | |         PubTy: PrivTr
-   | |_____________________^ can't leak private trait
-
 warning: trait `PrivTr` is more private than the item `S::f`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:54:5
+  --> $DIR/where-pub-type-impls-priv-trait.rs:46:5
    |
 LL | /     pub fn f()
 LL | |
-LL | |
 LL | |     where
 LL | |         PubTy: PrivTr
    | |_____________________^ associated function `S::f` is reachable at visibility `pub`
    |
 note: but trait `PrivTr` is only usable at visibility `pub(crate)`
-  --> $DIR/where-pub-type-impls-priv-trait.rs:14:1
+  --> $DIR/where-pub-type-impls-priv-trait.rs:10:1
    |
 LL | trait PrivTr {}
    | ^^^^^^^^^^^^
 
-error: aborting due to 5 previous errors; 5 warnings emitted
+warning: 5 warnings emitted
 
-For more information about this error, try `rustc --explain E0445`.
diff --git a/tests/ui/proc-macro/allowed-signatures.rs b/tests/ui/proc-macro/allowed-signatures.rs
index 86850876112..ce327901b1a 100644
--- a/tests/ui/proc-macro/allowed-signatures.rs
+++ b/tests/ui/proc-macro/allowed-signatures.rs
@@ -3,7 +3,7 @@
 // no-prefer-dynamic
 
 #![crate_type = "proc-macro"]
-#![allow(private_in_public)]
+#![allow(private_interfaces)]
 extern crate proc_macro;
 use proc_macro::TokenStream;
 
diff --git a/tests/ui/proc-macro/bad-projection.stderr b/tests/ui/proc-macro/bad-projection.stderr
index 8a8246376fe..8716defa17a 100644
--- a/tests/ui/proc-macro/bad-projection.stderr
+++ b/tests/ui/proc-macro/bad-projection.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(): Project` is not satisfied
    |
 LL | pub fn uwu() -> <() as Project>::Assoc {}
    |                 ^^^^^^^^^^^^^^^^^^^^^^ the trait `Project` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/bad-projection.rs:9:1
+   |
+LL | trait Project {
+   | ^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/pub/issue-33174-restricted-type-in-public-interface.rs b/tests/ui/pub/issue-33174-restricted-type-in-public-interface.rs
index cdeea6224b2..7930964c83b 100644
--- a/tests/ui/pub/issue-33174-restricted-type-in-public-interface.rs
+++ b/tests/ui/pub/issue-33174-restricted-type-in-public-interface.rs
@@ -1,44 +1,24 @@
-#![feature(type_privacy_lints)]
-#![allow(non_camel_case_types)] // genus is always capitalized
-#![warn(private_interfaces)]
-//~^ NOTE the lint level is defined here
+// check-pass
 
-// In this test both old and new private-in-public diagnostic were emitted.
-// Old diagnostic will be deleted soon.
-// See https://rust-lang.github.io/rfcs/2145-type-privacy.html.
+#![allow(non_camel_case_types)] // genus is always capitalized
 
 pub(crate) struct Snail;
-//~^ NOTE `Snail` declared as private
-//~| NOTE but type `Snail` is only usable at visibility `pub(crate)`
 
 mod sea {
     pub(super) struct Turtle;
-    //~^ NOTE `Turtle` declared as crate-private
-    //~| NOTE but type `Turtle` is only usable at visibility `pub(crate)`
 }
 
 struct Tortoise;
-//~^ NOTE `Tortoise` declared as private
-//~| NOTE but type `Tortoise` is only usable at visibility `pub(crate)`
 
 pub struct Shell<T> {
     pub(crate) creature: T,
 }
 
 pub type Helix_pomatia = Shell<Snail>;
-//~^ ERROR private type `Snail` in public interface
-//~| WARNING type `Snail` is more private than the item `Helix_pomatia`
-//~| NOTE can't leak private type
-//~| NOTE type alias `Helix_pomatia` is reachable at visibility `pub`
+//~^ WARNING type `Snail` is more private than the item `Helix_pomatia`
 pub type Dermochelys_coriacea = Shell<sea::Turtle>;
-//~^ ERROR crate-private type `Turtle` in public interface
-//~| WARNING type `Turtle` is more private than the item `Dermochelys_coriacea`
-//~| NOTE can't leak crate-private type
-//~| NOTE type alias `Dermochelys_coriacea` is reachable at visibility `pub`
+//~^ WARNING type `Turtle` is more private than the item `Dermochelys_coriacea`
 pub type Testudo_graeca = Shell<Tortoise>;
-//~^ ERROR private type `Tortoise` in public interface
-//~| WARNING type `Tortoise` is more private than the item `Testudo_graeca`
-//~| NOTE can't leak private type
-//~| NOTE type alias `Testudo_graeca` is reachable at visibility `pub`
+//~^ WARNING type `Tortoise` is more private than the item `Testudo_graeca`
 
 fn main() {}
diff --git a/tests/ui/pub/issue-33174-restricted-type-in-public-interface.stderr b/tests/ui/pub/issue-33174-restricted-type-in-public-interface.stderr
index 20e51e1901f..26dfa2e7d4f 100644
--- a/tests/ui/pub/issue-33174-restricted-type-in-public-interface.stderr
+++ b/tests/ui/pub/issue-33174-restricted-type-in-public-interface.stderr
@@ -1,71 +1,39 @@
-error[E0446]: private type `Snail` in public interface
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:28:1
-   |
-LL | pub(crate) struct Snail;
-   | ----------------------- `Snail` declared as private
-...
-LL | pub type Helix_pomatia = Shell<Snail>;
-   | ^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
 warning: type `Snail` is more private than the item `Helix_pomatia`
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:28:1
+  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:17:1
    |
 LL | pub type Helix_pomatia = Shell<Snail>;
    | ^^^^^^^^^^^^^^^^^^^^^^ type alias `Helix_pomatia` is reachable at visibility `pub`
    |
 note: but type `Snail` is only usable at visibility `pub(crate)`
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:10:1
+  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:5:1
    |
 LL | pub(crate) struct Snail;
    | ^^^^^^^^^^^^^^^^^^^^^^^
-note: the lint level is defined here
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:3:9
-   |
-LL | #![warn(private_interfaces)]
-   |         ^^^^^^^^^^^^^^^^^^
-
-error[E0446]: crate-private type `Turtle` in public interface
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:33:1
-   |
-LL |     pub(super) struct Turtle;
-   |     ------------------------ `Turtle` declared as crate-private
-...
-LL | pub type Dermochelys_coriacea = Shell<sea::Turtle>;
-   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't leak crate-private type
+   = note: `#[warn(private_interfaces)]` on by default
 
 warning: type `Turtle` is more private than the item `Dermochelys_coriacea`
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:33:1
+  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:19:1
    |
 LL | pub type Dermochelys_coriacea = Shell<sea::Turtle>;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type alias `Dermochelys_coriacea` is reachable at visibility `pub`
    |
 note: but type `Turtle` is only usable at visibility `pub(crate)`
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:15:5
+  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:8:5
    |
 LL |     pub(super) struct Turtle;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
 
-error[E0446]: private type `Tortoise` in public interface
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:38:1
-   |
-LL | struct Tortoise;
-   | --------------- `Tortoise` declared as private
-...
-LL | pub type Testudo_graeca = Shell<Tortoise>;
-   | ^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
-
 warning: type `Tortoise` is more private than the item `Testudo_graeca`
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:38:1
+  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:21:1
    |
 LL | pub type Testudo_graeca = Shell<Tortoise>;
    | ^^^^^^^^^^^^^^^^^^^^^^^ type alias `Testudo_graeca` is reachable at visibility `pub`
    |
 note: but type `Tortoise` is only usable at visibility `pub(crate)`
-  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:20:1
+  --> $DIR/issue-33174-restricted-type-in-public-interface.rs:11:1
    |
 LL | struct Tortoise;
    | ^^^^^^^^^^^^^^^
 
-error: aborting due to 3 previous errors; 3 warnings emitted
+warning: 3 warnings emitted
 
-For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/pub/pub-restricted-error-fn.stderr b/tests/ui/pub/pub-restricted-error-fn.stderr
index 0511a821a7a..ca5d8e1b58e 100644
--- a/tests/ui/pub/pub-restricted-error-fn.stderr
+++ b/tests/ui/pub/pub-restricted-error-fn.stderr
@@ -11,6 +11,8 @@ error: expected item, found `(`
    |
 LL | pub(crate) () fn foo() {}
    |            ^ expected item
+   |
+   = note: for a full list of items that can appear in modules, see <https://doc.rust-lang.org/reference/items.html>
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/range/range-1.stderr b/tests/ui/range/range-1.stderr
index 277d9b2682d..96c1ffb2f7e 100644
--- a/tests/ui/range/range-1.stderr
+++ b/tests/ui/range/range-1.stderr
@@ -19,7 +19,7 @@ LL |     for i in false..true {}
              i64
              i128
              usize
-           and 5 others
+           and 8 others
    = note: required for `std::ops::Range<bool>` to implement `Iterator`
    = note: required for `std::ops::Range<bool>` to implement `IntoIterator`
 
diff --git a/tests/ui/regions/region-lifetime-bounds-on-fns-where-clause.stderr b/tests/ui/regions/region-lifetime-bounds-on-fns-where-clause.stderr
index f2328cf3b24..a9a92b7a695 100644
--- a/tests/ui/regions/region-lifetime-bounds-on-fns-where-clause.stderr
+++ b/tests/ui/regions/region-lifetime-bounds-on-fns-where-clause.stderr
@@ -8,7 +8,6 @@ LL |     let _: fn(&mut &isize, &mut &isize) = a;
    |
    = note: expected fn pointer `for<'a, 'b, 'c, 'd> fn(&'a mut &'b isize, &'c mut &'d isize)`
                  found fn item `for<'a, 'b> fn(&'a mut &isize, &'b mut &isize) {a::<'_, '_>}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 
 error: aborting due to previous error
 
diff --git a/tests/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.stderr b/tests/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.stderr
index 9c5004981d5..e96559937d4 100644
--- a/tests/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.stderr
+++ b/tests/ui/regions/region-multiple-lifetime-bounds-on-fns-where-clause.stderr
@@ -8,7 +8,6 @@ LL |     let _: fn(&mut &isize, &mut &isize, &mut &isize) = a;
    |
    = note: expected fn pointer `for<'a, 'b, 'c, 'd, 'e, 'f> fn(&'a mut &'b isize, &'c mut &'d isize, &'e mut &'f isize)`
                  found fn item `for<'a, 'b, 'c> fn(&'a mut &isize, &'b mut &isize, &'c mut &isize) {a::<'_, '_, '_>}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 
 error: aborting due to previous error
 
diff --git a/tests/ui/regions/regions-fn-subtyping-return-static-fail.stderr b/tests/ui/regions/regions-fn-subtyping-return-static-fail.stderr
index 766a3d0337c..8d82ff958ff 100644
--- a/tests/ui/regions/regions-fn-subtyping-return-static-fail.stderr
+++ b/tests/ui/regions/regions-fn-subtyping-return-static-fail.stderr
@@ -8,7 +8,6 @@ LL |     want_G(baz);
    |
    = note: expected fn pointer `for<'cx> fn(&'cx S) -> &'static S`
                  found fn item `for<'a> fn(&'a S) -> &'a S {baz}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 note: function defined here
   --> $DIR/regions-fn-subtyping-return-static-fail.rs:20:4
    |
diff --git a/tests/ui/regions/regions-lifetime-bounds-on-fns.stderr b/tests/ui/regions/regions-lifetime-bounds-on-fns.stderr
index 2fab2986567..53a5612d24f 100644
--- a/tests/ui/regions/regions-lifetime-bounds-on-fns.stderr
+++ b/tests/ui/regions/regions-lifetime-bounds-on-fns.stderr
@@ -8,7 +8,6 @@ LL |     let _: fn(&mut &isize, &mut &isize) = a;
    |
    = note: expected fn pointer `for<'a, 'b, 'c, 'd> fn(&'a mut &'b isize, &'c mut &'d isize)`
                  found fn item `for<'a, 'b> fn(&'a mut &isize, &'b mut &isize) {a::<'_, '_>}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 
 error: aborting due to previous error
 
diff --git a/tests/ui/reify-intrinsic.stderr b/tests/ui/reify-intrinsic.stderr
index 9f9034a30c7..310b6c224e0 100644
--- a/tests/ui/reify-intrinsic.stderr
+++ b/tests/ui/reify-intrinsic.stderr
@@ -8,7 +8,6 @@ LL |     let _: unsafe extern "rust-intrinsic" fn(isize) -> usize = std::mem::tr
    |
    = note: expected fn pointer `unsafe extern "rust-intrinsic" fn(isize) -> usize`
                  found fn item `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}`
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 
 error[E0606]: casting `unsafe extern "rust-intrinsic" fn(_) -> _ {transmute::<_, _>}` as `unsafe extern "rust-intrinsic" fn(isize) -> usize` is invalid
   --> $DIR/reify-intrinsic.rs:11:13
diff --git a/tests/ui/resolve/bad-type-env-capture.stderr b/tests/ui/resolve/bad-type-env-capture.stderr
index b6282c2d070..941b6b7a68c 100644
--- a/tests/ui/resolve/bad-type-env-capture.stderr
+++ b/tests/ui/resolve/bad-type-env-capture.stderr
@@ -1,12 +1,12 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/bad-type-env-capture.rs:2:15
    |
 LL | fn foo<T>() {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 LL |     fn bar(b: T) { }
-   |           -   ^ use of generic parameter from outer function
+   |           -   ^ use of generic parameter from outer item
    |           |
-   |           help: try using a local generic parameter instead: `<T>`
+   |           help: try introducing a local generic parameter here: `<T>`
 
 error: aborting due to previous error
 
diff --git a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr
new file mode 100644
index 00000000000..4f853829279
--- /dev/null
+++ b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.default.stderr
@@ -0,0 +1,28 @@
+error[E0401]: can't use generic parameters from outer item
+  --> $DIR/generic-params-from-outer-item-in-const-item.rs:12:20
+   |
+LL | fn outer<T: Tr>() { // outer function
+   |          - type parameter from outer item
+LL |     const K: u32 = T::C;
+   |                    ^^^^ use of generic parameter from outer item
+
+error[E0401]: can't use generic parameters from outer item
+  --> $DIR/generic-params-from-outer-item-in-const-item.rs:19:24
+   |
+LL | impl<T> Tr for T { // outer impl block
+   |      - type parameter from outer item
+LL |     const C: u32 = {
+LL |         const I: u32 = T::C;
+   |                        ^^^^ use of generic parameter from outer item
+
+error[E0401]: can't use generic parameters from outer item
+  --> $DIR/generic-params-from-outer-item-in-const-item.rs:27:20
+   |
+LL | struct S<T: Tr>(U32<{ // outer struct
+   |          - type parameter from outer item
+LL |     const _: u32 = T::C;
+   |                    ^^^^ use of generic parameter from outer item
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0401`.
diff --git a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr
new file mode 100644
index 00000000000..1cb55842bc6
--- /dev/null
+++ b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.generic_const_items.stderr
@@ -0,0 +1,34 @@
+error[E0401]: can't use generic parameters from outer item
+  --> $DIR/generic-params-from-outer-item-in-const-item.rs:12:20
+   |
+LL | fn outer<T: Tr>() { // outer function
+   |          - type parameter from outer item
+LL |     const K: u32 = T::C;
+   |            -       ^^^^ use of generic parameter from outer item
+   |            |
+   |            help: try introducing a local generic parameter here: `<T>`
+
+error[E0401]: can't use generic parameters from outer item
+  --> $DIR/generic-params-from-outer-item-in-const-item.rs:19:24
+   |
+LL | impl<T> Tr for T { // outer impl block
+   |      - type parameter from outer item
+LL |     const C: u32 = {
+LL |         const I: u32 = T::C;
+   |                -       ^^^^ use of generic parameter from outer item
+   |                |
+   |                help: try introducing a local generic parameter here: `<T>`
+
+error[E0401]: can't use generic parameters from outer item
+  --> $DIR/generic-params-from-outer-item-in-const-item.rs:27:20
+   |
+LL | struct S<T: Tr>(U32<{ // outer struct
+   |          - type parameter from outer item
+LL |     const _: u32 = T::C;
+   |            -       ^^^^ use of generic parameter from outer item
+   |            |
+   |            help: try introducing a local generic parameter here: `<T>`
+
+error: aborting due to 3 previous errors
+
+For more information about this error, try `rustc --explain E0401`.
diff --git a/tests/ui/resolve/generic-params-from-outer-item-in-const-item.rs b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.rs
new file mode 100644
index 00000000000..e5647d72cba
--- /dev/null
+++ b/tests/ui/resolve/generic-params-from-outer-item-in-const-item.rs
@@ -0,0 +1,39 @@
+// Regression test for issue #115720.
+// If a const item contains generic params from an outer items, only suggest
+// turning the const item generic if the feature `generic_const_items` is enabled.
+
+// revisions: default generic_const_items
+
+#![cfg_attr(generic_const_items, feature(generic_const_items))]
+#![feature(generic_const_exprs)] // only used for the test case "outer struct"
+#![allow(incomplete_features)]
+
+fn outer<T: Tr>() { // outer function
+    const K: u32 = T::C;
+    //~^ ERROR can't use generic parameters from outer item
+    //[generic_const_items]~| HELP try introducing a local generic parameter here
+}
+
+impl<T> Tr for T { // outer impl block
+    const C: u32 = {
+        const I: u32 = T::C;
+        //~^ ERROR can't use generic parameters from outer item
+        //[generic_const_items]~| HELP try introducing a local generic parameter here
+        I
+    };
+}
+
+struct S<T: Tr>(U32<{ // outer struct
+    const _: u32 = T::C;
+    //~^ ERROR can't use generic parameters from outer item
+    //[generic_const_items]~| HELP try introducing a local generic parameter here
+    0
+}>);
+
+trait Tr {
+    const C: u32;
+}
+
+struct U32<const N: u32>;
+
+fn main() {}
diff --git a/tests/ui/resolve/issue-12796.rs b/tests/ui/resolve/issue-12796.rs
index 942d6b9a568..de3e73437f0 100644
--- a/tests/ui/resolve/issue-12796.rs
+++ b/tests/ui/resolve/issue-12796.rs
@@ -1,7 +1,7 @@
 trait Trait {
     fn outer(&self) {
         fn inner(_: &Self) {
-            //~^ ERROR can't use generic parameters from outer function
+            //~^ ERROR can't use generic parameters from outer item
         }
     }
 }
diff --git a/tests/ui/resolve/issue-12796.stderr b/tests/ui/resolve/issue-12796.stderr
index a01fd2d6542..ef59d00360b 100644
--- a/tests/ui/resolve/issue-12796.stderr
+++ b/tests/ui/resolve/issue-12796.stderr
@@ -1,10 +1,10 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-12796.rs:3:22
    |
 LL |         fn inner(_: &Self) {
    |                      ^^^^
    |                      |
-   |                      use of generic parameter from outer function
+   |                      use of generic parameter from outer item
    |                      can't use `Self` here
 
 error: aborting due to previous error
diff --git a/tests/ui/resolve/issue-3021-c.rs b/tests/ui/resolve/issue-3021-c.rs
index 94ed1fdf781..bd21d124423 100644
--- a/tests/ui/resolve/issue-3021-c.rs
+++ b/tests/ui/resolve/issue-3021-c.rs
@@ -1,8 +1,8 @@
 fn siphash<T>() {
 
     trait U {
-        fn g(&self, x: T) -> T;  //~ ERROR can't use generic parameters from outer function
-        //~^ ERROR can't use generic parameters from outer function
+        fn g(&self, x: T) -> T;  //~ ERROR can't use generic parameters from outer item
+        //~^ ERROR can't use generic parameters from outer item
     }
 }
 
diff --git a/tests/ui/resolve/issue-3021-c.stderr b/tests/ui/resolve/issue-3021-c.stderr
index 5176efc3a6b..537bbaf7b6a 100644
--- a/tests/ui/resolve/issue-3021-c.stderr
+++ b/tests/ui/resolve/issue-3021-c.stderr
@@ -1,24 +1,24 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-3021-c.rs:4:24
    |
 LL | fn siphash<T>() {
-   |            - type parameter from outer function
+   |            - type parameter from outer item
 LL |
 LL |     trait U {
-   |            - help: try using a local generic parameter instead: `<T>`
+   |            - help: try introducing a local generic parameter here: `<T>`
 LL |         fn g(&self, x: T) -> T;
-   |                        ^ use of generic parameter from outer function
+   |                        ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-3021-c.rs:4:30
    |
 LL | fn siphash<T>() {
-   |            - type parameter from outer function
+   |            - type parameter from outer item
 LL |
 LL |     trait U {
-   |            - help: try using a local generic parameter instead: `<T>`
+   |            - help: try introducing a local generic parameter here: `<T>`
 LL |         fn g(&self, x: T) -> T;
-   |                              ^ use of generic parameter from outer function
+   |                              ^ use of generic parameter from outer item
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/resolve/issue-65025-extern-static-parent-generics.rs b/tests/ui/resolve/issue-65025-extern-static-parent-generics.rs
index ce45f630e48..4fa3f12d024 100644
--- a/tests/ui/resolve/issue-65025-extern-static-parent-generics.rs
+++ b/tests/ui/resolve/issue-65025-extern-static-parent-generics.rs
@@ -1,7 +1,7 @@
 unsafe fn foo<A>() {
     extern "C" {
         static baz: *const A;
-        //~^ ERROR can't use generic parameters from outer function
+        //~^ ERROR can't use generic parameters from outer item
     }
 
     let bar: *const u64 = core::mem::transmute(&baz);
diff --git a/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr b/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr
index 6bbf76dd1fb..3e9c3fd11b7 100644
--- a/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr
+++ b/tests/ui/resolve/issue-65025-extern-static-parent-generics.stderr
@@ -1,11 +1,11 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-65025-extern-static-parent-generics.rs:3:28
    |
 LL | unsafe fn foo<A>() {
-   |               - type parameter from outer function
+   |               - type parameter from outer item
 LL |     extern "C" {
 LL |         static baz: *const A;
-   |                            ^ use of generic parameter from outer function
+   |                            ^ use of generic parameter from outer item
 
 error: aborting due to previous error
 
diff --git a/tests/ui/resolve/issue-65035-static-with-parent-generics.rs b/tests/ui/resolve/issue-65035-static-with-parent-generics.rs
index f96c04841dd..bc99584a8d2 100644
--- a/tests/ui/resolve/issue-65035-static-with-parent-generics.rs
+++ b/tests/ui/resolve/issue-65035-static-with-parent-generics.rs
@@ -1,26 +1,26 @@
 fn f<T>() {
     extern "C" {
         static a: *const T;
-        //~^ ERROR can't use generic parameters from outer function
+        //~^ ERROR can't use generic parameters from outer item
     }
 }
 
 fn g<T: Default>() {
     static a: *const T = Default::default();
-    //~^ ERROR can't use generic parameters from outer function
+    //~^ ERROR can't use generic parameters from outer item
 }
 
 fn h<const N: usize>() {
     extern "C" {
         static a: [u8; N];
-        //~^ ERROR can't use generic parameters from outer function
+        //~^ ERROR can't use generic parameters from outer item
     }
 }
 
 fn i<const N: usize>() {
     static a: [u8; N] = [0; N];
-    //~^ ERROR can't use generic parameters from outer function
-    //~| ERROR can't use generic parameters from outer function
+    //~^ ERROR can't use generic parameters from outer item
+    //~| ERROR can't use generic parameters from outer item
 }
 
 fn main() {}
diff --git a/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr b/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr
index 7ed572f80b8..f1fe1a6002c 100644
--- a/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr
+++ b/tests/ui/resolve/issue-65035-static-with-parent-generics.stderr
@@ -1,44 +1,44 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-65035-static-with-parent-generics.rs:3:26
    |
 LL | fn f<T>() {
-   |      - type parameter from outer function
+   |      - type parameter from outer item
 LL |     extern "C" {
 LL |         static a: *const T;
-   |                          ^ use of generic parameter from outer function
+   |                          ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-65035-static-with-parent-generics.rs:9:22
    |
 LL | fn g<T: Default>() {
-   |      - type parameter from outer function
+   |      - type parameter from outer item
 LL |     static a: *const T = Default::default();
-   |                      ^ use of generic parameter from outer function
+   |                      ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-65035-static-with-parent-generics.rs:15:24
    |
 LL | fn h<const N: usize>() {
-   |            - const parameter from outer function
+   |            - const parameter from outer item
 LL |     extern "C" {
 LL |         static a: [u8; N];
-   |                        ^ use of generic parameter from outer function
+   |                        ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-65035-static-with-parent-generics.rs:21:20
    |
 LL | fn i<const N: usize>() {
-   |            - const parameter from outer function
+   |            - const parameter from outer item
 LL |     static a: [u8; N] = [0; N];
-   |                    ^ use of generic parameter from outer function
+   |                    ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/issue-65035-static-with-parent-generics.rs:21:29
    |
 LL | fn i<const N: usize>() {
-   |            - const parameter from outer function
+   |            - const parameter from outer item
 LL |     static a: [u8; N] = [0; N];
-   |                             ^ use of generic parameter from outer function
+   |                             ^ use of generic parameter from outer item
 
 error: aborting due to 5 previous errors
 
diff --git a/tests/ui/issues/issue-6642.rs b/tests/ui/resolve/issue-6642.rs
index f80f6fffe89..f80f6fffe89 100644
--- a/tests/ui/issues/issue-6642.rs
+++ b/tests/ui/resolve/issue-6642.rs
diff --git a/tests/ui/issues/issue-6642.stderr b/tests/ui/resolve/issue-6642.stderr
index 6668108d024..6668108d024 100644
--- a/tests/ui/issues/issue-6642.stderr
+++ b/tests/ui/resolve/issue-6642.stderr
diff --git a/tests/ui/resolve/resolve-type-param-in-item-in-trait.rs b/tests/ui/resolve/resolve-type-param-in-item-in-trait.rs
index c77a66524f7..2d5f34c62a6 100644
--- a/tests/ui/resolve/resolve-type-param-in-item-in-trait.rs
+++ b/tests/ui/resolve/resolve-type-param-in-item-in-trait.rs
@@ -6,7 +6,7 @@ trait TraitA<A> {
     fn outer(&self) {
         enum Foo<B> {
             Variance(A)
-                //~^ ERROR can't use generic parameters from outer function
+                //~^ ERROR can't use generic parameters from outer item
         }
     }
 }
@@ -14,21 +14,21 @@ trait TraitA<A> {
 trait TraitB<A> {
     fn outer(&self) {
         struct Foo<B>(A);
-                //~^ ERROR can't use generic parameters from outer function
+                //~^ ERROR can't use generic parameters from outer item
     }
 }
 
 trait TraitC<A> {
     fn outer(&self) {
         struct Foo<B> { a: A }
-                //~^ ERROR can't use generic parameters from outer function
+                //~^ ERROR can't use generic parameters from outer item
     }
 }
 
 trait TraitD<A> {
     fn outer(&self) {
         fn foo<B>(a: A) { }
-                //~^ ERROR can't use generic parameters from outer function
+                //~^ ERROR can't use generic parameters from outer item
     }
 }
 
diff --git a/tests/ui/resolve/resolve-type-param-in-item-in-trait.stderr b/tests/ui/resolve/resolve-type-param-in-item-in-trait.stderr
index 0a6d1cc3bcd..1ab56fdc504 100644
--- a/tests/ui/resolve/resolve-type-param-in-item-in-trait.stderr
+++ b/tests/ui/resolve/resolve-type-param-in-item-in-trait.stderr
@@ -1,46 +1,46 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/resolve-type-param-in-item-in-trait.rs:8:22
    |
 LL | trait TraitA<A> {
-   |              - type parameter from outer function
+   |              - type parameter from outer item
 LL |     fn outer(&self) {
 LL |         enum Foo<B> {
-   |                  - help: try using a local generic parameter instead: `A,`
+   |                  - help: try introducing a local generic parameter here: `A,`
 LL |             Variance(A)
-   |                      ^ use of generic parameter from outer function
+   |                      ^ use of generic parameter from outer item
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/resolve-type-param-in-item-in-trait.rs:16:23
    |
 LL | trait TraitB<A> {
-   |              - type parameter from outer function
+   |              - type parameter from outer item
 LL |     fn outer(&self) {
 LL |         struct Foo<B>(A);
-   |                    -  ^ use of generic parameter from outer function
+   |                    -  ^ use of generic parameter from outer item
    |                    |
-   |                    help: try using a local generic parameter instead: `A,`
+   |                    help: try introducing a local generic parameter here: `A,`
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/resolve-type-param-in-item-in-trait.rs:23:28
    |
 LL | trait TraitC<A> {
-   |              - type parameter from outer function
+   |              - type parameter from outer item
 LL |     fn outer(&self) {
 LL |         struct Foo<B> { a: A }
-   |                    -       ^ use of generic parameter from outer function
+   |                    -       ^ use of generic parameter from outer item
    |                    |
-   |                    help: try using a local generic parameter instead: `A,`
+   |                    help: try introducing a local generic parameter here: `A,`
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/resolve-type-param-in-item-in-trait.rs:30:22
    |
 LL | trait TraitD<A> {
-   |              - type parameter from outer function
+   |              - type parameter from outer item
 LL |     fn outer(&self) {
 LL |         fn foo<B>(a: A) { }
-   |                -     ^ use of generic parameter from outer function
+   |                -     ^ use of generic parameter from outer item
    |                |
-   |                help: try using a local generic parameter instead: `A,`
+   |                help: try introducing a local generic parameter here: `A,`
 
 error: aborting due to 4 previous errors
 
diff --git a/tests/ui/resolve/suggest-import-without-clobbering-attrs.fixed b/tests/ui/resolve/suggest-import-without-clobbering-attrs.fixed
new file mode 100644
index 00000000000..fc68884fe9c
--- /dev/null
+++ b/tests/ui/resolve/suggest-import-without-clobbering-attrs.fixed
@@ -0,0 +1,16 @@
+// run-rustfix
+// compile-flags: --cfg=whatever -Aunused
+
+use y::z;
+#[cfg(whatever)]
+use y::Whatever;
+
+mod y {
+    pub(crate) fn z() {}
+    pub(crate) struct Whatever;
+}
+
+fn main() {
+    z();
+    //~^ ERROR cannot find function `z` in this scope
+}
diff --git a/tests/ui/resolve/suggest-import-without-clobbering-attrs.rs b/tests/ui/resolve/suggest-import-without-clobbering-attrs.rs
new file mode 100644
index 00000000000..38a1095703b
--- /dev/null
+++ b/tests/ui/resolve/suggest-import-without-clobbering-attrs.rs
@@ -0,0 +1,15 @@
+// run-rustfix
+// compile-flags: --cfg=whatever -Aunused
+
+#[cfg(whatever)]
+use y::Whatever;
+
+mod y {
+    pub(crate) fn z() {}
+    pub(crate) struct Whatever;
+}
+
+fn main() {
+    z();
+    //~^ ERROR cannot find function `z` in this scope
+}
diff --git a/tests/ui/resolve/suggest-import-without-clobbering-attrs.stderr b/tests/ui/resolve/suggest-import-without-clobbering-attrs.stderr
new file mode 100644
index 00000000000..d3574851d5c
--- /dev/null
+++ b/tests/ui/resolve/suggest-import-without-clobbering-attrs.stderr
@@ -0,0 +1,14 @@
+error[E0425]: cannot find function `z` in this scope
+  --> $DIR/suggest-import-without-clobbering-attrs.rs:13:5
+   |
+LL |     z();
+   |     ^ not found in this scope
+   |
+help: consider importing this function
+   |
+LL + use y::z;
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0425`.
diff --git a/tests/ui/resolve/use-self-in-inner-fn.rs b/tests/ui/resolve/use-self-in-inner-fn.rs
index eccb315feb1..f4dfa4c40ab 100644
--- a/tests/ui/resolve/use-self-in-inner-fn.rs
+++ b/tests/ui/resolve/use-self-in-inner-fn.rs
@@ -4,9 +4,9 @@ impl A {
 //~^ NOTE `Self` type implicitly declared here, by this `impl`
     fn banana(&mut self) {
         fn peach(this: &Self) {
-        //~^ ERROR can't use generic parameters from outer function
-        //~| NOTE use of generic parameter from outer function
-        //~| NOTE use a type here instead
+        //~^ ERROR can't use generic parameters from outer item
+        //~| NOTE use of generic parameter from outer item
+        //~| NOTE refer to the type directly here instead
         }
     }
 }
diff --git a/tests/ui/resolve/use-self-in-inner-fn.stderr b/tests/ui/resolve/use-self-in-inner-fn.stderr
index 96609349924..832aaacaf49 100644
--- a/tests/ui/resolve/use-self-in-inner-fn.stderr
+++ b/tests/ui/resolve/use-self-in-inner-fn.stderr
@@ -1,4 +1,4 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/use-self-in-inner-fn.rs:6:25
    |
 LL | impl A {
@@ -7,8 +7,8 @@ LL | impl A {
 LL |         fn peach(this: &Self) {
    |                         ^^^^
    |                         |
-   |                         use of generic parameter from outer function
-   |                         use a type here instead
+   |                         use of generic parameter from outer item
+   |                         refer to the type directly here instead
 
 error: aborting due to previous error
 
diff --git a/tests/ui/rfcs/rfc-2008-non-exhaustive/enum.stderr b/tests/ui/rfcs/rfc-2008-non-exhaustive/enum.stderr
index 872cb9b8bc6..4e7f3098ab4 100644
--- a/tests/ui/rfcs/rfc-2008-non-exhaustive/enum.stderr
+++ b/tests/ui/rfcs/rfc-2008-non-exhaustive/enum.stderr
@@ -28,7 +28,8 @@ note: `NonExhaustiveEnum` defined here
    |
 LL | pub enum NonExhaustiveEnum {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
-   = note: the matched value is of type `NonExhaustiveEnum`, which is marked as non-exhaustive
+   = note: the matched value is of type `NonExhaustiveEnum`
+   = note: `NonExhaustiveEnum` is marked as non-exhaustive, so a wildcard `_` is necessary to match exhaustively
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
 LL ~         NonExhaustiveEnum::Struct { .. } => "third",
@@ -46,7 +47,7 @@ note: `NonExhaustiveEnum` defined here
    |
 LL | pub enum NonExhaustiveEnum {
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
-   = note: the matched value is of type `NonExhaustiveEnum`, which is marked as non-exhaustive
+   = note: the matched value is of type `NonExhaustiveEnum`
 help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
    |
 LL ~     match enum_unit {
diff --git a/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.rs b/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.rs
index 3beb20f0a37..b8c0eb3e6d6 100644
--- a/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.rs
+++ b/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.rs
@@ -8,14 +8,10 @@ fn _if_let_guard() {
         //~^ ERROR `if let` guards are experimental
 
         () if (let 0 = 1) => {}
-        //~^ ERROR `let` expressions in this position are unstable
-        //~| ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
+        //~^ ERROR expected expression, found `let` statement
 
         () if (((let 0 = 1))) => {}
-        //~^ ERROR `let` expressions in this position are unstable
-        //~| ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
+        //~^ ERROR expected expression, found `let` statement
 
         () if true && let 0 = 1 => {}
         //~^ ERROR `if let` guards are experimental
@@ -26,36 +22,22 @@ fn _if_let_guard() {
         //~| ERROR `let` expressions in this position are unstable
 
         () if (let 0 = 1) && true => {}
-        //~^ ERROR `let` expressions in this position are unstable
-        //~| ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
+        //~^ ERROR expected expression, found `let` statement
 
         () if true && (let 0 = 1) => {}
-        //~^ ERROR `let` expressions in this position are unstable
-        //~| ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
+        //~^ ERROR expected expression, found `let` statement
 
         () if (let 0 = 1) && (let 0 = 1) => {}
-        //~^ ERROR `let` expressions in this position are unstable
-        //~| ERROR `let` expressions in this position are unstable
+        //~^ ERROR expected expression, found `let` statement
         //~| ERROR expected expression, found `let` statement
-        //~| ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
-        //~| ERROR `let` expressions are not supported here
 
         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
         //~^ ERROR `if let` guards are experimental
         //~| ERROR `let` expressions in this position are unstable
         //~| ERROR `let` expressions in this position are unstable
-        //~| ERROR `let` expressions in this position are unstable
-        //~| ERROR `let` expressions in this position are unstable
-        //~| ERROR `let` expressions in this position are unstable
         //~| ERROR expected expression, found `let` statement
         //~| ERROR expected expression, found `let` statement
         //~| ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
-        //~| ERROR `let` expressions are not supported here
-        //~| ERROR `let` expressions are not supported here
 
 
         () if let Range { start: _, end: _ } = (true..true) && false => {}
@@ -76,13 +58,9 @@ fn _macros() {
         }
     }
     use_expr!((let 0 = 1 && 0 == 0));
-    //~^ ERROR `let` expressions in this position are unstable
-    //~| ERROR expected expression, found `let` statement
-    //~| ERROR `let` expressions are not supported here
+    //~^ ERROR expected expression, found `let` statement
     use_expr!((let 0 = 1));
-    //~^ ERROR `let` expressions in this position are unstable
-    //~| ERROR expected expression, found `let` statement
-    //~| ERROR `let` expressions are not supported here
+    //~^ ERROR expected expression, found `let` statement
     match () {
         #[cfg(FALSE)]
         () if let 0 = 1 => {}
diff --git a/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.stderr b/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.stderr
index dc182ce464a..62534b555b2 100644
--- a/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.stderr
+++ b/tests/ui/rfcs/rfc-2294-if-let-guard/feature-gate.stderr
@@ -2,87 +2,6 @@ error: expected expression, found `let` statement
   --> $DIR/feature-gate.rs:10:16
    |
 LL |         () if (let 0 = 1) => {}
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:15:18
-   |
-LL |         () if (((let 0 = 1))) => {}
-   |                  ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:28:16
-   |
-LL |         () if (let 0 = 1) && true => {}
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:33:24
-   |
-LL |         () if true && (let 0 = 1) => {}
-   |                        ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:38:16
-   |
-LL |         () if (let 0 = 1) && (let 0 = 1) => {}
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:38:31
-   |
-LL |         () if (let 0 = 1) && (let 0 = 1) => {}
-   |                               ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:46:42
-   |
-LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
-   |                                          ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:46:55
-   |
-LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
-   |                                                       ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:46:68
-   |
-LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
-   |                                                                    ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:78:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:82:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^
-
-error: no rules expected the token `let`
-  --> $DIR/feature-gate.rs:92:15
-   |
-LL |     macro_rules! use_expr {
-   |     --------------------- when calling this macro
-...
-LL |     use_expr!(let 0 = 1);
-   |               ^^^ no rules expected this token in macro call
-   |
-note: while trying to match meta-variable `$e:expr`
-  --> $DIR/feature-gate.rs:71:10
-   |
-LL |         ($e:expr) => {
-   |          ^^^^^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:10:16
-   |
-LL |         () if (let 0 = 1) => {}
    |                ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
@@ -92,135 +11,140 @@ note: `let`s wrapped in parentheses are not supported in a context with let chai
 LL |         () if (let 0 = 1) => {}
    |                ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:15:18
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:13:18
    |
 LL |         () if (((let 0 = 1))) => {}
    |                  ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:15:18
+  --> $DIR/feature-gate.rs:13:18
    |
 LL |         () if (((let 0 = 1))) => {}
    |                  ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:28:16
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:24:16
    |
 LL |         () if (let 0 = 1) && true => {}
    |                ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:28:16
+  --> $DIR/feature-gate.rs:24:16
    |
 LL |         () if (let 0 = 1) && true => {}
    |                ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:33:24
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:27:24
    |
 LL |         () if true && (let 0 = 1) => {}
    |                        ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:33:24
+  --> $DIR/feature-gate.rs:27:24
    |
 LL |         () if true && (let 0 = 1) => {}
    |                        ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:38:16
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:30:16
    |
 LL |         () if (let 0 = 1) && (let 0 = 1) => {}
    |                ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:38:16
+  --> $DIR/feature-gate.rs:30:16
    |
 LL |         () if (let 0 = 1) && (let 0 = 1) => {}
    |                ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:38:31
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:30:31
    |
 LL |         () if (let 0 = 1) && (let 0 = 1) => {}
    |                               ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:38:31
+  --> $DIR/feature-gate.rs:30:31
    |
 LL |         () if (let 0 = 1) && (let 0 = 1) => {}
    |                               ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:46:42
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:34:42
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                                          ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:46:42
+  --> $DIR/feature-gate.rs:34:42
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:46:55
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:34:55
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                                                       ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:46:42
+  --> $DIR/feature-gate.rs:34:42
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:46:68
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:34:68
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                                                                    ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:46:42
+  --> $DIR/feature-gate.rs:34:42
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:78:16
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:60:16
    |
 LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^
+   |                ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:78:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/feature-gate.rs:82:16
+error: expected expression, found `let` statement
+  --> $DIR/feature-gate.rs:62:16
    |
 LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
+   |                ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/feature-gate.rs:82:16
+
+error: no rules expected the token `let`
+  --> $DIR/feature-gate.rs:70:15
    |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
+LL |     macro_rules! use_expr {
+   |     --------------------- when calling this macro
+...
+LL |     use_expr!(let 0 = 1);
+   |               ^^^ no rules expected this token in macro call
+   |
+note: while trying to match meta-variable `$e:expr`
+  --> $DIR/feature-gate.rs:53:10
+   |
+LL |         ($e:expr) => {
+   |          ^^^^^^^
 
 error[E0658]: `if let` guards are experimental
   --> $DIR/feature-gate.rs:7:12
@@ -233,7 +157,7 @@ LL |         () if let 0 = 1 => {}
    = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
 
 error[E0658]: `if let` guards are experimental
-  --> $DIR/feature-gate.rs:20:12
+  --> $DIR/feature-gate.rs:16:12
    |
 LL |         () if true && let 0 = 1 => {}
    |            ^^^^^^^^^^^^^^^^^^^^
@@ -243,7 +167,7 @@ LL |         () if true && let 0 = 1 => {}
    = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
 
 error[E0658]: `if let` guards are experimental
-  --> $DIR/feature-gate.rs:24:12
+  --> $DIR/feature-gate.rs:20:12
    |
 LL |         () if let 0 = 1 && true => {}
    |            ^^^^^^^^^^^^^^^^^^^^
@@ -253,7 +177,7 @@ LL |         () if let 0 = 1 && true => {}
    = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
 
 error[E0658]: `if let` guards are experimental
-  --> $DIR/feature-gate.rs:46:12
+  --> $DIR/feature-gate.rs:34:12
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -263,7 +187,7 @@ LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 =
    = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
 
 error[E0658]: `if let` guards are experimental
-  --> $DIR/feature-gate.rs:61:12
+  --> $DIR/feature-gate.rs:43:12
    |
 LL |         () if let Range { start: _, end: _ } = (true..true) && false => {}
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -273,7 +197,7 @@ LL |         () if let Range { start: _, end: _ } = (true..true) && false => {}
    = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
 
 error[E0658]: `if let` guards are experimental
-  --> $DIR/feature-gate.rs:88:12
+  --> $DIR/feature-gate.rs:66:12
    |
 LL |         () if let 0 = 1 => {}
    |            ^^^^^^^^^^^^
@@ -283,25 +207,7 @@ LL |         () if let 0 = 1 => {}
    = help: you can write `if matches!(<expr>, <pattern>)` instead of `if let <pattern> = <expr>`
 
 error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:10:16
-   |
-LL |         () if (let 0 = 1) => {}
-   |                ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:15:18
-   |
-LL |         () if (((let 0 = 1))) => {}
-   |                  ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:20:23
+  --> $DIR/feature-gate.rs:16:23
    |
 LL |         () if true && let 0 = 1 => {}
    |                       ^^^^^^^^^
@@ -310,7 +216,7 @@ LL |         () if true && let 0 = 1 => {}
    = help: add `#![feature(let_chains)]` to the crate attributes to enable
 
 error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:24:15
+  --> $DIR/feature-gate.rs:20:15
    |
 LL |         () if let 0 = 1 && true => {}
    |               ^^^^^^^^^
@@ -319,43 +225,7 @@ LL |         () if let 0 = 1 && true => {}
    = help: add `#![feature(let_chains)]` to the crate attributes to enable
 
 error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:28:16
-   |
-LL |         () if (let 0 = 1) && true => {}
-   |                ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:33:24
-   |
-LL |         () if true && (let 0 = 1) => {}
-   |                        ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:38:16
-   |
-LL |         () if (let 0 = 1) && (let 0 = 1) => {}
-   |                ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:38:31
-   |
-LL |         () if (let 0 = 1) && (let 0 = 1) => {}
-   |                               ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:46:15
+  --> $DIR/feature-gate.rs:34:15
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |               ^^^^^^^^^
@@ -364,7 +234,7 @@ LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 =
    = help: add `#![feature(let_chains)]` to the crate attributes to enable
 
 error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:46:28
+  --> $DIR/feature-gate.rs:34:28
    |
 LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
    |                            ^^^^^^^^^
@@ -373,34 +243,7 @@ LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 =
    = help: add `#![feature(let_chains)]` to the crate attributes to enable
 
 error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:46:42
-   |
-LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
-   |                                          ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:46:55
-   |
-LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
-   |                                                       ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:46:68
-   |
-LL |         () if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) => {}
-   |                                                                    ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:61:15
+  --> $DIR/feature-gate.rs:43:15
    |
 LL |         () if let Range { start: _, end: _ } = (true..true) && false => {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -408,24 +251,6 @@ LL |         () if let Range { start: _, end: _ } = (true..true) && false => {}
    = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
    = help: add `#![feature(let_chains)]` to the crate attributes to enable
 
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:78:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:82:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error: aborting due to 45 previous errors
+error: aborting due to 23 previous errors
 
 For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/rfcs/rfc-2294-if-let-guard/macro-expanded.stderr b/tests/ui/rfcs/rfc-2294-if-let-guard/macro-expanded.stderr
index 41a20bf8ae1..00c1c303d2b 100644
--- a/tests/ui/rfcs/rfc-2294-if-let-guard/macro-expanded.stderr
+++ b/tests/ui/rfcs/rfc-2294-if-let-guard/macro-expanded.stderr
@@ -7,6 +7,7 @@ LL |     ($e:expr) => { let Some(x) = $e }
 LL |         () if m!(Some(5)) => {}
    |               ----------- in this macro invocation
    |
+   = note: only supported directly in conditions of `if` and `while` expressions
    = note: this error originates in the macro `m` (in Nightly builds, run with -Z macro-backtrace for more info)
 
 error: aborting due to previous error
diff --git a/tests/ui/rfcs/rfc-2294-if-let-guard/parens.rs b/tests/ui/rfcs/rfc-2294-if-let-guard/parens.rs
index 9cb27c73b14..f12824db9c0 100644
--- a/tests/ui/rfcs/rfc-2294-if-let-guard/parens.rs
+++ b/tests/ui/rfcs/rfc-2294-if-let-guard/parens.rs
@@ -19,9 +19,7 @@ fn main() {
         () if let 0 = 1 => {}
         () if (let 0 = 1) => {}
         //~^ ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
         () if (((let 0 = 1))) => {}
         //~^ ERROR expected expression, found `let` statement
-        //~| ERROR `let` expressions are not supported here
     }
 }
diff --git a/tests/ui/rfcs/rfc-2294-if-let-guard/parens.stderr b/tests/ui/rfcs/rfc-2294-if-let-guard/parens.stderr
index 85df360daab..0c16d9c5442 100644
--- a/tests/ui/rfcs/rfc-2294-if-let-guard/parens.stderr
+++ b/tests/ui/rfcs/rfc-2294-if-let-guard/parens.stderr
@@ -2,27 +2,29 @@ error: expected expression, found `let` statement
   --> $DIR/parens.rs:10:16
    |
 LL |         () if (let 0 = 1) => {}
-   |                ^^^
+   |                ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/parens.rs:10:16
+   |
+LL |         () if (let 0 = 1) => {}
+   |                ^^^^^^^^^
 
 error: expected expression, found `let` statement
   --> $DIR/parens.rs:12:18
    |
 LL |         () if (((let 0 = 1))) => {}
-   |                  ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/parens.rs:20:16
+   |                  ^^^^^^^^^
    |
-LL |         () if (let 0 = 1) => {}
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/parens.rs:23:18
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/parens.rs:12:18
    |
 LL |         () if (((let 0 = 1))) => {}
-   |                  ^^^
+   |                  ^^^^^^^^^
 
-error: `let` expressions are not supported here
+error: expected expression, found `let` statement
   --> $DIR/parens.rs:20:16
    |
 LL |         () if (let 0 = 1) => {}
@@ -35,18 +37,18 @@ note: `let`s wrapped in parentheses are not supported in a context with let chai
 LL |         () if (let 0 = 1) => {}
    |                ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/parens.rs:23:18
+error: expected expression, found `let` statement
+  --> $DIR/parens.rs:22:18
    |
 LL |         () if (((let 0 = 1))) => {}
    |                  ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/parens.rs:23:18
+  --> $DIR/parens.rs:22:18
    |
 LL |         () if (((let 0 = 1))) => {}
    |                  ^^^^^^^^^
 
-error: aborting due to 6 previous errors
+error: aborting due to 4 previous errors
 
diff --git a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr
index b0ac5dc44ad..e08ffe42d6a 100644
--- a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr
+++ b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.mir.stderr
@@ -13,7 +13,6 @@ LL |     let foo: fn() = foo;
                  found fn item `fn() {foo}`
    = note: fn items are distinct from fn pointers
    = note: functions with `#[target_feature]` can only be coerced to `unsafe` function pointers
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 help: consider casting to a fn pointer
    |
 LL |     let foo: fn() = foo as fn();
diff --git a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr
index b0ac5dc44ad..e08ffe42d6a 100644
--- a/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr
+++ b/tests/ui/rfcs/rfc-2396-target_feature-11/fn-ptr.thir.stderr
@@ -13,7 +13,6 @@ LL |     let foo: fn() = foo;
                  found fn item `fn() {foo}`
    = note: fn items are distinct from fn pointers
    = note: functions with `#[target_feature]` can only be coerced to `unsafe` function pointers
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 help: consider casting to a fn pointer
    |
 LL |     let foo: fn() = foo as fn();
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.rs
index e6dee2a1d06..cb3be59bee0 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.rs
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.rs
@@ -3,7 +3,7 @@
 fn let_or_guard(x: Result<Option<i32>, ()>) {
     match x {
         Ok(opt) if let Some(4) = opt || false  => {}
-        //~^ ERROR `let` expressions are not supported here
+        //~^ ERROR expected expression, found `let` statement
         _ => {}
     }
 }
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.stderr
index 26850998cc4..4b85fdd5050 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.stderr
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/ast-validate-guards.stderr
@@ -1,4 +1,4 @@
-error: `let` expressions are not supported here
+error: expected expression, found `let` statement
   --> $DIR/ast-validate-guards.rs:5:20
    |
 LL |         Ok(opt) if let Some(4) = opt || false  => {}
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.rs
new file mode 100644
index 00000000000..530458064b2
--- /dev/null
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.rs
@@ -0,0 +1,14 @@
+// Regression test for #104172
+
+const N: usize = {
+    struct U;
+    !let y = 42;
+    //~^ ERROR expected expression, found `let` statement
+    3
+};
+
+struct S {
+    x: [(); N]
+}
+
+fn main() {}
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.stderr
new file mode 100644
index 00000000000..3eaccde3b74
--- /dev/null
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/avoid-invalid-mir.stderr
@@ -0,0 +1,10 @@
+error: expected expression, found `let` statement
+  --> $DIR/avoid-invalid-mir.rs:5:6
+   |
+LL |     !let y = 42;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: aborting due to previous error
+
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.rs
index e0dded15217..2c0571a7bdd 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.rs
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.rs
@@ -1,19 +1,18 @@
+// check-pass
+
 fn and_chain() {
     let z;
     if true && { z = 3; true} && z == 3 {}
-    //~^ ERROR E0381
 }
 
 fn and_chain_2() {
     let z;
     true && { z = 3; true} && z == 3;
-    //~^ ERROR E0381
 }
 
 fn or_chain() {
     let z;
     if false || { z = 3; false} || z == 3 {}
-    //~^ ERROR E0381
 }
 
 fn main() {
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.stderr
deleted file mode 100644
index 30d5a6779fc..00000000000
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/chains-without-let.stderr
+++ /dev/null
@@ -1,33 +0,0 @@
-error[E0381]: used binding `z` is possibly-uninitialized
-  --> $DIR/chains-without-let.rs:3:34
-   |
-LL |     let z;
-   |         - binding declared here but left uninitialized
-LL |     if true && { z = 3; true} && z == 3 {}
-   |                  -----           ^ `z` used here but it is possibly-uninitialized
-   |                  |
-   |                  binding initialized here in some conditions
-
-error[E0381]: used binding `z` is possibly-uninitialized
-  --> $DIR/chains-without-let.rs:9:31
-   |
-LL |     let z;
-   |         - binding declared here but left uninitialized
-LL |     true && { z = 3; true} && z == 3;
-   |               -----           ^ `z` used here but it is possibly-uninitialized
-   |               |
-   |               binding initialized here in some conditions
-
-error[E0381]: used binding `z` is possibly-uninitialized
-  --> $DIR/chains-without-let.rs:15:36
-   |
-LL |     let z;
-   |         - binding declared here but left uninitialized
-LL |     if false || { z = 3; false} || z == 3 {}
-   |                   -----            ^ `z` used here but it is possibly-uninitialized
-   |                   |
-   |                   binding initialized here in some conditions
-
-error: aborting due to 3 previous errors
-
-For more information about this error, try `rustc --explain E0381`.
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.rs
new file mode 100644
index 00000000000..096036bb133
--- /dev/null
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.rs
@@ -0,0 +1,340 @@
+// Check that we don't suggest enabling a feature for code that's
+// not accepted even with that feature.
+
+#![allow(irrefutable_let_patterns)]
+
+use std::ops::Range;
+
+fn main() {}
+
+fn _if() {
+    if (let 0 = 1) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if (((let 0 = 1))) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if (let 0 = 1) && true {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if true && (let 0 = 1) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if (let 0 = 1) && (let 0 = 1) {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+
+    if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+}
+
+fn _while() {
+    while (let 0 = 1) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while (((let 0 = 1))) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while (let 0 = 1) && true {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while true && (let 0 = 1) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while (let 0 = 1) && (let 0 = 1) {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+
+    while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+}
+
+fn _macros() {
+    macro_rules! use_expr {
+        ($e:expr) => {
+            if $e {}
+            while $e {}
+        }
+    }
+    use_expr!((let 0 = 1 && 0 == 0));
+    //~^ ERROR expected expression, found `let` statement
+    use_expr!((let 0 = 1));
+    //~^ ERROR expected expression, found `let` statement
+}
+
+fn nested_within_if_expr() {
+    if &let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if !let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+    if *let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+    if -let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+
+    fn _check_try_binds_tighter() -> Result<(), ()> {
+        if let 0 = 0? {}
+        //~^ ERROR the `?` operator can only be applied to values that implement `Try`
+        Ok(())
+    }
+    if (let 0 = 0)? {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if true || let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+    if (true || let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    if true && (true || let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    if true || (true && let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    let mut x = true;
+    if x = let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+
+    if true..(let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+    if ..(let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    if (let 0 = 0).. {}
+    //~^ ERROR expected expression, found `let` statement
+
+    // Binds as `(let ... = true)..true &&/|| false`.
+    if let Range { start: _, end: _ } = true..true && false {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+    if let Range { start: _, end: _ } = true..true || false {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+
+    // Binds as `(let Range { start: F, end } = F)..(|| true)`.
+    const F: fn() -> bool = || true;
+    if let Range { start: F, end } = F..|| true {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+
+    // Binds as `(let Range { start: true, end } = t)..(&&false)`.
+    let t = &&true;
+    if let Range { start: true, end } = t..&&false {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+
+    if let true = let true = true {}
+    //~^ ERROR expected expression, found `let` statement
+}
+
+fn nested_within_while_expr() {
+    while &let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while !let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+    while *let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+    while -let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+
+    fn _check_try_binds_tighter() -> Result<(), ()> {
+        while let 0 = 0? {}
+        //~^ ERROR the `?` operator can only be applied to values that implement `Try`
+        Ok(())
+    }
+    while (let 0 = 0)? {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while true || let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+    while (true || let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    while true && (true || let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    while true || (true && let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+
+    let mut x = true;
+    while x = let 0 = 0 {}
+    //~^ ERROR expected expression, found `let` statement
+
+    while true..(let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+    while ..(let 0 = 0) {}
+    //~^ ERROR expected expression, found `let` statement
+    while (let 0 = 0).. {}
+    //~^ ERROR expected expression, found `let` statement
+
+    // Binds as `(let ... = true)..true &&/|| false`.
+    while let Range { start: _, end: _ } = true..true && false {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+    while let Range { start: _, end: _ } = true..true || false {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+
+    // Binds as `(let Range { start: F, end } = F)..(|| true)`.
+    const F: fn() -> bool = || true;
+    while let Range { start: F, end } = F..|| true {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+
+    // Binds as `(let Range { start: true, end } = t)..(&&false)`.
+    let t = &&true;
+    while let Range { start: true, end } = t..&&false {}
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR mismatched types
+
+    while let true = let true = true {}
+    //~^ ERROR expected expression, found `let` statement
+}
+
+fn not_error_because_clarified_intent() {
+    if let Range { start: _, end: _ } = (true..true || false) { }
+
+    if let Range { start: _, end: _ } = (true..true && false) { }
+
+    while let Range { start: _, end: _ } = (true..true || false) { }
+
+    while let Range { start: _, end: _ } = (true..true && false) { }
+}
+
+fn outside_if_and_while_expr() {
+    &let 0 = 0;
+    //~^ ERROR expected expression, found `let` statement
+
+    !let 0 = 0;
+    //~^ ERROR expected expression, found `let` statement
+    *let 0 = 0;
+    //~^ ERROR expected expression, found `let` statement
+    -let 0 = 0;
+    //~^ ERROR expected expression, found `let` statement
+    let _ = let _ = 3;
+    //~^ ERROR expected expression, found `let` statement
+
+    fn _check_try_binds_tighter() -> Result<(), ()> {
+        let 0 = 0?;
+        //~^ ERROR the `?` operator can only be applied to values that implement `Try`
+        Ok(())
+    }
+    (let 0 = 0)?;
+    //~^ ERROR expected expression, found `let` statement
+
+    true || let 0 = 0;
+    //~^ ERROR expected expression, found `let` statement
+    (true || let 0 = 0);
+    //~^ ERROR expected expression, found `let` statement
+    true && (true || let 0 = 0);
+    //~^ ERROR expected expression, found `let` statement
+
+    let mut x = true;
+    x = let 0 = 0;
+    //~^ ERROR expected expression, found `let` statement
+
+    true..(let 0 = 0);
+    //~^ ERROR expected expression, found `let` statement
+    ..(let 0 = 0);
+    //~^ ERROR expected expression, found `let` statement
+    (let 0 = 0)..;
+    //~^ ERROR expected expression, found `let` statement
+
+    (let Range { start: _, end: _ } = true..true || false);
+    //~^ ERROR mismatched types
+    //~| ERROR expected expression, found `let` statement
+
+    (let true = let true = true);
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+
+    {
+        #[cfg(FALSE)]
+        let x = true && let y = 1;
+        //~^ ERROR expected expression, found `let` statement
+    }
+
+    #[cfg(FALSE)]
+    {
+        [1, 2, 3][let _ = ()]
+        //~^ ERROR expected expression, found `let` statement
+    }
+
+    // Check function tail position.
+    &let 0 = 0
+    //~^ ERROR expected expression, found `let` statement
+}
+
+// Let's make sure that `let` inside const generic arguments are considered.
+fn inside_const_generic_arguments() {
+    struct A<const B: bool>;
+    impl<const B: bool> A<{B}> { const O: u32 = 5; }
+
+    if let A::<{
+        true && let 1 = 1
+        //~^ ERROR expected expression, found `let` statement
+    }>::O = 5 {}
+
+    while let A::<{
+        true && let 1 = 1
+        //~^ ERROR expected expression, found `let` statement
+    }>::O = 5 {}
+
+    if A::<{
+        true && let 1 = 1
+        //~^ ERROR expected expression, found `let` statement
+    }>::O == 5 {}
+
+    // In the cases above we have `ExprKind::Block` to help us out.
+    // Below however, we would not have a block and so an implementation might go
+    // from visiting expressions to types without banning `let` expressions down the tree.
+    // This tests ensures that we are not caught by surprise should the parser
+    // admit non-IDENT expressions in const generic arguments.
+
+    if A::<
+        true && let 1 = 1
+        //~^ ERROR expressions must be enclosed in braces
+        //~| ERROR expected expression, found `let` statement
+    >::O == 5 {}
+}
+
+fn with_parenthesis() {
+    let opt = Some(Some(1i32));
+
+    if (let Some(a) = opt && true) {
+    //~^ ERROR expected expression, found `let` statement
+    }
+
+    if (let Some(a) = opt) && true {
+    //~^ ERROR expected expression, found `let` statement
+    }
+    if (let Some(a) = opt) && (let Some(b) = a) {
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+    }
+
+    if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+    }
+    if (let Some(a) = opt && (let Some(b) = a)) && true {
+    //~^ ERROR expected expression, found `let` statement
+    //~| ERROR expected expression, found `let` statement
+    }
+    if (let Some(a) = opt && (true)) && true {
+    //~^ ERROR expected expression, found `let` statement
+    }
+
+    #[cfg(FALSE)]
+    let x = (true && let y = 1);
+    //~^ ERROR expected expression, found `let` statement
+
+    #[cfg(FALSE)]
+    {
+        ([1, 2, 3][let _ = ()])
+        //~^ ERROR expected expression, found `let` statement
+    }
+}
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.stderr
new file mode 100644
index 00000000000..31f389512ed
--- /dev/null
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions-without-feature-gate.stderr
@@ -0,0 +1,1021 @@
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:11:9
+   |
+LL |     if (let 0 = 1) {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:11:9
+   |
+LL |     if (let 0 = 1) {}
+   |         ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:14:11
+   |
+LL |     if (((let 0 = 1))) {}
+   |           ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:14:11
+   |
+LL |     if (((let 0 = 1))) {}
+   |           ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:17:9
+   |
+LL |     if (let 0 = 1) && true {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:17:9
+   |
+LL |     if (let 0 = 1) && true {}
+   |         ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:20:17
+   |
+LL |     if true && (let 0 = 1) {}
+   |                 ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:20:17
+   |
+LL |     if true && (let 0 = 1) {}
+   |                 ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:23:9
+   |
+LL |     if (let 0 = 1) && (let 0 = 1) {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:23:9
+   |
+LL |     if (let 0 = 1) && (let 0 = 1) {}
+   |         ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:23:24
+   |
+LL |     if (let 0 = 1) && (let 0 = 1) {}
+   |                        ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:23:24
+   |
+LL |     if (let 0 = 1) && (let 0 = 1) {}
+   |                        ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:27:9
+   |
+LL |     if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:27:9
+   |
+LL |     if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:27:22
+   |
+LL |     if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |                      ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:27:9
+   |
+LL |     if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:27:35
+   |
+LL |     if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |                                   ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:27:9
+   |
+LL |     if (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:34:12
+   |
+LL |     while (let 0 = 1) {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:34:12
+   |
+LL |     while (let 0 = 1) {}
+   |            ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:37:14
+   |
+LL |     while (((let 0 = 1))) {}
+   |              ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:37:14
+   |
+LL |     while (((let 0 = 1))) {}
+   |              ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:40:12
+   |
+LL |     while (let 0 = 1) && true {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:40:12
+   |
+LL |     while (let 0 = 1) && true {}
+   |            ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:43:20
+   |
+LL |     while true && (let 0 = 1) {}
+   |                    ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:43:20
+   |
+LL |     while true && (let 0 = 1) {}
+   |                    ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:46:12
+   |
+LL |     while (let 0 = 1) && (let 0 = 1) {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:46:12
+   |
+LL |     while (let 0 = 1) && (let 0 = 1) {}
+   |            ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:46:27
+   |
+LL |     while (let 0 = 1) && (let 0 = 1) {}
+   |                           ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:46:27
+   |
+LL |     while (let 0 = 1) && (let 0 = 1) {}
+   |                           ^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:50:12
+   |
+LL |     while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:50:12
+   |
+LL |     while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:50:25
+   |
+LL |     while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |                         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:50:12
+   |
+LL |     while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:50:38
+   |
+LL |     while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |                                      ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:50:12
+   |
+LL |     while (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:70:9
+   |
+LL |     if &let 0 = 0 {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:73:9
+   |
+LL |     if !let 0 = 0 {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:75:9
+   |
+LL |     if *let 0 = 0 {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:77:9
+   |
+LL |     if -let 0 = 0 {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:85:9
+   |
+LL |     if (let 0 = 0)? {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:88:16
+   |
+LL |     if true || let 0 = 0 {}
+   |                ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `||` operators are not supported in let chain expressions
+  --> $DIR/disallowed-positions-without-feature-gate.rs:88:13
+   |
+LL |     if true || let 0 = 0 {}
+   |             ^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:90:17
+   |
+LL |     if (true || let 0 = 0) {}
+   |                 ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:92:25
+   |
+LL |     if true && (true || let 0 = 0) {}
+   |                         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:94:25
+   |
+LL |     if true || (true && let 0 = 0) {}
+   |                         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:98:12
+   |
+LL |     if x = let 0 = 0 {}
+   |            ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:101:15
+   |
+LL |     if true..(let 0 = 0) {}
+   |               ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:104:11
+   |
+LL |     if ..(let 0 = 0) {}
+   |           ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:106:9
+   |
+LL |     if (let 0 = 0).. {}
+   |         ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:110:8
+   |
+LL |     if let Range { start: _, end: _ } = true..true && false {}
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:113:8
+   |
+LL |     if let Range { start: _, end: _ } = true..true || false {}
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:119:8
+   |
+LL |     if let Range { start: F, end } = F..|| true {}
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:125:8
+   |
+LL |     if let Range { start: true, end } = t..&&false {}
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:129:19
+   |
+LL |     if let true = let true = true {}
+   |                   ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:134:12
+   |
+LL |     while &let 0 = 0 {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:137:12
+   |
+LL |     while !let 0 = 0 {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:139:12
+   |
+LL |     while *let 0 = 0 {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:141:12
+   |
+LL |     while -let 0 = 0 {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:149:12
+   |
+LL |     while (let 0 = 0)? {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:152:19
+   |
+LL |     while true || let 0 = 0 {}
+   |                   ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `||` operators are not supported in let chain expressions
+  --> $DIR/disallowed-positions-without-feature-gate.rs:152:16
+   |
+LL |     while true || let 0 = 0 {}
+   |                ^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:154:20
+   |
+LL |     while (true || let 0 = 0) {}
+   |                    ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:156:28
+   |
+LL |     while true && (true || let 0 = 0) {}
+   |                            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:158:28
+   |
+LL |     while true || (true && let 0 = 0) {}
+   |                            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:162:15
+   |
+LL |     while x = let 0 = 0 {}
+   |               ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:165:18
+   |
+LL |     while true..(let 0 = 0) {}
+   |                  ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:168:14
+   |
+LL |     while ..(let 0 = 0) {}
+   |              ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:170:12
+   |
+LL |     while (let 0 = 0).. {}
+   |            ^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:174:11
+   |
+LL |     while let Range { start: _, end: _ } = true..true && false {}
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:177:11
+   |
+LL |     while let Range { start: _, end: _ } = true..true || false {}
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:183:11
+   |
+LL |     while let Range { start: F, end } = F..|| true {}
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:189:11
+   |
+LL |     while let Range { start: true, end } = t..&&false {}
+   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:193:22
+   |
+LL |     while let true = let true = true {}
+   |                      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:208:6
+   |
+LL |     &let 0 = 0;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:211:6
+   |
+LL |     !let 0 = 0;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:213:6
+   |
+LL |     *let 0 = 0;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:215:6
+   |
+LL |     -let 0 = 0;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:217:13
+   |
+LL |     let _ = let _ = 3;
+   |             ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:225:6
+   |
+LL |     (let 0 = 0)?;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:228:13
+   |
+LL |     true || let 0 = 0;
+   |             ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:230:14
+   |
+LL |     (true || let 0 = 0);
+   |              ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:232:22
+   |
+LL |     true && (true || let 0 = 0);
+   |                      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:236:9
+   |
+LL |     x = let 0 = 0;
+   |         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:239:12
+   |
+LL |     true..(let 0 = 0);
+   |            ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:241:8
+   |
+LL |     ..(let 0 = 0);
+   |        ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:243:6
+   |
+LL |     (let 0 = 0)..;
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:246:6
+   |
+LL |     (let Range { start: _, end: _ } = true..true || false);
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:250:6
+   |
+LL |     (let true = let true = true);
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:250:17
+   |
+LL |     (let true = let true = true);
+   |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:256:25
+   |
+LL |         let x = true && let y = 1;
+   |                         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:262:19
+   |
+LL |         [1, 2, 3][let _ = ()]
+   |                   ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:267:6
+   |
+LL |     &let 0 = 0
+   |      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:277:17
+   |
+LL |         true && let 1 = 1
+   |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:282:17
+   |
+LL |         true && let 1 = 1
+   |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:287:17
+   |
+LL |         true && let 1 = 1
+   |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:298:17
+   |
+LL |         true && let 1 = 1
+   |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expressions must be enclosed in braces to be used as const generic arguments
+  --> $DIR/disallowed-positions-without-feature-gate.rs:298:9
+   |
+LL |         true && let 1 = 1
+   |         ^^^^^^^^^^^^^^^^^
+   |
+help: enclose the `const` expression in braces
+   |
+LL |         { true && let 1 = 1 }
+   |         +                   +
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:307:9
+   |
+LL |     if (let Some(a) = opt && true) {
+   |         ^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:307:9
+   |
+LL |     if (let Some(a) = opt && true) {
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:311:9
+   |
+LL |     if (let Some(a) = opt) && true {
+   |         ^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:311:9
+   |
+LL |     if (let Some(a) = opt) && true {
+   |         ^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:314:9
+   |
+LL |     if (let Some(a) = opt) && (let Some(b) = a) {
+   |         ^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:314:9
+   |
+LL |     if (let Some(a) = opt) && (let Some(b) = a) {
+   |         ^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:314:32
+   |
+LL |     if (let Some(a) = opt) && (let Some(b) = a) {
+   |                                ^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:314:32
+   |
+LL |     if (let Some(a) = opt) && (let Some(b) = a) {
+   |                                ^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:319:9
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
+   |         ^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:319:9
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:319:31
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
+   |                               ^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:319:31
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
+   |                               ^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:323:9
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
+   |         ^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:323:9
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:323:31
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
+   |                               ^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:323:31
+   |
+LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
+   |                               ^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:327:9
+   |
+LL |     if (let Some(a) = opt && (true)) && true {
+   |         ^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+note: `let`s wrapped in parentheses are not supported in a context with let chains
+  --> $DIR/disallowed-positions-without-feature-gate.rs:327:9
+   |
+LL |     if (let Some(a) = opt && (true)) && true {
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:332:22
+   |
+LL |     let x = (true && let y = 1);
+   |                      ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:337:20
+   |
+LL |         ([1, 2, 3][let _ = ()])
+   |                    ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:63:16
+   |
+LL |     use_expr!((let 0 = 1 && 0 == 0));
+   |                ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions-without-feature-gate.rs:65:16
+   |
+LL |     use_expr!((let 0 = 1));
+   |                ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:101:8
+   |
+LL |     if true..(let 0 = 0) {}
+   |        ^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<bool>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:110:12
+   |
+LL |     if let Range { start: _, end: _ } = true..true && false {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
+   |            |
+   |            expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:113:12
+   |
+LL |     if let Range { start: _, end: _ } = true..true || false {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
+   |            |
+   |            expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:119:12
+   |
+LL |     if let Range { start: F, end } = F..|| true {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `fn() -> bool`
+   |            |
+   |            expected fn pointer, found `Range<_>`
+   |
+   = note: expected fn pointer `fn() -> bool`
+                  found struct `std::ops::Range<_>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:125:12
+   |
+LL |     if let Range { start: true, end } = t..&&false {}
+   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `&&bool`
+   |            |
+   |            expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0277]: the `?` operator can only be applied to values that implement `Try`
+  --> $DIR/disallowed-positions-without-feature-gate.rs:81:20
+   |
+LL |         if let 0 = 0? {}
+   |                    ^^ the `?` operator cannot be applied to type `{integer}`
+   |
+   = help: the trait `Try` is not implemented for `{integer}`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:165:11
+   |
+LL |     while true..(let 0 = 0) {}
+   |           ^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<bool>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:174:15
+   |
+LL |     while let Range { start: _, end: _ } = true..true && false {}
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
+   |               |
+   |               expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:177:15
+   |
+LL |     while let Range { start: _, end: _ } = true..true || false {}
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
+   |               |
+   |               expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:183:15
+   |
+LL |     while let Range { start: F, end } = F..|| true {}
+   |               ^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `fn() -> bool`
+   |               |
+   |               expected fn pointer, found `Range<_>`
+   |
+   = note: expected fn pointer `fn() -> bool`
+                  found struct `std::ops::Range<_>`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:189:15
+   |
+LL |     while let Range { start: true, end } = t..&&false {}
+   |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `&&bool`
+   |               |
+   |               expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0277]: the `?` operator can only be applied to values that implement `Try`
+  --> $DIR/disallowed-positions-without-feature-gate.rs:145:23
+   |
+LL |         while let 0 = 0? {}
+   |                       ^^ the `?` operator cannot be applied to type `{integer}`
+   |
+   = help: the trait `Try` is not implemented for `{integer}`
+
+error[E0308]: mismatched types
+  --> $DIR/disallowed-positions-without-feature-gate.rs:246:10
+   |
+LL |     (let Range { start: _, end: _ } = true..true || false);
+   |          ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
+   |          |
+   |          expected `bool`, found `Range<_>`
+   |
+   = note: expected type `bool`
+            found struct `std::ops::Range<_>`
+
+error[E0277]: the `?` operator can only be applied to values that implement `Try`
+  --> $DIR/disallowed-positions-without-feature-gate.rs:221:17
+   |
+LL |         let 0 = 0?;
+   |                 ^^ the `?` operator cannot be applied to type `{integer}`
+   |
+   = help: the trait `Try` is not implemented for `{integer}`
+
+error: aborting due to 105 previous errors
+
+Some errors have detailed explanations: E0277, E0308.
+For more information about an error, try `rustc --explain E0277`.
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.rs
index 2a9a5472b2e..4ac3ea53a08 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.rs
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.rs
@@ -27,64 +27,46 @@ fn main() {}
 
 fn _if() {
     if (let 0 = 1) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if (((let 0 = 1))) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if (let 0 = 1) && true {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if true && (let 0 = 1) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if (let 0 = 1) && (let 0 = 1) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
 
     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
 }
 
 fn _while() {
     while (let 0 = 1) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while (((let 0 = 1))) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while (let 0 = 1) && true {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while true && (let 0 = 1) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while (let 0 = 1) && (let 0 = 1) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
 
     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
 }
@@ -97,32 +79,21 @@ fn _macros() {
         }
     }
     use_expr!((let 0 = 1 && 0 == 0));
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     use_expr!((let 0 = 1));
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 }
 
 fn nested_within_if_expr() {
     if &let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if !let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     if *let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR type `bool` cannot be dereferenced
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     if -let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR cannot apply unary operator `-` to type `bool`
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     fn _check_try_binds_tighter() -> Result<(), ()> {
         if let 0 = 0? {}
@@ -130,91 +101,63 @@ fn nested_within_if_expr() {
         Ok(())
     }
     if (let 0 = 0)? {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR the `?` operator can only be applied to values that implement `Try`
-    //~| ERROR the `?` operator can only be used in a function that returns `Result`
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if true || let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     if (true || let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     if true && (true || let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     if true || (true && let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     let mut x = true;
     if x = let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     if true..(let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
     if ..(let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     if (let 0 = 0).. {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     // Binds as `(let ... = true)..true &&/|| false`.
     if let Range { start: _, end: _ } = true..true && false {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
     if let Range { start: _, end: _ } = true..true || false {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
 
     // Binds as `(let Range { start: F, end } = F)..(|| true)`.
     const F: fn() -> bool = || true;
     if let Range { start: F, end } = F..|| true {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
 
     // Binds as `(let Range { start: true, end } = t)..(&&false)`.
     let t = &&true;
     if let Range { start: true, end } = t..&&false {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
 
     if let true = let true = true {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 }
 
 fn nested_within_while_expr() {
     while &let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while !let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     while *let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR type `bool` cannot be dereferenced
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     while -let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR cannot apply unary operator `-` to type `bool`
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     fn _check_try_binds_tighter() -> Result<(), ()> {
         while let 0 = 0? {}
@@ -222,72 +165,51 @@ fn nested_within_while_expr() {
         Ok(())
     }
     while (let 0 = 0)? {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR the `?` operator can only be applied to values that implement `Try`
-    //~| ERROR the `?` operator can only be used in a function that returns `Result`
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while true || let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     while (true || let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     while true && (true || let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     while true || (true && let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     let mut x = true;
     while x = let 0 = 0 {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     while true..(let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
     while ..(let 0 = 0) {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     while (let 0 = 0).. {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     // Binds as `(let ... = true)..true &&/|| false`.
     while let Range { start: _, end: _ } = true..true && false {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
     while let Range { start: _, end: _ } = true..true || false {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
 
     // Binds as `(let Range { start: F, end } = F)..(|| true)`.
     const F: fn() -> bool = || true;
     while let Range { start: F, end } = F..|| true {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
 
     // Binds as `(let Range { start: true, end } = t)..(&&false)`.
     let t = &&true;
     while let Range { start: true, end } = t..&&false {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR mismatched types
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR mismatched types
 
     while let true = let true = true {}
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 }
 
 fn not_error_because_clarified_intent() {
@@ -302,20 +224,14 @@ fn not_error_because_clarified_intent() {
 
 fn outside_if_and_while_expr() {
     &let 0 = 0;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     !let 0 = 0;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     *let 0 = 0;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR type `bool` cannot be dereferenced
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     -let 0 = 0;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR cannot apply unary operator `-` to type `bool`
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     fn _check_try_binds_tighter() -> Result<(), ()> {
         let 0 = 0?;
@@ -323,44 +239,32 @@ fn outside_if_and_while_expr() {
         Ok(())
     }
     (let 0 = 0)?;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR the `?` operator can only be used in a function that returns `Result`
-    //~| ERROR the `?` operator can only be applied to values that implement `Try`
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     true || let 0 = 0;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     (true || let 0 = 0);
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     true && (true || let 0 = 0);
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     let mut x = true;
     x = let 0 = 0;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     true..(let 0 = 0);
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     ..(let 0 = 0);
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     (let 0 = 0)..;
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     (let Range { start: _, end: _ } = true..true || false);
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
+    //~^ ERROR mismatched types
     //~| ERROR expected expression, found `let` statement
 
     (let true = let true = true);
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
 
     {
@@ -377,9 +281,7 @@ fn outside_if_and_while_expr() {
 
     // Check function tail position.
     &let 0 = 0
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR mismatched types
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 }
 
 // Let's make sure that `let` inside const generic arguments are considered.
@@ -389,20 +291,17 @@ fn inside_const_generic_arguments() {
 
     if let A::<{
         true && let 1 = 1
-        //~^ ERROR `let` expressions are not supported here
-        //~| ERROR expected expression, found `let` statement
+        //~^ ERROR expected expression, found `let` statement
     }>::O = 5 {}
 
     while let A::<{
         true && let 1 = 1
-        //~^ ERROR `let` expressions are not supported here
-        //~| ERROR expected expression, found `let` statement
+        //~^ ERROR expected expression, found `let` statement
     }>::O = 5 {}
 
     if A::<{
         true && let 1 = 1
-        //~^ ERROR `let` expressions are not supported here
-        //~| ERROR expected expression, found `let` statement
+        //~^ ERROR expected expression, found `let` statement
     }>::O == 5 {}
 
     // In the cases above we have `ExprKind::Block` to help us out.
@@ -413,8 +312,7 @@ fn inside_const_generic_arguments() {
 
     if A::<
         true && let 1 = 1
-        //~^ ERROR `let` expressions are not supported here
-        //~| ERROR expressions must be enclosed in braces
+        //~^ ERROR expressions must be enclosed in braces
         //~| ERROR expected expression, found `let` statement
     >::O == 5 {}
 }
@@ -423,38 +321,29 @@ fn with_parenthesis() {
     let opt = Some(Some(1i32));
 
     if (let Some(a) = opt && true) {
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     }
 
     if (let Some(a) = opt) && true {
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     }
     if (let Some(a) = opt) && (let Some(b) = a) {
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
     }
     if let Some(a) = opt && (true && true) {
     }
 
     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
     }
     if (let Some(a) = opt && (let Some(b) = a)) && true {
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     //~| ERROR expected expression, found `let` statement
     }
     if (let Some(a) = opt && (true)) && true {
-    //~^ ERROR `let` expressions are not supported here
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     }
 
     if (true && (true)) && let Some(a) = opt {
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.stderr
index 81933173c25..ab58abf4d46 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.stderr
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/disallowed-positions.stderr
@@ -2,503 +2,6 @@ error: expected expression, found `let` statement
   --> $DIR/disallowed-positions.rs:29:9
    |
 LL |     if (let 0 = 1) {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:33:11
-   |
-LL |     if (((let 0 = 1))) {}
-   |           ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:37:9
-   |
-LL |     if (let 0 = 1) && true {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:41:17
-   |
-LL |     if true && (let 0 = 1) {}
-   |                 ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:45:9
-   |
-LL |     if (let 0 = 1) && (let 0 = 1) {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:45:24
-   |
-LL |     if (let 0 = 1) && (let 0 = 1) {}
-   |                        ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:51:35
-   |
-LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-   |                                   ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:51:48
-   |
-LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-   |                                                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:51:61
-   |
-LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-   |                                                             ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:61:12
-   |
-LL |     while (let 0 = 1) {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:65:14
-   |
-LL |     while (((let 0 = 1))) {}
-   |              ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:69:12
-   |
-LL |     while (let 0 = 1) && true {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:73:20
-   |
-LL |     while true && (let 0 = 1) {}
-   |                    ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:77:12
-   |
-LL |     while (let 0 = 1) && (let 0 = 1) {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:77:27
-   |
-LL |     while (let 0 = 1) && (let 0 = 1) {}
-   |                           ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:83:38
-   |
-LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-   |                                      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:83:51
-   |
-LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-   |                                                   ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:83:64
-   |
-LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
-   |                                                                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:110:9
-   |
-LL |     if &let 0 = 0 {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:115:9
-   |
-LL |     if !let 0 = 0 {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:118:9
-   |
-LL |     if *let 0 = 0 {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:122:9
-   |
-LL |     if -let 0 = 0 {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:132:9
-   |
-LL |     if (let 0 = 0)? {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:138:16
-   |
-LL |     if true || let 0 = 0 {}
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:141:17
-   |
-LL |     if (true || let 0 = 0) {}
-   |                 ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:144:25
-   |
-LL |     if true && (true || let 0 = 0) {}
-   |                         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:147:25
-   |
-LL |     if true || (true && let 0 = 0) {}
-   |                         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:152:12
-   |
-LL |     if x = let 0 = 0 {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:157:15
-   |
-LL |     if true..(let 0 = 0) {}
-   |               ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:161:11
-   |
-LL |     if ..(let 0 = 0) {}
-   |           ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:165:9
-   |
-LL |     if (let 0 = 0).. {}
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:196:19
-   |
-LL |     if let true = let true = true {}
-   |                   ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:202:12
-   |
-LL |     while &let 0 = 0 {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:207:12
-   |
-LL |     while !let 0 = 0 {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:210:12
-   |
-LL |     while *let 0 = 0 {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:214:12
-   |
-LL |     while -let 0 = 0 {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:224:12
-   |
-LL |     while (let 0 = 0)? {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:230:19
-   |
-LL |     while true || let 0 = 0 {}
-   |                   ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:233:20
-   |
-LL |     while (true || let 0 = 0) {}
-   |                    ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:236:28
-   |
-LL |     while true && (true || let 0 = 0) {}
-   |                            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:239:28
-   |
-LL |     while true || (true && let 0 = 0) {}
-   |                            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:244:15
-   |
-LL |     while x = let 0 = 0 {}
-   |               ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:249:18
-   |
-LL |     while true..(let 0 = 0) {}
-   |                  ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:253:14
-   |
-LL |     while ..(let 0 = 0) {}
-   |              ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:257:12
-   |
-LL |     while (let 0 = 0).. {}
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:288:22
-   |
-LL |     while let true = let true = true {}
-   |                      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:304:6
-   |
-LL |     &let 0 = 0;
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:308:6
-   |
-LL |     !let 0 = 0;
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:311:6
-   |
-LL |     *let 0 = 0;
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:315:6
-   |
-LL |     -let 0 = 0;
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:325:6
-   |
-LL |     (let 0 = 0)?;
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:331:13
-   |
-LL |     true || let 0 = 0;
-   |             ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:334:14
-   |
-LL |     (true || let 0 = 0);
-   |              ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:337:22
-   |
-LL |     true && (true || let 0 = 0);
-   |                      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:342:9
-   |
-LL |     x = let 0 = 0;
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:346:12
-   |
-LL |     true..(let 0 = 0);
-   |            ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:349:8
-   |
-LL |     ..(let 0 = 0);
-   |        ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:352:6
-   |
-LL |     (let 0 = 0)..;
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:356:6
-   |
-LL |     (let Range { start: _, end: _ } = true..true || false);
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:361:6
-   |
-LL |     (let true = let true = true);
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:361:17
-   |
-LL |     (let true = let true = true);
-   |                 ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:368:25
-   |
-LL |         let x = true && let y = 1;
-   |                         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:374:19
-   |
-LL |         [1, 2, 3][let _ = ()]
-   |                   ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:379:6
-   |
-LL |     &let 0 = 0
-   |      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:391:17
-   |
-LL |         true && let 1 = 1
-   |                 ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:397:17
-   |
-LL |         true && let 1 = 1
-   |                 ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:403:17
-   |
-LL |         true && let 1 = 1
-   |                 ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:415:17
-   |
-LL |         true && let 1 = 1
-   |                 ^^^
-
-error: expressions must be enclosed in braces to be used as const generic arguments
-  --> $DIR/disallowed-positions.rs:415:9
-   |
-LL |         true && let 1 = 1
-   |         ^^^^^^^^^^^^^^^^^
-   |
-help: enclose the `const` expression in braces
-   |
-LL |         { true && let 1 = 1 }
-   |         +                   +
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:425:9
-   |
-LL |     if (let Some(a) = opt && true) {
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:430:9
-   |
-LL |     if (let Some(a) = opt) && true {
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:434:9
-   |
-LL |     if (let Some(a) = opt) && (let Some(b) = a) {
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:434:32
-   |
-LL |     if (let Some(a) = opt) && (let Some(b) = a) {
-   |                                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:443:9
-   |
-LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:443:31
-   |
-LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
-   |                               ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:449:9
-   |
-LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:449:31
-   |
-LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
-   |                               ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:455:9
-   |
-LL |     if (let Some(a) = opt && (true)) && true {
-   |         ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:472:22
-   |
-LL |     let x = (true && let y = 1);
-   |                      ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:477:20
-   |
-LL |         ([1, 2, 3][let _ = ()])
-   |                    ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:99:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^
-
-error: expected expression, found `let` statement
-  --> $DIR/disallowed-positions.rs:103:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:29:9
-   |
-LL |     if (let 0 = 1) {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
@@ -508,1012 +11,863 @@ note: `let`s wrapped in parentheses are not supported in a context with let chai
 LL |     if (let 0 = 1) {}
    |         ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:33:11
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:32:11
    |
 LL |     if (((let 0 = 1))) {}
    |           ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:33:11
+  --> $DIR/disallowed-positions.rs:32:11
    |
 LL |     if (((let 0 = 1))) {}
    |           ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:37:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:35:9
    |
 LL |     if (let 0 = 1) && true {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:37:9
+  --> $DIR/disallowed-positions.rs:35:9
    |
 LL |     if (let 0 = 1) && true {}
    |         ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:41:17
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:38:17
    |
 LL |     if true && (let 0 = 1) {}
    |                 ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:41:17
+  --> $DIR/disallowed-positions.rs:38:17
    |
 LL |     if true && (let 0 = 1) {}
    |                 ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:45:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:41:9
    |
 LL |     if (let 0 = 1) && (let 0 = 1) {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:45:9
+  --> $DIR/disallowed-positions.rs:41:9
    |
 LL |     if (let 0 = 1) && (let 0 = 1) {}
    |         ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:45:24
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:41:24
    |
 LL |     if (let 0 = 1) && (let 0 = 1) {}
    |                        ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:45:24
+  --> $DIR/disallowed-positions.rs:41:24
    |
 LL |     if (let 0 = 1) && (let 0 = 1) {}
    |                        ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:51:35
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:45:35
    |
 LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                   ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:51:35
+  --> $DIR/disallowed-positions.rs:45:35
    |
 LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:51:48
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:45:48
    |
 LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                                ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:51:35
+  --> $DIR/disallowed-positions.rs:45:35
    |
 LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:51:61
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:45:61
    |
 LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                                             ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:51:35
+  --> $DIR/disallowed-positions.rs:45:35
    |
 LL |     if let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:61:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:52:12
    |
 LL |     while (let 0 = 1) {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:61:12
+  --> $DIR/disallowed-positions.rs:52:12
    |
 LL |     while (let 0 = 1) {}
    |            ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:65:14
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:55:14
    |
 LL |     while (((let 0 = 1))) {}
    |              ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:65:14
+  --> $DIR/disallowed-positions.rs:55:14
    |
 LL |     while (((let 0 = 1))) {}
    |              ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:69:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:58:12
    |
 LL |     while (let 0 = 1) && true {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:69:12
+  --> $DIR/disallowed-positions.rs:58:12
    |
 LL |     while (let 0 = 1) && true {}
    |            ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:73:20
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:61:20
    |
 LL |     while true && (let 0 = 1) {}
    |                    ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:73:20
+  --> $DIR/disallowed-positions.rs:61:20
    |
 LL |     while true && (let 0 = 1) {}
    |                    ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:77:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:64:12
    |
 LL |     while (let 0 = 1) && (let 0 = 1) {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:77:12
+  --> $DIR/disallowed-positions.rs:64:12
    |
 LL |     while (let 0 = 1) && (let 0 = 1) {}
    |            ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:77:27
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:64:27
    |
 LL |     while (let 0 = 1) && (let 0 = 1) {}
    |                           ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:77:27
+  --> $DIR/disallowed-positions.rs:64:27
    |
 LL |     while (let 0 = 1) && (let 0 = 1) {}
    |                           ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:83:38
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:68:38
    |
 LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                      ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:83:38
+  --> $DIR/disallowed-positions.rs:68:38
    |
 LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:83:51
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:68:51
    |
 LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                                   ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:83:38
+  --> $DIR/disallowed-positions.rs:68:38
    |
 LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:83:64
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:68:64
    |
 LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                                                ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:83:38
+  --> $DIR/disallowed-positions.rs:68:38
    |
 LL |     while let 0 = 1 && let 1 = 2 && (let 2 = 3 && let 3 = 4 && let 4 = 5) {}
    |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:99:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^
-   |
-   = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:99:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^^^^^^^^^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:99:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^
-   |
-   = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:99:16
-   |
-LL |     use_expr!((let 0 = 1 && 0 == 0));
-   |                ^^^^^^^^^^^^^^^^^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:103:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
-   |
-   = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:103:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:103:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
-   |
-   = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:103:16
-   |
-LL |     use_expr!((let 0 = 1));
-   |                ^^^^^^^^^
-
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:110:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:88:9
    |
 LL |     if &let 0 = 0 {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:115:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:91:9
    |
 LL |     if !let 0 = 0 {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:118:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:93:9
    |
 LL |     if *let 0 = 0 {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:122:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:95:9
    |
 LL |     if -let 0 = 0 {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:132:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:103:9
    |
 LL |     if (let 0 = 0)? {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:132:9
-   |
-LL |     if (let 0 = 0)? {}
-   |         ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:138:16
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:106:16
    |
 LL |     if true || let 0 = 0 {}
    |                ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:138:13
+  --> $DIR/disallowed-positions.rs:106:13
    |
 LL |     if true || let 0 = 0 {}
    |             ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:141:17
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:108:17
    |
 LL |     if (true || let 0 = 0) {}
    |                 ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:141:14
-   |
-LL |     if (true || let 0 = 0) {}
-   |              ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:144:25
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:110:25
    |
 LL |     if true && (true || let 0 = 0) {}
    |                         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:144:22
-   |
-LL |     if true && (true || let 0 = 0) {}
-   |                      ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:147:25
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:112:25
    |
 LL |     if true || (true && let 0 = 0) {}
    |                         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:147:17
-   |
-LL |     if true || (true && let 0 = 0) {}
-   |                 ^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:152:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:116:12
    |
 LL |     if x = let 0 = 0 {}
-   |            ^^^^^^^^^
+   |            ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:157:15
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:119:15
    |
 LL |     if true..(let 0 = 0) {}
    |               ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:157:15
-   |
-LL |     if true..(let 0 = 0) {}
-   |               ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:161:11
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:122:11
    |
 LL |     if ..(let 0 = 0) {}
    |           ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:161:11
-   |
-LL |     if ..(let 0 = 0) {}
-   |           ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:165:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:124:9
    |
 LL |     if (let 0 = 0).. {}
    |         ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:165:9
-   |
-LL |     if (let 0 = 0).. {}
-   |         ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:171:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:128:8
    |
 LL |     if let Range { start: _, end: _ } = true..true && false {}
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:175:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:131:8
    |
 LL |     if let Range { start: _, end: _ } = true..true || false {}
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:182:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:137:8
    |
 LL |     if let Range { start: F, end } = F..|| true {}
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:190:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:143:8
    |
 LL |     if let Range { start: true, end } = t..&&false {}
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:196:19
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:147:19
    |
 LL |     if let true = let true = true {}
-   |                   ^^^^^^^^^^^^^^^
+   |                   ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:202:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:152:12
    |
 LL |     while &let 0 = 0 {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:207:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:155:12
    |
 LL |     while !let 0 = 0 {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:210:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:157:12
    |
 LL |     while *let 0 = 0 {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:214:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:159:12
    |
 LL |     while -let 0 = 0 {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:224:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:167:12
    |
 LL |     while (let 0 = 0)? {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:224:12
-   |
-LL |     while (let 0 = 0)? {}
-   |            ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:230:19
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:170:19
    |
 LL |     while true || let 0 = 0 {}
    |                   ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:230:16
+  --> $DIR/disallowed-positions.rs:170:16
    |
 LL |     while true || let 0 = 0 {}
    |                ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:233:20
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:172:20
    |
 LL |     while (true || let 0 = 0) {}
    |                    ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:233:17
-   |
-LL |     while (true || let 0 = 0) {}
-   |                 ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:236:28
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:174:28
    |
 LL |     while true && (true || let 0 = 0) {}
    |                            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:236:25
-   |
-LL |     while true && (true || let 0 = 0) {}
-   |                         ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:239:28
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:176:28
    |
 LL |     while true || (true && let 0 = 0) {}
    |                            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:239:20
-   |
-LL |     while true || (true && let 0 = 0) {}
-   |                    ^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:244:15
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:180:15
    |
 LL |     while x = let 0 = 0 {}
-   |               ^^^^^^^^^
+   |               ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:249:18
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:183:18
    |
 LL |     while true..(let 0 = 0) {}
    |                  ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:249:18
-   |
-LL |     while true..(let 0 = 0) {}
-   |                  ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:253:14
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:186:14
    |
 LL |     while ..(let 0 = 0) {}
    |              ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:253:14
-   |
-LL |     while ..(let 0 = 0) {}
-   |              ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:257:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:188:12
    |
 LL |     while (let 0 = 0).. {}
    |            ^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:257:12
-   |
-LL |     while (let 0 = 0).. {}
-   |            ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:263:11
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:192:11
    |
 LL |     while let Range { start: _, end: _ } = true..true && false {}
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:267:11
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:195:11
    |
 LL |     while let Range { start: _, end: _ } = true..true || false {}
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:274:11
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:201:11
    |
 LL |     while let Range { start: F, end } = F..|| true {}
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:282:11
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:207:11
    |
 LL |     while let Range { start: true, end } = t..&&false {}
    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:288:22
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:211:22
    |
 LL |     while let true = let true = true {}
-   |                      ^^^^^^^^^^^^^^^
+   |                      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:304:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:226:6
    |
 LL |     &let 0 = 0;
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:308:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:229:6
    |
 LL |     !let 0 = 0;
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:311:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:231:6
    |
 LL |     *let 0 = 0;
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:315:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:233:6
    |
 LL |     -let 0 = 0;
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:325:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:241:6
    |
 LL |     (let 0 = 0)?;
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:325:6
-   |
-LL |     (let 0 = 0)?;
-   |      ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:331:13
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:244:13
    |
 LL |     true || let 0 = 0;
-   |             ^^^^^^^^^
+   |             ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:331:10
-   |
-LL |     true || let 0 = 0;
-   |          ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:334:14
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:246:14
    |
 LL |     (true || let 0 = 0);
-   |              ^^^^^^^^^
+   |              ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:334:11
-   |
-LL |     (true || let 0 = 0);
-   |           ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:337:22
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:248:22
    |
 LL |     true && (true || let 0 = 0);
-   |                      ^^^^^^^^^
+   |                      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `||` operators are not supported in let chain expressions
-  --> $DIR/disallowed-positions.rs:337:19
-   |
-LL |     true && (true || let 0 = 0);
-   |                   ^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:342:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:252:9
    |
 LL |     x = let 0 = 0;
-   |         ^^^^^^^^^
+   |         ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:346:12
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:255:12
    |
 LL |     true..(let 0 = 0);
-   |            ^^^^^^^^^
+   |            ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:346:12
-   |
-LL |     true..(let 0 = 0);
-   |            ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:349:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:257:8
    |
 LL |     ..(let 0 = 0);
-   |        ^^^^^^^^^
+   |        ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:349:8
-   |
-LL |     ..(let 0 = 0);
-   |        ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:352:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:259:6
    |
 LL |     (let 0 = 0)..;
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:352:6
-   |
-LL |     (let 0 = 0)..;
-   |      ^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:356:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:262:6
    |
 LL |     (let Range { start: _, end: _ } = true..true || false);
-   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:361:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:266:6
    |
 LL |     (let true = let true = true);
-   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
-note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:361:6
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:266:17
    |
 LL |     (let true = let true = true);
-   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:272:25
+   |
+LL |         let x = true && let y = 1;
+   |                         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:278:19
+   |
+LL |         [1, 2, 3][let _ = ()]
+   |                   ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:379:6
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:283:6
    |
 LL |     &let 0 = 0
-   |      ^^^^^^^^^
+   |      ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:391:17
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:293:17
    |
 LL |         true && let 1 = 1
-   |                 ^^^^^^^^^
+   |                 ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:397:17
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:298:17
    |
 LL |         true && let 1 = 1
-   |                 ^^^^^^^^^
+   |                 ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:403:17
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:303:17
    |
 LL |         true && let 1 = 1
-   |                 ^^^^^^^^^
+   |                 ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:415:17
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:314:17
    |
 LL |         true && let 1 = 1
-   |                 ^^^^^^^^^
+   |                 ^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:425:9
+error: expressions must be enclosed in braces to be used as const generic arguments
+  --> $DIR/disallowed-positions.rs:314:9
+   |
+LL |         true && let 1 = 1
+   |         ^^^^^^^^^^^^^^^^^
+   |
+help: enclose the `const` expression in braces
+   |
+LL |         { true && let 1 = 1 }
+   |         +                   +
+
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:323:9
    |
 LL |     if (let Some(a) = opt && true) {
    |         ^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:425:9
+  --> $DIR/disallowed-positions.rs:323:9
    |
 LL |     if (let Some(a) = opt && true) {
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:430:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:327:9
    |
 LL |     if (let Some(a) = opt) && true {
    |         ^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:430:9
+  --> $DIR/disallowed-positions.rs:327:9
    |
 LL |     if (let Some(a) = opt) && true {
    |         ^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:434:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:330:9
    |
 LL |     if (let Some(a) = opt) && (let Some(b) = a) {
    |         ^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:434:9
+  --> $DIR/disallowed-positions.rs:330:9
    |
 LL |     if (let Some(a) = opt) && (let Some(b) = a) {
    |         ^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:434:32
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:330:32
    |
 LL |     if (let Some(a) = opt) && (let Some(b) = a) {
    |                                ^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:434:32
+  --> $DIR/disallowed-positions.rs:330:32
    |
 LL |     if (let Some(a) = opt) && (let Some(b) = a) {
    |                                ^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:443:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:337:9
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
    |         ^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:443:9
+  --> $DIR/disallowed-positions.rs:337:9
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:443:31
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:337:31
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
    |                               ^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:443:31
+  --> $DIR/disallowed-positions.rs:337:31
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && b == 1 {
    |                               ^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:449:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:341:9
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
    |         ^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:449:9
+  --> $DIR/disallowed-positions.rs:341:9
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:449:31
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:341:31
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
    |                               ^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:449:31
+  --> $DIR/disallowed-positions.rs:341:31
    |
 LL |     if (let Some(a) = opt && (let Some(b) = a)) && true {
    |                               ^^^^^^^^^^^^^^^
 
-error: `let` expressions are not supported here
-  --> $DIR/disallowed-positions.rs:455:9
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:345:9
    |
 LL |     if (let Some(a) = opt && (true)) && true {
    |         ^^^^^^^^^^^^^^^^^
    |
    = note: only supported directly in conditions of `if` and `while` expressions
 note: `let`s wrapped in parentheses are not supported in a context with let chains
-  --> $DIR/disallowed-positions.rs:455:9
+  --> $DIR/disallowed-positions.rs:345:9
    |
 LL |     if (let Some(a) = opt && (true)) && true {
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:110:8
-   |
-LL |     if &let 0 = 0 {}
-   |        ^^^^^^^^^^ expected `bool`, found `&bool`
-   |
-help: consider removing the borrow
-   |
-LL -     if &let 0 = 0 {}
-LL +     if let 0 = 0 {}
-   |
-
-error[E0614]: type `bool` cannot be dereferenced
-  --> $DIR/disallowed-positions.rs:118:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:361:22
    |
-LL |     if *let 0 = 0 {}
-   |        ^^^^^^^^^^
-
-error[E0600]: cannot apply unary operator `-` to type `bool`
-  --> $DIR/disallowed-positions.rs:122:8
+LL |     let x = (true && let y = 1);
+   |                      ^^^
    |
-LL |     if -let 0 = 0 {}
-   |        ^^^^^^^^^^ cannot apply unary operator `-`
+   = note: only supported directly in conditions of `if` and `while` expressions
 
-error[E0277]: the `?` operator can only be applied to values that implement `Try`
-  --> $DIR/disallowed-positions.rs:132:8
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:366:20
    |
-LL |     if (let 0 = 0)? {}
-   |        ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool`
+LL |         ([1, 2, 3][let _ = ()])
+   |                    ^^^
    |
-   = help: the trait `Try` is not implemented for `bool`
+   = note: only supported directly in conditions of `if` and `while` expressions
 
-error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
-  --> $DIR/disallowed-positions.rs:132:19
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:81:16
    |
-LL | fn nested_within_if_expr() {
-   | -------------------------- this function should return `Result` or `Option` to accept `?`
-...
-LL |     if (let 0 = 0)? {}
-   |                   ^ cannot use the `?` operator in a function that returns `()`
+LL |     use_expr!((let 0 = 1 && 0 == 0));
+   |                ^^^
    |
-   = help: the trait `FromResidual<_>` is not implemented for `()`
+   = note: only supported directly in conditions of `if` and `while` expressions
 
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:152:8
-   |
-LL |     if x = let 0 = 0 {}
-   |        ^^^^^^^^^^^^^ expected `bool`, found `()`
+error: expected expression, found `let` statement
+  --> $DIR/disallowed-positions.rs:83:16
    |
-help: you might have meant to compare for equality
+LL |     use_expr!((let 0 = 1));
+   |                ^^^
    |
-LL |     if x == let 0 = 0 {}
-   |           +
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:157:8
+  --> $DIR/disallowed-positions.rs:119:8
    |
 LL |     if true..(let 0 = 0) {}
    |        ^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
@@ -1522,25 +876,7 @@ LL |     if true..(let 0 = 0) {}
             found struct `std::ops::Range<bool>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:161:8
-   |
-LL |     if ..(let 0 = 0) {}
-   |        ^^^^^^^^^^^^^ expected `bool`, found `RangeTo<bool>`
-   |
-   = note: expected type `bool`
-            found struct `RangeTo<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:165:8
-   |
-LL |     if (let 0 = 0).. {}
-   |        ^^^^^^^^^^^^^ expected `bool`, found `RangeFrom<bool>`
-   |
-   = note: expected type `bool`
-            found struct `RangeFrom<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:171:12
+  --> $DIR/disallowed-positions.rs:128:12
    |
 LL |     if let Range { start: _, end: _ } = true..true && false {}
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
@@ -1551,16 +887,7 @@ LL |     if let Range { start: _, end: _ } = true..true && false {}
             found struct `std::ops::Range<_>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:171:8
-   |
-LL |     if let Range { start: _, end: _ } = true..true && false {}
-   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:175:12
+  --> $DIR/disallowed-positions.rs:131:12
    |
 LL |     if let Range { start: _, end: _ } = true..true || false {}
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
@@ -1571,16 +898,7 @@ LL |     if let Range { start: _, end: _ } = true..true || false {}
             found struct `std::ops::Range<_>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:175:8
-   |
-LL |     if let Range { start: _, end: _ } = true..true || false {}
-   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:182:12
+  --> $DIR/disallowed-positions.rs:137:12
    |
 LL |     if let Range { start: F, end } = F..|| true {}
    |            ^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `fn() -> bool`
@@ -1591,29 +909,7 @@ LL |     if let Range { start: F, end } = F..|| true {}
                   found struct `std::ops::Range<_>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:182:41
-   |
-LL |     if let Range { start: F, end } = F..|| true {}
-   |                                         ^^^^^^^ expected `bool`, found closure
-   |
-   = note: expected type `bool`
-           found closure `[closure@$DIR/disallowed-positions.rs:182:41: 182:43]`
-help: use parentheses to call this closure
-   |
-LL |     if let Range { start: F, end } = F..(|| true)() {}
-   |                                         +       +++
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:182:8
-   |
-LL |     if let Range { start: F, end } = F..|| true {}
-   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:190:12
+  --> $DIR/disallowed-positions.rs:143:12
    |
 LL |     if let Range { start: true, end } = t..&&false {}
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `&&bool`
@@ -1623,29 +919,8 @@ LL |     if let Range { start: true, end } = t..&&false {}
    = note: expected type `bool`
             found struct `std::ops::Range<_>`
 
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:190:44
-   |
-LL |     if let Range { start: true, end } = t..&&false {}
-   |                                            ^^^^^^^ expected `bool`, found `&&bool`
-   |
-help: consider removing the `&&`
-   |
-LL -     if let Range { start: true, end } = t..&&false {}
-LL +     if let Range { start: true, end } = t..false {}
-   |
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:190:8
-   |
-LL |     if let Range { start: true, end } = t..&&false {}
-   |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
 error[E0277]: the `?` operator can only be applied to values that implement `Try`
-  --> $DIR/disallowed-positions.rs:128:20
+  --> $DIR/disallowed-positions.rs:99:20
    |
 LL |         if let 0 = 0? {}
    |                    ^^ the `?` operator cannot be applied to type `{integer}`
@@ -1653,61 +928,7 @@ LL |         if let 0 = 0? {}
    = help: the trait `Try` is not implemented for `{integer}`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:202:11
-   |
-LL |     while &let 0 = 0 {}
-   |           ^^^^^^^^^^ expected `bool`, found `&bool`
-   |
-help: consider removing the borrow
-   |
-LL -     while &let 0 = 0 {}
-LL +     while let 0 = 0 {}
-   |
-
-error[E0614]: type `bool` cannot be dereferenced
-  --> $DIR/disallowed-positions.rs:210:11
-   |
-LL |     while *let 0 = 0 {}
-   |           ^^^^^^^^^^
-
-error[E0600]: cannot apply unary operator `-` to type `bool`
-  --> $DIR/disallowed-positions.rs:214:11
-   |
-LL |     while -let 0 = 0 {}
-   |           ^^^^^^^^^^ cannot apply unary operator `-`
-
-error[E0277]: the `?` operator can only be applied to values that implement `Try`
-  --> $DIR/disallowed-positions.rs:224:11
-   |
-LL |     while (let 0 = 0)? {}
-   |           ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool`
-   |
-   = help: the trait `Try` is not implemented for `bool`
-
-error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
-  --> $DIR/disallowed-positions.rs:224:22
-   |
-LL | fn nested_within_while_expr() {
-   | ----------------------------- this function should return `Result` or `Option` to accept `?`
-...
-LL |     while (let 0 = 0)? {}
-   |                      ^ cannot use the `?` operator in a function that returns `()`
-   |
-   = help: the trait `FromResidual<_>` is not implemented for `()`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:244:11
-   |
-LL |     while x = let 0 = 0 {}
-   |           ^^^^^^^^^^^^^ expected `bool`, found `()`
-   |
-help: you might have meant to compare for equality
-   |
-LL |     while x == let 0 = 0 {}
-   |              +
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:249:11
+  --> $DIR/disallowed-positions.rs:183:11
    |
 LL |     while true..(let 0 = 0) {}
    |           ^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
@@ -1716,25 +937,7 @@ LL |     while true..(let 0 = 0) {}
             found struct `std::ops::Range<bool>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:253:11
-   |
-LL |     while ..(let 0 = 0) {}
-   |           ^^^^^^^^^^^^^ expected `bool`, found `RangeTo<bool>`
-   |
-   = note: expected type `bool`
-            found struct `RangeTo<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:257:11
-   |
-LL |     while (let 0 = 0).. {}
-   |           ^^^^^^^^^^^^^ expected `bool`, found `RangeFrom<bool>`
-   |
-   = note: expected type `bool`
-            found struct `RangeFrom<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:263:15
+  --> $DIR/disallowed-positions.rs:192:15
    |
 LL |     while let Range { start: _, end: _ } = true..true && false {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
@@ -1745,16 +948,7 @@ LL |     while let Range { start: _, end: _ } = true..true && false {}
             found struct `std::ops::Range<_>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:263:11
-   |
-LL |     while let Range { start: _, end: _ } = true..true && false {}
-   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:267:15
+  --> $DIR/disallowed-positions.rs:195:15
    |
 LL |     while let Range { start: _, end: _ } = true..true || false {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
@@ -1765,16 +959,7 @@ LL |     while let Range { start: _, end: _ } = true..true || false {}
             found struct `std::ops::Range<_>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:267:11
-   |
-LL |     while let Range { start: _, end: _ } = true..true || false {}
-   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:274:15
+  --> $DIR/disallowed-positions.rs:201:15
    |
 LL |     while let Range { start: F, end } = F..|| true {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `fn() -> bool`
@@ -1785,29 +970,7 @@ LL |     while let Range { start: F, end } = F..|| true {}
                   found struct `std::ops::Range<_>`
 
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:274:44
-   |
-LL |     while let Range { start: F, end } = F..|| true {}
-   |                                            ^^^^^^^ expected `bool`, found closure
-   |
-   = note: expected type `bool`
-           found closure `[closure@$DIR/disallowed-positions.rs:274:44: 274:46]`
-help: use parentheses to call this closure
-   |
-LL |     while let Range { start: F, end } = F..(|| true)() {}
-   |                                            +       +++
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:274:11
-   |
-LL |     while let Range { start: F, end } = F..|| true {}
-   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:282:15
+  --> $DIR/disallowed-positions.rs:207:15
    |
 LL |     while let Range { start: true, end } = t..&&false {}
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^   - this expression has type `&&bool`
@@ -1817,68 +980,16 @@ LL |     while let Range { start: true, end } = t..&&false {}
    = note: expected type `bool`
             found struct `std::ops::Range<_>`
 
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:282:47
-   |
-LL |     while let Range { start: true, end } = t..&&false {}
-   |                                               ^^^^^^^ expected `bool`, found `&&bool`
-   |
-help: consider removing the `&&`
-   |
-LL -     while let Range { start: true, end } = t..&&false {}
-LL +     while let Range { start: true, end } = t..false {}
-   |
-
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:282:11
-   |
-LL |     while let Range { start: true, end } = t..&&false {}
-   |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `Range<bool>`
-   |
-   = note: expected type `bool`
-            found struct `std::ops::Range<bool>`
-
 error[E0277]: the `?` operator can only be applied to values that implement `Try`
-  --> $DIR/disallowed-positions.rs:220:23
+  --> $DIR/disallowed-positions.rs:163:23
    |
 LL |         while let 0 = 0? {}
    |                       ^^ the `?` operator cannot be applied to type `{integer}`
    |
    = help: the trait `Try` is not implemented for `{integer}`
 
-error[E0614]: type `bool` cannot be dereferenced
-  --> $DIR/disallowed-positions.rs:311:5
-   |
-LL |     *let 0 = 0;
-   |     ^^^^^^^^^^
-
-error[E0600]: cannot apply unary operator `-` to type `bool`
-  --> $DIR/disallowed-positions.rs:315:5
-   |
-LL |     -let 0 = 0;
-   |     ^^^^^^^^^^ cannot apply unary operator `-`
-
-error[E0277]: the `?` operator can only be applied to values that implement `Try`
-  --> $DIR/disallowed-positions.rs:325:5
-   |
-LL |     (let 0 = 0)?;
-   |     ^^^^^^^^^^^^ the `?` operator cannot be applied to type `bool`
-   |
-   = help: the trait `Try` is not implemented for `bool`
-
-error[E0277]: the `?` operator can only be used in a function that returns `Result` or `Option` (or another type that implements `FromResidual`)
-  --> $DIR/disallowed-positions.rs:325:16
-   |
-LL | fn outside_if_and_while_expr() {
-   | ------------------------------ this function should return `Result` or `Option` to accept `?`
-...
-LL |     (let 0 = 0)?;
-   |                ^ cannot use the `?` operator in a function that returns `()`
-   |
-   = help: the trait `FromResidual<_>` is not implemented for `()`
-
 error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:356:10
+  --> $DIR/disallowed-positions.rs:262:10
    |
 LL |     (let Range { start: _, end: _ } = true..true || false);
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^   ---- this expression has type `bool`
@@ -1888,24 +999,15 @@ LL |     (let Range { start: _, end: _ } = true..true || false);
    = note: expected type `bool`
             found struct `std::ops::Range<_>`
 
-error[E0308]: mismatched types
-  --> $DIR/disallowed-positions.rs:379:5
-   |
-LL | fn outside_if_and_while_expr() {
-   |                                - help: try adding a return type: `-> &bool`
-...
-LL |     &let 0 = 0
-   |     ^^^^^^^^^^ expected `()`, found `&bool`
-
 error[E0277]: the `?` operator can only be applied to values that implement `Try`
-  --> $DIR/disallowed-positions.rs:321:17
+  --> $DIR/disallowed-positions.rs:237:17
    |
 LL |         let 0 = 0?;
    |                 ^^ the `?` operator cannot be applied to type `{integer}`
    |
    = help: the trait `Try` is not implemented for `{integer}`
 
-error: aborting due to 215 previous errors
+error: aborting due to 104 previous errors
 
-Some errors have detailed explanations: E0277, E0308, E0600, E0614.
+Some errors have detailed explanations: E0277, E0308.
 For more information about an error, try `rustc --explain E0277`.
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.rs
index 2a6c144350a..3c572054e3f 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.rs
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.rs
@@ -14,7 +14,6 @@ fn main() {
     };
     let Some(n) = opt && let another = n else {
     //~^ ERROR a `&&` expression cannot be directly assigned in `let...else`
-    //~| ERROR `let` expressions are not supported here
     //~| ERROR mismatched types
     //~| ERROR mismatched types
     //~| ERROR expected expression, found `let` statement
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr
index 9bc3e754126..0442f1218b1 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/ensure-that-let-else-does-not-interact-with-let-chains.stderr
@@ -14,6 +14,8 @@ error: expected expression, found `let` statement
    |
 LL |     let Some(n) = opt && let another = n else {
    |                          ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: a `&&` expression cannot be directly assigned in `let...else`
   --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:15:19
@@ -27,13 +29,13 @@ LL |     let Some(n) = (opt && let another = n) else {
    |                   +                      +
 
 error: this `if` expression is missing a block after the condition
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:24:5
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:23:5
    |
 LL |     if let Some(n) = opt else {
    |     ^^
    |
 help: add a block here
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:24:25
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:23:25
    |
 LL |     if let Some(n) = opt else {
    |                         ^
@@ -44,31 +46,31 @@ LL +     let Some(n) = opt else {
    |
 
 error: this `if` expression is missing a block after the condition
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:28:5
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:27:5
    |
 LL |     if let Some(n) = opt && n == 1 else {
    |     ^^
    |
 help: add a block here
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:28:35
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:27:35
    |
 LL |     if let Some(n) = opt && n == 1 else {
    |                                   ^
 
 error: this `if` expression is missing a block after the condition
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:32:5
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:31:5
    |
 LL |     if let Some(n) = opt && let another = n else {
    |     ^^
    |
 help: add a block here
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:32:44
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:31:44
    |
 LL |     if let Some(n) = opt && let another = n else {
    |                                            ^
 
 error: expected `{`, found keyword `else`
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:38:33
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:37:33
    |
 LL |         while let Some(n) = opt else {
    |         ----- ----------------- ^^^^ expected `{`
@@ -77,7 +79,7 @@ LL |         while let Some(n) = opt else {
    |         while parsing the body of this `while` expression
 
 error: expected `{`, found keyword `else`
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:44:43
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:43:43
    |
 LL |         while let Some(n) = opt && n == 1 else {
    |         ----- --------------------------- ^^^^ expected `{`
@@ -86,7 +88,7 @@ LL |         while let Some(n) = opt && n == 1 else {
    |         while parsing the body of this `while` expression
 
 error: expected `{`, found keyword `else`
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:50:52
+  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:49:52
    |
 LL |         while let Some(n) = opt && let another = n else {
    |         ----- ------------------------------------ ^^^^ expected `{`
@@ -94,14 +96,6 @@ LL |         while let Some(n) = opt && let another = n else {
    |         |     this `while` condition successfully parsed
    |         while parsing the body of this `while` expression
 
-error: `let` expressions are not supported here
-  --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:15:26
-   |
-LL |     let Some(n) = opt && let another = n else {
-   |                          ^^^^^^^^^^^^^^^
-   |
-   = note: only supported directly in conditions of `if` and `while` expressions
-
 error[E0308]: mismatched types
   --> $DIR/ensure-that-let-else-does-not-interact-with-let-chains.rs:9:19
    |
@@ -142,6 +136,6 @@ LL |     let Some(n) = opt && let another = n else {
    = note: expected type `bool`
               found enum `Option<_>`
 
-error: aborting due to 14 previous errors
+error: aborting due to 13 previous errors
 
 For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.rs
index 2b407ef510c..bca7564efd8 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.rs
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.rs
@@ -43,8 +43,7 @@ fn _macros() {
     macro_rules! noop_expr { ($e:expr) => {}; }
 
     noop_expr!((let 0 = 1));
-    //~^ ERROR `let` expressions in this position are unstable [E0658]
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
 
     macro_rules! use_expr {
         ($e:expr) => {
@@ -53,8 +52,7 @@ fn _macros() {
         }
     }
     #[cfg(FALSE)] (let 0 = 1);
-    //~^ ERROR `let` expressions in this position are unstable [E0658]
-    //~| ERROR expected expression, found `let` statement
+    //~^ ERROR expected expression, found `let` statement
     use_expr!(let 0 = 1);
     //~^ ERROR no rules expected the token `let`
 }
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.stderr
index 7a43b71fc8b..6f74736755e 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.stderr
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/feature-gate.stderr
@@ -1,17 +1,21 @@
 error: expected expression, found `let` statement
-  --> $DIR/feature-gate.rs:55:20
+  --> $DIR/feature-gate.rs:54:20
    |
 LL |     #[cfg(FALSE)] (let 0 = 1);
    |                    ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: expected expression, found `let` statement
   --> $DIR/feature-gate.rs:45:17
    |
 LL |     noop_expr!((let 0 = 1));
    |                 ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: no rules expected the token `let`
-  --> $DIR/feature-gate.rs:58:15
+  --> $DIR/feature-gate.rs:56:15
    |
 LL |     macro_rules! use_expr {
    |     --------------------- when calling this macro
@@ -20,7 +24,7 @@ LL |     use_expr!(let 0 = 1);
    |               ^^^ no rules expected this token in macro call
    |
 note: while trying to match meta-variable `$e:expr`
-  --> $DIR/feature-gate.rs:50:10
+  --> $DIR/feature-gate.rs:49:10
    |
 LL |         ($e:expr) => {
    |          ^^^^^^^
@@ -97,24 +101,6 @@ LL |     while let Range { start: _, end: _ } = (true..true) && false {}
    = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
    = help: add `#![feature(let_chains)]` to the crate attributes to enable
 
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:55:20
-   |
-LL |     #[cfg(FALSE)] (let 0 = 1);
-   |                    ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error[E0658]: `let` expressions in this position are unstable
-  --> $DIR/feature-gate.rs:45:17
-   |
-LL |     noop_expr!((let 0 = 1));
-   |                 ^^^^^^^^^
-   |
-   = note: see issue #53667 <https://github.com/rust-lang/rust/issues/53667> for more information
-   = help: add `#![feature(let_chains)]` to the crate attributes to enable
-
-error: aborting due to 13 previous errors
+error: aborting due to 11 previous errors
 
 For more information about this error, try `rustc --explain E0658`.
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs b/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs
index a942d1f4caf..dce1c19ff33 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.rs
@@ -13,6 +13,7 @@ fn main() {
         if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 {
         //~^ ERROR expected expression, found `let` statement
         //~| ERROR expected expression, found `let` statement
+        //~| ERROR expected expression, found `let` statement
             true
         }
     }
@@ -31,6 +32,7 @@ fn main() {
     {
         if let Some(elem) = _opt && [1, 2, 3][let _ = ()] = 1 {
         //~^ ERROR expected expression, found `let` statement
+        //~| ERROR expected expression, found `let` statement
             true
         }
     }
diff --git a/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr b/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr
index d1ce83c7233..247fad2e992 100644
--- a/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr
+++ b/tests/ui/rfcs/rfc-2497-if-let-chains/invalid-let-in-a-valid-let-context.stderr
@@ -3,36 +3,64 @@ error: expected expression, found `let` statement
    |
 LL |         let _ = &&let Some(x) = Some(42);
    |                   ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: expected expression, found `let` statement
   --> $DIR/invalid-let-in-a-valid-let-context.rs:13:47
    |
 LL |         if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 {
    |                                               ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: expected expression, found `let` statement
   --> $DIR/invalid-let-in-a-valid-let-context.rs:13:57
    |
 LL |         if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 {
    |                                                         ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/invalid-let-in-a-valid-let-context.rs:13:12
+   |
+LL |         if let Some(elem) = _opt && [1, 2, 3][let _ = &&let Some(x) = Some(42)] = 1 {
+   |            ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: expected expression, found `let` statement
-  --> $DIR/invalid-let-in-a-valid-let-context.rs:23:23
+  --> $DIR/invalid-let-in-a-valid-let-context.rs:24:23
    |
 LL |             [1, 2, 3][let _ = ()];
    |                       ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: expected expression, found `let` statement
-  --> $DIR/invalid-let-in-a-valid-let-context.rs:32:47
+  --> $DIR/invalid-let-in-a-valid-let-context.rs:33:47
    |
 LL |         if let Some(elem) = _opt && [1, 2, 3][let _ = ()] = 1 {
    |                                               ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
+
+error: expected expression, found `let` statement
+  --> $DIR/invalid-let-in-a-valid-let-context.rs:33:12
+   |
+LL |         if let Some(elem) = _opt && [1, 2, 3][let _ = ()] = 1 {
+   |            ^^^^^^^^^^^^^^^^^^^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
 error: expected expression, found `let` statement
-  --> $DIR/invalid-let-in-a-valid-let-context.rs:40:21
+  --> $DIR/invalid-let-in-a-valid-let-context.rs:42:21
    |
 LL |             let x = let y = 1;
    |                     ^^^
+   |
+   = note: only supported directly in conditions of `if` and `while` expressions
 
-error: aborting due to 6 previous errors
+error: aborting due to 8 previous errors
 
diff --git a/tests/ui/rfcs/rfc-2632-const-trait-impl/effects/fallback.rs b/tests/ui/rfcs/rfc-2632-const-trait-impl/effects/fallback.rs
new file mode 100644
index 00000000000..da2778f6101
--- /dev/null
+++ b/tests/ui/rfcs/rfc-2632-const-trait-impl/effects/fallback.rs
@@ -0,0 +1,16 @@
+// check-pass
+
+#![feature(effects)]
+
+pub const fn owo() {}
+
+fn main() {
+    // make sure falling back ty/int vars doesn't cause const fallback to be skipped...
+    // See issue: 115791.
+    let _ = 1;
+    if false {
+        let x = panic!();
+    }
+
+    let _ = owo;
+}
diff --git a/tests/ui/rmeta/auxiliary/rmeta-meta.rs b/tests/ui/rmeta/auxiliary/rmeta-meta.rs
index 6d8ed95bd38..6d435049527 100644
--- a/tests/ui/rmeta/auxiliary/rmeta-meta.rs
+++ b/tests/ui/rmeta/auxiliary/rmeta-meta.rs
@@ -6,3 +6,7 @@
 pub struct Foo {
     pub field: i32,
 }
+
+pub fn missing_optimized_mir() {
+    println!("indeed");
+}
diff --git a/tests/ui/rmeta/no_optitimized_mir.rs b/tests/ui/rmeta/no_optitimized_mir.rs
new file mode 100644
index 00000000000..c503005f16b
--- /dev/null
+++ b/tests/ui/rmeta/no_optitimized_mir.rs
@@ -0,0 +1,11 @@
+// aux-build:rmeta-meta.rs
+// no-prefer-dynamic
+// build-fail
+
+// Check that we do not ICE when we need optimized MIR but it is missing.
+
+extern crate rmeta_meta;
+
+fn main() {
+    rmeta_meta::missing_optimized_mir();
+}
diff --git a/tests/ui/rmeta/no_optitimized_mir.stderr b/tests/ui/rmeta/no_optitimized_mir.stderr
new file mode 100644
index 00000000000..a17024c5310
--- /dev/null
+++ b/tests/ui/rmeta/no_optitimized_mir.stderr
@@ -0,0 +1,10 @@
+error: missing optimized MIR for an item in the crate `rmeta_meta`
+   |
+note: missing optimized MIR for this item (was the crate `rmeta_meta` compiled with `--emit=metadata`?)
+  --> $DIR/auxiliary/rmeta-meta.rs:10:1
+   |
+LL | pub fn missing_optimized_mir() {
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+
diff --git a/tests/ui/sanitize/cfg.rs b/tests/ui/sanitize/cfg.rs
index c0f08a6d1e5..523de1ceaee 100644
--- a/tests/ui/sanitize/cfg.rs
+++ b/tests/ui/sanitize/cfg.rs
@@ -2,19 +2,19 @@
 // the `#[cfg(sanitize = "option")]` attribute is configured.
 
 // needs-sanitizer-support
-// needs-sanitizer-address
-// needs-sanitizer-cfi
-// needs-sanitizer-kcfi
-// needs-sanitizer-leak
-// needs-sanitizer-memory
-// needs-sanitizer-thread
 // check-pass
-// revisions: address leak memory thread
+// revisions: address cfi kcfi leak memory thread
+//[address]needs-sanitizer-address
 //[address]compile-flags: -Zsanitizer=address --cfg address
-//[cfi]compile-flags:     -Zsanitizer=cfi     --cfg cfi
+//[cfi]needs-sanitizer-cfi
+//[cfi]compile-flags:     -Zsanitizer=cfi     --cfg cfi -Clto
+//[kcfi]needs-sanitizer-kcfi
 //[kcfi]compile-flags:    -Zsanitizer=kcfi    --cfg kcfi
+//[leak]needs-sanitizer-leak
 //[leak]compile-flags:    -Zsanitizer=leak    --cfg leak
+//[memory]needs-sanitizer-memory
 //[memory]compile-flags:  -Zsanitizer=memory  --cfg memory
+//[thread]needs-sanitizer-thread
 //[thread]compile-flags:  -Zsanitizer=thread  --cfg thread
 
 #![feature(cfg_sanitize)]
diff --git a/tests/ui/span/issue-29595.stderr b/tests/ui/span/issue-29595.stderr
index 92445e40731..7d603cdbfe5 100644
--- a/tests/ui/span/issue-29595.stderr
+++ b/tests/ui/span/issue-29595.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `u8: Tr` is not satisfied
    |
 LL |     let a: u8 = Tr::C;
    |                 ^^^^^ the trait `Tr` is not implemented for `u8`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-29595.rs:1:1
+   |
+LL | trait Tr {
+   | ^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/span/send-is-not-static-std-sync.rs b/tests/ui/span/send-is-not-static-std-sync.rs
index f8ab5243c22..9c1ee287154 100644
--- a/tests/ui/span/send-is-not-static-std-sync.rs
+++ b/tests/ui/span/send-is-not-static-std-sync.rs
@@ -46,7 +46,7 @@ fn channel() {
         tx.send(&z).unwrap();
     }
     //~^^ ERROR `z` does not live long enough
-    // (channels lack #[may_dangle], thus their dtors are implicit uses of `z`)
+    tx.use_ref(); // (channel drop glue does not use `z` => needs explicit use)
 }
 
 fn main() {}
diff --git a/tests/ui/span/send-is-not-static-std-sync.stderr b/tests/ui/span/send-is-not-static-std-sync.stderr
index eaba415adaa..46534b39168 100644
--- a/tests/ui/span/send-is-not-static-std-sync.stderr
+++ b/tests/ui/span/send-is-not-static-std-sync.stderr
@@ -75,11 +75,9 @@ LL |         tx.send(&z).unwrap();
    |                 ^^ borrowed value does not live long enough
 LL |     }
    |     - `z` dropped here while still borrowed
-...
-LL | }
-   | - borrow might be used here, when `tx` is dropped and runs the `Drop` code for type `Sender`
-   |
-   = note: values in a scope are dropped in the opposite order they are defined
+LL |
+LL |     tx.use_ref(); // (channel drop glue does not use `z` => needs explicit use)
+   |     -- borrow later used here
 
 error: aborting due to 6 previous errors
 
diff --git a/tests/ui/specialization/issue-38091.stderr b/tests/ui/specialization/issue-38091.stderr
index f2210a40719..4d840482b46 100644
--- a/tests/ui/specialization/issue-38091.stderr
+++ b/tests/ui/specialization/issue-38091.stderr
@@ -14,6 +14,11 @@ error[E0277]: the trait bound `(): Valid` is not satisfied
 LL |     default type Ty = ();
    |                       ^^ the trait `Valid` is not implemented for `()`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-38091.rs:20:1
+   |
+LL | trait Valid {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Iterate::Ty`
   --> $DIR/issue-38091.rs:5:14
    |
diff --git a/tests/ui/static/static-reference-to-fn-1.stderr b/tests/ui/static/static-reference-to-fn-1.stderr
index b68352b5183..86c4eaa7eb4 100644
--- a/tests/ui/static/static-reference-to-fn-1.stderr
+++ b/tests/ui/static/static-reference-to-fn-1.stderr
@@ -7,7 +7,6 @@ LL |         func: &foo,
    = note: expected reference `&fn() -> Option<isize>`
               found reference `&fn() -> Option<isize> {foo}`
    = note: fn items are distinct from fn pointers
-   = note: when the arguments and return types match, functions can be coerced to function pointers
 help: consider casting to a fn pointer
    |
 LL |         func: &(foo as fn() -> Option<isize>),
diff --git a/tests/ui/suggestions/issue-89333.stderr b/tests/ui/suggestions/issue-89333.stderr
index f73f1147d5d..4739f11ddad 100644
--- a/tests/ui/suggestions/issue-89333.stderr
+++ b/tests/ui/suggestions/issue-89333.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `for<'a> &'a _: Trait` is not satisfied
 LL |     test(&|| 0);
    |     ^^^^ the trait `for<'a> Trait` is not implemented for `&'a _`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-89333.rs:9:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `test`
   --> $DIR/issue-89333.rs:11:55
    |
diff --git a/tests/ui/test-attrs/issue-36768.rs b/tests/ui/test-attrs/issue-36768.rs
index f671cbc8205..7531f3621f5 100644
--- a/tests/ui/test-attrs/issue-36768.rs
+++ b/tests/ui/test-attrs/issue-36768.rs
@@ -1,6 +1,6 @@
 // run-pass
 // compile-flags:--test
-#![deny(private_in_public)]
+#![deny(private_interfaces)]
 
 #[test] fn foo() {}
 mod foo {}
diff --git a/tests/ui/thir-print/thir-flat-const-variant.stdout b/tests/ui/thir-print/thir-flat-const-variant.stdout
index 7bddc925996..af7f2b67152 100644
--- a/tests/ui/thir-print/thir-flat-const-variant.stdout
+++ b/tests/ui/thir-print/thir-flat-const-variant.stdout
@@ -1,7 +1,11 @@
 DefId(0:8 ~ thir_flat_const_variant[1f54]::{impl#0}::BAR1):
 Thir {
     body_type: Const(
-        Foo,
+        Adt(
+            Foo,
+            [
+            ],
+        ),
     ),
     arms: [],
     blocks: [],
@@ -46,7 +50,11 @@ Thir {
                     base: None,
                 },
             ),
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -60,7 +68,11 @@ Thir {
                 ),
                 value: e2,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -72,7 +84,11 @@ Thir {
                 lint_level: Inherited,
                 value: e3,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -86,7 +102,11 @@ Thir {
 DefId(0:9 ~ thir_flat_const_variant[1f54]::{impl#0}::BAR2):
 Thir {
     body_type: Const(
-        Foo,
+        Adt(
+            Foo,
+            [
+            ],
+        ),
     ),
     arms: [],
     blocks: [],
@@ -131,7 +151,11 @@ Thir {
                     base: None,
                 },
             ),
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -145,7 +169,11 @@ Thir {
                 ),
                 value: e2,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -157,7 +185,11 @@ Thir {
                 lint_level: Inherited,
                 value: e3,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -171,7 +203,11 @@ Thir {
 DefId(0:10 ~ thir_flat_const_variant[1f54]::{impl#0}::BAR3):
 Thir {
     body_type: Const(
-        Foo,
+        Adt(
+            Foo,
+            [
+            ],
+        ),
     ),
     arms: [],
     blocks: [],
@@ -216,7 +252,11 @@ Thir {
                     base: None,
                 },
             ),
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -230,7 +270,11 @@ Thir {
                 ),
                 value: e2,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -242,7 +286,11 @@ Thir {
                 lint_level: Inherited,
                 value: e3,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -256,7 +304,11 @@ Thir {
 DefId(0:11 ~ thir_flat_const_variant[1f54]::{impl#0}::BAR4):
 Thir {
     body_type: Const(
-        Foo,
+        Adt(
+            Foo,
+            [
+            ],
+        ),
     ),
     arms: [],
     blocks: [],
@@ -301,7 +353,11 @@ Thir {
                     base: None,
                 },
             ),
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -315,7 +371,11 @@ Thir {
                 ),
                 value: e2,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
@@ -327,7 +387,11 @@ Thir {
                 lint_level: Inherited,
                 value: e3,
             },
-            ty: Foo,
+            ty: Adt(
+                Foo,
+                [
+                ],
+            ),
             temp_lifetime: Some(
                 Node(3),
             ),
diff --git a/tests/ui/thir-print/thir-tree-match.stdout b/tests/ui/thir-print/thir-tree-match.stdout
index 3fc130f0176..0e21b98307b 100644
--- a/tests/ui/thir-print/thir-tree-match.stdout
+++ b/tests/ui/thir-print/thir-tree-match.stdout
@@ -1,13 +1,13 @@
 DefId(0:16 ~ thir_tree_match[fcf8]::has_match):
 params: [
     Param {
-        ty: Foo
+        ty: Adt(Foo, [])
         ty_span: Some($DIR/thir-tree-match.rs:15:19: 15:22 (#0))
         self_kind: None
         hir_id: Some(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).1))
         param: Some( 
             Pat: {
-                ty: Foo
+                ty: Adt(Foo, [])
                 span: $DIR/thir-tree-match.rs:15:14: 15:17 (#0)
                 kind: PatKind {
                     Binding {
@@ -15,7 +15,7 @@ params: [
                         name: "foo"
                         mode: ByValue
                         var: LocalVarId(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).2))
-                        ty: Foo
+                        ty: Adt(Foo, [])
                         is_primary: true
                         subpattern: None
                     }
@@ -73,7 +73,7 @@ body:
                                                                             Match {
                                                                                 scrutinee:
                                                                                     Expr {
-                                                                                        ty: Foo
+                                                                                        ty: Adt(Foo, [])
                                                                                         temp_lifetime: Some(Node(26))
                                                                                         span: $DIR/thir-tree-match.rs:16:11: 16:14 (#0)
                                                                                         kind: 
@@ -82,7 +82,7 @@ body:
                                                                                                 lint_level: Explicit(HirId(DefId(0:16 ~ thir_tree_match[fcf8]::has_match).4))
                                                                                                 value:
                                                                                                     Expr {
-                                                                                                        ty: Foo
+                                                                                                        ty: Adt(Foo, [])
                                                                                                         temp_lifetime: Some(Node(26))
                                                                                                         span: $DIR/thir-tree-match.rs:16:11: 16:14 (#0)
                                                                                                         kind: 
@@ -96,7 +96,7 @@ body:
                                                                                     Arm {
                                                                                         pattern: 
                                                                                             Pat: {
-                                                                                                ty: Foo
+                                                                                                ty: Adt(Foo, [])
                                                                                                 span: $DIR/thir-tree-match.rs:17:9: 17:32 (#0)
                                                                                                 kind: PatKind {
                                                                                                     Variant {
@@ -110,7 +110,7 @@ body:
                                                                                                         variant_index: 0
                                                                                                         subpatterns: [
                                                                                                             Pat: {
-                                                                                                                ty: Bar
+                                                                                                                ty: Adt(Bar, [])
                                                                                                                 span: $DIR/thir-tree-match.rs:17:21: 17:31 (#0)
                                                                                                                 kind: PatKind {
                                                                                                                     Variant {
@@ -169,7 +169,7 @@ body:
                                                                                     Arm {
                                                                                         pattern: 
                                                                                             Pat: {
-                                                                                                ty: Foo
+                                                                                                ty: Adt(Foo, [])
                                                                                                 span: $DIR/thir-tree-match.rs:18:9: 18:23 (#0)
                                                                                                 kind: PatKind {
                                                                                                     Variant {
@@ -183,7 +183,7 @@ body:
                                                                                                         variant_index: 0
                                                                                                         subpatterns: [
                                                                                                             Pat: {
-                                                                                                                ty: Bar
+                                                                                                                ty: Adt(Bar, [])
                                                                                                                 span: $DIR/thir-tree-match.rs:18:21: 18:22 (#0)
                                                                                                                 kind: PatKind {
                                                                                                                     Wild
@@ -232,7 +232,7 @@ body:
                                                                                     Arm {
                                                                                         pattern: 
                                                                                             Pat: {
-                                                                                                ty: Foo
+                                                                                                ty: Adt(Foo, [])
                                                                                                 span: $DIR/thir-tree-match.rs:19:9: 19:20 (#0)
                                                                                                 kind: PatKind {
                                                                                                     Variant {
diff --git a/tests/ui/trait-bounds/issue-82038.rs b/tests/ui/trait-bounds/issue-82038.rs
new file mode 100644
index 00000000000..11de714faf0
--- /dev/null
+++ b/tests/ui/trait-bounds/issue-82038.rs
@@ -0,0 +1,9 @@
+// Failed bound `bool: Foo` must not point at the `Self: Clone` line
+
+trait Foo {
+    fn my_method() where Self: Clone;
+}
+
+fn main() {
+    <bool as Foo>::my_method(); //~ERROR [E0277]
+}
diff --git a/tests/ui/trait-bounds/issue-82038.stderr b/tests/ui/trait-bounds/issue-82038.stderr
new file mode 100644
index 00000000000..30bb4a0a850
--- /dev/null
+++ b/tests/ui/trait-bounds/issue-82038.stderr
@@ -0,0 +1,15 @@
+error[E0277]: the trait bound `bool: Foo` is not satisfied
+  --> $DIR/issue-82038.rs:8:6
+   |
+LL |     <bool as Foo>::my_method();
+   |      ^^^^ the trait `Foo` is not implemented for `bool`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-82038.rs:3:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/traits/bound/on-structs-and-enums-in-fns.stderr b/tests/ui/traits/bound/on-structs-and-enums-in-fns.stderr
index 61237a63e32..530264b344a 100644
--- a/tests/ui/traits/bound/on-structs-and-enums-in-fns.stderr
+++ b/tests/ui/traits/bound/on-structs-and-enums-in-fns.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `u32: Trait` is not satisfied
 LL | fn explode(x: Foo<u32>) {}
    |               ^^^^^^^^ the trait `Trait` is not implemented for `u32`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums-in-fns.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums-in-fns.rs:3:14
    |
@@ -16,6 +21,11 @@ error[E0277]: the trait bound `f32: Trait` is not satisfied
 LL | fn kaboom(y: Bar<f32>) {}
    |              ^^^^^^^^ the trait `Trait` is not implemented for `f32`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums-in-fns.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Bar`
   --> $DIR/on-structs-and-enums-in-fns.rs:7:12
    |
diff --git a/tests/ui/traits/bound/on-structs-and-enums-in-impls.stderr b/tests/ui/traits/bound/on-structs-and-enums-in-impls.stderr
index 8a43742260b..372bbabbd86 100644
--- a/tests/ui/traits/bound/on-structs-and-enums-in-impls.stderr
+++ b/tests/ui/traits/bound/on-structs-and-enums-in-impls.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `u16: Trait` is not satisfied
 LL | impl PolyTrait<Foo<u16>> for Struct {
    |      ^^^^^^^^^^^^^^^^^^^ the trait `Trait` is not implemented for `u16`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums-in-impls.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums-in-impls.rs:3:14
    |
diff --git a/tests/ui/traits/bound/on-structs-and-enums-locals.stderr b/tests/ui/traits/bound/on-structs-and-enums-locals.stderr
index 20bbe69c059..01cf76c62d5 100644
--- a/tests/ui/traits/bound/on-structs-and-enums-locals.stderr
+++ b/tests/ui/traits/bound/on-structs-and-enums-locals.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `usize: Trait` is not satisfied
 LL |     let baz: Foo<usize> = loop { };
    |              ^^^^^^^^^^ the trait `Trait` is not implemented for `usize`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums-locals.rs:1:1
+   |
+LL | trait Trait {
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums-locals.rs:5:14
    |
@@ -16,6 +21,11 @@ error[E0277]: the trait bound `{integer}: Trait` is not satisfied
 LL |         x: 3
    |            ^ the trait `Trait` is not implemented for `{integer}`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums-locals.rs:1:1
+   |
+LL | trait Trait {
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums-locals.rs:5:14
    |
diff --git a/tests/ui/traits/bound/on-structs-and-enums-static.stderr b/tests/ui/traits/bound/on-structs-and-enums-static.stderr
index fda734e8571..fa14aff684d 100644
--- a/tests/ui/traits/bound/on-structs-and-enums-static.stderr
+++ b/tests/ui/traits/bound/on-structs-and-enums-static.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `usize: Trait` is not satisfied
 LL | static X: Foo<usize> = Foo {
    |           ^^^^^^^^^^ the trait `Trait` is not implemented for `usize`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums-static.rs:1:1
+   |
+LL | trait Trait {
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums-static.rs:5:14
    |
diff --git a/tests/ui/traits/bound/on-structs-and-enums.stderr b/tests/ui/traits/bound/on-structs-and-enums.stderr
index fe05b86344b..606f764852f 100644
--- a/tests/ui/traits/bound/on-structs-and-enums.stderr
+++ b/tests/ui/traits/bound/on-structs-and-enums.stderr
@@ -20,6 +20,11 @@ error[E0277]: the trait bound `isize: Trait` is not satisfied
 LL |     a: Foo<isize>,
    |        ^^^^^^^^^^ the trait `Trait` is not implemented for `isize`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums.rs:3:14
    |
@@ -32,6 +37,11 @@ error[E0277]: the trait bound `usize: Trait` is not satisfied
 LL |     Quux(Bar<usize>),
    |          ^^^^^^^^^^ the trait `Trait` is not implemented for `usize`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Bar`
   --> $DIR/on-structs-and-enums.rs:7:12
    |
@@ -76,6 +86,11 @@ error[E0277]: the trait bound `i32: Trait` is not satisfied
 LL |     Foo<i32>,
    |     ^^^^^^^^ the trait `Trait` is not implemented for `i32`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Foo`
   --> $DIR/on-structs-and-enums.rs:3:14
    |
@@ -88,6 +103,11 @@ error[E0277]: the trait bound `u8: Trait` is not satisfied
 LL |     DictionaryLike { field: Bar<u8> },
    |                             ^^^^^^^ the trait `Trait` is not implemented for `u8`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/on-structs-and-enums.rs:1:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `Bar`
   --> $DIR/on-structs-and-enums.rs:7:12
    |
diff --git a/tests/ui/traits/deny-builtin-object-impl.current.stderr b/tests/ui/traits/deny-builtin-object-impl.current.stderr
index 5c1987426f7..8ca3d3a057f 100644
--- a/tests/ui/traits/deny-builtin-object-impl.current.stderr
+++ b/tests/ui/traits/deny-builtin-object-impl.current.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `dyn NotObject: NotObject` is not satisfied
 LL |     test_not_object::<dyn NotObject>();
    |                       ^^^^^^^^^^^^^ the trait `NotObject` is not implemented for `dyn NotObject`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/deny-builtin-object-impl.rs:10:1
+   |
+LL | trait NotObject {}
+   | ^^^^^^^^^^^^^^^
 note: required by a bound in `test_not_object`
   --> $DIR/deny-builtin-object-impl.rs:14:23
    |
diff --git a/tests/ui/traits/deny-builtin-object-impl.next.stderr b/tests/ui/traits/deny-builtin-object-impl.next.stderr
index 5c1987426f7..8ca3d3a057f 100644
--- a/tests/ui/traits/deny-builtin-object-impl.next.stderr
+++ b/tests/ui/traits/deny-builtin-object-impl.next.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `dyn NotObject: NotObject` is not satisfied
 LL |     test_not_object::<dyn NotObject>();
    |                       ^^^^^^^^^^^^^ the trait `NotObject` is not implemented for `dyn NotObject`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/deny-builtin-object-impl.rs:10:1
+   |
+LL | trait NotObject {}
+   | ^^^^^^^^^^^^^^^
 note: required by a bound in `test_not_object`
   --> $DIR/deny-builtin-object-impl.rs:14:23
    |
diff --git a/tests/ui/traits/dont-autoderef-ty-with-escaping-var.stderr b/tests/ui/traits/dont-autoderef-ty-with-escaping-var.stderr
index 263c59ee327..a5d0e6ab095 100644
--- a/tests/ui/traits/dont-autoderef-ty-with-escaping-var.stderr
+++ b/tests/ui/traits/dont-autoderef-ty-with-escaping-var.stderr
@@ -10,6 +10,11 @@ error[E0277]: the trait bound `for<'a> &'a mut Vec<&'a u32>: Foo<'static, i32>`
 LL |     <i32 as RefFoo<i32>>::ref_foo(unknown);
    |      ^^^ the trait `for<'a> Foo<'static, i32>` is not implemented for `&'a mut Vec<&'a u32>`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/dont-autoderef-ty-with-escaping-var.rs:3:1
+   |
+LL | trait Foo<'x, T> {}
+   | ^^^^^^^^^^^^^^^^
 note: required for `i32` to implement `RefFoo<i32>`
   --> $DIR/dont-autoderef-ty-with-escaping-var.rs:9:9
    |
diff --git a/tests/ui/traits/impl-bounds-checking.stderr b/tests/ui/traits/impl-bounds-checking.stderr
index 1f969efe114..bfa8213abe7 100644
--- a/tests/ui/traits/impl-bounds-checking.stderr
+++ b/tests/ui/traits/impl-bounds-checking.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `isize: Clone2` is not satisfied
 LL | impl Getter<isize> for isize {
    |                        ^^^^^ the trait `Clone2` is not implemented for `isize`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/impl-bounds-checking.rs:1:1
+   |
+LL | pub trait Clone2 {
+   | ^^^^^^^^^^^^^^^^
 note: required by a bound in `Getter`
   --> $DIR/impl-bounds-checking.rs:6:17
    |
diff --git a/tests/ui/traits/issue-105231.rs b/tests/ui/traits/issue-105231.rs
index bb2b13664ba..74c7afd6b9e 100644
--- a/tests/ui/traits/issue-105231.rs
+++ b/tests/ui/traits/issue-105231.rs
@@ -1,9 +1,9 @@
+//~ ERROR overflow evaluating the requirement `A<A<A<A<A<A<A<...>>>>>>>: Send`
 struct A<T>(B<T>);
 //~^ ERROR recursive types `A` and `B` have infinite size
 struct B<T>(A<A<T>>);
 trait Foo {}
 impl<T> Foo for T where T: Send {}
-//~^ ERROR overflow evaluating the requirement `A<A<A<A<A<A<A<...>>>>>>>: Send`
 impl Foo for B<u8> {}
 
 fn main() {}
diff --git a/tests/ui/traits/issue-105231.stderr b/tests/ui/traits/issue-105231.stderr
index 76a71067353..fe20c47c57a 100644
--- a/tests/ui/traits/issue-105231.stderr
+++ b/tests/ui/traits/issue-105231.stderr
@@ -1,5 +1,5 @@
 error[E0072]: recursive types `A` and `B` have infinite size
-  --> $DIR/issue-105231.rs:1:1
+  --> $DIR/issue-105231.rs:2:1
    |
 LL | struct A<T>(B<T>);
    | ^^^^^^^^^^^ ---- recursive without indirection
@@ -15,14 +15,10 @@ LL ~ struct B<T>(Box<A<A<T>>>);
    |
 
 error[E0275]: overflow evaluating the requirement `A<A<A<A<A<A<A<...>>>>>>>: Send`
-  --> $DIR/issue-105231.rs:5:28
-   |
-LL | impl<T> Foo for T where T: Send {}
-   |                            ^^^^
    |
    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`issue_105231`)
 note: required because it appears within the type `B<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<A<u8>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`
-  --> $DIR/issue-105231.rs:3:8
+  --> $DIR/issue-105231.rs:4:8
    |
 LL | struct B<T>(A<A<T>>);
    |        ^
diff --git a/tests/ui/traits/new-solver/canonicalize-effect-var.rs b/tests/ui/traits/new-solver/canonicalize-effect-var.rs
new file mode 100644
index 00000000000..35b69ed1a6b
--- /dev/null
+++ b/tests/ui/traits/new-solver/canonicalize-effect-var.rs
@@ -0,0 +1,22 @@
+// compile-flags: -Ztrait-solver=next
+// check-pass
+
+#![feature(effects)]
+#![feature(const_trait_impl)]
+
+#[const_trait]
+trait Foo {
+    fn foo();
+}
+
+trait Bar {}
+
+impl const Foo for i32 {
+    fn foo() {}
+}
+
+impl<T> const Foo for T where T: Bar {
+    fn foo() {}
+}
+
+fn main() {}
diff --git a/tests/ui/traits/new-solver/dont-ice-on-assoc-projection.rs b/tests/ui/traits/new-solver/dont-ice-on-assoc-projection.rs
new file mode 100644
index 00000000000..b9798c79d5e
--- /dev/null
+++ b/tests/ui/traits/new-solver/dont-ice-on-assoc-projection.rs
@@ -0,0 +1,19 @@
+// compile-flags: -Ztrait-solver=next-coherence
+
+// Makes sure we don't ICE on associated const projection when the feature gate
+// is not enabled, since we should avoid encountering ICEs on stable if possible.
+
+trait Bar {
+    const ASSOC: usize;
+}
+impl Bar for () {
+    const ASSOC: usize = 1;
+}
+
+trait Foo {}
+impl Foo for () {}
+impl<T> Foo for T where T: Bar<ASSOC = 0> {}
+//~^ ERROR associated const equality is incomplete
+//~| ERROR conflicting implementations of trait `Foo` for type `()`
+
+fn main() {}
diff --git a/tests/ui/traits/new-solver/dont-ice-on-assoc-projection.stderr b/tests/ui/traits/new-solver/dont-ice-on-assoc-projection.stderr
new file mode 100644
index 00000000000..7ad495a35e0
--- /dev/null
+++ b/tests/ui/traits/new-solver/dont-ice-on-assoc-projection.stderr
@@ -0,0 +1,21 @@
+error[E0658]: associated const equality is incomplete
+  --> $DIR/dont-ice-on-assoc-projection.rs:15:32
+   |
+LL | impl<T> Foo for T where T: Bar<ASSOC = 0> {}
+   |                                ^^^^^^^^^
+   |
+   = note: see issue #92827 <https://github.com/rust-lang/rust/issues/92827> for more information
+   = help: add `#![feature(associated_const_equality)]` to the crate attributes to enable
+
+error[E0119]: conflicting implementations of trait `Foo` for type `()`
+  --> $DIR/dont-ice-on-assoc-projection.rs:15:1
+   |
+LL | impl Foo for () {}
+   | --------------- first implementation here
+LL | impl<T> Foo for T where T: Bar<ASSOC = 0> {}
+   | ^^^^^^^^^^^^^^^^^ conflicting implementation for `()`
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0119, E0658.
+For more information about an error, try `rustc --explain E0119`.
diff --git a/tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.rs b/tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.rs
new file mode 100644
index 00000000000..539c9614e82
--- /dev/null
+++ b/tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.rs
@@ -0,0 +1,12 @@
+//~ ERROR overflow evaluating the requirement `Self well-formed`
+//~| ERROR overflow evaluating the requirement `Self: Trait`
+
+// This is a non-regression test for issue #115351, where a recursion limit of 0 caused an ICE.
+// compile-flags: -Ztrait-solver=next --crate-type=lib
+// check-fail
+
+#![recursion_limit = "0"]
+trait Trait {}
+impl Trait for u32 {}
+//~^ ERROR overflow evaluating the requirement `u32: Trait`
+//~| ERROR overflow evaluating the requirement `u32 well-formed`
diff --git a/tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.stderr b/tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.stderr
new file mode 100644
index 00000000000..16b25d90ace
--- /dev/null
+++ b/tests/ui/traits/new-solver/overflow/recursion-limit-zero-issue-115351.stderr
@@ -0,0 +1,27 @@
+error[E0275]: overflow evaluating the requirement `Self: Trait`
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "2"]` attribute to your crate (`recursion_limit_zero_issue_115351`)
+
+error[E0275]: overflow evaluating the requirement `Self well-formed`
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "2"]` attribute to your crate (`recursion_limit_zero_issue_115351`)
+
+error[E0275]: overflow evaluating the requirement `u32: Trait`
+  --> $DIR/recursion-limit-zero-issue-115351.rs:10:16
+   |
+LL | impl Trait for u32 {}
+   |                ^^^
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "2"]` attribute to your crate (`recursion_limit_zero_issue_115351`)
+
+error[E0275]: overflow evaluating the requirement `u32 well-formed`
+  --> $DIR/recursion-limit-zero-issue-115351.rs:10:16
+   |
+LL | impl Trait for u32 {}
+   |                ^^^
+   |
+   = help: consider increasing the recursion limit by adding a `#![recursion_limit = "2"]` attribute to your crate (`recursion_limit_zero_issue_115351`)
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0275`.
diff --git a/tests/ui/traits/new-solver/projection-discr-kind.stderr b/tests/ui/traits/new-solver/projection-discr-kind.stderr
index 03e28f993e2..e14953f19ff 100644
--- a/tests/ui/traits/new-solver/projection-discr-kind.stderr
+++ b/tests/ui/traits/new-solver/projection-discr-kind.stderr
@@ -6,6 +6,11 @@ LL |     needs_bar(std::mem::discriminant(&x));
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/projection-discr-kind.rs:10:1
+   |
+LL | trait Bar {}
+   | ^^^^^^^^^
 note: required by a bound in `needs_bar`
   --> $DIR/projection-discr-kind.rs:11:22
    |
diff --git a/tests/ui/traits/non_lifetime_binders/fail.stderr b/tests/ui/traits/non_lifetime_binders/fail.stderr
index 7bd02550fb3..240bcef7df5 100644
--- a/tests/ui/traits/non_lifetime_binders/fail.stderr
+++ b/tests/ui/traits/non_lifetime_binders/fail.stderr
@@ -13,6 +13,11 @@ error[E0277]: the trait bound `T: Trait` is not satisfied
 LL |     fail();
    |     ^^^^ the trait `Trait` is not implemented for `T`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/fail.rs:6:1
+   |
+LL | trait Trait {}
+   | ^^^^^^^^^^^
 note: required by a bound in `fail`
   --> $DIR/fail.rs:10:15
    |
diff --git a/tests/ui/traits/object-does-not-impl-trait.stderr b/tests/ui/traits/object-does-not-impl-trait.stderr
index f1dd508a467..81d67255a0b 100644
--- a/tests/ui/traits/object-does-not-impl-trait.stderr
+++ b/tests/ui/traits/object-does-not-impl-trait.stderr
@@ -6,6 +6,11 @@ LL | fn take_object(f: Box<dyn Foo>) { take_foo(f); }
    |                                   |
    |                                   required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/object-does-not-impl-trait.rs:4:1
+   |
+LL | trait Foo {}
+   | ^^^^^^^^^
 note: required by a bound in `take_foo`
   --> $DIR/object-does-not-impl-trait.rs:5:15
    |
diff --git a/tests/ui/traits/object/enforce-supertrait-projection.rs b/tests/ui/traits/object/enforce-supertrait-projection.rs
index 2c9b41eea2a..0ea944ec2df 100644
--- a/tests/ui/traits/object/enforce-supertrait-projection.rs
+++ b/tests/ui/traits/object/enforce-supertrait-projection.rs
@@ -7,7 +7,7 @@ trait Trait: SuperTrait<A = <Self as SuperTrait>::B> {}
 
 fn transmute<A, B>(x: A) -> B {
     foo::<A, B, dyn Trait<A = A, B = B>>(x)
-    //~^ ERROR type mismatch resolving `<dyn Trait<B = B, A = A> as SuperTrait>::A == B`
+    //~^ ERROR type mismatch resolving `<dyn Trait<A = A, B = B> as SuperTrait>::A == B`
 }
 
 fn foo<A, B, T: ?Sized>(x: T::A) -> B
diff --git a/tests/ui/traits/object/enforce-supertrait-projection.stderr b/tests/ui/traits/object/enforce-supertrait-projection.stderr
index 848b4e69a4b..2fb94d34896 100644
--- a/tests/ui/traits/object/enforce-supertrait-projection.stderr
+++ b/tests/ui/traits/object/enforce-supertrait-projection.stderr
@@ -1,4 +1,4 @@
-error[E0271]: type mismatch resolving `<dyn Trait<B = B, A = A> as SuperTrait>::A == B`
+error[E0271]: type mismatch resolving `<dyn Trait<A = A, B = B> as SuperTrait>::A == B`
   --> $DIR/enforce-supertrait-projection.rs:9:17
    |
 LL | fn transmute<A, B>(x: A) -> B {
diff --git a/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.rs b/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.rs
index 206ab07898b..d37943b929a 100644
--- a/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.rs
+++ b/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.rs
@@ -1,3 +1,4 @@
+//~ ERROR overflow
 // A regression test for #111729 checking that we correctly
 // track recursion depth for obligations returned by confirmation.
 use std::panic::RefUnwindSafe;
@@ -14,7 +15,6 @@ struct RootDatabase {
 }
 
 impl<T: RefUnwindSafe> Database for T {
-    //~^ ERROR overflow
     type Storage = SalsaStorage;
 }
 impl Database for RootDatabase {
diff --git a/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.stderr b/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.stderr
index 4123a8199a0..8f9ce3ef1e9 100644
--- a/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.stderr
+++ b/tests/ui/traits/solver-cycles/cycle-via-builtin-auto-trait-impl.stderr
@@ -1,17 +1,13 @@
 error[E0275]: overflow evaluating the requirement `Runtime<RootDatabase>: RefUnwindSafe`
-  --> $DIR/cycle-via-builtin-auto-trait-impl.rs:16:9
-   |
-LL | impl<T: RefUnwindSafe> Database for T {
-   |         ^^^^^^^^^^^^^
    |
    = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`cycle_via_builtin_auto_trait_impl`)
 note: required because it appears within the type `RootDatabase`
-  --> $DIR/cycle-via-builtin-auto-trait-impl.rs:12:8
+  --> $DIR/cycle-via-builtin-auto-trait-impl.rs:13:8
    |
 LL | struct RootDatabase {
    |        ^^^^^^^^^^^^
 note: required for `RootDatabase` to implement `Database`
-  --> $DIR/cycle-via-builtin-auto-trait-impl.rs:16:24
+  --> $DIR/cycle-via-builtin-auto-trait-impl.rs:17:24
    |
 LL | impl<T: RefUnwindSafe> Database for T {
    |         -------------  ^^^^^^^^     ^
diff --git a/tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.rs b/tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.rs
new file mode 100644
index 00000000000..c6f9e345618
--- /dev/null
+++ b/tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.rs
@@ -0,0 +1,15 @@
+fn use_iterator<I>(itr: I)
+where
+    I: IntoIterator<Item = i32>,
+{
+}
+
+fn pass_iterator<I>(i: &dyn IntoIterator<Item = i32, IntoIter = I>)
+where
+    I: Iterator<Item = i32>,
+{
+    use_iterator(i);
+    //~^ ERROR `&dyn IntoIterator<IntoIter = I, Item = i32>` is not an iterator
+}
+
+fn main() {}
diff --git a/tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.stderr b/tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.stderr
new file mode 100644
index 00000000000..bd0e7ca2c02
--- /dev/null
+++ b/tests/ui/traits/suggest-dereferences/dont-suggest-unsize-deref.stderr
@@ -0,0 +1,22 @@
+error[E0277]: `&dyn IntoIterator<IntoIter = I, Item = i32>` is not an iterator
+  --> $DIR/dont-suggest-unsize-deref.rs:11:18
+   |
+LL |     use_iterator(i);
+   |     ------------ ^ `&dyn IntoIterator<IntoIter = I, Item = i32>` is not an iterator
+   |     |
+   |     required by a bound introduced by this call
+   |
+   = help: the trait `Iterator` is not implemented for `&dyn IntoIterator<IntoIter = I, Item = i32>`
+   = note: required for `&dyn IntoIterator<IntoIter = I, Item = i32>` to implement `IntoIterator`
+note: required by a bound in `use_iterator`
+  --> $DIR/dont-suggest-unsize-deref.rs:3:8
+   |
+LL | fn use_iterator<I>(itr: I)
+   |    ------------ required by a bound in this function
+LL | where
+LL |     I: IntoIterator<Item = i32>,
+   |        ^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `use_iterator`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/traits/suggest-deferences/issue-39029.fixed b/tests/ui/traits/suggest-dereferences/issue-39029.fixed
index a1abf668b8b..a1abf668b8b 100644
--- a/tests/ui/traits/suggest-deferences/issue-39029.fixed
+++ b/tests/ui/traits/suggest-dereferences/issue-39029.fixed
diff --git a/tests/ui/traits/suggest-deferences/issue-39029.rs b/tests/ui/traits/suggest-dereferences/issue-39029.rs
index 90d097105ed..90d097105ed 100644
--- a/tests/ui/traits/suggest-deferences/issue-39029.rs
+++ b/tests/ui/traits/suggest-dereferences/issue-39029.rs
diff --git a/tests/ui/traits/suggest-deferences/issue-39029.stderr b/tests/ui/traits/suggest-dereferences/issue-39029.stderr
index 49105de3d69..49105de3d69 100644
--- a/tests/ui/traits/suggest-deferences/issue-39029.stderr
+++ b/tests/ui/traits/suggest-dereferences/issue-39029.stderr
diff --git a/tests/ui/traits/suggest-deferences/issue-62530.fixed b/tests/ui/traits/suggest-dereferences/issue-62530.fixed
index 406caaa007f..406caaa007f 100644
--- a/tests/ui/traits/suggest-deferences/issue-62530.fixed
+++ b/tests/ui/traits/suggest-dereferences/issue-62530.fixed
diff --git a/tests/ui/traits/suggest-deferences/issue-62530.rs b/tests/ui/traits/suggest-dereferences/issue-62530.rs
index 53846be7306..53846be7306 100644
--- a/tests/ui/traits/suggest-deferences/issue-62530.rs
+++ b/tests/ui/traits/suggest-dereferences/issue-62530.rs
diff --git a/tests/ui/traits/suggest-deferences/issue-62530.stderr b/tests/ui/traits/suggest-dereferences/issue-62530.stderr
index e47ae0b65af..e47ae0b65af 100644
--- a/tests/ui/traits/suggest-deferences/issue-62530.stderr
+++ b/tests/ui/traits/suggest-dereferences/issue-62530.stderr
diff --git a/tests/ui/traits/suggest-deferences/multiple-0.fixed b/tests/ui/traits/suggest-dereferences/multiple-0.fixed
index b7160b75c60..b7160b75c60 100644
--- a/tests/ui/traits/suggest-deferences/multiple-0.fixed
+++ b/tests/ui/traits/suggest-dereferences/multiple-0.fixed
diff --git a/tests/ui/traits/suggest-deferences/multiple-0.rs b/tests/ui/traits/suggest-dereferences/multiple-0.rs
index 9ac55177ffa..9ac55177ffa 100644
--- a/tests/ui/traits/suggest-deferences/multiple-0.rs
+++ b/tests/ui/traits/suggest-dereferences/multiple-0.rs
diff --git a/tests/ui/traits/suggest-deferences/multiple-0.stderr b/tests/ui/traits/suggest-dereferences/multiple-0.stderr
index 6a4d4b8d521..6a4d4b8d521 100644
--- a/tests/ui/traits/suggest-deferences/multiple-0.stderr
+++ b/tests/ui/traits/suggest-dereferences/multiple-0.stderr
diff --git a/tests/ui/traits/suggest-deferences/multiple-1.rs b/tests/ui/traits/suggest-dereferences/multiple-1.rs
index 91c6c7924a4..91c6c7924a4 100644
--- a/tests/ui/traits/suggest-deferences/multiple-1.rs
+++ b/tests/ui/traits/suggest-dereferences/multiple-1.rs
diff --git a/tests/ui/traits/suggest-deferences/multiple-1.stderr b/tests/ui/traits/suggest-dereferences/multiple-1.stderr
index 6e12321c233..6e12321c233 100644
--- a/tests/ui/traits/suggest-deferences/multiple-1.stderr
+++ b/tests/ui/traits/suggest-dereferences/multiple-1.stderr
diff --git a/tests/ui/traits/suggest-deferences/root-obligation.fixed b/tests/ui/traits/suggest-dereferences/root-obligation.fixed
index 7a8433f9057..7a8433f9057 100644
--- a/tests/ui/traits/suggest-deferences/root-obligation.fixed
+++ b/tests/ui/traits/suggest-dereferences/root-obligation.fixed
diff --git a/tests/ui/traits/suggest-deferences/root-obligation.rs b/tests/ui/traits/suggest-dereferences/root-obligation.rs
index 51bac2107e3..51bac2107e3 100644
--- a/tests/ui/traits/suggest-deferences/root-obligation.rs
+++ b/tests/ui/traits/suggest-dereferences/root-obligation.rs
diff --git a/tests/ui/traits/suggest-deferences/root-obligation.stderr b/tests/ui/traits/suggest-dereferences/root-obligation.stderr
index 1363fb8c47a..1363fb8c47a 100644
--- a/tests/ui/traits/suggest-deferences/root-obligation.stderr
+++ b/tests/ui/traits/suggest-dereferences/root-obligation.stderr
diff --git a/tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.fixed b/tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.fixed
index ea3d1bf853a..ea3d1bf853a 100644
--- a/tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.fixed
+++ b/tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.fixed
diff --git a/tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.rs b/tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.rs
index 9eda68027b2..9eda68027b2 100644
--- a/tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.rs
+++ b/tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.rs
diff --git a/tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.stderr b/tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.stderr
index ede31a2c7bc..ede31a2c7bc 100644
--- a/tests/ui/traits/suggest-deferences/suggest-dereferencing-receiver-argument.stderr
+++ b/tests/ui/traits/suggest-dereferences/suggest-dereferencing-receiver-argument.stderr
diff --git a/tests/ui/traits/vtable-res-trait-param.stderr b/tests/ui/traits/vtable-res-trait-param.stderr
index 2b3e3de9b1a..4cfceefb24c 100644
--- a/tests/ui/traits/vtable-res-trait-param.stderr
+++ b/tests/ui/traits/vtable-res-trait-param.stderr
@@ -6,6 +6,11 @@ LL |     b.gimme_an_a(y)
    |       |
    |       required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/vtable-res-trait-param.rs:1:1
+   |
+LL | trait TraitA {
+   | ^^^^^^^^^^^^
 note: required by a bound in `TraitB::gimme_an_a`
   --> $DIR/vtable-res-trait-param.rs:6:21
    |
diff --git a/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.rs b/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.rs
index 546fcbaa3de..b6129163333 100644
--- a/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.rs
+++ b/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.rs
@@ -1,3 +1,5 @@
+// check-pass
+
 //! If visibility is assumed, a transmutation should be accepted even if the
 //! destination type contains an unreachable field (e.g., a public field with a
 //! private type). (This rule is distinct from type privacy, which still may
@@ -29,7 +31,7 @@ mod dst {
     #[repr(C)] pub(self) struct Zst; // <- unreachable type
 
     #[repr(C)] pub(in super) struct Dst {
-        pub(in super) field: Zst, //~ ERROR private type
+        pub(in super) field: Zst, //~ WARNING type `dst::Zst` is more private than the item `Dst::field`
     }
 }
 
diff --git a/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.stderr b/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.stderr
index be83b7ce33f..80099388d63 100644
--- a/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.stderr
+++ b/tests/ui/transmutability/visibility/assume/should_accept_if_dst_has_unreachable_field.stderr
@@ -1,12 +1,15 @@
-error[E0446]: private type `dst::Zst` in public interface
-  --> $DIR/should_accept_if_dst_has_unreachable_field.rs:32:9
+warning: type `dst::Zst` is more private than the item `Dst::field`
+  --> $DIR/should_accept_if_dst_has_unreachable_field.rs:34:9
    |
-LL |     #[repr(C)] pub(self) struct Zst; // <- unreachable type
-   |                -------------------- `dst::Zst` declared as private
-...
 LL |         pub(in super) field: Zst,
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^ field `Dst::field` is reachable at visibility `pub(crate)`
+   |
+note: but type `dst::Zst` is only usable at visibility `pub(self)`
+  --> $DIR/should_accept_if_dst_has_unreachable_field.rs:31:16
+   |
+LL |     #[repr(C)] pub(self) struct Zst; // <- unreachable type
+   |                ^^^^^^^^^^^^^^^^^^^^
+   = note: `#[warn(private_interfaces)]` on by default
 
-error: aborting due to previous error
+warning: 1 warning emitted
 
-For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.rs b/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.rs
index 9c8345a8e91..e7742058c57 100644
--- a/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.rs
+++ b/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.rs
@@ -1,3 +1,5 @@
+// check-pass
+
 //! The presence of an unreachable field in the source type (e.g., a public
 //! field with a private type does not affect transmutability. (This rule is
 //! distinct from type privacy, which still may forbid naming such types.)
@@ -19,7 +21,7 @@ mod src {
     #[repr(C)] pub(self) struct Zst; // <- unreachable type
 
     #[repr(C)] pub(in super) struct Src {
-        pub(in super) field: Zst, //~ ERROR private type
+        pub(in super) field: Zst, //~ WARNING type `src::Zst` is more private than the item `Src::field`
     }
 }
 
diff --git a/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.stderr b/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.stderr
index 39b73302e36..55fb3392305 100644
--- a/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.stderr
+++ b/tests/ui/transmutability/visibility/should_accept_if_src_has_unreachable_field.stderr
@@ -1,12 +1,15 @@
-error[E0446]: private type `src::Zst` in public interface
-  --> $DIR/should_accept_if_src_has_unreachable_field.rs:22:9
+warning: type `src::Zst` is more private than the item `Src::field`
+  --> $DIR/should_accept_if_src_has_unreachable_field.rs:24:9
    |
-LL |     #[repr(C)] pub(self) struct Zst; // <- unreachable type
-   |                -------------------- `src::Zst` declared as private
-...
 LL |         pub(in super) field: Zst,
-   |         ^^^^^^^^^^^^^^^^^^^^^^^^ can't leak private type
+   |         ^^^^^^^^^^^^^^^^^^^^^^^^ field `Src::field` is reachable at visibility `pub(crate)`
+   |
+note: but type `src::Zst` is only usable at visibility `pub(self)`
+  --> $DIR/should_accept_if_src_has_unreachable_field.rs:21:16
+   |
+LL |     #[repr(C)] pub(self) struct Zst; // <- unreachable type
+   |                ^^^^^^^^^^^^^^^^^^^^
+   = note: `#[warn(private_interfaces)]` on by default
 
-error: aborting due to previous error
+warning: 1 warning emitted
 
-For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/transmute/issue-115402-overflow-size.rs b/tests/ui/transmute/issue-115402-overflow-size.rs
new file mode 100644
index 00000000000..91168041ed6
--- /dev/null
+++ b/tests/ui/transmute/issue-115402-overflow-size.rs
@@ -0,0 +1,27 @@
+#![crate_type = "lib"]
+#![feature(transmutability)]
+mod assert {
+    use std::mem::BikeshedIntrinsicFrom;
+    struct Context;
+
+    pub fn is_maybe_transmutable<Src, Dst>()
+    where
+        Dst: BikeshedIntrinsicFrom<Src, Context>,
+    {
+    }
+}
+
+fn main() {
+    pub union Uninit {
+        a: [u8; usize::MAX],
+    }
+
+    #[repr(C)]
+    struct ExplicitlyPadded(Uninit);
+
+    assert::is_maybe_transmutable::<(), ExplicitlyPadded>();
+    //~^ ERROR `()` cannot be safely transmuted into `ExplicitlyPadded`
+
+    assert::is_maybe_transmutable::<ExplicitlyPadded, ()>();
+    //~^ ERROR `ExplicitlyPadded` cannot be safely transmuted into `()`
+}
diff --git a/tests/ui/transmute/issue-115402-overflow-size.stderr b/tests/ui/transmute/issue-115402-overflow-size.stderr
new file mode 100644
index 00000000000..08d180f6427
--- /dev/null
+++ b/tests/ui/transmute/issue-115402-overflow-size.stderr
@@ -0,0 +1,33 @@
+error[E0277]: `()` cannot be safely transmuted into `ExplicitlyPadded` in the defining scope of `assert::Context`
+  --> $DIR/issue-115402-overflow-size.rs:22:41
+   |
+LL |     assert::is_maybe_transmutable::<(), ExplicitlyPadded>();
+   |                                         ^^^^^^^^^^^^^^^^ values of the type `ExplicitlyPadded` are too big for the current architecture
+   |
+note: required by a bound in `is_maybe_transmutable`
+  --> $DIR/issue-115402-overflow-size.rs:9:14
+   |
+LL |     pub fn is_maybe_transmutable<Src, Dst>()
+   |            --------------------- required by a bound in this function
+LL |     where
+LL |         Dst: BikeshedIntrinsicFrom<Src, Context>,
+   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_maybe_transmutable`
+
+error[E0277]: `ExplicitlyPadded` cannot be safely transmuted into `()` in the defining scope of `assert::Context`
+  --> $DIR/issue-115402-overflow-size.rs:25:55
+   |
+LL |     assert::is_maybe_transmutable::<ExplicitlyPadded, ()>();
+   |                                                       ^^ values of the type `ExplicitlyPadded` are too big for the current architecture
+   |
+note: required by a bound in `is_maybe_transmutable`
+  --> $DIR/issue-115402-overflow-size.rs:9:14
+   |
+LL |     pub fn is_maybe_transmutable<Src, Dst>()
+   |            --------------------- required by a bound in this function
+LL |     where
+LL |         Dst: BikeshedIntrinsicFrom<Src, Context>,
+   |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_maybe_transmutable`
+
+error: aborting due to 2 previous errors
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/trivial-bounds/trivial-bounds-leak.stderr b/tests/ui/trivial-bounds/trivial-bounds-leak.stderr
index 02c5d5d2484..be472a50769 100644
--- a/tests/ui/trivial-bounds/trivial-bounds-leak.stderr
+++ b/tests/ui/trivial-bounds/trivial-bounds-leak.stderr
@@ -27,6 +27,12 @@ LL |     Foo::test(&4i32);
    |     --------- ^^^^^ the trait `Foo` is not implemented for `i32`
    |     |
    |     required by a bound introduced by this call
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/trivial-bounds-leak.rs:4:1
+   |
+LL | pub trait Foo {
+   | ^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `i32: Foo` is not satisfied
   --> $DIR/trivial-bounds-leak.rs:26:22
@@ -36,6 +42,11 @@ LL |     generic_function(5i32);
    |     |
    |     required by a bound introduced by this call
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/trivial-bounds-leak.rs:4:1
+   |
+LL | pub trait Foo {
+   | ^^^^^^^^^^^^^
 note: required by a bound in `generic_function`
   --> $DIR/trivial-bounds-leak.rs:29:24
    |
diff --git a/tests/ui/issues/issue-32709.rs b/tests/ui/try-trait/issue-32709.rs
index c05bfdc4cfd..c05bfdc4cfd 100644
--- a/tests/ui/issues/issue-32709.rs
+++ b/tests/ui/try-trait/issue-32709.rs
diff --git a/tests/ui/issues/issue-32709.stderr b/tests/ui/try-trait/issue-32709.stderr
index 94e8f9295fd..94e8f9295fd 100644
--- a/tests/ui/issues/issue-32709.stderr
+++ b/tests/ui/try-trait/issue-32709.stderr
diff --git a/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs b/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs
index 5f75fdc716e..4f424b8c665 100644
--- a/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs
+++ b/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.rs
@@ -1,11 +1,7 @@
 #![feature(type_alias_impl_trait)]
 #![allow(dead_code)]
 
-pub trait Captures<'a> {}
-
-impl<'a, T: ?Sized> Captures<'a> for T {}
-
-type OneLifetime<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
+type OneLifetime<'a, 'b> = impl std::fmt::Debug;
 
 fn foo<'a, 'b>(a: &'a u32, b: &'b u32) -> OneLifetime<'a, 'b> {
     a
diff --git a/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.stderr b/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.stderr
index 546598e8a5c..0c50a84e894 100644
--- a/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.stderr
+++ b/tests/ui/type-alias-impl-trait/different_lifetimes_defining_uses.stderr
@@ -1,11 +1,11 @@
 error: concrete type differs from previous defining opaque type use
-  --> $DIR/different_lifetimes_defining_uses.rs:15:5
+  --> $DIR/different_lifetimes_defining_uses.rs:11:5
    |
 LL |     b
    |     ^ expected `&'a u32`, got `&'b u32`
    |
 note: previous use here
-  --> $DIR/different_lifetimes_defining_uses.rs:11:5
+  --> $DIR/different_lifetimes_defining_uses.rs:7:5
    |
 LL |     a
    |     ^
diff --git a/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.rs b/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.rs
index 14ced341854..169d4f8d509 100644
--- a/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.rs
+++ b/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.rs
@@ -2,11 +2,7 @@
 
 fn main() {}
 
-pub trait Captures<'a> {}
-
-impl<'a, T: ?Sized> Captures<'a> for T {}
-
-type Two<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
+type Two<'a, 'b> = impl std::fmt::Debug;
 
 fn one<'a>(t: &'a ()) -> Two<'a, 'a> {
     //~^ ERROR non-defining opaque type use
diff --git a/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.stderr b/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.stderr
index 4da69a705c0..b03bf2466e6 100644
--- a/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.stderr
+++ b/tests/ui/type-alias-impl-trait/generic_duplicate_lifetime_param.stderr
@@ -1,25 +1,25 @@
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_lifetime_param.rs:11:26
+  --> $DIR/generic_duplicate_lifetime_param.rs:7:26
    |
 LL | fn one<'a>(t: &'a ()) -> Two<'a, 'a> {
    |                          ^^^^^^^^^^^ generic argument `'a` used twice
    |
 note: for this opaque type
-  --> $DIR/generic_duplicate_lifetime_param.rs:9:20
+  --> $DIR/generic_duplicate_lifetime_param.rs:5:20
    |
-LL | type Two<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
-   |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL | type Two<'a, 'b> = impl std::fmt::Debug;
+   |                    ^^^^^^^^^^^^^^^^^^^^
 
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_lifetime_param.rs:13:5
+  --> $DIR/generic_duplicate_lifetime_param.rs:9:5
    |
 LL |     t
    |     ^
    |
 note: lifetime used multiple times
-  --> $DIR/generic_duplicate_lifetime_param.rs:9:10
+  --> $DIR/generic_duplicate_lifetime_param.rs:5:10
    |
-LL | type Two<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
+LL | type Two<'a, 'b> = impl std::fmt::Debug;
    |          ^^  ^^
 
 error: aborting due to 2 previous errors
diff --git a/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.rs b/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.rs
index 1e391b55a4f..e3c6f4d874b 100644
--- a/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.rs
+++ b/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.rs
@@ -14,11 +14,7 @@ fn main() {}
 // test that unused generic parameters are ok
 type TwoTys<T, U> = impl Debug;
 
-pub trait Captures<'a> {}
-
-impl<'a, T: ?Sized> Captures<'a> for T {}
-
-type TwoLifetimes<'a, 'b> = impl Debug + Captures<'a> + Captures<'b>;
+type TwoLifetimes<'a, 'b> = impl Debug;
 
 type TwoConsts<const X: usize, const Y: usize> = impl Debug;
 
diff --git a/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.stderr b/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.stderr
index d8330771d30..495308a6cac 100644
--- a/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.stderr
+++ b/tests/ui/type-alias-impl-trait/generic_duplicate_param_use.stderr
@@ -1,5 +1,5 @@
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_param_use.rs:25:30
+  --> $DIR/generic_duplicate_param_use.rs:21:30
    |
 LL | fn one_ty<T: Debug>(t: T) -> TwoTys<T, T> {
    |                              ^^^^^^^^^^^^ generic argument `T` used twice
@@ -11,7 +11,7 @@ LL | type TwoTys<T, U> = impl Debug;
    |                     ^^^^^^^^^^
 
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_param_use.rs:27:5
+  --> $DIR/generic_duplicate_param_use.rs:23:5
    |
 LL |     t
    |     ^
@@ -23,49 +23,49 @@ LL | type TwoTys<T, U> = impl Debug;
    |             ^  ^
 
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_param_use.rs:31:36
+  --> $DIR/generic_duplicate_param_use.rs:27:36
    |
 LL | fn one_lifetime<'a>(t: &'a u32) -> TwoLifetimes<'a, 'a> {
    |                                    ^^^^^^^^^^^^^^^^^^^^ generic argument `'a` used twice
    |
 note: for this opaque type
-  --> $DIR/generic_duplicate_param_use.rs:21:29
+  --> $DIR/generic_duplicate_param_use.rs:17:29
    |
-LL | type TwoLifetimes<'a, 'b> = impl Debug + Captures<'a> + Captures<'b>;
-   |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+LL | type TwoLifetimes<'a, 'b> = impl Debug;
+   |                             ^^^^^^^^^^
 
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_param_use.rs:33:5
+  --> $DIR/generic_duplicate_param_use.rs:29:5
    |
 LL |     t
    |     ^
    |
 note: lifetime used multiple times
-  --> $DIR/generic_duplicate_param_use.rs:21:19
+  --> $DIR/generic_duplicate_param_use.rs:17:19
    |
-LL | type TwoLifetimes<'a, 'b> = impl Debug + Captures<'a> + Captures<'b>;
+LL | type TwoLifetimes<'a, 'b> = impl Debug;
    |                   ^^  ^^
 
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_param_use.rs:37:50
+  --> $DIR/generic_duplicate_param_use.rs:33:50
    |
 LL | fn one_const<const N: usize>(t: *mut [u8; N]) -> TwoConsts<N, N> {
    |                                                  ^^^^^^^^^^^^^^^ generic argument `N` used twice
    |
 note: for this opaque type
-  --> $DIR/generic_duplicate_param_use.rs:23:50
+  --> $DIR/generic_duplicate_param_use.rs:19:50
    |
 LL | type TwoConsts<const X: usize, const Y: usize> = impl Debug;
    |                                                  ^^^^^^^^^^
 
 error: non-defining opaque type use in defining scope
-  --> $DIR/generic_duplicate_param_use.rs:39:5
+  --> $DIR/generic_duplicate_param_use.rs:35:5
    |
 LL |     t
    |     ^
    |
 note: constant used multiple times
-  --> $DIR/generic_duplicate_param_use.rs:23:16
+  --> $DIR/generic_duplicate_param_use.rs:19:16
    |
 LL | type TwoConsts<const X: usize, const Y: usize> = impl Debug;
    |                ^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^
diff --git a/tests/ui/type-alias-impl-trait/generic_lifetime_param.rs b/tests/ui/type-alias-impl-trait/generic_lifetime_param.rs
index 106efefbaf2..e109c38c986 100644
--- a/tests/ui/type-alias-impl-trait/generic_lifetime_param.rs
+++ b/tests/ui/type-alias-impl-trait/generic_lifetime_param.rs
@@ -1,11 +1,10 @@
-// check-pass
+// build-pass (FIXME(62277): could be check-pass?)
 
 #![feature(type_alias_impl_trait)]
 
 fn main() {}
 
-type Region<'a> = impl std::fmt::Debug + 'a;
-
+type Region<'a> = impl std::fmt::Debug;
 
 fn region<'b>(a: &'b ()) -> Region<'b> {
     a
diff --git a/tests/ui/type-alias-impl-trait/implied_lifetime_wf_check3.rs b/tests/ui/type-alias-impl-trait/implied_lifetime_wf_check3.rs
index 6f9434255a8..469a493b0b3 100644
--- a/tests/ui/type-alias-impl-trait/implied_lifetime_wf_check3.rs
+++ b/tests/ui/type-alias-impl-trait/implied_lifetime_wf_check3.rs
@@ -1,7 +1,7 @@
 #![feature(type_alias_impl_trait)]
 
 mod test_lifetime_param {
-    type Ty<'a> = impl Sized + 'a;
+    type Ty<'a> = impl Sized;
     fn defining(a: &str) -> Ty<'_> { a }
     fn assert_static<'a: 'static>() {}
     fn test<'a>() where Ty<'a>: 'static { assert_static::<'a>() }
@@ -9,7 +9,7 @@ mod test_lifetime_param {
 }
 
 mod test_higher_kinded_lifetime_param {
-    type Ty<'a> = impl Sized + 'a;
+    type Ty<'a> = impl Sized;
     fn defining(a: &str) -> Ty<'_> { a }
     fn assert_static<'a: 'static>() {}
     fn test<'a>() where for<'b> Ty<'b>: 'a { assert_static::<'a>() }
diff --git a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds.rs b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds.rs
index 4f99236f4ea..06c119287d7 100644
--- a/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds.rs
+++ b/tests/ui/type-alias-impl-trait/imply_bounds_from_bounds.rs
@@ -1,16 +1,20 @@
 // check-pass
 
-#![feature(impl_trait_in_assoc_type)]
+#![feature(impl_trait_in_assoc_type, type_alias_impl_trait)]
 
-trait Callable {
-    type Output;
-    fn call() -> Self::Output;
-}
+mod foo {
+    pub trait Callable {
+        type Output;
+        fn call() -> Self::Output;
+    }
 
-impl<'a> Callable for &'a () {
-    type Output = impl Sized;
-    fn call() -> Self::Output {}
+    pub type OutputHelper = impl Sized;
+    impl<'a> Callable for &'a () {
+        type Output = OutputHelper;
+        fn call() -> Self::Output {}
+    }
 }
+use foo::*;
 
 fn test<'a>() -> impl Sized {
     <&'a () as Callable>::call()
diff --git a/tests/ui/type-alias-impl-trait/issue-89686.rs b/tests/ui/type-alias-impl-trait/issue-89686.rs
index 058417bdb80..de070fc9deb 100644
--- a/tests/ui/type-alias-impl-trait/issue-89686.rs
+++ b/tests/ui/type-alias-impl-trait/issue-89686.rs
@@ -4,7 +4,7 @@
 
 use std::future::Future;
 
-type G<'a, T> = impl Future<Output = ()> + 'a;
+type G<'a, T> = impl Future<Output = ()>;
 
 trait Trait {
     type F: Future<Output = ()>;
diff --git a/tests/ui/type-alias-impl-trait/issue-89686.stderr b/tests/ui/type-alias-impl-trait/issue-89686.stderr
index 3b95a575ac2..b636ada8b75 100644
--- a/tests/ui/type-alias-impl-trait/issue-89686.stderr
+++ b/tests/ui/type-alias-impl-trait/issue-89686.stderr
@@ -6,7 +6,7 @@ LL |         async move { self.f().await }
    |
 help: consider restricting type parameter `T`
    |
-LL | type G<'a, T: Trait> = impl Future<Output = ()> + 'a;
+LL | type G<'a, T: Trait> = impl Future<Output = ()>;
    |             +++++++
 
 error: aborting due to previous error
diff --git a/tests/ui/type-alias-impl-trait/missing_lifetime_bound.rs b/tests/ui/type-alias-impl-trait/missing_lifetime_bound.rs
index 01d1f5db132..c584a58cb32 100644
--- a/tests/ui/type-alias-impl-trait/missing_lifetime_bound.rs
+++ b/tests/ui/type-alias-impl-trait/missing_lifetime_bound.rs
@@ -1,7 +1,8 @@
 #![feature(type_alias_impl_trait)]
 
-type Opaque<'a, T> = impl Sized;
+type Opaque2<T> = impl Sized;
+type Opaque<'a, T> = Opaque2<T>;
 fn defining<'a, T>(x: &'a i32) -> Opaque<T> { x }
-//~^ ERROR: hidden type for `Opaque<'a, T>` captures lifetime that does not appear in bounds
+//~^ ERROR: hidden type for `Opaque2<T>` captures lifetime that does not appear in bounds
 
 fn main() {}
diff --git a/tests/ui/type-alias-impl-trait/missing_lifetime_bound.stderr b/tests/ui/type-alias-impl-trait/missing_lifetime_bound.stderr
index d666e668d36..6bcae6e5316 100644
--- a/tests/ui/type-alias-impl-trait/missing_lifetime_bound.stderr
+++ b/tests/ui/type-alias-impl-trait/missing_lifetime_bound.stderr
@@ -1,8 +1,9 @@
-error[E0700]: hidden type for `Opaque<'a, T>` captures lifetime that does not appear in bounds
-  --> $DIR/missing_lifetime_bound.rs:4:47
+error[E0700]: hidden type for `Opaque2<T>` captures lifetime that does not appear in bounds
+  --> $DIR/missing_lifetime_bound.rs:5:47
    |
-LL | type Opaque<'a, T> = impl Sized;
-   |                      ---------- opaque type defined here
+LL | type Opaque2<T> = impl Sized;
+   |                   ---------- opaque type defined here
+LL | type Opaque<'a, T> = Opaque2<T>;
 LL | fn defining<'a, T>(x: &'a i32) -> Opaque<T> { x }
    |             --                                ^
    |             |
diff --git a/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs b/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs
index 65eb2952e0f..3f122f10609 100644
--- a/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs
+++ b/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.rs
@@ -1,10 +1,6 @@
 #![feature(type_alias_impl_trait)]
 
-pub trait Captures<'a> {}
-
-impl<'a, T: ?Sized> Captures<'a> for T {}
-
-type Foo<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
+type Foo<'a, 'b> = impl std::fmt::Debug;
 
 fn foo<'x, 'y>(i: &'x i32, j: &'y i32) -> (Foo<'x, 'y>, Foo<'y, 'x>) {
     (i, i) //~ ERROR concrete type differs from previous
diff --git a/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr b/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr
index d7676b8e9b1..81e603e2355 100644
--- a/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr
+++ b/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-lifetimes.stderr
@@ -1,5 +1,5 @@
 error: concrete type differs from previous defining opaque type use
-  --> $DIR/multiple-def-uses-in-one-fn-lifetimes.rs:10:5
+  --> $DIR/multiple-def-uses-in-one-fn-lifetimes.rs:6:5
    |
 LL |     (i, i)
    |     ^^^^^^
diff --git a/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-pass.rs b/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-pass.rs
index 21fca047a3c..83fd9a1da45 100644
--- a/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-pass.rs
+++ b/tests/ui/type-alias-impl-trait/multiple-def-uses-in-one-fn-pass.rs
@@ -7,11 +7,7 @@ fn f<A: ToString + Clone, B: ToString + Clone>(a: A, b: B) -> (X<A, B>, X<A, B>)
     (a.clone(), a)
 }
 
-pub trait Captures<'a> {}
-
-impl<'a, T: ?Sized> Captures<'a> for T {}
-
-type Foo<'a, 'b> = impl std::fmt::Debug + Captures<'a> + Captures<'b>;
+type Foo<'a, 'b> = impl std::fmt::Debug;
 
 fn foo<'x, 'y>(i: &'x i32, j: &'y i32) -> (Foo<'x, 'y>, Foo<'y, 'x>) {
     (i, j)
diff --git a/tests/ui/type-alias-impl-trait/nested-tait-hrtb.rs b/tests/ui/type-alias-impl-trait/nested-tait-hrtb.rs
index 4a9631a7208..ba705d6f85a 100644
--- a/tests/ui/type-alias-impl-trait/nested-tait-hrtb.rs
+++ b/tests/ui/type-alias-impl-trait/nested-tait-hrtb.rs
@@ -8,7 +8,7 @@ fn without_lt() -> impl for<'a> Trait<'a, Assoc = WithoutLt> {}
 //~^ ERROR captures lifetime that does not appear in bounds
 
 type WithLt<'a> = impl Sized + 'a;
-//~^ ERROR concrete type differs from previous defining opaque type use
+
 fn with_lt() -> impl for<'a> Trait<'a, Assoc = WithLt<'a>> {}
 //~^ ERROR expected generic lifetime parameter, found `'a`
 
diff --git a/tests/ui/type-alias-impl-trait/nested-tait-hrtb.stderr b/tests/ui/type-alias-impl-trait/nested-tait-hrtb.stderr
index 9a783a6d92a..f208730552d 100644
--- a/tests/ui/type-alias-impl-trait/nested-tait-hrtb.stderr
+++ b/tests/ui/type-alias-impl-trait/nested-tait-hrtb.stderr
@@ -17,19 +17,7 @@ LL |
 LL | fn with_lt() -> impl for<'a> Trait<'a, Assoc = WithLt<'a>> {}
    |                                                            ^^
 
-error: concrete type differs from previous defining opaque type use
-  --> $DIR/nested-tait-hrtb.rs:10:19
-   |
-LL | type WithLt<'a> = impl Sized + 'a;
-   |                   ^^^^^^^^^^^^^^^ expected `&'a str`, got `{type error}`
-   |
-note: previous use here
-  --> $DIR/nested-tait-hrtb.rs:12:17
-   |
-LL | fn with_lt() -> impl for<'a> Trait<'a, Assoc = WithLt<'a>> {}
-   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
-
-error: aborting due to 3 previous errors
+error: aborting due to 2 previous errors
 
 Some errors have detailed explanations: E0700, E0792.
 For more information about an error, try `rustc --explain E0700`.
diff --git a/tests/ui/type-alias-impl-trait/privacy.rs b/tests/ui/type-alias-impl-trait/privacy.rs
index aa092f6f8ec..3efbfaf0916 100644
--- a/tests/ui/type-alias-impl-trait/privacy.rs
+++ b/tests/ui/type-alias-impl-trait/privacy.rs
@@ -1,8 +1,10 @@
+// check-pass
+
 #![feature(type_alias_impl_trait)]
 
 type Foo = (impl Sized, u8);
 pub fn foo() -> Foo {
-    //~^ ERROR private type alias `Foo` in public interface
+    //~^ WARNING type alias `Foo` is more private than the item `foo`
     (42, 42)
 }
 fn main() {}
diff --git a/tests/ui/type-alias-impl-trait/privacy.stderr b/tests/ui/type-alias-impl-trait/privacy.stderr
index e8c6039cdc8..50870905c30 100644
--- a/tests/ui/type-alias-impl-trait/privacy.stderr
+++ b/tests/ui/type-alias-impl-trait/privacy.stderr
@@ -1,11 +1,15 @@
-error[E0446]: private type alias `Foo` in public interface
-  --> $DIR/privacy.rs:4:1
+warning: type alias `Foo` is more private than the item `foo`
+  --> $DIR/privacy.rs:6:1
    |
-LL | type Foo = (impl Sized, u8);
-   | -------- `Foo` declared as private
 LL | pub fn foo() -> Foo {
-   | ^^^^^^^^^^^^^^^^^^^ can't leak private type alias
+   | ^^^^^^^^^^^^^^^^^^^ function `foo` is reachable at visibility `pub`
+   |
+note: but type alias `Foo` is only usable at visibility `pub(crate)`
+  --> $DIR/privacy.rs:5:1
+   |
+LL | type Foo = (impl Sized, u8);
+   | ^^^^^^^^
+   = note: `#[warn(private_interfaces)]` on by default
 
-error: aborting due to previous error
+warning: 1 warning emitted
 
-For more information about this error, try `rustc --explain E0446`.
diff --git a/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs b/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs
new file mode 100644
index 00000000000..eefe333da45
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/rpit_tait_equality_in_canonical_query.rs
@@ -0,0 +1,25 @@
+//! This tries to prove the APIT's bounds in a canonical query,
+//! which doesn't know anything about the defining scope of either
+//! opaque type and thus makes a random choice as to which opaque type
+//! becomes the hidden type of the other. When we leave the canonical
+//! query, we attempt to actually check the defining anchor, but now we
+//! have a situation where the RPIT gets constrained outside its anchor.
+
+// revisions: current next
+//[next] compile-flags: -Ztrait-solver=next
+// check-pass
+
+#![feature(type_alias_impl_trait)]
+
+type Opaque = impl Sized;
+
+fn get_rpit() -> impl Clone {}
+
+fn query(_: impl FnOnce() -> Opaque) {}
+
+fn test() -> Opaque {
+    query(get_rpit);
+    get_rpit()
+}
+
+fn main() {}
diff --git a/tests/ui/type-alias-impl-trait/self_implication.rs b/tests/ui/type-alias-impl-trait/self_implication.rs
index 4e805ee308f..65659a0f3b1 100644
--- a/tests/ui/type-alias-impl-trait/self_implication.rs
+++ b/tests/ui/type-alias-impl-trait/self_implication.rs
@@ -22,9 +22,9 @@ fn bar() {
     }
 
     // desugared
-    type FooX<'a> = impl Sized;
+    type FooX = impl Sized;
     impl<'a> Foo<'a> {
-        fn foo(&self) -> FooX<'a> {}
+        fn foo(&self) -> FooX {}
     }
 
     // use site
diff --git a/tests/ui/type-alias-impl-trait/variance.rs b/tests/ui/type-alias-impl-trait/variance.rs
new file mode 100644
index 00000000000..eba4816003b
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/variance.rs
@@ -0,0 +1,50 @@
+#![feature(rustc_attrs, type_alias_impl_trait, impl_trait_in_assoc_type)]
+#![allow(internal_features)]
+#![rustc_variance_of_opaques]
+
+trait Captures<'a> {}
+impl<T> Captures<'_> for T {}
+
+type NotCapturedEarly<'a> = impl Sized; //~ [o]
+
+type CapturedEarly<'a> = impl Sized + Captures<'a>; //~ [o]
+
+type NotCapturedLate<'a> = dyn for<'b> Iterator<Item = impl Sized>; //~ [o]
+
+type CapturedLate<'a> = dyn for<'b> Iterator<Item = impl Sized + Captures<'b>>; //~ [o]
+
+type Captured<'a> = dyn for<'b> Iterator<Item = impl Sized + Captures<'a> + Captures<'b>>; //~ [o]
+
+type Bar<'a, 'b: 'b, T> = impl Sized; //~ ERROR [o, o, o]
+
+trait Foo<'i> {
+    type ImplicitCapturedEarly<'a>;
+
+    type ExplicitCaptureEarly<'a>;
+
+    type ImplicitCaptureLate<'a>;
+
+    type ExplicitCaptureLate<'a>;
+}
+
+impl<'i> Foo<'i> for &'i () {
+    type ImplicitCapturedEarly<'a> = impl Sized; //~ [o, o]
+
+    type ExplicitCaptureEarly<'a> = impl Sized + Captures<'i>; //~ [o, o]
+
+    type ImplicitCaptureLate<'a> = impl Sized; //~ [o, o]
+
+    type ExplicitCaptureLate<'a> = impl Sized + Captures<'a>; //~ [o, o]
+}
+
+impl<'i> Foo<'i> for () {
+    type ImplicitCapturedEarly<'a> = impl Sized; //~ [o, o]
+
+    type ExplicitCaptureEarly<'a> = impl Sized + Captures<'i>; //~ [o, o]
+
+    type ImplicitCaptureLate<'a> = impl Sized; //~ [o, o]
+
+    type ExplicitCaptureLate<'a> = impl Sized + Captures<'a>; //~ [o, o]
+}
+
+fn main() {}
diff --git a/tests/ui/type-alias-impl-trait/variance.stderr b/tests/ui/type-alias-impl-trait/variance.stderr
new file mode 100644
index 00000000000..f73cf617a4c
--- /dev/null
+++ b/tests/ui/type-alias-impl-trait/variance.stderr
@@ -0,0 +1,86 @@
+error: [o]
+  --> $DIR/variance.rs:8:29
+   |
+LL | type NotCapturedEarly<'a> = impl Sized;
+   |                             ^^^^^^^^^^
+
+error: [o]
+  --> $DIR/variance.rs:10:26
+   |
+LL | type CapturedEarly<'a> = impl Sized + Captures<'a>;
+   |                          ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: [o]
+  --> $DIR/variance.rs:12:56
+   |
+LL | type NotCapturedLate<'a> = dyn for<'b> Iterator<Item = impl Sized>;
+   |                                                        ^^^^^^^^^^
+
+error: [o]
+  --> $DIR/variance.rs:14:53
+   |
+LL | type CapturedLate<'a> = dyn for<'b> Iterator<Item = impl Sized + Captures<'b>>;
+   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: [o]
+  --> $DIR/variance.rs:16:49
+   |
+LL | type Captured<'a> = dyn for<'b> Iterator<Item = impl Sized + Captures<'a> + Captures<'b>>;
+   |                                                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: [o, o, o]
+  --> $DIR/variance.rs:18:27
+   |
+LL | type Bar<'a, 'b: 'b, T> = impl Sized;
+   |                           ^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:31:38
+   |
+LL |     type ImplicitCapturedEarly<'a> = impl Sized;
+   |                                      ^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:33:37
+   |
+LL |     type ExplicitCaptureEarly<'a> = impl Sized + Captures<'i>;
+   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:35:36
+   |
+LL |     type ImplicitCaptureLate<'a> = impl Sized;
+   |                                    ^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:37:36
+   |
+LL |     type ExplicitCaptureLate<'a> = impl Sized + Captures<'a>;
+   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:41:38
+   |
+LL |     type ImplicitCapturedEarly<'a> = impl Sized;
+   |                                      ^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:43:37
+   |
+LL |     type ExplicitCaptureEarly<'a> = impl Sized + Captures<'i>;
+   |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:45:36
+   |
+LL |     type ImplicitCaptureLate<'a> = impl Sized;
+   |                                    ^^^^^^^^^^
+
+error: [o, o]
+  --> $DIR/variance.rs:47:36
+   |
+LL |     type ExplicitCaptureLate<'a> = impl Sized + Captures<'a>;
+   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to 14 previous errors
+
diff --git a/tests/ui/type/type-arg-out-of-scope.rs b/tests/ui/type/type-arg-out-of-scope.rs
index 02aad007707..c36f9904e5d 100644
--- a/tests/ui/type/type-arg-out-of-scope.rs
+++ b/tests/ui/type/type-arg-out-of-scope.rs
@@ -1,4 +1,4 @@
-// error-pattern:can't use generic parameters from outer function
+// error-pattern:can't use generic parameters from outer item
 fn foo<T>(x: T) {
     fn bar(f: Box<dyn FnMut(T) -> T>) { }
 }
diff --git a/tests/ui/type/type-arg-out-of-scope.stderr b/tests/ui/type/type-arg-out-of-scope.stderr
index 7f18b4510f4..8665001e243 100644
--- a/tests/ui/type/type-arg-out-of-scope.stderr
+++ b/tests/ui/type/type-arg-out-of-scope.stderr
@@ -1,22 +1,22 @@
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/type-arg-out-of-scope.rs:3:29
    |
 LL | fn foo<T>(x: T) {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 LL |     fn bar(f: Box<dyn FnMut(T) -> T>) { }
-   |           -                 ^ use of generic parameter from outer function
+   |           -                 ^ use of generic parameter from outer item
    |           |
-   |           help: try using a local generic parameter instead: `<T>`
+   |           help: try introducing a local generic parameter here: `<T>`
 
-error[E0401]: can't use generic parameters from outer function
+error[E0401]: can't use generic parameters from outer item
   --> $DIR/type-arg-out-of-scope.rs:3:35
    |
 LL | fn foo<T>(x: T) {
-   |        - type parameter from outer function
+   |        - type parameter from outer item
 LL |     fn bar(f: Box<dyn FnMut(T) -> T>) { }
-   |           -                       ^ use of generic parameter from outer function
+   |           -                       ^ use of generic parameter from outer item
    |           |
-   |           help: try using a local generic parameter instead: `<T>`
+   |           help: try introducing a local generic parameter here: `<T>`
 
 error: aborting due to 2 previous errors
 
diff --git a/tests/ui/typeck/issue-114918/const-in-fn-return-type.rs b/tests/ui/typeck/issue-114918/const-in-fn-return-type.rs
new file mode 100644
index 00000000000..d939633290e
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-fn-return-type.rs
@@ -0,0 +1,10 @@
+// Regression test for #114918
+// Test that a const generic enclosed in a block within a return type
+// produces a type mismatch error instead of triggering a const eval cycle
+
+#[allow(unused_braces)]
+fn func() -> [u8; { () } ] { //~ ERROR mismatched types
+    loop {}
+}
+
+fn main() {}
diff --git a/tests/ui/typeck/issue-114918/const-in-fn-return-type.stderr b/tests/ui/typeck/issue-114918/const-in-fn-return-type.stderr
new file mode 100644
index 00000000000..88ed96e148c
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-fn-return-type.stderr
@@ -0,0 +1,9 @@
+error[E0308]: mismatched types
+  --> $DIR/const-in-fn-return-type.rs:6:21
+   |
+LL | fn func() -> [u8; { () } ] {
+   |                     ^^ expected `usize`, found `()`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.rs b/tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.rs
new file mode 100644
index 00000000000..a1b9a7eba4d
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.rs
@@ -0,0 +1,20 @@
+// Regression test for #114918
+// Test that a const generic enclosed in a block within the return type
+// of an impl fn produces a type mismatch error instead of triggering
+// a const eval cycle
+
+
+trait Trait {
+    fn func<const N: u32>() -> [ (); N ];
+}
+
+struct S {}
+
+#[allow(unused_braces)]
+impl Trait for S {
+    fn func<const N: u32>() -> [ (); { () }] { //~ ERROR mismatched types
+        N
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.stderr b/tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.stderr
new file mode 100644
index 00000000000..9843651b1e6
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-impl-fn-return-type.stderr
@@ -0,0 +1,9 @@
+error[E0308]: mismatched types
+  --> $DIR/const-in-impl-fn-return-type.rs:15:40
+   |
+LL |     fn func<const N: u32>() -> [ (); { () }] {
+   |                                        ^^ expected `usize`, found `()`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/typeck/issue-114918/const-in-struct-type-arg.rs b/tests/ui/typeck/issue-114918/const-in-struct-type-arg.rs
new file mode 100644
index 00000000000..9eee4ab3d4c
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-struct-type-arg.rs
@@ -0,0 +1,12 @@
+// Regression test for #114918
+// Test that a const generic enclosed in a block in a struct's type arg
+// produces a type mismatch error instead of triggering a const eval cycle
+
+#[allow(unused_braces)]
+struct S<const N: usize> {
+        arr: [u8; N]
+}
+
+fn main() {
+    let s = S::<{ () }> { arr: [5, 6, 7]}; //~ ERROR mismatched types
+}
diff --git a/tests/ui/typeck/issue-114918/const-in-struct-type-arg.stderr b/tests/ui/typeck/issue-114918/const-in-struct-type-arg.stderr
new file mode 100644
index 00000000000..3307e76d957
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-struct-type-arg.stderr
@@ -0,0 +1,9 @@
+error[E0308]: mismatched types
+  --> $DIR/const-in-struct-type-arg.rs:11:19
+   |
+LL |     let s = S::<{ () }> { arr: [5, 6, 7]};
+   |                   ^^ expected `usize`, found `()`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.rs b/tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.rs
new file mode 100644
index 00000000000..8e2eec34911
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.rs
@@ -0,0 +1,13 @@
+// Regression test for #114918
+// Test that a const generic enclosed in a block within the return type
+// of a trait method produces a type mismatch error instead of triggering
+// a const eval cycle
+
+#[allow(unused_braces)]
+trait Trait {
+    fn func<const N: u32>() -> [ (); { () }] { //~ ERROR mismatched types
+        N
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.stderr b/tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.stderr
new file mode 100644
index 00000000000..6bc0de77a62
--- /dev/null
+++ b/tests/ui/typeck/issue-114918/const-in-trait-fn-return-type.stderr
@@ -0,0 +1,9 @@
+error[E0308]: mismatched types
+  --> $DIR/const-in-trait-fn-return-type.rs:8:40
+   |
+LL |     fn func<const N: u32>() -> [ (); { () }] {
+   |                                        ^^ expected `usize`, found `()`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/union/projection-as-union-type-error-2.stderr b/tests/ui/union/projection-as-union-type-error-2.stderr
index bab226f271d..21f4ea103ad 100644
--- a/tests/ui/union/projection-as-union-type-error-2.stderr
+++ b/tests/ui/union/projection-as-union-type-error-2.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `u8: NotImplemented` is not satisfied
 LL |     a: <Foo as Identity>::Identity,
    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `NotImplemented` is not implemented for `u8`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/projection-as-union-type-error-2.rs:9:1
+   |
+LL | trait NotImplemented {}
+   | ^^^^^^^^^^^^^^^^^^^^
 note: required for `u8` to implement `Identity`
   --> $DIR/projection-as-union-type-error-2.rs:11:25
    |
diff --git a/tests/ui/union/projection-as-union-type-error.stderr b/tests/ui/union/projection-as-union-type-error.stderr
index e4fbe9603ad..2b0241caf98 100644
--- a/tests/ui/union/projection-as-union-type-error.stderr
+++ b/tests/ui/union/projection-as-union-type-error.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `u8: Identity` is not satisfied
    |
 LL |     a:  <Foo as Identity>::Identity,
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Identity` is not implemented for `u8`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/projection-as-union-type-error.rs:6:1
+   |
+LL | pub trait Identity {
+   | ^^^^^^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.rs b/tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.rs
new file mode 100644
index 00000000000..a192f3445f7
--- /dev/null
+++ b/tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.rs
@@ -0,0 +1,17 @@
+// edition: 2024
+// compile-flags: -Zunstable-options
+// check-pass
+
+#![crate_type = "lib"]
+
+#![deny(unused_unsafe)]
+
+unsafe fn unsf() {}
+
+unsafe fn foo() {
+    unsf();
+    //~^ WARN call to unsafe function is unsafe and requires unsafe block
+
+    // no unused_unsafe
+    unsafe { unsf(); }
+}
diff --git a/tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.stderr b/tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.stderr
new file mode 100644
index 00000000000..fbc621f4d0e
--- /dev/null
+++ b/tests/ui/unsafe/edition-2024-unsafe_op_in_unsafe_fn.stderr
@@ -0,0 +1,16 @@
+warning: call to unsafe function is unsafe and requires unsafe block (error E0133)
+  --> $DIR/edition-2024-unsafe_op_in_unsafe_fn.rs:12:5
+   |
+LL |     unsf();
+   |     ^^^^^^ call to unsafe function
+   |
+   = note: consult the function's documentation for information on how to avoid undefined behavior
+note: an unsafe function restricts its caller, but its body is safe by default
+  --> $DIR/edition-2024-unsafe_op_in_unsafe_fn.rs:11:1
+   |
+LL | unsafe fn foo() {
+   | ^^^^^^^^^^^^^^^
+   = note: `#[warn(unsafe_op_in_unsafe_fn)]` on by default
+
+warning: 1 warning emitted
+
diff --git a/tests/ui/unsafe/initializing-ranged-via-ctor.rs b/tests/ui/unsafe/initializing-ranged-via-ctor.rs
new file mode 100644
index 00000000000..ca44fa7e4e7
--- /dev/null
+++ b/tests/ui/unsafe/initializing-ranged-via-ctor.rs
@@ -0,0 +1,11 @@
+#![feature(rustc_attrs)]
+#![allow(internal_features)]
+
+#[derive(Debug)]
+#[rustc_layout_scalar_valid_range_start(2)]
+struct NonZeroAndOneU8(u8);
+
+fn main() {
+    println!("{:?}", Some(1).map(NonZeroAndOneU8).unwrap());
+    //~^ ERROR found `unsafe fn(u8) -> NonZeroAndOneU8 {NonZeroAndOneU8}`
+}
diff --git a/tests/ui/unsafe/initializing-ranged-via-ctor.stderr b/tests/ui/unsafe/initializing-ranged-via-ctor.stderr
new file mode 100644
index 00000000000..d34554c6641
--- /dev/null
+++ b/tests/ui/unsafe/initializing-ranged-via-ctor.stderr
@@ -0,0 +1,16 @@
+error[E0277]: expected a `FnOnce<({integer},)>` closure, found `unsafe fn(u8) -> NonZeroAndOneU8 {NonZeroAndOneU8}`
+  --> $DIR/initializing-ranged-via-ctor.rs:9:34
+   |
+LL |     println!("{:?}", Some(1).map(NonZeroAndOneU8).unwrap());
+   |                              --- ^^^^^^^^^^^^^^^ call the function in a closure: `|| unsafe { /* code */ }`
+   |                              |
+   |                              required by a bound introduced by this call
+   |
+   = help: the trait `FnOnce<({integer},)>` is not implemented for fn item `unsafe fn(u8) -> NonZeroAndOneU8 {NonZeroAndOneU8}`
+   = note: unsafe function cannot be called generically without an unsafe block
+note: required by a bound in `Option::<T>::map`
+  --> $SRC_DIR/core/src/option.rs:LL:COL
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.
diff --git a/tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.rs b/tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.rs
new file mode 100644
index 00000000000..68559338d49
--- /dev/null
+++ b/tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.rs
@@ -0,0 +1,16 @@
+// Regression test for #115348.
+
+unsafe fn uwu() {}
+
+// Tests that the false-positive warning "unnecessary `unsafe` block"
+// should not be reported, when the error "non-exhaustive patterns"
+// appears.
+
+fn foo(x: Option<u32>) {
+    match x {
+        //~^ ERROR non-exhaustive patterns: `None` not covered
+        Some(_) => unsafe { uwu() },
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.stderr b/tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.stderr
new file mode 100644
index 00000000000..7384899b978
--- /dev/null
+++ b/tests/ui/unsafe/issue-115348-false-positive-warning-of-unnecessary-unsafe.stderr
@@ -0,0 +1,21 @@
+error[E0004]: non-exhaustive patterns: `None` not covered
+  --> $DIR/issue-115348-false-positive-warning-of-unnecessary-unsafe.rs:10:11
+   |
+LL |     match x {
+   |           ^ pattern `None` not covered
+   |
+note: `Option<u32>` defined here
+  --> $SRC_DIR/core/src/option.rs:LL:COL
+  ::: $SRC_DIR/core/src/option.rs:LL:COL
+   |
+   = note: not covered
+   = note: the matched value is of type `Option<u32>`
+help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern or an explicit pattern as shown
+   |
+LL ~         Some(_) => unsafe { uwu() },
+LL ~         None => todo!(),
+   |
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0004`.
diff --git a/tests/ui/unsafe/ranged-ctor-as-fn-ptr.rs b/tests/ui/unsafe/ranged-ctor-as-fn-ptr.rs
new file mode 100644
index 00000000000..a91e579510d
--- /dev/null
+++ b/tests/ui/unsafe/ranged-ctor-as-fn-ptr.rs
@@ -0,0 +1,10 @@
+#![feature(rustc_attrs)]
+
+#[derive(Debug)]
+#[rustc_layout_scalar_valid_range_start(2)]
+struct NonZeroAndOneU8(u8);
+
+fn main() {
+    let x: fn(u8) -> NonZeroAndOneU8 = NonZeroAndOneU8;
+    //~^ ERROR mismatched types
+}
diff --git a/tests/ui/unsafe/ranged-ctor-as-fn-ptr.stderr b/tests/ui/unsafe/ranged-ctor-as-fn-ptr.stderr
new file mode 100644
index 00000000000..660c4070451
--- /dev/null
+++ b/tests/ui/unsafe/ranged-ctor-as-fn-ptr.stderr
@@ -0,0 +1,15 @@
+error[E0308]: mismatched types
+  --> $DIR/ranged-ctor-as-fn-ptr.rs:8:40
+   |
+LL |     let x: fn(u8) -> NonZeroAndOneU8 = NonZeroAndOneU8;
+   |            -------------------------   ^^^^^^^^^^^^^^^ expected normal fn, found unsafe fn
+   |            |
+   |            expected due to this
+   |
+   = note:      expected fn pointer `fn(_) -> NonZeroAndOneU8`
+           found struct constructor `unsafe fn(_) -> NonZeroAndOneU8 {NonZeroAndOneU8}`
+   = note: unsafe functions cannot be coerced into safe function pointers
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.
diff --git a/tests/ui/unsized/issue-115203.rs b/tests/ui/unsized/issue-115203.rs
new file mode 100644
index 00000000000..5fe7bd64288
--- /dev/null
+++ b/tests/ui/unsized/issue-115203.rs
@@ -0,0 +1,11 @@
+// compile-flags: --emit link
+
+fn main() {
+    let a: [i32; 0] = [];
+    match [a[..]] {
+        //~^ ERROR cannot move a value of type `[i32]
+        //~| ERROR cannot move out of type `[i32]`, a non-copy slice
+        [[]] => (),
+        _ => (),
+    }
+}
diff --git a/tests/ui/unsized/issue-115203.stderr b/tests/ui/unsized/issue-115203.stderr
new file mode 100644
index 00000000000..3ee734988c5
--- /dev/null
+++ b/tests/ui/unsized/issue-115203.stderr
@@ -0,0 +1,19 @@
+error[E0161]: cannot move a value of type `[i32]`
+  --> $DIR/issue-115203.rs:5:12
+   |
+LL |     match [a[..]] {
+   |            ^^^^^ the size of `[i32]` cannot be statically determined
+
+error[E0508]: cannot move out of type `[i32]`, a non-copy slice
+  --> $DIR/issue-115203.rs:5:12
+   |
+LL |     match [a[..]] {
+   |            ^^^^^
+   |            |
+   |            cannot move out of here
+   |            move occurs because value has type `[i32]`, which does not implement the `Copy` trait
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0161, E0508.
+For more information about an error, try `rustc --explain E0161`.
diff --git a/tests/ui/unsized/issue-115809.rs b/tests/ui/unsized/issue-115809.rs
new file mode 100644
index 00000000000..ff25365ea50
--- /dev/null
+++ b/tests/ui/unsized/issue-115809.rs
@@ -0,0 +1,13 @@
+// compile-flags: --emit=link -Zmir-opt-level=2 -Zpolymorphize=on
+
+fn foo<T>() {
+    let a: [i32; 0] = [];
+    match [a[..]] {
+        //~^ ERROR cannot move a value of type `[i32]
+        //~| ERROR cannot move out of type `[i32]`, a non-copy slice
+        [[x]] => {}
+        _ => (),
+    }
+}
+
+fn main() {}
diff --git a/tests/ui/unsized/issue-115809.stderr b/tests/ui/unsized/issue-115809.stderr
new file mode 100644
index 00000000000..a92554b79b9
--- /dev/null
+++ b/tests/ui/unsized/issue-115809.stderr
@@ -0,0 +1,19 @@
+error[E0161]: cannot move a value of type `[i32]`
+  --> $DIR/issue-115809.rs:5:12
+   |
+LL |     match [a[..]] {
+   |            ^^^^^ the size of `[i32]` cannot be statically determined
+
+error[E0508]: cannot move out of type `[i32]`, a non-copy slice
+  --> $DIR/issue-115809.rs:5:12
+   |
+LL |     match [a[..]] {
+   |            ^^^^^
+   |            |
+   |            cannot move out of here
+   |            move occurs because value has type `[i32]`, which does not implement the `Copy` trait
+
+error: aborting due to 2 previous errors
+
+Some errors have detailed explanations: E0161, E0508.
+For more information about an error, try `rustc --explain E0161`.
diff --git a/tests/ui/unsized/issue-75707.stderr b/tests/ui/unsized/issue-75707.stderr
index 97618ed05ed..aa7f9c78fa8 100644
--- a/tests/ui/unsized/issue-75707.stderr
+++ b/tests/ui/unsized/issue-75707.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `MyCall: Callback` is not satisfied
 LL |     f::<dyn Processing<Call = MyCall>>();
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Callback` is not implemented for `MyCall`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-75707.rs:1:1
+   |
+LL | pub trait Callback {
+   | ^^^^^^^^^^^^^^^^^^
 note: required by a bound in `f`
   --> $DIR/issue-75707.rs:9:9
    |
diff --git a/tests/ui/wf/hir-wf-canonicalized.stderr b/tests/ui/wf/hir-wf-canonicalized.stderr
index 9fd0f9c81eb..21122e37da5 100644
--- a/tests/ui/wf/hir-wf-canonicalized.stderr
+++ b/tests/ui/wf/hir-wf-canonicalized.stderr
@@ -3,12 +3,24 @@ error[E0277]: the trait bound `Bar<'a, T>: Foo` is not satisfied
    |
 LL |     callback: Box<dyn Callback<dyn Callback<Bar<'a, T>>>>,
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `Bar<'a, T>`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/hir-wf-canonicalized.rs:3:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 
 error[E0277]: the trait bound `(dyn Callback<Bar<'a, T>, for<'b, 'c, 'd> Output = ()> + 'static): Foo` is not satisfied
   --> $DIR/hir-wf-canonicalized.rs:10:15
    |
 LL |     callback: Box<dyn Callback<dyn Callback<Bar<'a, T>>>>,
    |               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `(dyn Callback<Bar<'a, T>, for<'b, 'c, 'd> Output = ()> + 'static)`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/hir-wf-canonicalized.rs:3:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 
 error[E0277]: the size for values of type `(dyn Callback<Bar<'a, T>, for<'b, 'c, 'd> Output = ()> + 'static)` cannot be known at compilation time
   --> $DIR/hir-wf-canonicalized.rs:10:15
diff --git a/tests/ui/wf/issue-95665.stderr b/tests/ui/wf/issue-95665.stderr
index b1cda59a916..f80cd41a4c2 100644
--- a/tests/ui/wf/issue-95665.stderr
+++ b/tests/ui/wf/issue-95665.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `u8: Trait` is not satisfied
 LL |     static VAR: Struct<u8>;
    |                 ^^^^^^^^^^ the trait `Trait` is not implemented for `u8`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/issue-95665.rs:4:1
+   |
+LL | pub trait Trait: {}
+   | ^^^^^^^^^^^^^^^
 note: required by a bound in `Struct`
   --> $DIR/issue-95665.rs:6:22
    |
diff --git a/tests/ui/wf/wf-complex-assoc-type.stderr b/tests/ui/wf/wf-complex-assoc-type.stderr
index ef613e3132d..6a623bec815 100644
--- a/tests/ui/wf/wf-complex-assoc-type.stderr
+++ b/tests/ui/wf/wf-complex-assoc-type.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `bool: MyTrait` is not satisfied
 LL |     type MyItem = Option<((AssertMyTrait<bool>, u8))>;
    |                            ^^^^^^^^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `bool`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/wf-complex-assoc-type.rs:1:1
+   |
+LL | trait MyTrait {}
+   | ^^^^^^^^^^^^^
 note: required by a bound in `AssertMyTrait`
   --> $DIR/wf-complex-assoc-type.rs:2:25
    |
diff --git a/tests/ui/wf/wf-foreign-fn-decl-ret.stderr b/tests/ui/wf/wf-foreign-fn-decl-ret.stderr
index b03023b5fd1..0e93601043a 100644
--- a/tests/ui/wf/wf-foreign-fn-decl-ret.stderr
+++ b/tests/ui/wf/wf-foreign-fn-decl-ret.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `(): Foo` is not satisfied
    |
 LL |     pub fn lint_me() -> <() as Foo>::Assoc;
    |                         ^^^^^^^^^^^^^^^^^^ the trait `Foo` is not implemented for `()`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/wf-foreign-fn-decl-ret.rs:6:1
+   |
+LL | pub trait Foo {
+   | ^^^^^^^^^^^^^
 
 error[E0277]: the trait bound `u32: Unsatisfied` is not satisfied
   --> $DIR/wf-foreign-fn-decl-ret.rs:14:32
@@ -10,6 +16,11 @@ error[E0277]: the trait bound `u32: Unsatisfied` is not satisfied
 LL |     pub fn lint_me_aswell() -> Bar<u32>;
    |                                ^^^^^^^^ the trait `Unsatisfied` is not implemented for `u32`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/wf-foreign-fn-decl-ret.rs:1:1
+   |
+LL | pub trait Unsatisfied {}
+   | ^^^^^^^^^^^^^^^^^^^^^
 note: required by a bound in `Bar`
   --> $DIR/wf-foreign-fn-decl-ret.rs:4:19
    |
diff --git a/tests/ui/wf/wf-packed-on-proj-of-type-as-unimpl-trait.stderr b/tests/ui/wf/wf-packed-on-proj-of-type-as-unimpl-trait.stderr
index e460cdcd3f3..52f46562c37 100644
--- a/tests/ui/wf/wf-packed-on-proj-of-type-as-unimpl-trait.stderr
+++ b/tests/ui/wf/wf-packed-on-proj-of-type-as-unimpl-trait.stderr
@@ -3,6 +3,12 @@ error[E0277]: the trait bound `DefaultAllocator: Allocator` is not satisfied
    |
 LL | struct Foo(Matrix<<DefaultAllocator as Allocator>::Buffer>);
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `Allocator` is not implemented for `DefaultAllocator`
+   |
+help: this trait has no implementations, consider adding one
+  --> $DIR/wf-packed-on-proj-of-type-as-unimpl-trait.rs:23:1
+   |
+LL | pub trait Allocator { type Buffer; }
+   | ^^^^^^^^^^^^^^^^^^^
 
 error: aborting due to previous error
 
diff --git a/tests/ui/where-clauses/higher-ranked-fn-type.quiet.stderr b/tests/ui/where-clauses/higher-ranked-fn-type.quiet.stderr
index 191a8ca8ebc..29b36f44a4d 100644
--- a/tests/ui/where-clauses/higher-ranked-fn-type.quiet.stderr
+++ b/tests/ui/where-clauses/higher-ranked-fn-type.quiet.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `for<'b> fn(&'b ()): Foo` is not satisfied
 LL |     called()
    |     ^^^^^^ the trait `for<'b> Foo` is not implemented for `fn(&'b ())`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/higher-ranked-fn-type.rs:6:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 note: required by a bound in `called`
   --> $DIR/higher-ranked-fn-type.rs:12:25
    |
diff --git a/tests/ui/where-clauses/higher-ranked-fn-type.verbose.stderr b/tests/ui/where-clauses/higher-ranked-fn-type.verbose.stderr
index ce409f627be..54afeaa7eda 100644
--- a/tests/ui/where-clauses/higher-ranked-fn-type.verbose.stderr
+++ b/tests/ui/where-clauses/higher-ranked-fn-type.verbose.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `for<Region(BrNamed(DefId(0:6 ~ higher_ranked_fn_t
 LL |     called()
    |     ^^^^^^ the trait `for<Region(BrNamed(DefId(0:6 ~ higher_ranked_fn_type[9e51]::called::'b), 'b))> Foo` is not implemented for `fn(&ReLateBound(DebruijnIndex(1), BoundRegion { var: 0, kind: BrNamed(DefId(0:6 ~ higher_ranked_fn_type[9e51]::called::'b), 'b) }) ())`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/higher-ranked-fn-type.rs:6:1
+   |
+LL | trait Foo {
+   | ^^^^^^^^^
 note: required by a bound in `called`
   --> $DIR/higher-ranked-fn-type.rs:12:25
    |
diff --git a/tests/ui/where-clauses/where-clause-method-substituion.stderr b/tests/ui/where-clauses/where-clause-method-substituion.stderr
index 8c47ed6d431..2f3b615a13b 100644
--- a/tests/ui/where-clauses/where-clause-method-substituion.stderr
+++ b/tests/ui/where-clauses/where-clause-method-substituion.stderr
@@ -4,6 +4,11 @@ error[E0277]: the trait bound `X: Foo<X>` is not satisfied
 LL |     1.method::<X>();
    |                ^ the trait `Foo<X>` is not implemented for `X`
    |
+help: this trait has no implementations, consider adding one
+  --> $DIR/where-clause-method-substituion.rs:1:1
+   |
+LL | trait Foo<T> {
+   | ^^^^^^^^^^^^
 note: required by a bound in `Bar::method`
   --> $DIR/where-clause-method-substituion.rs:6:34
    |