diff options
242 files changed, 2073 insertions, 1686 deletions
diff --git a/RELEASES.md b/RELEASES.md index e72905c15bd..85266a17550 100644 --- a/RELEASES.md +++ b/RELEASES.md @@ -1481,7 +1481,7 @@ and related tools. [is_power_of_two_usize]: https://doc.rust-lang.org/stable/core/num/struct.NonZeroUsize.html#method.is_power_of_two [stdarch/1266]: https://github.com/rust-lang/stdarch/pull/1266 -Version 1.58.1 (2022-01-19) +Version 1.58.1 (2022-01-20) =========================== * Fix race condition in `std::fs::remove_dir_all` ([CVE-2022-21658]) diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs index 3f0b1627afa..db296aa44db 100644 --- a/compiler/rustc_ast/src/tokenstream.rs +++ b/compiler/rustc_ast/src/tokenstream.rs @@ -551,6 +551,10 @@ impl TokenStream { vec_mut.extend(stream_iter); } } + + pub fn chunks(&self, chunk_size: usize) -> core::slice::Chunks<'_, TokenTree> { + self.0.chunks(chunk_size) + } } /// By-reference iterator over a [`TokenStream`], that produces `&TokenTree` diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index 315303b25fe..eb25d454339 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -35,7 +35,7 @@ use rustc_middle::mir::{ use rustc_middle::mir::{AggregateKind, BasicBlock, BorrowCheckResult, BorrowKind}; use rustc_middle::mir::{InlineAsmOperand, Terminator, TerminatorKind}; use rustc_middle::mir::{ProjectionElem, Promoted, Rvalue, Statement, StatementKind}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, CapturedPlace, ParamEnv, RegionVid, TyCtxt}; use rustc_session::lint::builtin::UNUSED_MUT; use rustc_span::{Span, Symbol}; diff --git a/compiler/rustc_codegen_gcc/src/lib.rs b/compiler/rustc_codegen_gcc/src/lib.rs index 1cabb05de97..442ce0ea542 100644 --- a/compiler/rustc_codegen_gcc/src/lib.rs +++ b/compiler/rustc_codegen_gcc/src/lib.rs @@ -80,8 +80,8 @@ use rustc_errors::{DiagnosticMessage, ErrorGuaranteed, Handler, SubdiagnosticMes use rustc_fluent_macro::fluent_messages; use rustc_metadata::EncodedMetadata; use rustc_middle::dep_graph::{WorkProduct, WorkProductId}; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; -use rustc_middle::ty::query::Providers; use rustc_session::config::{Lto, OptLevel, OutputFilenames}; use rustc_session::Session; use rustc_span::Symbol; diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs index 8305a0a4c28..6a86237d79e 100644 --- a/compiler/rustc_codegen_llvm/src/lib.rs +++ b/compiler/rustc_codegen_llvm/src/lib.rs @@ -37,7 +37,7 @@ use rustc_errors::{DiagnosticMessage, ErrorGuaranteed, FatalError, Handler, Subd use rustc_fluent_macro::fluent_messages; use rustc_metadata::EncodedMetadata; use rustc_middle::dep_graph::{WorkProduct, WorkProductId}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::config::{OptLevel, OutputFilenames, PrintRequest}; use rustc_session::Session; diff --git a/compiler/rustc_codegen_llvm/src/llvm_util.rs b/compiler/rustc_codegen_llvm/src/llvm_util.rs index 2fbdab9f8ce..994addf12eb 100644 --- a/compiler/rustc_codegen_llvm/src/llvm_util.rs +++ b/compiler/rustc_codegen_llvm/src/llvm_util.rs @@ -155,12 +155,6 @@ pub fn to_llvm_features<'a>(sess: &Session, s: &'a str) -> SmallVec<[&'a str; 2] ("x86", "rdrand") => smallvec!["rdrnd"], ("x86", "bmi1") => smallvec!["bmi"], ("x86", "cmpxchg16b") => smallvec!["cx16"], - // FIXME: These aliases are misleading, and should be removed before avx512_target_feature is - // stabilized. They must remain until std::arch switches off them. - // rust#100752 - ("x86", "avx512vaes") => smallvec!["vaes"], - ("x86", "avx512gfni") => smallvec!["gfni"], - ("x86", "avx512vpclmulqdq") => smallvec!["vpclmulqdq"], ("aarch64", "rcpc2") => smallvec!["rcpc-immo"], ("aarch64", "dpb") => smallvec!["ccpp"], ("aarch64", "dpb2") => smallvec!["ccdp"], diff --git a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs index 8f2f829c17c..14460efc1b0 100644 --- a/compiler/rustc_codegen_ssa/src/back/symbol_export.rs +++ b/compiler/rustc_codegen_ssa/src/back/symbol_export.rs @@ -11,7 +11,7 @@ use rustc_middle::middle::exported_symbols::{ metadata_symbol_name, ExportedSymbol, SymbolExportInfo, SymbolExportKind, SymbolExportLevel, }; use rustc_middle::query::LocalCrate; -use rustc_middle::ty::query::{ExternProviders, Providers}; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_middle::ty::subst::{GenericArgKind, SubstsRef}; use rustc_middle::ty::Instance; use rustc_middle::ty::{self, SymbolName, TyCtxt}; diff --git a/compiler/rustc_codegen_ssa/src/base.rs b/compiler/rustc_codegen_ssa/src/base.rs index 1805c6fabdf..d9b0a152594 100644 --- a/compiler/rustc_codegen_ssa/src/base.rs +++ b/compiler/rustc_codegen_ssa/src/base.rs @@ -27,8 +27,8 @@ use rustc_middle::middle::exported_symbols; use rustc_middle::middle::exported_symbols::SymbolExportKind; use rustc_middle::middle::lang_items; use rustc_middle::mir::mono::{CodegenUnit, CodegenUnitNameBuilder, MonoItem}; +use rustc_middle::query::Providers; use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, TyAndLayout}; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, Instance, Ty, TyCtxt}; use rustc_session::cgu_reuse_tracker::CguReuse; use rustc_session::config::{self, CrateType, EntryFnType, OutputType}; diff --git a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs index 8dae5dab429..d6c23012762 100644 --- a/compiler/rustc_codegen_ssa/src/codegen_attrs.rs +++ b/compiler/rustc_codegen_ssa/src/codegen_attrs.rs @@ -7,7 +7,7 @@ use rustc_hir::def_id::{DefId, LocalDefId, LOCAL_CRATE}; use rustc_hir::{lang_items, weak_lang_items::WEAK_LANG_ITEMS, LangItem}; use rustc_middle::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs}; use rustc_middle::mir::mono::Linkage; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self as ty, TyCtxt}; use rustc_session::{lint, parse::feature_err}; use rustc_span::symbol::Ident; diff --git a/compiler/rustc_codegen_ssa/src/lib.rs b/compiler/rustc_codegen_ssa/src/lib.rs index c3cc17c255b..f4b9d1dea58 100644 --- a/compiler/rustc_codegen_ssa/src/lib.rs +++ b/compiler/rustc_codegen_ssa/src/lib.rs @@ -30,7 +30,7 @@ use rustc_hir::def_id::CrateNum; use rustc_middle::dep_graph::WorkProduct; use rustc_middle::middle::dependency_format::Dependencies; use rustc_middle::middle::exported_symbols::SymbolExportKind; -use rustc_middle::ty::query::{ExternProviders, Providers}; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_serialize::opaque::{FileEncoder, MemDecoder}; use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; use rustc_session::config::{CrateType, OutputFilenames, OutputType, RUST_CGU_EXT}; diff --git a/compiler/rustc_codegen_ssa/src/target_features.rs b/compiler/rustc_codegen_ssa/src/target_features.rs index 1cfc4b933a8..3719283cccc 100644 --- a/compiler/rustc_codegen_ssa/src/target_features.rs +++ b/compiler/rustc_codegen_ssa/src/target_features.rs @@ -8,7 +8,7 @@ use rustc_hir::def::DefKind; use rustc_hir::def_id::DefId; use rustc_hir::def_id::LocalDefId; use rustc_hir::def_id::LOCAL_CRATE; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::parse::feature_err; use rustc_session::Session; @@ -173,16 +173,13 @@ const X86_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[ ("avx512dq", Some(sym::avx512_target_feature)), ("avx512er", Some(sym::avx512_target_feature)), ("avx512f", Some(sym::avx512_target_feature)), - ("avx512gfni", Some(sym::avx512_target_feature)), ("avx512ifma", Some(sym::avx512_target_feature)), ("avx512pf", Some(sym::avx512_target_feature)), - ("avx512vaes", Some(sym::avx512_target_feature)), ("avx512vbmi", Some(sym::avx512_target_feature)), ("avx512vbmi2", Some(sym::avx512_target_feature)), ("avx512vl", Some(sym::avx512_target_feature)), ("avx512vnni", Some(sym::avx512_target_feature)), ("avx512vp2intersect", Some(sym::avx512_target_feature)), - ("avx512vpclmulqdq", Some(sym::avx512_target_feature)), ("avx512vpopcntdq", Some(sym::avx512_target_feature)), ("bmi1", None), ("bmi2", None), diff --git a/compiler/rustc_codegen_ssa/src/traits/backend.rs b/compiler/rustc_codegen_ssa/src/traits/backend.rs index 684598eebe6..5c88368bc87 100644 --- a/compiler/rustc_codegen_ssa/src/traits/backend.rs +++ b/compiler/rustc_codegen_ssa/src/traits/backend.rs @@ -8,8 +8,8 @@ use rustc_data_structures::fx::FxHashMap; use rustc_errors::ErrorGuaranteed; use rustc_metadata::EncodedMetadata; use rustc_middle::dep_graph::{WorkProduct, WorkProductId}; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_middle::ty::layout::{FnAbiOf, HasTyCtxt, LayoutOf, TyAndLayout}; -use rustc_middle::ty::query::{ExternProviders, Providers}; use rustc_middle::ty::{Ty, TyCtxt}; use rustc_session::{ config::{self, OutputFilenames, PrintRequest}, diff --git a/compiler/rustc_const_eval/src/const_eval/error.rs b/compiler/rustc_const_eval/src/const_eval/error.rs index cdef3fb2339..5037c210e7d 100644 --- a/compiler/rustc_const_eval/src/const_eval/error.rs +++ b/compiler/rustc_const_eval/src/const_eval/error.rs @@ -169,14 +169,14 @@ impl<'tcx> ConstEvalErr<'tcx> { // See <https://github.com/rust-lang/rust/pull/63152>. let mut err = struct_error(tcx, &self.error.to_string()); self.decorate(&mut err, decorate); - ErrorHandled::Reported(err.emit()) + ErrorHandled::Reported(err.emit().into()) } _ => { // Report as hard error. let mut err = struct_error(tcx, message); err.span_label(self.span, self.error.to_string()); self.decorate(&mut err, decorate); - ErrorHandled::Reported(err.emit()) + ErrorHandled::Reported(err.emit().into()) } } } diff --git a/compiler/rustc_const_eval/src/const_eval/fn_queries.rs b/compiler/rustc_const_eval/src/const_eval/fn_queries.rs index 088a824fd8f..fa8253d5e49 100644 --- a/compiler/rustc_const_eval/src/const_eval/fn_queries.rs +++ b/compiler/rustc_const_eval/src/const_eval/fn_queries.rs @@ -2,7 +2,7 @@ use rustc_attr as attr; use rustc_hir as hir; use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, LocalDefId}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_span::symbol::Symbol; diff --git a/compiler/rustc_const_eval/src/const_eval/machine.rs b/compiler/rustc_const_eval/src/const_eval/machine.rs index 814b67b46ec..58b5755af07 100644 --- a/compiler/rustc_const_eval/src/const_eval/machine.rs +++ b/compiler/rustc_const_eval/src/const_eval/machine.rs @@ -382,7 +382,7 @@ impl<'mir, 'tcx> interpret::Machine<'mir, 'tcx> for CompileTimeInterpreter<'mir, rustc_span::DUMMY_SP, "This is likely a const item that is missing from its impl", ); - throw_inval!(AlreadyReported(guar)); + throw_inval!(AlreadyReported(guar.into())); } else { // `find_mir_or_eval_fn` checks that this is a const fn before even calling us, // so this should be unreachable. diff --git a/compiler/rustc_const_eval/src/interpret/eval_context.rs b/compiler/rustc_const_eval/src/interpret/eval_context.rs index b2197a0aabb..2fa63dc8c93 100644 --- a/compiler/rustc_const_eval/src/interpret/eval_context.rs +++ b/compiler/rustc_const_eval/src/interpret/eval_context.rs @@ -7,7 +7,7 @@ use either::{Either, Left, Right}; use rustc_hir::{self as hir, def_id::DefId, definitions::DefPathData}; use rustc_index::IndexVec; use rustc_middle::mir; -use rustc_middle::mir::interpret::{ErrorHandled, InterpError}; +use rustc_middle::mir::interpret::{ErrorHandled, InterpError, ReportedErrorInfo}; use rustc_middle::ty::layout::{ self, FnAbiError, FnAbiOfHelpers, FnAbiRequest, LayoutError, LayoutOf, LayoutOfHelpers, TyAndLayout, @@ -470,7 +470,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { }; // do not continue if typeck errors occurred (can only occur in local crate) if let Some(err) = body.tainted_by_errors { - throw_inval!(AlreadyReported(err)); + throw_inval!(AlreadyReported(ReportedErrorInfo::tainted_by_errors(err))); } Ok(body) } @@ -517,7 +517,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { Ok(None) => throw_inval!(TooGeneric), // FIXME(eddyb) this could be a bit more specific than `AlreadyReported`. - Err(error_reported) => throw_inval!(AlreadyReported(error_reported)), + Err(error_reported) => throw_inval!(AlreadyReported(error_reported.into())), } } @@ -905,7 +905,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { query(self.tcx.at(span.unwrap_or_else(|| self.cur_span()))).map_err(|err| { match err { ErrorHandled::Reported(err) => { - if let Some(span) = span { + if !err.is_tainted_by_errors() && let Some(span) = span { // To make it easier to figure out where this error comes from, also add a note at the current location. self.tcx.sess.span_note_without_error(span, "erroneous constant used"); } diff --git a/compiler/rustc_const_eval/src/interpret/operand.rs b/compiler/rustc_const_eval/src/interpret/operand.rs index a7f66071fe2..e30af165501 100644 --- a/compiler/rustc_const_eval/src/interpret/operand.rs +++ b/compiler/rustc_const_eval/src/interpret/operand.rs @@ -595,7 +595,7 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { // FIXME(generic_const_exprs): `ConstKind::Expr` should be able to be evaluated ty::ConstKind::Expr(_) => throw_inval!(TooGeneric), ty::ConstKind::Error(reported) => { - throw_inval!(AlreadyReported(reported)) + throw_inval!(AlreadyReported(reported.into())) } ty::ConstKind::Unevaluated(uv) => { let instance = self.resolve(uv.def, uv.substs)?; diff --git a/compiler/rustc_const_eval/src/lib.rs b/compiler/rustc_const_eval/src/lib.rs index 1b66eca97a5..c36282d5ed4 100644 --- a/compiler/rustc_const_eval/src/lib.rs +++ b/compiler/rustc_const_eval/src/lib.rs @@ -35,8 +35,8 @@ pub mod util; use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage}; use rustc_fluent_macro::fluent_messages; +use rustc_middle::query::Providers; use rustc_middle::ty; -use rustc_middle::ty::query::Providers; fluent_messages! { "../messages.ftl" } diff --git a/compiler/rustc_const_eval/src/transform/validate.rs b/compiler/rustc_const_eval/src/transform/validate.rs index c50e937d84f..3c350e25ba6 100644 --- a/compiler/rustc_const_eval/src/transform/validate.rs +++ b/compiler/rustc_const_eval/src/transform/validate.rs @@ -164,7 +164,7 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { if let Some(root) = post_contract_node.get(&bb) { break *root; } - let parent = doms.immediate_dominator(bb); + let parent = doms.immediate_dominator(bb).unwrap(); dom_path.push(bb); if !self.body.basic_blocks[parent].is_cleanup { break bb; diff --git a/compiler/rustc_data_structures/src/graph/dominators/mod.rs b/compiler/rustc_data_structures/src/graph/dominators/mod.rs index e76bdac2864..a7de709ba72 100644 --- a/compiler/rustc_data_structures/src/graph/dominators/mod.rs +++ b/compiler/rustc_data_structures/src/graph/dominators/mod.rs @@ -242,7 +242,9 @@ pub fn dominators<G: ControlFlowGraph>(graph: G) -> Dominators<G::Node> { immediate_dominators[*node] = Some(pre_order_to_real[idom[idx]]); } - Dominators { post_order_rank, immediate_dominators } + let start_node = graph.start_node(); + immediate_dominators[start_node] = None; + Dominators { start_node, post_order_rank, immediate_dominators } } /// Evaluate the link-eval virtual forest, providing the currently minimum semi @@ -308,6 +310,7 @@ fn compress( /// Tracks the list of dominators for each node. #[derive(Clone, Debug)] pub struct Dominators<N: Idx> { + start_node: N, post_order_rank: IndexVec<N, usize>, // Even though we track only the immediate dominator of each node, it's // possible to get its full list of dominators by looking up the dominator @@ -316,14 +319,14 @@ pub struct Dominators<N: Idx> { } impl<Node: Idx> Dominators<Node> { - /// Whether the given Node has an immediate dominator. + /// Returns true if node is reachable from the start node. pub fn is_reachable(&self, node: Node) -> bool { - self.immediate_dominators[node].is_some() + node == self.start_node || self.immediate_dominators[node].is_some() } - pub fn immediate_dominator(&self, node: Node) -> Node { - assert!(self.is_reachable(node), "node {node:?} is not reachable"); - self.immediate_dominators[node].unwrap() + /// Returns the immediate dominator of node, if any. + pub fn immediate_dominator(&self, node: Node) -> Option<Node> { + self.immediate_dominators[node] } /// Provides an iterator over each dominator up the CFG, for the given Node. @@ -357,12 +360,7 @@ impl<'dom, Node: Idx> Iterator for Iter<'dom, Node> { fn next(&mut self) -> Option<Self::Item> { if let Some(node) = self.node { - let dom = self.dominators.immediate_dominator(node); - if dom == node { - self.node = None; // reached the root - } else { - self.node = Some(dom); - } + self.node = self.dominators.immediate_dominator(node); Some(node) } else { None diff --git a/compiler/rustc_data_structures/src/graph/dominators/tests.rs b/compiler/rustc_data_structures/src/graph/dominators/tests.rs index ff31d8f7fdc..8b124516623 100644 --- a/compiler/rustc_data_structures/src/graph/dominators/tests.rs +++ b/compiler/rustc_data_structures/src/graph/dominators/tests.rs @@ -8,7 +8,7 @@ fn diamond() { let dominators = dominators(&graph); let immediate_dominators = &dominators.immediate_dominators; - assert_eq!(immediate_dominators[0], Some(0)); + assert_eq!(immediate_dominators[0], None); assert_eq!(immediate_dominators[1], Some(0)); assert_eq!(immediate_dominators[2], Some(0)); assert_eq!(immediate_dominators[3], Some(0)); @@ -30,7 +30,7 @@ fn paper() { assert_eq!(immediate_dominators[3], Some(6)); assert_eq!(immediate_dominators[4], Some(6)); assert_eq!(immediate_dominators[5], Some(6)); - assert_eq!(immediate_dominators[6], Some(6)); + assert_eq!(immediate_dominators[6], None); } #[test] @@ -43,3 +43,13 @@ fn paper_slt() { dominators(&graph); } + +#[test] +fn immediate_dominator() { + let graph = TestGraph::new(1, &[(1, 2), (2, 3)]); + let dominators = dominators(&graph); + assert_eq!(dominators.immediate_dominator(0), None); + assert_eq!(dominators.immediate_dominator(1), None); + assert_eq!(dominators.immediate_dominator(2), Some(1)); + assert_eq!(dominators.immediate_dominator(3), Some(2)); +} diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs index fe8c630666b..57e55752027 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/active.rs @@ -338,7 +338,7 @@ declare_features! ( /// Allow conditional compilation depending on rust version (active, cfg_version, "1.45.0", Some(64796), None), /// Allows to use the `#[cfi_encoding = ""]` attribute. - (active, cfi_encoding, "1.69.0", Some(89653), None), + (active, cfi_encoding, "CURRENT_RUSTC_VERSION", Some(89653), None), /// Allows `for<...>` on closures and generators. (active, closure_lifetime_binder, "1.64.0", Some(97362), None), /// Allows `#[track_caller]` on closures and generators. diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs index 6ac1df6a079..7e591fd25bf 100644 --- a/compiler/rustc_hir_analysis/src/astconv/mod.rs +++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs @@ -464,7 +464,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { self.astconv.ct_infer(ty, Some(param), inf.span).into() } else { self.inferred_params.push(inf.span); - tcx.const_error(ty).into() + tcx.const_error_misc(ty).into() } } _ => unreachable!(), @@ -518,7 +518,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { .no_bound_vars() .expect("const parameter types cannot be generic"); if let Err(guar) = ty.error_reported() { - return tcx.const_error_with_guaranteed(ty, guar).into(); + return tcx.const_error(ty, guar).into(); } if !infer_args && has_default { tcx.const_param_default(param.def_id).subst(tcx, substs.unwrap()).into() @@ -527,7 +527,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { self.astconv.ct_infer(ty, Some(param), self.span).into() } else { // We've already errored above about the mismatch. - tcx.const_error(ty).into() + tcx.const_error_misc(ty).into() } } } @@ -1387,7 +1387,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { term = match def_kind { hir::def::DefKind::AssocTy => tcx.ty_error(reported).into(), hir::def::DefKind::AssocConst => tcx - .const_error_with_guaranteed( + .const_error( tcx.type_of(assoc_item_def_id) .subst(tcx, projection_ty.skip_binder().substs), reported, diff --git a/compiler/rustc_hir_analysis/src/check/check.rs b/compiler/rustc_hir_analysis/src/check/check.rs index 78ffe59679a..d3495d3dbd7 100644 --- a/compiler/rustc_hir_analysis/src/check/check.rs +++ b/compiler/rustc_hir_analysis/src/check/check.rs @@ -1514,8 +1514,8 @@ fn opaque_type_cycle_error( } if tcx.sess.opts.unstable_opts.drop_tracking_mir && let DefKind::Generator = tcx.def_kind(closure_def_id) + && let Some(generator_layout) = tcx.mir_generator_witnesses(closure_def_id) { - let generator_layout = tcx.mir_generator_witnesses(closure_def_id); for interior_ty in &generator_layout.field_tys { label_match(interior_ty.ty, interior_ty.source_info.span); } diff --git a/compiler/rustc_hir_analysis/src/check/mod.rs b/compiler/rustc_hir_analysis/src/check/mod.rs index 08154cdae47..3971a4c01d6 100644 --- a/compiler/rustc_hir_analysis/src/check/mod.rs +++ b/compiler/rustc_hir_analysis/src/check/mod.rs @@ -78,7 +78,7 @@ use rustc_errors::{pluralize, struct_span_err, Diagnostic, DiagnosticBuilder}; use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::intravisit::Visitor; use rustc_index::bit_set::BitSet; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_middle::ty::{InternalSubsts, SubstsRef}; use rustc_session::parse::feature_err; diff --git a/compiler/rustc_hir_analysis/src/check/wfcheck.rs b/compiler/rustc_hir_analysis/src/check/wfcheck.rs index 862f0a9b0e2..8918553e5f9 100644 --- a/compiler/rustc_hir_analysis/src/check/wfcheck.rs +++ b/compiler/rustc_hir_analysis/src/check/wfcheck.rs @@ -12,7 +12,7 @@ use rustc_infer::infer::outlives::env::{OutlivesEnvironment, RegionBoundPairs}; use rustc_infer::infer::outlives::obligations::TypeOutlives; use rustc_infer::infer::{self, InferCtxt, TyCtxtInferExt}; use rustc_middle::mir::ConstraintCategory; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::trait_def::TraitSpecializationKind; use rustc_middle::ty::{ self, AdtKind, GenericParamDefKind, Ty, TyCtxt, TypeFoldable, TypeSuperVisitable, diff --git a/compiler/rustc_hir_analysis/src/coherence/mod.rs b/compiler/rustc_hir_analysis/src/coherence/mod.rs index cd2ec2bef20..4524b87a418 100644 --- a/compiler/rustc_hir_analysis/src/coherence/mod.rs +++ b/compiler/rustc_hir_analysis/src/coherence/mod.rs @@ -8,7 +8,7 @@ use crate::errors; use rustc_errors::{error_code, struct_span_err}; use rustc_hir::def_id::{DefId, LocalDefId}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt}; use rustc_span::sym; use rustc_trait_selection::traits; diff --git a/compiler/rustc_hir_analysis/src/collect.rs b/compiler/rustc_hir_analysis/src/collect.rs index 2f808d4ce73..9f00dc418ee 100644 --- a/compiler/rustc_hir_analysis/src/collect.rs +++ b/compiler/rustc_hir_analysis/src/collect.rs @@ -28,7 +28,7 @@ use rustc_hir::{GenericParamKind, Node}; use rustc_infer::infer::{InferCtxt, TyCtxtInferExt}; use rustc_infer::traits::ObligationCause; use rustc_middle::hir::nested_filter; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::util::{Discr, IntTypeExt}; use rustc_middle::ty::{self, AdtKind, Const, IsSuggestable, ToPredicate, Ty, TyCtxt}; use rustc_span::symbol::{kw, sym, Ident, Symbol}; diff --git a/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs b/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs index 92ae93cf4cc..794812a5ce7 100644 --- a/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs +++ b/compiler/rustc_hir_analysis/src/collect/resolve_bound_vars.rs @@ -17,6 +17,7 @@ use rustc_hir::{GenericArg, GenericParam, GenericParamKind, HirIdMap, LifetimeNa use rustc_middle::bug; use rustc_middle::hir::nested_filter; use rustc_middle::middle::resolve_bound_vars::*; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt, TypeSuperVisitable, TypeVisitor}; use rustc_session::lint; use rustc_span::def_id::DefId; @@ -232,8 +233,8 @@ impl<'a> fmt::Debug for TruncatedScopeDebug<'a> { type ScopeRef<'a> = &'a Scope<'a>; -pub(crate) fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { +pub(crate) fn provide(providers: &mut Providers) { + *providers = Providers { resolve_bound_vars, named_variable_map: |tcx, id| tcx.resolve_bound_vars(id).defs.get(&id), diff --git a/compiler/rustc_hir_analysis/src/hir_wf_check.rs b/compiler/rustc_hir_analysis/src/hir_wf_check.rs index 8269a6ddea5..e4c6e6e391a 100644 --- a/compiler/rustc_hir_analysis/src/hir_wf_check.rs +++ b/compiler/rustc_hir_analysis/src/hir_wf_check.rs @@ -4,7 +4,7 @@ use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{ForeignItem, ForeignItemKind}; use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::traits::{ObligationCause, WellFormedLoc}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Region, TyCtxt, TypeFoldable, TypeFolder}; use rustc_span::def_id::LocalDefId; use rustc_trait_selection::traits::{self, ObligationCtxt}; diff --git a/compiler/rustc_hir_analysis/src/impl_wf_check.rs b/compiler/rustc_hir_analysis/src/impl_wf_check.rs index f070b4f9bae..612d4ff3df8 100644 --- a/compiler/rustc_hir_analysis/src/impl_wf_check.rs +++ b/compiler/rustc_hir_analysis/src/impl_wf_check.rs @@ -15,7 +15,7 @@ use rustc_data_structures::fx::FxHashSet; use rustc_errors::struct_span_err; use rustc_hir::def::DefKind; use rustc_hir::def_id::LocalDefId; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt}; use rustc_span::{Span, Symbol}; diff --git a/compiler/rustc_hir_analysis/src/lib.rs b/compiler/rustc_hir_analysis/src/lib.rs index 3fe34f23aef..5cd2cd50c11 100644 --- a/compiler/rustc_hir_analysis/src/lib.rs +++ b/compiler/rustc_hir_analysis/src/lib.rs @@ -104,7 +104,7 @@ use rustc_hir as hir; use rustc_hir::Node; use rustc_infer::infer::TyCtxtInferExt; use rustc_middle::middle; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_middle::util; use rustc_session::{config::EntryFnType, parse::feature_err}; diff --git a/compiler/rustc_hir_analysis/src/outlives/mod.rs b/compiler/rustc_hir_analysis/src/outlives/mod.rs index 42612eed750..a8596c707f3 100644 --- a/compiler/rustc_hir_analysis/src/outlives/mod.rs +++ b/compiler/rustc_hir_analysis/src/outlives/mod.rs @@ -1,7 +1,7 @@ use hir::Node; use rustc_hir as hir; use rustc_hir::def_id::LocalDefId; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::subst::GenericArgKind; use rustc_middle::ty::{self, CratePredicatesMap, TyCtxt}; use rustc_span::symbol::sym; diff --git a/compiler/rustc_hir_analysis/src/variance/mod.rs b/compiler/rustc_hir_analysis/src/variance/mod.rs index e735b048d73..3ebd9e134bf 100644 --- a/compiler/rustc_hir_analysis/src/variance/mod.rs +++ b/compiler/rustc_hir_analysis/src/variance/mod.rs @@ -6,7 +6,7 @@ use rustc_arena::DroplessArena; use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, LocalDefId}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, CrateVariancesMap, SubstsRef, Ty, TyCtxt}; use rustc_middle::ty::{TypeSuperVisitable, TypeVisitable}; use std::ops::ControlFlow; diff --git a/compiler/rustc_hir_typeck/src/lib.rs b/compiler/rustc_hir_typeck/src/lib.rs index dcc323493f4..54b222ade03 100644 --- a/compiler/rustc_hir_typeck/src/lib.rs +++ b/compiler/rustc_hir_typeck/src/lib.rs @@ -68,8 +68,8 @@ use rustc_hir::{HirIdMap, Node}; use rustc_hir_analysis::astconv::AstConv; use rustc_hir_analysis::check::check_abi; use rustc_infer::infer::type_variable::{TypeVariableOrigin, TypeVariableOriginKind}; +use rustc_middle::query::Providers; use rustc_middle::traits; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_session::config; use rustc_session::Session; diff --git a/compiler/rustc_hir_typeck/src/method/mod.rs b/compiler/rustc_hir_typeck/src/method/mod.rs index 5963a1632c5..cf9290c1a48 100644 --- a/compiler/rustc_hir_typeck/src/method/mod.rs +++ b/compiler/rustc_hir_typeck/src/method/mod.rs @@ -18,6 +18,7 @@ use rustc_hir as hir; use rustc_hir::def::{CtorOf, DefKind, Namespace}; use rustc_hir::def_id::DefId; use rustc_infer::infer::{self, InferOk}; +use rustc_middle::query::Providers; use rustc_middle::traits::ObligationCause; use rustc_middle::ty::subst::{InternalSubsts, SubstsRef}; use rustc_middle::ty::{self, GenericParamDefKind, Ty, TypeVisitableExt}; @@ -28,7 +29,7 @@ use rustc_trait_selection::traits::{self, NormalizeExt}; use self::probe::{IsSuggestion, ProbeScope}; -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { probe::provide(providers); } diff --git a/compiler/rustc_hir_typeck/src/method/probe.rs b/compiler/rustc_hir_typeck/src/method/probe.rs index 483e17460b3..f91f4f887c6 100644 --- a/compiler/rustc_hir_typeck/src/method/probe.rs +++ b/compiler/rustc_hir_typeck/src/method/probe.rs @@ -16,6 +16,7 @@ use rustc_infer::infer::canonical::{Canonical, QueryResponse}; use rustc_infer::infer::DefineOpaqueTypes; use rustc_infer::infer::{self, InferOk, TyCtxtInferExt}; use rustc_middle::middle::stability; +use rustc_middle::query::Providers; use rustc_middle::ty::fast_reject::{simplify_type, TreatParams}; use rustc_middle::ty::AssocItem; use rustc_middle::ty::GenericParamDefKind; @@ -495,7 +496,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { } } -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { providers.method_autoderef_steps = method_autoderef_steps; } diff --git a/compiler/rustc_hir_typeck/src/writeback.rs b/compiler/rustc_hir_typeck/src/writeback.rs index cf95d4f04bb..59bee69cfff 100644 --- a/compiler/rustc_hir_typeck/src/writeback.rs +++ b/compiler/rustc_hir_typeck/src/writeback.rs @@ -836,7 +836,7 @@ impl<'cx, 'tcx> TypeFolder<TyCtxt<'tcx>> for Resolver<'cx, 'tcx> { debug!("Resolver::fold_const: input const `{:?}` not fully resolvable", ct); let e = self.report_error(ct); self.replaced_with_error = Some(e); - self.interner().const_error_with_guaranteed(ct.ty(), e) + self.interner().const_error(ct.ty(), e) } } } diff --git a/compiler/rustc_infer/src/infer/combine.rs b/compiler/rustc_infer/src/infer/combine.rs index 08eec0707c0..79fc02c6c79 100644 --- a/compiler/rustc_infer/src/infer/combine.rs +++ b/compiler/rustc_infer/src/infer/combine.rs @@ -26,24 +26,17 @@ use super::equate::Equate; use super::glb::Glb; use super::lub::Lub; use super::sub::Sub; -use super::type_variable::TypeVariableValue; -use super::{DefineOpaqueTypes, InferCtxt, MiscVariable, TypeTrace}; +use super::{DefineOpaqueTypes, InferCtxt, TypeTrace}; +use crate::infer::generalize::{self, CombineDelegate, Generalization}; use crate::traits::{Obligation, PredicateObligations}; -use rustc_data_structures::sso::SsoHashMap; -use rustc_hir::def_id::DefId; use rustc_middle::infer::canonical::OriginalQueryValues; use rustc_middle::infer::unify_key::{ConstVarValue, ConstVariableValue}; use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKind}; -use rustc_middle::traits::ObligationCause; use rustc_middle::ty::error::{ExpectedFound, TypeError}; -use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation}; -use rustc_middle::ty::subst::SubstsRef; -use rustc_middle::ty::{ - self, AliasKind, FallibleTypeFolder, InferConst, ToPredicate, Ty, TyCtxt, TypeFoldable, - TypeSuperFoldable, TypeVisitableExt, -}; +use rustc_middle::ty::relate::{RelateResult, TypeRelation}; +use rustc_middle::ty::{self, AliasKind, InferConst, ToPredicate, Ty, TyCtxt, TypeVisitableExt}; use rustc_middle::ty::{IntType, UintType}; -use rustc_span::{Span, DUMMY_SP}; +use rustc_span::DUMMY_SP; #[derive(Clone)] pub struct CombineFields<'infcx, 'tcx> { @@ -55,13 +48,6 @@ pub struct CombineFields<'infcx, 'tcx> { pub define_opaque_types: DefineOpaqueTypes, } -#[derive(Copy, Clone, Debug)] -pub enum RelationDir { - SubtypeOf, - SupertypeOf, - EqTo, -} - impl<'tcx> InferCtxt<'tcx> { pub fn super_combine_tys<R>( &self, @@ -152,7 +138,7 @@ impl<'tcx> InferCtxt<'tcx> { Ok(a) } - _ => ty::relate::super_relate_tys(relation, a, b), + _ => ty::relate::structurally_relate_tys(relation, a, b), } } @@ -209,13 +195,13 @@ impl<'tcx> InferCtxt<'tcx> { // HACK: equating both sides with `[const error]` eagerly prevents us // from leaving unconstrained inference vars during things like impl // matching in the solver. - let a_error = self.tcx.const_error_with_guaranteed(a.ty(), guar); + let a_error = self.tcx.const_error(a.ty(), guar); if let ty::ConstKind::Infer(InferConst::Var(vid)) = a.kind() { - return self.unify_const_variable(vid, a_error); + return self.unify_const_variable(vid, a_error, relation.param_env()); } - let b_error = self.tcx.const_error_with_guaranteed(b.ty(), guar); + let b_error = self.tcx.const_error(b.ty(), guar); if let ty::ConstKind::Infer(InferConst::Var(vid)) = b.kind() { - return self.unify_const_variable(vid, b_error); + return self.unify_const_variable(vid, b_error, relation.param_env()); } return Ok(if relation.a_is_expected() { a_error } else { b_error }); @@ -237,11 +223,11 @@ impl<'tcx> InferCtxt<'tcx> { } (ty::ConstKind::Infer(InferConst::Var(vid)), _) => { - return self.unify_const_variable(vid, b); + return self.unify_const_variable(vid, b, relation.param_env()); } (_, ty::ConstKind::Infer(InferConst::Var(vid))) => { - return self.unify_const_variable(vid, a); + return self.unify_const_variable(vid, a, relation.param_env()); } (ty::ConstKind::Unevaluated(..), _) | (_, ty::ConstKind::Unevaluated(..)) if self.tcx.lazy_normalization() => @@ -252,7 +238,7 @@ impl<'tcx> InferCtxt<'tcx> { _ => {} } - ty::relate::super_relate_consts(relation, a, b) + ty::relate::structurally_relate_consts(relation, a, b) } /// Unifies the const variable `target_vid` with the given constant. @@ -294,24 +280,17 @@ impl<'tcx> InferCtxt<'tcx> { &self, target_vid: ty::ConstVid<'tcx>, ct: ty::Const<'tcx>, + param_env: ty::ParamEnv<'tcx>, ) -> RelateResult<'tcx, ty::Const<'tcx>> { - let (for_universe, span) = { - let mut inner = self.inner.borrow_mut(); - let variable_table = &mut inner.const_unification_table(); - let var_value = variable_table.probe_value(target_vid); - match var_value.val { - ConstVariableValue::Known { value } => { - bug!("instantiating {:?} which has a known value {:?}", target_vid, value) - } - ConstVariableValue::Unknown { universe } => (universe, var_value.origin.span), - } - }; - let value = ct.try_fold_with(&mut ConstInferUnifier { - infcx: self, - span, - for_universe, + let span = + self.inner.borrow_mut().const_unification_table().probe_value(target_vid).origin.span; + let Generalization { value, needs_wf: _ } = generalize::generalize( + self, + &mut CombineDelegate { infcx: self, span, param_env }, + ct, target_vid, - })?; + ty::Variance::Invariant, + )?; self.inner.borrow_mut().const_unification_table().union_value( target_vid, @@ -392,12 +371,10 @@ impl<'infcx, 'tcx> CombineFields<'infcx, 'tcx> { pub fn instantiate( &mut self, a_ty: Ty<'tcx>, - dir: RelationDir, + ambient_variance: ty::Variance, b_vid: ty::TyVid, a_is_expected: bool, ) -> RelateResult<'tcx, ()> { - use self::RelationDir::*; - // Get the actual variable that b_vid has been inferred to debug_assert!(self.infcx.inner.borrow_mut().type_variables().probe(b_vid).is_unknown()); @@ -412,7 +389,18 @@ impl<'infcx, 'tcx> CombineFields<'infcx, 'tcx> { // `'?2` and `?3` are fresh region/type inference // variables. (Down below, we will relate `a_ty <: b_ty`, // adding constraints like `'x: '?2` and `?1 <: ?3`.) - let Generalization { ty: b_ty, needs_wf } = self.generalize(a_ty, b_vid, dir)?; + let Generalization { value: b_ty, needs_wf } = generalize::generalize( + self.infcx, + &mut CombineDelegate { + infcx: self.infcx, + param_env: self.param_env, + span: self.trace.span(), + }, + a_ty, + b_vid, + ambient_variance, + )?; + debug!(?b_ty); self.infcx.inner.borrow_mut().type_variables().instantiate(b_vid, b_ty); @@ -431,78 +419,23 @@ impl<'infcx, 'tcx> CombineFields<'infcx, 'tcx> { // relations wind up attributed to the same spans. We need // to associate causes/spans with each of the relations in // the stack to get this right. - match dir { - EqTo => self.equate(a_is_expected).relate(a_ty, b_ty), - SubtypeOf => self.sub(a_is_expected).relate(a_ty, b_ty), - SupertypeOf => self.sub(a_is_expected).relate_with_variance( + match ambient_variance { + ty::Variance::Invariant => self.equate(a_is_expected).relate(a_ty, b_ty), + ty::Variance::Covariant => self.sub(a_is_expected).relate(a_ty, b_ty), + ty::Variance::Contravariant => self.sub(a_is_expected).relate_with_variance( ty::Contravariant, ty::VarianceDiagInfo::default(), a_ty, b_ty, ), + ty::Variance::Bivariant => { + unreachable!("no code should be generalizing bivariantly (currently)") + } }?; Ok(()) } - /// Attempts to generalize `ty` for the type variable `for_vid`. - /// This checks for cycle -- that is, whether the type `ty` - /// references `for_vid`. The `dir` is the "direction" for which we - /// a performing the generalization (i.e., are we producing a type - /// that can be used as a supertype etc). - /// - /// Preconditions: - /// - /// - `for_vid` is a "root vid" - #[instrument(skip(self), level = "trace", ret)] - fn generalize( - &self, - ty: Ty<'tcx>, - for_vid: ty::TyVid, - dir: RelationDir, - ) -> RelateResult<'tcx, Generalization<'tcx>> { - // Determine the ambient variance within which `ty` appears. - // The surrounding equation is: - // - // ty [op] ty2 - // - // where `op` is either `==`, `<:`, or `:>`. This maps quite - // naturally. - let ambient_variance = match dir { - RelationDir::EqTo => ty::Invariant, - RelationDir::SubtypeOf => ty::Covariant, - RelationDir::SupertypeOf => ty::Contravariant, - }; - - trace!(?ambient_variance); - - let for_universe = match self.infcx.inner.borrow_mut().type_variables().probe(for_vid) { - v @ TypeVariableValue::Known { .. } => { - bug!("instantiating {:?} which has a known value {:?}", for_vid, v,) - } - TypeVariableValue::Unknown { universe } => universe, - }; - - trace!(?for_universe); - trace!(?self.trace); - - let mut generalize = Generalizer { - infcx: self.infcx, - cause: &self.trace.cause, - for_vid_sub_root: self.infcx.inner.borrow_mut().type_variables().sub_root_var(for_vid), - for_universe, - ambient_variance, - needs_wf: false, - root_ty: ty, - param_env: self.param_env, - cache: SsoHashMap::new(), - }; - - let ty = generalize.relate(ty, ty)?; - let needs_wf = generalize.needs_wf; - Ok(Generalization { ty, needs_wf }) - } - pub fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>) { self.obligations.extend(obligations.into_iter()); } @@ -514,313 +447,6 @@ impl<'infcx, 'tcx> CombineFields<'infcx, 'tcx> { } } -struct Generalizer<'cx, 'tcx> { - infcx: &'cx InferCtxt<'tcx>, - - /// The span, used when creating new type variables and things. - cause: &'cx ObligationCause<'tcx>, - - /// The vid of the type variable that is in the process of being - /// instantiated; if we find this within the type we are folding, - /// that means we would have created a cyclic type. - for_vid_sub_root: ty::TyVid, - - /// The universe of the type variable that is in the process of - /// being instantiated. Any fresh variables that we create in this - /// process should be in that same universe. - for_universe: ty::UniverseIndex, - - /// Track the variance as we descend into the type. - ambient_variance: ty::Variance, - - /// See the field `needs_wf` in `Generalization`. - needs_wf: bool, - - /// The root type that we are generalizing. Used when reporting cycles. - root_ty: Ty<'tcx>, - - param_env: ty::ParamEnv<'tcx>, - - cache: SsoHashMap<Ty<'tcx>, Ty<'tcx>>, -} - -/// Result from a generalization operation. This includes -/// not only the generalized type, but also a bool flag -/// indicating whether further WF checks are needed. -#[derive(Debug)] -struct Generalization<'tcx> { - ty: Ty<'tcx>, - - /// If true, then the generalized type may not be well-formed, - /// even if the source type is well-formed, so we should add an - /// additional check to enforce that it is. This arises in - /// particular around 'bivariant' type parameters that are only - /// constrained by a where-clause. As an example, imagine a type: - /// - /// struct Foo<A, B> where A: Iterator<Item = B> { - /// data: A - /// } - /// - /// here, `A` will be covariant, but `B` is - /// unconstrained. However, whatever it is, for `Foo` to be WF, it - /// must be equal to `A::Item`. If we have an input `Foo<?A, ?B>`, - /// then after generalization we will wind up with a type like - /// `Foo<?C, ?D>`. When we enforce that `Foo<?A, ?B> <: Foo<?C, - /// ?D>` (or `>:`), we will wind up with the requirement that `?A - /// <: ?C`, but no particular relationship between `?B` and `?D` - /// (after all, we do not know the variance of the normalized form - /// of `A::Item` with respect to `A`). If we do nothing else, this - /// may mean that `?D` goes unconstrained (as in #41677). So, in - /// this scenario where we create a new type variable in a - /// bivariant context, we set the `needs_wf` flag to true. This - /// will force the calling code to check that `WF(Foo<?C, ?D>)` - /// holds, which in turn implies that `?C::Item == ?D`. So once - /// `?C` is constrained, that should suffice to restrict `?D`. - needs_wf: bool, -} - -impl<'tcx> TypeRelation<'tcx> for Generalizer<'_, 'tcx> { - fn tcx(&self) -> TyCtxt<'tcx> { - self.infcx.tcx - } - - fn param_env(&self) -> ty::ParamEnv<'tcx> { - self.param_env - } - - fn tag(&self) -> &'static str { - "Generalizer" - } - - fn a_is_expected(&self) -> bool { - true - } - - fn binders<T>( - &mut self, - a: ty::Binder<'tcx, T>, - b: ty::Binder<'tcx, T>, - ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> - where - T: Relate<'tcx>, - { - Ok(a.rebind(self.relate(a.skip_binder(), b.skip_binder())?)) - } - - fn relate_item_substs( - &mut self, - item_def_id: DefId, - a_subst: SubstsRef<'tcx>, - b_subst: SubstsRef<'tcx>, - ) -> RelateResult<'tcx, SubstsRef<'tcx>> { - if self.ambient_variance == ty::Variance::Invariant { - // Avoid fetching the variance if we are in an invariant - // context; no need, and it can induce dependency cycles - // (e.g., #41849). - relate::relate_substs(self, a_subst, b_subst) - } else { - let tcx = self.tcx(); - let opt_variances = tcx.variances_of(item_def_id); - relate::relate_substs_with_variances( - self, - item_def_id, - &opt_variances, - a_subst, - b_subst, - true, - ) - } - } - - fn relate_with_variance<T: Relate<'tcx>>( - &mut self, - variance: ty::Variance, - _info: ty::VarianceDiagInfo<'tcx>, - a: T, - b: T, - ) -> RelateResult<'tcx, T> { - let old_ambient_variance = self.ambient_variance; - self.ambient_variance = self.ambient_variance.xform(variance); - - let result = self.relate(a, b); - self.ambient_variance = old_ambient_variance; - result - } - - fn tys(&mut self, t: Ty<'tcx>, t2: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { - assert_eq!(t, t2); // we are abusing TypeRelation here; both LHS and RHS ought to be == - - if let Some(&result) = self.cache.get(&t) { - return Ok(result); - } - debug!("generalize: t={:?}", t); - - // Check to see whether the type we are generalizing references - // any other type variable related to `vid` via - // subtyping. This is basically our "occurs check", preventing - // us from creating infinitely sized types. - let result = match *t.kind() { - ty::Infer(ty::TyVar(vid)) => { - let vid = self.infcx.inner.borrow_mut().type_variables().root_var(vid); - let sub_vid = self.infcx.inner.borrow_mut().type_variables().sub_root_var(vid); - if sub_vid == self.for_vid_sub_root { - // If sub-roots are equal, then `for_vid` and - // `vid` are related via subtyping. - Err(TypeError::CyclicTy(self.root_ty)) - } else { - let probe = self.infcx.inner.borrow_mut().type_variables().probe(vid); - match probe { - TypeVariableValue::Known { value: u } => { - debug!("generalize: known value {:?}", u); - self.relate(u, u) - } - TypeVariableValue::Unknown { universe } => { - match self.ambient_variance { - // Invariant: no need to make a fresh type variable. - ty::Invariant => { - if self.for_universe.can_name(universe) { - return Ok(t); - } - } - - // Bivariant: make a fresh var, but we - // may need a WF predicate. See - // comment on `needs_wf` field for - // more info. - ty::Bivariant => self.needs_wf = true, - - // Co/contravariant: this will be - // sufficiently constrained later on. - ty::Covariant | ty::Contravariant => (), - } - - let origin = - *self.infcx.inner.borrow_mut().type_variables().var_origin(vid); - let new_var_id = self - .infcx - .inner - .borrow_mut() - .type_variables() - .new_var(self.for_universe, origin); - let u = self.tcx().mk_ty_var(new_var_id); - - // Record that we replaced `vid` with `new_var_id` as part of a generalization - // operation. This is needed to detect cyclic types. To see why, see the - // docs in the `type_variables` module. - self.infcx.inner.borrow_mut().type_variables().sub(vid, new_var_id); - debug!("generalize: replacing original vid={:?} with new={:?}", vid, u); - Ok(u) - } - } - } - } - ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) => { - // No matter what mode we are in, - // integer/floating-point types must be equal to be - // relatable. - Ok(t) - } - ty::Alias(ty::Opaque, ty::AliasTy { def_id, substs, .. }) => { - let s = self.relate(substs, substs)?; - Ok(if s == substs { t } else { self.infcx.tcx.mk_opaque(def_id, s) }) - } - _ => relate::super_relate_tys(self, t, t), - }?; - - self.cache.insert(t, result); - Ok(result) - } - - fn regions( - &mut self, - r: ty::Region<'tcx>, - r2: ty::Region<'tcx>, - ) -> RelateResult<'tcx, ty::Region<'tcx>> { - assert_eq!(r, r2); // we are abusing TypeRelation here; both LHS and RHS ought to be == - - debug!("generalize: regions r={:?}", r); - - match *r { - // Never make variables for regions bound within the type itself, - // nor for erased regions. - ty::ReLateBound(..) | ty::ReErased => { - return Ok(r); - } - - ty::ReError(_) => { - return Ok(r); - } - - ty::RePlaceholder(..) - | ty::ReVar(..) - | ty::ReStatic - | ty::ReEarlyBound(..) - | ty::ReFree(..) => { - // see common code below - } - } - - // If we are in an invariant context, we can re-use the region - // as is, unless it happens to be in some universe that we - // can't name. (In the case of a region *variable*, we could - // use it if we promoted it into our universe, but we don't - // bother.) - if let ty::Invariant = self.ambient_variance { - let r_universe = self.infcx.universe_of_region(r); - if self.for_universe.can_name(r_universe) { - return Ok(r); - } - } - - // FIXME: This is non-ideal because we don't give a - // very descriptive origin for this region variable. - Ok(self.infcx.next_region_var_in_universe(MiscVariable(self.cause.span), self.for_universe)) - } - - fn consts( - &mut self, - c: ty::Const<'tcx>, - c2: ty::Const<'tcx>, - ) -> RelateResult<'tcx, ty::Const<'tcx>> { - assert_eq!(c, c2); // we are abusing TypeRelation here; both LHS and RHS ought to be == - - match c.kind() { - ty::ConstKind::Infer(InferConst::Var(vid)) => { - let mut inner = self.infcx.inner.borrow_mut(); - let variable_table = &mut inner.const_unification_table(); - let var_value = variable_table.probe_value(vid); - match var_value.val { - ConstVariableValue::Known { value: u } => { - drop(inner); - self.relate(u, u) - } - ConstVariableValue::Unknown { universe } => { - if self.for_universe.can_name(universe) { - Ok(c) - } else { - let new_var_id = variable_table.new_key(ConstVarValue { - origin: var_value.origin, - val: ConstVariableValue::Unknown { universe: self.for_universe }, - }); - Ok(self.tcx().mk_const(new_var_id, c.ty())) - } - } - } - } - ty::ConstKind::Unevaluated(ty::UnevaluatedConst { def, substs }) => { - let substs = self.relate_with_variance( - ty::Variance::Invariant, - ty::VarianceDiagInfo::default(), - substs, - substs, - )?; - Ok(self.tcx().mk_const(ty::UnevaluatedConst { def, substs }, c.ty())) - } - _ => relate::super_relate_consts(self, c, c), - } - } -} - pub trait ObligationEmittingRelation<'tcx>: TypeRelation<'tcx> { /// Register obligations that must hold in order for this relation to hold fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>); @@ -873,135 +499,3 @@ fn float_unification_error<'tcx>( let (ty::FloatVarValue(a), ty::FloatVarValue(b)) = v; TypeError::FloatMismatch(ExpectedFound::new(a_is_expected, a, b)) } - -struct ConstInferUnifier<'cx, 'tcx> { - infcx: &'cx InferCtxt<'tcx>, - - span: Span, - - for_universe: ty::UniverseIndex, - - /// The vid of the const variable that is in the process of being - /// instantiated; if we find this within the const we are folding, - /// that means we would have created a cyclic const. - target_vid: ty::ConstVid<'tcx>, -} - -impl<'tcx> FallibleTypeFolder<TyCtxt<'tcx>> for ConstInferUnifier<'_, 'tcx> { - type Error = TypeError<'tcx>; - - fn interner(&self) -> TyCtxt<'tcx> { - self.infcx.tcx - } - - #[instrument(level = "debug", skip(self), ret)] - fn try_fold_ty(&mut self, t: Ty<'tcx>) -> Result<Ty<'tcx>, TypeError<'tcx>> { - match t.kind() { - &ty::Infer(ty::TyVar(vid)) => { - let vid = self.infcx.inner.borrow_mut().type_variables().root_var(vid); - let probe = self.infcx.inner.borrow_mut().type_variables().probe(vid); - match probe { - TypeVariableValue::Known { value: u } => { - debug!("ConstOccursChecker: known value {:?}", u); - u.try_fold_with(self) - } - TypeVariableValue::Unknown { universe } => { - if self.for_universe.can_name(universe) { - return Ok(t); - } - - let origin = - *self.infcx.inner.borrow_mut().type_variables().var_origin(vid); - let new_var_id = self - .infcx - .inner - .borrow_mut() - .type_variables() - .new_var(self.for_universe, origin); - Ok(self.interner().mk_ty_var(new_var_id)) - } - } - } - ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) => Ok(t), - _ => t.try_super_fold_with(self), - } - } - - #[instrument(level = "debug", skip(self), ret)] - fn try_fold_region( - &mut self, - r: ty::Region<'tcx>, - ) -> Result<ty::Region<'tcx>, TypeError<'tcx>> { - debug!("ConstInferUnifier: r={:?}", r); - - match *r { - // Never make variables for regions bound within the type itself, - // nor for erased regions. - ty::ReLateBound(..) | ty::ReErased | ty::ReError(_) => { - return Ok(r); - } - - ty::RePlaceholder(..) - | ty::ReVar(..) - | ty::ReStatic - | ty::ReEarlyBound(..) - | ty::ReFree(..) => { - // see common code below - } - } - - let r_universe = self.infcx.universe_of_region(r); - if self.for_universe.can_name(r_universe) { - return Ok(r); - } else { - // FIXME: This is non-ideal because we don't give a - // very descriptive origin for this region variable. - Ok(self.infcx.next_region_var_in_universe(MiscVariable(self.span), self.for_universe)) - } - } - - #[instrument(level = "debug", skip(self), ret)] - fn try_fold_const(&mut self, c: ty::Const<'tcx>) -> Result<ty::Const<'tcx>, TypeError<'tcx>> { - match c.kind() { - ty::ConstKind::Infer(InferConst::Var(vid)) => { - // Check if the current unification would end up - // unifying `target_vid` with a const which contains - // an inference variable which is unioned with `target_vid`. - // - // Not doing so can easily result in stack overflows. - if self - .infcx - .inner - .borrow_mut() - .const_unification_table() - .unioned(self.target_vid, vid) - { - return Err(TypeError::CyclicConst(c)); - } - - let var_value = - self.infcx.inner.borrow_mut().const_unification_table().probe_value(vid); - match var_value.val { - ConstVariableValue::Known { value: u } => u.try_fold_with(self), - ConstVariableValue::Unknown { universe } => { - if self.for_universe.can_name(universe) { - Ok(c) - } else { - let new_var_id = - self.infcx.inner.borrow_mut().const_unification_table().new_key( - ConstVarValue { - origin: var_value.origin, - val: ConstVariableValue::Unknown { - universe: self.for_universe, - }, - }, - ); - Ok(self.interner().mk_const(new_var_id, c.ty())) - } - } - } - } - _ => c.try_super_fold_with(self), - } - } -} diff --git a/compiler/rustc_infer/src/infer/equate.rs b/compiler/rustc_infer/src/infer/equate.rs index f90f7674b55..793505e4ab2 100644 --- a/compiler/rustc_infer/src/infer/equate.rs +++ b/compiler/rustc_infer/src/infer/equate.rs @@ -1,7 +1,7 @@ use crate::infer::DefineOpaqueTypes; use crate::traits::PredicateObligations; -use super::combine::{CombineFields, ObligationEmittingRelation, RelationDir}; +use super::combine::{CombineFields, ObligationEmittingRelation}; use super::Subtype; use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation}; @@ -88,11 +88,11 @@ impl<'tcx> TypeRelation<'tcx> for Equate<'_, '_, 'tcx> { } (&ty::Infer(TyVar(a_id)), _) => { - self.fields.instantiate(b, RelationDir::EqTo, a_id, self.a_is_expected)?; + self.fields.instantiate(b, ty::Invariant, a_id, self.a_is_expected)?; } (_, &ty::Infer(TyVar(b_id))) => { - self.fields.instantiate(a, RelationDir::EqTo, b_id, self.a_is_expected)?; + self.fields.instantiate(a, ty::Invariant, b_id, self.a_is_expected)?; } ( diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs index ce70f39cc40..ad4f5058b5e 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs @@ -2723,7 +2723,7 @@ impl<'tcx> TypeRelation<'tcx> for SameTypeModuloInfer<'_, 'tcx> { | (ty::Infer(ty::InferTy::TyVar(_)), _) | (_, ty::Infer(ty::InferTy::TyVar(_))) => Ok(a), (ty::Infer(_), _) | (_, ty::Infer(_)) => Err(TypeError::Mismatch), - _ => relate::super_relate_tys(self, a, b), + _ => relate::structurally_relate_tys(self, a, b), } } diff --git a/compiler/rustc_infer/src/infer/generalize.rs b/compiler/rustc_infer/src/infer/generalize.rs new file mode 100644 index 00000000000..d4a1dacde10 --- /dev/null +++ b/compiler/rustc_infer/src/infer/generalize.rs @@ -0,0 +1,479 @@ +use rustc_data_structures::sso::SsoHashMap; +use rustc_hir::def_id::DefId; +use rustc_middle::infer::unify_key::{ConstVarValue, ConstVariableValue}; +use rustc_middle::ty::error::TypeError; +use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation}; +use rustc_middle::ty::{self, InferConst, Term, Ty, TyCtxt, TypeVisitableExt}; +use rustc_span::Span; + +use crate::infer::nll_relate::TypeRelatingDelegate; +use crate::infer::type_variable::TypeVariableValue; +use crate::infer::{InferCtxt, RegionVariableOrigin}; + +/// Attempts to generalize `term` for the type variable `for_vid`. +/// This checks for cycles -- that is, whether the type `term` +/// references `for_vid`. +pub(super) fn generalize<'tcx, D: GeneralizerDelegate<'tcx>, T: Into<Term<'tcx>> + Relate<'tcx>>( + infcx: &InferCtxt<'tcx>, + delegate: &mut D, + term: T, + for_vid: impl Into<ty::TermVid<'tcx>>, + ambient_variance: ty::Variance, +) -> RelateResult<'tcx, Generalization<T>> { + let (for_universe, root_vid) = match for_vid.into() { + ty::TermVid::Ty(ty_vid) => ( + infcx.probe_ty_var(ty_vid).unwrap_err(), + ty::TermVid::Ty(infcx.inner.borrow_mut().type_variables().sub_root_var(ty_vid)), + ), + ty::TermVid::Const(ct_vid) => ( + infcx.probe_const_var(ct_vid).unwrap_err(), + ty::TermVid::Const(infcx.inner.borrow_mut().const_unification_table().find(ct_vid)), + ), + }; + + let mut generalizer = Generalizer { + infcx, + delegate, + ambient_variance, + root_vid, + for_universe, + root_term: term.into(), + needs_wf: false, + cache: Default::default(), + }; + + assert!(!term.has_escaping_bound_vars()); + let value = generalizer.relate(term, term)?; + let needs_wf = generalizer.needs_wf; + Ok(Generalization { value, needs_wf }) +} + +/// Abstracts the handling of region vars between HIR and MIR/NLL typechecking +/// in the generalizer code. +pub trait GeneralizerDelegate<'tcx> { + fn param_env(&self) -> ty::ParamEnv<'tcx>; + + fn forbid_inference_vars() -> bool; + + fn generalize_region(&mut self, universe: ty::UniverseIndex) -> ty::Region<'tcx>; +} + +pub struct CombineDelegate<'cx, 'tcx> { + pub infcx: &'cx InferCtxt<'tcx>, + pub param_env: ty::ParamEnv<'tcx>, + pub span: Span, +} + +impl<'tcx> GeneralizerDelegate<'tcx> for CombineDelegate<'_, 'tcx> { + fn param_env(&self) -> ty::ParamEnv<'tcx> { + self.param_env + } + + fn forbid_inference_vars() -> bool { + false + } + + fn generalize_region(&mut self, universe: ty::UniverseIndex) -> ty::Region<'tcx> { + // FIXME: This is non-ideal because we don't give a + // very descriptive origin for this region variable. + self.infcx + .next_region_var_in_universe(RegionVariableOrigin::MiscVariable(self.span), universe) + } +} + +impl<'tcx, T> GeneralizerDelegate<'tcx> for T +where + T: TypeRelatingDelegate<'tcx>, +{ + fn param_env(&self) -> ty::ParamEnv<'tcx> { + <Self as TypeRelatingDelegate<'tcx>>::param_env(self) + } + + fn forbid_inference_vars() -> bool { + <Self as TypeRelatingDelegate<'tcx>>::forbid_inference_vars() + } + + fn generalize_region(&mut self, universe: ty::UniverseIndex) -> ty::Region<'tcx> { + <Self as TypeRelatingDelegate<'tcx>>::generalize_existential(self, universe) + } +} + +/// The "generalizer" is used when handling inference variables. +/// +/// The basic strategy for handling a constraint like `?A <: B` is to +/// apply a "generalization strategy" to the term `B` -- this replaces +/// all the lifetimes in the term `B` with fresh inference variables. +/// (You can read more about the strategy in this [blog post].) +/// +/// As an example, if we had `?A <: &'x u32`, we would generalize `&'x +/// u32` to `&'0 u32` where `'0` is a fresh variable. This becomes the +/// value of `A`. Finally, we relate `&'0 u32 <: &'x u32`, which +/// establishes `'0: 'x` as a constraint. +/// +/// [blog post]: https://is.gd/0hKvIr +struct Generalizer<'me, 'tcx, D> { + infcx: &'me InferCtxt<'tcx>, + + /// This is used to abstract the behaviors of the three previous + /// generalizer-like implementations (`Generalizer`, `TypeGeneralizer`, + /// and `ConstInferUnifier`). See [`GeneralizerDelegate`] for more + /// information. + delegate: &'me mut D, + + /// After we generalize this type, we are going to relate it to + /// some other type. What will be the variance at this point? + ambient_variance: ty::Variance, + + /// The vid of the type variable that is in the process of being + /// instantiated. If we find this within the value we are folding, + /// that means we would have created a cyclic value. + root_vid: ty::TermVid<'tcx>, + + /// The universe of the type variable that is in the process of being + /// instantiated. If we find anything that this universe cannot name, + /// we reject the relation. + for_universe: ty::UniverseIndex, + + /// The root term (const or type) we're generalizing. Used for cycle errors. + root_term: Term<'tcx>, + + cache: SsoHashMap<Ty<'tcx>, Ty<'tcx>>, + + /// See the field `needs_wf` in `Generalization`. + needs_wf: bool, +} + +impl<'tcx, D> Generalizer<'_, 'tcx, D> { + /// Create an error that corresponds to the term kind in `root_term` + fn cyclic_term_error(&self) -> TypeError<'tcx> { + match self.root_term.unpack() { + ty::TermKind::Ty(ty) => TypeError::CyclicTy(ty), + ty::TermKind::Const(ct) => TypeError::CyclicConst(ct), + } + } +} + +impl<'tcx, D> TypeRelation<'tcx> for Generalizer<'_, 'tcx, D> +where + D: GeneralizerDelegate<'tcx>, +{ + fn tcx(&self) -> TyCtxt<'tcx> { + self.infcx.tcx + } + + fn param_env(&self) -> ty::ParamEnv<'tcx> { + self.delegate.param_env() + } + + fn tag(&self) -> &'static str { + "Generalizer" + } + + fn a_is_expected(&self) -> bool { + true + } + + fn relate_item_substs( + &mut self, + item_def_id: DefId, + a_subst: ty::SubstsRef<'tcx>, + b_subst: ty::SubstsRef<'tcx>, + ) -> RelateResult<'tcx, ty::SubstsRef<'tcx>> { + if self.ambient_variance == ty::Variance::Invariant { + // Avoid fetching the variance if we are in an invariant + // context; no need, and it can induce dependency cycles + // (e.g., #41849). + relate::relate_substs(self, a_subst, b_subst) + } else { + let tcx = self.tcx(); + let opt_variances = tcx.variances_of(item_def_id); + relate::relate_substs_with_variances( + self, + item_def_id, + opt_variances, + a_subst, + b_subst, + true, + ) + } + } + + #[instrument(level = "debug", skip(self, variance, b), ret)] + fn relate_with_variance<T: Relate<'tcx>>( + &mut self, + variance: ty::Variance, + _info: ty::VarianceDiagInfo<'tcx>, + a: T, + b: T, + ) -> RelateResult<'tcx, T> { + let old_ambient_variance = self.ambient_variance; + self.ambient_variance = self.ambient_variance.xform(variance); + debug!(?self.ambient_variance, "new ambient variance"); + let r = self.relate(a, b)?; + self.ambient_variance = old_ambient_variance; + Ok(r) + } + + #[instrument(level = "debug", skip(self, t2), ret)] + fn tys(&mut self, t: Ty<'tcx>, t2: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { + assert_eq!(t, t2); // we are misusing TypeRelation here; both LHS and RHS ought to be == + + if let Some(&result) = self.cache.get(&t) { + return Ok(result); + } + + // Check to see whether the type we are generalizing references + // any other type variable related to `vid` via + // subtyping. This is basically our "occurs check", preventing + // us from creating infinitely sized types. + let g = match *t.kind() { + ty::Infer(ty::TyVar(_)) | ty::Infer(ty::IntVar(_)) | ty::Infer(ty::FloatVar(_)) + if D::forbid_inference_vars() => + { + bug!("unexpected inference variable encountered in NLL generalization: {t}"); + } + + ty::Infer(ty::FreshTy(_) | ty::FreshIntTy(_) | ty::FreshFloatTy(_)) => { + bug!("unexpected infer type: {t}") + } + + ty::Infer(ty::TyVar(vid)) => { + let mut inner = self.infcx.inner.borrow_mut(); + let vid = inner.type_variables().root_var(vid); + let sub_vid = inner.type_variables().sub_root_var(vid); + + if ty::TermVid::Ty(sub_vid) == self.root_vid { + // If sub-roots are equal, then `root_vid` and + // `vid` are related via subtyping. + Err(self.cyclic_term_error()) + } else { + let probe = inner.type_variables().probe(vid); + match probe { + TypeVariableValue::Known { value: u } => { + drop(inner); + self.relate(u, u) + } + TypeVariableValue::Unknown { universe } => { + match self.ambient_variance { + // Invariant: no need to make a fresh type variable + // if we can name the universe. + ty::Invariant => { + if self.for_universe.can_name(universe) { + return Ok(t); + } + } + + // Bivariant: make a fresh var, but we + // may need a WF predicate. See + // comment on `needs_wf` field for + // more info. + ty::Bivariant => self.needs_wf = true, + + // Co/contravariant: this will be + // sufficiently constrained later on. + ty::Covariant | ty::Contravariant => (), + } + + let origin = *inner.type_variables().var_origin(vid); + let new_var_id = + inner.type_variables().new_var(self.for_universe, origin); + let u = self.tcx().mk_ty_var(new_var_id); + + // Record that we replaced `vid` with `new_var_id` as part of a generalization + // operation. This is needed to detect cyclic types. To see why, see the + // docs in the `type_variables` module. + inner.type_variables().sub(vid, new_var_id); + debug!("replacing original vid={:?} with new={:?}", vid, u); + Ok(u) + } + } + } + } + + ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) => { + // No matter what mode we are in, + // integer/floating-point types must be equal to be + // relatable. + Ok(t) + } + + ty::Placeholder(placeholder) => { + if self.for_universe.can_name(placeholder.universe) { + Ok(t) + } else { + debug!( + "root universe {:?} cannot name placeholder in universe {:?}", + self.for_universe, placeholder.universe + ); + Err(TypeError::Mismatch) + } + } + + _ => relate::structurally_relate_tys(self, t, t), + }?; + + self.cache.insert(t, g); + Ok(g) + } + + #[instrument(level = "debug", skip(self, r2), ret)] + fn regions( + &mut self, + r: ty::Region<'tcx>, + r2: ty::Region<'tcx>, + ) -> RelateResult<'tcx, ty::Region<'tcx>> { + assert_eq!(r, r2); // we are misusing TypeRelation here; both LHS and RHS ought to be == + + match *r { + // Never make variables for regions bound within the type itself, + // nor for erased regions. + ty::ReLateBound(..) | ty::ReErased => { + return Ok(r); + } + + // It doesn't really matter for correctness if we generalize ReError, + // since we're already on a doomed compilation path. + ty::ReError(_) => { + return Ok(r); + } + + ty::RePlaceholder(..) + | ty::ReVar(..) + | ty::ReStatic + | ty::ReEarlyBound(..) + | ty::ReFree(..) => { + // see common code below + } + } + + // If we are in an invariant context, we can re-use the region + // as is, unless it happens to be in some universe that we + // can't name. + if let ty::Invariant = self.ambient_variance { + let r_universe = self.infcx.universe_of_region(r); + if self.for_universe.can_name(r_universe) { + return Ok(r); + } + } + + Ok(self.delegate.generalize_region(self.for_universe)) + } + + #[instrument(level = "debug", skip(self, c2), ret)] + fn consts( + &mut self, + c: ty::Const<'tcx>, + c2: ty::Const<'tcx>, + ) -> RelateResult<'tcx, ty::Const<'tcx>> { + assert_eq!(c, c2); // we are misusing TypeRelation here; both LHS and RHS ought to be == + + match c.kind() { + ty::ConstKind::Infer(InferConst::Var(_)) if D::forbid_inference_vars() => { + bug!("unexpected inference variable encountered in NLL generalization: {:?}", c); + } + ty::ConstKind::Infer(InferConst::Var(vid)) => { + // If root const vids are equal, then `root_vid` and + // `vid` are related and we'd be inferring an infinitely + // deep const. + if ty::TermVid::Const( + self.infcx.inner.borrow_mut().const_unification_table().find(vid), + ) == self.root_vid + { + return Err(self.cyclic_term_error()); + } + + let mut inner = self.infcx.inner.borrow_mut(); + let variable_table = &mut inner.const_unification_table(); + let var_value = variable_table.probe_value(vid); + match var_value.val { + ConstVariableValue::Known { value: u } => { + drop(inner); + self.relate(u, u) + } + ConstVariableValue::Unknown { universe } => { + if self.for_universe.can_name(universe) { + Ok(c) + } else { + let new_var_id = variable_table.new_key(ConstVarValue { + origin: var_value.origin, + val: ConstVariableValue::Unknown { universe: self.for_universe }, + }); + Ok(self.tcx().mk_const(new_var_id, c.ty())) + } + } + } + } + // FIXME: remove this branch once `structurally_relate_consts` is fully + // structural. + ty::ConstKind::Unevaluated(ty::UnevaluatedConst { def, substs }) => { + let substs = self.relate_with_variance( + ty::Variance::Invariant, + ty::VarianceDiagInfo::default(), + substs, + substs, + )?; + Ok(self.tcx().mk_const(ty::UnevaluatedConst { def, substs }, c.ty())) + } + ty::ConstKind::Placeholder(placeholder) => { + if self.for_universe.can_name(placeholder.universe) { + Ok(c) + } else { + debug!( + "root universe {:?} cannot name placeholder in universe {:?}", + self.for_universe, placeholder.universe + ); + Err(TypeError::Mismatch) + } + } + _ => relate::structurally_relate_consts(self, c, c), + } + } + + #[instrument(level = "debug", skip(self), ret)] + fn binders<T>( + &mut self, + a: ty::Binder<'tcx, T>, + _: ty::Binder<'tcx, T>, + ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> + where + T: Relate<'tcx>, + { + let result = self.relate(a.skip_binder(), a.skip_binder())?; + Ok(a.rebind(result)) + } +} + +/// Result from a generalization operation. This includes +/// not only the generalized type, but also a bool flag +/// indicating whether further WF checks are needed. +#[derive(Debug)] +pub struct Generalization<T> { + pub value: T, + + /// If true, then the generalized type may not be well-formed, + /// even if the source type is well-formed, so we should add an + /// additional check to enforce that it is. This arises in + /// particular around 'bivariant' type parameters that are only + /// constrained by a where-clause. As an example, imagine a type: + /// + /// struct Foo<A, B> where A: Iterator<Item = B> { + /// data: A + /// } + /// + /// here, `A` will be covariant, but `B` is + /// unconstrained. However, whatever it is, for `Foo` to be WF, it + /// must be equal to `A::Item`. If we have an input `Foo<?A, ?B>`, + /// then after generalization we will wind up with a type like + /// `Foo<?C, ?D>`. When we enforce that `Foo<?A, ?B> <: Foo<?C, + /// ?D>` (or `>:`), we will wind up with the requirement that `?A + /// <: ?C`, but no particular relationship between `?B` and `?D` + /// (after all, we do not know the variance of the normalized form + /// of `A::Item` with respect to `A`). If we do nothing else, this + /// may mean that `?D` goes unconstrained (as in #41677). So, in + /// this scenario where we create a new type variable in a + /// bivariant context, we set the `needs_wf` flag to true. This + /// will force the calling code to check that `WF(Foo<?C, ?D>)` + /// holds, which in turn implies that `?C::Item == ?D`. So once + /// `?C` is constrained, that should suffice to restrict `?D`. + pub needs_wf: bool, +} diff --git a/compiler/rustc_infer/src/infer/mod.rs b/compiler/rustc_infer/src/infer/mod.rs index 9a95a9c8375..f8329965c43 100644 --- a/compiler/rustc_infer/src/infer/mod.rs +++ b/compiler/rustc_infer/src/infer/mod.rs @@ -58,6 +58,7 @@ pub mod error_reporting; pub mod free_regions; mod freshen; mod fudge; +mod generalize; mod glb; mod higher_ranked; pub mod lattice; @@ -1533,7 +1534,7 @@ impl<'tcx> InferCtxt<'tcx> { if let Some(ct) = tcx.thir_abstract_const(unevaluated.def)? { let ct = tcx.expand_abstract_consts(ct.subst(tcx, substs)); if let Err(e) = ct.error_reported() { - return Err(ErrorHandled::Reported(e)); + return Err(ErrorHandled::Reported(e.into())); } else if ct.has_non_region_infer() || ct.has_non_region_param() { return Err(ErrorHandled::TooGeneric); } else { diff --git a/compiler/rustc_infer/src/infer/nll_relate/mod.rs b/compiler/rustc_infer/src/infer/nll_relate/mod.rs index 9c139d17c18..4ae6af5f5be 100644 --- a/compiler/rustc_infer/src/infer/nll_relate/mod.rs +++ b/compiler/rustc_infer/src/infer/nll_relate/mod.rs @@ -21,21 +21,20 @@ //! thing we relate in chalk are basically domain goals and their //! constituents) -use crate::infer::InferCtxt; -use crate::infer::{ConstVarValue, ConstVariableValue}; -use crate::infer::{TypeVariableOrigin, TypeVariableOriginKind}; -use crate::traits::{Obligation, PredicateObligations}; use rustc_data_structures::fx::FxHashMap; use rustc_middle::traits::ObligationCause; -use rustc_middle::ty::error::TypeError; use rustc_middle::ty::fold::FnMutDelegate; -use rustc_middle::ty::relate::{self, Relate, RelateResult, TypeRelation}; +use rustc_middle::ty::relate::{Relate, RelateResult, TypeRelation}; use rustc_middle::ty::visit::TypeVisitableExt; use rustc_middle::ty::{self, InferConst, Ty, TyCtxt}; use rustc_span::{Span, Symbol}; use std::fmt::Debug; -use super::combine::ObligationEmittingRelation; +use crate::infer::combine::ObligationEmittingRelation; +use crate::infer::generalize::{self, Generalization}; +use crate::infer::InferCtxt; +use crate::infer::{TypeVariableOrigin, TypeVariableOriginKind}; +use crate::traits::{Obligation, PredicateObligations}; pub struct TypeRelating<'me, 'tcx, D> where @@ -198,7 +197,7 @@ where _ => (), } - let generalized_ty = self.generalize_value(value_ty, vid)?; + let generalized_ty = self.generalize(value_ty, vid)?; debug!("relate_ty_var: generalized_ty = {:?}", generalized_ty); if D::forbid_inference_vars() { @@ -217,26 +216,15 @@ where result } - fn generalize_value<T: Relate<'tcx>>( - &mut self, - value: T, - for_vid: ty::TyVid, - ) -> RelateResult<'tcx, T> { - let universe = self.infcx.probe_ty_var(for_vid).unwrap_err(); - - if value.has_escaping_bound_vars() { - bug!("trying to instantiate {for_vid:?} with escaping bound vars: {value:?}"); - } - - let mut generalizer = TypeGeneralizer { - infcx: self.infcx, - delegate: &mut self.delegate, - ambient_variance: self.ambient_variance, - for_vid_sub_root: self.infcx.inner.borrow_mut().type_variables().sub_root_var(for_vid), - universe, - }; - - generalizer.relate(value, value) + fn generalize(&mut self, ty: Ty<'tcx>, for_vid: ty::TyVid) -> RelateResult<'tcx, Ty<'tcx>> { + let Generalization { value: ty, needs_wf: _ } = generalize::generalize( + self.infcx, + &mut self.delegate, + ty, + for_vid, + self.ambient_variance, + )?; + Ok(ty) } fn relate_opaques(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { @@ -716,235 +704,3 @@ where })]); } } - -/// The "type generalizer" is used when handling inference variables. -/// -/// The basic strategy for handling a constraint like `?A <: B` is to -/// apply a "generalization strategy" to the type `B` -- this replaces -/// all the lifetimes in the type `B` with fresh inference -/// variables. (You can read more about the strategy in this [blog -/// post].) -/// -/// As an example, if we had `?A <: &'x u32`, we would generalize `&'x -/// u32` to `&'0 u32` where `'0` is a fresh variable. This becomes the -/// value of `A`. Finally, we relate `&'0 u32 <: &'x u32`, which -/// establishes `'0: 'x` as a constraint. -/// -/// [blog post]: https://is.gd/0hKvIr -struct TypeGeneralizer<'me, 'tcx, D> -where - D: TypeRelatingDelegate<'tcx>, -{ - infcx: &'me InferCtxt<'tcx>, - - delegate: &'me mut D, - - /// After we generalize this type, we are going to relate it to - /// some other type. What will be the variance at this point? - ambient_variance: ty::Variance, - - /// The vid of the type variable that is in the process of being - /// instantiated. If we find this within the value we are folding, - /// that means we would have created a cyclic value. - for_vid_sub_root: ty::TyVid, - - /// The universe of the type variable that is in the process of being - /// instantiated. If we find anything that this universe cannot name, - /// we reject the relation. - universe: ty::UniverseIndex, -} - -impl<'tcx, D> TypeRelation<'tcx> for TypeGeneralizer<'_, 'tcx, D> -where - D: TypeRelatingDelegate<'tcx>, -{ - fn tcx(&self) -> TyCtxt<'tcx> { - self.infcx.tcx - } - - fn param_env(&self) -> ty::ParamEnv<'tcx> { - self.delegate.param_env() - } - - fn tag(&self) -> &'static str { - "nll::generalizer" - } - - fn a_is_expected(&self) -> bool { - true - } - - fn relate_with_variance<T: Relate<'tcx>>( - &mut self, - variance: ty::Variance, - _info: ty::VarianceDiagInfo<'tcx>, - a: T, - b: T, - ) -> RelateResult<'tcx, T> { - debug!( - "TypeGeneralizer::relate_with_variance(variance={:?}, a={:?}, b={:?})", - variance, a, b - ); - - let old_ambient_variance = self.ambient_variance; - self.ambient_variance = self.ambient_variance.xform(variance); - - debug!( - "TypeGeneralizer::relate_with_variance: ambient_variance = {:?}", - self.ambient_variance - ); - - let r = self.relate(a, b)?; - - self.ambient_variance = old_ambient_variance; - - debug!("TypeGeneralizer::relate_with_variance: r={:?}", r); - - Ok(r) - } - - fn tys(&mut self, a: Ty<'tcx>, _: Ty<'tcx>) -> RelateResult<'tcx, Ty<'tcx>> { - use crate::infer::type_variable::TypeVariableValue; - - debug!("TypeGeneralizer::tys(a={:?})", a); - - match *a.kind() { - ty::Infer(ty::TyVar(_)) | ty::Infer(ty::IntVar(_)) | ty::Infer(ty::FloatVar(_)) - if D::forbid_inference_vars() => - { - bug!("unexpected inference variable encountered in NLL generalization: {:?}", a); - } - - ty::Infer(ty::TyVar(vid)) => { - let mut inner = self.infcx.inner.borrow_mut(); - let variables = &mut inner.type_variables(); - let vid = variables.root_var(vid); - let sub_vid = variables.sub_root_var(vid); - if sub_vid == self.for_vid_sub_root { - // If sub-roots are equal, then `for_vid` and - // `vid` are related via subtyping. - debug!("TypeGeneralizer::tys: occurs check failed"); - Err(TypeError::Mismatch) - } else { - match variables.probe(vid) { - TypeVariableValue::Known { value: u } => { - drop(inner); - self.relate(u, u) - } - TypeVariableValue::Unknown { universe: _universe } => { - if self.ambient_variance == ty::Bivariant { - // FIXME: we may need a WF predicate (related to #54105). - } - - let origin = *variables.var_origin(vid); - - // Replacing with a new variable in the universe `self.universe`, - // it will be unified later with the original type variable in - // the universe `_universe`. - let new_var_id = variables.new_var(self.universe, origin); - - let u = self.tcx().mk_ty_var(new_var_id); - debug!("generalize: replacing original vid={:?} with new={:?}", vid, u); - Ok(u) - } - } - } - } - - ty::Infer(ty::IntVar(_) | ty::FloatVar(_)) => { - // No matter what mode we are in, - // integer/floating-point types must be equal to be - // relatable. - Ok(a) - } - - ty::Placeholder(placeholder) => { - if self.universe.cannot_name(placeholder.universe) { - debug!( - "TypeGeneralizer::tys: root universe {:?} cannot name\ - placeholder in universe {:?}", - self.universe, placeholder.universe - ); - Err(TypeError::Mismatch) - } else { - Ok(a) - } - } - - _ => relate::super_relate_tys(self, a, a), - } - } - - fn regions( - &mut self, - a: ty::Region<'tcx>, - _: ty::Region<'tcx>, - ) -> RelateResult<'tcx, ty::Region<'tcx>> { - debug!("TypeGeneralizer::regions(a={:?})", a); - - if let ty::ReLateBound(..) = *a { - return Ok(a); - } - - // For now, we just always create a fresh region variable to - // replace all the regions in the source type. In the main - // type checker, we special case the case where the ambient - // variance is `Invariant` and try to avoid creating a fresh - // region variable, but since this comes up so much less in - // NLL (only when users use `_` etc) it is much less - // important. - // - // As an aside, since these new variables are created in - // `self.universe` universe, this also serves to enforce the - // universe scoping rules. - // - // FIXME(#54105) -- if the ambient variance is bivariant, - // though, we may however need to check well-formedness or - // risk a problem like #41677 again. - let replacement_region_vid = self.delegate.generalize_existential(self.universe); - - Ok(replacement_region_vid) - } - - fn consts( - &mut self, - a: ty::Const<'tcx>, - _: ty::Const<'tcx>, - ) -> RelateResult<'tcx, ty::Const<'tcx>> { - match a.kind() { - ty::ConstKind::Infer(InferConst::Var(_)) if D::forbid_inference_vars() => { - bug!("unexpected inference variable encountered in NLL generalization: {:?}", a); - } - ty::ConstKind::Infer(InferConst::Var(vid)) => { - let mut inner = self.infcx.inner.borrow_mut(); - let variable_table = &mut inner.const_unification_table(); - let var_value = variable_table.probe_value(vid); - match var_value.val.known() { - Some(u) => self.relate(u, u), - None => { - let new_var_id = variable_table.new_key(ConstVarValue { - origin: var_value.origin, - val: ConstVariableValue::Unknown { universe: self.universe }, - }); - Ok(self.tcx().mk_const(new_var_id, a.ty())) - } - } - } - ty::ConstKind::Unevaluated(..) if self.tcx().lazy_normalization() => Ok(a), - _ => relate::super_relate_consts(self, a, a), - } - } - - fn binders<T>( - &mut self, - a: ty::Binder<'tcx, T>, - _: ty::Binder<'tcx, T>, - ) -> RelateResult<'tcx, ty::Binder<'tcx, T>> - where - T: Relate<'tcx>, - { - debug!("TypeGeneralizer::binders(a={:?})", a); - let result = self.relate(a.skip_binder(), a.skip_binder())?; - Ok(a.rebind(result)) - } -} diff --git a/compiler/rustc_infer/src/infer/outlives/test_type_match.rs b/compiler/rustc_infer/src/infer/outlives/test_type_match.rs index 75ce0f83fd6..cd2462d3c31 100644 --- a/compiler/rustc_infer/src/infer/outlives/test_type_match.rs +++ b/compiler/rustc_infer/src/infer/outlives/test_type_match.rs @@ -187,7 +187,7 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> { } else if pattern == value { Ok(pattern) } else { - relate::super_relate_tys(self, pattern, value) + relate::structurally_relate_tys(self, pattern, value) } } @@ -201,7 +201,7 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> { if pattern == value { Ok(pattern) } else { - relate::super_relate_consts(self, pattern, value) + relate::structurally_relate_consts(self, pattern, value) } } diff --git a/compiler/rustc_infer/src/infer/sub.rs b/compiler/rustc_infer/src/infer/sub.rs index 3766c250a9c..e0f29a8de8f 100644 --- a/compiler/rustc_infer/src/infer/sub.rs +++ b/compiler/rustc_infer/src/infer/sub.rs @@ -1,4 +1,4 @@ -use super::combine::{CombineFields, RelationDir}; +use super::combine::CombineFields; use super::{DefineOpaqueTypes, ObligationEmittingRelation, SubregionOrigin}; use crate::traits::{Obligation, PredicateObligations}; @@ -108,11 +108,11 @@ impl<'tcx> TypeRelation<'tcx> for Sub<'_, '_, 'tcx> { Ok(a) } (&ty::Infer(TyVar(a_id)), _) => { - self.fields.instantiate(b, RelationDir::SupertypeOf, a_id, !self.a_is_expected)?; + self.fields.instantiate(b, ty::Contravariant, a_id, !self.a_is_expected)?; Ok(a) } (_, &ty::Infer(TyVar(b_id))) => { - self.fields.instantiate(a, RelationDir::SubtypeOf, b_id, self.a_is_expected)?; + self.fields.instantiate(a, ty::Covariant, b_id, self.a_is_expected)?; Ok(a) } diff --git a/compiler/rustc_interface/src/interface.rs b/compiler/rustc_interface/src/interface.rs index 4a2ca85060a..c9e857141c9 100644 --- a/compiler/rustc_interface/src/interface.rs +++ b/compiler/rustc_interface/src/interface.rs @@ -9,6 +9,7 @@ use rustc_data_structures::OnDrop; use rustc_errors::registry::Registry; use rustc_errors::{ErrorGuaranteed, Handler}; use rustc_lint::LintStore; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_middle::{bug, ty}; use rustc_parse::maybe_new_parser_from_source_str; use rustc_query_impl::QueryCtxt; @@ -37,8 +38,7 @@ pub struct Compiler { pub(crate) sess: Lrc<Session>, codegen_backend: Lrc<Box<dyn CodegenBackend>>, pub(crate) register_lints: Option<Box<dyn Fn(&Session, &mut LintStore) + Send + Sync>>, - pub(crate) override_queries: - Option<fn(&Session, &mut ty::query::Providers, &mut ty::query::ExternProviders)>, + pub(crate) override_queries: Option<fn(&Session, &mut Providers, &mut ExternProviders)>, } impl Compiler { @@ -275,8 +275,7 @@ pub struct Config { /// the list of queries. /// /// The second parameter is local providers and the third parameter is external providers. - pub override_queries: - Option<fn(&Session, &mut ty::query::Providers, &mut ty::query::ExternProviders)>, + pub override_queries: Option<fn(&Session, &mut Providers, &mut ExternProviders)>, /// This is a callback from the driver that is called to create a codegen backend. pub make_codegen_backend: diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs index d3af01474b8..cb10916abb1 100644 --- a/compiler/rustc_interface/src/passes.rs +++ b/compiler/rustc_interface/src/passes.rs @@ -17,7 +17,7 @@ use rustc_lint::{unerased_lint_store, BufferedEarlyLint, EarlyCheckNode, LintSto use rustc_metadata::creader::CStore; use rustc_middle::arena::Arena; use rustc_middle::dep_graph::DepGraph; -use rustc_middle::ty::query::{ExternProviders, Providers}; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_middle::ty::{self, GlobalCtxt, RegisteredTools, TyCtxt}; use rustc_mir_build as mir_build; use rustc_parse::{parse_crate_from_file, parse_crate_from_source_str, validate_attr}; diff --git a/compiler/rustc_interface/src/proc_macro_decls.rs b/compiler/rustc_interface/src/proc_macro_decls.rs index 1c58caa0353..2c8014d8b3a 100644 --- a/compiler/rustc_interface/src/proc_macro_decls.rs +++ b/compiler/rustc_interface/src/proc_macro_decls.rs @@ -1,6 +1,6 @@ use rustc_ast::attr; use rustc_hir::def_id::LocalDefId; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_span::symbol::sym; diff --git a/compiler/rustc_lexer/src/lib.rs b/compiler/rustc_lexer/src/lib.rs index c07dc19a0ac..d511d2b1280 100644 --- a/compiler/rustc_lexer/src/lib.rs +++ b/compiler/rustc_lexer/src/lib.rs @@ -582,34 +582,38 @@ impl Cursor<'_> { let mut base = Base::Decimal; if first_digit == '0' { // Attempt to parse encoding base. - let has_digits = match self.first() { + match self.first() { 'b' => { base = Base::Binary; self.bump(); - self.eat_decimal_digits() + if !self.eat_decimal_digits() { + return Int { base, empty_int: true }; + } } 'o' => { base = Base::Octal; self.bump(); - self.eat_decimal_digits() + if !self.eat_decimal_digits() { + return Int { base, empty_int: true }; + } } 'x' => { base = Base::Hexadecimal; self.bump(); - self.eat_hexadecimal_digits() + if !self.eat_hexadecimal_digits() { + return Int { base, empty_int: true }; + } } - // Not a base prefix. - '0'..='9' | '_' | '.' | 'e' | 'E' => { + // Not a base prefix; consume additional digits. + '0'..='9' | '_' => { self.eat_decimal_digits(); - true } + + // Also not a base prefix; nothing more to do here. + '.' | 'e' | 'E' => {} + // Just a 0. _ => return Int { base, empty_int: false }, - }; - // Base prefix was provided, but there were no digits - // after it, e.g. "0x". - if !has_digits { - return Int { base, empty_int: true }; } } else { // No base prefix, parse number in the usual way. diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs index 9b74d108546..6601a80920b 100644 --- a/compiler/rustc_lint/src/builtin.rs +++ b/compiler/rustc_lint/src/builtin.rs @@ -611,7 +611,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingDoc { declare_lint! { /// The `missing_copy_implementations` lint detects potentially-forgotten - /// implementations of [`Copy`]. + /// implementations of [`Copy`] for public types. /// /// [`Copy`]: https://doc.rust-lang.org/std/marker/trait.Copy.html /// @@ -729,7 +729,7 @@ impl<'tcx> LateLintPass<'tcx> for MissingCopyImplementations { declare_lint! { /// The `missing_debug_implementations` lint detects missing - /// implementations of [`fmt::Debug`]. + /// implementations of [`fmt::Debug`] for public types. /// /// [`fmt::Debug`]: https://doc.rust-lang.org/std/fmt/trait.Debug.html /// diff --git a/compiler/rustc_lint/src/expect.rs b/compiler/rustc_lint/src/expect.rs index e9eb14ea188..b1266b58a61 100644 --- a/compiler/rustc_lint/src/expect.rs +++ b/compiler/rustc_lint/src/expect.rs @@ -1,5 +1,5 @@ use crate::lints::{Expectation, ExpectationNote}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::lint::builtin::UNFULFILLED_LINT_EXPECTATIONS; use rustc_session::lint::LintExpectationId; diff --git a/compiler/rustc_lint/src/levels.rs b/compiler/rustc_lint/src/levels.rs index a43c09a7939..b92ed11f38a 100644 --- a/compiler/rustc_lint/src/levels.rs +++ b/compiler/rustc_lint/src/levels.rs @@ -20,7 +20,7 @@ use rustc_middle::lint::{ reveal_actual_level, struct_lint_level, LevelAndSource, LintExpectation, LintLevelSource, ShallowLintLevelMap, }; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{RegisteredTools, TyCtxt}; use rustc_session::lint::builtin::{RENAMED_AND_REMOVED_LINTS, UNKNOWN_LINTS, UNUSED_ATTRIBUTES}; use rustc_session::lint::{ diff --git a/compiler/rustc_lint/src/lib.rs b/compiler/rustc_lint/src/lib.rs index 5c7016633c2..dfddfe09ab3 100644 --- a/compiler/rustc_lint/src/lib.rs +++ b/compiler/rustc_lint/src/lib.rs @@ -86,7 +86,7 @@ use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage}; use rustc_fluent_macro::fluent_messages; use rustc_hir as hir; use rustc_hir::def_id::LocalDefId; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::lint::builtin::{ BARE_TRAIT_OBJECTS, ELIDED_LIFETIMES_IN_PATHS, EXPLICIT_OUTLIVES_REQUIREMENTS, diff --git a/compiler/rustc_macros/src/query.rs b/compiler/rustc_macros/src/query.rs index a8b25ff66d7..001d53b1099 100644 --- a/compiler/rustc_macros/src/query.rs +++ b/compiler/rustc_macros/src/query.rs @@ -253,7 +253,7 @@ fn add_query_desc_cached_impl( quote! { #[allow(unused_variables, unused_braces, rustc::pass_by_value)] #[inline] - pub fn #name<'tcx>(#tcx: TyCtxt<'tcx>, #key: &crate::ty::query::query_keys::#name<'tcx>) -> bool { + pub fn #name<'tcx>(#tcx: TyCtxt<'tcx>, #key: &crate::query::query_keys::#name<'tcx>) -> bool { #expr } } @@ -262,7 +262,7 @@ fn add_query_desc_cached_impl( // we're taking `key` by reference, but some rustc types usually prefer being passed by value #[allow(rustc::pass_by_value)] #[inline] - pub fn #name<'tcx>(_: TyCtxt<'tcx>, _: &crate::ty::query::query_keys::#name<'tcx>) -> bool { + pub fn #name<'tcx>(_: TyCtxt<'tcx>, _: &crate::query::query_keys::#name<'tcx>) -> bool { false } } @@ -273,7 +273,7 @@ fn add_query_desc_cached_impl( let desc = quote! { #[allow(unused_variables)] - pub fn #name<'tcx>(tcx: TyCtxt<'tcx>, key: crate::ty::query::query_keys::#name<'tcx>) -> String { + pub fn #name<'tcx>(tcx: TyCtxt<'tcx>, key: crate::query::query_keys::#name<'tcx>) -> String { let (#tcx, #key) = (tcx, key); ::rustc_middle::ty::print::with_no_trimmed_paths!( format!(#desc) diff --git a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs index 4a3b783c636..fe880b939ef 100644 --- a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs +++ b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs @@ -14,8 +14,8 @@ use rustc_middle::metadata::ModChild; use rustc_middle::middle::exported_symbols::ExportedSymbol; use rustc_middle::middle::stability::DeprecationEntry; use rustc_middle::query::LocalCrate; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_middle::ty::fast_reject::SimplifiedType; -use rustc_middle::ty::query::{ExternProviders, Providers}; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::cstore::CrateStore; use rustc_session::{Session, StableCrateId}; @@ -114,8 +114,8 @@ macro_rules! provide_one { ($tcx:ident, $def_id:ident, $other:ident, $cdata:ident, $name:ident => $compute:block) => { fn $name<'tcx>( $tcx: TyCtxt<'tcx>, - def_id_arg: ty::query::query_keys::$name<'tcx>, - ) -> ty::query::query_provided::$name<'tcx> { + def_id_arg: rustc_middle::query::query_keys::$name<'tcx>, + ) -> rustc_middle::query::query_provided::$name<'tcx> { let _prof_timer = $tcx.prof.generic_activity(concat!("metadata_decode_entry_", stringify!($name))); diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs index 8a643b35f15..79eb48a1a31 100644 --- a/compiler/rustc_metadata/src/rmeta/encoder.rs +++ b/compiler/rustc_metadata/src/rmeta/encoder.rs @@ -25,10 +25,10 @@ use rustc_middle::middle::exported_symbols::{ }; use rustc_middle::mir::interpret; use rustc_middle::query::LocalCrate; +use rustc_middle::query::Providers; use rustc_middle::traits::specialization_graph; use rustc_middle::ty::codec::TyEncoder; use rustc_middle::ty::fast_reject::{self, SimplifiedType, TreatParams}; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, SymbolName, Ty, TyCtxt}; use rustc_middle::util::common::to_readable_str; use rustc_serialize::{opaque, Decodable, Decoder, Encodable, Encoder}; @@ -1516,8 +1516,11 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { if encode_opt { record!(self.tables.optimized_mir[def_id.to_def_id()] <- tcx.optimized_mir(def_id)); - if tcx.sess.opts.unstable_opts.drop_tracking_mir && let DefKind::Generator = self.tcx.def_kind(def_id) { - record!(self.tables.mir_generator_witnesses[def_id.to_def_id()] <- tcx.mir_generator_witnesses(def_id)); + if tcx.sess.opts.unstable_opts.drop_tracking_mir + && let DefKind::Generator = self.tcx.def_kind(def_id) + && let Some(witnesses) = tcx.mir_generator_witnesses(def_id) + { + record!(self.tables.mir_generator_witnesses[def_id.to_def_id()] <- witnesses); } } if encode_const { diff --git a/compiler/rustc_metadata/src/rmeta/mod.rs b/compiler/rustc_metadata/src/rmeta/mod.rs index 1328d700210..9eaf330b536 100644 --- a/compiler/rustc_metadata/src/rmeta/mod.rs +++ b/compiler/rustc_metadata/src/rmeta/mod.rs @@ -20,8 +20,8 @@ use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs; use rustc_middle::middle::exported_symbols::{ExportedSymbol, SymbolExportInfo}; use rustc_middle::middle::resolve_bound_vars::ObjectLifetimeDefault; use rustc_middle::mir; +use rustc_middle::query::Providers; use rustc_middle::ty::fast_reject::SimplifiedType; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, ReprOptions, Ty, UnusedGenericParams}; use rustc_middle::ty::{DeducedParamAttrs, GeneratorDiagnosticData, ParameterizedOverTcx, TyCtxt}; use rustc_serialize::opaque::FileEncoder; diff --git a/compiler/rustc_middle/src/hir/mod.rs b/compiler/rustc_middle/src/hir/mod.rs index a867a13e061..61c9e72db2c 100644 --- a/compiler/rustc_middle/src/hir/mod.rs +++ b/compiler/rustc_middle/src/hir/mod.rs @@ -6,7 +6,7 @@ pub mod map; pub mod nested_filter; pub mod place; -use crate::ty::query::Providers; +use crate::query::Providers; use crate::ty::{EarlyBinder, ImplSubject, TyCtxt}; use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; use rustc_data_structures::sync::{par_for_each_in, DynSend, DynSync}; diff --git a/compiler/rustc_middle/src/lib.rs b/compiler/rustc_middle/src/lib.rs index e9172e767e0..dc911c88574 100644 --- a/compiler/rustc_middle/src/lib.rs +++ b/compiler/rustc_middle/src/lib.rs @@ -85,12 +85,7 @@ mod tests; mod macros; #[macro_use] -pub mod query; - -#[macro_use] pub mod arena; -#[macro_use] -pub mod dep_graph; pub(crate) mod error; pub mod hir; pub mod infer; @@ -100,10 +95,16 @@ pub mod middle; pub mod mir; pub mod thir; pub mod traits; +#[macro_use] pub mod ty; pub mod util; mod values; +#[macro_use] +pub mod query; +#[macro_use] +pub mod dep_graph; + // Allows macros to refer to this crate as `::rustc_middle` extern crate self as rustc_middle; diff --git a/compiler/rustc_middle/src/middle/limits.rs b/compiler/rustc_middle/src/middle/limits.rs index 12aef66bcf9..bd859d4d61b 100644 --- a/compiler/rustc_middle/src/middle/limits.rs +++ b/compiler/rustc_middle/src/middle/limits.rs @@ -11,7 +11,7 @@ use crate::bug; use crate::error::LimitInvalid; -use crate::ty; +use crate::query::Providers; use rustc_ast::Attribute; use rustc_session::Session; use rustc_session::{Limit, Limits}; @@ -19,7 +19,7 @@ use rustc_span::symbol::{sym, Symbol}; use std::num::IntErrorKind; -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { providers.limits = |tcx, ()| Limits { recursion_limit: get_recursion_limit(tcx.hir().krate_attrs(), tcx.sess), move_size_limit: get_limit( diff --git a/compiler/rustc_middle/src/middle/mod.rs b/compiler/rustc_middle/src/middle/mod.rs index 9c25f3009ba..9bb4570ef14 100644 --- a/compiler/rustc_middle/src/middle/mod.rs +++ b/compiler/rustc_middle/src/middle/mod.rs @@ -32,6 +32,6 @@ pub mod region; pub mod resolve_bound_vars; pub mod stability; -pub fn provide(providers: &mut crate::ty::query::Providers) { +pub fn provide(providers: &mut crate::query::Providers) { limits::provide(providers); } diff --git a/compiler/rustc_middle/src/mir/interpret/error.rs b/compiler/rustc_middle/src/mir/interpret/error.rs index e45284ca506..d65ceef2472 100644 --- a/compiler/rustc_middle/src/mir/interpret/error.rs +++ b/compiler/rustc_middle/src/mir/interpret/error.rs @@ -15,15 +15,49 @@ use std::{any::Any, backtrace::Backtrace, fmt}; pub enum ErrorHandled { /// Already reported an error for this evaluation, and the compilation is /// *guaranteed* to fail. Warnings/lints *must not* produce `Reported`. - Reported(ErrorGuaranteed), + Reported(ReportedErrorInfo), /// Don't emit an error, the evaluation failed because the MIR was generic /// and the substs didn't fully monomorphize it. TooGeneric, } impl From<ErrorGuaranteed> for ErrorHandled { - fn from(err: ErrorGuaranteed) -> ErrorHandled { - ErrorHandled::Reported(err) + #[inline] + fn from(error: ErrorGuaranteed) -> ErrorHandled { + ErrorHandled::Reported(error.into()) + } +} + +#[derive(Debug, Copy, Clone, PartialEq, Eq, HashStable, TyEncodable, TyDecodable)] +pub struct ReportedErrorInfo { + error: ErrorGuaranteed, + is_tainted_by_errors: bool, +} + +impl ReportedErrorInfo { + #[inline] + pub fn tainted_by_errors(error: ErrorGuaranteed) -> ReportedErrorInfo { + ReportedErrorInfo { is_tainted_by_errors: true, error } + } + + /// Returns true if evaluation failed because MIR was tainted by errors. + #[inline] + pub fn is_tainted_by_errors(self) -> bool { + self.is_tainted_by_errors + } +} + +impl From<ErrorGuaranteed> for ReportedErrorInfo { + #[inline] + fn from(error: ErrorGuaranteed) -> ReportedErrorInfo { + ReportedErrorInfo { is_tainted_by_errors: false, error } + } +} + +impl Into<ErrorGuaranteed> for ReportedErrorInfo { + #[inline] + fn into(self) -> ErrorGuaranteed { + self.error } } @@ -89,7 +123,7 @@ fn print_backtrace(backtrace: &Backtrace) { impl From<ErrorGuaranteed> for InterpErrorInfo<'_> { fn from(err: ErrorGuaranteed) -> Self { - InterpError::InvalidProgram(InvalidProgramInfo::AlreadyReported(err)).into() + InterpError::InvalidProgram(InvalidProgramInfo::AlreadyReported(err.into())).into() } } @@ -125,7 +159,7 @@ pub enum InvalidProgramInfo<'tcx> { /// Resolution can fail if we are in a too generic context. TooGeneric, /// Abort in case errors are already reported. - AlreadyReported(ErrorGuaranteed), + AlreadyReported(ReportedErrorInfo), /// An error occurred during layout computation. Layout(layout::LayoutError<'tcx>), /// An error occurred during FnAbi computation: the passed --target lacks FFI support @@ -144,7 +178,7 @@ impl fmt::Display for InvalidProgramInfo<'_> { use InvalidProgramInfo::*; match self { TooGeneric => write!(f, "encountered overly generic constant"), - AlreadyReported(ErrorGuaranteed { .. }) => { + AlreadyReported(_) => { write!( f, "an error has already been reported elsewhere (this should not usually be printed)" diff --git a/compiler/rustc_middle/src/mir/interpret/mod.rs b/compiler/rustc_middle/src/mir/interpret/mod.rs index e5a9766c84d..3620385fab1 100644 --- a/compiler/rustc_middle/src/mir/interpret/mod.rs +++ b/compiler/rustc_middle/src/mir/interpret/mod.rs @@ -120,8 +120,8 @@ use crate::ty::{self, Instance, Ty, TyCtxt}; pub use self::error::{ struct_error, CheckInAllocMsg, ErrorHandled, EvalToAllocationRawResult, EvalToConstValueResult, EvalToValTreeResult, InterpError, InterpErrorInfo, InterpResult, InvalidProgramInfo, - MachineStopType, ResourceExhaustionInfo, ScalarSizeMismatch, UndefinedBehaviorInfo, - UninitBytesAccess, UnsupportedOpInfo, + MachineStopType, ReportedErrorInfo, ResourceExhaustionInfo, ScalarSizeMismatch, + UndefinedBehaviorInfo, UninitBytesAccess, UnsupportedOpInfo, }; pub use self::value::{get_slice_bytes, ConstAlloc, ConstValue, Scalar}; diff --git a/compiler/rustc_middle/src/mir/interpret/queries.rs b/compiler/rustc_middle/src/mir/interpret/queries.rs index ed4ee93e97d..ce11dabc195 100644 --- a/compiler/rustc_middle/src/mir/interpret/queries.rs +++ b/compiler/rustc_middle/src/mir/interpret/queries.rs @@ -61,7 +61,7 @@ impl<'tcx> TyCtxt<'tcx> { self.const_eval_global_id(param_env, cid, span) } Ok(None) => Err(ErrorHandled::TooGeneric), - Err(error_reported) => Err(ErrorHandled::Reported(error_reported)), + Err(err) => Err(ErrorHandled::Reported(err.into())), } } @@ -110,7 +110,7 @@ impl<'tcx> TyCtxt<'tcx> { }) } Ok(None) => Err(ErrorHandled::TooGeneric), - Err(error_reported) => Err(ErrorHandled::Reported(error_reported)), + Err(err) => Err(ErrorHandled::Reported(err.into())), } } diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs index 6b0401a4c9b..1da94dd7917 100644 --- a/compiler/rustc_middle/src/mir/mod.rs +++ b/compiler/rustc_middle/src/mir/mod.rs @@ -2330,7 +2330,7 @@ impl<'tcx> ConstantKind<'tcx> { if let Some(val) = c.kind().try_eval_for_mir(tcx, param_env) { match val { Ok(val) => Self::Val(val, c.ty()), - Err(_) => Self::Ty(tcx.const_error(self.ty())), + Err(guar) => Self::Ty(tcx.const_error(self.ty(), guar)), } } else { self @@ -2342,9 +2342,7 @@ impl<'tcx> ConstantKind<'tcx> { match tcx.const_eval_resolve(param_env, uneval, None) { Ok(val) => Self::Val(val, ty), Err(ErrorHandled::TooGeneric) => self, - Err(ErrorHandled::Reported(guar)) => { - Self::Ty(tcx.const_error_with_guaranteed(ty, guar)) - } + Err(ErrorHandled::Reported(guar)) => Self::Ty(tcx.const_error(ty, guar.into())), } } } diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs index 5acdd68e60e..f564f5e99e8 100644 --- a/compiler/rustc_middle/src/query/mod.rs +++ b/compiler/rustc_middle/src/query/mod.rs @@ -4,8 +4,89 @@ //! ["Queries: demand-driven compilation"](https://rustc-dev-guide.rust-lang.org/query.html). //! This chapter includes instructions for adding new queries. -use crate::ty::{self, print::describe_as_module, TyCtxt}; +#![allow(unused_parens)] + +use crate::dep_graph; +use crate::dep_graph::DepKind; +use crate::infer::canonical::{self, Canonical}; +use crate::lint::LintExpectation; +use crate::metadata::ModChild; +use crate::middle::codegen_fn_attrs::CodegenFnAttrs; +use crate::middle::exported_symbols::{ExportedSymbol, SymbolExportInfo}; +use crate::middle::lib_features::LibFeatures; +use crate::middle::privacy::EffectiveVisibilities; +use crate::middle::resolve_bound_vars::{ObjectLifetimeDefault, ResolveBoundVars, ResolvedArg}; +use crate::middle::stability::{self, DeprecationEntry}; +use crate::mir; +use crate::mir::interpret::GlobalId; +use crate::mir::interpret::{ + ConstValue, EvalToAllocationRawResult, EvalToConstValueResult, EvalToValTreeResult, +}; +use crate::mir::interpret::{LitToConstError, LitToConstInput}; +use crate::mir::mono::CodegenUnit; +use crate::query::erase::{erase, restore, Erase}; +use crate::thir; +use crate::traits::query::{ + CanonicalPredicateGoal, CanonicalProjectionGoal, CanonicalTyGoal, + CanonicalTypeOpAscribeUserTypeGoal, CanonicalTypeOpEqGoal, CanonicalTypeOpNormalizeGoal, + CanonicalTypeOpProvePredicateGoal, CanonicalTypeOpSubtypeGoal, NoSolution, +}; +use crate::traits::query::{ + DropckConstraint, DropckOutlivesResult, MethodAutoderefStepsResult, NormalizationResult, + OutlivesBound, +}; +use crate::traits::specialization_graph; +use crate::traits::{self, ImplSource}; +use crate::ty::fast_reject::SimplifiedType; +use crate::ty::layout::ValidityRequirement; +use crate::ty::query::{ + query_ensure, query_get_at, DynamicQuery, IntoQueryParam, TyCtxtAt, TyCtxtEnsure, + TyCtxtEnsureWithValue, +}; +use crate::ty::subst::{GenericArg, SubstsRef}; +use crate::ty::util::AlwaysRequiresDrop; +use crate::ty::GeneratorDiagnosticData; +use crate::ty::TyCtxtFeed; +use crate::ty::{ + self, print::describe_as_module, CrateInherentImpls, ParamEnvAnd, Ty, TyCtxt, + UnusedGenericParams, +}; +use rustc_arena::TypedArena; +use rustc_ast as ast; +use rustc_ast::expand::allocator::AllocatorKind; +use rustc_attr as attr; +use rustc_data_structures::fingerprint::Fingerprint; +use rustc_data_structures::fx::{FxHashMap, FxIndexMap, FxIndexSet}; +use rustc_data_structures::steal::Steal; +use rustc_data_structures::svh::Svh; +use rustc_data_structures::sync::Lrc; +use rustc_data_structures::sync::WorkerLocal; +use rustc_data_structures::unord::UnordSet; +use rustc_errors::ErrorGuaranteed; +use rustc_hir as hir; +use rustc_hir::def::{DefKind, DocLinkResMap}; +use rustc_hir::def_id::{ + CrateNum, DefId, DefIdMap, DefIdSet, LocalDefId, LocalDefIdMap, LocalDefIdSet, +}; +use rustc_hir::lang_items::{LangItem, LanguageItems}; +use rustc_hir::{Crate, ItemLocalId, TraitCandidate}; +use rustc_index::IndexVec; +use rustc_query_system::ich::StableHashingContext; +use rustc_query_system::query::{try_get_cached, CacheSelector, QueryCache, QueryMode, QueryState}; +use rustc_session::config::{EntryFnType, OptLevel, OutputFilenames, SymbolManglingVersion}; +use rustc_session::cstore::{CrateDepKind, CrateSource}; +use rustc_session::cstore::{ExternCrate, ForeignModule, LinkagePreference, NativeLib}; +use rustc_session::lint::LintExpectationId; +use rustc_session::Limits; use rustc_span::def_id::LOCAL_CRATE; +use rustc_span::symbol::Symbol; +use rustc_span::{Span, DUMMY_SP}; +use rustc_target::abi; +use rustc_target::spec::PanicStrategy; +use std::mem; +use std::ops::Deref; +use std::path::PathBuf; +use std::sync::Arc; pub mod erase; mod keys; @@ -446,7 +527,7 @@ rustc_queries! { } } - query mir_generator_witnesses(key: DefId) -> &'tcx mir::GeneratorLayout<'tcx> { + query mir_generator_witnesses(key: DefId) -> &'tcx Option<mir::GeneratorLayout<'tcx>> { arena_cache desc { |tcx| "generator witness types for `{}`", tcx.def_path_str(key) } cache_on_disk_if { key.is_local() } @@ -2102,3 +2183,6 @@ rustc_queries! { desc { "check whether two const param are definitely not equal to eachother"} } } + +rustc_query_append! { define_callbacks! } +rustc_feedable_queries! { define_feedable! } diff --git a/compiler/rustc_middle/src/ty/_match.rs b/compiler/rustc_middle/src/ty/_match.rs index 468c2c818b2..cbc68fde9d9 100644 --- a/compiler/rustc_middle/src/ty/_match.rs +++ b/compiler/rustc_middle/src/ty/_match.rs @@ -83,7 +83,7 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> { (&ty::Error(guar), _) | (_, &ty::Error(guar)) => Ok(self.tcx().ty_error(guar)), - _ => relate::super_relate_tys(self, a, b), + _ => relate::structurally_relate_tys(self, a, b), } } @@ -109,7 +109,7 @@ impl<'tcx> TypeRelation<'tcx> for Match<'tcx> { _ => {} } - relate::super_relate_consts(self, a, b) + relate::structurally_relate_consts(self, a, b) } fn binders<T>( diff --git a/compiler/rustc_middle/src/ty/abstract_const.rs b/compiler/rustc_middle/src/ty/abstract_const.rs index 972c417cbba..a39631da936 100644 --- a/compiler/rustc_middle/src/ty/abstract_const.rs +++ b/compiler/rustc_middle/src/ty/abstract_const.rs @@ -53,7 +53,7 @@ impl<'tcx> TyCtxt<'tcx> { fn fold_const(&mut self, c: Const<'tcx>) -> Const<'tcx> { let ct = match c.kind() { ty::ConstKind::Unevaluated(uv) => match self.tcx.thir_abstract_const(uv.def) { - Err(e) => self.tcx.const_error_with_guaranteed(c.ty(), e), + Err(e) => self.tcx.const_error(c.ty(), e), Ok(Some(bac)) => { let substs = self.tcx.erase_regions(uv.substs); let bac = bac.subst(self.tcx, substs); diff --git a/compiler/rustc_middle/src/ty/closure.rs b/compiler/rustc_middle/src/ty/closure.rs index f29bf92b0ed..be7b2b7ec67 100644 --- a/compiler/rustc_middle/src/ty/closure.rs +++ b/compiler/rustc_middle/src/ty/closure.rs @@ -5,6 +5,7 @@ use crate::{mir, ty}; use std::fmt::Write; +use crate::query::Providers; use rustc_data_structures::fx::{FxHashMap, FxIndexMap}; use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::{self as hir, LangItem}; @@ -457,6 +458,6 @@ impl BorrowKind { } } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { closure_typeinfo, ..*providers } +pub fn provide(providers: &mut Providers) { + *providers = Providers { closure_typeinfo, ..*providers } } diff --git a/compiler/rustc_middle/src/ty/consts.rs b/compiler/rustc_middle/src/ty/consts.rs index e7107c28bf4..0a5792a9c47 100644 --- a/compiler/rustc_middle/src/ty/consts.rs +++ b/compiler/rustc_middle/src/ty/consts.rs @@ -142,9 +142,7 @@ impl<'tcx> Const<'tcx> { ty::ConstKind::Bound(debruijn, ty::BoundVar::from_u32(index)), param_ty, )), - Some(rbv::ResolvedArg::Error(guar)) => { - Some(tcx.const_error_with_guaranteed(param_ty, guar)) - } + Some(rbv::ResolvedArg::Error(guar)) => Some(tcx.const_error(param_ty, guar)), arg => bug!("unexpected bound var resolution for {:?}: {arg:?}", expr.hir_id), } } @@ -228,7 +226,7 @@ impl<'tcx> Const<'tcx> { if let Some(val) = self.kind().try_eval_for_typeck(tcx, param_env) { match val { Ok(val) => tcx.mk_const(val, self.ty()), - Err(guar) => tcx.const_error_with_guaranteed(self.ty(), guar), + Err(guar) => tcx.const_error(self.ty(), guar), } } else { // Either the constant isn't evaluatable or ValTree creation failed. diff --git a/compiler/rustc_middle/src/ty/consts/kind.rs b/compiler/rustc_middle/src/ty/consts/kind.rs index 1ac2cd13982..a108f6c8947 100644 --- a/compiler/rustc_middle/src/ty/consts/kind.rs +++ b/compiler/rustc_middle/src/ty/consts/kind.rs @@ -245,7 +245,7 @@ impl<'tcx> ConstKind<'tcx> { // can leak through `val` into the const we return. Ok(val) => Some(Ok(EvalResult::ValTree(val?))), Err(ErrorHandled::TooGeneric) => None, - Err(ErrorHandled::Reported(e)) => Some(Err(e)), + Err(ErrorHandled::Reported(e)) => Some(Err(e.into())), } } EvalMode::Mir => { @@ -256,7 +256,7 @@ impl<'tcx> ConstKind<'tcx> { // can leak through `val` into the const we return. Ok(val) => Some(Ok(EvalResult::ConstVal(val))), Err(ErrorHandled::TooGeneric) => None, - Err(ErrorHandled::Reported(e)) => Some(Err(e)), + Err(ErrorHandled::Reported(e)) => Some(Err(e.into())), } } } diff --git a/compiler/rustc_middle/src/ty/context.rs b/compiler/rustc_middle/src/ty/context.rs index 15d697d8636..097bfb71a6f 100644 --- a/compiler/rustc_middle/src/ty/context.rs +++ b/compiler/rustc_middle/src/ty/context.rs @@ -15,6 +15,7 @@ use crate::middle::stability; use crate::mir::interpret::{self, Allocation, ConstAllocation}; use crate::mir::{Body, Local, Place, PlaceElem, ProjectionKind, Promoted}; use crate::query::LocalCrate; +use crate::query::Providers; use crate::thir::Thir; use crate::traits; use crate::traits::solve; @@ -732,17 +733,13 @@ impl<'tcx> TyCtxt<'tcx> { /// Like [TyCtxt::ty_error] but for constants, with current `ErrorGuaranteed` #[track_caller] - pub fn const_error_with_guaranteed( - self, - ty: Ty<'tcx>, - reported: ErrorGuaranteed, - ) -> Const<'tcx> { + pub fn const_error(self, ty: Ty<'tcx>, reported: ErrorGuaranteed) -> Const<'tcx> { self.mk_const(ty::ConstKind::Error(reported), ty) } /// Like [TyCtxt::ty_error] but for constants. #[track_caller] - pub fn const_error(self, ty: Ty<'tcx>) -> Const<'tcx> { + pub fn const_error_misc(self, ty: Ty<'tcx>) -> Const<'tcx> { self.const_error_with_message( ty, DUMMY_SP, @@ -2458,7 +2455,7 @@ pub struct DeducedParamAttrs { pub read_only: bool, } -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { providers.maybe_unused_trait_imports = |tcx, ()| &tcx.resolutions(()).maybe_unused_trait_imports; providers.names_imported_by_glob_use = |tcx, id| { diff --git a/compiler/rustc_middle/src/ty/erase_regions.rs b/compiler/rustc_middle/src/ty/erase_regions.rs index ad930d1e6b6..7895993ccff 100644 --- a/compiler/rustc_middle/src/ty/erase_regions.rs +++ b/compiler/rustc_middle/src/ty/erase_regions.rs @@ -1,8 +1,9 @@ +use crate::query::Providers; use crate::ty::fold::{TypeFoldable, TypeFolder, TypeSuperFoldable}; use crate::ty::{self, Ty, TyCtxt, TypeFlags, TypeVisitableExt}; -pub(super) fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { erase_regions_ty, ..*providers }; +pub(super) fn provide(providers: &mut Providers) { + *providers = Providers { erase_regions_ty, ..*providers }; } fn erase_regions_ty<'tcx>(tcx: TyCtxt<'tcx>, ty: Ty<'tcx>) -> Ty<'tcx> { diff --git a/compiler/rustc_middle/src/ty/generics.rs b/compiler/rustc_middle/src/ty/generics.rs index baef4ffeda7..99174bae3f6 100644 --- a/compiler/rustc_middle/src/ty/generics.rs +++ b/compiler/rustc_middle/src/ty/generics.rs @@ -103,7 +103,7 @@ impl GenericParamDef { ty::GenericParamDefKind::Lifetime => tcx.mk_re_error_misc().into(), ty::GenericParamDefKind::Type { .. } => tcx.ty_error_misc().into(), ty::GenericParamDefKind::Const { .. } => { - tcx.const_error(tcx.type_of(self.def_id).subst(tcx, preceding_substs)).into() + tcx.const_error_misc(tcx.type_of(self.def_id).subst(tcx, preceding_substs)).into() } } } diff --git a/compiler/rustc_middle/src/ty/inhabitedness/mod.rs b/compiler/rustc_middle/src/ty/inhabitedness/mod.rs index 9e672004cf9..4223502848e 100644 --- a/compiler/rustc_middle/src/ty/inhabitedness/mod.rs +++ b/compiler/rustc_middle/src/ty/inhabitedness/mod.rs @@ -43,6 +43,7 @@ //! This code should only compile in modules where the uninhabitedness of `Foo` //! is visible. +use crate::query::Providers; use crate::ty::context::TyCtxt; use crate::ty::{self, DefId, Ty, VariantDef, Visibility}; @@ -52,9 +53,8 @@ pub mod inhabited_predicate; pub use inhabited_predicate::InhabitedPredicate; -pub(crate) fn provide(providers: &mut ty::query::Providers) { - *providers = - ty::query::Providers { inhabited_predicate_adt, inhabited_predicate_type, ..*providers }; +pub(crate) fn provide(providers: &mut Providers) { + *providers = Providers { inhabited_predicate_adt, inhabited_predicate_type, ..*providers }; } /// Returns an `InhabitedPredicate` that is generic over type parameters and diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index b414e1200cd..df324bcc52c 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -21,6 +21,7 @@ use crate::error::{OpaqueHiddenTypeMismatch, TypeMismatchReason}; use crate::metadata::ModChild; use crate::middle::privacy::EffectiveVisibilities; use crate::mir::{Body, GeneratorLayout}; +use crate::query::Providers; use crate::traits::{self, Reveal}; use crate::ty; use crate::ty::fast_reject::SimplifiedType; @@ -121,6 +122,7 @@ pub mod inhabitedness; pub mod layout; pub mod normalize_erasing_regions; pub mod print; +#[macro_use] pub mod query; pub mod relate; pub mod subst; @@ -1070,6 +1072,24 @@ impl ParamTerm { } } +#[derive(Copy, Clone, Eq, PartialEq, Debug)] +pub enum TermVid<'tcx> { + Ty(ty::TyVid), + Const(ty::ConstVid<'tcx>), +} + +impl From<ty::TyVid> for TermVid<'_> { + fn from(value: ty::TyVid) -> Self { + TermVid::Ty(value) + } +} + +impl<'tcx> From<ty::ConstVid<'tcx>> for TermVid<'tcx> { + fn from(value: ty::ConstVid<'tcx>) -> Self { + TermVid::Const(value) + } +} + /// This kind of predicate has no *direct* correspondent in the /// syntax, but it roughly corresponds to the syntactic forms: /// @@ -2590,7 +2610,7 @@ pub fn ast_uint_ty(uty: UintTy) -> ast::UintTy { } } -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { closure::provide(providers); context::provide(providers); erase_regions::provide(providers); @@ -2599,7 +2619,7 @@ pub fn provide(providers: &mut ty::query::Providers) { print::provide(providers); super::util::bug::provide(providers); super::middle::provide(providers); - *providers = ty::query::Providers { + *providers = Providers { trait_impls_of: trait_def::trait_impls_of_provider, incoherent_impls: trait_def::incoherent_impls_provider, const_param_default: consts::const_param_default, diff --git a/compiler/rustc_middle/src/ty/opaque_types.rs b/compiler/rustc_middle/src/ty/opaque_types.rs index 72710b78c93..1b336b7bfc6 100644 --- a/compiler/rustc_middle/src/ty/opaque_types.rs +++ b/compiler/rustc_middle/src/ty/opaque_types.rs @@ -207,14 +207,16 @@ impl<'tcx> TypeFolder<TyCtxt<'tcx>> for ReverseMapper<'tcx> { Some(GenericArgKind::Const(c1)) => c1, Some(u) => panic!("const mapped to unexpected kind: {:?}", u), None => { - if !self.ignore_errors { - self.tcx.sess.emit_err(ConstNotUsedTraitAlias { + let guar = self + .tcx + .sess + .create_err(ConstNotUsedTraitAlias { ct: ct.to_string(), span: self.span, - }); - } + }) + .emit_unless(self.ignore_errors); - self.interner().const_error(ct.ty()) + self.interner().const_error(ct.ty(), guar) } } } diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index 926172ff828..385156262c7 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -1,4 +1,5 @@ use crate::mir::interpret::{AllocRange, GlobalAlloc, Pointer, Provenance, Scalar}; +use crate::query::Providers; use crate::ty::query::IntoQueryParam; use crate::ty::{ self, ConstInt, ParamConst, ScalarInt, Term, TermKind, Ty, TyCtxt, TypeFoldable, @@ -3054,8 +3055,8 @@ fn trimmed_def_paths(tcx: TyCtxt<'_>, (): ()) -> FxHashMap<DefId, Symbol> { map } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { trimmed_def_paths, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { trimmed_def_paths, ..*providers }; } #[derive(Default)] diff --git a/compiler/rustc_middle/src/ty/query.rs b/compiler/rustc_middle/src/ty/query.rs index fcdf33f9de4..647f4826876 100644 --- a/compiler/rustc_middle/src/ty/query.rs +++ b/compiler/rustc_middle/src/ty/query.rs @@ -1,91 +1,26 @@ -#![allow(unused_parens)] - use crate::dep_graph; use crate::dep_graph::DepKind; -use crate::infer::canonical::{self, Canonical}; -use crate::lint::LintExpectation; -use crate::metadata::ModChild; -use crate::middle::codegen_fn_attrs::CodegenFnAttrs; -use crate::middle::exported_symbols::{ExportedSymbol, SymbolExportInfo}; -use crate::middle::lib_features::LibFeatures; -use crate::middle::privacy::EffectiveVisibilities; -use crate::middle::resolve_bound_vars::{ObjectLifetimeDefault, ResolveBoundVars, ResolvedArg}; -use crate::middle::stability::{self, DeprecationEntry}; -use crate::mir; -use crate::mir::interpret::GlobalId; -use crate::mir::interpret::{ - ConstValue, EvalToAllocationRawResult, EvalToConstValueResult, EvalToValTreeResult, -}; -use crate::mir::interpret::{LitToConstError, LitToConstInput}; -use crate::mir::mono::CodegenUnit; - -use crate::query::erase::{erase, restore, Erase}; use crate::query::on_disk_cache::CacheEncoder; use crate::query::on_disk_cache::EncodedDepNodeIndex; use crate::query::on_disk_cache::OnDiskCache; -use crate::query::{AsLocalKey, Key}; -use crate::thir; -use crate::traits::query::{ - CanonicalPredicateGoal, CanonicalProjectionGoal, CanonicalTyGoal, - CanonicalTypeOpAscribeUserTypeGoal, CanonicalTypeOpEqGoal, CanonicalTypeOpNormalizeGoal, - CanonicalTypeOpProvePredicateGoal, CanonicalTypeOpSubtypeGoal, NoSolution, +use crate::query::{ + DynamicQueries, ExternProviders, Providers, QueryArenas, QueryCaches, QueryEngine, QueryStates, }; -use crate::traits::query::{ - DropckConstraint, DropckOutlivesResult, MethodAutoderefStepsResult, NormalizationResult, - OutlivesBound, -}; -use crate::traits::specialization_graph; -use crate::traits::{self, ImplSource}; -use crate::ty::context::TyCtxtFeed; -use crate::ty::fast_reject::SimplifiedType; -use crate::ty::layout::ValidityRequirement; -use crate::ty::subst::{GenericArg, SubstsRef}; -use crate::ty::util::AlwaysRequiresDrop; -use crate::ty::GeneratorDiagnosticData; -use crate::ty::{self, CrateInherentImpls, ParamEnvAnd, Ty, TyCtxt, UnusedGenericParams}; +use crate::ty::TyCtxt; use field_offset::FieldOffset; use measureme::StringId; -use rustc_arena::TypedArena; -use rustc_ast as ast; -use rustc_ast::expand::allocator::AllocatorKind; -use rustc_attr as attr; -use rustc_data_structures::fingerprint::Fingerprint; -use rustc_data_structures::fx::{FxHashMap, FxIndexMap, FxIndexSet}; -use rustc_data_structures::steal::Steal; -use rustc_data_structures::svh::Svh; +use rustc_data_structures::fx::FxHashMap; use rustc_data_structures::sync::AtomicU64; -use rustc_data_structures::sync::Lrc; -use rustc_data_structures::sync::WorkerLocal; -use rustc_data_structures::unord::UnordSet; -use rustc_errors::ErrorGuaranteed; -use rustc_hir as hir; -use rustc_hir::def::{DefKind, DocLinkResMap}; -use rustc_hir::def_id::{ - CrateNum, DefId, DefIdMap, DefIdSet, LocalDefId, LocalDefIdMap, LocalDefIdSet, -}; +use rustc_hir::def::DefKind; +use rustc_hir::def_id::{DefId, LocalDefId}; use rustc_hir::hir_id::OwnerId; -use rustc_hir::lang_items::{LangItem, LanguageItems}; -use rustc_hir::{Crate, ItemLocalId, TraitCandidate}; -use rustc_index::IndexVec; use rustc_query_system::dep_graph::DepNodeIndex; use rustc_query_system::dep_graph::SerializedDepNodeIndex; -use rustc_query_system::ich::StableHashingContext; pub(crate) use rustc_query_system::query::QueryJobId; use rustc_query_system::query::*; use rustc_query_system::HandleCycleError; -use rustc_session::config::{EntryFnType, OptLevel, OutputFilenames, SymbolManglingVersion}; -use rustc_session::cstore::{CrateDepKind, CrateSource}; -use rustc_session::cstore::{ExternCrate, ForeignModule, LinkagePreference, NativeLib}; -use rustc_session::lint::LintExpectationId; -use rustc_session::Limits; -use rustc_span::symbol::Symbol; use rustc_span::{Span, DUMMY_SP}; -use rustc_target::abi; -use rustc_target::spec::PanicStrategy; -use std::mem; use std::ops::Deref; -use std::path::PathBuf; -use std::sync::Arc; pub struct QueryKeyStringCache { pub def_id_cache: FxHashMap<DefId, StringId>, @@ -214,7 +149,7 @@ impl<'tcx> TyCtxt<'tcx> { } #[inline] -fn query_get_at<'tcx, Cache>( +pub fn query_get_at<'tcx, Cache>( tcx: TyCtxt<'tcx>, execute_query: fn(TyCtxt<'tcx>, Span, Cache::Key, QueryMode) -> Option<Cache::Value>, query_cache: &Cache, @@ -232,7 +167,7 @@ where } #[inline] -fn query_ensure<'tcx, Cache>( +pub fn query_ensure<'tcx, Cache>( tcx: TyCtxt<'tcx>, execute_query: fn(TyCtxt<'tcx>, Span, Cache::Key, QueryMode) -> Option<Cache::Value>, query_cache: &Cache, @@ -639,9 +574,6 @@ macro_rules! define_feedable { // Queries marked with `fatal_cycle` do not need the latter implementation, // as they will raise an fatal error on query cycles instead. -rustc_query_append! { define_callbacks! } -rustc_feedable_queries! { define_feedable! } - mod sealed { use super::{DefId, LocalDefId, OwnerId}; diff --git a/compiler/rustc_middle/src/ty/relate.rs b/compiler/rustc_middle/src/ty/relate.rs index da43475941e..3bbe6a23b66 100644 --- a/compiler/rustc_middle/src/ty/relate.rs +++ b/compiler/rustc_middle/src/ty/relate.rs @@ -388,24 +388,24 @@ impl<'tcx> Relate<'tcx> for Ty<'tcx> { } } -/// The main "type relation" routine. Note that this does not handle -/// inference artifacts, so you should filter those out before calling -/// it. -pub fn super_relate_tys<'tcx, R: TypeRelation<'tcx>>( +/// Relates `a` and `b` structurally, calling the relation for all nested values. +/// Any semantic equality, e.g. of projections, and inference variables have to be +/// handled by the caller. +pub fn structurally_relate_tys<'tcx, R: TypeRelation<'tcx>>( relation: &mut R, a: Ty<'tcx>, b: Ty<'tcx>, ) -> RelateResult<'tcx, Ty<'tcx>> { let tcx = relation.tcx(); - debug!("super_relate_tys: a={:?} b={:?}", a, b); + debug!("structurally_relate_tys: a={:?} b={:?}", a, b); match (a.kind(), b.kind()) { (&ty::Infer(_), _) | (_, &ty::Infer(_)) => { // The caller should handle these cases! - bug!("var types encountered in super_relate_tys") + bug!("var types encountered in structurally_relate_tys") } (ty::Bound(..), _) | (_, ty::Bound(..)) => { - bug!("bound types encountered in super_relate_tys") + bug!("bound types encountered in structurally_relate_tys") } (&ty::Error(guar), _) | (_, &ty::Error(guar)) => Ok(tcx.ty_error(guar)), @@ -575,15 +575,18 @@ pub fn super_relate_tys<'tcx, R: TypeRelation<'tcx>>( } } -/// The main "const relation" routine. Note that this does not handle -/// inference artifacts, so you should filter those out before calling -/// it. -pub fn super_relate_consts<'tcx, R: TypeRelation<'tcx>>( +/// Relates `a` and `b` structurally, calling the relation for all nested values. +/// Any semantic equality, e.g. of unevaluated consts, and inference variables have +/// to be handled by the caller. +/// +/// FIXME: This is not totally structual, which probably should be fixed. +/// See the HACKs below. +pub fn structurally_relate_consts<'tcx, R: TypeRelation<'tcx>>( relation: &mut R, mut a: ty::Const<'tcx>, mut b: ty::Const<'tcx>, ) -> RelateResult<'tcx, ty::Const<'tcx>> { - debug!("{}.super_relate_consts(a = {:?}, b = {:?})", relation.tag(), a, b); + debug!("{}.structurally_relate_consts(a = {:?}, b = {:?})", relation.tag(), a, b); let tcx = relation.tcx(); // HACK(const_generics): We still need to eagerly evaluate consts when @@ -602,7 +605,7 @@ pub fn super_relate_consts<'tcx, R: TypeRelation<'tcx>>( b = tcx.expand_abstract_consts(b); } - debug!("{}.super_relate_consts(normed_a = {:?}, normed_b = {:?})", relation.tag(), a, b); + debug!("{}.structurally_relate_consts(normed_a = {:?}, normed_b = {:?})", relation.tag(), a, b); // Currently, the values that can be unified are primitive types, // and those that derive both `PartialEq` and `Eq`, corresponding @@ -610,7 +613,7 @@ pub fn super_relate_consts<'tcx, R: TypeRelation<'tcx>>( let is_match = match (a.kind(), b.kind()) { (ty::ConstKind::Infer(_), _) | (_, ty::ConstKind::Infer(_)) => { // The caller should handle these cases! - bug!("var types encountered in super_relate_consts: {:?} {:?}", a, b) + bug!("var types encountered in structurally_relate_consts: {:?} {:?}", a, b) } (ty::ConstKind::Error(_), _) => return Ok(a), diff --git a/compiler/rustc_middle/src/ty/util.rs b/compiler/rustc_middle/src/ty/util.rs index 9bab693156b..eb903ebfd99 100644 --- a/compiler/rustc_middle/src/ty/util.rs +++ b/compiler/rustc_middle/src/ty/util.rs @@ -2,6 +2,7 @@ use crate::middle::codegen_fn_attrs::CodegenFnAttrFlags; use crate::mir; +use crate::query::Providers; use crate::ty::layout::IntegerExt; use crate::ty::{ self, FallibleTypeFolder, ToPredicate, Ty, TyCtxt, TypeFoldable, TypeFolder, TypeSuperFoldable, @@ -667,10 +668,10 @@ impl<'tcx> TyCtxt<'tcx> { self, def_id: DefId, ) -> impl Iterator<Item = ty::EarlyBinder<Ty<'tcx>>> { - let generator_layout = &self.mir_generator_witnesses(def_id); + let generator_layout = self.mir_generator_witnesses(def_id); generator_layout - .field_tys - .iter() + .as_ref() + .map_or_else(|| [].iter(), |l| l.field_tys.iter()) .filter(|decl| !decl.ignore_for_traits) .map(|decl| ty::EarlyBinder(decl.ty)) } @@ -1484,8 +1485,8 @@ pub fn is_intrinsic(tcx: TyCtxt<'_>, def_id: LocalDefId) -> bool { matches!(tcx.fn_sig(def_id).skip_binder().abi(), Abi::RustIntrinsic | Abi::PlatformIntrinsic) } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { +pub fn provide(providers: &mut Providers) { + *providers = Providers { reveal_opaque_types_in_bounds, is_doc_hidden, is_doc_notable_trait, diff --git a/compiler/rustc_middle/src/util/bug.rs b/compiler/rustc_middle/src/util/bug.rs index 3dfd0824f98..43ee0343f5a 100644 --- a/compiler/rustc_middle/src/util/bug.rs +++ b/compiler/rustc_middle/src/util/bug.rs @@ -48,6 +48,6 @@ pub fn trigger_delay_span_bug(tcx: TyCtxt<'_>, key: rustc_hir::def_id::DefId) { ); } -pub fn provide(providers: &mut crate::ty::query::Providers) { - *providers = crate::ty::query::Providers { trigger_delay_span_bug, ..*providers }; +pub fn provide(providers: &mut crate::query::Providers) { + *providers = crate::query::Providers { trigger_delay_span_bug, ..*providers }; } diff --git a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs index 931fe1b2433..b74422708ce 100644 --- a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs +++ b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs @@ -154,6 +154,7 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> { Ok(Rvalue::BinaryOp(BinOp::Offset, Box::new((ptr, offset)))) }, @call("mir_len", args) => Ok(Rvalue::Len(self.parse_place(args[0])?)), + @call("mir_copy_for_deref", args) => Ok(Rvalue::CopyForDeref(self.parse_place(args[0])?)), ExprKind::Borrow { borrow_kind, arg } => Ok( Rvalue::Ref(self.tcx.lifetimes.re_erased, *borrow_kind, self.parse_place(*arg)?) ), diff --git a/compiler/rustc_mir_build/src/build/expr/as_constant.rs b/compiler/rustc_mir_build/src/build/expr/as_constant.rs index 59549435233..4d99ab4b0ec 100644 --- a/compiler/rustc_mir_build/src/build/expr/as_constant.rs +++ b/compiler/rustc_mir_build/src/build/expr/as_constant.rs @@ -52,7 +52,7 @@ pub fn as_constant_inner<'tcx>( match lit_to_mir_constant(tcx, LitToConstInput { lit: &lit.node, ty, neg }) { Ok(c) => c, Err(LitToConstError::Reported(guar)) => { - ConstantKind::Ty(tcx.const_error_with_guaranteed(ty, guar)) + ConstantKind::Ty(tcx.const_error(ty, guar)) } Err(LitToConstError::TypeError) => { bug!("encountered type error in `lit_to_mir_constant`") diff --git a/compiler/rustc_mir_build/src/build/matches/test.rs b/compiler/rustc_mir_build/src/build/matches/test.rs index 4536ecf17b8..dbdb5b4a9a1 100644 --- a/compiler/rustc_mir_build/src/build/matches/test.rs +++ b/compiler/rustc_mir_build/src/build/matches/test.rs @@ -380,18 +380,19 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { ); } - /// Compare two `&T` values using `<T as std::compare::PartialEq>::eq` + /// Compare two values using `<T as std::compare::PartialEq>::eq`. + /// If the values are already references, just call it directly, otherwise + /// take a reference to the values first and then call it. fn non_scalar_compare( &mut self, block: BasicBlock, make_target_blocks: impl FnOnce(&mut Self) -> Vec<BasicBlock>, source_info: SourceInfo, value: ConstantKind<'tcx>, - place: Place<'tcx>, + mut val: Place<'tcx>, mut ty: Ty<'tcx>, ) { let mut expect = self.literal_operand(source_info.span, value); - let mut val = Operand::Copy(place); // If we're using `b"..."` as a pattern, we need to insert an // unsizing coercion, as the byte string has the type `&[u8; N]`. @@ -421,9 +422,13 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { block, source_info, temp, - Rvalue::Cast(CastKind::Pointer(PointerCast::Unsize), val, ty), + Rvalue::Cast( + CastKind::Pointer(PointerCast::Unsize), + Operand::Copy(val), + ty, + ), ); - val = Operand::Move(temp); + val = temp; } if opt_ref_test_ty.is_some() { let slice = self.temp(ty, source_info.span); @@ -438,12 +443,36 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { } } - let ty::Ref(_, deref_ty, _) = *ty.kind() else { - bug!("non_scalar_compare called on non-reference type: {}", ty); - }; + match *ty.kind() { + ty::Ref(_, deref_ty, _) => ty = deref_ty, + _ => { + // non_scalar_compare called on non-reference type + let temp = self.temp(ty, source_info.span); + self.cfg.push_assign(block, source_info, temp, Rvalue::Use(expect)); + let ref_ty = self.tcx.mk_imm_ref(self.tcx.lifetimes.re_erased, ty); + let ref_temp = self.temp(ref_ty, source_info.span); + + self.cfg.push_assign( + block, + source_info, + ref_temp, + Rvalue::Ref(self.tcx.lifetimes.re_erased, BorrowKind::Shared, temp), + ); + expect = Operand::Move(ref_temp); + + let ref_temp = self.temp(ref_ty, source_info.span); + self.cfg.push_assign( + block, + source_info, + ref_temp, + Rvalue::Ref(self.tcx.lifetimes.re_erased, BorrowKind::Shared, val), + ); + val = ref_temp; + } + } let eq_def_id = self.tcx.require_lang_item(LangItem::PartialEq, Some(source_info.span)); - let method = trait_method(self.tcx, eq_def_id, sym::eq, [deref_ty, deref_ty]); + let method = trait_method(self.tcx, eq_def_id, sym::eq, [ty, ty]); let bool_ty = self.tcx.types.bool; let eq_result = self.temp(bool_ty, source_info.span); @@ -463,7 +492,7 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { literal: method, })), - args: vec![val, expect], + args: vec![Operand::Copy(val), expect], destination: eq_result, target: Some(eq_block), unwind: UnwindAction::Continue, diff --git a/compiler/rustc_mir_build/src/lib.rs b/compiler/rustc_mir_build/src/lib.rs index 2765a107cf0..c964e62c9d0 100644 --- a/compiler/rustc_mir_build/src/lib.rs +++ b/compiler/rustc_mir_build/src/lib.rs @@ -22,7 +22,7 @@ mod errors; mod lints; pub mod thir; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage}; use rustc_fluent_macro::fluent_messages; diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs index c73f8284ca5..b243f1dc8d0 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs @@ -62,21 +62,13 @@ struct ConstToPat<'tcx> { treat_byte_string_as_slice: bool, } -mod fallback_to_const_ref { - #[derive(Debug)] - /// This error type signals that we encountered a non-struct-eq situation behind a reference. - /// We bubble this up in order to get back to the reference destructuring and make that emit - /// a const pattern instead of a deref pattern. This allows us to simply call `PartialEq::eq` - /// on such patterns (since that function takes a reference) and not have to jump through any - /// hoops to get a reference to the value. - pub(super) struct FallbackToConstRef(()); - - pub(super) fn fallback_to_const_ref(c2p: &super::ConstToPat<'_>) -> FallbackToConstRef { - assert!(c2p.behind_reference.get()); - FallbackToConstRef(()) - } -} -use fallback_to_const_ref::{fallback_to_const_ref, FallbackToConstRef}; +/// This error type signals that we encountered a non-struct-eq situation. +/// We bubble this up in order to get back to the reference destructuring and make that emit +/// a const pattern instead of a deref pattern. This allows us to simply call `PartialEq::eq` +/// on such patterns (since that function takes a reference) and not have to jump through any +/// hoops to get a reference to the value. +#[derive(Debug)] +struct FallbackToConstRef; impl<'tcx> ConstToPat<'tcx> { fn new( @@ -236,13 +228,13 @@ impl<'tcx> ConstToPat<'tcx> { let kind = match cv.ty().kind() { ty::Float(_) => { - tcx.emit_spanned_lint( - lint::builtin::ILLEGAL_FLOATING_POINT_LITERAL_PATTERN, - id, - span, - FloatPattern, - ); - PatKind::Constant { value: cv } + tcx.emit_spanned_lint( + lint::builtin::ILLEGAL_FLOATING_POINT_LITERAL_PATTERN, + id, + span, + FloatPattern, + ); + return Err(FallbackToConstRef); } ty::Adt(adt_def, _) if adt_def.is_union() => { // Matching on union fields is unsafe, we can't hide it in constants @@ -289,7 +281,7 @@ impl<'tcx> ConstToPat<'tcx> { // Since we are behind a reference, we can just bubble the error up so we get a // constant at reference type, making it easy to let the fallback call // `PartialEq::eq` on it. - return Err(fallback_to_const_ref(self)); + return Err(FallbackToConstRef); } ty::Adt(adt_def, _) if !self.type_marked_structural(cv.ty()) => { debug!( @@ -393,11 +385,11 @@ impl<'tcx> ConstToPat<'tcx> { self.behind_reference.set(old); val } - // Backwards compatibility hack: support references to non-structural types. - // We'll lower - // this pattern to a `PartialEq::eq` comparison and `PartialEq::eq` takes a - // reference. This makes the rest of the matching logic simpler as it doesn't have - // to figure out how to get a reference again. + // Backwards compatibility hack: support references to non-structural types, + // but hard error if we aren't behind a double reference. We could just use + // the fallback code path below, but that would allow *more* of this fishy + // code to compile, as then it only goes through the future incompat lint + // instead of a hard error. ty::Adt(_, _) if !self.type_marked_structural(*pointee_ty) => { if self.behind_reference.get() { if !self.saw_const_match_error.get() @@ -411,7 +403,7 @@ impl<'tcx> ConstToPat<'tcx> { IndirectStructuralMatch { non_sm_ty: *pointee_ty }, ); } - PatKind::Constant { value: cv } + return Err(FallbackToConstRef); } else { if !self.saw_const_match_error.get() { self.saw_const_match_error.set(true); @@ -435,16 +427,9 @@ impl<'tcx> ConstToPat<'tcx> { PatKind::Wild } else { let old = self.behind_reference.replace(true); - // In case there are structural-match violations somewhere in this subpattern, - // we fall back to a const pattern. If we do not do this, we may end up with - // a !structural-match constant that is not of reference type, which makes it - // very hard to invoke `PartialEq::eq` on it as a fallback. - let val = match self.recur(tcx.deref_mir_constant(self.param_env.and(cv)), false) { - Ok(subpattern) => PatKind::Deref { subpattern }, - Err(_) => PatKind::Constant { value: cv }, - }; + let subpattern = self.recur(tcx.deref_mir_constant(self.param_env.and(cv)), false)?; self.behind_reference.set(old); - val + PatKind::Deref { subpattern } } } }, @@ -452,7 +437,7 @@ impl<'tcx> ConstToPat<'tcx> { PatKind::Constant { value: cv } } ty::RawPtr(pointee) if pointee.ty.is_sized(tcx, param_env) => { - PatKind::Constant { value: cv } + return Err(FallbackToConstRef); } // FIXME: these can have very surprising behaviour where optimization levels or other // compilation choices change the runtime behaviour of the match. @@ -469,7 +454,7 @@ impl<'tcx> ConstToPat<'tcx> { PointerPattern ); } - PatKind::Constant { value: cv } + return Err(FallbackToConstRef); } _ => { self.saw_const_match_error.set(true); diff --git a/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs index 9af13781312..6a77146138b 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/deconstruct_pat.rs @@ -844,8 +844,8 @@ impl<'tcx> Constructor<'tcx> { } /// Faster version of `is_covered_by` when applied to many constructors. `used_ctors` is - /// assumed to be built from `matrix.head_ctors()` with wildcards filtered out, and `self` is - /// assumed to have been split from a wildcard. + /// assumed to be built from `matrix.head_ctors()` with wildcards and opaques filtered out, + /// and `self` is assumed to have been split from a wildcard. fn is_covered_by_any<'p>( &self, pcx: &PatCtxt<'_, 'p, 'tcx>, @@ -894,7 +894,7 @@ impl<'tcx> Constructor<'tcx> { /// in `to_ctors`: in some cases we only return `Missing`. #[derive(Debug)] pub(super) struct SplitWildcard<'tcx> { - /// Constructors seen in the matrix. + /// Constructors (other than wildcards and opaques) seen in the matrix. matrix_ctors: Vec<Constructor<'tcx>>, /// All the constructors for this type all_ctors: SmallVec<[Constructor<'tcx>; 1]>, @@ -1037,7 +1037,7 @@ impl<'tcx> SplitWildcard<'tcx> { // Since `all_ctors` never contains wildcards, this won't recurse further. self.all_ctors = self.all_ctors.iter().flat_map(|ctor| ctor.split(pcx, ctors.clone())).collect(); - self.matrix_ctors = ctors.filter(|c| !c.is_wildcard()).cloned().collect(); + self.matrix_ctors = ctors.filter(|c| !matches!(c, Wildcard | Opaque)).cloned().collect(); } /// Whether there are any value constructors for this type that are not present in the matrix. diff --git a/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs b/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs index f229b10c447..e5b63506906 100644 --- a/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs +++ b/compiler/rustc_mir_build/src/thir/pattern/usefulness.rs @@ -288,6 +288,22 @@ //! //! The details are not necessary to understand this file, so we explain them in //! [`super::deconstruct_pat`]. Splitting is done by the [`Constructor::split`] function. +//! +//! # Constants in patterns +//! +//! There are two kinds of constants in patterns: +//! +//! * literals (`1`, `true`, `"foo"`) +//! * named or inline consts (`FOO`, `const { 5 + 6 }`) +//! +//! The latter are converted into other patterns with literals at the leaves. For example +//! `const_to_pat(const { [1, 2, 3] })` becomes an `Array(vec![Const(1), Const(2), Const(3)])` +//! pattern. This gets problematic when comparing the constant via `==` would behave differently +//! from matching on the constant converted to a pattern. Situations like that can occur, when +//! the user implements `PartialEq` manually, and thus could make `==` behave arbitrarily different. +//! In order to honor the `==` implementation, constants of types that implement `PartialEq` manually +//! stay as a full constant and become an `Opaque` pattern. These `Opaque` patterns do not participate +//! in exhaustiveness, specialization or overlap checking. use self::ArmType::*; use self::Usefulness::*; diff --git a/compiler/rustc_mir_transform/src/check_unsafety.rs b/compiler/rustc_mir_transform/src/check_unsafety.rs index bdb4f20da10..069514d8a3b 100644 --- a/compiler/rustc_mir_transform/src/check_unsafety.rs +++ b/compiler/rustc_mir_transform/src/check_unsafety.rs @@ -7,7 +7,7 @@ use rustc_hir::intravisit; use rustc_hir::{BlockCheckMode, ExprKind, Node}; use rustc_middle::mir::visit::{MutatingUseContext, PlaceContext, Visitor}; use rustc_middle::mir::*; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::lint::builtin::{UNSAFE_OP_IN_UNSAFE_FN, UNUSED_UNSAFE}; use rustc_session::lint::Level; diff --git a/compiler/rustc_mir_transform/src/coverage/query.rs b/compiler/rustc_mir_transform/src/coverage/query.rs index bf01b45eb40..74b4b4a07c5 100644 --- a/compiler/rustc_mir_transform/src/coverage/query.rs +++ b/compiler/rustc_mir_transform/src/coverage/query.rs @@ -2,7 +2,7 @@ use super::*; use rustc_middle::mir::coverage::*; use rustc_middle::mir::{self, Body, Coverage, CoverageInfo}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt}; use rustc_span::def_id::DefId; diff --git a/compiler/rustc_mir_transform/src/ffi_unwind_calls.rs b/compiler/rustc_mir_transform/src/ffi_unwind_calls.rs index ac1de989a72..58cc161ddcc 100644 --- a/compiler/rustc_mir_transform/src/ffi_unwind_calls.rs +++ b/compiler/rustc_mir_transform/src/ffi_unwind_calls.rs @@ -1,8 +1,8 @@ use rustc_hir::def_id::{LocalDefId, LOCAL_CRATE}; use rustc_middle::mir::*; use rustc_middle::query::LocalCrate; +use rustc_middle::query::Providers; use rustc_middle::ty::layout; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::lint::builtin::FFI_UNWIND_CALLS; use rustc_target::spec::abi::Abi; diff --git a/compiler/rustc_mir_transform/src/generator.rs b/compiler/rustc_mir_transform/src/generator.rs index c9144729145..891e446942e 100644 --- a/compiler/rustc_mir_transform/src/generator.rs +++ b/compiler/rustc_mir_transform/src/generator.rs @@ -1397,7 +1397,7 @@ fn create_cases<'tcx>( pub(crate) fn mir_generator_witnesses<'tcx>( tcx: TyCtxt<'tcx>, def_id: LocalDefId, -) -> GeneratorLayout<'tcx> { +) -> Option<GeneratorLayout<'tcx>> { assert!(tcx.sess.opts.unstable_opts.drop_tracking_mir); let (body, _) = tcx.mir_promoted(def_id); @@ -1410,6 +1410,7 @@ pub(crate) fn mir_generator_witnesses<'tcx>( // Get the interior types and substs which typeck computed let movable = match *gen_ty.kind() { ty::Generator(_, _, movability) => movability == hir::Movability::Movable, + ty::Error(_) => return None, _ => span_bug!(body.span, "unexpected generator type {}", gen_ty), }; @@ -1425,7 +1426,7 @@ pub(crate) fn mir_generator_witnesses<'tcx>( check_suspend_tys(tcx, &generator_layout, &body); - generator_layout + Some(generator_layout) } impl<'tcx> MirPass<'tcx> for StateTransform { diff --git a/compiler/rustc_mir_transform/src/lib.rs b/compiler/rustc_mir_transform/src/lib.rs index 277237a5515..65864dc016f 100644 --- a/compiler/rustc_mir_transform/src/lib.rs +++ b/compiler/rustc_mir_transform/src/lib.rs @@ -34,7 +34,7 @@ use rustc_middle::mir::{ MirPhase, Operand, Place, ProjectionElem, Promoted, RuntimePhase, Rvalue, SourceInfo, Statement, StatementKind, TerminatorKind, START_BLOCK, }; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt}; use rustc_span::sym; use rustc_trait_selection::traits; diff --git a/compiler/rustc_mir_transform/src/shim.rs b/compiler/rustc_mir_transform/src/shim.rs index 19d07fab0b9..7c47d8814db 100644 --- a/compiler/rustc_mir_transform/src/shim.rs +++ b/compiler/rustc_mir_transform/src/shim.rs @@ -2,7 +2,7 @@ use rustc_hir as hir; use rustc_hir::def_id::DefId; use rustc_hir::lang_items::LangItem; use rustc_middle::mir::*; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::InternalSubsts; use rustc_middle::ty::{self, EarlyBinder, GeneratorSubsts, Ty, TyCtxt}; use rustc_target::abi::{FieldIdx, VariantIdx, FIRST_VARIANT}; diff --git a/compiler/rustc_monomorphize/src/lib.rs b/compiler/rustc_monomorphize/src/lib.rs index 7253acf61e6..1c18e6b0b02 100644 --- a/compiler/rustc_monomorphize/src/lib.rs +++ b/compiler/rustc_monomorphize/src/lib.rs @@ -12,9 +12,10 @@ extern crate rustc_middle; use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage}; use rustc_fluent_macro::fluent_messages; use rustc_hir::lang_items::LangItem; +use rustc_middle::query::Providers; use rustc_middle::traits; use rustc_middle::ty::adjustment::CustomCoerceUnsized; -use rustc_middle::ty::query::{Providers, TyCtxtAt}; +use rustc_middle::ty::query::TyCtxtAt; use rustc_middle::ty::{self, Ty}; mod collector; diff --git a/compiler/rustc_monomorphize/src/partitioning/mod.rs b/compiler/rustc_monomorphize/src/partitioning/mod.rs index 993e35c7fd2..c10180ee3f4 100644 --- a/compiler/rustc_monomorphize/src/partitioning/mod.rs +++ b/compiler/rustc_monomorphize/src/partitioning/mod.rs @@ -106,8 +106,8 @@ use rustc_hir::def_id::{DefIdSet, LOCAL_CRATE}; use rustc_middle::mir; use rustc_middle::mir::mono::MonoItem; use rustc_middle::mir::mono::{CodegenUnit, Linkage}; +use rustc_middle::query::Providers; use rustc_middle::ty::print::with_no_trimmed_paths; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::config::{DumpMonoStatsFormat, SwitchWithOptPath}; use rustc_span::symbol::Symbol; diff --git a/compiler/rustc_monomorphize/src/polymorphize.rs b/compiler/rustc_monomorphize/src/polymorphize.rs index ddc62d9c390..88a3e028527 100644 --- a/compiler/rustc_monomorphize/src/polymorphize.rs +++ b/compiler/rustc_monomorphize/src/polymorphize.rs @@ -11,9 +11,9 @@ use rustc_middle::mir::{ visit::{TyContext, Visitor}, Constant, ConstantKind, Local, LocalDecl, Location, }; +use rustc_middle::query::Providers; use rustc_middle::ty::{ self, - query::Providers, subst::SubstsRef, visit::{TypeSuperVisitable, TypeVisitable, TypeVisitableExt, TypeVisitor}, Const, Ty, TyCtxt, UnusedGenericParams, diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index 887e155426f..ee712a8e1b5 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -1180,6 +1180,10 @@ impl<'a> Parser<'a> { self.restore_snapshot(snapshot); let close_paren = self.prev_token.span; let span = lo.to(close_paren); + // filter shorthand fields + let fields: Vec<_> = + fields.into_iter().filter(|field| !field.is_shorthand).collect(); + if !fields.is_empty() && // `token.kind` should not be compared here. // This is because the `snapshot.token.kind` is treated as the same as diff --git a/compiler/rustc_parse/src/parser/generics.rs b/compiler/rustc_parse/src/parser/generics.rs index e6d0f9fbc76..cd779b0b43e 100644 --- a/compiler/rustc_parse/src/parser/generics.rs +++ b/compiler/rustc_parse/src/parser/generics.rs @@ -453,6 +453,8 @@ impl<'a> Parser<'a> { // `<` (LIFETIME|IDENT) `:` - generic parameter with bounds // `<` (LIFETIME|IDENT) `=` - generic parameter with a default // `<` const - generic const parameter + // `<` IDENT `?` - RECOVERY for `impl<T ?Bound` missing a `:`, meant to + // avoid the `T?` to `Option<T>` recovery for types. // The only truly ambiguous case is // `<` IDENT `>` `::` IDENT ... // we disambiguate it in favor of generics (`impl<T> ::absolute::Path<T> { ... }`) @@ -463,6 +465,9 @@ impl<'a> Parser<'a> { || self.look_ahead(start + 1, |t| t.is_lifetime() || t.is_ident()) && self.look_ahead(start + 2, |t| { matches!(t.kind, token::Gt | token::Comma | token::Colon | token::Eq) + // Recovery-only branch -- this could be removed, + // since it only affects diagnostics currently. + || matches!(t.kind, token::Question) }) || self.is_keyword_ahead(start + 1, &[kw::Const])) } diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs index 06aa2737915..455d7b89f9c 100644 --- a/compiler/rustc_passes/src/check_attr.rs +++ b/compiler/rustc_passes/src/check_attr.rs @@ -19,9 +19,9 @@ use rustc_hir::{ use rustc_hir::{MethodKind, Target, Unsafety}; use rustc_middle::hir::nested_filter; use rustc_middle::middle::resolve_bound_vars::ObjectLifetimeDefault; +use rustc_middle::query::Providers; use rustc_middle::traits::ObligationCause; use rustc_middle::ty::error::{ExpectedFound, TypeError}; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::lint::builtin::{ CONFLICTING_REPR_HINTS, INVALID_DOC_ATTRIBUTES, INVALID_MACRO_EXPORT_ARGUMENTS, diff --git a/compiler/rustc_passes/src/check_const.rs b/compiler/rustc_passes/src/check_const.rs index 6742722ce52..2357b0aadef 100644 --- a/compiler/rustc_passes/src/check_const.rs +++ b/compiler/rustc_passes/src/check_const.rs @@ -12,7 +12,7 @@ use rustc_hir as hir; use rustc_hir::def_id::LocalDefId; use rustc_hir::intravisit::{self, Visitor}; use rustc_middle::hir::nested_filter; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::parse::feature_err; use rustc_span::{sym, Span, Symbol}; diff --git a/compiler/rustc_passes/src/dead.rs b/compiler/rustc_passes/src/dead.rs index 3ae5b45d330..7812dcde44c 100644 --- a/compiler/rustc_passes/src/dead.rs +++ b/compiler/rustc_passes/src/dead.rs @@ -12,7 +12,7 @@ use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{Node, PatKind, TyKind}; use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; use rustc_middle::middle::privacy::Level; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::lint; use rustc_span::symbol::{sym, Symbol}; diff --git a/compiler/rustc_passes/src/debugger_visualizer.rs b/compiler/rustc_passes/src/debugger_visualizer.rs index 72371b9950b..8ea95b3f383 100644 --- a/compiler/rustc_passes/src/debugger_visualizer.rs +++ b/compiler/rustc_passes/src/debugger_visualizer.rs @@ -6,8 +6,8 @@ use rustc_data_structures::sync::Lrc; use rustc_expand::base::resolve_path; use rustc_hir as hir; use rustc_hir::HirId; +use rustc_middle::query::{LocalCrate, Providers}; use rustc_middle::ty::TyCtxt; -use rustc_middle::{query::LocalCrate, ty::query::Providers}; use rustc_span::{sym, DebuggerVisualizerFile, DebuggerVisualizerType}; use crate::errors::DebugVisualizerUnreadable; diff --git a/compiler/rustc_passes/src/diagnostic_items.rs b/compiler/rustc_passes/src/diagnostic_items.rs index eb6ea673c85..d8b9f4fae87 100644 --- a/compiler/rustc_passes/src/diagnostic_items.rs +++ b/compiler/rustc_passes/src/diagnostic_items.rs @@ -13,7 +13,7 @@ use rustc_ast as ast; use rustc_hir::diagnostic_items::DiagnosticItems; use rustc_hir::OwnerId; use rustc_middle::query::LocalCrate; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_span::def_id::{DefId, LOCAL_CRATE}; use rustc_span::symbol::{sym, Symbol}; diff --git a/compiler/rustc_passes/src/entry.rs b/compiler/rustc_passes/src/entry.rs index e3e4b73efa3..ffd8f77b78b 100644 --- a/compiler/rustc_passes/src/entry.rs +++ b/compiler/rustc_passes/src/entry.rs @@ -4,7 +4,7 @@ use rustc_errors::error_code; use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID, LOCAL_CRATE}; use rustc_hir::{ItemId, Node, CRATE_HIR_ID}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::config::{sigpipe, CrateType, EntryFnType}; use rustc_session::parse::feature_err; diff --git a/compiler/rustc_passes/src/lang_items.rs b/compiler/rustc_passes/src/lang_items.rs index fdd0e5dab70..476394f30cc 100644 --- a/compiler/rustc_passes/src/lang_items.rs +++ b/compiler/rustc_passes/src/lang_items.rs @@ -22,7 +22,7 @@ use rustc_middle::ty::TyCtxt; use rustc_session::cstore::ExternCrate; use rustc_span::{symbol::kw::Empty, Span}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; pub(crate) enum Duplicate { Plain, diff --git a/compiler/rustc_passes/src/lib.rs b/compiler/rustc_passes/src/lib.rs index 8b7338e29aa..0da4b294648 100644 --- a/compiler/rustc_passes/src/lib.rs +++ b/compiler/rustc_passes/src/lib.rs @@ -22,7 +22,7 @@ extern crate tracing; use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage}; use rustc_fluent_macro::fluent_messages; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; mod check_attr; mod check_const; diff --git a/compiler/rustc_passes/src/lib_features.rs b/compiler/rustc_passes/src/lib_features.rs index f4da1aaec11..44174b1b89d 100644 --- a/compiler/rustc_passes/src/lib_features.rs +++ b/compiler/rustc_passes/src/lib_features.rs @@ -9,7 +9,7 @@ use rustc_attr::{rust_version_symbol, VERSION_PLACEHOLDER}; use rustc_hir::intravisit::Visitor; use rustc_middle::hir::nested_filter; use rustc_middle::middle::lib_features::LibFeatures; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_span::symbol::Symbol; use rustc_span::{sym, Span}; diff --git a/compiler/rustc_passes/src/liveness.rs b/compiler/rustc_passes/src/liveness.rs index 6758024419d..63b1578d43f 100644 --- a/compiler/rustc_passes/src/liveness.rs +++ b/compiler/rustc_passes/src/liveness.rs @@ -94,7 +94,7 @@ use rustc_hir::def_id::LocalDefId; use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{Expr, HirId, HirIdMap, HirIdSet}; use rustc_index::IndexVec; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, RootVariableMinCaptureList, Ty, TyCtxt}; use rustc_session::lint; use rustc_span::symbol::{kw, sym, Symbol}; diff --git a/compiler/rustc_passes/src/loops.rs b/compiler/rustc_passes/src/loops.rs index b4cf19e4a34..73cfe68e7f2 100644 --- a/compiler/rustc_passes/src/loops.rs +++ b/compiler/rustc_passes/src/loops.rs @@ -6,7 +6,7 @@ use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{Destination, Movability, Node}; use rustc_middle::hir::map::Map; use rustc_middle::hir::nested_filter; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::Session; use rustc_span::hygiene::DesugaringKind; diff --git a/compiler/rustc_passes/src/naked_functions.rs b/compiler/rustc_passes/src/naked_functions.rs index cf8d9300a11..a849d61edfe 100644 --- a/compiler/rustc_passes/src/naked_functions.rs +++ b/compiler/rustc_passes/src/naked_functions.rs @@ -6,7 +6,7 @@ use rustc_hir::def::DefKind; use rustc_hir::def_id::LocalDefId; use rustc_hir::intravisit::Visitor; use rustc_hir::{ExprKind, InlineAsmOperand, StmtKind}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_session::lint::builtin::UNDEFINED_NAKED_FUNCTION_ABI; use rustc_span::symbol::sym; diff --git a/compiler/rustc_passes/src/reachable.rs b/compiler/rustc_passes/src/reachable.rs index a5f7b07fe52..160528e4074 100644 --- a/compiler/rustc_passes/src/reachable.rs +++ b/compiler/rustc_passes/src/reachable.rs @@ -13,7 +13,7 @@ use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::Node; use rustc_middle::middle::codegen_fn_attrs::{CodegenFnAttrFlags, CodegenFnAttrs}; use rustc_middle::middle::privacy::{self, Level}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, TyCtxt}; use rustc_session::config::CrateType; use rustc_target::spec::abi::Abi; diff --git a/compiler/rustc_passes/src/stability.rs b/compiler/rustc_passes/src/stability.rs index 9615f283ff4..f9060328f48 100644 --- a/compiler/rustc_passes/src/stability.rs +++ b/compiler/rustc_passes/src/stability.rs @@ -16,7 +16,8 @@ use rustc_hir::{FieldDef, Item, ItemKind, TraitRef, Ty, TyKind, Variant}; use rustc_middle::hir::nested_filter; use rustc_middle::middle::privacy::EffectiveVisibilities; use rustc_middle::middle::stability::{AllowUnstable, DeprecationEntry, Index}; -use rustc_middle::ty::{query::Providers, TyCtxt}; +use rustc_middle::query::Providers; +use rustc_middle::ty::TyCtxt; use rustc_session::lint; use rustc_session::lint::builtin::{INEFFECTIVE_UNSTABLE_TRAIT_IMPL, USELESS_DEPRECATED}; use rustc_span::symbol::{sym, Symbol}; diff --git a/compiler/rustc_passes/src/upvars.rs b/compiler/rustc_passes/src/upvars.rs index 605cf0a93b8..d87df706cc8 100644 --- a/compiler/rustc_passes/src/upvars.rs +++ b/compiler/rustc_passes/src/upvars.rs @@ -5,7 +5,7 @@ use rustc_hir as hir; use rustc_hir::def::Res; use rustc_hir::intravisit::{self, Visitor}; use rustc_hir::{self, HirId}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::TyCtxt; use rustc_span::Span; diff --git a/compiler/rustc_privacy/src/lib.rs b/compiler/rustc_privacy/src/lib.rs index 817f304e8ef..7b39cb0a068 100644 --- a/compiler/rustc_privacy/src/lib.rs +++ b/compiler/rustc_privacy/src/lib.rs @@ -26,8 +26,8 @@ use rustc_hir::{AssocItemKind, HirIdSet, ItemId, Node, PatKind}; use rustc_middle::bug; use rustc_middle::hir::nested_filter; use rustc_middle::middle::privacy::{EffectiveVisibilities, EffectiveVisibility, Level}; +use rustc_middle::query::Providers; use rustc_middle::span_bug; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::subst::InternalSubsts; use rustc_middle::ty::{self, Const, GenericParamDefKind}; use rustc_middle::ty::{TraitRef, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitor}; diff --git a/compiler/rustc_query_impl/src/lib.rs b/compiler/rustc_query_impl/src/lib.rs index 39ca4659541..5ca102a0946 100644 --- a/compiler/rustc_query_impl/src/lib.rs +++ b/compiler/rustc_query_impl/src/lib.rs @@ -25,11 +25,11 @@ use rustc_middle::dep_graph::{self, DepKind, DepKindStruct}; use rustc_middle::query::erase::{erase, restore, Erase}; use rustc_middle::query::on_disk_cache::OnDiskCache; use rustc_middle::query::AsLocalKey; -use rustc_middle::ty::query::{ +use rustc_middle::query::{ query_keys, query_provided, query_provided_to_value, query_storage, query_values, - DynamicQueries, DynamicQuery, ExternProviders, Providers, QueryCaches, QueryEngine, - QueryStates, QuerySystem, QuerySystemFns, + DynamicQueries, ExternProviders, Providers, QueryCaches, QueryEngine, QueryStates, }; +use rustc_middle::ty::query::{DynamicQuery, QuerySystem, QuerySystemFns}; use rustc_middle::ty::TyCtxt; use rustc_query_system::dep_graph::SerializedDepNodeIndex; use rustc_query_system::ich::StableHashingContext; diff --git a/compiler/rustc_resolve/src/late.rs b/compiler/rustc_resolve/src/late.rs index 44e277c99b9..c053ea222a0 100644 --- a/compiler/rustc_resolve/src/late.rs +++ b/compiler/rustc_resolve/src/late.rs @@ -3543,10 +3543,6 @@ impl<'a: 'ast, 'b, 'ast, 'tcx> LateResolutionVisitor<'a, 'b, 'ast, 'tcx> { // // Similar thing, for types, happens in `report_errors` above. let report_errors_for_call = |this: &mut Self, parent_err: Spanned<ResolutionError<'a>>| { - if !source.is_call() { - return Some(parent_err); - } - // Before we start looking for candidates, we have to get our hands // on the type user is trying to perform invocation on; basically: // we're transforming `HashMap::new` into just `HashMap`. diff --git a/compiler/rustc_resolve/src/lib.rs b/compiler/rustc_resolve/src/lib.rs index c12dc2f5d92..323b78fcd98 100644 --- a/compiler/rustc_resolve/src/lib.rs +++ b/compiler/rustc_resolve/src/lib.rs @@ -47,6 +47,7 @@ use rustc_index::IndexVec; use rustc_metadata::creader::{CStore, CrateLoader}; use rustc_middle::metadata::ModChild; use rustc_middle::middle::privacy::EffectiveVisibilities; +use rustc_middle::query::Providers; use rustc_middle::span_bug; use rustc_middle::ty::{self, MainDefinition, RegisteredTools, TyCtxt}; use rustc_middle::ty::{ResolverGlobalCtxt, ResolverOutputs}; @@ -2026,6 +2027,6 @@ impl Finalize { } } -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { providers.registered_tools = macros::registered_tools; } diff --git a/compiler/rustc_serialize/src/opaque.rs b/compiler/rustc_serialize/src/opaque.rs index 6b559cb5b2f..0ffc537eee0 100644 --- a/compiler/rustc_serialize/src/opaque.rs +++ b/compiler/rustc_serialize/src/opaque.rs @@ -1,4 +1,4 @@ -use crate::leb128::{self, largest_max_leb128_len}; +use crate::leb128; use crate::serialize::{Decodable, Decoder, Encodable, Encoder}; use std::fs::File; use std::io::{self, Write}; @@ -14,6 +14,9 @@ use std::ptr; pub type FileEncodeResult = Result<usize, io::Error>; +/// The size of the buffer in `FileEncoder`. +const BUF_SIZE: usize = 8192; + /// `FileEncoder` encodes data to file via fixed-size buffer. /// /// There used to be a `MemEncoder` type that encoded all the data into a @@ -35,26 +38,12 @@ pub struct FileEncoder { impl FileEncoder { pub fn new<P: AsRef<Path>>(path: P) -> io::Result<Self> { - const DEFAULT_BUF_SIZE: usize = 8192; - FileEncoder::with_capacity(path, DEFAULT_BUF_SIZE) - } - - pub fn with_capacity<P: AsRef<Path>>(path: P, capacity: usize) -> io::Result<Self> { - // Require capacity at least as large as the largest LEB128 encoding - // here, so that we don't have to check or handle this on every write. - assert!(capacity >= largest_max_leb128_len()); - - // Require capacity small enough such that some capacity checks can be - // done using guaranteed non-overflowing add rather than sub, which - // shaves an instruction off those code paths (on x86 at least). - assert!(capacity <= usize::MAX - largest_max_leb128_len()); - // Create the file for reading and writing, because some encoders do both // (e.g. the metadata encoder when -Zmeta-stats is enabled) let file = File::options().read(true).write(true).create(true).truncate(true).open(path)?; Ok(FileEncoder { - buf: Box::new_uninit_slice(capacity), + buf: Box::new_uninit_slice(BUF_SIZE), buffered: 0, flushed: 0, file, @@ -160,18 +149,10 @@ impl FileEncoder { } #[inline] - fn capacity(&self) -> usize { - self.buf.len() - } - - #[inline] fn write_one(&mut self, value: u8) { - // We ensure this during `FileEncoder` construction. - debug_assert!(self.capacity() >= 1); - let mut buffered = self.buffered; - if std::intrinsics::unlikely(buffered >= self.capacity()) { + if std::intrinsics::unlikely(buffered + 1 > BUF_SIZE) { self.flush(); buffered = 0; } @@ -187,13 +168,12 @@ impl FileEncoder { #[inline] fn write_all(&mut self, buf: &[u8]) { - let capacity = self.capacity(); let buf_len = buf.len(); - if std::intrinsics::likely(buf_len <= capacity) { + if std::intrinsics::likely(buf_len <= BUF_SIZE) { let mut buffered = self.buffered; - if std::intrinsics::unlikely(buf_len > capacity - buffered) { + if std::intrinsics::unlikely(buffered + buf_len > BUF_SIZE) { self.flush(); buffered = 0; } @@ -271,13 +251,11 @@ macro_rules! write_leb128 { fn $this_fn(&mut self, v: $int_ty) { const MAX_ENCODED_LEN: usize = $crate::leb128::max_leb128_len::<$int_ty>(); - // We ensure this during `FileEncoder` construction. - debug_assert!(self.capacity() >= MAX_ENCODED_LEN); - let mut buffered = self.buffered; - // This can't overflow. See assertion in `FileEncoder::with_capacity`. - if std::intrinsics::unlikely(buffered + MAX_ENCODED_LEN > self.capacity()) { + // This can't overflow because BUF_SIZE and MAX_ENCODED_LEN are both + // quite small. + if std::intrinsics::unlikely(buffered + MAX_ENCODED_LEN > BUF_SIZE) { self.flush(); buffered = 0; } diff --git a/compiler/rustc_span/src/lib.rs b/compiler/rustc_span/src/lib.rs index 7bbab34c69a..97cb734619e 100644 --- a/compiler/rustc_span/src/lib.rs +++ b/compiler/rustc_span/src/lib.rs @@ -20,6 +20,7 @@ #![feature(min_specialization)] #![feature(rustc_attrs)] #![feature(let_chains)] +#![feature(round_char_boundary)] #![deny(rustc::untranslatable_diagnostic)] #![deny(rustc::diagnostic_outside_of_impl)] diff --git a/compiler/rustc_span/src/source_map.rs b/compiler/rustc_span/src/source_map.rs index 8238a16969d..11ea5fe4ddf 100644 --- a/compiler/rustc_span/src/source_map.rs +++ b/compiler/rustc_span/src/source_map.rs @@ -1019,36 +1019,19 @@ impl SourceMap { let src = local_begin.sf.external_src.borrow(); - // We need to extend the snippet to the end of the src rather than to end_index so when - // searching forwards for boundaries we've got somewhere to search. - let snippet = if let Some(ref src) = local_begin.sf.src { - &src[start_index..] + let snippet = if let Some(src) = &local_begin.sf.src { + src } else if let Some(src) = src.get_source() { - &src[start_index..] + src } else { return 1; }; - debug!("snippet=`{:?}`", snippet); - let mut target = if forwards { end_index + 1 } else { end_index - 1 }; - debug!("initial target=`{:?}`", target); - - while !snippet.is_char_boundary(target - start_index) && target < source_len { - target = if forwards { - target + 1 - } else { - match target.checked_sub(1) { - Some(target) => target, - None => { - break; - } - } - }; - debug!("target=`{:?}`", target); + if forwards { + (snippet.ceil_char_boundary(end_index + 1) - end_index) as u32 + } else { + (end_index - snippet.floor_char_boundary(end_index - 1)) as u32 } - debug!("final target=`{:?}`", target); - - if forwards { (target - end_index) as u32 } else { (end_index - target) as u32 } } pub fn get_source_file(&self, filename: &FileName) -> Option<Lrc<SourceFile>> { diff --git a/compiler/rustc_symbol_mangling/src/lib.rs b/compiler/rustc_symbol_mangling/src/lib.rs index c97406868b6..692542da78e 100644 --- a/compiler/rustc_symbol_mangling/src/lib.rs +++ b/compiler/rustc_symbol_mangling/src/lib.rs @@ -107,7 +107,7 @@ use rustc_hir::def_id::{CrateNum, LOCAL_CRATE}; use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrFlags; use rustc_middle::middle::codegen_fn_attrs::CodegenFnAttrs; use rustc_middle::mir::mono::{InstantiationMode, MonoItem}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::subst::SubstsRef; use rustc_middle::ty::{self, Instance, TyCtxt}; use rustc_session::config::SymbolManglingVersion; diff --git a/compiler/rustc_trait_selection/src/solve/project_goals.rs b/compiler/rustc_trait_selection/src/solve/project_goals.rs index 20ce2d9416e..d3228074421 100644 --- a/compiler/rustc_trait_selection/src/solve/project_goals.rs +++ b/compiler/rustc_trait_selection/src/solve/project_goals.rs @@ -124,10 +124,24 @@ impl<'tcx> assembly::GoalKind<'tcx> for ProjectionPredicate<'tcx> { }; if !assoc_def.item.defaultness(tcx).has_value() { - tcx.sess.delay_span_bug( + let guar = tcx.sess.delay_span_bug( tcx.def_span(assoc_def.item.def_id), "missing value for assoc item in impl", ); + let error_term = match assoc_def.item.kind { + ty::AssocKind::Const => tcx + .const_error( + tcx.type_of(goal.predicate.def_id()) + .subst(tcx, goal.predicate.projection_ty.substs), + guar, + ) + .into(), + ty::AssocKind::Type => tcx.ty_error(guar).into(), + ty::AssocKind::Fn => unreachable!(), + }; + ecx.eq(goal.param_env, goal.predicate.term, error_term) + .expect("expected goal term to be fully unconstrained"); + return ecx.evaluate_added_goals_and_make_canonical_response(Certainty::Yes); } // Getting the right substitutions here is complex, e.g. given: diff --git a/compiler/rustc_trait_selection/src/traits/auto_trait.rs b/compiler/rustc_trait_selection/src/traits/auto_trait.rs index 6b080a132f3..183c2401fc3 100644 --- a/compiler/rustc_trait_selection/src/traits/auto_trait.rs +++ b/compiler/rustc_trait_selection/src/traits/auto_trait.rs @@ -801,7 +801,7 @@ impl<'tcx> AutoTraitFinder<'tcx> { span: tcx.def_span(unevaluated.def), unevaluated: unevaluated, }); - Err(ErrorHandled::Reported(reported)) + Err(ErrorHandled::Reported(reported.into())) } Err(err) => Err(err), } diff --git a/compiler/rustc_trait_selection/src/traits/const_evaluatable.rs b/compiler/rustc_trait_selection/src/traits/const_evaluatable.rs index 9d99d30d45c..bd1ea43a78e 100644 --- a/compiler/rustc_trait_selection/src/traits/const_evaluatable.rs +++ b/compiler/rustc_trait_selection/src/traits/const_evaluatable.rs @@ -79,7 +79,7 @@ pub fn is_const_evaluatable<'tcx>( "Missing value for constant, but no error reported?", ))) } - Err(ErrorHandled::Reported(e)) => Err(NotConstEvaluatable::Error(e)), + Err(ErrorHandled::Reported(e)) => Err(NotConstEvaluatable::Error(e.into())), Ok(_) => Ok(()), } } @@ -147,7 +147,7 @@ pub fn is_const_evaluatable<'tcx>( Err(err) } - Err(ErrorHandled::Reported(e)) => Err(NotConstEvaluatable::Error(e)), + Err(ErrorHandled::Reported(e)) => Err(NotConstEvaluatable::Error(e.into())), Ok(_) => Ok(()), } } diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs index 49b309abcda..ea17f23434b 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs @@ -2447,10 +2447,9 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { && generator_did.is_local() // Try to avoid cycles. && !generator_within_in_progress_typeck + && let Some(generator_info) = self.tcx.mir_generator_witnesses(generator_did) { - let generator_info = &self.tcx.mir_generator_witnesses(generator_did); debug!(?generator_info); - 'find_source: for (variant, source_info) in generator_info.variant_fields.iter().zip(&generator_info.variant_source_info) { diff --git a/compiler/rustc_trait_selection/src/traits/fulfill.rs b/compiler/rustc_trait_selection/src/traits/fulfill.rs index 43196d1e629..2f85c32b575 100644 --- a/compiler/rustc_trait_selection/src/traits/fulfill.rs +++ b/compiler/rustc_trait_selection/src/traits/fulfill.rs @@ -615,7 +615,7 @@ impl<'a, 'tcx> ObligationProcessor for FulfillProcessor<'a, 'tcx> { (Err(ErrorHandled::Reported(reported)), _) | (_, Err(ErrorHandled::Reported(reported))) => ProcessResult::Error( CodeSelectionError(SelectionError::NotConstEvaluatable( - NotConstEvaluatable::Error(reported), + NotConstEvaluatable::Error(reported.into()), )), ), (Err(ErrorHandled::TooGeneric), _) | (_, Err(ErrorHandled::TooGeneric)) => { diff --git a/compiler/rustc_trait_selection/src/traits/mod.rs b/compiler/rustc_trait_selection/src/traits/mod.rs index 38daca5377a..223cdc48f0b 100644 --- a/compiler/rustc_trait_selection/src/traits/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/mod.rs @@ -26,6 +26,7 @@ use crate::infer::{InferCtxt, TyCtxtInferExt}; use crate::traits::error_reporting::TypeErrCtxtExt as _; use crate::traits::query::evaluate_obligation::InferCtxtExt as _; use rustc_errors::ErrorGuaranteed; +use rustc_middle::query::Providers; use rustc_middle::ty::fold::TypeFoldable; use rustc_middle::ty::visit::{TypeVisitable, TypeVisitableExt}; use rustc_middle::ty::{self, ToPredicate, Ty, TyCtxt, TypeSuperVisitable}; @@ -498,10 +499,10 @@ fn is_impossible_method(tcx: TyCtxt<'_>, (impl_def_id, trait_item_def_id): (DefI false } -pub fn provide(providers: &mut ty::query::Providers) { +pub fn provide(providers: &mut Providers) { object_safety::provide(providers); vtable::provide(providers); - *providers = ty::query::Providers { + *providers = Providers { specialization_graph_of: specialize::specialization_graph_provider, specializes: specialize::specializes, subst_and_check_impossible_predicates, diff --git a/compiler/rustc_trait_selection/src/traits/object_safety.rs b/compiler/rustc_trait_selection/src/traits/object_safety.rs index 06d9c10386e..c81bf6ebc2e 100644 --- a/compiler/rustc_trait_selection/src/traits/object_safety.rs +++ b/compiler/rustc_trait_selection/src/traits/object_safety.rs @@ -16,6 +16,7 @@ use crate::traits::{self, Obligation, ObligationCause}; use rustc_errors::{DelayDm, FatalError, MultiSpan}; use rustc_hir as hir; use rustc_hir::def_id::DefId; +use rustc_middle::query::Providers; use rustc_middle::ty::subst::{GenericArg, InternalSubsts}; use rustc_middle::ty::{ self, EarlyBinder, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitor, @@ -947,7 +948,6 @@ pub fn contains_illegal_impl_trait_in_trait<'tcx>( }) } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = - ty::query::Providers { object_safety_violations, check_is_object_safe, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { object_safety_violations, check_is_object_safe, ..*providers }; } diff --git a/compiler/rustc_trait_selection/src/traits/vtable.rs b/compiler/rustc_trait_selection/src/traits/vtable.rs index f7a3126b4aa..cc674ceee3d 100644 --- a/compiler/rustc_trait_selection/src/traits/vtable.rs +++ b/compiler/rustc_trait_selection/src/traits/vtable.rs @@ -4,6 +4,7 @@ use rustc_hir::def_id::DefId; use rustc_hir::lang_items::LangItem; use rustc_infer::traits::util::PredicateSet; use rustc_infer::traits::ImplSource; +use rustc_middle::query::Providers; use rustc_middle::ty::visit::TypeVisitableExt; use rustc_middle::ty::InternalSubsts; use rustc_middle::ty::{self, GenericParamDefKind, ToPredicate, Ty, TyCtxt, VtblEntry}; @@ -379,8 +380,8 @@ pub(crate) fn count_own_vtable_entries<'tcx>( tcx.own_existential_vtable_entries(trait_ref.def_id()).len() } -pub(super) fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { +pub(super) fn provide(providers: &mut Providers) { + *providers = Providers { own_existential_vtable_entries, vtable_entries, vtable_trait_upcasting_coercion_new_vptr_slot, diff --git a/compiler/rustc_traits/src/chalk/mod.rs b/compiler/rustc_traits/src/chalk/mod.rs index a5ebc26a8bc..8834449c9a4 100644 --- a/compiler/rustc_traits/src/chalk/mod.rs +++ b/compiler/rustc_traits/src/chalk/mod.rs @@ -7,8 +7,8 @@ pub(crate) mod db; pub(crate) mod lowering; use rustc_middle::infer::canonical::{CanonicalTyVarKind, CanonicalVarKind}; +use rustc_middle::query::Providers; use rustc_middle::traits::ChalkRustInterner; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, TyCtxt, TypeFoldable, TypeVisitable}; use rustc_infer::infer::canonical::{ diff --git a/compiler/rustc_traits/src/dropck_outlives.rs b/compiler/rustc_traits/src/dropck_outlives.rs index fcdffc7468b..83f6c7d07fe 100644 --- a/compiler/rustc_traits/src/dropck_outlives.rs +++ b/compiler/rustc_traits/src/dropck_outlives.rs @@ -2,7 +2,7 @@ use rustc_data_structures::fx::FxHashSet; use rustc_hir::def_id::DefId; use rustc_infer::infer::canonical::{Canonical, QueryResponse}; use rustc_infer::infer::TyCtxtInferExt; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::InternalSubsts; use rustc_middle::ty::{self, EarlyBinder, ParamEnvAnd, Ty, TyCtxt}; use rustc_span::source_map::{Span, DUMMY_SP}; diff --git a/compiler/rustc_traits/src/evaluate_obligation.rs b/compiler/rustc_traits/src/evaluate_obligation.rs index e94c8efe69a..149dffc7e31 100644 --- a/compiler/rustc_traits/src/evaluate_obligation.rs +++ b/compiler/rustc_traits/src/evaluate_obligation.rs @@ -1,5 +1,5 @@ use rustc_infer::infer::{DefiningAnchor, TyCtxtInferExt}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{ParamEnvAnd, TyCtxt}; use rustc_span::source_map::DUMMY_SP; use rustc_trait_selection::traits::query::CanonicalPredicateGoal; diff --git a/compiler/rustc_traits/src/implied_outlives_bounds.rs b/compiler/rustc_traits/src/implied_outlives_bounds.rs index f5bba14d2fb..0c2bb863e1f 100644 --- a/compiler/rustc_traits/src/implied_outlives_bounds.rs +++ b/compiler/rustc_traits/src/implied_outlives_bounds.rs @@ -6,7 +6,7 @@ use rustc_infer::infer::canonical::{self, Canonical}; use rustc_infer::infer::outlives::components::{push_outlives_components, Component}; use rustc_infer::infer::TyCtxtInferExt; use rustc_infer::traits::query::OutlivesBound; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitableExt}; use rustc_span::def_id::CRATE_DEF_ID; use rustc_span::source_map::DUMMY_SP; diff --git a/compiler/rustc_traits/src/lib.rs b/compiler/rustc_traits/src/lib.rs index 8bea5588ae7..b0f9c57154f 100644 --- a/compiler/rustc_traits/src/lib.rs +++ b/compiler/rustc_traits/src/lib.rs @@ -23,7 +23,7 @@ mod type_op; pub use type_op::{type_op_ascribe_user_type_with_span, type_op_prove_predicate_with_cause}; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; pub fn provide(p: &mut Providers) { dropck_outlives::provide(p); diff --git a/compiler/rustc_traits/src/normalize_erasing_regions.rs b/compiler/rustc_traits/src/normalize_erasing_regions.rs index 5da0f16c2bf..94c33efaeff 100644 --- a/compiler/rustc_traits/src/normalize_erasing_regions.rs +++ b/compiler/rustc_traits/src/normalize_erasing_regions.rs @@ -1,6 +1,6 @@ use rustc_infer::infer::TyCtxtInferExt; +use rustc_middle::query::Providers; use rustc_middle::traits::query::NoSolution; -use rustc_middle::ty::query::Providers; use rustc_middle::ty::{self, ParamEnvAnd, TyCtxt, TypeFoldable, TypeVisitableExt}; use rustc_trait_selection::traits::query::normalize::QueryNormalizeExt; use rustc_trait_selection::traits::{Normalized, ObligationCause}; diff --git a/compiler/rustc_traits/src/normalize_projection_ty.rs b/compiler/rustc_traits/src/normalize_projection_ty.rs index 36d80a06ee7..b552ba41acd 100644 --- a/compiler/rustc_traits/src/normalize_projection_ty.rs +++ b/compiler/rustc_traits/src/normalize_projection_ty.rs @@ -1,6 +1,6 @@ use rustc_infer::infer::canonical::{Canonical, QueryResponse}; use rustc_infer::infer::TyCtxtInferExt; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{ParamEnvAnd, TyCtxt}; use rustc_trait_selection::infer::InferCtxtBuilderExt; use rustc_trait_selection::traits::query::{ diff --git a/compiler/rustc_traits/src/type_op.rs b/compiler/rustc_traits/src/type_op.rs index 19622112f2a..70dc7ccec63 100644 --- a/compiler/rustc_traits/src/type_op.rs +++ b/compiler/rustc_traits/src/type_op.rs @@ -2,7 +2,7 @@ use rustc_hir as hir; use rustc_infer::infer::canonical::{Canonical, QueryResponse}; use rustc_infer::infer::{DefiningAnchor, TyCtxtInferExt}; use rustc_infer::traits::ObligationCauseCode; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, FnSig, Lift, PolyFnSig, Ty, TyCtxt, TypeFoldable}; use rustc_middle::ty::{ParamEnvAnd, Predicate}; use rustc_middle::ty::{UserSelfTy, UserSubsts, UserType}; diff --git a/compiler/rustc_ty_utils/src/abi.rs b/compiler/rustc_ty_utils/src/abi.rs index 271284b2d81..442d041a8a7 100644 --- a/compiler/rustc_ty_utils/src/abi.rs +++ b/compiler/rustc_ty_utils/src/abi.rs @@ -1,5 +1,6 @@ use rustc_hir as hir; use rustc_hir::lang_items::LangItem; +use rustc_middle::query::Providers; use rustc_middle::ty::layout::{ fn_can_unwind, FnAbiError, HasParamEnv, HasTyCtxt, LayoutCx, LayoutOf, TyAndLayout, }; @@ -14,8 +15,8 @@ use rustc_target::spec::abi::Abi as SpecAbi; use std::iter; -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { fn_abi_of_fn_ptr, fn_abi_of_instance, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { fn_abi_of_fn_ptr, fn_abi_of_instance, ..*providers }; } // NOTE(eddyb) this is private to avoid using it from outside of diff --git a/compiler/rustc_ty_utils/src/assoc.rs b/compiler/rustc_ty_utils/src/assoc.rs index 9029ba2a51a..ed574f22e61 100644 --- a/compiler/rustc_ty_utils/src/assoc.rs +++ b/compiler/rustc_ty_utils/src/assoc.rs @@ -4,11 +4,12 @@ use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, DefIdMap, LocalDefId}; use rustc_hir::definitions::DefPathData; use rustc_hir::intravisit::{self, Visitor}; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, ImplTraitInTraitData, InternalSubsts, TyCtxt}; use rustc_span::symbol::kw; -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { +pub fn provide(providers: &mut Providers) { + *providers = Providers { associated_item, associated_item_def_ids, associated_items, diff --git a/compiler/rustc_ty_utils/src/common_traits.rs b/compiler/rustc_ty_utils/src/common_traits.rs index 3b1abdcb24f..51b908881eb 100644 --- a/compiler/rustc_ty_utils/src/common_traits.rs +++ b/compiler/rustc_ty_utils/src/common_traits.rs @@ -2,6 +2,7 @@ use rustc_hir::lang_items::LangItem; use rustc_infer::infer::TyCtxtInferExt; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_trait_selection::traits; @@ -32,12 +33,6 @@ fn is_item_raw<'tcx>( traits::type_known_to_meet_bound_modulo_regions(&infcx, param_env, ty, trait_def_id) } -pub(crate) fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { - is_copy_raw, - is_sized_raw, - is_freeze_raw, - is_unpin_raw, - ..*providers - }; +pub(crate) fn provide(providers: &mut Providers) { + *providers = Providers { is_copy_raw, is_sized_raw, is_freeze_raw, is_unpin_raw, ..*providers }; } diff --git a/compiler/rustc_ty_utils/src/consts.rs b/compiler/rustc_ty_utils/src/consts.rs index 3dd1d056be2..1219bb40098 100644 --- a/compiler/rustc_ty_utils/src/consts.rs +++ b/compiler/rustc_ty_utils/src/consts.rs @@ -2,6 +2,7 @@ use rustc_errors::ErrorGuaranteed; use rustc_hir::def::DefKind; use rustc_hir::def_id::LocalDefId; use rustc_middle::mir::interpret::{LitToConstError, LitToConstInput}; +use rustc_middle::query::Providers; use rustc_middle::thir::visit; use rustc_middle::thir::visit::Visitor; use rustc_middle::ty::abstract_const::CastKind; @@ -115,9 +116,7 @@ fn recurse_build<'tcx>( let sp = node.span; match tcx.at(sp).lit_to_const(LitToConstInput { lit: &lit.node, ty: node.ty, neg }) { Ok(c) => c, - Err(LitToConstError::Reported(guar)) => { - tcx.const_error_with_guaranteed(node.ty, guar) - } + Err(LitToConstError::Reported(guar)) => tcx.const_error(node.ty, guar), Err(LitToConstError::TypeError) => { bug!("encountered type error in lit_to_const") } @@ -423,6 +422,6 @@ pub fn thir_abstract_const( Ok(Some(ty::EarlyBinder(recurse_build(tcx, body, body_id, root_span)?))) } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { destructure_const, thir_abstract_const, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { destructure_const, thir_abstract_const, ..*providers }; } diff --git a/compiler/rustc_ty_utils/src/implied_bounds.rs b/compiler/rustc_ty_utils/src/implied_bounds.rs index 5ca5d14337c..081be065864 100644 --- a/compiler/rustc_ty_utils/src/implied_bounds.rs +++ b/compiler/rustc_ty_utils/src/implied_bounds.rs @@ -1,8 +1,9 @@ use rustc_hir::{def::DefKind, def_id::DefId}; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { assumed_wf_types, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { assumed_wf_types, ..*providers }; } fn assumed_wf_types(tcx: TyCtxt<'_>, def_id: DefId) -> &ty::List<Ty<'_>> { diff --git a/compiler/rustc_ty_utils/src/instance.rs b/compiler/rustc_ty_utils/src/instance.rs index eb3c21163ab..36a20c78fcc 100644 --- a/compiler/rustc_ty_utils/src/instance.rs +++ b/compiler/rustc_ty_utils/src/instance.rs @@ -1,6 +1,7 @@ use rustc_errors::ErrorGuaranteed; use rustc_hir::def_id::DefId; use rustc_infer::infer::TyCtxtInferExt; +use rustc_middle::query::Providers; use rustc_middle::traits::CodegenObligationError; use rustc_middle::ty::subst::SubstsRef; use rustc_middle::ty::{self, Instance, TyCtxt, TypeVisitableExt}; @@ -319,6 +320,6 @@ fn resolve_associated_item<'tcx>( }) } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { resolve_instance, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { resolve_instance, ..*providers }; } diff --git a/compiler/rustc_ty_utils/src/layout.rs b/compiler/rustc_ty_utils/src/layout.rs index f7c75583f60..16cd8bc8e69 100644 --- a/compiler/rustc_ty_utils/src/layout.rs +++ b/compiler/rustc_ty_utils/src/layout.rs @@ -3,6 +3,7 @@ use rustc_hir as hir; use rustc_index::bit_set::BitSet; use rustc_index::{IndexSlice, IndexVec}; use rustc_middle::mir::{GeneratorLayout, GeneratorSavedLocal}; +use rustc_middle::query::Providers; use rustc_middle::ty::layout::{ IntegerExt, LayoutCx, LayoutError, LayoutOf, TyAndLayout, MAX_SIMD_LANES, }; @@ -22,8 +23,8 @@ use crate::errors::{ }; use crate::layout_sanity_check::sanity_check_layout; -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { layout_of, ..*providers }; +pub fn provide(providers: &mut Providers) { + *providers = Providers { layout_of, ..*providers }; } #[instrument(skip(tcx, query), level = "debug")] diff --git a/compiler/rustc_ty_utils/src/lib.rs b/compiler/rustc_ty_utils/src/lib.rs index 8306c5ae493..55b8857ed39 100644 --- a/compiler/rustc_ty_utils/src/lib.rs +++ b/compiler/rustc_ty_utils/src/lib.rs @@ -21,7 +21,7 @@ extern crate tracing; use rustc_errors::{DiagnosticMessage, SubdiagnosticMessage}; use rustc_fluent_macro::fluent_messages; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; mod abi; mod assoc; diff --git a/compiler/rustc_ty_utils/src/needs_drop.rs b/compiler/rustc_ty_utils/src/needs_drop.rs index a04f85afb9e..1f9701b9322 100644 --- a/compiler/rustc_ty_utils/src/needs_drop.rs +++ b/compiler/rustc_ty_utils/src/needs_drop.rs @@ -2,6 +2,7 @@ use rustc_data_structures::fx::FxHashSet; use rustc_hir::def_id::DefId; +use rustc_middle::query::Providers; use rustc_middle::ty::subst::SubstsRef; use rustc_middle::ty::util::{needs_drop_components, AlwaysRequiresDrop}; use rustc_middle::ty::{self, EarlyBinder, Ty, TyCtxt}; @@ -323,8 +324,8 @@ fn adt_significant_drop_tys( .map(|components| tcx.mk_type_list(&components)) } -pub(crate) fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { +pub(crate) fn provide(providers: &mut Providers) { + *providers = Providers { needs_drop_raw, has_significant_drop_raw, adt_drop_tys, diff --git a/compiler/rustc_ty_utils/src/opaque_types.rs b/compiler/rustc_ty_utils/src/opaque_types.rs index 25ebb333bf7..4e91dd380e8 100644 --- a/compiler/rustc_ty_utils/src/opaque_types.rs +++ b/compiler/rustc_ty_utils/src/opaque_types.rs @@ -1,6 +1,7 @@ use rustc_data_structures::fx::FxHashSet; use rustc_errors::ErrorGuaranteed; use rustc_hir::{def::DefKind, def_id::LocalDefId}; +use rustc_middle::query::Providers; use rustc_middle::ty::util::{CheckRegions, NotUniqueParam}; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_middle::ty::{TypeSuperVisitable, TypeVisitable, TypeVisitor}; @@ -192,6 +193,6 @@ fn opaque_types_defined_by<'tcx>(tcx: TyCtxt<'tcx>, item: LocalDefId) -> &'tcx [ } } -pub(super) fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { opaque_types_defined_by, ..*providers }; +pub(super) fn provide(providers: &mut Providers) { + *providers = Providers { opaque_types_defined_by, ..*providers }; } diff --git a/compiler/rustc_ty_utils/src/representability.rs b/compiler/rustc_ty_utils/src/representability.rs index 26d6deab883..0b5e27c2c74 100644 --- a/compiler/rustc_ty_utils/src/representability.rs +++ b/compiler/rustc_ty_utils/src/representability.rs @@ -2,7 +2,7 @@ use rustc_hir::def::DefKind; use rustc_index::bit_set::BitSet; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Representability, Ty, TyCtxt}; use rustc_span::def_id::LocalDefId; diff --git a/compiler/rustc_ty_utils/src/structural_match.rs b/compiler/rustc_ty_utils/src/structural_match.rs index 9cb0fc10594..215acbe2c8f 100644 --- a/compiler/rustc_ty_utils/src/structural_match.rs +++ b/compiler/rustc_ty_utils/src/structural_match.rs @@ -1,5 +1,5 @@ use rustc_hir::lang_items::LangItem; -use rustc_middle::ty::query::Providers; +use rustc_middle::query::Providers; use rustc_middle::ty::{self, Ty, TyCtxt}; use rustc_infer::infer::TyCtxtInferExt; diff --git a/compiler/rustc_ty_utils/src/ty.rs b/compiler/rustc_ty_utils/src/ty.rs index 78efcce572d..65dc3c39c6a 100644 --- a/compiler/rustc_ty_utils/src/ty.rs +++ b/compiler/rustc_ty_utils/src/ty.rs @@ -2,6 +2,7 @@ use rustc_data_structures::fx::{FxHashSet, FxIndexSet}; use rustc_hir as hir; use rustc_hir::def::DefKind; use rustc_index::bit_set::BitSet; +use rustc_middle::query::Providers; use rustc_middle::ty::{ self, Binder, EarlyBinder, ImplTraitInTraitData, Predicate, PredicateKind, ToPredicate, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitor, @@ -566,8 +567,8 @@ fn unsizing_params_for_adt<'tcx>(tcx: TyCtxt<'tcx>, def_id: DefId) -> BitSet<u32 unsizing_params } -pub fn provide(providers: &mut ty::query::Providers) { - *providers = ty::query::Providers { +pub fn provide(providers: &mut Providers) { + *providers = Providers { asyncness, adt_sized_constraint, param_env, diff --git a/library/alloc/src/collections/btree/map.rs b/library/alloc/src/collections/btree/map.rs index 2daef82d6f1..1f8a1ecba6e 100644 --- a/library/alloc/src/collections/btree/map.rs +++ b/library/alloc/src/collections/btree/map.rs @@ -3021,7 +3021,7 @@ impl<'a, K, V, A> CursorMut<'a, K, V, A> { }) } - /// Returns a mutable reference to the of the element that the cursor is + /// Returns a mutable reference to the key of the element that the cursor is /// currently pointing to. /// /// This returns `None` if the cursor is currently pointing to the diff --git a/library/core/benches/fmt.rs b/library/core/benches/fmt.rs index ff726ff7559..d1cdb12e50f 100644 --- a/library/core/benches/fmt.rs +++ b/library/core/benches/fmt.rs @@ -1,13 +1,13 @@ use std::fmt::{self, Write as FmtWrite}; use std::io::{self, Write as IoWrite}; -use test::Bencher; +use test::{black_box, Bencher}; #[bench] fn write_vec_value(bh: &mut Bencher) { bh.iter(|| { let mut mem = Vec::new(); for _ in 0..1000 { - mem.write_all("abc".as_bytes()).unwrap(); + mem.write_all(black_box("abc").as_bytes()).unwrap(); } }); } @@ -18,7 +18,7 @@ fn write_vec_ref(bh: &mut Bencher) { let mut mem = Vec::new(); let wr = &mut mem as &mut dyn io::Write; for _ in 0..1000 { - wr.write_all("abc".as_bytes()).unwrap(); + wr.write_all(black_box("abc").as_bytes()).unwrap(); } }); } @@ -29,7 +29,7 @@ fn write_vec_macro1(bh: &mut Bencher) { let mut mem = Vec::new(); let wr = &mut mem as &mut dyn io::Write; for _ in 0..1000 { - write!(wr, "abc").unwrap(); + write!(wr, "{}", black_box("abc")).unwrap(); } }); } @@ -40,7 +40,7 @@ fn write_vec_macro2(bh: &mut Bencher) { let mut mem = Vec::new(); let wr = &mut mem as &mut dyn io::Write; for _ in 0..1000 { - write!(wr, "{}", "abc").unwrap(); + write!(wr, "{}", black_box("abc")).unwrap(); } }); } @@ -51,7 +51,7 @@ fn write_vec_macro_debug(bh: &mut Bencher) { let mut mem = Vec::new(); let wr = &mut mem as &mut dyn io::Write; for _ in 0..1000 { - write!(wr, "{:?}", "☃").unwrap(); + write!(wr, "{:?}", black_box("☃")).unwrap(); } }); } @@ -61,7 +61,7 @@ fn write_str_value(bh: &mut Bencher) { bh.iter(|| { let mut mem = String::new(); for _ in 0..1000 { - mem.write_str("abc").unwrap(); + mem.write_str(black_box("abc")).unwrap(); } }); } @@ -72,7 +72,7 @@ fn write_str_ref(bh: &mut Bencher) { let mut mem = String::new(); let wr = &mut mem as &mut dyn fmt::Write; for _ in 0..1000 { - wr.write_str("abc").unwrap(); + wr.write_str(black_box("abc")).unwrap(); } }); } @@ -82,7 +82,7 @@ fn write_str_macro1(bh: &mut Bencher) { bh.iter(|| { let mut mem = String::new(); for _ in 0..1000 { - write!(mem, "abc").unwrap(); + write!(mem, "{}", black_box("abc")).unwrap(); } }); } @@ -93,7 +93,7 @@ fn write_str_macro2(bh: &mut Bencher) { let mut mem = String::new(); let wr = &mut mem as &mut dyn fmt::Write; for _ in 0..1000 { - write!(wr, "{}", "abc").unwrap(); + write!(wr, "{}", black_box("abc")).unwrap(); } }); } @@ -104,7 +104,7 @@ fn write_str_macro_debug(bh: &mut Bencher) { let mut mem = String::new(); let wr = &mut mem as &mut dyn fmt::Write; for _ in 0..1000 { - write!(wr, "{:?}", "☃").unwrap(); + write!(wr, "{:?}", black_box("☃")).unwrap(); } }); } @@ -115,7 +115,7 @@ fn write_str_macro_debug_ascii(bh: &mut Bencher) { let mut mem = String::new(); let wr = &mut mem as &mut dyn fmt::Write; for _ in 0..1000 { - write!(wr, "{:?}", "Hello, World!").unwrap(); + write!(wr, "{:?}", black_box("Hello, World!")).unwrap(); } }); } diff --git a/library/core/benches/num/dec2flt/mod.rs b/library/core/benches/num/dec2flt/mod.rs index 305baa68729..fb4a786b27e 100644 --- a/library/core/benches/num/dec2flt/mod.rs +++ b/library/core/benches/num/dec2flt/mod.rs @@ -1,57 +1,57 @@ -use test::Bencher; +use test::{black_box, Bencher}; #[bench] fn bench_0(b: &mut Bencher) { - b.iter(|| "0.0".parse::<f64>()); + b.iter(|| black_box("0.0").parse::<f64>()); } #[bench] fn bench_42(b: &mut Bencher) { - b.iter(|| "42".parse::<f64>()); + b.iter(|| black_box("42").parse::<f64>()); } #[bench] fn bench_huge_int(b: &mut Bencher) { // 2^128 - 1 - b.iter(|| "170141183460469231731687303715884105727".parse::<f64>()); + b.iter(|| black_box("170141183460469231731687303715884105727").parse::<f64>()); } #[bench] fn bench_short_decimal(b: &mut Bencher) { - b.iter(|| "1234.5678".parse::<f64>()); + b.iter(|| black_box("1234.5678").parse::<f64>()); } #[bench] fn bench_pi_long(b: &mut Bencher) { - b.iter(|| "3.14159265358979323846264338327950288".parse::<f64>()); + b.iter(|| black_box("3.14159265358979323846264338327950288").parse::<f64>()); } #[bench] fn bench_pi_short(b: &mut Bencher) { - b.iter(|| "3.141592653589793".parse::<f64>()) + b.iter(|| black_box("3.141592653589793").parse::<f64>()) } #[bench] fn bench_1e150(b: &mut Bencher) { - b.iter(|| "1e150".parse::<f64>()); + b.iter(|| black_box("1e150").parse::<f64>()); } #[bench] fn bench_long_decimal_and_exp(b: &mut Bencher) { - b.iter(|| "727501488517303786137132964064381141071e-123".parse::<f64>()); + b.iter(|| black_box("727501488517303786137132964064381141071e-123").parse::<f64>()); } #[bench] fn bench_min_subnormal(b: &mut Bencher) { - b.iter(|| "5e-324".parse::<f64>()); + b.iter(|| black_box("5e-324").parse::<f64>()); } #[bench] fn bench_min_normal(b: &mut Bencher) { - b.iter(|| "2.2250738585072014e-308".parse::<f64>()); + b.iter(|| black_box("2.2250738585072014e-308").parse::<f64>()); } #[bench] fn bench_max(b: &mut Bencher) { - b.iter(|| "1.7976931348623157e308".parse::<f64>()); + b.iter(|| black_box("1.7976931348623157e308").parse::<f64>()); } diff --git a/library/core/benches/num/flt2dec/mod.rs b/library/core/benches/num/flt2dec/mod.rs index 32fd5e626bc..1a330ef5fe5 100644 --- a/library/core/benches/num/flt2dec/mod.rs +++ b/library/core/benches/num/flt2dec/mod.rs @@ -7,7 +7,7 @@ use core::num::flt2dec::MAX_SIG_DIGITS; use core::num::flt2dec::{decode, DecodableFloat, Decoded, FullDecoded}; use std::io::Write; use std::vec::Vec; -use test::Bencher; +use test::{black_box, Bencher}; pub fn decode_finite<T: DecodableFloat>(v: T) -> Decoded { match decode(v).1 { @@ -22,7 +22,7 @@ fn bench_small_shortest(b: &mut Bencher) { b.iter(|| { buf.clear(); - write!(&mut buf, "{}", 3.1415926f64).unwrap() + write!(black_box(&mut buf), "{}", black_box(3.1415926f64)).unwrap() }); } @@ -32,6 +32,6 @@ fn bench_big_shortest(b: &mut Bencher) { b.iter(|| { buf.clear(); - write!(&mut buf, "{}", f64::MAX).unwrap() + write!(black_box(&mut buf), "{}", black_box(f64::MAX)).unwrap() }); } diff --git a/library/core/benches/num/mod.rs b/library/core/benches/num/mod.rs index 2f9cad2725d..b97014d9bf9 100644 --- a/library/core/benches/num/mod.rs +++ b/library/core/benches/num/mod.rs @@ -3,7 +3,7 @@ mod flt2dec; mod int_log; use std::str::FromStr; -use test::Bencher; +use test::{black_box, Bencher}; const ASCII_NUMBERS: [&str; 19] = [ "0", @@ -36,7 +36,7 @@ macro_rules! from_str_bench { .iter() .cycle() .take(5_000) - .filter_map(|s| <$t>::from_str(s).ok()) + .filter_map(|s| <$t>::from_str(black_box(s)).ok()) .max() }) } @@ -52,7 +52,7 @@ macro_rules! from_str_radix_bench { .iter() .cycle() .take(5_000) - .filter_map(|s| <$t>::from_str_radix(s, $radix).ok()) + .filter_map(|s| <$t>::from_str_radix(black_box(s), $radix).ok()) .max() }) } diff --git a/library/core/src/any.rs b/library/core/src/any.rs index bb93ea509d8..d1c1ae6526b 100644 --- a/library/core/src/any.rs +++ b/library/core/src/any.rs @@ -866,7 +866,7 @@ where /// /// A data provider provides values by calling this type's provide methods. #[unstable(feature = "provide_any", issue = "96024")] -#[repr(transparent)] +#[cfg_attr(not(doc), repr(transparent))] // work around https://github.com/rust-lang/rust/issues/90435 pub struct Demand<'a>(dyn Erased<'a> + 'a); impl<'a> Demand<'a> { diff --git a/library/core/src/cell.rs b/library/core/src/cell.rs index a96dfafd9c4..2c3c14853a4 100644 --- a/library/core/src/cell.rs +++ b/library/core/src/cell.rs @@ -2100,6 +2100,8 @@ impl<T: ?Sized> UnsafeCell<T> { /// /// let m = MaybeUninit::<UnsafeCell<i32>>::uninit(); /// unsafe { UnsafeCell::raw_get(m.as_ptr()).write(5); } + /// // avoid below which references to uninitialized data + /// // unsafe { UnsafeCell::get(&*m.as_ptr()).write(5); } /// let uc = unsafe { m.assume_init() }; /// /// assert_eq!(uc.into_inner(), 5); diff --git a/library/core/src/ffi/mod.rs b/library/core/src/ffi/mod.rs index b85894259f1..b73abbbaca7 100644 --- a/library/core/src/ffi/mod.rs +++ b/library/core/src/ffi/mod.rs @@ -203,7 +203,7 @@ mod c_long_definition { // be UB. #[doc = include_str!("c_void.md")] #[cfg_attr(not(bootstrap), lang = "c_void")] -#[repr(u8)] +#[cfg_attr(not(doc), repr(u8))] // work around https://github.com/rust-lang/rust/issues/90435 #[stable(feature = "core_c_void", since = "1.30.0")] pub enum c_void { #[unstable( @@ -244,7 +244,7 @@ impl fmt::Debug for c_void { target_os = "uefi", windows, ))] -#[repr(transparent)] +#[cfg_attr(not(doc), repr(transparent))] // work around https://github.com/rust-lang/rust/issues/90435 #[unstable( feature = "c_variadic", reason = "the `c_variadic` feature has not been properly tested on \ @@ -296,7 +296,7 @@ impl<'f> fmt::Debug for VaListImpl<'f> { not(target_os = "uefi"), not(windows), ))] -#[repr(C)] +#[cfg_attr(not(doc), repr(C))] // work around https://github.com/rust-lang/rust/issues/66401 #[derive(Debug)] #[unstable( feature = "c_variadic", @@ -316,7 +316,7 @@ pub struct VaListImpl<'f> { /// PowerPC ABI implementation of a `va_list`. #[cfg(all(target_arch = "powerpc", not(target_os = "uefi"), not(windows)))] -#[repr(C)] +#[cfg_attr(not(doc), repr(C))] // work around https://github.com/rust-lang/rust/issues/66401 #[derive(Debug)] #[unstable( feature = "c_variadic", @@ -336,7 +336,7 @@ pub struct VaListImpl<'f> { /// s390x ABI implementation of a `va_list`. #[cfg(target_arch = "s390x")] -#[repr(C)] +#[cfg_attr(not(doc), repr(C))] // work around https://github.com/rust-lang/rust/issues/66401 #[derive(Debug)] #[unstable( feature = "c_variadic", @@ -355,7 +355,7 @@ pub struct VaListImpl<'f> { /// x86_64 ABI implementation of a `va_list`. #[cfg(all(target_arch = "x86_64", not(target_os = "uefi"), not(windows)))] -#[repr(C)] +#[cfg_attr(not(doc), repr(C))] // work around https://github.com/rust-lang/rust/issues/66401 #[derive(Debug)] #[unstable( feature = "c_variadic", @@ -373,7 +373,7 @@ pub struct VaListImpl<'f> { } /// A wrapper for a `va_list` -#[repr(transparent)] +#[cfg_attr(not(doc), repr(transparent))] // work around https://github.com/rust-lang/rust/issues/90435 #[derive(Debug)] #[unstable( feature = "c_variadic", diff --git a/library/core/src/intrinsics/mir.rs b/library/core/src/intrinsics/mir.rs index 19f8b944c1f..5944a0de1a4 100644 --- a/library/core/src/intrinsics/mir.rs +++ b/library/core/src/intrinsics/mir.rs @@ -228,7 +228,7 @@ //! //! - Operands implicitly convert to `Use` rvalues. //! - `&`, `&mut`, `addr_of!`, and `addr_of_mut!` all work to create their associated rvalue. -//! - [`Discriminant`] and [`Len`] have associated functions. +//! - [`Discriminant`], [`Len`], and [`CopyForDeref`] have associated functions. //! - Unary and binary operations use their normal Rust syntax - `a * b`, `!c`, etc. //! - The binary operation `Offset` can be created via [`Offset`]. //! - Checked binary operations are represented by wrapping the associated binop in [`Checked`]. @@ -279,6 +279,7 @@ define!("mir_storage_dead", fn StorageDead<T>(local: T)); define!("mir_deinit", fn Deinit<T>(place: T)); define!("mir_checked", fn Checked<T>(binop: T) -> (T, bool)); define!("mir_len", fn Len<T>(place: T) -> usize); +define!("mir_copy_for_deref", fn CopyForDeref<T>(place: T) -> T); define!("mir_retag", fn Retag<T>(place: T)); define!("mir_move", fn Move<T>(place: T) -> T); define!("mir_static", fn Static<T>(s: T) -> &'static T); diff --git a/library/core/src/lib.rs b/library/core/src/lib.rs index 26c51e84035..0af04fac909 100644 --- a/library/core/src/lib.rs +++ b/library/core/src/lib.rs @@ -133,6 +133,7 @@ #![feature(const_maybe_uninit_assume_init)] #![feature(const_maybe_uninit_uninit_array)] #![feature(const_nonnull_new)] +#![feature(const_num_midpoint)] #![feature(const_option)] #![feature(const_option_ext)] #![feature(const_pin)] diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs index 01606086fca..47a3e78b4d5 100644 --- a/library/core/src/marker.rs +++ b/library/core/src/marker.rs @@ -695,7 +695,7 @@ impl<T: ?Sized> !Sync for *mut T {} /// } /// ``` /// -/// This also in turn requires the annotation `T: 'a`, indicating +/// This also in turn infers the lifetime bound `T: 'a`, indicating /// that any references in `T` are valid over the lifetime `'a`. /// /// When initializing a `Slice` you simply provide the value diff --git a/library/core/src/num/f32.rs b/library/core/src/num/f32.rs index 1c6819b547d..4a035ad61e1 100644 --- a/library/core/src/num/f32.rs +++ b/library/core/src/num/f32.rs @@ -940,6 +940,42 @@ impl f32 { } } + /// Calculates the middle point of `self` and `rhs`. + /// + /// This returns NaN when *either* argument is NaN or if a combination of + /// +inf and -inf is provided as arguments. + /// + /// # Examples + /// + /// ``` + /// #![feature(num_midpoint)] + /// assert_eq!(1f32.midpoint(4.0), 2.5); + /// assert_eq!((-5.5f32).midpoint(8.0), 1.25); + /// ``` + #[unstable(feature = "num_midpoint", issue = "110840")] + pub fn midpoint(self, other: f32) -> f32 { + const LO: f32 = f32::MIN_POSITIVE * 2.; + const HI: f32 = f32::MAX / 2.; + + let (a, b) = (self, other); + let abs_a = a.abs_private(); + let abs_b = b.abs_private(); + + if abs_a <= HI && abs_b <= HI { + // Overflow is impossible + (a + b) / 2. + } else if abs_a < LO { + // Not safe to halve a + a + (b / 2.) + } else if abs_b < LO { + // Not safe to halve b + (a / 2.) + b + } else { + // Not safe to halve a and b + (a / 2.) + (b / 2.) + } + } + /// Rounds toward zero and converts to any primitive integer type, /// assuming that the value is finite and fits in that type. /// diff --git a/library/core/src/num/f64.rs b/library/core/src/num/f64.rs index 1e7387217cb..3aafc435f1e 100644 --- a/library/core/src/num/f64.rs +++ b/library/core/src/num/f64.rs @@ -951,6 +951,42 @@ impl f64 { } } + /// Calculates the middle point of `self` and `rhs`. + /// + /// This returns NaN when *either* argument is NaN or if a combination of + /// +inf and -inf is provided as arguments. + /// + /// # Examples + /// + /// ``` + /// #![feature(num_midpoint)] + /// assert_eq!(1f64.midpoint(4.0), 2.5); + /// assert_eq!((-5.5f64).midpoint(8.0), 1.25); + /// ``` + #[unstable(feature = "num_midpoint", issue = "110840")] + pub fn midpoint(self, other: f64) -> f64 { + const LO: f64 = f64::MIN_POSITIVE * 2.; + const HI: f64 = f64::MAX / 2.; + + let (a, b) = (self, other); + let abs_a = a.abs_private(); + let abs_b = b.abs_private(); + + if abs_a <= HI && abs_b <= HI { + // Overflow is impossible + (a + b) / 2. + } else if abs_a < LO { + // Not safe to halve a + a + (b / 2.) + } else if abs_b < LO { + // Not safe to halve b + (a / 2.) + b + } else { + // Not safe to halve a and b + (a / 2.) + (b / 2.) + } + } + /// Rounds toward zero and converts to any primitive integer type, /// assuming that the value is finite and fits in that type. /// diff --git a/library/core/src/num/int_macros.rs b/library/core/src/num/int_macros.rs index 17715c9291f..1199d09b563 100644 --- a/library/core/src/num/int_macros.rs +++ b/library/core/src/num/int_macros.rs @@ -2332,6 +2332,44 @@ macro_rules! int_impl { } } + /// Calculates the middle point of `self` and `rhs`. + /// + /// `midpoint(a, b)` is `(a + b) >> 1` as if it were performed in a + /// sufficiently-large signed integral type. This implies that the result is + /// always rounded towards negative infinity and that no overflow will ever occur. + /// + /// # Examples + /// + /// ``` + /// #![feature(num_midpoint)] + #[doc = concat!("assert_eq!(0", stringify!($SelfT), ".midpoint(4), 2);")] + #[doc = concat!("assert_eq!(0", stringify!($SelfT), ".midpoint(-1), -1);")] + #[doc = concat!("assert_eq!((-1", stringify!($SelfT), ").midpoint(0), -1);")] + /// ``` + #[unstable(feature = "num_midpoint", issue = "110840")] + #[rustc_const_unstable(feature = "const_num_midpoint", issue = "110840")] + #[rustc_allow_const_fn_unstable(const_num_midpoint)] + #[must_use = "this returns the result of the operation, \ + without modifying the original"] + #[inline] + pub const fn midpoint(self, rhs: Self) -> Self { + const U: $UnsignedT = <$SelfT>::MIN.unsigned_abs(); + + // Map an $SelfT to an $UnsignedT + // ex: i8 [-128; 127] to [0; 255] + const fn map(a: $SelfT) -> $UnsignedT { + (a as $UnsignedT) ^ U + } + + // Map an $UnsignedT to an $SelfT + // ex: u8 [0; 255] to [-128; 127] + const fn demap(a: $UnsignedT) -> $SelfT { + (a ^ U) as $SelfT + } + + demap(<$UnsignedT>::midpoint(map(self), map(rhs))) + } + /// Returns the logarithm of the number with respect to an arbitrary base, /// rounded down. /// diff --git a/library/core/src/num/mod.rs b/library/core/src/num/mod.rs index 08444421dca..c9baa09f407 100644 --- a/library/core/src/num/mod.rs +++ b/library/core/src/num/mod.rs @@ -95,6 +95,57 @@ depending on the target pointer size. }; } +macro_rules! midpoint_impl { + ($SelfT:ty, unsigned) => { + /// Calculates the middle point of `self` and `rhs`. + /// + /// `midpoint(a, b)` is `(a + b) >> 1` as if it were performed in a + /// sufficiently-large signed integral type. This implies that the result is + /// always rounded towards negative infinity and that no overflow will ever occur. + /// + /// # Examples + /// + /// ``` + /// #![feature(num_midpoint)] + #[doc = concat!("assert_eq!(0", stringify!($SelfT), ".midpoint(4), 2);")] + #[doc = concat!("assert_eq!(1", stringify!($SelfT), ".midpoint(4), 2);")] + /// ``` + #[unstable(feature = "num_midpoint", issue = "110840")] + #[rustc_const_unstable(feature = "const_num_midpoint", issue = "110840")] + #[must_use = "this returns the result of the operation, \ + without modifying the original"] + #[inline] + pub const fn midpoint(self, rhs: $SelfT) -> $SelfT { + // Use the well known branchless algorthim from Hacker's Delight to compute + // `(a + b) / 2` without overflowing: `((a ^ b) >> 1) + (a & b)`. + ((self ^ rhs) >> 1) + (self & rhs) + } + }; + ($SelfT:ty, $WideT:ty, unsigned) => { + /// Calculates the middle point of `self` and `rhs`. + /// + /// `midpoint(a, b)` is `(a + b) >> 1` as if it were performed in a + /// sufficiently-large signed integral type. This implies that the result is + /// always rounded towards negative infinity and that no overflow will ever occur. + /// + /// # Examples + /// + /// ``` + /// #![feature(num_midpoint)] + #[doc = concat!("assert_eq!(0", stringify!($SelfT), ".midpoint(4), 2);")] + #[doc = concat!("assert_eq!(1", stringify!($SelfT), ".midpoint(4), 2);")] + /// ``` + #[unstable(feature = "num_midpoint", issue = "110840")] + #[rustc_const_unstable(feature = "const_num_midpoint", issue = "110840")] + #[must_use = "this returns the result of the operation, \ + without modifying the original"] + #[inline] + pub const fn midpoint(self, rhs: $SelfT) -> $SelfT { + ((self as $WideT + rhs as $WideT) / 2) as $SelfT + } + }; +} + macro_rules! widening_impl { ($SelfT:ty, $WideT:ty, $BITS:literal, unsigned) => { /// Calculates the complete product `self * rhs` without the possibility to overflow. @@ -455,6 +506,7 @@ impl u8 { bound_condition = "", } widening_impl! { u8, u16, 8, unsigned } + midpoint_impl! { u8, u16, unsigned } /// Checks if the value is within the ASCII range. /// @@ -1066,6 +1118,7 @@ impl u16 { bound_condition = "", } widening_impl! { u16, u32, 16, unsigned } + midpoint_impl! { u16, u32, unsigned } /// Checks if the value is a Unicode surrogate code point, which are disallowed values for [`char`]. /// @@ -1114,6 +1167,7 @@ impl u32 { bound_condition = "", } widening_impl! { u32, u64, 32, unsigned } + midpoint_impl! { u32, u64, unsigned } } impl u64 { @@ -1137,6 +1191,7 @@ impl u64 { bound_condition = "", } widening_impl! { u64, u128, 64, unsigned } + midpoint_impl! { u64, u128, unsigned } } impl u128 { @@ -1161,6 +1216,7 @@ impl u128 { from_xe_bytes_doc = "", bound_condition = "", } + midpoint_impl! { u128, unsigned } } #[cfg(target_pointer_width = "16")] @@ -1185,6 +1241,7 @@ impl usize { bound_condition = " on 16-bit targets", } widening_impl! { usize, u32, 16, unsigned } + midpoint_impl! { usize, u32, unsigned } } #[cfg(target_pointer_width = "32")] @@ -1209,6 +1266,7 @@ impl usize { bound_condition = " on 32-bit targets", } widening_impl! { usize, u64, 32, unsigned } + midpoint_impl! { usize, u64, unsigned } } #[cfg(target_pointer_width = "64")] @@ -1233,6 +1291,7 @@ impl usize { bound_condition = " on 64-bit targets", } widening_impl! { usize, u128, 64, unsigned } + midpoint_impl! { usize, u128, unsigned } } impl usize { diff --git a/library/core/src/num/nonzero.rs b/library/core/src/num/nonzero.rs index 74a325b89d4..38a1c42d9e8 100644 --- a/library/core/src/num/nonzero.rs +++ b/library/core/src/num/nonzero.rs @@ -493,6 +493,43 @@ macro_rules! nonzero_unsigned_operations { pub const fn ilog10(self) -> u32 { super::int_log10::$Int(self.0) } + + /// Calculates the middle point of `self` and `rhs`. + /// + /// `midpoint(a, b)` is `(a + b) >> 1` as if it were performed in a + /// sufficiently-large signed integral type. This implies that the result is + /// always rounded towards negative infinity and that no overflow will ever occur. + /// + /// # Examples + /// + /// ``` + /// #![feature(num_midpoint)] + #[doc = concat!("# use std::num::", stringify!($Ty), ";")] + /// + /// # fn main() { test().unwrap(); } + /// # fn test() -> Option<()> { + #[doc = concat!("let one = ", stringify!($Ty), "::new(1)?;")] + #[doc = concat!("let two = ", stringify!($Ty), "::new(2)?;")] + #[doc = concat!("let four = ", stringify!($Ty), "::new(4)?;")] + /// + /// assert_eq!(one.midpoint(four), two); + /// assert_eq!(four.midpoint(one), two); + /// # Some(()) + /// # } + /// ``` + #[unstable(feature = "num_midpoint", issue = "110840")] + #[rustc_const_unstable(feature = "const_num_midpoint", issue = "110840")] + #[rustc_allow_const_fn_unstable(const_num_midpoint)] + #[must_use = "this returns the result of the operation, \ + without modifying the original"] + #[inline] + pub const fn midpoint(self, rhs: Self) -> Self { + // SAFETY: The only way to get `0` with midpoint is to have two opposite or + // near opposite numbers: (-5, 5), (0, 1), (0, 0) which is impossible because + // of the unsignedness of this number and also because $Ty is guaranteed to + // never being 0. + unsafe { $Ty::new_unchecked(self.get().midpoint(rhs.get())) } + } } )+ } @@ -719,8 +756,6 @@ macro_rules! nonzero_signed_operations { /// # Example /// /// ``` - /// #![feature(nonzero_negation_ops)] - /// #[doc = concat!("# use std::num::", stringify!($Ty), ";")] /// # fn main() { test().unwrap(); } /// # fn test() -> Option<()> { @@ -734,7 +769,8 @@ macro_rules! nonzero_signed_operations { /// ``` #[must_use] #[inline] - #[unstable(feature = "nonzero_negation_ops", issue = "102443")] + #[stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] pub const fn is_positive(self) -> bool { self.get().is_positive() } @@ -745,8 +781,6 @@ macro_rules! nonzero_signed_operations { /// # Example /// /// ``` - /// #![feature(nonzero_negation_ops)] - /// #[doc = concat!("# use std::num::", stringify!($Ty), ";")] /// # fn main() { test().unwrap(); } /// # fn test() -> Option<()> { @@ -760,7 +794,8 @@ macro_rules! nonzero_signed_operations { /// ``` #[must_use] #[inline] - #[unstable(feature = "nonzero_negation_ops", issue = "102443")] + #[stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] pub const fn is_negative(self) -> bool { self.get().is_negative() } @@ -770,8 +805,6 @@ macro_rules! nonzero_signed_operations { /// # Example /// /// ``` - /// #![feature(nonzero_negation_ops)] - /// #[doc = concat!("# use std::num::", stringify!($Ty), ";")] /// # fn main() { test().unwrap(); } /// # fn test() -> Option<()> { @@ -786,7 +819,8 @@ macro_rules! nonzero_signed_operations { /// # } /// ``` #[inline] - #[unstable(feature = "nonzero_negation_ops", issue = "102443")] + #[stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] pub const fn checked_neg(self) -> Option<$Ty> { if let Some(result) = self.get().checked_neg() { // SAFETY: negation of nonzero cannot yield zero values. @@ -803,8 +837,6 @@ macro_rules! nonzero_signed_operations { /// # Example /// /// ``` - /// #![feature(nonzero_negation_ops)] - /// #[doc = concat!("# use std::num::", stringify!($Ty), ";")] /// # fn main() { test().unwrap(); } /// # fn test() -> Option<()> { @@ -819,7 +851,8 @@ macro_rules! nonzero_signed_operations { /// # } /// ``` #[inline] - #[unstable(feature = "nonzero_negation_ops", issue = "102443")] + #[stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] pub const fn overflowing_neg(self) -> ($Ty, bool) { let (result, overflow) = self.get().overflowing_neg(); // SAFETY: negation of nonzero cannot yield zero values. @@ -832,8 +865,6 @@ macro_rules! nonzero_signed_operations { /// # Example /// /// ``` - /// #![feature(nonzero_negation_ops)] - /// #[doc = concat!("# use std::num::", stringify!($Ty), ";")] /// # fn main() { test().unwrap(); } /// # fn test() -> Option<()> { @@ -853,7 +884,8 @@ macro_rules! nonzero_signed_operations { /// # } /// ``` #[inline] - #[unstable(feature = "nonzero_negation_ops", issue = "102443")] + #[stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] pub const fn saturating_neg(self) -> $Ty { if let Some(result) = self.checked_neg() { return result; @@ -870,8 +902,6 @@ macro_rules! nonzero_signed_operations { /// # Example /// /// ``` - /// #![feature(nonzero_negation_ops)] - /// #[doc = concat!("# use std::num::", stringify!($Ty), ";")] /// # fn main() { test().unwrap(); } /// # fn test() -> Option<()> { @@ -886,7 +916,8 @@ macro_rules! nonzero_signed_operations { /// # } /// ``` #[inline] - #[unstable(feature = "nonzero_negation_ops", issue = "102443")] + #[stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] + #[rustc_const_stable(feature = "nonzero_negation_ops", since = "CURRENT_RUSTC_VERSION")] pub const fn wrapping_neg(self) -> $Ty { let result = self.get().wrapping_neg(); // SAFETY: negation of nonzero cannot yield zero values. diff --git a/library/core/src/panic/panic_info.rs b/library/core/src/panic/panic_info.rs index 06fbe083ca1..5576adde84b 100644 --- a/library/core/src/panic/panic_info.rs +++ b/library/core/src/panic/panic_info.rs @@ -134,7 +134,7 @@ impl<'a> PanicInfo<'a> { /// whose ABI does not support unwinding. /// /// It is safe for a panic handler to unwind even when this function returns - /// true, however this will simply cause the panic handler to be called + /// false, however this will simply cause the panic handler to be called /// again. #[must_use] #[unstable(feature = "panic_can_unwind", issue = "92988")] diff --git a/library/core/src/slice/mod.rs b/library/core/src/slice/mod.rs index c2e9ba273a5..6fd2b87d0e3 100644 --- a/library/core/src/slice/mod.rs +++ b/library/core/src/slice/mod.rs @@ -1595,7 +1595,8 @@ impl<T> [T] { /// } /// ``` #[stable(feature = "rust1", since = "1.0.0")] - #[rustc_const_unstable(feature = "const_slice_split_at_not_mut", issue = "101158")] + #[rustc_const_stable(feature = "const_slice_split_at_not_mut", since = "CURRENT_RUSTC_VERSION")] + #[rustc_allow_const_fn_unstable(slice_split_at_unchecked)] #[inline] #[track_caller] #[must_use] diff --git a/library/core/src/str/pattern.rs b/library/core/src/str/pattern.rs index e3a464a1c51..91ee2903aab 100644 --- a/library/core/src/str/pattern.rs +++ b/library/core/src/str/pattern.rs @@ -791,8 +791,8 @@ pub struct CharArrayRefSearcher<'a, 'b, const N: usize>( /// # Examples /// /// ``` -/// assert_eq!("Hello world".find(['l', 'l']), Some(2)); -/// assert_eq!("Hello world".find(['l', 'l']), Some(2)); +/// assert_eq!("Hello world".find(['o', 'l']), Some(2)); +/// assert_eq!("Hello world".find(['h', 'w']), Some(6)); /// ``` impl<'a, const N: usize> Pattern<'a> for [char; N] { pattern_methods!(CharArraySearcher<'a, N>, MultiCharEqPattern, CharArraySearcher); @@ -811,8 +811,8 @@ unsafe impl<'a, const N: usize> ReverseSearcher<'a> for CharArraySearcher<'a, N> /// # Examples /// /// ``` -/// assert_eq!("Hello world".find(&['l', 'l']), Some(2)); -/// assert_eq!("Hello world".find(&['l', 'l']), Some(2)); +/// assert_eq!("Hello world".find(&['o', 'l']), Some(2)); +/// assert_eq!("Hello world".find(&['h', 'w']), Some(6)); /// ``` impl<'a, 'b, const N: usize> Pattern<'a> for &'b [char; N] { pattern_methods!(CharArrayRefSearcher<'a, 'b, N>, MultiCharEqPattern, CharArrayRefSearcher); diff --git a/library/core/src/task/wake.rs b/library/core/src/task/wake.rs index 808825326ae..7043ab5ff2b 100644 --- a/library/core/src/task/wake.rs +++ b/library/core/src/task/wake.rs @@ -232,7 +232,7 @@ impl fmt::Debug for Context<'_> { /// /// [`Future::poll()`]: core::future::Future::poll /// [`Poll::Pending`]: core::task::Poll::Pending -#[repr(transparent)] +#[cfg_attr(not(doc), repr(transparent))] // work around https://github.com/rust-lang/rust/issues/66401 #[stable(feature = "futures_api", since = "1.36.0")] pub struct Waker { waker: RawWaker, diff --git a/library/core/tests/lib.rs b/library/core/tests/lib.rs index 3c49d1705e5..3933e328951 100644 --- a/library/core/tests/lib.rs +++ b/library/core/tests/lib.rs @@ -53,6 +53,7 @@ #![feature(maybe_uninit_uninit_array_transpose)] #![feature(min_specialization)] #![feature(numfmt)] +#![feature(num_midpoint)] #![feature(step_trait)] #![feature(str_internals)] #![feature(std_internals)] diff --git a/library/core/tests/num/int_macros.rs b/library/core/tests/num/int_macros.rs index 18c55e43aac..439bbe66997 100644 --- a/library/core/tests/num/int_macros.rs +++ b/library/core/tests/num/int_macros.rs @@ -364,6 +364,32 @@ macro_rules! int_module { assert_eq!((0 as $T).borrowing_sub($T::MIN, false), ($T::MIN, true)); assert_eq!((0 as $T).borrowing_sub($T::MIN, true), ($T::MAX, false)); } + + #[test] + fn test_midpoint() { + assert_eq!(<$T>::midpoint(1, 3), 2); + assert_eq!(<$T>::midpoint(3, 1), 2); + + assert_eq!(<$T>::midpoint(0, 0), 0); + assert_eq!(<$T>::midpoint(0, 2), 1); + assert_eq!(<$T>::midpoint(2, 0), 1); + assert_eq!(<$T>::midpoint(2, 2), 2); + + assert_eq!(<$T>::midpoint(1, 4), 2); + assert_eq!(<$T>::midpoint(4, 1), 2); + assert_eq!(<$T>::midpoint(3, 4), 3); + assert_eq!(<$T>::midpoint(4, 3), 3); + + assert_eq!(<$T>::midpoint(<$T>::MIN, <$T>::MAX), -1); + assert_eq!(<$T>::midpoint(<$T>::MAX, <$T>::MIN), -1); + assert_eq!(<$T>::midpoint(<$T>::MIN, <$T>::MIN), <$T>::MIN); + assert_eq!(<$T>::midpoint(<$T>::MAX, <$T>::MAX), <$T>::MAX); + + assert_eq!(<$T>::midpoint(<$T>::MIN, 6), <$T>::MIN / 2 + 3); + assert_eq!(<$T>::midpoint(6, <$T>::MIN), <$T>::MIN / 2 + 3); + assert_eq!(<$T>::midpoint(<$T>::MAX, 6), <$T>::MAX / 2 + 3); + assert_eq!(<$T>::midpoint(6, <$T>::MAX), <$T>::MAX / 2 + 3); + } } }; } diff --git a/library/core/tests/num/mod.rs b/library/core/tests/num/mod.rs index 3e1f848ccfe..3f3659ba837 100644 --- a/library/core/tests/num/mod.rs +++ b/library/core/tests/num/mod.rs @@ -724,7 +724,7 @@ assume_usize_width! { } macro_rules! test_float { - ($modname: ident, $fty: ty, $inf: expr, $neginf: expr, $nan: expr) => { + ($modname: ident, $fty: ty, $inf: expr, $neginf: expr, $nan: expr, $min: expr, $max: expr, $min_pos: expr) => { mod $modname { #[test] fn min() { @@ -845,6 +845,38 @@ macro_rules! test_float { assert!(($nan as $fty).maximum($nan).is_nan()); } #[test] + fn midpoint() { + assert_eq!((0.5 as $fty).midpoint(0.5), 0.5); + assert_eq!((0.5 as $fty).midpoint(2.5), 1.5); + assert_eq!((3.0 as $fty).midpoint(4.0), 3.5); + assert_eq!((-3.0 as $fty).midpoint(4.0), 0.5); + assert_eq!((3.0 as $fty).midpoint(-4.0), -0.5); + assert_eq!((-3.0 as $fty).midpoint(-4.0), -3.5); + assert_eq!((0.0 as $fty).midpoint(0.0), 0.0); + assert_eq!((-0.0 as $fty).midpoint(-0.0), -0.0); + assert_eq!((-5.0 as $fty).midpoint(5.0), 0.0); + assert_eq!(($max as $fty).midpoint($min), 0.0); + assert_eq!(($min as $fty).midpoint($max), -0.0); + assert_eq!(($max as $fty).midpoint($min_pos), $max / 2.); + assert_eq!((-$max as $fty).midpoint($min_pos), -$max / 2.); + assert_eq!(($max as $fty).midpoint(-$min_pos), $max / 2.); + assert_eq!((-$max as $fty).midpoint(-$min_pos), -$max / 2.); + assert_eq!(($min_pos as $fty).midpoint($max), $max / 2.); + assert_eq!(($min_pos as $fty).midpoint(-$max), -$max / 2.); + assert_eq!((-$min_pos as $fty).midpoint($max), $max / 2.); + assert_eq!((-$min_pos as $fty).midpoint(-$max), -$max / 2.); + assert_eq!(($max as $fty).midpoint($max), $max); + assert_eq!(($min_pos as $fty).midpoint($min_pos), $min_pos); + assert_eq!((-$min_pos as $fty).midpoint(-$min_pos), -$min_pos); + assert_eq!(($max as $fty).midpoint(5.0), $max / 2.0 + 2.5); + assert_eq!(($max as $fty).midpoint(-5.0), $max / 2.0 - 2.5); + assert_eq!(($inf as $fty).midpoint($inf), $inf); + assert_eq!(($neginf as $fty).midpoint($neginf), $neginf); + assert!(($nan as $fty).midpoint(1.0).is_nan()); + assert!((1.0 as $fty).midpoint($nan).is_nan()); + assert!(($nan as $fty).midpoint($nan).is_nan()); + } + #[test] fn rem_euclid() { let a: $fty = 42.0; assert!($inf.rem_euclid(a).is_nan()); @@ -867,5 +899,23 @@ macro_rules! test_float { }; } -test_float!(f32, f32, f32::INFINITY, f32::NEG_INFINITY, f32::NAN); -test_float!(f64, f64, f64::INFINITY, f64::NEG_INFINITY, f64::NAN); +test_float!( + f32, + f32, + f32::INFINITY, + f32::NEG_INFINITY, + f32::NAN, + f32::MIN, + f32::MAX, + f32::MIN_POSITIVE +); +test_float!( + f64, + f64, + f64::INFINITY, + f64::NEG_INFINITY, + f64::NAN, + f64::MIN, + f64::MAX, + f64::MIN_POSITIVE +); diff --git a/library/core/tests/num/uint_macros.rs b/library/core/tests/num/uint_macros.rs index 15ae9f2324f..7d6203db0b9 100644 --- a/library/core/tests/num/uint_macros.rs +++ b/library/core/tests/num/uint_macros.rs @@ -252,6 +252,32 @@ macro_rules! uint_module { assert_eq!($T::MAX.borrowing_sub(0, true), ($T::MAX - 1, false)); assert_eq!($T::MAX.borrowing_sub($T::MAX, true), ($T::MAX, true)); } + + #[test] + fn test_midpoint() { + assert_eq!(<$T>::midpoint(1, 3), 2); + assert_eq!(<$T>::midpoint(3, 1), 2); + + assert_eq!(<$T>::midpoint(0, 0), 0); + assert_eq!(<$T>::midpoint(0, 2), 1); + assert_eq!(<$T>::midpoint(2, 0), 1); + assert_eq!(<$T>::midpoint(2, 2), 2); + + assert_eq!(<$T>::midpoint(1, 4), 2); + assert_eq!(<$T>::midpoint(4, 1), 2); + assert_eq!(<$T>::midpoint(3, 4), 3); + assert_eq!(<$T>::midpoint(4, 3), 3); + + assert_eq!(<$T>::midpoint(<$T>::MIN, <$T>::MAX), (<$T>::MAX - <$T>::MIN) / 2); + assert_eq!(<$T>::midpoint(<$T>::MAX, <$T>::MIN), (<$T>::MAX - <$T>::MIN) / 2); + assert_eq!(<$T>::midpoint(<$T>::MIN, <$T>::MIN), <$T>::MIN); + assert_eq!(<$T>::midpoint(<$T>::MAX, <$T>::MAX), <$T>::MAX); + + assert_eq!(<$T>::midpoint(<$T>::MIN, 6), <$T>::MIN / 2 + 3); + assert_eq!(<$T>::midpoint(6, <$T>::MIN), <$T>::MIN / 2 + 3); + assert_eq!(<$T>::midpoint(<$T>::MAX, 6), (<$T>::MAX - <$T>::MIN) / 2 + 3); + assert_eq!(<$T>::midpoint(6, <$T>::MAX), (<$T>::MAX - <$T>::MIN) / 2 + 3); + } } }; } diff --git a/library/portable-simd/crates/core_simd/src/masks.rs b/library/portable-simd/crates/core_simd/src/masks.rs index e58df80fca8..e0f3c7beef6 100644 --- a/library/portable-simd/crates/core_simd/src/masks.rs +++ b/library/portable-simd/crates/core_simd/src/masks.rs @@ -88,7 +88,7 @@ impl_element! { isize } /// The layout of this type is unspecified, and may change between platforms /// and/or Rust versions, and code should not assume that it is equivalent to /// `[T; LANES]`. -#[repr(transparent)] +#[cfg_attr(not(doc), repr(transparent))] // work around https://github.com/rust-lang/rust/issues/90435 pub struct Mask<T, const LANES: usize>(mask_impl::Mask<T, LANES>) where T: MaskElement, diff --git a/library/std/src/fs.rs b/library/std/src/fs.rs index 6640c7fb162..2a6b1a5ec73 100644 --- a/library/std/src/fs.rs +++ b/library/std/src/fs.rs @@ -1946,7 +1946,7 @@ pub fn rename<P: AsRef<Path>, Q: AsRef<Path>>(from: P, to: Q) -> io::Result<()> /// On success, the total number of bytes copied is returned and it is equal to /// the length of the `to` file as reported by `metadata`. /// -/// If you’re wanting to copy the contents of one file to another and you’re +/// If you want to copy the contents of one file to another and you’re /// working with [`File`]s, see the [`io::copy()`] function. /// /// # Platform-specific behavior diff --git a/library/std/src/io/copy.rs b/library/std/src/io/copy.rs index 38b98afffa1..1d9d93f5b64 100644 --- a/library/std/src/io/copy.rs +++ b/library/std/src/io/copy.rs @@ -10,7 +10,7 @@ use crate::mem::MaybeUninit; /// On success, the total number of bytes that were copied from /// `reader` to `writer` is returned. /// -/// If you’re wanting to copy the contents of one file to another and you’re +/// If you want to copy the contents of one file to another and you’re /// working with filesystem paths, see the [`fs::copy`] function. /// /// [`fs::copy`]: crate::fs::copy diff --git a/library/std/src/os/windows/io/handle.rs b/library/std/src/os/windows/io/handle.rs index 280757a41a2..cbf8209a5ad 100644 --- a/library/std/src/os/windows/io/handle.rs +++ b/library/std/src/os/windows/io/handle.rs @@ -437,6 +437,42 @@ impl<T: AsHandle> AsHandle for &mut T { } } +#[stable(feature = "as_windows_ptrs", since = "CURRENT_RUSTC_VERSION")] +/// This impl allows implementing traits that require `AsHandle` on Arc. +/// ``` +/// # #[cfg(windows)] mod group_cfg { +/// # use std::os::windows::io::AsHandle; +/// use std::fs::File; +/// use std::sync::Arc; +/// +/// trait MyTrait: AsHandle {} +/// impl MyTrait for Arc<File> {} +/// impl MyTrait for Box<File> {} +/// # } +/// ``` +impl<T: AsHandle> AsHandle for crate::sync::Arc<T> { + #[inline] + fn as_handle(&self) -> BorrowedHandle<'_> { + (**self).as_handle() + } +} + +#[stable(feature = "as_windows_ptrs", since = "CURRENT_RUSTC_VERSION")] +impl<T: AsHandle> AsHandle for crate::rc::Rc<T> { + #[inline] + fn as_handle(&self) -> BorrowedHandle<'_> { + (**self).as_handle() + } +} + +#[stable(feature = "as_windows_ptrs", since = "CURRENT_RUSTC_VERSION")] +impl<T: AsHandle> AsHandle for Box<T> { + #[inline] + fn as_handle(&self) -> BorrowedHandle<'_> { + (**self).as_handle() + } +} + #[stable(feature = "io_safety", since = "1.63.0")] impl AsHandle for BorrowedHandle<'_> { #[inline] diff --git a/library/std/src/os/windows/io/socket.rs b/library/std/src/os/windows/io/socket.rs index eb6097a89a6..0c90d55c024 100644 --- a/library/std/src/os/windows/io/socket.rs +++ b/library/std/src/os/windows/io/socket.rs @@ -254,6 +254,42 @@ impl<T: AsSocket> AsSocket for &mut T { } } +#[stable(feature = "as_windows_ptrs", since = "CURRENT_RUSTC_VERSION")] +/// This impl allows implementing traits that require `AsSocket` on Arc. +/// ``` +/// # #[cfg(windows)] mod group_cfg { +/// # use std::os::windows::io::AsSocket; +/// use std::net::UdpSocket; +/// use std::sync::Arc; +/// +/// trait MyTrait: AsSocket {} +/// impl MyTrait for Arc<UdpSocket> {} +/// impl MyTrait for Box<UdpSocket> {} +/// # } +/// ``` +impl<T: AsSocket> AsSocket for crate::sync::Arc<T> { + #[inline] + fn as_socket(&self) -> BorrowedSocket<'_> { + (**self).as_socket() + } +} + +#[stable(feature = "as_windows_ptrs", since = "CURRENT_RUSTC_VERSION")] +impl<T: AsSocket> AsSocket for crate::rc::Rc<T> { + #[inline] + fn as_socket(&self) -> BorrowedSocket<'_> { + (**self).as_socket() + } +} + +#[stable(feature = "as_windows_ptrs", since = "CURRENT_RUSTC_VERSION")] +impl<T: AsSocket> AsSocket for Box<T> { + #[inline] + fn as_socket(&self) -> BorrowedSocket<'_> { + (**self).as_socket() + } +} + #[stable(feature = "io_safety", since = "1.63.0")] impl AsSocket for BorrowedSocket<'_> { #[inline] diff --git a/library/std/src/sync/mpmc/error.rs b/library/std/src/sync/mpmc/error.rs index 1b8a1f38797..33b2bff8534 100644 --- a/library/std/src/sync/mpmc/error.rs +++ b/library/std/src/sync/mpmc/error.rs @@ -35,7 +35,7 @@ impl<T> fmt::Display for SendTimeoutError<T> { } } -impl<T: Send> error::Error for SendTimeoutError<T> {} +impl<T> error::Error for SendTimeoutError<T> {} impl<T> From<SendError<T>> for SendTimeoutError<T> { fn from(err: SendError<T>) -> SendTimeoutError<T> { diff --git a/library/std/src/sync/mpsc/mod.rs b/library/std/src/sync/mpsc/mod.rs index 6e3c28f10bb..0e0c87d1c74 100644 --- a/library/std/src/sync/mpsc/mod.rs +++ b/library/std/src/sync/mpsc/mod.rs @@ -1124,7 +1124,7 @@ impl<T> fmt::Display for SendError<T> { } #[stable(feature = "rust1", since = "1.0.0")] -impl<T: Send> error::Error for SendError<T> { +impl<T> error::Error for SendError<T> { #[allow(deprecated)] fn description(&self) -> &str { "sending on a closed channel" @@ -1152,7 +1152,7 @@ impl<T> fmt::Display for TrySendError<T> { } #[stable(feature = "rust1", since = "1.0.0")] -impl<T: Send> error::Error for TrySendError<T> { +impl<T> error::Error for TrySendError<T> { #[allow(deprecated)] fn description(&self) -> &str { match *self { diff --git a/library/std/src/thread/local.rs b/library/std/src/thread/local.rs index 3b7c31826b9..1b86d898cc7 100644 --- a/library/std/src/thread/local.rs +++ b/library/std/src/thread/local.rs @@ -18,8 +18,8 @@ use crate::fmt; /// target platform. It is instantiated with the [`thread_local!`] macro and the /// primary method is the [`with`] method. /// -/// The [`with`] method yields a reference to the contained value which cannot be -/// sent across threads or escape the given closure. +/// The [`with`] method yields a reference to the contained value which cannot +/// outlive the current thread or escape the given closure. /// /// [`thread_local!`]: crate::thread_local /// diff --git a/src/bootstrap/Cargo.lock b/src/bootstrap/Cargo.lock index e13157a11ae..9420c4fec5f 100644 --- a/src/bootstrap/Cargo.lock +++ b/src/bootstrap/Cargo.lock @@ -58,6 +58,7 @@ dependencies = [ "once_cell", "opener", "pretty_assertions", + "semver", "serde", "serde_derive", "serde_json", @@ -646,6 +647,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd" [[package]] +name = "semver" +version = "1.0.17" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bebd363326d05ec3e2f532ab7660680f3b02130d780c299bca73469d521bc0ed" + +[[package]] name = "serde" version = "1.0.137" source = "registry+https://github.com/rust-lang/crates.io-index" diff --git a/src/bootstrap/Cargo.toml b/src/bootstrap/Cargo.toml index 55675a2315c..746c8dcfce0 100644 --- a/src/bootstrap/Cargo.toml +++ b/src/bootstrap/Cargo.toml @@ -57,6 +57,7 @@ walkdir = "2" sysinfo = { version = "0.26.0", optional = true } clap = { version = "4.2.4", default-features = false, features = ["std", "usage", "help", "derive", "error-context"] } clap_complete = "4.2.2" +semver = "1.0.17" # Solaris doesn't support flock() and thus fd-lock is not option now [target.'cfg(not(target_os = "solaris"))'.dependencies] diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs index bf3bc3247ac..710c8b52194 100644 --- a/src/bootstrap/config.rs +++ b/src/bootstrap/config.rs @@ -24,6 +24,7 @@ pub use crate::flags::Subcommand; use crate::flags::{Color, Flags, Warnings}; use crate::util::{exe, output, t}; use once_cell::sync::OnceCell; +use semver::Version; use serde::{Deserialize, Deserializer}; use serde_derive::Deserialize; @@ -1019,6 +1020,7 @@ impl Config { config.download_beta_toolchain(); config.out.join(config.build.triple).join("stage0/bin/rustc") }); + config.initial_cargo = build .cargo .map(|cargo| { @@ -1680,6 +1682,42 @@ impl Config { self.rust_codegen_backends.get(0).cloned() } + pub fn check_build_rustc_version(&self) { + if self.dry_run() { + return; + } + + // check rustc version is same or lower with 1 apart from the building one + let mut cmd = Command::new(&self.initial_rustc); + cmd.arg("--version"); + let rustc_output = output(&mut cmd) + .lines() + .next() + .unwrap() + .split(' ') + .nth(1) + .unwrap() + .split('-') + .next() + .unwrap() + .to_owned(); + let rustc_version = Version::parse(&rustc_output.trim()).unwrap(); + let source_version = + Version::parse(&fs::read_to_string(self.src.join("src/version")).unwrap().trim()) + .unwrap(); + if !(source_version == rustc_version + || (source_version.major == rustc_version.major + && source_version.minor == rustc_version.minor + 1)) + { + let prev_version = format!("{}.{}.x", source_version.major, source_version.minor - 1); + eprintln!( + "Unexpected rustc version: {}, we should use {}/{} to build source with {}", + rustc_version, prev_version, source_version, source_version + ); + crate::detail_exit(1); + } + } + /// Returns the commit to download, or `None` if we shouldn't download CI artifacts. fn download_ci_rustc_commit(&self, download_rustc: Option<StringOrBool>) -> Option<String> { // If `download-rustc` is not set, default to rebuilding. diff --git a/src/bootstrap/lib.rs b/src/bootstrap/lib.rs index 994336977dc..3756976dee0 100644 --- a/src/bootstrap/lib.rs +++ b/src/bootstrap/lib.rs @@ -414,6 +414,7 @@ impl Build { bootstrap_out.display() ) } + config.check_build_rustc_version(); if rust_info.is_from_tarball() && config.description.is_none() { config.description = Some("built from a source tarball".to_owned()); diff --git a/src/librustdoc/clean/utils.rs b/src/librustdoc/clean/utils.rs index b802fd065fe..17aa6b38e38 100644 --- a/src/librustdoc/clean/utils.rs +++ b/src/librustdoc/clean/utils.rs @@ -594,9 +594,8 @@ pub(super) fn display_macro_source( def_id: DefId, vis: ty::Visibility<DefId>, ) -> String { - let tts: Vec<_> = def.body.tokens.clone().into_trees().collect(); // Extract the spans of all matchers. They represent the "interface" of the macro. - let matchers = tts.chunks(4).map(|arm| &arm[0]); + let matchers = def.body.tokens.chunks(4).map(|arm| &arm[0]); if def.macro_rules { format!("macro_rules! {} {{\n{}}}", name, render_macro_arms(cx.tcx, matchers, ";")) diff --git a/src/tools/compiletest/src/common.rs b/src/tools/compiletest/src/common.rs index 9059a145b43..ba68b5ee9d5 100644 --- a/src/tools/compiletest/src/common.rs +++ b/src/tools/compiletest/src/common.rs @@ -428,7 +428,6 @@ impl TargetCfgs { )) .unwrap(); - let mut current = None; let mut all_targets = HashSet::new(); let mut all_archs = HashSet::new(); let mut all_oses = HashSet::new(); @@ -449,14 +448,11 @@ impl TargetCfgs { } all_pointer_widths.insert(format!("{}bit", cfg.pointer_width)); - if target == config.target { - current = Some(cfg); - } all_targets.insert(target.into()); } Self { - current: current.expect("current target not found"), + current: Self::get_current_target_config(config), all_targets, all_archs, all_oses, @@ -467,6 +463,89 @@ impl TargetCfgs { all_pointer_widths, } } + + fn get_current_target_config(config: &Config) -> TargetCfg { + let mut arch = None; + let mut os = None; + let mut env = None; + let mut abi = None; + let mut families = Vec::new(); + let mut pointer_width = None; + let mut endian = None; + let mut panic = None; + + for config in + rustc_output(config, &["--print=cfg", "--target", &config.target]).trim().lines() + { + let (name, value) = config + .split_once("=\"") + .map(|(name, value)| { + ( + name, + Some( + value + .strip_suffix("\"") + .expect("key-value pair should be properly quoted"), + ), + ) + }) + .unwrap_or_else(|| (config, None)); + + match name { + "target_arch" => { + arch = Some(value.expect("target_arch should be a key-value pair").to_string()); + } + "target_os" => { + os = Some(value.expect("target_os sould be a key-value pair").to_string()); + } + "target_env" => { + env = Some(value.expect("target_env should be a key-value pair").to_string()); + } + "target_abi" => { + abi = Some(value.expect("target_abi should be a key-value pair").to_string()); + } + "target_family" => { + families + .push(value.expect("target_family should be a key-value pair").to_string()); + } + "target_pointer_width" => { + pointer_width = Some( + value + .expect("target_pointer_width should be a key-value pair") + .parse::<u32>() + .expect("target_pointer_width should be a valid u32"), + ); + } + "target_endian" => { + endian = Some(match value.expect("target_endian should be a key-value pair") { + "big" => Endian::Big, + "little" => Endian::Little, + _ => panic!("target_endian should be either 'big' or 'little'"), + }); + } + "panic" => { + panic = Some(match value.expect("panic should be a key-value pair") { + "abort" => PanicStrategy::Abort, + "unwind" => PanicStrategy::Unwind, + _ => panic!("panic should be either 'abort' or 'unwind'"), + }); + } + _ => (), + } + } + + TargetCfg { + arch: arch.expect("target configuration should specify target_arch"), + os: os.expect("target configuration should specify target_os"), + env: env.expect("target configuration should specify target_env"), + abi: abi.expect("target configuration should specify target_abi"), + families, + pointer_width: pointer_width + .expect("target configuration should specify target_pointer_width"), + endian: endian.expect("target configuration should specify target_endian"), + panic: panic.expect("target configuration should specify panic"), + } + } } #[derive(Clone, Debug, serde::Deserialize)] diff --git a/src/tools/linkchecker/main.rs b/src/tools/linkchecker/main.rs index 4170c32f1fe..c8a370085a0 100644 --- a/src/tools/linkchecker/main.rs +++ b/src/tools/linkchecker/main.rs @@ -139,18 +139,18 @@ enum FileEntry { type Cache = HashMap<String, FileEntry>; fn small_url_encode(s: &str) -> String { - s.replace("<", "%3C") - .replace(">", "%3E") - .replace(" ", "%20") - .replace("?", "%3F") - .replace("'", "%27") - .replace("&", "%26") - .replace(",", "%2C") - .replace(":", "%3A") - .replace(";", "%3B") - .replace("[", "%5B") - .replace("]", "%5D") - .replace("\"", "%22") + s.replace('<', "%3C") + .replace('>', "%3E") + .replace(' ', "%20") + .replace('?', "%3F") + .replace('\'', "%27") + .replace('&', "%26") + .replace(',', "%2C") + .replace(':', "%3A") + .replace(';', "%3B") + .replace('[', "%5B") + .replace(']', "%5D") + .replace('\"', "%22") } impl Checker { @@ -267,7 +267,6 @@ impl Checker { FileEntry::OtherFile => return, FileEntry::Redirect { target } => { let t = target.clone(); - drop(target); let (target, redir_entry) = self.load_file(&t, report); match redir_entry { FileEntry::Missing => { @@ -391,7 +390,7 @@ impl Checker { const ERROR_INVALID_NAME: i32 = 123; let pretty_path = - file.strip_prefix(&self.root).unwrap_or(&file).to_str().unwrap().to_string(); + file.strip_prefix(&self.root).unwrap_or(file).to_str().unwrap().to_string(); let entry = self.cache.entry(pretty_path.clone()).or_insert_with(|| match fs::metadata(file) { @@ -470,10 +469,8 @@ fn is_exception(file: &Path, link: &str) -> bool { // NOTE: This cannot be added to `LINKCHECK_EXCEPTIONS` because the resolved path // calculated in `check` function is outside `build/<triple>/doc` dir. // So the `strip_prefix` method just returns the old absolute broken path. - if file.ends_with("std/primitive.slice.html") { - if link.ends_with("primitive.slice.html") { - return true; - } + if file.ends_with("std/primitive.slice.html") && link.ends_with("primitive.slice.html") { + return true; } false } @@ -545,7 +542,7 @@ fn with_attrs_in_source<F: FnMut(&str, usize, &str)>(source: &str, attr: &str, m fn parse_ids(ids: &mut HashSet<String>, file: &str, source: &str, report: &mut Report) { if ids.is_empty() { with_attrs_in_source(source, " id", |fragment, i, _| { - let frag = fragment.trim_start_matches("#").to_owned(); + let frag = fragment.trim_start_matches('#').to_owned(); let encoded = small_url_encode(&frag); if !ids.insert(frag) { report.errors += 1; diff --git a/src/tools/miri/src/bin/miri.rs b/src/tools/miri/src/bin/miri.rs index 28f9912e283..083dd4800d9 100644 --- a/src/tools/miri/src/bin/miri.rs +++ b/src/tools/miri/src/bin/miri.rs @@ -28,8 +28,8 @@ use rustc_middle::{ middle::exported_symbols::{ ExportedSymbol, SymbolExportInfo, SymbolExportKind, SymbolExportLevel, }, - query::LocalCrate, - ty::{query::ExternProviders, TyCtxt}, + query::{ExternProviders, LocalCrate}, + ty::TyCtxt, }; use rustc_session::config::OptLevel; diff --git a/src/tools/miri/src/diagnostics.rs b/src/tools/miri/src/diagnostics.rs index a93f3eb84f2..e3f81a78eea 100644 --- a/src/tools/miri/src/diagnostics.rs +++ b/src/tools/miri/src/diagnostics.rs @@ -289,7 +289,7 @@ pub fn report_error<'tcx, 'mir>( (None, format!("see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information")), ], InvalidProgram( - InvalidProgramInfo::AlreadyReported(rustc_errors::ErrorGuaranteed { .. }) + InvalidProgramInfo::AlreadyReported(_) ) => { // This got already reported. No point in reporting it again. return None; diff --git a/src/tools/miri/src/lib.rs b/src/tools/miri/src/lib.rs index fc938080a0e..893a4dbd4c8 100644 --- a/src/tools/miri/src/lib.rs +++ b/src/tools/miri/src/lib.rs @@ -47,7 +47,6 @@ extern crate rustc_ast; extern crate rustc_middle; extern crate rustc_const_eval; extern crate rustc_data_structures; -extern crate rustc_errors; extern crate rustc_hir; extern crate rustc_index; extern crate rustc_session; diff --git a/tests/codegen/binary-search-index-no-bound-check.rs b/tests/codegen/binary-search-index-no-bound-check.rs index c1766a4a44a..595969a8979 100644 --- a/tests/codegen/binary-search-index-no-bound-check.rs +++ b/tests/codegen/binary-search-index-no-bound-check.rs @@ -9,7 +9,9 @@ #[no_mangle] pub fn binary_search_index_no_bounds_check(s: &[u8]) -> u8 { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check if let Ok(idx) = s.binary_search(&b'\\') { s[idx] } else { diff --git a/tests/codegen/issues/issue-73396-bounds-check-after-position.rs b/tests/codegen/issues/issue-73396-bounds-check-after-position.rs index 8d07a67a1b4..2d779788791 100644 --- a/tests/codegen/issues/issue-73396-bounds-check-after-position.rs +++ b/tests/codegen/issues/issue-73396-bounds-check-after-position.rs @@ -9,7 +9,10 @@ #[no_mangle] pub fn position_slice_to_no_bounds_check(s: &[u8]) -> &[u8] { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check + // CHECK-NOT: unreachable if let Some(idx) = s.iter().position(|b| *b == b'\\') { &s[..idx] } else { @@ -21,7 +24,10 @@ pub fn position_slice_to_no_bounds_check(s: &[u8]) -> &[u8] { #[no_mangle] pub fn position_slice_from_no_bounds_check(s: &[u8]) -> &[u8] { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check + // CHECK-NOT: unreachable if let Some(idx) = s.iter().position(|b| *b == b'\\') { &s[idx..] } else { @@ -33,7 +39,10 @@ pub fn position_slice_from_no_bounds_check(s: &[u8]) -> &[u8] { #[no_mangle] pub fn position_index_no_bounds_check(s: &[u8]) -> u8 { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check + // CHECK-NOT: unreachable if let Some(idx) = s.iter().position(|b| *b == b'\\') { s[idx] } else { @@ -44,7 +53,10 @@ pub fn position_index_no_bounds_check(s: &[u8]) -> u8 { #[no_mangle] pub fn rposition_slice_to_no_bounds_check(s: &[u8]) -> &[u8] { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check + // CHECK-NOT: unreachable if let Some(idx) = s.iter().rposition(|b| *b == b'\\') { &s[..idx] } else { @@ -56,7 +68,10 @@ pub fn rposition_slice_to_no_bounds_check(s: &[u8]) -> &[u8] { #[no_mangle] pub fn rposition_slice_from_no_bounds_check(s: &[u8]) -> &[u8] { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check + // CHECK-NOT: unreachable if let Some(idx) = s.iter().rposition(|b| *b == b'\\') { &s[idx..] } else { @@ -68,7 +83,10 @@ pub fn rposition_slice_from_no_bounds_check(s: &[u8]) -> &[u8] { #[no_mangle] pub fn rposition_index_no_bounds_check(s: &[u8]) -> u8 { // CHECK-NOT: panic - // CHECK-NOT: slice_index_len_fail + // CHECK-NOT: slice_start_index_len_fail + // CHECK-NOT: slice_end_index_len_fail + // CHECK-NOT: panic_bounds_check + // CHECK-NOT: unreachable if let Some(idx) = s.iter().rposition(|b| *b == b'\\') { s[idx] } else { diff --git a/tests/mir-opt/building/custom/projections.copy_for_deref.built.after.mir b/tests/mir-opt/building/custom/projections.copy_for_deref.built.after.mir new file mode 100644 index 00000000000..5233d0489c6 --- /dev/null +++ b/tests/mir-opt/building/custom/projections.copy_for_deref.built.after.mir @@ -0,0 +1,12 @@ +// MIR for `copy_for_deref` after built + +fn copy_for_deref(_1: (&i32, i32)) -> i32 { + let mut _0: i32; // return place in scope 0 at $DIR/projections.rs:+0:38: +0:41 + let mut _2: &i32; // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL + + bb0: { + _2 = deref_copy (_1.0: &i32); // scope 0 at $DIR/projections.rs:+4:13: +4:37 + _0 = (*_2); // scope 0 at $DIR/projections.rs:+5:13: +5:24 + return; // scope 0 at $DIR/projections.rs:+6:13: +6:21 + } +} diff --git a/tests/mir-opt/building/custom/projections.rs b/tests/mir-opt/building/custom/projections.rs index 5e472e531c7..3c155deae4b 100644 --- a/tests/mir-opt/building/custom/projections.rs +++ b/tests/mir-opt/building/custom/projections.rs @@ -21,13 +21,10 @@ fn unions(u: U) -> i32 { #[custom_mir(dialect = "analysis", phase = "post-cleanup")] fn tuples(i: (u32, i32)) -> (u32, i32) { mir!( - // FIXME(JakobDegen): This is necessary because we can't give type hints for `RET` - let temp: (u32, i32); + type RET = (u32, i32); { - temp.0 = i.0; - temp.1 = i.1; - - RET = temp; + RET.0 = i.0; + RET.1 = i.1; Return() } ) @@ -71,6 +68,19 @@ fn simple_index(a: [i32; 10], b: &[i32]) -> i32 { }) } +// EMIT_MIR projections.copy_for_deref.built.after.mir +#[custom_mir(dialect = "runtime", phase = "initial")] +fn copy_for_deref(x: (&i32, i32)) -> i32 { + mir!( + let temp: &i32; + { + temp = CopyForDeref(x.0); + RET = *temp; + Return() + } + ) +} + fn main() { assert_eq!(unions(U { a: 5 }), 5); assert_eq!(tuples((5, 6)), (5, 6)); @@ -82,4 +92,7 @@ fn main() { assert_eq!(o, Some(10)); assert_eq!(simple_index([0; 10], &[0; 10]), 0); + + let one = 1; + assert_eq!(copy_for_deref((&one, one)), 1); } diff --git a/tests/mir-opt/building/custom/projections.tuples.built.after.mir b/tests/mir-opt/building/custom/projections.tuples.built.after.mir index 65487d3c9ed..dec575200c6 100644 --- a/tests/mir-opt/building/custom/projections.tuples.built.after.mir +++ b/tests/mir-opt/building/custom/projections.tuples.built.after.mir @@ -2,12 +2,10 @@ fn tuples(_1: (u32, i32)) -> (u32, i32) { let mut _0: (u32, i32); // return place in scope 0 at $DIR/projections.rs:+0:29: +0:39 - let mut _2: (u32, i32); // in scope 0 at $SRC_DIR/core/src/intrinsics/mir.rs:LL:COL bb0: { - (_2.0: u32) = (_1.0: u32); // scope 0 at $DIR/projections.rs:+5:13: +5:25 - (_2.1: i32) = (_1.1: i32); // scope 0 at $DIR/projections.rs:+6:13: +6:25 - _0 = _2; // scope 0 at $DIR/projections.rs:+8:13: +8:23 - return; // scope 0 at $DIR/projections.rs:+9:13: +9:21 + (_0.0: u32) = (_1.0: u32); // scope 0 at $DIR/projections.rs:+4:13: +4:24 + (_0.1: i32) = (_1.1: i32); // scope 0 at $DIR/projections.rs:+5:13: +5:24 + return; // scope 0 at $DIR/projections.rs:+6:13: +6:21 } } diff --git a/tests/run-make-fulldeps/obtain-borrowck/driver.rs b/tests/run-make-fulldeps/obtain-borrowck/driver.rs index 7bd7bb7c1ea..12cbb5a5f12 100644 --- a/tests/run-make-fulldeps/obtain-borrowck/driver.rs +++ b/tests/run-make-fulldeps/obtain-borrowck/driver.rs @@ -24,8 +24,8 @@ use rustc_hir::def::DefKind; use rustc_hir::def_id::LocalDefId; use rustc_interface::interface::Compiler; use rustc_interface::{Config, Queries}; -use rustc_middle::ty::query::query_values::mir_borrowck; -use rustc_middle::ty::query::{ExternProviders, Providers}; +use rustc_middle::query::query_values::mir_borrowck; +use rustc_middle::query::{ExternProviders, Providers}; use rustc_middle::ty::TyCtxt; use rustc_session::Session; use std::cell::RefCell; diff --git a/tests/ui/consts/const-eval/format.stderr b/tests/ui/consts/const-eval/format.stderr index 70a1abb0a95..434b0744304 100644 --- a/tests/ui/consts/const-eval/format.stderr +++ b/tests/ui/consts/const-eval/format.stderr @@ -43,62 +43,6 @@ LL | println!("{:?}", 0); = note: calls in constant functions are limited to constant functions, tuple structs and tuple variants = note: this error originates in the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) -note: erroneous constant used - --> $DIR/format.rs:2:12 - | -LL | panic!("{:?}", 0); - | ^^^^^^ - -note: erroneous constant used - --> $DIR/format.rs:2:12 - | -LL | panic!("{:?}", 0); - | ^^^^^^ - -note: erroneous constant used - --> $DIR/format.rs:2:20 - | -LL | panic!("{:?}", 0); - | ^ - | - = note: this note originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) - -note: erroneous constant used - --> $DIR/format.rs:2:20 - | -LL | panic!("{:?}", 0); - | ^ - | - = note: this note originates in the macro `$crate::const_format_args` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) - -note: erroneous constant used - --> $DIR/format.rs:8:14 - | -LL | println!("{:?}", 0); - | ^^^^^^ - -note: erroneous constant used - --> $DIR/format.rs:8:14 - | -LL | println!("{:?}", 0); - | ^^^^^^ - -note: erroneous constant used - --> $DIR/format.rs:8:22 - | -LL | println!("{:?}", 0); - | ^ - | - = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) - -note: erroneous constant used - --> $DIR/format.rs:8:22 - | -LL | println!("{:?}", 0); - | ^ - | - = note: this note originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info) - error: aborting due to 5 previous errors For more information about this error, try `rustc --explain E0015`. diff --git a/tests/ui/consts/const-integer-bool-ops.rs b/tests/ui/consts/const-integer-bool-ops.rs index 4110ae3e456..35915a7a606 100644 --- a/tests/ui/consts/const-integer-bool-ops.rs +++ b/tests/ui/consts/const-integer-bool-ops.rs @@ -6,7 +6,6 @@ const X: usize = 42 && 39; //~| ERROR mismatched types //~| expected `usize`, found `bool` const ARR: [i32; X] = [99; 34]; -//~^ constant const X1: usize = 42 || 39; //~^ ERROR mismatched types @@ -16,7 +15,6 @@ const X1: usize = 42 || 39; //~| ERROR mismatched types //~| expected `usize`, found `bool` const ARR1: [i32; X1] = [99; 47]; -//~^ constant const X2: usize = -42 || -39; //~^ ERROR mismatched types @@ -26,7 +24,6 @@ const X2: usize = -42 || -39; //~| ERROR mismatched types //~| expected `usize`, found `bool` const ARR2: [i32; X2] = [99; 18446744073709551607]; -//~^ constant const X3: usize = -42 && -39; //~^ ERROR mismatched types @@ -36,43 +33,36 @@ const X3: usize = -42 && -39; //~| ERROR mismatched types //~| expected `usize`, found `bool` const ARR3: [i32; X3] = [99; 6]; -//~^ constant const Y: usize = 42.0 == 42.0; //~^ ERROR mismatched types //~| expected `usize`, found `bool` const ARRR: [i32; Y] = [99; 1]; -//~^ constant const Y1: usize = 42.0 >= 42.0; //~^ ERROR mismatched types //~| expected `usize`, found `bool` const ARRR1: [i32; Y1] = [99; 1]; -//~^ constant const Y2: usize = 42.0 <= 42.0; //~^ ERROR mismatched types //~| expected `usize`, found `bool` const ARRR2: [i32; Y2] = [99; 1]; -//~^ constant const Y3: usize = 42.0 > 42.0; //~^ ERROR mismatched types //~| expected `usize`, found `bool` const ARRR3: [i32; Y3] = [99; 0]; -//~^ constant const Y4: usize = 42.0 < 42.0; //~^ ERROR mismatched types //~| expected `usize`, found `bool` const ARRR4: [i32; Y4] = [99; 0]; -//~^ constant const Y5: usize = 42.0 != 42.0; //~^ ERROR mismatched types //~| expected `usize`, found `bool` const ARRR5: [i32; Y5] = [99; 0]; -//~^ constant fn main() { let _ = ARR; diff --git a/tests/ui/consts/const-integer-bool-ops.stderr b/tests/ui/consts/const-integer-bool-ops.stderr index b5c3b22fdbe..4e503e5a5c0 100644 --- a/tests/ui/consts/const-integer-bool-ops.stderr +++ b/tests/ui/consts/const-integer-bool-ops.stderr @@ -16,156 +16,96 @@ error[E0308]: mismatched types LL | const X: usize = 42 && 39; | ^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:8:18 - | -LL | const ARR: [i32; X] = [99; 34]; - | ^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:11:19 + --> $DIR/const-integer-bool-ops.rs:10:19 | LL | const X1: usize = 42 || 39; | ^^ expected `bool`, found integer error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:11:25 + --> $DIR/const-integer-bool-ops.rs:10:25 | LL | const X1: usize = 42 || 39; | ^^ expected `bool`, found integer error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:11:19 + --> $DIR/const-integer-bool-ops.rs:10:19 | LL | const X1: usize = 42 || 39; | ^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:18:19 - | -LL | const ARR1: [i32; X1] = [99; 47]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:21:19 + --> $DIR/const-integer-bool-ops.rs:19:19 | LL | const X2: usize = -42 || -39; | ^^^ expected `bool`, found integer error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:21:26 + --> $DIR/const-integer-bool-ops.rs:19:26 | LL | const X2: usize = -42 || -39; | ^^^ expected `bool`, found integer error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:21:19 + --> $DIR/const-integer-bool-ops.rs:19:19 | LL | const X2: usize = -42 || -39; | ^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:28:19 - | -LL | const ARR2: [i32; X2] = [99; 18446744073709551607]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:31:19 + --> $DIR/const-integer-bool-ops.rs:28:19 | LL | const X3: usize = -42 && -39; | ^^^ expected `bool`, found integer error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:31:26 + --> $DIR/const-integer-bool-ops.rs:28:26 | LL | const X3: usize = -42 && -39; | ^^^ expected `bool`, found integer error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:31:19 + --> $DIR/const-integer-bool-ops.rs:28:19 | LL | const X3: usize = -42 && -39; | ^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:38:19 - | -LL | const ARR3: [i32; X3] = [99; 6]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:41:18 + --> $DIR/const-integer-bool-ops.rs:37:18 | LL | const Y: usize = 42.0 == 42.0; | ^^^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:44:19 - | -LL | const ARRR: [i32; Y] = [99; 1]; - | ^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:47:19 + --> $DIR/const-integer-bool-ops.rs:42:19 | LL | const Y1: usize = 42.0 >= 42.0; | ^^^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:50:20 - | -LL | const ARRR1: [i32; Y1] = [99; 1]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:53:19 + --> $DIR/const-integer-bool-ops.rs:47:19 | LL | const Y2: usize = 42.0 <= 42.0; | ^^^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:56:20 - | -LL | const ARRR2: [i32; Y2] = [99; 1]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:59:19 + --> $DIR/const-integer-bool-ops.rs:52:19 | LL | const Y3: usize = 42.0 > 42.0; | ^^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:62:20 - | -LL | const ARRR3: [i32; Y3] = [99; 0]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:65:19 + --> $DIR/const-integer-bool-ops.rs:57:19 | LL | const Y4: usize = 42.0 < 42.0; | ^^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:68:20 - | -LL | const ARRR4: [i32; Y4] = [99; 0]; - | ^^ - error[E0308]: mismatched types - --> $DIR/const-integer-bool-ops.rs:71:19 + --> $DIR/const-integer-bool-ops.rs:62:19 | LL | const Y5: usize = 42.0 != 42.0; | ^^^^^^^^^^^^ expected `usize`, found `bool` -note: erroneous constant used - --> $DIR/const-integer-bool-ops.rs:74:20 - | -LL | const ARRR5: [i32; Y5] = [99; 0]; - | ^^ - error: aborting due to 18 previous errors For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/consts/const-mut-refs/issue-76510.32bit.stderr b/tests/ui/consts/const-mut-refs/issue-76510.32bit.stderr index 109d15a8e4d..61b00be345f 100644 --- a/tests/ui/consts/const-mut-refs/issue-76510.32bit.stderr +++ b/tests/ui/consts/const-mut-refs/issue-76510.32bit.stderr @@ -19,12 +19,6 @@ error[E0596]: cannot borrow data in a `&` reference as mutable LL | const S: &'static mut str = &mut " hello "; | ^^^^^^^^^^^^^^ cannot borrow as mutable -note: erroneous constant used - --> $DIR/issue-76510.rs:11:70 - | -LL | let s = transmute::<(*const u8, usize), &ManuallyDrop<str>>((S.as_ptr(), 3)); - | ^ - error: aborting due to 3 previous errors Some errors have detailed explanations: E0596, E0658, E0764. diff --git a/tests/ui/consts/const-mut-refs/issue-76510.64bit.stderr b/tests/ui/consts/const-mut-refs/issue-76510.64bit.stderr index 109d15a8e4d..61b00be345f 100644 --- a/tests/ui/consts/const-mut-refs/issue-76510.64bit.stderr +++ b/tests/ui/consts/const-mut-refs/issue-76510.64bit.stderr @@ -19,12 +19,6 @@ error[E0596]: cannot borrow data in a `&` reference as mutable LL | const S: &'static mut str = &mut " hello "; | ^^^^^^^^^^^^^^ cannot borrow as mutable -note: erroneous constant used - --> $DIR/issue-76510.rs:11:70 - | -LL | let s = transmute::<(*const u8, usize), &ManuallyDrop<str>>((S.as_ptr(), 3)); - | ^ - error: aborting due to 3 previous errors Some errors have detailed explanations: E0596, E0658, E0764. diff --git a/tests/ui/consts/const-mut-refs/issue-76510.rs b/tests/ui/consts/const-mut-refs/issue-76510.rs index b853e2737f1..143d2fb6b9a 100644 --- a/tests/ui/consts/const-mut-refs/issue-76510.rs +++ b/tests/ui/consts/const-mut-refs/issue-76510.rs @@ -9,7 +9,6 @@ const S: &'static mut str = &mut " hello "; const fn trigger() -> [(); unsafe { let s = transmute::<(*const u8, usize), &ManuallyDrop<str>>((S.as_ptr(), 3)); - //~^ constant 0 }] { [(); 0] diff --git a/tests/ui/consts/const-tup-index-span.rs b/tests/ui/consts/const-tup-index-span.rs index 18f4f59d378..e77d392e694 100644 --- a/tests/ui/consts/const-tup-index-span.rs +++ b/tests/ui/consts/const-tup-index-span.rs @@ -4,7 +4,6 @@ const TUP: (usize,) = 5usize << 64; //~^ ERROR mismatched types //~| expected `(usize,)`, found `usize` const ARR: [i32; TUP.0] = []; -//~^ constant fn main() { } diff --git a/tests/ui/consts/const-tup-index-span.stderr b/tests/ui/consts/const-tup-index-span.stderr index 65f0520f8a4..d5df0df9525 100644 --- a/tests/ui/consts/const-tup-index-span.stderr +++ b/tests/ui/consts/const-tup-index-span.stderr @@ -11,12 +11,6 @@ help: use a trailing comma to create a tuple with one element LL | const TUP: (usize,) = (5usize << 64,); | + ++ -note: erroneous constant used - --> $DIR/const-tup-index-span.rs:6:18 - | -LL | const ARR: [i32; TUP.0] = []; - | ^^^ - error: aborting due to previous error For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/consts/issue-54954.rs b/tests/ui/consts/issue-54954.rs index 520bf508ff3..7bcfa057019 100644 --- a/tests/ui/consts/issue-54954.rs +++ b/tests/ui/consts/issue-54954.rs @@ -9,8 +9,6 @@ trait Tt { } fn f(z: [f32; ARR_LEN]) -> [f32; ARR_LEN] { - //~^ constant - //~| constant z } diff --git a/tests/ui/consts/issue-54954.stderr b/tests/ui/consts/issue-54954.stderr index 85055828737..b0701bab793 100644 --- a/tests/ui/consts/issue-54954.stderr +++ b/tests/ui/consts/issue-54954.stderr @@ -16,18 +16,6 @@ LL | | core::mem::size_of::<T>() LL | | } | |_____- `Tt::const_val` defined here -note: erroneous constant used - --> $DIR/issue-54954.rs:11:15 - | -LL | fn f(z: [f32; ARR_LEN]) -> [f32; ARR_LEN] { - | ^^^^^^^ - -note: erroneous constant used - --> $DIR/issue-54954.rs:11:34 - | -LL | fn f(z: [f32; ARR_LEN]) -> [f32; ARR_LEN] { - | ^^^^^^^ - error: aborting due to 2 previous errors Some errors have detailed explanations: E0379, E0790. diff --git a/tests/ui/consts/issue-56164.stderr b/tests/ui/consts/issue-56164.stderr index 003f8474463..e46c649faf0 100644 --- a/tests/ui/consts/issue-56164.stderr +++ b/tests/ui/consts/issue-56164.stderr @@ -28,18 +28,6 @@ error: function pointer calls are not allowed in constant functions LL | input() | ^^^^^^^ -note: erroneous constant used - --> $DIR/issue-56164.rs:1:18 - | -LL | const fn foo() { (||{})() } - | ^^^^^^ - -note: erroneous constant used - --> $DIR/issue-56164.rs:1:18 - | -LL | const fn foo() { (||{})() } - | ^^^^^^ - error: aborting due to 3 previous errors Some errors have detailed explanations: E0015, E0277. diff --git a/tests/ui/consts/issue-66693.stderr b/tests/ui/consts/issue-66693.stderr index e9a3fced61c..f4898fd9732 100644 --- a/tests/ui/consts/issue-66693.stderr +++ b/tests/ui/consts/issue-66693.stderr @@ -22,17 +22,5 @@ LL | panic!(&1); | = note: this error originates in the macro `$crate::panic::panic_2015` which comes from the expansion of the macro `panic` (in Nightly builds, run with -Z macro-backtrace for more info) -note: erroneous constant used - --> $DIR/issue-66693.rs:11:12 - | -LL | panic!(&1); - | ^^ - -note: erroneous constant used - --> $DIR/issue-66693.rs:11:12 - | -LL | panic!(&1); - | ^^ - error: aborting due to 3 previous errors diff --git a/tests/ui/enum-discriminant/issue-41394.rs b/tests/ui/enum-discriminant/issue-41394.rs index 07cad8796e1..06a33081340 100644 --- a/tests/ui/enum-discriminant/issue-41394.rs +++ b/tests/ui/enum-discriminant/issue-41394.rs @@ -5,7 +5,6 @@ enum Foo { enum Bar { A = Foo::A as isize - //~^ const } fn main() {} diff --git a/tests/ui/enum-discriminant/issue-41394.stderr b/tests/ui/enum-discriminant/issue-41394.stderr index 1b5c64628a1..fa95ca9c18a 100644 --- a/tests/ui/enum-discriminant/issue-41394.stderr +++ b/tests/ui/enum-discriminant/issue-41394.stderr @@ -6,12 +6,6 @@ LL | A = "" + 1 | | | &str -note: erroneous constant used - --> $DIR/issue-41394.rs:7:9 - | -LL | A = Foo::A as isize - | ^^^^^^^^^^^^^^^ - error: aborting due to previous error For more information about this error, try `rustc --explain E0369`. diff --git a/tests/ui/generator/drop-tracking-error-body.rs b/tests/ui/generator/drop-tracking-error-body.rs new file mode 100644 index 00000000000..f99d9ab6bf8 --- /dev/null +++ b/tests/ui/generator/drop-tracking-error-body.rs @@ -0,0 +1,18 @@ +// compile-flags: -Zdrop-tracking-mir --edition=2021 + +#![feature(generators)] + +pub async fn async_bad_body() { + match true {} //~ ERROR non-exhaustive patterns: type `bool` is non-empty +} + +pub fn generator_bad_body() { + || { + // 'non-exhaustive pattern' only seems to be reported once, so this annotation doesn't work + // keep the function around so we can make sure it doesn't ICE + match true {}; // ERROR non-exhaustive patterns: type `bool` is non-empty + yield (); + }; +} + +fn main() {} diff --git a/tests/ui/generator/drop-tracking-error-body.stderr b/tests/ui/generator/drop-tracking-error-body.stderr new file mode 100644 index 00000000000..28a6892336f --- /dev/null +++ b/tests/ui/generator/drop-tracking-error-body.stderr @@ -0,0 +1,17 @@ +error[E0004]: non-exhaustive patterns: type `bool` is non-empty + --> $DIR/drop-tracking-error-body.rs:6:11 + | +LL | match true {} + | ^^^^ + | + = note: the matched value is of type `bool` +help: ensure that all possible cases are being handled by adding a match arm with a wildcard pattern as shown + | +LL ~ match true { +LL + _ => todo!(), +LL ~ } + | + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0004`. diff --git a/tests/ui/generic-associated-types/equality-bound.stderr b/tests/ui/generic-associated-types/equality-bound.stderr index d78f7a7fbce..b21ff30a27d 100644 --- a/tests/ui/generic-associated-types/equality-bound.stderr +++ b/tests/ui/generic-associated-types/equality-bound.stderr @@ -36,7 +36,10 @@ error[E0433]: failed to resolve: use of undeclared type `I` --> $DIR/equality-bound.rs:9:41 | LL | fn sum3<J: Iterator>(i: J) -> i32 where I::Item = i32 { - | ^ use of undeclared type `I` + | ^ + | | + | use of undeclared type `I` + | help: a type parameter with a similar name exists: `J` error: aborting due to 4 previous errors diff --git a/tests/ui/impl-trait/issue-103181-1.stderr b/tests/ui/impl-trait/issue-103181-1.current.stderr index cd026607d52..e87a9d28ae1 100644 --- a/tests/ui/impl-trait/issue-103181-1.stderr +++ b/tests/ui/impl-trait/issue-103181-1.current.stderr @@ -1,5 +1,5 @@ error[E0046]: not all trait items implemented, missing: `Error` - --> $DIR/issue-103181-1.rs:9:5 + --> $DIR/issue-103181-1.rs:11:5 | LL | type Error; | ---------- `Error` from trait diff --git a/tests/ui/impl-trait/issue-103181-1.next.stderr b/tests/ui/impl-trait/issue-103181-1.next.stderr new file mode 100644 index 00000000000..e87a9d28ae1 --- /dev/null +++ b/tests/ui/impl-trait/issue-103181-1.next.stderr @@ -0,0 +1,12 @@ +error[E0046]: not all trait items implemented, missing: `Error` + --> $DIR/issue-103181-1.rs:11:5 + | +LL | type Error; + | ---------- `Error` from trait +LL | } +LL | impl HttpBody for () { + | ^^^^^^^^^^^^^^^^^^^^ missing `Error` in implementation + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0046`. diff --git a/tests/ui/impl-trait/issue-103181-1.rs b/tests/ui/impl-trait/issue-103181-1.rs index 197aedf9d98..5154abcd690 100644 --- a/tests/ui/impl-trait/issue-103181-1.rs +++ b/tests/ui/impl-trait/issue-103181-1.rs @@ -1,3 +1,5 @@ +// revisions: current next +//[next] compile-flags: -Ztrait-solver=next // edition:2021 mod hyper { diff --git a/tests/ui/macros/builtin-prelude-no-accidents.stderr b/tests/ui/macros/builtin-prelude-no-accidents.stderr index 56af618d484..8cd9a63b808 100644 --- a/tests/ui/macros/builtin-prelude-no-accidents.stderr +++ b/tests/ui/macros/builtin-prelude-no-accidents.stderr @@ -4,18 +4,21 @@ error[E0433]: failed to resolve: use of undeclared crate or module `env` LL | env::current_dir; | ^^^ use of undeclared crate or module `env` +error[E0433]: failed to resolve: use of undeclared crate or module `vec` + --> $DIR/builtin-prelude-no-accidents.rs:7:14 + | +LL | type B = vec::Vec<u8>; + | ^^^ + | | + | use of undeclared crate or module `vec` + | help: a struct with a similar name exists (notice the capitalization): `Vec` + error[E0433]: failed to resolve: use of undeclared crate or module `panic` --> $DIR/builtin-prelude-no-accidents.rs:6:14 | LL | type A = panic::PanicInfo; | ^^^^^ use of undeclared crate or module `panic` -error[E0433]: failed to resolve: use of undeclared crate or module `vec` - --> $DIR/builtin-prelude-no-accidents.rs:7:14 - | -LL | type B = vec::Vec<u8>; - | ^^^ use of undeclared crate or module `vec` - error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0433`. diff --git a/tests/ui/parser/dyn-trait-compatibility.stderr b/tests/ui/parser/dyn-trait-compatibility.stderr index 653be5b3b71..e34d855a9d4 100644 --- a/tests/ui/parser/dyn-trait-compatibility.stderr +++ b/tests/ui/parser/dyn-trait-compatibility.stderr @@ -1,9 +1,3 @@ -error[E0433]: failed to resolve: use of undeclared crate or module `dyn` - --> $DIR/dyn-trait-compatibility.rs:3:11 - | -LL | type A1 = dyn::dyn; - | ^^^ use of undeclared crate or module `dyn` - error[E0412]: cannot find type `dyn` in this scope --> $DIR/dyn-trait-compatibility.rs:1:11 | @@ -46,6 +40,12 @@ error[E0412]: cannot find type `dyn` in this scope LL | type A3 = dyn<<dyn as dyn>::dyn>; | ^^^ not found in this scope +error[E0433]: failed to resolve: use of undeclared crate or module `dyn` + --> $DIR/dyn-trait-compatibility.rs:3:11 + | +LL | type A1 = dyn::dyn; + | ^^^ use of undeclared crate or module `dyn` + error: aborting due to 8 previous errors Some errors have detailed explanations: E0405, E0412, E0433. diff --git a/tests/ui/parser/impl-on-unsized-typo.rs b/tests/ui/parser/impl-on-unsized-typo.rs new file mode 100644 index 00000000000..e09c0463045 --- /dev/null +++ b/tests/ui/parser/impl-on-unsized-typo.rs @@ -0,0 +1,6 @@ +trait Tr {} + +impl<T ?Sized> Tr for T {} +//~^ ERROR expected one of `,`, `:`, `=`, or `>`, found `?` + +fn main() {} diff --git a/tests/ui/parser/impl-on-unsized-typo.stderr b/tests/ui/parser/impl-on-unsized-typo.stderr new file mode 100644 index 00000000000..23dcc1efd68 --- /dev/null +++ b/tests/ui/parser/impl-on-unsized-typo.stderr @@ -0,0 +1,8 @@ +error: expected one of `,`, `:`, `=`, or `>`, found `?` + --> $DIR/impl-on-unsized-typo.rs:3:8 + | +LL | impl<T ?Sized> Tr for T {} + | ^ expected one of `,`, `:`, `=`, or `>` + +error: aborting due to previous error + diff --git a/tests/ui/parser/issues/issue-111416.rs b/tests/ui/parser/issues/issue-111416.rs new file mode 100644 index 00000000000..cfd1b6b99ba --- /dev/null +++ b/tests/ui/parser/issues/issue-111416.rs @@ -0,0 +1,3 @@ +fn main() { + let my = monad_bind(mx, T: Try); //~ ERROR invalid `struct` delimiters or `fn` call arguments +} diff --git a/tests/ui/parser/issues/issue-111416.stderr b/tests/ui/parser/issues/issue-111416.stderr new file mode 100644 index 00000000000..ddacf4d6dfc --- /dev/null +++ b/tests/ui/parser/issues/issue-111416.stderr @@ -0,0 +1,18 @@ +error: invalid `struct` delimiters or `fn` call arguments + --> $DIR/issue-111416.rs:2:14 + | +LL | let my = monad_bind(mx, T: Try); + | ^^^^^^^^^^^^^^^^^^^^^^ + | +help: if `monad_bind` is a struct, use braces as delimiters + | +LL | let my = monad_bind { mx, T: Try }; + | ~ ~ +help: if `monad_bind` is a function, use the arguments directly + | +LL - let my = monad_bind(mx, T: Try); +LL + let my = monad_bind(mx, Try); + | + +error: aborting due to previous error + diff --git a/tests/ui/pattern/pattern-error-continue.stderr b/tests/ui/pattern/pattern-error-continue.stderr index e1349fb02ea..10fcccb0301 100644 --- a/tests/ui/pattern/pattern-error-continue.stderr +++ b/tests/ui/pattern/pattern-error-continue.stderr @@ -1,9 +1,3 @@ -error[E0433]: failed to resolve: use of undeclared type `E` - --> $DIR/pattern-error-continue.rs:33:9 - | -LL | E::V => {} - | ^ use of undeclared type `E` - error[E0532]: expected tuple struct or tuple variant, found unit variant `A::D` --> $DIR/pattern-error-continue.rs:18:9 | @@ -56,6 +50,15 @@ note: function defined here LL | fn f(_c: char) {} | ^ -------- +error[E0433]: failed to resolve: use of undeclared type `E` + --> $DIR/pattern-error-continue.rs:33:9 + | +LL | E::V => {} + | ^ + | | + | use of undeclared type `E` + | help: an enum with a similar name exists: `A` + error: aborting due to 5 previous errors Some errors have detailed explanations: E0023, E0308, E0433, E0532. diff --git a/tests/ui/pattern/usefulness/consts-opaque.rs b/tests/ui/pattern/usefulness/consts-opaque.rs index ca4fcd85bb6..c10c6205a08 100644 --- a/tests/ui/pattern/usefulness/consts-opaque.rs +++ b/tests/ui/pattern/usefulness/consts-opaque.rs @@ -20,11 +20,12 @@ const BAR: Bar = Bar; #[derive(PartialEq)] enum Baz { Baz1, - Baz2 + Baz2, } impl Eq for Baz {} const BAZ: Baz = Baz::Baz1; +#[rustfmt::skip] fn main() { match FOO { FOO => {} @@ -124,8 +125,16 @@ fn main() { match WRAPQUUX { Wrap(_) => {} - WRAPQUUX => {} // detected unreachable because we do inspect the `Wrap` layer - //~^ ERROR unreachable pattern + WRAPQUUX => {} + } + + match WRAPQUUX { + Wrap(_) => {} + } + + match WRAPQUUX { + //~^ ERROR: non-exhaustive patterns: `Wrap(_)` not covered + WRAPQUUX => {} } #[derive(PartialEq, Eq)] @@ -138,8 +147,7 @@ fn main() { match WHOKNOWSQUUX { WHOKNOWSQUUX => {} WhoKnows::Yay(_) => {} - WHOKNOWSQUUX => {} // detected unreachable because we do inspect the `WhoKnows` layer - //~^ ERROR unreachable pattern + WHOKNOWSQUUX => {} WhoKnows::Nope => {} } } diff --git a/tests/ui/pattern/usefulness/consts-opaque.stderr b/tests/ui/pattern/usefulness/consts-opaque.stderr index 3f0b4a9f26a..e01b06ccc82 100644 --- a/tests/ui/pattern/usefulness/consts-opaque.stderr +++ b/tests/ui/pattern/usefulness/consts-opaque.stderr @@ -1,5 +1,5 @@ error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:30:9 + --> $DIR/consts-opaque.rs:31:9 | LL | FOO => {} | ^^^ @@ -8,7 +8,7 @@ LL | FOO => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:37:9 + --> $DIR/consts-opaque.rs:38:9 | LL | FOO_REF => {} | ^^^^^^^ @@ -17,7 +17,7 @@ LL | FOO_REF => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details warning: to use a constant of type `Foo` in a pattern, `Foo` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:45:9 + --> $DIR/consts-opaque.rs:46:9 | LL | FOO_REF_REF => {} | ^^^^^^^^^^^ @@ -29,7 +29,7 @@ LL | FOO_REF_REF => {} = note: `#[warn(indirect_structural_match)]` on by default error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:53:9 + --> $DIR/consts-opaque.rs:54:9 | LL | BAR => {} // should not be emitting unreachable warning | ^^^ @@ -38,7 +38,7 @@ LL | BAR => {} // should not be emitting unreachable warning = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:61:9 + --> $DIR/consts-opaque.rs:62:9 | LL | BAR => {} | ^^^ @@ -47,7 +47,7 @@ LL | BAR => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:70:9 + --> $DIR/consts-opaque.rs:71:9 | LL | BAR => {} | ^^^ @@ -56,7 +56,7 @@ LL | BAR => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Bar` in a pattern, `Bar` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:72:9 + --> $DIR/consts-opaque.rs:73:9 | LL | BAR => {} // should not be emitting unreachable warning | ^^^ @@ -65,7 +65,7 @@ LL | BAR => {} // should not be emitting unreachable warning = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:80:9 + --> $DIR/consts-opaque.rs:81:9 | LL | BAZ => {} | ^^^ @@ -74,7 +74,7 @@ LL | BAZ => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:90:9 + --> $DIR/consts-opaque.rs:91:9 | LL | BAZ => {} | ^^^ @@ -83,7 +83,7 @@ LL | BAZ => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: to use a constant of type `Baz` in a pattern, `Baz` must be annotated with `#[derive(PartialEq, Eq)]` - --> $DIR/consts-opaque.rs:97:9 + --> $DIR/consts-opaque.rs:98:9 | LL | BAZ => {} | ^^^ @@ -92,7 +92,7 @@ LL | BAZ => {} = note: see https://doc.rust-lang.org/stable/std/marker/trait.StructuralEq.html for details error: unreachable pattern - --> $DIR/consts-opaque.rs:32:9 + --> $DIR/consts-opaque.rs:33:9 | LL | FOO => {} | --- matches any value @@ -107,7 +107,7 @@ LL | #![deny(unreachable_patterns)] | ^^^^^^^^^^^^^^^^^^^^ error: unreachable pattern - --> $DIR/consts-opaque.rs:39:9 + --> $DIR/consts-opaque.rs:40:9 | LL | FOO_REF => {} | ------- matches any value @@ -116,7 +116,7 @@ LL | Foo(_) => {} // should not be emitting unreachable warning | ^^^^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:53:9 + --> $DIR/consts-opaque.rs:54:9 | LL | Bar => {} | --- matches any value @@ -124,7 +124,7 @@ LL | BAR => {} // should not be emitting unreachable warning | ^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:56:9 + --> $DIR/consts-opaque.rs:57:9 | LL | Bar => {} | --- matches any value @@ -133,7 +133,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:63:9 + --> $DIR/consts-opaque.rs:64:9 | LL | BAR => {} | --- matches any value @@ -142,7 +142,7 @@ LL | Bar => {} // should not be emitting unreachable warning | ^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:65:9 + --> $DIR/consts-opaque.rs:66:9 | LL | BAR => {} | --- matches any value @@ -151,7 +151,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:72:9 + --> $DIR/consts-opaque.rs:73:9 | LL | BAR => {} | --- matches any value @@ -160,7 +160,7 @@ LL | BAR => {} // should not be emitting unreachable warning | ^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:75:9 + --> $DIR/consts-opaque.rs:76:9 | LL | BAR => {} | --- matches any value @@ -169,7 +169,7 @@ LL | _ => {} // should not be emitting unreachable warning | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:82:9 + --> $DIR/consts-opaque.rs:83:9 | LL | BAZ => {} | --- matches any value @@ -178,7 +178,7 @@ LL | Baz::Baz1 => {} // should not be emitting unreachable warning | ^^^^^^^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:84:9 + --> $DIR/consts-opaque.rs:85:9 | LL | BAZ => {} | --- matches any value @@ -187,7 +187,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:92:9 + --> $DIR/consts-opaque.rs:93:9 | LL | BAZ => {} | --- matches any value @@ -196,7 +196,7 @@ LL | _ => {} | ^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:99:9 + --> $DIR/consts-opaque.rs:100:9 | LL | BAZ => {} | --- matches any value @@ -205,7 +205,7 @@ LL | Baz::Baz2 => {} // should not be emitting unreachable warning | ^^^^^^^^^ unreachable pattern error: unreachable pattern - --> $DIR/consts-opaque.rs:101:9 + --> $DIR/consts-opaque.rs:102:9 | LL | BAZ => {} | --- matches any value @@ -213,19 +213,24 @@ LL | BAZ => {} LL | _ => {} // should not be emitting unreachable warning | ^ unreachable pattern -error: unreachable pattern - --> $DIR/consts-opaque.rs:127:9 +error[E0004]: non-exhaustive patterns: `Wrap(_)` not covered + --> $DIR/consts-opaque.rs:135:11 | -LL | Wrap(_) => {} - | ------- matches any value -LL | WRAPQUUX => {} // detected unreachable because we do inspect the `Wrap` layer - | ^^^^^^^^ unreachable pattern - -error: unreachable pattern - --> $DIR/consts-opaque.rs:141:9 +LL | match WRAPQUUX { + | ^^^^^^^^ pattern `Wrap(_)` not covered + | +note: `Wrap<fn(usize, usize) -> usize>` defined here + --> $DIR/consts-opaque.rs:117:12 + | +LL | struct Wrap<T>(T); + | ^^^^ + = note: the matched value is of type `Wrap<fn(usize, usize) -> usize>` +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 ~ WRAPQUUX => {}, +LL + Wrap(_) => todo!() | -LL | WHOKNOWSQUUX => {} // detected unreachable because we do inspect the `WhoKnows` layer - | ^^^^^^^^^^^^ -error: aborting due to 24 previous errors; 1 warning emitted +error: aborting due to 23 previous errors; 1 warning emitted +For more information about this error, try `rustc --explain E0004`. diff --git a/tests/ui/resolve/issue-109250.rs b/tests/ui/resolve/issue-109250.rs new file mode 100644 index 00000000000..68e33f693ce --- /dev/null +++ b/tests/ui/resolve/issue-109250.rs @@ -0,0 +1,3 @@ +fn main() { //~ HELP consider importing + HashMap::new; //~ ERROR failed to resolve: use of undeclared type `HashMap` +} diff --git a/tests/ui/resolve/issue-109250.stderr b/tests/ui/resolve/issue-109250.stderr new file mode 100644 index 00000000000..d5b8c08ced7 --- /dev/null +++ b/tests/ui/resolve/issue-109250.stderr @@ -0,0 +1,14 @@ +error[E0433]: failed to resolve: use of undeclared type `HashMap` + --> $DIR/issue-109250.rs:2:5 + | +LL | HashMap::new; + | ^^^^^^^ use of undeclared type `HashMap` + | +help: consider importing this struct + | +LL + use std::collections::HashMap; + | + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0433`. diff --git a/tests/ui/resolve/issue-50599.rs b/tests/ui/resolve/issue-50599.rs index 72238a59198..00588735b9a 100644 --- a/tests/ui/resolve/issue-50599.rs +++ b/tests/ui/resolve/issue-50599.rs @@ -2,5 +2,4 @@ fn main() { const N: u32 = 1_000; const M: usize = (f64::from(N) * std::f64::LOG10_2) as usize; //~ ERROR cannot find value let mut digits = [0u32; M]; - //~^ constant } diff --git a/tests/ui/resolve/issue-50599.stderr b/tests/ui/resolve/issue-50599.stderr index d7419b64fac..d58b6ca5b5c 100644 --- a/tests/ui/resolve/issue-50599.stderr +++ b/tests/ui/resolve/issue-50599.stderr @@ -16,12 +16,6 @@ LL - const M: usize = (f64::from(N) * std::f64::LOG10_2) as usize; LL + const M: usize = (f64::from(N) * LOG10_2) as usize; | -note: erroneous constant used - --> $DIR/issue-50599.rs:4:29 - | -LL | let mut digits = [0u32; M]; - | ^ - error: aborting due to previous error For more information about this error, try `rustc --explain E0425`. diff --git a/tests/ui/resolve/resolve-variant-assoc-item.stderr b/tests/ui/resolve/resolve-variant-assoc-item.stderr index 4be1019968b..ed157197d17 100644 --- a/tests/ui/resolve/resolve-variant-assoc-item.stderr +++ b/tests/ui/resolve/resolve-variant-assoc-item.stderr @@ -3,12 +3,26 @@ error[E0433]: failed to resolve: `V` is a variant, not a module | LL | E::V::associated_item; | ^ `V` is a variant, not a module + | +help: there is an enum variant `E::V`; try using the variant's enum + | +LL | E; + | ~ error[E0433]: failed to resolve: `V` is a variant, not a module --> $DIR/resolve-variant-assoc-item.rs:6:5 | LL | V::associated_item; | ^ `V` is a variant, not a module + | +help: there is an enum variant `E::V`; try using the variant's enum + | +LL | E; + | ~ +help: an enum with a similar name exists + | +LL | E::associated_item; + | ~ error: aborting due to 2 previous errors diff --git a/tests/ui/traits/non_lifetime_binders/universe-error1.rs b/tests/ui/traits/non_lifetime_binders/universe-error1.rs new file mode 100644 index 00000000000..eadee6b711e --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/universe-error1.rs @@ -0,0 +1,18 @@ +#![feature(non_lifetime_binders)] +//~^ WARN the feature `non_lifetime_binders` is incomplete + +trait Other<U: ?Sized> {} + +impl<U: ?Sized> Other<U> for U {} + +#[rustfmt::skip] +fn foo<U: ?Sized>() +where + for<T> T: Other<U> {} + +fn bar() { + foo::<_>(); + //~^ ERROR the trait bound `T: Other<_>` is not satisfied +} + +fn main() {} diff --git a/tests/ui/traits/non_lifetime_binders/universe-error1.stderr b/tests/ui/traits/non_lifetime_binders/universe-error1.stderr new file mode 100644 index 00000000000..bfcad72e352 --- /dev/null +++ b/tests/ui/traits/non_lifetime_binders/universe-error1.stderr @@ -0,0 +1,27 @@ +warning: the feature `non_lifetime_binders` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/universe-error1.rs:1:12 + | +LL | #![feature(non_lifetime_binders)] + | ^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #108185 <https://github.com/rust-lang/rust/issues/108185> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0277]: the trait bound `T: Other<_>` is not satisfied + --> $DIR/universe-error1.rs:14:11 + | +LL | foo::<_>(); + | ^ the trait `Other<_>` is not implemented for `T` + | +note: required by a bound in `foo` + --> $DIR/universe-error1.rs:11:15 + | +LL | fn foo<U: ?Sized>() + | --- required by a bound in this function +LL | where +LL | for<T> T: Other<U> {} + | ^^^^^^^^ required by this bound in `foo` + +error: aborting due to previous error; 1 warning emitted + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/type/type-dependent-def-issue-49241.rs b/tests/ui/type/type-dependent-def-issue-49241.rs index caf5bade5c7..4b6bc6124db 100644 --- a/tests/ui/type/type-dependent-def-issue-49241.rs +++ b/tests/ui/type/type-dependent-def-issue-49241.rs @@ -2,5 +2,4 @@ fn main() { let v = vec![0]; const l: usize = v.count(); //~ ERROR attempt to use a non-constant value in a constant let s: [u32; l] = v.into_iter().collect(); - //~^ constant } diff --git a/tests/ui/type/type-dependent-def-issue-49241.stderr b/tests/ui/type/type-dependent-def-issue-49241.stderr index af16a6e8f84..64c7687f7a8 100644 --- a/tests/ui/type/type-dependent-def-issue-49241.stderr +++ b/tests/ui/type/type-dependent-def-issue-49241.stderr @@ -6,12 +6,6 @@ LL | const l: usize = v.count(); | | | help: consider using `let` instead of `const`: `let l` -note: erroneous constant used - --> $DIR/type-dependent-def-issue-49241.rs:4:18 - | -LL | let s: [u32; l] = v.into_iter().collect(); - | ^ - error: aborting due to previous error For more information about this error, try `rustc --explain E0435`. diff --git a/tests/ui/type/type-path-err-node-types.stderr b/tests/ui/type/type-path-err-node-types.stderr index 1aed1dbe4ba..8b12aa1a393 100644 --- a/tests/ui/type/type-path-err-node-types.stderr +++ b/tests/ui/type/type-path-err-node-types.stderr @@ -1,9 +1,3 @@ -error[E0433]: failed to resolve: use of undeclared type `NonExistent` - --> $DIR/type-path-err-node-types.rs:15:5 - | -LL | NonExistent::Assoc::<u8>; - | ^^^^^^^^^^^ use of undeclared type `NonExistent` - error[E0412]: cannot find type `Nonexistent` in this scope --> $DIR/type-path-err-node-types.rs:7:12 | @@ -22,6 +16,12 @@ error[E0425]: cannot find value `nonexistent` in this scope LL | nonexistent.nonexistent::<u8>(); | ^^^^^^^^^^^ not found in this scope +error[E0433]: failed to resolve: use of undeclared type `NonExistent` + --> $DIR/type-path-err-node-types.rs:15:5 + | +LL | NonExistent::Assoc::<u8>; + | ^^^^^^^^^^^ use of undeclared type `NonExistent` + error[E0282]: type annotations needed --> $DIR/type-path-err-node-types.rs:23:14 | diff --git a/tests/ui/weird-exprs.rs b/tests/ui/weird-exprs.rs index d65703ef5ca..c4fa850a4f9 100644 --- a/tests/ui/weird-exprs.rs +++ b/tests/ui/weird-exprs.rs @@ -5,13 +5,16 @@ #![allow(non_camel_case_types)] #![allow(dead_code)] +#![allow(redundant_semicolons)] #![allow(unreachable_code)] #![allow(unused_braces, unused_must_use, unused_parens)] #![allow(uncommon_codepoints, confusable_idents)] +#![allow(unused_imports)] #![allow(unreachable_patterns)] #![recursion_limit = "256"] +extern crate core; use std::cell::Cell; use std::mem::swap; @@ -204,6 +207,30 @@ fn closure_matching() { assert!(matches!(x(..), |_| Some(4))); } +fn semisemisemisemisemi() { + ;;;;;;; ;;;;;;; ;;; ;;; ;; + ;; ;; ;;;; ;;;; ;; + ;;;;;;; ;;;;; ;; ;;;; ;; ;; + ;; ;; ;; ;; ;; ;; + ;;;;;;; ;;;;;;; ;; ;; ;; +} + +fn useful_syntax() { + use {{std::{{collections::{{HashMap}}}}}}; + use ::{{{{core}, {std}}}}; + use {{::{{core as core2}}}}; +} + +fn infcx() { + pub mod cx { + pub mod cx { + pub use super::cx; + pub struct Cx; + } + } + let _cx: cx::cx::Cx = cx::cx::cx::cx::cx::Cx; +} + pub fn main() { strange(); funny(); @@ -227,4 +254,7 @@ pub fn main() { function(); bathroom_stall(); closure_matching(); + semisemisemisemisemi(); + useful_syntax(); + infcx(); } diff --git a/triagebot.toml b/triagebot.toml index 54c8b2060c5..a5152434d89 100644 --- a/triagebot.toml +++ b/triagebot.toml @@ -512,6 +512,7 @@ compiler-team = [ ] compiler-team-contributors = [ "@compiler-errors", + "@eholk", "@jackh726", "@TaKO8Ki", "@WaffleLapkin", @@ -532,6 +533,7 @@ bootstrap = [ "@Mark-Simulacrum", "@albertlarsan68", "@ozkanonur", + "@clubby789", ] infra-ci = [ "@Mark-Simulacrum", |