diff options
233 files changed, 3327 insertions, 1221 deletions
diff --git a/Cargo.lock b/Cargo.lock index 3495f4d51af..449f0c73588 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -4523,6 +4523,7 @@ dependencies = [ "rustc_index", "rustc_macros", "rustc_serialize", + "serde_json", "smallvec", "stable_deref_trait", "stacker", @@ -4826,6 +4827,7 @@ dependencies = [ "rustc_data_structures", "rustc_errors", "rustc_expand", + "rustc_fs_util", "rustc_hir", "rustc_hir_analysis", "rustc_hir_typeck", @@ -4950,6 +4952,7 @@ dependencies = [ "rustc_errors", "rustc_expand", "rustc_feature", + "rustc_fs_util", "rustc_hir", "rustc_hir_pretty", "rustc_index", @@ -5335,6 +5338,7 @@ dependencies = [ "rustc_abi", "rustc_data_structures", "rustc_feature", + "rustc_fs_util", "rustc_index", "rustc_macros", "rustc_serialize", diff --git a/compiler/rustc_borrowck/src/type_check/mod.rs b/compiler/rustc_borrowck/src/type_check/mod.rs index f67dae9beb9..c2a426bea09 100644 --- a/compiler/rustc_borrowck/src/type_check/mod.rs +++ b/compiler/rustc_borrowck/src/type_check/mod.rs @@ -2222,6 +2222,13 @@ impl<'a, 'tcx> TypeChecker<'a, 'tcx> { } } } + CastKind::Transmute => { + span_mirbug!( + self, + rvalue, + "Unexpected CastKind::Transmute, which is not permitted in Analysis MIR", + ); + } } } diff --git a/compiler/rustc_builtin_macros/src/cmdline_attrs.rs b/compiler/rustc_builtin_macros/src/cmdline_attrs.rs index db05c00d211..2b6fcc169be 100644 --- a/compiler/rustc_builtin_macros/src/cmdline_attrs.rs +++ b/compiler/rustc_builtin_macros/src/cmdline_attrs.rs @@ -6,7 +6,7 @@ use rustc_ast::{self as ast, AttrItem, AttrStyle}; use rustc_session::parse::ParseSess; use rustc_span::FileName; -pub fn inject(mut krate: ast::Crate, parse_sess: &ParseSess, attrs: &[String]) -> ast::Crate { +pub fn inject(krate: &mut ast::Crate, parse_sess: &ParseSess, attrs: &[String]) { for raw_attr in attrs { let mut parser = rustc_parse::new_parser_from_source_str( parse_sess, @@ -36,6 +36,4 @@ pub fn inject(mut krate: ast::Crate, parse_sess: &ParseSess, attrs: &[String]) - start_span.to(end_span), )); } - - krate } diff --git a/compiler/rustc_builtin_macros/src/proc_macro_harness.rs b/compiler/rustc_builtin_macros/src/proc_macro_harness.rs index a73fed6ccb2..378d5f39f4a 100644 --- a/compiler/rustc_builtin_macros/src/proc_macro_harness.rs +++ b/compiler/rustc_builtin_macros/src/proc_macro_harness.rs @@ -43,14 +43,14 @@ struct CollectProcMacros<'a> { } pub fn inject( + krate: &mut ast::Crate, sess: &Session, resolver: &mut dyn ResolverExpand, - mut krate: ast::Crate, is_proc_macro_crate: bool, has_proc_macro_decls: bool, is_test_crate: bool, handler: &rustc_errors::Handler, -) -> ast::Crate { +) { let ecfg = ExpansionConfig::default("proc_macro".to_string()); let mut cx = ExtCtxt::new(sess, ecfg, resolver, None); @@ -64,22 +64,20 @@ pub fn inject( }; if has_proc_macro_decls || is_proc_macro_crate { - visit::walk_crate(&mut collect, &krate); + visit::walk_crate(&mut collect, krate); } let macros = collect.macros; if !is_proc_macro_crate { - return krate; + return; } if is_test_crate { - return krate; + return; } let decls = mk_decls(&mut cx, ¯os); krate.items.push(decls); - - krate } impl<'a> CollectProcMacros<'a> { diff --git a/compiler/rustc_builtin_macros/src/standard_library_imports.rs b/compiler/rustc_builtin_macros/src/standard_library_imports.rs index caed40d9fa8..6493c6f13d5 100644 --- a/compiler/rustc_builtin_macros/src/standard_library_imports.rs +++ b/compiler/rustc_builtin_macros/src/standard_library_imports.rs @@ -9,17 +9,19 @@ use rustc_span::DUMMY_SP; use thin_vec::thin_vec; pub fn inject( - mut krate: ast::Crate, + krate: &mut ast::Crate, + pre_configured_attrs: &[ast::Attribute], resolver: &mut dyn ResolverExpand, sess: &Session, -) -> ast::Crate { +) -> usize { + let orig_num_items = krate.items.len(); let edition = sess.parse_sess.edition; // the first name in this list is the crate name of the crate with the prelude - let names: &[Symbol] = if attr::contains_name(&krate.attrs, sym::no_core) { - return krate; - } else if attr::contains_name(&krate.attrs, sym::no_std) { - if attr::contains_name(&krate.attrs, sym::compiler_builtins) { + let names: &[Symbol] = if attr::contains_name(pre_configured_attrs, sym::no_core) { + return 0; + } else if attr::contains_name(pre_configured_attrs, sym::no_std) { + if attr::contains_name(pre_configured_attrs, sym::compiler_builtins) { &[sym::core] } else { &[sym::core, sym::compiler_builtins] @@ -88,6 +90,5 @@ pub fn inject( ); krate.items.insert(0, use_item); - - krate + krate.items.len() - orig_num_items } diff --git a/compiler/rustc_builtin_macros/src/test_harness.rs b/compiler/rustc_builtin_macros/src/test_harness.rs index 2d491b2dac8..43ab6c04428 100644 --- a/compiler/rustc_builtin_macros/src/test_harness.rs +++ b/compiler/rustc_builtin_macros/src/test_harness.rs @@ -37,7 +37,7 @@ struct TestCtxt<'a> { /// Traverse the crate, collecting all the test functions, eliding any /// existing main functions, and synthesizing a main test harness -pub fn inject(sess: &Session, resolver: &mut dyn ResolverExpand, krate: &mut ast::Crate) { +pub fn inject(krate: &mut ast::Crate, sess: &Session, resolver: &mut dyn ResolverExpand) { let span_diagnostic = sess.diagnostic(); let panic_strategy = sess.panic_strategy(); let platform_panic_strategy = sess.target.panic_strategy; diff --git a/compiler/rustc_codegen_cranelift/src/base.rs b/compiler/rustc_codegen_cranelift/src/base.rs index 1b8e9312e2f..2107ae147e9 100644 --- a/compiler/rustc_codegen_cranelift/src/base.rs +++ b/compiler/rustc_codegen_cranelift/src/base.rs @@ -709,6 +709,10 @@ fn codegen_stmt<'tcx>( let operand = codegen_operand(fx, operand); operand.coerce_dyn_star(fx, lval); } + Rvalue::Cast(CastKind::Transmute, ref operand, _to_ty) => { + let operand = codegen_operand(fx, operand); + lval.write_cvalue_transmute(fx, operand); + } Rvalue::Discriminant(place) => { let place = codegen_place(fx, place); let value = place.to_cvalue(fx); diff --git a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs index fe48cac4faf..03f2a65fcca 100644 --- a/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs +++ b/compiler/rustc_codegen_cranelift/src/intrinsics/mod.rs @@ -557,16 +557,6 @@ fn codegen_regular_intrinsic_call<'tcx>( fx.bcx.ins().band(ptr, mask); } - sym::transmute => { - intrinsic_args!(fx, args => (from); intrinsic); - - if ret.layout().abi.is_uninhabited() { - crate::base::codegen_panic(fx, "Transmuting to uninhabited type.", source_info); - return; - } - - ret.write_cvalue_transmute(fx, from); - } sym::write_bytes | sym::volatile_set_memory => { intrinsic_args!(fx, args => (dst, val, count); intrinsic); let val = val.load_scalar(fx); diff --git a/compiler/rustc_codegen_llvm/src/back/archive.rs b/compiler/rustc_codegen_llvm/src/back/archive.rs index dd3268d7780..a570f2af0f0 100644 --- a/compiler/rustc_codegen_llvm/src/back/archive.rs +++ b/compiler/rustc_codegen_llvm/src/back/archive.rs @@ -189,6 +189,15 @@ impl ArchiveBuilderBuilder for LlvmArchiveBuilderBuilder { path.push(lib_name); path }; + // dlltool target architecture args from: + // https://github.com/llvm/llvm-project-release-prs/blob/llvmorg-15.0.6/llvm/lib/ToolDrivers/llvm-dlltool/DlltoolDriver.cpp#L69 + let (dlltool_target_arch, dlltool_target_bitness) = match sess.target.arch.as_ref() { + "x86_64" => ("i386:x86-64", "--64"), + "x86" => ("i386", "--32"), + "aarch64" => ("arm64", "--64"), + "arm" => ("arm", "--32"), + _ => panic!("unsupported arch {}", sess.target.arch), + }; let result = std::process::Command::new(dlltool) .args([ "-d", @@ -197,6 +206,10 @@ impl ArchiveBuilderBuilder for LlvmArchiveBuilderBuilder { lib_name, "-l", output_path.to_str().unwrap(), + "-m", + dlltool_target_arch, + "-f", + dlltool_target_bitness, "--no-leading-underscore", "--temp-prefix", temp_prefix.to_str().unwrap(), @@ -422,24 +435,22 @@ fn find_binutils_dlltool(sess: &Session) -> OsString { return dlltool_path.clone().into_os_string(); } - let mut tool_name: OsString = if sess.host.arch != sess.target.arch { - // We are cross-compiling, so we need the tool with the prefix matching our target - if sess.target.arch == "x86" { - "i686-w64-mingw32-dlltool" - } else { - "x86_64-w64-mingw32-dlltool" - } + let tool_name: OsString = if sess.host.options.is_like_windows { + // If we're compiling on Windows, always use "dlltool.exe". + "dlltool.exe" } else { - // We are not cross-compiling, so we just want `dlltool` - "dlltool" + // On other platforms, use the architecture-specific name. + match sess.target.arch.as_ref() { + "x86_64" => "x86_64-w64-mingw32-dlltool", + "x86" => "i686-w64-mingw32-dlltool", + "aarch64" => "aarch64-w64-mingw32-dlltool", + + // For non-standard architectures (e.g., aarch32) fallback to "dlltool". + _ => "dlltool", + } } .into(); - if sess.host.options.is_like_windows { - // If we're compiling on Windows, add the .exe suffix - tool_name.push(".exe"); - } - // NOTE: it's not clear how useful it is to explicitly search PATH. for dir in env::split_paths(&env::var_os("PATH").unwrap_or_default()) { let full_path = dir.join(&tool_name); diff --git a/compiler/rustc_codegen_llvm/src/intrinsic.rs b/compiler/rustc_codegen_llvm/src/intrinsic.rs index 9c921989ca9..012e25884ca 100644 --- a/compiler/rustc_codegen_llvm/src/intrinsic.rs +++ b/compiler/rustc_codegen_llvm/src/intrinsic.rs @@ -378,7 +378,7 @@ impl<'ll, 'tcx> IntrinsicCallMethods<'tcx> for Builder<'_, 'll, 'tcx> { } } - _ => bug!("unknown intrinsic '{}'", name), + _ => bug!("unknown intrinsic '{}' -- should it have been lowered earlier?", name), }; if !fn_abi.ret.is_ignore() { diff --git a/compiler/rustc_codegen_llvm/src/lib.rs b/compiler/rustc_codegen_llvm/src/lib.rs index 8dafe1b750b..e5bae009ed6 100644 --- a/compiler/rustc_codegen_llvm/src/lib.rs +++ b/compiler/rustc_codegen_llvm/src/lib.rs @@ -361,12 +361,12 @@ impl CodegenBackend for LlvmCodegenBackend { .expect("Expected LlvmCodegenBackend's OngoingCodegen, found Box<Any>") .join(sess); - sess.time("llvm_dump_timing_file", || { - if sess.opts.unstable_opts.llvm_time_trace { + if sess.opts.unstable_opts.llvm_time_trace { + sess.time("llvm_dump_timing_file", || { let file_name = outputs.with_extension("llvm_timings.json"); llvm_util::time_trace_profiler_finish(&file_name); - } - }); + }); + } Ok((codegen_results, work_products)) } diff --git a/compiler/rustc_codegen_ssa/src/back/linker.rs b/compiler/rustc_codegen_ssa/src/back/linker.rs index 23e2b272410..dd117681950 100644 --- a/compiler/rustc_codegen_ssa/src/back/linker.rs +++ b/compiler/rustc_codegen_ssa/src/back/linker.rs @@ -133,6 +133,9 @@ pub fn get_linker<'a>( LinkerFlavor::Unix(Cc::No) if sess.target.os == "l4re" => { Box::new(L4Bender::new(cmd, sess)) as Box<dyn Linker> } + LinkerFlavor::Unix(Cc::No) if sess.target.os == "aix" => { + Box::new(AixLinker::new(cmd, sess)) as Box<dyn Linker> + } LinkerFlavor::WasmLld(Cc::No) => Box::new(WasmLd::new(cmd, sess)) as Box<dyn Linker>, LinkerFlavor::Gnu(cc, _) | LinkerFlavor::Darwin(cc, _) @@ -1474,6 +1477,177 @@ impl<'a> L4Bender<'a> { } } +/// Linker for AIX. +pub struct AixLinker<'a> { + cmd: Command, + sess: &'a Session, + hinted_static: bool, +} + +impl<'a> AixLinker<'a> { + pub fn new(cmd: Command, sess: &'a Session) -> AixLinker<'a> { + AixLinker { cmd: cmd, sess: sess, hinted_static: false } + } + + fn hint_static(&mut self) { + if !self.hinted_static { + self.cmd.arg("-bstatic"); + self.hinted_static = true; + } + } + + fn hint_dynamic(&mut self) { + if self.hinted_static { + self.cmd.arg("-bdynamic"); + self.hinted_static = false; + } + } + + fn build_dylib(&mut self, _out_filename: &Path) { + self.cmd.arg("-bM:SRE"); + self.cmd.arg("-bnoentry"); + // FIXME: Use CreateExportList utility to create export list + // and remove -bexpfull. + self.cmd.arg("-bexpfull"); + } +} + +impl<'a> Linker for AixLinker<'a> { + fn link_dylib(&mut self, lib: &str, _verbatim: bool, _as_needed: bool) { + self.hint_dynamic(); + self.cmd.arg(format!("-l{}", lib)); + } + + fn link_staticlib(&mut self, lib: &str, _verbatim: bool) { + self.hint_static(); + self.cmd.arg(format!("-l{}", lib)); + } + + fn link_rlib(&mut self, lib: &Path) { + self.hint_static(); + self.cmd.arg(lib); + } + + fn include_path(&mut self, path: &Path) { + self.cmd.arg("-L").arg(path); + } + + fn framework_path(&mut self, _: &Path) { + bug!("frameworks are not supported on AIX"); + } + + fn output_filename(&mut self, path: &Path) { + self.cmd.arg("-o").arg(path); + } + + fn add_object(&mut self, path: &Path) { + self.cmd.arg(path); + } + + fn full_relro(&mut self) {} + + fn partial_relro(&mut self) {} + + fn no_relro(&mut self) {} + + fn cmd(&mut self) -> &mut Command { + &mut self.cmd + } + + fn set_output_kind(&mut self, output_kind: LinkOutputKind, out_filename: &Path) { + match output_kind { + LinkOutputKind::DynamicDylib => { + self.hint_dynamic(); + self.build_dylib(out_filename); + } + LinkOutputKind::StaticDylib => { + self.hint_static(); + self.build_dylib(out_filename); + } + _ => {} + } + } + + fn link_rust_dylib(&mut self, lib: &str, _: &Path) { + self.hint_dynamic(); + self.cmd.arg(format!("-l{}", lib)); + } + + fn link_framework(&mut self, _framework: &str, _as_needed: bool) { + bug!("frameworks not supported on AIX"); + } + + fn link_whole_staticlib(&mut self, lib: &str, verbatim: bool, search_path: &[PathBuf]) { + self.hint_static(); + let lib = find_native_static_library(lib, verbatim, search_path, &self.sess); + self.cmd.arg(format!("-bkeepfile:{}", lib.to_str().unwrap())); + } + + fn link_whole_rlib(&mut self, lib: &Path) { + self.hint_static(); + self.cmd.arg(format!("-bkeepfile:{}", lib.to_str().unwrap())); + } + + fn gc_sections(&mut self, _keep_metadata: bool) { + self.cmd.arg("-bgc"); + } + + fn no_gc_sections(&mut self) { + self.cmd.arg("-bnogc"); + } + + fn optimize(&mut self) {} + + fn pgo_gen(&mut self) {} + + fn control_flow_guard(&mut self) {} + + fn debuginfo(&mut self, strip: Strip, _: &[PathBuf]) { + match strip { + Strip::None => {} + // FIXME: -s strips the symbol table, line number information + // and relocation information. + Strip::Debuginfo | Strip::Symbols => { + self.cmd.arg("-s"); + } + } + } + + fn no_crt_objects(&mut self) {} + + fn no_default_libraries(&mut self) {} + + fn export_symbols(&mut self, tmpdir: &Path, _crate_type: CrateType, symbols: &[String]) { + let path = tmpdir.join("list.exp"); + let res: io::Result<()> = try { + let mut f = BufWriter::new(File::create(&path)?); + // TODO: use llvm-nm to generate export list. + for symbol in symbols { + debug!(" _{}", symbol); + writeln!(f, " {}", symbol)?; + } + }; + if let Err(e) = res { + self.sess.fatal(&format!("failed to write export file: {}", e)); + } + self.cmd.arg(format!("-bE:{}", path.to_str().unwrap())); + } + + fn subsystem(&mut self, _subsystem: &str) {} + + fn reset_per_library_state(&mut self) { + self.hint_dynamic(); + } + + fn linker_plugin_lto(&mut self) {} + + fn add_eh_frame_header(&mut self) {} + + fn add_no_exec(&mut self) {} + + fn add_as_needed(&mut self) {} +} + fn for_each_exported_symbols_include_dep<'tcx>( tcx: TyCtxt<'tcx>, crate_type: CrateType, diff --git a/compiler/rustc_codegen_ssa/src/base.rs b/compiler/rustc_codegen_ssa/src/base.rs index 4d34b3da5f5..c3c8649dbff 100644 --- a/compiler/rustc_codegen_ssa/src/base.rs +++ b/compiler/rustc_codegen_ssa/src/base.rs @@ -786,6 +786,7 @@ pub fn codegen_crate<B: ExtraBackendMethods>( total_codegen_time, start_rss.unwrap(), end_rss, + tcx.sess.opts.unstable_opts.time_passes_format, ); } diff --git a/compiler/rustc_codegen_ssa/src/mir/block.rs b/compiler/rustc_codegen_ssa/src/mir/block.rs index de1e00bd7a3..5da0e826c56 100644 --- a/compiler/rustc_codegen_ssa/src/mir/block.rs +++ b/compiler/rustc_codegen_ssa/src/mir/block.rs @@ -16,7 +16,7 @@ use rustc_index::vec::Idx; use rustc_middle::mir::{self, AssertKind, SwitchTargets}; use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf, ValidityRequirement}; use rustc_middle::ty::print::{with_no_trimmed_paths, with_no_visible_paths}; -use rustc_middle::ty::{self, Instance, Ty, TypeVisitableExt}; +use rustc_middle::ty::{self, Instance, Ty}; use rustc_session::config::OptLevel; use rustc_span::source_map::Span; use rustc_span::{sym, Symbol}; @@ -769,23 +769,6 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { None => bx.fn_abi_of_fn_ptr(sig, extra_args), }; - if intrinsic == Some(sym::transmute) { - return if let Some(target) = target { - self.codegen_transmute(bx, &args[0], destination); - helper.funclet_br(self, bx, target, mergeable_succ) - } else { - // If we are trying to transmute to an uninhabited type, - // it is likely there is no allotted destination. In fact, - // transmuting to an uninhabited type is UB, which means - // we can do what we like. Here, we declare that transmuting - // into an uninhabited type is impossible, so anything following - // it must be unreachable. - assert_eq!(fn_abi.ret.layout.abi, abi::Abi::Uninhabited); - bx.unreachable(); - MergingSucc::False - }; - } - if let Some(merging_succ) = self.codegen_panic_intrinsic( &helper, bx, @@ -828,7 +811,6 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { match intrinsic { None | Some(sym::drop_in_place) => {} - Some(sym::copy_nonoverlapping) => unreachable!(), Some(intrinsic) => { let dest = match ret_dest { _ if fn_abi.ret.is_indirect() => llargs[0], @@ -1739,71 +1721,6 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { } } - fn codegen_transmute(&mut self, bx: &mut Bx, src: &mir::Operand<'tcx>, dst: mir::Place<'tcx>) { - if let Some(index) = dst.as_local() { - match self.locals[index] { - LocalRef::Place(place) => self.codegen_transmute_into(bx, src, place), - LocalRef::UnsizedPlace(_) => bug!("transmute must not involve unsized locals"), - LocalRef::Operand(None) => { - let dst_layout = bx.layout_of(self.monomorphized_place_ty(dst.as_ref())); - assert!(!dst_layout.ty.has_erasable_regions()); - let place = PlaceRef::alloca(bx, dst_layout); - place.storage_live(bx); - self.codegen_transmute_into(bx, src, place); - let op = bx.load_operand(place); - place.storage_dead(bx); - self.locals[index] = LocalRef::Operand(Some(op)); - self.debug_introduce_local(bx, index); - } - LocalRef::Operand(Some(op)) => { - assert!(op.layout.is_zst(), "assigning to initialized SSAtemp"); - } - } - } else { - let dst = self.codegen_place(bx, dst.as_ref()); - self.codegen_transmute_into(bx, src, dst); - } - } - - fn codegen_transmute_into( - &mut self, - bx: &mut Bx, - src: &mir::Operand<'tcx>, - dst: PlaceRef<'tcx, Bx::Value>, - ) { - let src = self.codegen_operand(bx, src); - - // Special-case transmutes between scalars as simple bitcasts. - match (src.layout.abi, dst.layout.abi) { - (abi::Abi::Scalar(src_scalar), abi::Abi::Scalar(dst_scalar)) => { - // HACK(eddyb) LLVM doesn't like `bitcast`s between pointers and non-pointers. - let src_is_ptr = matches!(src_scalar.primitive(), abi::Pointer(_)); - let dst_is_ptr = matches!(dst_scalar.primitive(), abi::Pointer(_)); - if src_is_ptr == dst_is_ptr { - assert_eq!(src.layout.size, dst.layout.size); - - // NOTE(eddyb) the `from_immediate` and `to_immediate_scalar` - // conversions allow handling `bool`s the same as `u8`s. - let src = bx.from_immediate(src.immediate()); - // LLVM also doesn't like `bitcast`s between pointers in different address spaces. - let src_as_dst = if src_is_ptr { - bx.pointercast(src, bx.backend_type(dst.layout)) - } else { - bx.bitcast(src, bx.backend_type(dst.layout)) - }; - Immediate(bx.to_immediate_scalar(src_as_dst, dst_scalar)).store(bx, dst); - return; - } - } - _ => {} - } - - let llty = bx.backend_type(src.layout); - let cast_ptr = bx.pointercast(dst.llval, bx.type_ptr_to(llty)); - let align = src.layout.align.abi.min(dst.align); - src.val.store(bx, PlaceRef::new_sized_aligned(cast_ptr, src.layout, align)); - } - // Stores the return value of a function call into it's final location. fn store_return( &mut self, diff --git a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs index 13c4fa132d8..72d41d8c32c 100644 --- a/compiler/rustc_codegen_ssa/src/mir/rvalue.rs +++ b/compiler/rustc_codegen_ssa/src/mir/rvalue.rs @@ -13,7 +13,7 @@ use rustc_middle::ty::cast::{CastTy, IntTy}; use rustc_middle::ty::layout::{HasTyCtxt, LayoutOf}; use rustc_middle::ty::{self, adjustment::PointerCast, Instance, Ty, TyCtxt}; use rustc_span::source_map::{Span, DUMMY_SP}; -use rustc_target::abi::VariantIdx; +use rustc_target::abi::{self, VariantIdx}; impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { #[instrument(level = "trace", skip(self, bx))] @@ -72,6 +72,11 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { } } + mir::Rvalue::Cast(mir::CastKind::Transmute, ref operand, _ty) => { + let src = self.codegen_operand(bx, operand); + self.codegen_transmute(bx, src, dest); + } + mir::Rvalue::Repeat(ref elem, count) => { let cg_elem = self.codegen_operand(bx, elem); @@ -143,6 +148,52 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { } } + fn codegen_transmute( + &mut self, + bx: &mut Bx, + src: OperandRef<'tcx, Bx::Value>, + dst: PlaceRef<'tcx, Bx::Value>, + ) { + // The MIR validator enforces no unsized transmutes. + debug_assert!(src.layout.is_sized()); + debug_assert!(dst.layout.is_sized()); + + if src.layout.size != dst.layout.size + || src.layout.abi == abi::Abi::Uninhabited + || dst.layout.abi == abi::Abi::Uninhabited + { + // In all of these cases it's UB to run this transmute, but that's + // known statically so might as well trap for it, rather than just + // making it unreachable. + bx.abort(); + return; + } + + let size_in_bytes = src.layout.size.bytes(); + if size_in_bytes == 0 { + // Nothing to write + return; + } + + match src.val { + OperandValue::Ref(src_llval, meta, src_align) => { + debug_assert_eq!(meta, None); + // For a place-to-place transmute, call `memcpy` directly so that + // both arguments get the best-available alignment information. + let bytes = bx.cx().const_usize(size_in_bytes); + let flags = MemFlags::empty(); + bx.memcpy(dst.llval, dst.align, src_llval, src_align, bytes, flags); + } + OperandValue::Immediate(_) | OperandValue::Pair(_, _) => { + // When we have immediate(s), the alignment of the source is irrelevant, + // so we can store them using the destination's alignment. + let llty = bx.backend_type(src.layout); + let cast_ptr = bx.pointercast(dst.llval, bx.type_ptr_to(llty)); + src.val.store(bx, PlaceRef::new_sized_aligned(cast_ptr, src.layout, dst.align)); + } + } + } + pub fn codegen_rvalue_unsized( &mut self, bx: &mut Bx, @@ -344,6 +395,9 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { }; OperandValue::Immediate(newval) } + mir::CastKind::Transmute => { + bug!("Transmute operand {:?} in `codegen_rvalue_operand`", operand); + } }; OperandRef { val, layout: cast } } @@ -673,6 +727,10 @@ impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { impl<'a, 'tcx, Bx: BuilderMethods<'a, 'tcx>> FunctionCx<'a, 'tcx, Bx> { pub fn rvalue_creates_operand(&self, rvalue: &mir::Rvalue<'tcx>, span: Span) -> bool { match *rvalue { + mir::Rvalue::Cast(mir::CastKind::Transmute, ..) => + // FIXME: Now that transmute is an Rvalue, it would be nice if + // it could create `Immediate`s for scalars, where possible. + false, mir::Rvalue::Ref(..) | mir::Rvalue::CopyForDeref(..) | mir::Rvalue::AddressOf(..) | diff --git a/compiler/rustc_const_eval/src/interpret/cast.rs b/compiler/rustc_const_eval/src/interpret/cast.rs index c14152a916a..163e3f86993 100644 --- a/compiler/rustc_const_eval/src/interpret/cast.rs +++ b/compiler/rustc_const_eval/src/interpret/cast.rs @@ -133,6 +133,22 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { bug!() } } + + Transmute => { + assert!(src.layout.is_sized()); + assert!(dest.layout.is_sized()); + if src.layout.size != dest.layout.size { + throw_ub_format!( + "transmuting from {}-byte type to {}-byte type: `{}` -> `{}`", + src.layout.size.bytes(), + dest.layout.size.bytes(), + src.layout.ty, + dest.layout.ty, + ); + } + + self.copy_op(src, dest, /*allow_transmute*/ true)?; + } } Ok(()) } diff --git a/compiler/rustc_const_eval/src/interpret/intrinsics.rs b/compiler/rustc_const_eval/src/interpret/intrinsics.rs index a29cdade023..26fb041b455 100644 --- a/compiler/rustc_const_eval/src/interpret/intrinsics.rs +++ b/compiler/rustc_const_eval/src/interpret/intrinsics.rs @@ -127,7 +127,6 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { // First handle intrinsics without return place. let ret = match ret { None => match intrinsic_name { - sym::transmute => throw_ub_format!("transmuting to uninhabited type"), sym::abort => M::abort(self, "the program aborted execution".to_owned())?, // Unsupported diverging intrinsic. _ => return Ok(false), @@ -411,9 +410,6 @@ impl<'mir, 'tcx: 'mir, M: Machine<'mir, 'tcx>> InterpCx<'mir, 'tcx, M> { self.exact_div(&val, &size, dest)?; } - sym::transmute => { - self.copy_op(&args[0], dest, /*allow_transmute*/ true)?; - } sym::assert_inhabited | sym::assert_zero_valid | sym::assert_mem_uninitialized_valid => { diff --git a/compiler/rustc_const_eval/src/transform/validate.rs b/compiler/rustc_const_eval/src/transform/validate.rs index e0939d1d1ba..66fc1c07e20 100644 --- a/compiler/rustc_const_eval/src/transform/validate.rs +++ b/compiler/rustc_const_eval/src/transform/validate.rs @@ -621,6 +621,33 @@ impl<'a, 'tcx> Visitor<'tcx> for TypeChecker<'a, 'tcx> { ); } } + CastKind::Transmute => { + if let MirPhase::Runtime(..) = self.mir_phase { + // Unlike `mem::transmute`, a MIR `Transmute` is well-formed + // for any two `Sized` types, just potentially UB to run. + + if !op_ty.is_sized(self.tcx, self.param_env) { + self.fail( + location, + format!("Cannot transmute from non-`Sized` type {op_ty:?}"), + ); + } + if !target_type.is_sized(self.tcx, self.param_env) { + self.fail( + location, + format!("Cannot transmute to non-`Sized` type {target_type:?}"), + ); + } + } else { + self.fail( + location, + format!( + "Transmute is not supported in non-runtime phase {:?}.", + self.mir_phase + ), + ); + } + } } } Rvalue::Repeat(_, _) diff --git a/compiler/rustc_data_structures/Cargo.toml b/compiler/rustc_data_structures/Cargo.toml index 24cf9812a25..056ee1f63be 100644 --- a/compiler/rustc_data_structures/Cargo.toml +++ b/compiler/rustc_data_structures/Cargo.toml @@ -21,6 +21,7 @@ rustc-hash = "1.1.0" rustc_index = { path = "../rustc_index", package = "rustc_index" } rustc_macros = { path = "../rustc_macros" } rustc_serialize = { path = "../rustc_serialize" } +serde_json = "1.0.59" smallvec = { version = "1.8.1", features = [ "const_generics", "union", diff --git a/compiler/rustc_data_structures/src/graph/scc/tests.rs b/compiler/rustc_data_structures/src/graph/scc/tests.rs index 820a70fc8e4..513df666d0d 100644 --- a/compiler/rustc_data_structures/src/graph/scc/tests.rs +++ b/compiler/rustc_data_structures/src/graph/scc/tests.rs @@ -56,7 +56,7 @@ fn test_three_sccs() { assert_eq!(sccs.scc(1), 0); assert_eq!(sccs.scc(2), 0); assert_eq!(sccs.scc(3), 2); - assert_eq!(sccs.successors(0), &[]); + assert_eq!(sccs.successors(0), &[] as &[usize]); assert_eq!(sccs.successors(1), &[0]); assert_eq!(sccs.successors(2), &[0]); } @@ -113,7 +113,7 @@ fn test_find_state_2() { assert_eq!(sccs.scc(2), 0); assert_eq!(sccs.scc(3), 0); assert_eq!(sccs.scc(4), 0); - assert_eq!(sccs.successors(0), &[]); + assert_eq!(sccs.successors(0), &[] as &[usize]); } #[test] @@ -138,7 +138,7 @@ fn test_find_state_3() { assert_eq!(sccs.scc(3), 0); assert_eq!(sccs.scc(4), 0); assert_eq!(sccs.scc(5), 1); - assert_eq!(sccs.successors(0), &[]); + assert_eq!(sccs.successors(0), &[] as &[usize]); assert_eq!(sccs.successors(1), &[0]); } diff --git a/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs b/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs index c8f97926717..7c866da6009 100644 --- a/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs +++ b/compiler/rustc_data_structures/src/graph/vec_graph/tests.rs @@ -27,11 +27,11 @@ fn successors() { let graph = create_graph(); assert_eq!(graph.successors(0), &[1]); assert_eq!(graph.successors(1), &[2, 3]); - assert_eq!(graph.successors(2), &[]); + assert_eq!(graph.successors(2), &[] as &[usize]); assert_eq!(graph.successors(3), &[4]); - assert_eq!(graph.successors(4), &[]); + assert_eq!(graph.successors(4), &[] as &[usize]); assert_eq!(graph.successors(5), &[1]); - assert_eq!(graph.successors(6), &[]); + assert_eq!(graph.successors(6), &[] as &[usize]); } #[test] diff --git a/compiler/rustc_data_structures/src/profiling.rs b/compiler/rustc_data_structures/src/profiling.rs index 3d9c7f6eae2..58a0609e296 100644 --- a/compiler/rustc_data_structures/src/profiling.rs +++ b/compiler/rustc_data_structures/src/profiling.rs @@ -97,6 +97,7 @@ use std::time::{Duration, Instant}; pub use measureme::EventId; use measureme::{EventIdBuilder, Profiler, SerializableString, StringId}; use parking_lot::RwLock; +use serde_json::json; use smallvec::SmallVec; bitflags::bitflags! { @@ -145,6 +146,15 @@ const EVENT_FILTERS_BY_NAME: &[(&str, EventFilter)] = &[ /// Something that uniquely identifies a query invocation. pub struct QueryInvocationId(pub u32); +/// Which format to use for `-Z time-passes` +#[derive(Clone, Copy, PartialEq, Hash, Debug)] +pub enum TimePassesFormat { + /// Emit human readable text + Text, + /// Emit structured JSON + Json, +} + /// A reference to the SelfProfiler. It can be cloned and sent across thread /// boundaries at will. #[derive(Clone)] @@ -158,14 +168,14 @@ pub struct SelfProfilerRef { // actually enabled. event_filter_mask: EventFilter, - // Print verbose generic activities to stderr? - print_verbose_generic_activities: bool, + // Print verbose generic activities to stderr. + print_verbose_generic_activities: Option<TimePassesFormat>, } impl SelfProfilerRef { pub fn new( profiler: Option<Arc<SelfProfiler>>, - print_verbose_generic_activities: bool, + print_verbose_generic_activities: Option<TimePassesFormat>, ) -> SelfProfilerRef { // If there is no SelfProfiler then the filter mask is set to NONE, // ensuring that nothing ever tries to actually access it. @@ -207,9 +217,10 @@ impl SelfProfilerRef { /// a measureme event, "verbose" generic activities also print a timing entry to /// stderr if the compiler is invoked with -Ztime-passes. pub fn verbose_generic_activity(&self, event_label: &'static str) -> VerboseTimingGuard<'_> { - let message = self.print_verbose_generic_activities.then(|| event_label.to_owned()); + let message_and_format = + self.print_verbose_generic_activities.map(|format| (event_label.to_owned(), format)); - VerboseTimingGuard::start(message, self.generic_activity(event_label)) + VerboseTimingGuard::start(message_and_format, self.generic_activity(event_label)) } /// Like `verbose_generic_activity`, but with an extra arg. @@ -221,11 +232,14 @@ impl SelfProfilerRef { where A: Borrow<str> + Into<String>, { - let message = self + let message_and_format = self .print_verbose_generic_activities - .then(|| format!("{}({})", event_label, event_arg.borrow())); + .map(|format| (format!("{}({})", event_label, event_arg.borrow()), format)); - VerboseTimingGuard::start(message, self.generic_activity_with_arg(event_label, event_arg)) + VerboseTimingGuard::start( + message_and_format, + self.generic_activity_with_arg(event_label, event_arg), + ) } /// Start profiling a generic activity. Profiling continues until the @@ -703,17 +717,32 @@ impl<'a> TimingGuard<'a> { } } +struct VerboseInfo { + start_time: Instant, + start_rss: Option<usize>, + message: String, + format: TimePassesFormat, +} + #[must_use] pub struct VerboseTimingGuard<'a> { - start_and_message: Option<(Instant, Option<usize>, String)>, + info: Option<VerboseInfo>, _guard: TimingGuard<'a>, } impl<'a> VerboseTimingGuard<'a> { - pub fn start(message: Option<String>, _guard: TimingGuard<'a>) -> Self { + pub fn start( + message_and_format: Option<(String, TimePassesFormat)>, + _guard: TimingGuard<'a>, + ) -> Self { VerboseTimingGuard { _guard, - start_and_message: message.map(|msg| (Instant::now(), get_resident_set_size(), msg)), + info: message_and_format.map(|(message, format)| VerboseInfo { + start_time: Instant::now(), + start_rss: get_resident_set_size(), + message, + format, + }), } } @@ -726,10 +755,10 @@ impl<'a> VerboseTimingGuard<'a> { impl Drop for VerboseTimingGuard<'_> { fn drop(&mut self) { - if let Some((start_time, start_rss, ref message)) = self.start_and_message { + if let Some(info) = &self.info { let end_rss = get_resident_set_size(); - let dur = start_time.elapsed(); - print_time_passes_entry(message, dur, start_rss, end_rss); + let dur = info.start_time.elapsed(); + print_time_passes_entry(&info.message, dur, info.start_rss, end_rss, info.format); } } } @@ -739,7 +768,22 @@ pub fn print_time_passes_entry( dur: Duration, start_rss: Option<usize>, end_rss: Option<usize>, + format: TimePassesFormat, ) { + match format { + TimePassesFormat::Json => { + let json = json!({ + "pass": what, + "time": dur.as_secs_f64(), + "rss_start": start_rss, + "rss_end": end_rss, + }); + eprintln!("time: {}", json.to_string()); + return; + } + TimePassesFormat::Text => (), + } + // Print the pass if its duration is greater than 5 ms, or it changed the // measured RSS. let is_notable = || { diff --git a/compiler/rustc_driver_impl/src/lib.rs b/compiler/rustc_driver_impl/src/lib.rs index 8634c644176..1e835f6065a 100644 --- a/compiler/rustc_driver_impl/src/lib.rs +++ b/compiler/rustc_driver_impl/src/lib.rs @@ -20,7 +20,9 @@ pub extern crate rustc_plugin_impl as plugin; use rustc_ast as ast; use rustc_codegen_ssa::{traits::CodegenBackend, CodegenErrors, CodegenResults}; -use rustc_data_structures::profiling::{get_resident_set_size, print_time_passes_entry}; +use rustc_data_structures::profiling::{ + get_resident_set_size, print_time_passes_entry, TimePassesFormat, +}; use rustc_data_structures::sync::SeqCst; use rustc_errors::registry::{InvalidErrorCode, Registry}; use rustc_errors::{ @@ -161,7 +163,7 @@ pub trait Callbacks { #[derive(Default)] pub struct TimePassesCallbacks { - time_passes: bool, + time_passes: Option<TimePassesFormat>, } impl Callbacks for TimePassesCallbacks { @@ -171,7 +173,8 @@ impl Callbacks for TimePassesCallbacks { // If a --print=... option has been given, we don't print the "total" // time because it will mess up the --print output. See #64339. // - self.time_passes = config.opts.prints.is_empty() && config.opts.unstable_opts.time_passes; + self.time_passes = (config.opts.prints.is_empty() && config.opts.unstable_opts.time_passes) + .then(|| config.opts.unstable_opts.time_passes_format); config.opts.trimmed_def_paths = TrimmedDefPaths::GoodPath; } } @@ -353,7 +356,7 @@ fn run_compiler( { let plugins = queries.register_plugins()?; - let (_, lint_store) = &*plugins.borrow(); + let (.., lint_store) = &*plugins.borrow(); // Lint plugins are registered; now we can process command line flags. if sess.opts.describe_lints { @@ -1354,9 +1357,9 @@ pub fn main() -> ! { RunCompiler::new(&args, &mut callbacks).run() }); - if callbacks.time_passes { + if let Some(format) = callbacks.time_passes { let end_rss = get_resident_set_size(); - print_time_passes_entry("total", start_time.elapsed(), start_rss, end_rss); + print_time_passes_entry("total", start_time.elapsed(), start_rss, end_rss, format); } process::exit(exit_code) diff --git a/compiler/rustc_expand/src/base.rs b/compiler/rustc_expand/src/base.rs index 6eb0d24eb97..d32af10914e 100644 --- a/compiler/rustc_expand/src/base.rs +++ b/compiler/rustc_expand/src/base.rs @@ -1002,6 +1002,7 @@ pub struct ExpansionData { pub struct ExtCtxt<'a> { pub sess: &'a Session, pub ecfg: expand::ExpansionConfig<'a>, + pub num_standard_library_imports: usize, pub reduced_recursion_limit: Option<Limit>, pub root_path: PathBuf, pub resolver: &'a mut dyn ResolverExpand, @@ -1030,6 +1031,7 @@ impl<'a> ExtCtxt<'a> { ExtCtxt { sess, ecfg, + num_standard_library_imports: 0, reduced_recursion_limit: None, resolver, lint_store, diff --git a/compiler/rustc_expand/src/config.rs b/compiler/rustc_expand/src/config.rs index d6cb173ba9b..a78dc0678d5 100644 --- a/compiler/rustc_expand/src/config.rs +++ b/compiler/rustc_expand/src/config.rs @@ -24,7 +24,6 @@ use rustc_session::Session; use rustc_span::edition::{Edition, ALL_EDITIONS}; use rustc_span::symbol::{sym, Symbol}; use rustc_span::{Span, DUMMY_SP}; -use thin_vec::ThinVec; /// A folder that strips out items that do not belong in the current configuration. pub struct StripUnconfigured<'a> { @@ -37,7 +36,7 @@ pub struct StripUnconfigured<'a> { pub lint_node_id: NodeId, } -fn get_features(sess: &Session, krate_attrs: &[ast::Attribute]) -> Features { +pub fn features(sess: &Session, krate_attrs: &[Attribute]) -> Features { fn feature_removed(sess: &Session, span: Span, reason: Option<&str>) { sess.emit_err(FeatureRemoved { span, @@ -191,39 +190,16 @@ fn get_features(sess: &Session, krate_attrs: &[ast::Attribute]) -> Features { features } -/// `cfg_attr`-process the crate's attributes and compute the crate's features. -pub fn features( - sess: &Session, - mut krate: ast::Crate, - lint_node_id: NodeId, -) -> (ast::Crate, Features) { - let mut strip_unconfigured = - StripUnconfigured { sess, features: None, config_tokens: false, lint_node_id }; - - let unconfigured_attrs = krate.attrs.clone(); - let diag = &sess.parse_sess.span_diagnostic; - let err_count = diag.err_count(); - let features = match strip_unconfigured.configure_krate_attrs(krate.attrs) { - None => { - // The entire crate is unconfigured. - krate.attrs = ast::AttrVec::new(); - krate.items = ThinVec::new(); - Features::default() - } - Some(attrs) => { - krate.attrs = attrs; - let features = get_features(sess, &krate.attrs); - if err_count == diag.err_count() { - // Avoid reconfiguring malformed `cfg_attr`s. - strip_unconfigured.features = Some(&features); - // Run configuration again, this time with features available - // so that we can perform feature-gating. - strip_unconfigured.configure_krate_attrs(unconfigured_attrs); - } - features - } +pub fn pre_configure_attrs(sess: &Session, attrs: &[Attribute]) -> ast::AttrVec { + let strip_unconfigured = StripUnconfigured { + sess, + features: None, + config_tokens: false, + lint_node_id: ast::CRATE_NODE_ID, }; - (krate, features) + let attrs: ast::AttrVec = + attrs.iter().flat_map(|attr| strip_unconfigured.process_cfg_attr(attr)).collect(); + if strip_unconfigured.in_cfg(&attrs) { attrs } else { ast::AttrVec::new() } } #[macro_export] @@ -254,11 +230,6 @@ impl<'a> StripUnconfigured<'a> { } } - fn configure_krate_attrs(&self, mut attrs: ast::AttrVec) -> Option<ast::AttrVec> { - attrs.flat_map_in_place(|attr| self.process_cfg_attr(attr)); - self.in_cfg(&attrs).then_some(attrs) - } - /// Performs cfg-expansion on `stream`, producing a new `AttrTokenStream`. /// This is only used during the invocation of `derive` proc-macros, /// which require that we cfg-expand their entire input. @@ -281,7 +252,7 @@ impl<'a> StripUnconfigured<'a> { .iter() .flat_map(|tree| match tree.clone() { AttrTokenTree::Attributes(mut data) => { - data.attrs.flat_map_in_place(|attr| self.process_cfg_attr(attr)); + data.attrs.flat_map_in_place(|attr| self.process_cfg_attr(&attr)); if self.in_cfg(&data.attrs) { data.tokens = LazyAttrTokenStream::new( @@ -319,12 +290,16 @@ impl<'a> StripUnconfigured<'a> { /// the syntax of any `cfg_attr` is incorrect. fn process_cfg_attrs<T: HasAttrs>(&self, node: &mut T) { node.visit_attrs(|attrs| { - attrs.flat_map_in_place(|attr| self.process_cfg_attr(attr)); + attrs.flat_map_in_place(|attr| self.process_cfg_attr(&attr)); }); } - fn process_cfg_attr(&self, attr: Attribute) -> Vec<Attribute> { - if attr.has_name(sym::cfg_attr) { self.expand_cfg_attr(attr, true) } else { vec![attr] } + fn process_cfg_attr(&self, attr: &Attribute) -> Vec<Attribute> { + if attr.has_name(sym::cfg_attr) { + self.expand_cfg_attr(attr, true) + } else { + vec![attr.clone()] + } } /// Parse and expand a single `cfg_attr` attribute into a list of attributes @@ -334,9 +309,9 @@ impl<'a> StripUnconfigured<'a> { /// Gives a compiler warning when the `cfg_attr` contains no attributes and /// is in the original source file. Gives a compiler error if the syntax of /// the attribute is incorrect. - pub(crate) fn expand_cfg_attr(&self, attr: Attribute, recursive: bool) -> Vec<Attribute> { + pub(crate) fn expand_cfg_attr(&self, attr: &Attribute, recursive: bool) -> Vec<Attribute> { let Some((cfg_predicate, expanded_attrs)) = - rustc_parse::parse_cfg_attr(&attr, &self.sess.parse_sess) else { + rustc_parse::parse_cfg_attr(attr, &self.sess.parse_sess) else { return vec![]; }; @@ -365,10 +340,10 @@ impl<'a> StripUnconfigured<'a> { // `#[cfg_attr(false, cfg_attr(true, some_attr))]`. expanded_attrs .into_iter() - .flat_map(|item| self.process_cfg_attr(self.expand_cfg_attr_item(&attr, item))) + .flat_map(|item| self.process_cfg_attr(&self.expand_cfg_attr_item(attr, item))) .collect() } else { - expanded_attrs.into_iter().map(|item| self.expand_cfg_attr_item(&attr, item)).collect() + expanded_attrs.into_iter().map(|item| self.expand_cfg_attr_item(attr, item)).collect() } } diff --git a/compiler/rustc_expand/src/expand.rs b/compiler/rustc_expand/src/expand.rs index 4092a192e0c..ec40911545f 100644 --- a/compiler/rustc_expand/src/expand.rs +++ b/compiler/rustc_expand/src/expand.rs @@ -1038,6 +1038,9 @@ trait InvocationCollectorNode: HasAttrs + HasNodeId + Sized { ) -> Result<Self::OutputTy, Self> { Ok(noop_flat_map(node, collector)) } + fn expand_cfg_false(&mut self, collector: &mut InvocationCollector<'_, '_>, span: Span) { + collector.cx.emit_err(RemoveNodeNotSupported { span, descr: Self::descr() }); + } } impl InvocationCollectorNode for P<ast::Item> { @@ -1378,6 +1381,11 @@ impl InvocationCollectorNode for ast::Crate { fn noop_visit<V: MutVisitor>(&mut self, visitor: &mut V) { noop_visit_crate(self, visitor) } + fn expand_cfg_false(&mut self, collector: &mut InvocationCollector<'_, '_>, _span: Span) { + self.attrs.clear(); + // Standard prelude imports are left in the crate for backward compatibility. + self.items.truncate(collector.cx.num_standard_library_imports); + } } impl InvocationCollectorNode for P<ast::Ty> { @@ -1688,7 +1696,7 @@ impl<'a, 'b> InvocationCollector<'a, 'b> { res } - fn expand_cfg_attr(&self, node: &mut impl HasAttrs, attr: ast::Attribute, pos: usize) { + fn expand_cfg_attr(&self, node: &mut impl HasAttrs, attr: &ast::Attribute, pos: usize) { node.visit_attrs(|attrs| { // Repeated `insert` calls is inefficient, but the number of // insertions is almost always 0 or 1 in practice. @@ -1712,7 +1720,7 @@ impl<'a, 'b> InvocationCollector<'a, 'b> { Default::default() } sym::cfg_attr => { - self.expand_cfg_attr(&mut node, attr, pos); + self.expand_cfg_attr(&mut node, &attr, pos); continue; } _ => { @@ -1756,11 +1764,11 @@ impl<'a, 'b> InvocationCollector<'a, 'b> { continue; } - self.cx.emit_err(RemoveNodeNotSupported { span, descr: Node::descr() }); + node.expand_cfg_false(self, span); continue; } sym::cfg_attr => { - self.expand_cfg_attr(node, attr, pos); + self.expand_cfg_attr(node, &attr, pos); continue; } _ => visit_clobber(node, |node| { diff --git a/compiler/rustc_feature/src/active.rs b/compiler/rustc_feature/src/active.rs index e0a7c864b94..b7d280b8751 100644 --- a/compiler/rustc_feature/src/active.rs +++ b/compiler/rustc_feature/src/active.rs @@ -160,6 +160,8 @@ declare_features! ( (active, intrinsics, "1.0.0", None, None), /// Allows using `#[lang = ".."]` attribute for linking items to special compiler logic. (active, lang_items, "1.0.0", None, None), + /// Allows `#[link(..., cfg(..))]`; perma-unstable per #37406 + (active, link_cfg, "1.14.0", None, None), /// Allows the `multiple_supertrait_upcastable` lint. (active, multiple_supertrait_upcastable, "1.69.0", None, None), /// Allows using `#[omit_gdb_pretty_printer_section]`. @@ -432,8 +434,6 @@ declare_features! ( (active, large_assignments, "1.52.0", Some(83518), None), /// Allows `if/while p && let q = r && ...` chains. (active, let_chains, "1.37.0", Some(53667), None), - /// Allows `#[link(..., cfg(..))]`. - (active, link_cfg, "1.14.0", Some(37406), None), /// Allows using `reason` in lint attributes and the `#[expect(lint)]` lint check. (active, lint_reasons, "1.31.0", Some(54503), None), /// Give access to additional metadata about declarative macro meta-variables. diff --git a/compiler/rustc_fs_util/src/lib.rs b/compiler/rustc_fs_util/src/lib.rs index a7dfce3b9b8..81d63338145 100644 --- a/compiler/rustc_fs_util/src/lib.rs +++ b/compiler/rustc_fs_util/src/lib.rs @@ -1,10 +1,11 @@ +#![feature(absolute_path)] #![deny(rustc::untranslatable_diagnostic)] #![deny(rustc::diagnostic_outside_of_impl)] use std::ffi::CString; use std::fs; use std::io; -use std::path::{Path, PathBuf}; +use std::path::{absolute, Path, PathBuf}; // Unfortunately, on windows, it looks like msvcrt.dll is silently translating // verbatim paths under the hood to non-verbatim paths! This manifests itself as @@ -91,3 +92,8 @@ pub fn path_to_c_string(p: &Path) -> CString { pub fn path_to_c_string(p: &Path) -> CString { CString::new(p.to_str().unwrap()).unwrap() } + +#[inline] +pub fn try_canonicalize<P: AsRef<Path>>(path: P) -> io::Result<PathBuf> { + fs::canonicalize(&path).or_else(|_| absolute(&path)) +} diff --git a/compiler/rustc_hir_analysis/src/astconv/mod.rs b/compiler/rustc_hir_analysis/src/astconv/mod.rs index 894995c1bfc..6d9dfe9697c 100644 --- a/compiler/rustc_hir_analysis/src/astconv/mod.rs +++ b/compiler/rustc_hir_analysis/src/astconv/mod.rs @@ -1336,7 +1336,7 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o { ty::Clause::RegionOutlives(_) | ty::Clause::ConstArgHasType(..) => bug!(), }, ty::PredicateKind::WellFormed(_) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ObjectSafe(_) | ty::PredicateKind::ClosureKind(_, _, _) | ty::PredicateKind::Subtype(_) diff --git a/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs b/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs index d4dfe455b29..3d37e0ce0c6 100644 --- a/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs +++ b/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs @@ -11,7 +11,7 @@ use rustc_errors::struct_span_err; use rustc_hir as hir; use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, LocalDefId}; -use rustc_middle::ty::fast_reject::{simplify_type, SimplifiedType, TreatParams, TreatProjections}; +use rustc_middle::ty::fast_reject::{simplify_type, SimplifiedType, TreatParams}; use rustc_middle::ty::{self, CrateInherentImpls, Ty, TyCtxt}; use rustc_span::symbol::sym; @@ -97,12 +97,7 @@ impl<'tcx> InherentCollect<'tcx> { } } - if let Some(simp) = simplify_type( - self.tcx, - self_ty, - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ) { + if let Some(simp) = simplify_type(self.tcx, self_ty, TreatParams::AsCandidateKey) { self.impls_map.incoherent_impls.entry(simp).or_default().push(impl_def_id); } else { bug!("unexpected self type: {:?}", self_ty); @@ -162,12 +157,7 @@ impl<'tcx> InherentCollect<'tcx> { } } - if let Some(simp) = simplify_type( - self.tcx, - ty, - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ) { + if let Some(simp) = simplify_type(self.tcx, ty, TreatParams::AsCandidateKey) { self.impls_map.incoherent_impls.entry(simp).or_default().push(impl_def_id); } else { bug!("unexpected primitive type: {:?}", ty); diff --git a/compiler/rustc_hir_analysis/src/coherence/mod.rs b/compiler/rustc_hir_analysis/src/coherence/mod.rs index 23490bc091c..465e787c92a 100644 --- a/compiler/rustc_hir_analysis/src/coherence/mod.rs +++ b/compiler/rustc_hir_analysis/src/coherence/mod.rs @@ -133,8 +133,8 @@ fn coherent_trait(tcx: TyCtxt<'_>, def_id: DefId) { check_impl(tcx, impl_def_id, trait_ref); check_object_overlap(tcx, impl_def_id, trait_ref); - tcx.sess.time("unsafety_checking", || unsafety::check_item(tcx, impl_def_id)); - tcx.sess.time("orphan_checking", || tcx.ensure().orphan_check_impl(impl_def_id)); + unsafety::check_item(tcx, impl_def_id); + tcx.ensure().orphan_check_impl(impl_def_id); } builtin::check_trait(tcx, def_id); diff --git a/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs b/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs index 91c64eeec1e..7f1e4ccc964 100644 --- a/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs +++ b/compiler/rustc_hir_analysis/src/impl_wf_check/min_specialization.rs @@ -528,7 +528,7 @@ fn trait_predicate_kind<'tcx>( | ty::PredicateKind::Clause(ty::Clause::TypeOutlives(_)) | ty::PredicateKind::Clause(ty::Clause::Projection(_)) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::WellFormed(_) | ty::PredicateKind::Subtype(_) | ty::PredicateKind::Coerce(_) diff --git a/compiler/rustc_hir_analysis/src/outlives/explicit.rs b/compiler/rustc_hir_analysis/src/outlives/explicit.rs index 9ee6785970c..357deb07b8f 100644 --- a/compiler/rustc_hir_analysis/src/outlives/explicit.rs +++ b/compiler/rustc_hir_analysis/src/outlives/explicit.rs @@ -56,7 +56,7 @@ impl<'tcx> ExplicitPredicatesMap<'tcx> { | ty::PredicateKind::Clause(ty::Clause::Projection(..)) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) | ty::PredicateKind::WellFormed(..) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ObjectSafe(..) | ty::PredicateKind::ClosureKind(..) | ty::PredicateKind::Subtype(..) diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs index 8455076de56..3def97bca47 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs @@ -666,7 +666,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { | ty::PredicateKind::Clause(ty::Clause::TypeOutlives(..)) | ty::PredicateKind::WellFormed(..) | ty::PredicateKind::ObjectSafe(..) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::ConstEquate(..) // N.B., this predicate is created by breaking down a diff --git a/compiler/rustc_hir_typeck/src/fn_ctxt/adjust_fulfillment_errors.rs b/compiler/rustc_hir_typeck/src/fn_ctxt/adjust_fulfillment_errors.rs index ec14bd3c6f4..e0ddb90c33b 100644 --- a/compiler/rustc_hir_typeck/src/fn_ctxt/adjust_fulfillment_errors.rs +++ b/compiler/rustc_hir_typeck/src/fn_ctxt/adjust_fulfillment_errors.rs @@ -4,7 +4,7 @@ use rustc_hir::def::Res; use rustc_hir::def_id::DefId; use rustc_infer::traits::ObligationCauseCode; use rustc_middle::ty::{self, Ty, TyCtxt, TypeSuperVisitable, TypeVisitable, TypeVisitor}; -use rustc_span::{self, Span}; +use rustc_span::{self, symbol::kw, Span}; use rustc_trait_selection::traits; use std::ops::ControlFlow; @@ -25,17 +25,28 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { let generics = self.tcx.generics_of(def_id); let predicate_substs = match unsubstituted_pred.kind().skip_binder() { - ty::PredicateKind::Clause(ty::Clause::Trait(pred)) => pred.trait_ref.substs, - ty::PredicateKind::Clause(ty::Clause::Projection(pred)) => pred.projection_ty.substs, - _ => ty::List::empty(), + ty::PredicateKind::Clause(ty::Clause::Trait(pred)) => pred.trait_ref.substs.to_vec(), + ty::PredicateKind::Clause(ty::Clause::Projection(pred)) => { + pred.projection_ty.substs.to_vec() + } + ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(arg, ty)) => { + vec![ty.into(), arg.into()] + } + ty::PredicateKind::ConstEvaluatable(e) => vec![e.into()], + _ => return false, }; - let find_param_matching = |matches: &dyn Fn(&ty::ParamTy) -> bool| { - predicate_substs.types().find_map(|ty| { - ty.walk().find_map(|arg| { + let find_param_matching = |matches: &dyn Fn(ty::ParamTerm) -> bool| { + predicate_substs.iter().find_map(|arg| { + arg.walk().find_map(|arg| { if let ty::GenericArgKind::Type(ty) = arg.unpack() - && let ty::Param(param_ty) = ty.kind() - && matches(param_ty) + && let ty::Param(param_ty) = *ty.kind() + && matches(ty::ParamTerm::Ty(param_ty)) + { + Some(arg) + } else if let ty::GenericArgKind::Const(ct) = arg.unpack() + && let ty::ConstKind::Param(param_ct) = ct.kind() + && matches(ty::ParamTerm::Const(param_ct)) { Some(arg) } else { @@ -47,21 +58,22 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // Prefer generics that are local to the fn item, since these are likely // to be the cause of the unsatisfied predicate. - let mut param_to_point_at = find_param_matching(&|param_ty| { - self.tcx.parent(generics.type_param(param_ty, self.tcx).def_id) == def_id + let mut param_to_point_at = find_param_matching(&|param_term| { + self.tcx.parent(generics.param_at(param_term.index(), self.tcx).def_id) == def_id }); // Fall back to generic that isn't local to the fn item. This will come // from a trait or impl, for example. - let mut fallback_param_to_point_at = find_param_matching(&|param_ty| { - self.tcx.parent(generics.type_param(param_ty, self.tcx).def_id) != def_id - && param_ty.name != rustc_span::symbol::kw::SelfUpper + let mut fallback_param_to_point_at = find_param_matching(&|param_term| { + self.tcx.parent(generics.param_at(param_term.index(), self.tcx).def_id) != def_id + && !matches!(param_term, ty::ParamTerm::Ty(ty) if ty.name == kw::SelfUpper) }); // Finally, the `Self` parameter is possibly the reason that the predicate // is unsatisfied. This is less likely to be true for methods, because // method probe means that we already kinda check that the predicates due // to the `Self` type are true. - let mut self_param_to_point_at = - find_param_matching(&|param_ty| param_ty.name == rustc_span::symbol::kw::SelfUpper); + let mut self_param_to_point_at = find_param_matching( + &|param_term| matches!(param_term, ty::ParamTerm::Ty(ty) if ty.name == kw::SelfUpper), + ); // Finally, for ambiguity-related errors, we actually want to look // for a parameter that is the source of the inference type left @@ -225,14 +237,12 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { .own_substs(ty::InternalSubsts::identity_for_item(self.tcx, def_id)); let Some((index, _)) = own_substs .iter() - .filter(|arg| matches!(arg.unpack(), ty::GenericArgKind::Type(_))) .enumerate() .find(|(_, arg)| **arg == param_to_point_at) else { return false }; let Some(arg) = segment .args() .args .iter() - .filter(|arg| matches!(arg, hir::GenericArg::Type(_))) .nth(index) else { return false; }; error.obligation.cause.span = arg .span() diff --git a/compiler/rustc_hir_typeck/src/method/probe.rs b/compiler/rustc_hir_typeck/src/method/probe.rs index b6d39341fe7..dab709e17f0 100644 --- a/compiler/rustc_hir_typeck/src/method/probe.rs +++ b/compiler/rustc_hir_typeck/src/method/probe.rs @@ -16,7 +16,6 @@ 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::ty::fast_reject::TreatProjections; use rustc_middle::ty::fast_reject::{simplify_type, TreatParams}; use rustc_middle::ty::AssocItem; use rustc_middle::ty::GenericParamDefKind; @@ -701,7 +700,7 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { } fn assemble_inherent_candidates_for_incoherent_ty(&mut self, self_ty: Ty<'tcx>) { - let Some(simp) = simplify_type(self.tcx, self_ty, TreatParams::AsCandidateKey, TreatProjections::AsCandidateKey) else { + let Some(simp) = simplify_type(self.tcx, self_ty, TreatParams::AsCandidateKey) else { bug!("unexpected incoherent type: {:?}", self_ty) }; for &impl_def_id in self.tcx.incoherent_impls(simp) { @@ -838,7 +837,7 @@ impl<'a, 'tcx> ProbeContext<'a, 'tcx> { | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::ConstEquate(..) | ty::PredicateKind::Ambiguous - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::TypeWellFormedFromEnv(..) => None, } }); diff --git a/compiler/rustc_hir_typeck/src/method/suggest.rs b/compiler/rustc_hir_typeck/src/method/suggest.rs index b219be4ae19..55f684599e7 100644 --- a/compiler/rustc_hir_typeck/src/method/suggest.rs +++ b/compiler/rustc_hir_typeck/src/method/suggest.rs @@ -25,7 +25,6 @@ use rustc_infer::infer::{ use rustc_middle::infer::unify_key::{ConstVariableOrigin, ConstVariableOriginKind}; use rustc_middle::traits::util::supertraits; use rustc_middle::ty::fast_reject::DeepRejectCtxt; -use rustc_middle::ty::fast_reject::TreatProjections; use rustc_middle::ty::fast_reject::{simplify_type, TreatParams}; use rustc_middle::ty::print::{with_crate_prefix, with_forced_trimmed_paths}; use rustc_middle::ty::{self, GenericArgKind, Ty, TyCtxt, TypeVisitableExt}; @@ -1524,7 +1523,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { .into_iter() .any(|info| self.associated_value(info.def_id, item_name).is_some()); let found_assoc = |ty: Ty<'tcx>| { - simplify_type(tcx, ty, TreatParams::AsCandidateKey, TreatProjections::AsCandidateKey) + simplify_type(tcx, ty, TreatParams::AsCandidateKey) .and_then(|simp| { tcx.incoherent_impls(simp) .iter() @@ -2653,12 +2652,9 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { // FIXME: Even though negative bounds are not implemented, we could maybe handle // cases where a positive bound implies a negative impl. (candidates, Vec::new()) - } else if let Some(simp_rcvr_ty) = simplify_type( - self.tcx, - rcvr_ty, - TreatParams::ForLookup, - TreatProjections::ForLookup, - ) { + } else if let Some(simp_rcvr_ty) = + simplify_type(self.tcx, rcvr_ty, TreatParams::ForLookup) + { let mut potential_candidates = Vec::new(); let mut explicitly_negative = Vec::new(); for candidate in candidates { @@ -2671,12 +2667,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> { }) .any(|imp_did| { let imp = self.tcx.impl_trait_ref(imp_did).unwrap().subst_identity(); - let imp_simp = simplify_type( - self.tcx, - imp.self_ty(), - TreatParams::ForLookup, - TreatProjections::ForLookup, - ); + let imp_simp = + simplify_type(self.tcx, imp.self_ty(), TreatParams::ForLookup); imp_simp.map_or(false, |s| s == simp_rcvr_ty) }) { diff --git a/compiler/rustc_incremental/src/persist/fs.rs b/compiler/rustc_incremental/src/persist/fs.rs index 4deae9f41c7..d6f83838a04 100644 --- a/compiler/rustc_incremental/src/persist/fs.rs +++ b/compiler/rustc_incremental/src/persist/fs.rs @@ -108,7 +108,7 @@ use rustc_data_structures::fx::{FxHashMap, FxHashSet}; use rustc_data_structures::svh::Svh; use rustc_data_structures::{base_n, flock}; use rustc_errors::ErrorGuaranteed; -use rustc_fs_util::{link_or_copy, LinkOrCopy}; +use rustc_fs_util::{link_or_copy, try_canonicalize, LinkOrCopy}; use rustc_session::{Session, StableCrateId}; use rustc_span::Symbol; @@ -223,7 +223,7 @@ pub fn prepare_session_directory( // because, on windows, long paths can cause problems; // canonicalization inserts this weird prefix that makes windows // tolerate long paths. - let crate_dir = match crate_dir.canonicalize() { + let crate_dir = match try_canonicalize(&crate_dir) { Ok(v) => v, Err(err) => { return Err(sess.emit_err(errors::CanonicalizePath { path: crate_dir, err })); @@ -867,7 +867,7 @@ fn all_except_most_recent( /// before passing it to std::fs::remove_dir_all(). This will convert the path /// into the '\\?\' format, which supports much longer paths. fn safe_remove_dir_all(p: &Path) -> io::Result<()> { - let canonicalized = match std_fs::canonicalize(p) { + let canonicalized = match try_canonicalize(p) { Ok(canonicalized) => canonicalized, Err(err) if err.kind() == io::ErrorKind::NotFound => return Ok(()), Err(err) => return Err(err), @@ -877,7 +877,7 @@ fn safe_remove_dir_all(p: &Path) -> io::Result<()> { } fn safe_remove_file(p: &Path) -> io::Result<()> { - let canonicalized = match std_fs::canonicalize(p) { + let canonicalized = match try_canonicalize(p) { Ok(canonicalized) => canonicalized, Err(err) if err.kind() == io::ErrorKind::NotFound => return Ok(()), Err(err) => return Err(err), diff --git a/compiler/rustc_infer/src/infer/combine.rs b/compiler/rustc_infer/src/infer/combine.rs index 4503af03ca3..88a28e26005 100644 --- a/compiler/rustc_infer/src/infer/combine.rs +++ b/compiler/rustc_infer/src/infer/combine.rs @@ -128,7 +128,7 @@ impl<'tcx> InferCtxt<'tcx> { (_, ty::Alias(AliasKind::Projection, _)) | (ty::Alias(AliasKind::Projection, _), _) if self.tcx.trait_solver_next() => { - relation.register_type_equate_obligation(a, b); + relation.register_type_relate_obligation(a, b); Ok(a) } @@ -842,23 +842,25 @@ pub trait ObligationEmittingRelation<'tcx>: TypeRelation<'tcx> { let (a, b) = if self.a_is_expected() { (a, b) } else { (b, a) }; self.register_predicates([ty::Binder::dummy(if self.tcx().trait_solver_next() { - ty::PredicateKind::AliasEq(a.into(), b.into()) + ty::PredicateKind::AliasRelate(a.into(), b.into(), ty::AliasRelationDirection::Equate) } else { ty::PredicateKind::ConstEquate(a, b) })]); } - /// Register an obligation that both types must be equal to each other. - /// - /// If they aren't equal then the relation doesn't hold. - fn register_type_equate_obligation(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) { - let (a, b) = if self.a_is_expected() { (a, b) } else { (b, a) }; - - self.register_predicates([ty::Binder::dummy(ty::PredicateKind::AliasEq( + /// Register an obligation that both types must be related to each other according to + /// the [`ty::AliasRelationDirection`] given by [`ObligationEmittingRelation::alias_relate_direction`] + fn register_type_relate_obligation(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) { + self.register_predicates([ty::Binder::dummy(ty::PredicateKind::AliasRelate( a.into(), b.into(), + self.alias_relate_direction(), ))]); } + + /// Relation direction emitted for `AliasRelate` predicates, corresponding to the direction + /// of the relation. + fn alias_relate_direction(&self) -> ty::AliasRelationDirection; } fn int_unification_error<'tcx>( diff --git a/compiler/rustc_infer/src/infer/equate.rs b/compiler/rustc_infer/src/infer/equate.rs index c92a74b6241..38002357cde 100644 --- a/compiler/rustc_infer/src/infer/equate.rs +++ b/compiler/rustc_infer/src/infer/equate.rs @@ -210,4 +210,8 @@ impl<'tcx> ObligationEmittingRelation<'tcx> for Equate<'_, '_, 'tcx> { fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>) { self.fields.register_obligations(obligations); } + + fn alias_relate_direction(&self) -> ty::AliasRelationDirection { + ty::AliasRelationDirection::Equate + } } diff --git a/compiler/rustc_infer/src/infer/glb.rs b/compiler/rustc_infer/src/infer/glb.rs index 5c12351226a..6395c4d4b20 100644 --- a/compiler/rustc_infer/src/infer/glb.rs +++ b/compiler/rustc_infer/src/infer/glb.rs @@ -155,4 +155,9 @@ impl<'tcx> ObligationEmittingRelation<'tcx> for Glb<'_, '_, 'tcx> { fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>) { self.fields.register_obligations(obligations); } + + fn alias_relate_direction(&self) -> ty::AliasRelationDirection { + // FIXME(deferred_projection_equality): This isn't right, I think? + ty::AliasRelationDirection::Equate + } } diff --git a/compiler/rustc_infer/src/infer/lub.rs b/compiler/rustc_infer/src/infer/lub.rs index dbef42db8f1..98cbd4c561c 100644 --- a/compiler/rustc_infer/src/infer/lub.rs +++ b/compiler/rustc_infer/src/infer/lub.rs @@ -155,4 +155,9 @@ impl<'tcx> ObligationEmittingRelation<'tcx> for Lub<'_, '_, 'tcx> { fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>) { self.fields.register_obligations(obligations) } + + fn alias_relate_direction(&self) -> ty::AliasRelationDirection { + // FIXME(deferred_projection_equality): This isn't right, I think? + ty::AliasRelationDirection::Equate + } } diff --git a/compiler/rustc_infer/src/infer/nll_relate/mod.rs b/compiler/rustc_infer/src/infer/nll_relate/mod.rs index 2320f6bfb16..f5d20cb7ebf 100644 --- a/compiler/rustc_infer/src/infer/nll_relate/mod.rs +++ b/compiler/rustc_infer/src/infer/nll_relate/mod.rs @@ -711,6 +711,34 @@ where fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>) { self.delegate.register_obligations(obligations); } + + fn alias_relate_direction(&self) -> ty::AliasRelationDirection { + unreachable!("manually overridden to handle ty::Variance::Contravariant ambient variance") + } + + fn register_type_relate_obligation(&mut self, a: Ty<'tcx>, b: Ty<'tcx>) { + self.register_predicates([ty::Binder::dummy(match self.ambient_variance { + ty::Variance::Covariant => ty::PredicateKind::AliasRelate( + a.into(), + b.into(), + ty::AliasRelationDirection::Subtype, + ), + // a :> b is b <: a + ty::Variance::Contravariant => ty::PredicateKind::AliasRelate( + b.into(), + a.into(), + ty::AliasRelationDirection::Subtype, + ), + ty::Variance::Invariant => ty::PredicateKind::AliasRelate( + a.into(), + b.into(), + ty::AliasRelationDirection::Equate, + ), + // FIXME(deferred_projection_equality): Implement this when we trigger it. + // Probably just need to do nothing here. + ty::Variance::Bivariant => unreachable!(), + })]); + } } /// When we encounter a binder like `for<..> fn(..)`, we actually have diff --git a/compiler/rustc_infer/src/infer/outlives/mod.rs b/compiler/rustc_infer/src/infer/outlives/mod.rs index 83f3d5a74fb..048dad3a48b 100644 --- a/compiler/rustc_infer/src/infer/outlives/mod.rs +++ b/compiler/rustc_infer/src/infer/outlives/mod.rs @@ -22,7 +22,7 @@ pub fn explicit_outlives_bounds<'tcx>( ty::PredicateKind::Clause(ty::Clause::Projection(..)) | ty::PredicateKind::Clause(ty::Clause::Trait(..)) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::Coerce(..) | ty::PredicateKind::Subtype(..) | ty::PredicateKind::WellFormed(..) diff --git a/compiler/rustc_infer/src/infer/projection.rs b/compiler/rustc_infer/src/infer/projection.rs index f795047709e..fa6529dfa93 100644 --- a/compiler/rustc_infer/src/infer/projection.rs +++ b/compiler/rustc_infer/src/infer/projection.rs @@ -26,7 +26,7 @@ impl<'tcx> InferCtxt<'tcx> { // completely change the normalization routine with the new solver. // // The new solver correctly handles projection equality so this hack - // is not necessary. if re-enabled it should emit `PredicateKind::AliasEq` + // is not necessary. if re-enabled it should emit `PredicateKind::AliasRelate` // not `PredicateKind::Clause(Clause::Projection(..))` as in the new solver // `Projection` is used as `normalizes-to` which will fail for `<T as Trait>::Assoc eq ?0`. return projection_ty.to_ty(self.tcx); diff --git a/compiler/rustc_infer/src/infer/sub.rs b/compiler/rustc_infer/src/infer/sub.rs index 230cadb1184..fc73ca7606d 100644 --- a/compiler/rustc_infer/src/infer/sub.rs +++ b/compiler/rustc_infer/src/infer/sub.rs @@ -236,4 +236,8 @@ impl<'tcx> ObligationEmittingRelation<'tcx> for Sub<'_, '_, 'tcx> { fn register_obligations(&mut self, obligations: PredicateObligations<'tcx>) { self.fields.register_obligations(obligations); } + + fn alias_relate_direction(&self) -> ty::AliasRelationDirection { + ty::AliasRelationDirection::Subtype + } } diff --git a/compiler/rustc_infer/src/traits/util.rs b/compiler/rustc_infer/src/traits/util.rs index c07ff516579..0d2faeba5fc 100644 --- a/compiler/rustc_infer/src/traits/util.rs +++ b/compiler/rustc_infer/src/traits/util.rs @@ -293,7 +293,7 @@ impl<'tcx> Elaborator<'tcx> { // Nothing to elaborate } ty::PredicateKind::Ambiguous => {} - ty::PredicateKind::AliasEq(..) => { + ty::PredicateKind::AliasRelate(..) => { // No } ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) => { diff --git a/compiler/rustc_interface/Cargo.toml b/compiler/rustc_interface/Cargo.toml index ac6e8fca695..96d6a1cb062 100644 --- a/compiler/rustc_interface/Cargo.toml +++ b/compiler/rustc_interface/Cargo.toml @@ -16,6 +16,7 @@ rustc_attr = { path = "../rustc_attr" } rustc_borrowck = { path = "../rustc_borrowck" } rustc_builtin_macros = { path = "../rustc_builtin_macros" } rustc_expand = { path = "../rustc_expand" } +rustc_fs_util = { path = "../rustc_fs_util" } rustc_macros = { path = "../rustc_macros" } rustc_parse = { path = "../rustc_parse" } rustc_session = { path = "../rustc_session" } diff --git a/compiler/rustc_interface/src/passes.rs b/compiler/rustc_interface/src/passes.rs index 71bdd4df95b..413b40ab808 100644 --- a/compiler/rustc_interface/src/passes.rs +++ b/compiler/rustc_interface/src/passes.rs @@ -3,7 +3,6 @@ use crate::interface::{Compiler, Result}; use crate::proc_macro_decls; use crate::util; -use ast::CRATE_NODE_ID; use rustc_ast::{self as ast, visit}; use rustc_borrowck as mir_borrowck; use rustc_codegen_ssa::traits::CodegenBackend; @@ -12,6 +11,7 @@ use rustc_data_structures::steal::Steal; use rustc_data_structures::sync::{Lrc, OnceCell, WorkerLocal}; use rustc_errors::PResult; use rustc_expand::base::{ExtCtxt, LintStoreExpand}; +use rustc_fs_util::try_canonicalize; use rustc_hir::def_id::{StableCrateId, LOCAL_CRATE}; use rustc_lint::{unerased_lint_store, BufferedEarlyLint, EarlyCheckNode, LintStore}; use rustc_metadata::creader::CStore; @@ -76,22 +76,14 @@ pub fn register_plugins<'a>( sess: &'a Session, metadata_loader: &'a dyn MetadataLoader, register_lints: impl Fn(&Session, &mut LintStore), - mut krate: ast::Crate, + pre_configured_attrs: &[ast::Attribute], crate_name: Symbol, -) -> Result<(ast::Crate, LintStore)> { - krate = sess.time("attributes_injection", || { - rustc_builtin_macros::cmdline_attrs::inject( - krate, - &sess.parse_sess, - &sess.opts.unstable_opts.crate_attr, - ) - }); - - let (krate, features) = rustc_expand::config::features(sess, krate, CRATE_NODE_ID); +) -> Result<LintStore> { // these need to be set "early" so that expansion sees `quote` if enabled. + let features = rustc_expand::config::features(sess, pre_configured_attrs); sess.init_features(features); - let crate_types = util::collect_crate_types(sess, &krate.attrs); + let crate_types = util::collect_crate_types(sess, pre_configured_attrs); sess.init_crate_types(crate_types); let stable_crate_id = StableCrateId::new( @@ -117,8 +109,9 @@ pub fn register_plugins<'a>( let mut lint_store = rustc_lint::new_lint_store(sess.enable_internal_lints()); register_lints(sess, &mut lint_store); - let registrars = - sess.time("plugin_loading", || plugin::load::load_plugins(sess, metadata_loader, &krate)); + let registrars = sess.time("plugin_loading", || { + plugin::load::load_plugins(sess, metadata_loader, pre_configured_attrs) + }); sess.time("plugin_registration", || { let mut registry = plugin::Registry { lint_store: &mut lint_store }; for registrar in registrars { @@ -126,7 +119,7 @@ pub fn register_plugins<'a>( } }); - Ok((krate, lint_store)) + Ok(lint_store) } fn pre_expansion_lint<'a>( @@ -173,19 +166,29 @@ impl LintStoreExpand for LintStoreExpandImpl<'_> { /// harness if one is to be provided, injection of a dependency on the /// standard library and prelude, and name resolution. #[instrument(level = "trace", skip(krate, resolver))] -fn configure_and_expand(mut krate: ast::Crate, resolver: &mut Resolver<'_, '_>) -> ast::Crate { +fn configure_and_expand( + mut krate: ast::Crate, + pre_configured_attrs: &[ast::Attribute], + resolver: &mut Resolver<'_, '_>, +) -> ast::Crate { let tcx = resolver.tcx(); let sess = tcx.sess; let lint_store = unerased_lint_store(tcx); let crate_name = tcx.crate_name(LOCAL_CRATE); - pre_expansion_lint(sess, lint_store, tcx.registered_tools(()), &krate, crate_name); + let lint_check_node = (&krate, pre_configured_attrs); + pre_expansion_lint(sess, lint_store, tcx.registered_tools(()), lint_check_node, crate_name); rustc_builtin_macros::register_builtin_macros(resolver); - krate = sess.time("crate_injection", || { - rustc_builtin_macros::standard_library_imports::inject(krate, resolver, sess) + let num_standard_library_imports = sess.time("crate_injection", || { + rustc_builtin_macros::standard_library_imports::inject( + &mut krate, + pre_configured_attrs, + resolver, + sess, + ) }); - util::check_attr_crate_type(sess, &krate.attrs, &mut resolver.lint_buffer()); + util::check_attr_crate_type(sess, pre_configured_attrs, &mut resolver.lint_buffer()); // Expand all macros krate = sess.time("macro_expand_crate", || { @@ -222,7 +225,7 @@ fn configure_and_expand(mut krate: ast::Crate, resolver: &mut Resolver<'_, '_>) // Create the config for macro expansion let features = sess.features_untracked(); - let recursion_limit = get_recursion_limit(&krate.attrs, sess); + let recursion_limit = get_recursion_limit(pre_configured_attrs, sess); let cfg = rustc_expand::expand::ExpansionConfig { features: Some(features), recursion_limit, @@ -235,6 +238,7 @@ fn configure_and_expand(mut krate: ast::Crate, resolver: &mut Resolver<'_, '_>) let lint_store = LintStoreExpandImpl(lint_store); let mut ecx = ExtCtxt::new(sess, cfg, resolver, Some(&lint_store)); + ecx.num_standard_library_imports = num_standard_library_imports; // Expand macros now! let krate = sess.time("expand_crate", || ecx.monotonic_expander().expand_crate(krate)); @@ -263,7 +267,7 @@ fn configure_and_expand(mut krate: ast::Crate, resolver: &mut Resolver<'_, '_>) }); sess.time("maybe_building_test_harness", || { - rustc_builtin_macros::test_harness::inject(sess, resolver, &mut krate) + rustc_builtin_macros::test_harness::inject(&mut krate, sess, resolver) }); let has_proc_macro_decls = sess.time("AST_validation", || { @@ -287,12 +291,12 @@ fn configure_and_expand(mut krate: ast::Crate, resolver: &mut Resolver<'_, '_>) sess.emit_warning(errors::ProcMacroCratePanicAbort); } - krate = sess.time("maybe_create_a_macro_crate", || { + sess.time("maybe_create_a_macro_crate", || { let is_test_crate = sess.opts.test; rustc_builtin_macros::proc_macro_harness::inject( + &mut krate, sess, resolver, - krate, is_proc_macro_crate, has_proc_macro_decls, is_test_crate, @@ -356,7 +360,7 @@ fn early_lint_checks(tcx: TyCtxt<'_>, (): ()) { tcx.registered_tools(()), Some(lint_buffer), rustc_lint::BuiltinCombinedEarlyLintPass::new(), - &**krate, + (&**krate, &*krate.attrs), ) } @@ -405,12 +409,12 @@ where } fn output_contains_path(output_paths: &[PathBuf], input_path: &Path) -> bool { - let input_path = input_path.canonicalize().ok(); + let input_path = try_canonicalize(input_path).ok(); if input_path.is_none() { return false; } let check = |output_path: &PathBuf| { - if output_path.canonicalize().ok() == input_path { Some(()) } else { None } + if try_canonicalize(output_path).ok() == input_path { Some(()) } else { None } }; check_output(output_paths, check).is_some() } @@ -557,9 +561,9 @@ fn resolver_for_lowering<'tcx>( ) -> &'tcx Steal<(ty::ResolverAstLowering, Lrc<ast::Crate>)> { let arenas = Resolver::arenas(); let _ = tcx.registered_tools(()); // Uses `crate_for_resolver`. - let krate = tcx.crate_for_resolver(()).steal(); - let mut resolver = Resolver::new(tcx, &krate, &arenas); - let krate = configure_and_expand(krate, &mut resolver); + let (krate, pre_configured_attrs) = tcx.crate_for_resolver(()).steal(); + let mut resolver = Resolver::new(tcx, &pre_configured_attrs, krate.spans.inner_span, &arenas); + let krate = configure_and_expand(krate, &pre_configured_attrs, &mut resolver); // Make sure we don't mutate the cstore from here on. tcx.untracked().cstore.leak(); diff --git a/compiler/rustc_interface/src/queries.rs b/compiler/rustc_interface/src/queries.rs index 58ad044b399..d2293780836 100644 --- a/compiler/rustc_interface/src/queries.rs +++ b/compiler/rustc_interface/src/queries.rs @@ -88,8 +88,9 @@ pub struct Queries<'tcx> { dep_graph_future: Query<Option<DepGraphFuture>>, parse: Query<ast::Crate>, + pre_configure: Query<(ast::Crate, ast::AttrVec)>, crate_name: Query<Symbol>, - register_plugins: Query<(ast::Crate, Lrc<LintStore>)>, + register_plugins: Query<(ast::Crate, ast::AttrVec, Lrc<LintStore>)>, dep_graph: Query<DepGraph>, // This just points to what's in `gcx_cell`. gcx: Query<&'tcx GlobalCtxt<'tcx>>, @@ -106,6 +107,7 @@ impl<'tcx> Queries<'tcx> { hir_arena: WorkerLocal::new(|_| rustc_hir::Arena::default()), dep_graph_future: Default::default(), parse: Default::default(), + pre_configure: Default::default(), crate_name: Default::default(), register_plugins: Default::default(), dep_graph: Default::default(), @@ -133,17 +135,36 @@ impl<'tcx> Queries<'tcx> { .compute(|| passes::parse(self.session()).map_err(|mut parse_error| parse_error.emit())) } - pub fn register_plugins(&self) -> Result<QueryResult<'_, (ast::Crate, Lrc<LintStore>)>> { + pub fn pre_configure(&self) -> Result<QueryResult<'_, (ast::Crate, ast::AttrVec)>> { + self.pre_configure.compute(|| { + let mut krate = self.parse()?.steal(); + + let sess = self.session(); + rustc_builtin_macros::cmdline_attrs::inject( + &mut krate, + &sess.parse_sess, + &sess.opts.unstable_opts.crate_attr, + ); + + let pre_configured_attrs = + rustc_expand::config::pre_configure_attrs(sess, &krate.attrs); + Ok((krate, pre_configured_attrs)) + }) + } + + pub fn register_plugins( + &self, + ) -> Result<QueryResult<'_, (ast::Crate, ast::AttrVec, Lrc<LintStore>)>> { self.register_plugins.compute(|| { let crate_name = *self.crate_name()?.borrow(); - let krate = self.parse()?.steal(); + let (krate, pre_configured_attrs) = self.pre_configure()?.steal(); let empty: &(dyn Fn(&Session, &mut LintStore) + Sync + Send) = &|_, _| {}; - let (krate, lint_store) = passes::register_plugins( + let lint_store = passes::register_plugins( self.session(), &*self.codegen_backend().metadata_loader(), self.compiler.register_lints.as_deref().unwrap_or_else(|| empty), - krate, + &pre_configured_attrs, crate_name, )?; @@ -154,17 +175,17 @@ impl<'tcx> Queries<'tcx> { // called, which happens within passes::register_plugins(). self.dep_graph_future().ok(); - Ok((krate, Lrc::new(lint_store))) + Ok((krate, pre_configured_attrs, Lrc::new(lint_store))) }) } fn crate_name(&self) -> Result<QueryResult<'_, Symbol>> { self.crate_name.compute(|| { Ok({ - let parse_result = self.parse()?; - let krate = parse_result.borrow(); + let pre_configure_result = self.pre_configure()?; + let (_, pre_configured_attrs) = &*pre_configure_result.borrow(); // parse `#[crate_name]` even if `--crate-name` was passed, to make sure it matches. - find_crate_name(self.session(), &krate.attrs) + find_crate_name(self.session(), pre_configured_attrs) }) }) } @@ -188,7 +209,7 @@ impl<'tcx> Queries<'tcx> { pub fn global_ctxt(&'tcx self) -> Result<QueryResult<'_, &'tcx GlobalCtxt<'tcx>>> { self.gcx.compute(|| { let crate_name = *self.crate_name()?.borrow(); - let (krate, lint_store) = self.register_plugins()?.steal(); + let (krate, pre_configured_attrs, lint_store) = self.register_plugins()?.steal(); let sess = self.session(); @@ -215,7 +236,7 @@ impl<'tcx> Queries<'tcx> { feed.crate_name(crate_name); let feed = tcx.feed_unit_query(); - feed.crate_for_resolver(tcx.arena.alloc(Steal::new(krate))); + feed.crate_for_resolver(tcx.arena.alloc(Steal::new((krate, pre_configured_attrs)))); feed.metadata_loader( tcx.arena.alloc(Steal::new(self.codegen_backend().metadata_loader())), ); diff --git a/compiler/rustc_interface/src/tests.rs b/compiler/rustc_interface/src/tests.rs index 014810dba9c..eb5990507fb 100644 --- a/compiler/rustc_interface/src/tests.rs +++ b/compiler/rustc_interface/src/tests.rs @@ -2,6 +2,7 @@ use crate::interface::parse_cfgspecs; use rustc_data_structures::fx::FxHashSet; +use rustc_data_structures::profiling::TimePassesFormat; use rustc_errors::{emitter::HumanReadableErrorType, registry, ColorConfig}; use rustc_session::config::rustc_optgroups; use rustc_session::config::Input; @@ -699,6 +700,7 @@ fn test_unstable_options_tracking_hash() { untracked!(threads, 99); untracked!(time_llvm_passes, true); untracked!(time_passes, true); + untracked!(time_passes_format, TimePassesFormat::Json); untracked!(trace_macros, true); untracked!(track_diagnostics, true); untracked!(trim_diagnostic_paths, false); diff --git a/compiler/rustc_lint/messages.ftl b/compiler/rustc_lint/messages.ftl index c822237413c..68e62c9789a 100644 --- a/compiler/rustc_lint/messages.ftl +++ b/compiler/rustc_lint/messages.ftl @@ -508,6 +508,3 @@ lint_opaque_hidden_inferred_bound = opaque type `{$ty}` does not satisfy its ass .specifically = this associated type bound is unsatisfied for `{$proj_ty}` lint_opaque_hidden_inferred_bound_sugg = add this bound - -lint_useless_anonymous_reexport = useless anonymous re-export - .note = only anonymous re-exports of traits are useful, this is {$article} `{$desc}` diff --git a/compiler/rustc_lint/src/builtin.rs b/compiler/rustc_lint/src/builtin.rs index 29ba480cdd2..64c3ef45137 100644 --- a/compiler/rustc_lint/src/builtin.rs +++ b/compiler/rustc_lint/src/builtin.rs @@ -1600,7 +1600,7 @@ impl<'tcx> LateLintPass<'tcx> for TrivialConstraints { // Ignore projections, as they can only be global // if the trait bound is global Clause(Clause::Projection(..)) | - AliasEq(..) | + AliasRelate(..) | // Ignore bounds that a user can't type WellFormed(..) | ObjectSafe(..) | diff --git a/compiler/rustc_lint/src/context.rs b/compiler/rustc_lint/src/context.rs index f5a711315ea..626c09fea07 100644 --- a/compiler/rustc_lint/src/context.rs +++ b/compiler/rustc_lint/src/context.rs @@ -910,6 +910,10 @@ pub trait LintContext: Sized { Applicability::MachineApplicable, ); } + BuiltinLintDiagnostics::AmbiguousGlobReexports { name, namespace, first_reexport_span, duplicate_reexport_span } => { + db.span_label(first_reexport_span, format!("the name `{}` in the {} namespace is first re-exported here", name, namespace)); + db.span_label(duplicate_reexport_span, format!("but the name `{}` in the {} namespace is also re-exported here", name, namespace)); + } } // Rewrap `db`, and pass control to the user. decorate(db) diff --git a/compiler/rustc_lint/src/early.rs b/compiler/rustc_lint/src/early.rs index fc151730223..65607d71805 100644 --- a/compiler/rustc_lint/src/early.rs +++ b/compiler/rustc_lint/src/early.rs @@ -340,7 +340,7 @@ pub trait EarlyCheckNode<'a>: Copy { 'a: 'b; } -impl<'a> EarlyCheckNode<'a> for &'a ast::Crate { +impl<'a> EarlyCheckNode<'a> for (&'a ast::Crate, &'a [ast::Attribute]) { fn id(self) -> ast::NodeId { ast::CRATE_NODE_ID } @@ -348,15 +348,15 @@ impl<'a> EarlyCheckNode<'a> for &'a ast::Crate { where 'a: 'b, { - &self.attrs + &self.1 } fn check<'b, T: EarlyLintPass>(self, cx: &mut EarlyContextAndPass<'b, T>) where 'a: 'b, { - lint_callback!(cx, check_crate, self); - ast_visit::walk_crate(cx, self); - lint_callback!(cx, check_crate_post, self); + lint_callback!(cx, check_crate, self.0); + ast_visit::walk_crate(cx, self.0); + lint_callback!(cx, check_crate_post, self.0); } } diff --git a/compiler/rustc_lint/src/lib.rs b/compiler/rustc_lint/src/lib.rs index c2cc2fcdf55..b3578540516 100644 --- a/compiler/rustc_lint/src/lib.rs +++ b/compiler/rustc_lint/src/lib.rs @@ -74,7 +74,6 @@ mod opaque_hidden_inferred_bound; mod pass_by_value; mod passes; mod redundant_semicolon; -mod reexports; mod traits; mod types; mod unused; @@ -112,7 +111,6 @@ use noop_method_call::*; use opaque_hidden_inferred_bound::*; use pass_by_value::*; use redundant_semicolon::*; -use reexports::*; use traits::*; use types::*; use unused::*; @@ -244,7 +242,6 @@ late_lint_methods!( OpaqueHiddenInferredBound: OpaqueHiddenInferredBound, MultipleSupertraitUpcastable: MultipleSupertraitUpcastable, MapUnitFn: MapUnitFn, - UselessAnonymousReexport: UselessAnonymousReexport, ] ] ); diff --git a/compiler/rustc_lint/src/lints.rs b/compiler/rustc_lint/src/lints.rs index 46a025f41e0..308c02929ca 100644 --- a/compiler/rustc_lint/src/lints.rs +++ b/compiler/rustc_lint/src/lints.rs @@ -1528,11 +1528,3 @@ pub struct UnusedAllocationDiag; #[derive(LintDiagnostic)] #[diag(lint_unused_allocation_mut)] pub struct UnusedAllocationMutDiag; - -#[derive(LintDiagnostic)] -#[diag(lint_useless_anonymous_reexport)] -#[note] -pub struct UselessAnonymousReexportDiag { - pub article: &'static str, - pub desc: &'static str, -} diff --git a/compiler/rustc_lint/src/opaque_hidden_inferred_bound.rs b/compiler/rustc_lint/src/opaque_hidden_inferred_bound.rs index 883a56cb3ce..f9d43fe2200 100644 --- a/compiler/rustc_lint/src/opaque_hidden_inferred_bound.rs +++ b/compiler/rustc_lint/src/opaque_hidden_inferred_bound.rs @@ -27,6 +27,8 @@ declare_lint! { /// ### Example /// /// ```rust + /// #![feature(type_alias_impl_trait)] + /// /// trait Duh {} /// /// impl Duh for i32 {} @@ -41,7 +43,9 @@ declare_lint! { /// type Assoc = F; /// } /// - /// fn test() -> impl Trait<Assoc = impl Sized> { + /// type Tait = impl Sized; + /// + /// fn test() -> impl Trait<Assoc = Tait> { /// 42 /// } /// ``` @@ -54,7 +58,7 @@ declare_lint! { /// /// Although the hidden type, `i32` does satisfy this bound, we do not /// consider the return type to be well-formed with this lint. It can be - /// fixed by changing `impl Sized` into `impl Sized + Send`. + /// fixed by changing `Tait = impl Sized` into `Tait = impl Sized + Send`. pub OPAQUE_HIDDEN_INFERRED_BOUND, Warn, "detects the use of nested `impl Trait` types in associated type bounds that are not general enough" @@ -64,7 +68,7 @@ declare_lint_pass!(OpaqueHiddenInferredBound => [OPAQUE_HIDDEN_INFERRED_BOUND]); impl<'tcx> LateLintPass<'tcx> for OpaqueHiddenInferredBound { fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx hir::Item<'tcx>) { - let hir::ItemKind::OpaqueTy(_) = &item.kind else { return; }; + let hir::ItemKind::OpaqueTy(opaque) = &item.kind else { return; }; let def_id = item.owner_id.def_id.to_def_id(); let infcx = &cx.tcx.infer_ctxt().build(); // For every projection predicate in the opaque type's explicit bounds, @@ -81,6 +85,17 @@ impl<'tcx> LateLintPass<'tcx> for OpaqueHiddenInferredBound { // have opaques in them anyways. let Some(proj_term) = proj.term.ty() else { continue }; + // HACK: `impl Trait<Assoc = impl Trait2>` from an RPIT is "ok"... + if let ty::Alias(ty::Opaque, opaque_ty) = *proj_term.kind() + && cx.tcx.parent(opaque_ty.def_id) == def_id + && matches!( + opaque.origin, + hir::OpaqueTyOrigin::FnReturn(_) | hir::OpaqueTyOrigin::AsyncFn(_) + ) + { + continue; + } + let proj_ty = cx.tcx.mk_projection(proj.projection_ty.def_id, proj.projection_ty.substs); // For every instance of the projection type in the bounds, diff --git a/compiler/rustc_lint/src/reexports.rs b/compiler/rustc_lint/src/reexports.rs deleted file mode 100644 index 8737a57ea02..00000000000 --- a/compiler/rustc_lint/src/reexports.rs +++ /dev/null @@ -1,82 +0,0 @@ -use crate::lints::UselessAnonymousReexportDiag; -use crate::{LateContext, LateLintPass, LintContext}; -use rustc_hir::def::DefKind; -use rustc_hir::def_id::DefId; -use rustc_hir::{Item, ItemKind, UseKind}; -use rustc_middle::ty::Visibility; -use rustc_span::symbol::kw; -use rustc_span::Span; - -declare_lint! { - /// The `useless_anonymous_reexport` lint checks if anonymous re-exports - /// are re-exports of traits. - /// - /// ### Example - /// - /// ```rust,compile_fail - /// #![deny(useless_anonymous_reexport)] - /// - /// mod sub { - /// pub struct Bar; - /// } - /// - /// pub use self::sub::Bar as _; - /// # fn main() {} - /// ``` - /// - /// {{produces}} - /// - /// ### Explanation - /// - /// Anonymous re-exports are only useful if it's a re-export of a trait - /// in case you want to give access to it. If you re-export any other kind, - /// you won't be able to use it since its name won't be accessible. - pub USELESS_ANONYMOUS_REEXPORT, - Warn, - "useless anonymous re-export" -} - -declare_lint_pass!(UselessAnonymousReexport => [USELESS_ANONYMOUS_REEXPORT]); - -fn emit_err(cx: &LateContext<'_>, span: Span, def_id: DefId) { - let article = cx.tcx.def_descr_article(def_id); - let desc = cx.tcx.def_descr(def_id); - cx.emit_spanned_lint( - USELESS_ANONYMOUS_REEXPORT, - span, - UselessAnonymousReexportDiag { article, desc }, - ); -} - -impl<'tcx> LateLintPass<'tcx> for UselessAnonymousReexport { - fn check_item(&mut self, cx: &LateContext<'tcx>, item: &'tcx Item<'tcx>) { - if let ItemKind::Use(path, kind) = item.kind && - !matches!(kind, UseKind::Glob) && - item.ident.name == kw::Underscore && - // We only want re-exports. If it's just a `use X;`, then we ignore it. - match cx.tcx.local_visibility(item.owner_id.def_id) { - Visibility::Public => true, - Visibility::Restricted(level) => { - level != cx.tcx.parent_module_from_def_id(item.owner_id.def_id) - } - } - { - for def_id in path.res.iter().filter_map(|r| r.opt_def_id()) { - match cx.tcx.def_kind(def_id) { - DefKind::Trait | DefKind::TraitAlias => {} - DefKind::TyAlias => { - let ty = cx.tcx.type_of(def_id); - if !ty.0.is_trait() { - emit_err(cx, item.span, def_id); - break; - } - } - _ => { - emit_err(cx, item.span, def_id); - break; - } - } - } - } - } -} diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs index 91966e75b5f..9d6ab0b75df 100644 --- a/compiler/rustc_lint_defs/src/builtin.rs +++ b/compiler/rustc_lint_defs/src/builtin.rs @@ -3230,6 +3230,45 @@ declare_lint! { }; } +declare_lint! { + /// The `ambiguous_glob_reexports` lint detects cases where names re-exported via globs + /// collide. Downstream users trying to use the same name re-exported from multiple globs + /// will receive a warning pointing out redefinition of the same name. + /// + /// ### Example + /// + /// ```rust,compile_fail + /// #![deny(ambiguous_glob_reexports)] + /// pub mod foo { + /// pub type X = u8; + /// } + /// + /// pub mod bar { + /// pub type Y = u8; + /// pub type X = u8; + /// } + /// + /// pub use foo::*; + /// pub use bar::*; + /// + /// + /// pub fn main() {} + /// ``` + /// + /// {{produces}} + /// + /// ### Explanation + /// + /// This was previously accepted but it could silently break a crate's downstream users code. + /// For example, if `foo::*` and `bar::*` were re-exported before `bar::X` was added to the + /// re-exports, down stream users could use `this_crate::X` without problems. However, adding + /// `bar::X` would cause compilation errors in downstream crates because `X` is defined + /// multiple times in the same namespace of `this_crate`. + pub AMBIGUOUS_GLOB_REEXPORTS, + Warn, + "ambiguous glob re-exports", +} + declare_lint_pass! { /// Does nothing as a lint pass, but registers some `Lint`s /// that are used by other parts of the compiler. @@ -3337,6 +3376,7 @@ declare_lint_pass! { NAMED_ARGUMENTS_USED_POSITIONALLY, IMPLIED_BOUNDS_ENTAILMENT, BYTE_SLICE_IN_PACKED_STRUCT_WITH_DERIVE, + AMBIGUOUS_GLOB_REEXPORTS, ] } @@ -3968,14 +4008,9 @@ declare_lint! { /// /// ### Example /// - /// ```rust,ignore (need FFI) - /// #![feature(ffi_unwind_calls)] + /// ```rust /// #![feature(c_unwind)] - /// - /// # mod impl { - /// # #[no_mangle] - /// # pub fn "C-unwind" fn foo() {} - /// # } + /// #![warn(ffi_unwind_calls)] /// /// extern "C-unwind" { /// fn foo(); diff --git a/compiler/rustc_lint_defs/src/lib.rs b/compiler/rustc_lint_defs/src/lib.rs index 6f22bdabff4..69a8b691ab2 100644 --- a/compiler/rustc_lint_defs/src/lib.rs +++ b/compiler/rustc_lint_defs/src/lib.rs @@ -529,6 +529,16 @@ pub enum BuiltinLintDiagnostics { vis_span: Span, ident_span: Span, }, + AmbiguousGlobReexports { + /// The name for which collision(s) have occurred. + name: String, + /// The name space for whihc the collision(s) occurred in. + namespace: String, + /// Span where the name is first re-exported. + first_reexport_span: Span, + /// Span where the same name is also re-exported. + duplicate_reexport_span: Span, + }, } /// Lints that are buffered up early on in the `Session` before the diff --git a/compiler/rustc_metadata/Cargo.toml b/compiler/rustc_metadata/Cargo.toml index bee5c8541d6..4d7c133e09b 100644 --- a/compiler/rustc_metadata/Cargo.toml +++ b/compiler/rustc_metadata/Cargo.toml @@ -18,6 +18,7 @@ rustc_attr = { path = "../rustc_attr" } rustc_data_structures = { path = "../rustc_data_structures" } rustc_errors = { path = "../rustc_errors" } rustc_feature = { path = "../rustc_feature" } +rustc_fs_util = { path = "../rustc_fs_util" } rustc_hir = { path = "../rustc_hir" } rustc_hir_pretty = { path = "../rustc_hir_pretty" } rustc_target = { path = "../rustc_target" } diff --git a/compiler/rustc_metadata/src/locator.rs b/compiler/rustc_metadata/src/locator.rs index c48e681eb94..79c42a128e7 100644 --- a/compiler/rustc_metadata/src/locator.rs +++ b/compiler/rustc_metadata/src/locator.rs @@ -222,6 +222,7 @@ use rustc_data_structures::owning_ref::OwningRef; use rustc_data_structures::svh::Svh; use rustc_data_structures::sync::MetadataRef; use rustc_errors::{DiagnosticArgValue, FatalError, IntoDiagnosticArg}; +use rustc_fs_util::try_canonicalize; use rustc_session::config::{self, CrateType}; use rustc_session::cstore::{CrateSource, MetadataLoader}; use rustc_session::filesearch::FileSearch; @@ -236,7 +237,7 @@ use snap::read::FrameDecoder; use std::borrow::Cow; use std::io::{Read, Result as IoResult, Write}; use std::path::{Path, PathBuf}; -use std::{cmp, fmt, fs}; +use std::{cmp, fmt}; #[derive(Clone)] pub(crate) struct CrateLocator<'a> { @@ -441,7 +442,7 @@ impl<'a> CrateLocator<'a> { info!("lib candidate: {}", spf.path.display()); let (rlibs, rmetas, dylibs) = candidates.entry(hash.to_string()).or_default(); - let path = fs::canonicalize(&spf.path).unwrap_or_else(|_| spf.path.clone()); + let path = try_canonicalize(&spf.path).unwrap_or_else(|_| spf.path.clone()); if seen_paths.contains(&path) { continue; }; @@ -636,7 +637,7 @@ impl<'a> CrateLocator<'a> { // as well. if let Some((prev, _)) = &ret { let sysroot = self.sysroot; - let sysroot = sysroot.canonicalize().unwrap_or_else(|_| sysroot.to_path_buf()); + let sysroot = try_canonicalize(sysroot).unwrap_or_else(|_| sysroot.to_path_buf()); if prev.starts_with(&sysroot) { continue; } diff --git a/compiler/rustc_metadata/src/rmeta/decoder.rs b/compiler/rustc_metadata/src/rmeta/decoder.rs index cabc144077f..06a64f0db0e 100644 --- a/compiler/rustc_metadata/src/rmeta/decoder.rs +++ b/compiler/rustc_metadata/src/rmeta/decoder.rs @@ -925,10 +925,6 @@ impl<'a, 'tcx> CrateMetadataRef<'a> { tcx.mk_adt_def(did, adt_kind, variants, repr) } - fn get_generics(self, item_id: DefIndex, sess: &Session) -> ty::Generics { - self.root.tables.generics_of.get(self, item_id).unwrap().decode((self, sess)) - } - fn get_visibility(self, id: DefIndex) -> Visibility<DefId> { self.root .tables @@ -1045,13 +1041,6 @@ impl<'a, 'tcx> CrateMetadataRef<'a> { self.root.tables.optimized_mir.get(self, id).is_some() } - fn module_expansion(self, id: DefIndex, sess: &Session) -> ExpnId { - match self.def_kind(id) { - DefKind::Mod | DefKind::Enum | DefKind::Trait => self.get_expn_that_defined(id, sess), - _ => panic!("Expected module, found {:?}", self.local_def_id(id)), - } - } - fn get_fn_has_self_parameter(self, id: DefIndex, sess: &'a Session) -> bool { self.root .tables diff --git a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs index caff01498d9..3a50d7c9363 100644 --- a/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs +++ b/compiler/rustc_metadata/src/rmeta/decoder/cstore_impl.rs @@ -490,6 +490,9 @@ pub(in crate::rmeta) fn provide(providers: &mut Providers) { .alloc_slice(&CStore::from_tcx(tcx).crate_dependencies_in_postorder(LOCAL_CRATE)) }, crates: |tcx, ()| { + // The list of loaded crates is now frozen in query cache, + // so make sure cstore is not mutably accessed from here on. + tcx.untracked().cstore.leak(); tcx.arena.alloc_from_iter(CStore::from_tcx(tcx).iter_crate_data().map(|(cnum, _)| cnum)) }, ..*providers @@ -537,20 +540,16 @@ impl CStore { ) } - pub fn get_span_untracked(&self, def_id: DefId, sess: &Session) -> Span { + pub fn def_span_untracked(&self, def_id: DefId, sess: &Session) -> Span { self.get_crate_data(def_id.krate).get_span(def_id.index, sess) } - pub fn def_kind(&self, def: DefId) -> DefKind { + pub fn def_kind_untracked(&self, def: DefId) -> DefKind { self.get_crate_data(def.krate).def_kind(def.index) } - pub fn item_generics_num_lifetimes(&self, def_id: DefId, sess: &Session) -> usize { - self.get_crate_data(def_id.krate).get_generics(def_id.index, sess).own_counts().lifetimes - } - - pub fn module_expansion_untracked(&self, def_id: DefId, sess: &Session) -> ExpnId { - self.get_crate_data(def_id.krate).module_expansion(def_id.index, sess) + pub fn expn_that_defined_untracked(&self, def_id: DefId, sess: &Session) -> ExpnId { + self.get_crate_data(def_id.krate).get_expn_that_defined(def_id.index, sess) } /// Only public-facing way to traverse all the definitions in a non-local crate. @@ -560,14 +559,6 @@ impl CStore { self.get_crate_data(cnum).num_def_ids() } - pub fn item_attrs_untracked<'a>( - &'a self, - def_id: DefId, - sess: &'a Session, - ) -> impl Iterator<Item = ast::Attribute> + 'a { - self.get_crate_data(def_id.krate).get_item_attrs(def_id.index, sess) - } - pub fn get_proc_macro_quoted_span_untracked( &self, cnum: CrateNum, diff --git a/compiler/rustc_metadata/src/rmeta/encoder.rs b/compiler/rustc_metadata/src/rmeta/encoder.rs index 0b438d1ffad..2652a4280d3 100644 --- a/compiler/rustc_metadata/src/rmeta/encoder.rs +++ b/compiler/rustc_metadata/src/rmeta/encoder.rs @@ -27,7 +27,7 @@ use rustc_middle::mir::interpret; use rustc_middle::query::LocalCrate; use rustc_middle::traits::specialization_graph; use rustc_middle::ty::codec::TyEncoder; -use rustc_middle::ty::fast_reject::{self, SimplifiedType, TreatParams, TreatProjections}; +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; @@ -1881,7 +1881,6 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> { self.tcx, trait_ref.self_ty(), TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, ); fx_hash_map diff --git a/compiler/rustc_middle/src/arena.rs b/compiler/rustc_middle/src/arena.rs index 72907fba5e6..9f16ecbdaa9 100644 --- a/compiler/rustc_middle/src/arena.rs +++ b/compiler/rustc_middle/src/arena.rs @@ -36,7 +36,7 @@ macro_rules! arena_types { )>, [] output_filenames: std::sync::Arc<rustc_session::config::OutputFilenames>, [] metadata_loader: rustc_data_structures::steal::Steal<Box<rustc_session::cstore::MetadataLoaderDyn>>, - [] crate_for_resolver: rustc_data_structures::steal::Steal<rustc_ast::ast::Crate>, + [] crate_for_resolver: rustc_data_structures::steal::Steal<(rustc_ast::Crate, rustc_ast::AttrVec)>, [] resolutions: rustc_middle::ty::ResolverGlobalCtxt, [decode] unsafety_check_result: rustc_middle::mir::UnsafetyCheckResult, [decode] code_region: rustc_middle::mir::coverage::CodeRegion, diff --git a/compiler/rustc_middle/src/mir/mod.rs b/compiler/rustc_middle/src/mir/mod.rs index 638c082cc84..9c575f6eb9f 100644 --- a/compiler/rustc_middle/src/mir/mod.rs +++ b/compiler/rustc_middle/src/mir/mod.rs @@ -1967,7 +1967,8 @@ impl<'tcx> Rvalue<'tcx> { | CastKind::PtrToPtr | CastKind::Pointer(_) | CastKind::PointerFromExposedAddress - | CastKind::DynStar, + | CastKind::DynStar + | CastKind::Transmute, _, _, ) diff --git a/compiler/rustc_middle/src/mir/syntax.rs b/compiler/rustc_middle/src/mir/syntax.rs index 3a893cdabf6..bbd913d071d 100644 --- a/compiler/rustc_middle/src/mir/syntax.rs +++ b/compiler/rustc_middle/src/mir/syntax.rs @@ -1156,6 +1156,13 @@ pub enum CastKind { IntToFloat, PtrToPtr, FnPtrToPtr, + /// Reinterpret the bits of the input as a different type. + /// + /// MIR is well-formed if the input and output types have different sizes, + /// but running a transmute between differently-sized types is UB. + /// + /// Allowed only in [`MirPhase::Runtime`]; Earlier it's a [`TerminatorKind::Call`]. + Transmute, } #[derive(Clone, Debug, PartialEq, Eq, TyEncodable, TyDecodable, Hash, HashStable)] diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs index f740ec51080..9203dd59a7e 100644 --- a/compiler/rustc_middle/src/query/mod.rs +++ b/compiler/rustc_middle/src/query/mod.rs @@ -2116,7 +2116,7 @@ rustc_queries! { desc { "raw operations for metadata file access" } } - query crate_for_resolver((): ()) -> &'tcx Steal<rustc_ast::ast::Crate> { + query crate_for_resolver((): ()) -> &'tcx Steal<(rustc_ast::Crate, rustc_ast::AttrVec)> { feedable no_hash desc { "the ast before macro expansion and name resolution" } diff --git a/compiler/rustc_middle/src/ty/fast_reject.rs b/compiler/rustc_middle/src/ty/fast_reject.rs index ee505742be9..669d50a7fda 100644 --- a/compiler/rustc_middle/src/ty/fast_reject.rs +++ b/compiler/rustc_middle/src/ty/fast_reject.rs @@ -56,7 +56,15 @@ pub enum TreatParams { AsCandidateKey, /// Treat parameters as placeholders in the given environment. This is the /// correct mode for *lookup*, as during candidate selection. + /// + /// This also treats projections with inference variables as infer vars + /// since they could be further normalized. ForLookup, + /// Treat parameters as placeholders in the given environment. This is the + /// correct mode for *lookup*, as during candidate selection. + /// + /// N.B. during deep rejection, this acts identically to `ForLookup`. + NextSolverLookup, } /// During fast-rejection, we have the choice of treating projection types @@ -64,13 +72,6 @@ pub enum TreatParams { /// to be normalized/rigid. #[derive(PartialEq, Eq, Debug, Clone, Copy)] pub enum TreatProjections { - /// In candidates, we may be able to normalize the projection - /// after instantiating the candidate and equating it with a goal. - /// - /// We must assume that the `impl<T> Trait<T> for <T as Id>::This` - /// can apply to all self types so we don't return a simplified type - /// for `<T as Id>::This`. - AsCandidateKey, /// In the old solver we don't try to normalize projections /// when looking up impls and only access them by using the /// current self type. This means that if the self type is @@ -107,7 +108,6 @@ pub fn simplify_type<'tcx>( tcx: TyCtxt<'tcx>, ty: Ty<'tcx>, treat_params: TreatParams, - treat_projections: TreatProjections, ) -> Option<SimplifiedType> { match *ty.kind() { ty::Bool => Some(BoolSimplifiedType), @@ -136,13 +136,20 @@ pub fn simplify_type<'tcx>( ty::FnPtr(f) => Some(FunctionSimplifiedType(f.skip_binder().inputs().len())), ty::Placeholder(..) => Some(PlaceholderSimplifiedType), ty::Param(_) => match treat_params { - TreatParams::ForLookup => Some(PlaceholderSimplifiedType), + TreatParams::ForLookup | TreatParams::NextSolverLookup => { + Some(PlaceholderSimplifiedType) + } TreatParams::AsCandidateKey => None, }, - ty::Alias(..) => match treat_projections { - TreatProjections::ForLookup if !ty.needs_infer() => Some(PlaceholderSimplifiedType), - TreatProjections::NextSolverLookup => Some(PlaceholderSimplifiedType), - TreatProjections::AsCandidateKey | TreatProjections::ForLookup => None, + ty::Alias(..) => match treat_params { + // When treating `ty::Param` as a placeholder, projections also + // don't unify with anything else as long as they are fully normalized. + // + // We will have to be careful with lazy normalization here. + // FIXME(lazy_normalization): This is probably not right... + TreatParams::ForLookup if !ty.has_non_region_infer() => Some(PlaceholderSimplifiedType), + TreatParams::NextSolverLookup => Some(PlaceholderSimplifiedType), + TreatParams::ForLookup | TreatParams::AsCandidateKey => None, }, ty::Foreign(def_id) => Some(ForeignSimplifiedType(def_id)), ty::Bound(..) | ty::Infer(_) | ty::Error(_) => None, @@ -310,7 +317,7 @@ impl DeepRejectCtxt { // Depending on the value of `treat_obligation_params`, we either // treat generic parameters like placeholders or like inference variables. ty::Param(_) => match self.treat_obligation_params { - TreatParams::ForLookup => false, + TreatParams::ForLookup | TreatParams::NextSolverLookup => false, TreatParams::AsCandidateKey => true, }, @@ -348,7 +355,7 @@ impl DeepRejectCtxt { let k = impl_ct.kind(); match obligation_ct.kind() { ty::ConstKind::Param(_) => match self.treat_obligation_params { - TreatParams::ForLookup => false, + TreatParams::ForLookup | TreatParams::NextSolverLookup => false, TreatParams::AsCandidateKey => true, }, diff --git a/compiler/rustc_middle/src/ty/flags.rs b/compiler/rustc_middle/src/ty/flags.rs index 91241ff404f..5a6ee123811 100644 --- a/compiler/rustc_middle/src/ty/flags.rs +++ b/compiler/rustc_middle/src/ty/flags.rs @@ -288,7 +288,7 @@ impl FlagComputation { self.add_ty(ty); } ty::PredicateKind::Ambiguous => {} - ty::PredicateKind::AliasEq(t1, t2) => { + ty::PredicateKind::AliasRelate(t1, t2, _) => { self.add_term(t1); self.add_term(t2); } diff --git a/compiler/rustc_middle/src/ty/mod.rs b/compiler/rustc_middle/src/ty/mod.rs index 9b0c6e25d16..e3cd5cca785 100644 --- a/compiler/rustc_middle/src/ty/mod.rs +++ b/compiler/rustc_middle/src/ty/mod.rs @@ -543,7 +543,7 @@ impl<'tcx> Predicate<'tcx> { | PredicateKind::Clause(Clause::TypeOutlives(_)) | PredicateKind::Clause(Clause::Projection(_)) | PredicateKind::Clause(Clause::ConstArgHasType(..)) - | PredicateKind::AliasEq(..) + | PredicateKind::AliasRelate(..) | PredicateKind::ObjectSafe(_) | PredicateKind::ClosureKind(_, _, _) | PredicateKind::Subtype(_) @@ -640,7 +640,23 @@ pub enum PredicateKind<'tcx> { /// This predicate requires two terms to be equal to eachother. /// /// Only used for new solver - AliasEq(Term<'tcx>, Term<'tcx>), + AliasRelate(Term<'tcx>, Term<'tcx>, AliasRelationDirection), +} + +#[derive(Clone, Copy, PartialEq, Eq, Hash, TyEncodable, TyDecodable)] +#[derive(HashStable, Debug)] +pub enum AliasRelationDirection { + Equate, + Subtype, +} + +impl std::fmt::Display for AliasRelationDirection { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + match self { + AliasRelationDirection::Equate => write!(f, " == "), + AliasRelationDirection::Subtype => write!(f, " <: "), + } + } } /// The crate outlives map is computed during typeck and contains the @@ -976,11 +992,11 @@ impl<'tcx> Term<'tcx> { } } - /// This function returns `None` for `AliasKind::Opaque`. + /// This function returns the inner `AliasTy` if this term is a projection. /// /// FIXME: rename `AliasTy` to `AliasTerm` and make sure we correctly /// deal with constants. - pub fn to_alias_term_no_opaque(&self, tcx: TyCtxt<'tcx>) -> Option<AliasTy<'tcx>> { + pub fn to_projection_term(&self, tcx: TyCtxt<'tcx>) -> Option<AliasTy<'tcx>> { match self.unpack() { TermKind::Ty(ty) => match ty.kind() { ty::Alias(kind, alias_ty) => match kind { @@ -1035,6 +1051,21 @@ impl<'tcx> TermKind<'tcx> { } } +#[derive(Copy, Clone, PartialEq, Eq, Debug)] +pub enum ParamTerm { + Ty(ParamTy), + Const(ParamConst), +} + +impl ParamTerm { + pub fn index(self) -> usize { + match self { + ParamTerm::Ty(ty) => ty.index as usize, + ParamTerm::Const(ct) => ct.index as usize, + } + } +} + /// This kind of predicate has no *direct* correspondent in the /// syntax, but it roughly corresponds to the syntactic forms: /// @@ -1206,7 +1237,7 @@ impl<'tcx> Predicate<'tcx> { PredicateKind::Clause(Clause::Trait(t)) => Some(predicate.rebind(t)), PredicateKind::Clause(Clause::Projection(..)) | PredicateKind::Clause(Clause::ConstArgHasType(..)) - | PredicateKind::AliasEq(..) + | PredicateKind::AliasRelate(..) | PredicateKind::Subtype(..) | PredicateKind::Coerce(..) | PredicateKind::Clause(Clause::RegionOutlives(..)) @@ -1227,7 +1258,7 @@ impl<'tcx> Predicate<'tcx> { PredicateKind::Clause(Clause::Projection(t)) => Some(predicate.rebind(t)), PredicateKind::Clause(Clause::Trait(..)) | PredicateKind::Clause(Clause::ConstArgHasType(..)) - | PredicateKind::AliasEq(..) + | PredicateKind::AliasRelate(..) | PredicateKind::Subtype(..) | PredicateKind::Coerce(..) | PredicateKind::Clause(Clause::RegionOutlives(..)) @@ -1249,7 +1280,7 @@ impl<'tcx> Predicate<'tcx> { PredicateKind::Clause(Clause::Trait(..)) | PredicateKind::Clause(Clause::ConstArgHasType(..)) | PredicateKind::Clause(Clause::Projection(..)) - | PredicateKind::AliasEq(..) + | PredicateKind::AliasRelate(..) | PredicateKind::Subtype(..) | PredicateKind::Coerce(..) | PredicateKind::Clause(Clause::RegionOutlives(..)) diff --git a/compiler/rustc_middle/src/ty/print/pretty.rs b/compiler/rustc_middle/src/ty/print/pretty.rs index fffdbfc9660..de4c703107e 100644 --- a/compiler/rustc_middle/src/ty/print/pretty.rs +++ b/compiler/rustc_middle/src/ty/print/pretty.rs @@ -704,7 +704,11 @@ pub trait PrettyPrinter<'tcx>: ty::BoundTyKind::Anon(bv) => { self.pretty_print_bound_var(debruijn, ty::BoundVar::from_u32(bv))? } - ty::BoundTyKind::Param(_, s) => p!(write("{}", s)), + ty::BoundTyKind::Param(_, s) => match self.should_print_verbose() { + true if debruijn == ty::INNERMOST => p!(write("^{}", s)), + true => p!(write("^{}_{}", debruijn.index(), s)), + false => p!(write("{}", s)), + }, }, ty::Adt(def, substs) => { p!(print_def_path(def.did(), substs)); @@ -2847,7 +2851,7 @@ define_print_and_forward_display! { p!("the type `", print(ty), "` is found in the environment") } ty::PredicateKind::Ambiguous => p!("ambiguous"), - ty::PredicateKind::AliasEq(t1, t2) => p!(print(t1), " == ", print(t2)), + ty::PredicateKind::AliasRelate(t1, t2, dir) => p!(print(t1), write(" {} ", dir), print(t2)), } } diff --git a/compiler/rustc_middle/src/ty/structural_impls.rs b/compiler/rustc_middle/src/ty/structural_impls.rs index ef643531bb2..c6bb8146795 100644 --- a/compiler/rustc_middle/src/ty/structural_impls.rs +++ b/compiler/rustc_middle/src/ty/structural_impls.rs @@ -177,7 +177,9 @@ impl<'tcx> fmt::Debug for ty::PredicateKind<'tcx> { write!(f, "TypeWellFormedFromEnv({:?})", ty) } ty::PredicateKind::Ambiguous => write!(f, "Ambiguous"), - ty::PredicateKind::AliasEq(t1, t2) => write!(f, "AliasEq({t1:?}, {t2:?})"), + ty::PredicateKind::AliasRelate(t1, t2, dir) => { + write!(f, "AliasRelate({t1:?}, {dir:?}, {t2:?})") + } } } } @@ -250,6 +252,7 @@ TrivialTypeTraversalAndLiftImpls! { crate::ty::AssocItem, crate::ty::AssocKind, crate::ty::AliasKind, + crate::ty::AliasRelationDirection, crate::ty::Placeholder<crate::ty::BoundRegionKind>, crate::ty::Placeholder<crate::ty::BoundTyKind>, crate::ty::ClosureKind, diff --git a/compiler/rustc_middle/src/ty/trait_def.rs b/compiler/rustc_middle/src/ty/trait_def.rs index bf2b121f704..6747da7abd3 100644 --- a/compiler/rustc_middle/src/ty/trait_def.rs +++ b/compiler/rustc_middle/src/ty/trait_def.rs @@ -153,12 +153,7 @@ impl<'tcx> TyCtxt<'tcx> { self_ty: Ty<'tcx>, ) -> impl Iterator<Item = DefId> + 'tcx { let impls = self.trait_impls_of(trait_def_id); - if let Some(simp) = fast_reject::simplify_type( - self, - self_ty, - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ) { + if let Some(simp) = fast_reject::simplify_type(self, self_ty, TreatParams::AsCandidateKey) { if let Some(impls) = impls.non_blanket_impls.get(&simp) { return impls.iter().copied(); } @@ -191,13 +186,17 @@ impl<'tcx> TyCtxt<'tcx> { } } + // Note that we're using `TreatParams::ForLookup` to query `non_blanket_impls` while using + // `TreatParams::AsCandidateKey` while actually adding them. + let treat_params = match treat_projections { + TreatProjections::NextSolverLookup => TreatParams::NextSolverLookup, + TreatProjections::ForLookup => TreatParams::ForLookup, + }; // This way, when searching for some impl for `T: Trait`, we do not look at any impls // whose outer level is not a parameter or projection. Especially for things like // `T: Clone` this is incredibly useful as we would otherwise look at all the impls // of `Clone` for `Option<T>`, `Vec<T>`, `ConcreteType` and so on. - if let Some(simp) = - fast_reject::simplify_type(self, self_ty, TreatParams::ForLookup, treat_projections) - { + if let Some(simp) = fast_reject::simplify_type(self, self_ty, treat_params) { if let Some(impls) = impls.non_blanket_impls.get(&simp) { for &impl_def_id in impls { if let result @ Some(_) = f(impl_def_id) { @@ -258,12 +257,9 @@ pub(super) fn trait_impls_of_provider(tcx: TyCtxt<'_>, trait_id: DefId) -> Trait continue; } - if let Some(simplified_self_ty) = fast_reject::simplify_type( - tcx, - impl_self_ty, - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ) { + if let Some(simplified_self_ty) = + fast_reject::simplify_type(tcx, impl_self_ty, TreatParams::AsCandidateKey) + { impls.non_blanket_impls.entry(simplified_self_ty).or_default().push(impl_def_id); } else { impls.blanket_impls.push(impl_def_id); 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 adbd37a7cd9..bf58b3090fb 100644 --- a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs +++ b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs @@ -137,6 +137,10 @@ impl<'tcx, 'body> ParseCtxt<'tcx, 'body> { fn parse_rvalue(&self, expr_id: ExprId) -> PResult<Rvalue<'tcx>> { parse_by_kind!(self, expr_id, expr, "rvalue", @call("mir_discriminant", args) => self.parse_place(args[0]).map(Rvalue::Discriminant), + @call("mir_cast_transmute", args) => { + let source = self.parse_operand(args[0])?; + Ok(Rvalue::Cast(CastKind::Transmute, source, expr.ty)) + }, @call("mir_checked", args) => { parse_by_kind!(self, args[0], _, "binary op", ExprKind::Binary { op, lhs, rhs } => Ok(Rvalue::CheckedBinaryOp( diff --git a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs index 140d1154718..3b775f590a4 100644 --- a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs +++ b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs @@ -566,41 +566,51 @@ impl<'a, 'tcx> Builder<'a, 'tcx> { Rvalue::Use(Operand::Move(val)) } BinOp::Shl | BinOp::Shr if self.check_overflow && ty.is_integral() => { - // Consider that the shift overflows if `rhs < 0` or `rhs >= bits`. - // This can be encoded as a single operation as `(rhs & -bits) != 0`. - let (size, _) = ty.int_size_and_signed(self.tcx); - let bits = size.bits(); - debug_assert!(bits.is_power_of_two()); - let mask = !((bits - 1) as u128); - + // For an unsigned RHS, the shift is in-range for `rhs < bits`. + // For a signed RHS, `IntToInt` cast to the equivalent unsigned + // type and do that same comparison. Because the type is the + // same size, there's no negative shift amount that ends up + // overlapping with valid ones, thus it catches negatives too. + let (lhs_size, _) = ty.int_size_and_signed(self.tcx); let rhs_ty = rhs.ty(&self.local_decls, self.tcx); let (rhs_size, _) = rhs_ty.int_size_and_signed(self.tcx); - let mask = Operand::const_from_scalar( + + let (unsigned_rhs, unsigned_ty) = match rhs_ty.kind() { + ty::Uint(_) => (rhs.to_copy(), rhs_ty), + ty::Int(int_width) => { + let uint_ty = self.tcx.mk_mach_uint(int_width.to_unsigned()); + let rhs_temp = self.temp(uint_ty, span); + self.cfg.push_assign( + block, + source_info, + rhs_temp, + Rvalue::Cast(CastKind::IntToInt, rhs.to_copy(), uint_ty), + ); + (Operand::Move(rhs_temp), uint_ty) + } + _ => unreachable!("only integers are shiftable"), + }; + + // This can't overflow because the largest shiftable types are 128-bit, + // which fits in `u8`, the smallest possible `unsigned_ty`. + // (And `from_uint` will `bug!` if that's ever no longer true.) + let lhs_bits = Operand::const_from_scalar( self.tcx, - rhs_ty, - Scalar::from_uint(rhs_size.truncate(mask), rhs_size), + unsigned_ty, + Scalar::from_uint(lhs_size.bits(), rhs_size), span, ); - let outer_bits = self.temp(rhs_ty, span); - self.cfg.push_assign( - block, - source_info, - outer_bits, - Rvalue::BinaryOp(BinOp::BitAnd, Box::new((rhs.to_copy(), mask))), - ); - - let overflows = self.temp(bool_ty, span); - let zero = self.zero_literal(span, rhs_ty); + let inbounds = self.temp(bool_ty, span); self.cfg.push_assign( block, source_info, - overflows, - Rvalue::BinaryOp(BinOp::Ne, Box::new((Operand::Move(outer_bits), zero))), + inbounds, + Rvalue::BinaryOp(BinOp::Lt, Box::new((unsigned_rhs, lhs_bits))), ); let overflow_err = AssertKind::Overflow(op, lhs.to_copy(), rhs.to_copy()); - block = self.assert(block, Operand::Move(overflows), false, overflow_err, span); + block = self.assert(block, Operand::Move(inbounds), true, overflow_err, span); Rvalue::BinaryOp(op, Box::new((lhs, rhs))) } BinOp::Div | BinOp::Rem if ty.is_integral() => { diff --git a/compiler/rustc_mir_transform/src/const_prop.rs b/compiler/rustc_mir_transform/src/const_prop.rs index 8b81abb23b0..c1cf6ee0f9e 100644 --- a/compiler/rustc_mir_transform/src/const_prop.rs +++ b/compiler/rustc_mir_transform/src/const_prop.rs @@ -504,6 +504,15 @@ impl<'mir, 'tcx> ConstPropagator<'mir, 'tcx> { return None; } + // Do not try creating references, nor any types with potentially-complex + // invariants. This avoids an issue where checking validity would do a + // bunch of work generating a nice message about the invariant violation, + // only to not show it to anyone (since this isn't the lint). + Rvalue::Cast(CastKind::Transmute, op, dst_ty) if !dst_ty.is_primitive() => { + trace!("skipping Transmute of {:?} to {:?}", op, dst_ty); + + return None; + } // There's no other checking to do at this time. Rvalue::Aggregate(..) diff --git a/compiler/rustc_mir_transform/src/lower_intrinsics.rs b/compiler/rustc_mir_transform/src/lower_intrinsics.rs index 46eab1184bd..6a7ceb8fef7 100644 --- a/compiler/rustc_mir_transform/src/lower_intrinsics.rs +++ b/compiler/rustc_mir_transform/src/lower_intrinsics.rs @@ -221,6 +221,32 @@ impl<'tcx> MirPass<'tcx> for LowerIntrinsics { terminator.kind = TerminatorKind::Goto { target }; } } + sym::transmute => { + let dst_ty = destination.ty(local_decls, tcx).ty; + let Ok([arg]) = <[_; 1]>::try_from(std::mem::take(args)) else { + span_bug!( + terminator.source_info.span, + "Wrong number of arguments for transmute intrinsic", + ); + }; + + // Always emit the cast, even if we transmute to an uninhabited type, + // because that lets CTFE and codegen generate better error messages + // when such a transmute actually ends up reachable. + block.statements.push(Statement { + source_info: terminator.source_info, + kind: StatementKind::Assign(Box::new(( + *destination, + Rvalue::Cast(CastKind::Transmute, arg, dst_ty), + ))), + }); + + if let Some(target) = *target { + terminator.kind = TerminatorKind::Goto { target }; + } else { + terminator.kind = TerminatorKind::Unreachable; + } + } _ if intrinsic_name.as_str().starts_with("simd_shuffle") => { validate_simd_shuffle(tcx, args, terminator.source_info.span); } diff --git a/compiler/rustc_plugin_impl/src/load.rs b/compiler/rustc_plugin_impl/src/load.rs index 8e75e969ae0..27e5cb9f0d0 100644 --- a/compiler/rustc_plugin_impl/src/load.rs +++ b/compiler/rustc_plugin_impl/src/load.rs @@ -3,7 +3,7 @@ use crate::errors::{LoadPluginError, MalformedPluginAttribute}; use crate::Registry; use libloading::Library; -use rustc_ast::Crate; +use rustc_ast::Attribute; use rustc_metadata::locator; use rustc_session::cstore::MetadataLoader; use rustc_session::Session; @@ -20,11 +20,11 @@ type PluginRegistrarFn = fn(&mut Registry<'_>); pub fn load_plugins( sess: &Session, metadata_loader: &dyn MetadataLoader, - krate: &Crate, + attrs: &[Attribute], ) -> Vec<PluginRegistrarFn> { let mut plugins = Vec::new(); - for attr in &krate.attrs { + for attr in attrs { if !attr.has_name(sym::plugin) { continue; } diff --git a/compiler/rustc_privacy/src/lib.rs b/compiler/rustc_privacy/src/lib.rs index d884ebd9acc..3be0160d561 100644 --- a/compiler/rustc_privacy/src/lib.rs +++ b/compiler/rustc_privacy/src/lib.rs @@ -180,7 +180,7 @@ where | ty::PredicateKind::ConstEquate(_, _) | ty::PredicateKind::TypeWellFormedFromEnv(_) | ty::PredicateKind::Ambiguous - | ty::PredicateKind::AliasEq(_, _) => bug!("unexpected predicate: {:?}", predicate), + | ty::PredicateKind::AliasRelate(..) => bug!("unexpected predicate: {:?}", predicate), } } diff --git a/compiler/rustc_resolve/src/build_reduced_graph.rs b/compiler/rustc_resolve/src/build_reduced_graph.rs index f79807fee39..19ccb3a6484 100644 --- a/compiler/rustc_resolve/src/build_reduced_graph.rs +++ b/compiler/rustc_resolve/src/build_reduced_graph.rs @@ -27,7 +27,6 @@ use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID}; use rustc_metadata::creader::LoadedMacro; use rustc_middle::metadata::ModChild; use rustc_middle::{bug, ty}; -use rustc_session::cstore::CrateStore; use rustc_span::hygiene::{ExpnId, LocalExpnId, MacroKind}; use rustc_span::symbol::{kw, sym, Ident, Symbol}; use rustc_span::Span; @@ -115,34 +114,28 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } if !def_id.is_local() { - let def_kind = self.cstore().def_kind(def_id); - match def_kind { - DefKind::Mod | DefKind::Enum | DefKind::Trait => { - let def_key = self.cstore().def_key(def_id); - let parent = def_key.parent.map(|index| { - self.get_nearest_non_block_module(DefId { index, krate: def_id.krate }) - }); - let name = if let Some(cnum) = def_id.as_crate_root() { - self.cstore().crate_name(cnum) - } else { - def_key.disambiguated_data.data.get_opt_name().expect("module without name") - }; - - let expn_id = self.cstore().module_expansion_untracked(def_id, &self.tcx.sess); - Some(self.new_module( - parent, - ModuleKind::Def(def_kind, def_id, name), - expn_id, - self.def_span(def_id), - // FIXME: Account for `#[no_implicit_prelude]` attributes. - parent.map_or(false, |module| module.no_implicit_prelude), - )) - } - _ => None, + // Query `def_kind` is not used because query system overhead is too expensive here. + let def_kind = self.cstore().def_kind_untracked(def_id); + if let DefKind::Mod | DefKind::Enum | DefKind::Trait = def_kind { + let parent = self + .tcx + .opt_parent(def_id) + .map(|parent_id| self.get_nearest_non_block_module(parent_id)); + // Query `expn_that_defined` is not used because + // hashing spans in its result is expensive. + let expn_id = self.cstore().expn_that_defined_untracked(def_id, &self.tcx.sess); + return Some(self.new_module( + parent, + ModuleKind::Def(def_kind, def_id, self.tcx.item_name(def_id)), + expn_id, + self.def_span(def_id), + // FIXME: Account for `#[no_implicit_prelude]` attributes. + parent.map_or(false, |module| module.no_implicit_prelude), + )); } - } else { - None } + + None } pub(crate) fn expn_def_scope(&mut self, expn_id: ExpnId) -> Module<'a> { @@ -204,6 +197,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } pub(crate) fn build_reduced_graph_external(&mut self, module: Module<'a>) { + // Query `module_children` is not used because hashing spans in its result is expensive. let children = Vec::from_iter(self.cstore().module_children_untracked(module.def_id(), self.tcx.sess)); for child in children { diff --git a/compiler/rustc_resolve/src/check_unused.rs b/compiler/rustc_resolve/src/check_unused.rs index b2578e4c4b4..dbf6cec788b 100644 --- a/compiler/rustc_resolve/src/check_unused.rs +++ b/compiler/rustc_resolve/src/check_unused.rs @@ -32,9 +32,10 @@ use rustc_ast::visit::{self, Visitor}; use rustc_data_structures::fx::{FxHashMap, FxIndexMap}; use rustc_data_structures::unord::UnordSet; use rustc_errors::{pluralize, MultiSpan}; +use rustc_hir::def::{DefKind, Res}; use rustc_session::lint::builtin::{MACRO_USE_EXTERN_CRATE, UNUSED_EXTERN_CRATES, UNUSED_IMPORTS}; use rustc_session::lint::BuiltinLintDiagnostics; -use rustc_span::symbol::Ident; +use rustc_span::symbol::{kw, Ident}; use rustc_span::{Span, DUMMY_SP}; struct UnusedImport<'a> { @@ -58,6 +59,7 @@ struct UnusedImportCheckVisitor<'a, 'b, 'tcx> { base_use_tree: Option<&'a ast::UseTree>, base_id: ast::NodeId, item_span: Span, + base_use_is_pub: bool, } struct ExternCrateToLint { @@ -110,6 +112,35 @@ impl<'a, 'b, 'tcx> UnusedImportCheckVisitor<'a, 'b, 'tcx> { unused: Default::default(), }) } + + fn check_import_as_underscore(&mut self, item: &ast::UseTree, id: ast::NodeId) { + match item.kind { + ast::UseTreeKind::Simple(Some(ident)) => { + if ident.name == kw::Underscore + && !self + .r + .import_res_map + .get(&id) + .map(|per_ns| { + per_ns.iter().filter_map(|res| res.as_ref()).any(|res| { + matches!(res, Res::Def(DefKind::Trait | DefKind::TraitAlias, _)) + }) + }) + .unwrap_or(false) + { + self.unused_import(self.base_id).add(id); + } + } + ast::UseTreeKind::Nested(ref items) => self.check_imports_as_underscore(items), + _ => {} + } + } + + fn check_imports_as_underscore(&mut self, items: &[(ast::UseTree, ast::NodeId)]) { + for (item, id) in items { + self.check_import_as_underscore(item, *id); + } + } } impl<'a, 'b, 'tcx> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b, 'tcx> { @@ -119,7 +150,8 @@ impl<'a, 'b, 'tcx> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b, 'tcx> { // whether they're used or not. Also ignore imports with a dummy span // because this means that they were generated in some fashion by the // compiler and we don't need to consider them. - ast::ItemKind::Use(..) if item.vis.kind.is_pub() || item.span.is_dummy() => return, + ast::ItemKind::Use(..) if item.span.is_dummy() => return, + ast::ItemKind::Use(..) => self.base_use_is_pub = item.vis.kind.is_pub(), ast::ItemKind::ExternCrate(orig_name) => { self.extern_crate_items.push(ExternCrateToLint { id: item.id, @@ -146,6 +178,11 @@ impl<'a, 'b, 'tcx> Visitor<'a> for UnusedImportCheckVisitor<'a, 'b, 'tcx> { self.base_use_tree = Some(use_tree); } + if self.base_use_is_pub { + self.check_import_as_underscore(use_tree, id); + return; + } + if let ast::UseTreeKind::Nested(ref items) = use_tree.kind { if items.is_empty() { self.unused_import(self.base_id).add(id); @@ -300,6 +337,7 @@ impl Resolver<'_, '_> { base_use_tree: None, base_id: ast::DUMMY_NODE_ID, item_span: DUMMY_SP, + base_use_is_pub: false, }; visit::walk_crate(&mut visitor, krate); diff --git a/compiler/rustc_resolve/src/effective_visibilities.rs b/compiler/rustc_resolve/src/effective_visibilities.rs index 4bb252bfb29..a1ae9b8a521 100644 --- a/compiler/rustc_resolve/src/effective_visibilities.rs +++ b/compiler/rustc_resolve/src/effective_visibilities.rs @@ -4,6 +4,7 @@ use rustc_ast::visit; use rustc_ast::visit::Visitor; use rustc_ast::Crate; use rustc_ast::EnumDef; +use rustc_data_structures::fx::FxHashSet; use rustc_data_structures::intern::Interned; use rustc_hir::def_id::LocalDefId; use rustc_hir::def_id::CRATE_DEF_ID; @@ -70,11 +71,11 @@ impl Resolver<'_, '_> { impl<'r, 'a, 'tcx> EffectiveVisibilitiesVisitor<'r, 'a, 'tcx> { /// Fills the `Resolver::effective_visibilities` table with public & exported items /// For now, this doesn't resolve macros (FIXME) and cannot resolve Impl, as we - /// need access to a TyCtxt for that. + /// need access to a TyCtxt for that. Returns the set of ambiguous re-exports. pub(crate) fn compute_effective_visibilities<'c>( r: &'r mut Resolver<'a, 'tcx>, krate: &'c Crate, - ) { + ) -> FxHashSet<Interned<'a, NameBinding<'a>>> { let mut visitor = EffectiveVisibilitiesVisitor { r, def_effective_visibilities: Default::default(), @@ -93,18 +94,26 @@ impl<'r, 'a, 'tcx> EffectiveVisibilitiesVisitor<'r, 'a, 'tcx> { } visitor.r.effective_visibilities = visitor.def_effective_visibilities; + let mut exported_ambiguities = FxHashSet::default(); + // Update visibilities for import def ids. These are not used during the // `EffectiveVisibilitiesVisitor` pass, because we have more detailed binding-based // information, but are used by later passes. Effective visibility of an import def id // is the maximum value among visibilities of bindings corresponding to that def id. for (binding, eff_vis) in visitor.import_effective_visibilities.iter() { let NameBindingKind::Import { import, .. } = binding.kind else { unreachable!() }; - if let Some(node_id) = import.id() { - r.effective_visibilities.update_eff_vis(r.local_def_id(node_id), eff_vis, r.tcx) + if !binding.is_ambiguity() { + if let Some(node_id) = import.id() { + r.effective_visibilities.update_eff_vis(r.local_def_id(node_id), eff_vis, r.tcx) + } + } else if binding.ambiguity.is_some() && eff_vis.is_public_at_level(Level::Reexported) { + exported_ambiguities.insert(*binding); } } info!("resolve::effective_visibilities: {:#?}", r.effective_visibilities); + + exported_ambiguities } /// Update effective visibilities of bindings in the given module, @@ -115,21 +124,44 @@ impl<'r, 'a, 'tcx> EffectiveVisibilitiesVisitor<'r, 'a, 'tcx> { let resolutions = self.r.resolutions(module); for (_, name_resolution) in resolutions.borrow().iter() { - if let Some(mut binding) = name_resolution.borrow().binding() && !binding.is_ambiguity() { - // Set the given effective visibility level to `Level::Direct` and - // sets the rest of the `use` chain to `Level::Reexported` until - // we hit the actual exported item. - let mut parent_id = ParentId::Def(module_id); - while let NameBindingKind::Import { binding: nested_binding, .. } = binding.kind { - let binding_id = ImportId::new_unchecked(binding); - self.update_import(binding_id, parent_id); - - parent_id = ParentId::Import(binding_id); - binding = nested_binding; - } + if let Some(mut binding) = name_resolution.borrow().binding() { + if !binding.is_ambiguity() { + // Set the given effective visibility level to `Level::Direct` and + // sets the rest of the `use` chain to `Level::Reexported` until + // we hit the actual exported item. + let mut parent_id = ParentId::Def(module_id); + while let NameBindingKind::Import { binding: nested_binding, .. } = binding.kind + { + let binding_id = ImportId::new_unchecked(binding); + self.update_import(binding_id, parent_id); + + parent_id = ParentId::Import(binding_id); + binding = nested_binding; + } + + if let Some(def_id) = binding.res().opt_def_id().and_then(|id| id.as_local()) { + self.update_def(def_id, binding.vis.expect_local(), parent_id); + } + } else { + // Put the root ambiguity binding and all reexports leading to it into the + // table. They are used by the `ambiguous_glob_reexports` lint. For all + // bindings added to the table here `is_ambiguity` returns true. + let mut parent_id = ParentId::Def(module_id); + while let NameBindingKind::Import { binding: nested_binding, .. } = binding.kind + { + let binding_id = ImportId::new_unchecked(binding); + self.update_import(binding_id, parent_id); - if let Some(def_id) = binding.res().opt_def_id().and_then(|id| id.as_local()) { - self.update_def(def_id, binding.vis.expect_local(), parent_id); + if binding.ambiguity.is_some() { + // Stop at the root ambiguity, further bindings in the chain should not + // be reexported because the root ambiguity blocks any access to them. + // (Those further bindings are most likely not ambiguities themselves.) + break; + } + + parent_id = ParentId::Import(binding_id); + binding = nested_binding; + } } } } diff --git a/compiler/rustc_resolve/src/imports.rs b/compiler/rustc_resolve/src/imports.rs index 4d4bc1be349..bc17ce571a7 100644 --- a/compiler/rustc_resolve/src/imports.rs +++ b/compiler/rustc_resolve/src/imports.rs @@ -19,7 +19,9 @@ use rustc_hir::def::{self, DefKind, PartialRes}; use rustc_middle::metadata::ModChild; use rustc_middle::span_bug; use rustc_middle::ty; -use rustc_session::lint::builtin::{PUB_USE_OF_PRIVATE_EXTERN_CRATE, UNUSED_IMPORTS}; +use rustc_session::lint::builtin::{ + AMBIGUOUS_GLOB_REEXPORTS, PUB_USE_OF_PRIVATE_EXTERN_CRATE, UNUSED_IMPORTS, +}; use rustc_session::lint::BuiltinLintDiagnostics; use rustc_span::edit_distance::find_best_match_for_name; use rustc_span::hygiene::LocalExpnId; @@ -510,6 +512,34 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { } } + pub(crate) fn check_reexport_ambiguities( + &mut self, + exported_ambiguities: FxHashSet<Interned<'a, NameBinding<'a>>>, + ) { + for module in self.arenas.local_modules().iter() { + module.for_each_child(self, |this, ident, ns, binding| { + if let NameBindingKind::Import { import, .. } = binding.kind + && let Some((amb_binding, _)) = binding.ambiguity + && binding.res() != Res::Err + && exported_ambiguities.contains(&Interned::new_unchecked(binding)) + { + this.lint_buffer.buffer_lint_with_diagnostic( + AMBIGUOUS_GLOB_REEXPORTS, + import.root_id, + import.root_span, + "ambiguous glob re-exports", + BuiltinLintDiagnostics::AmbiguousGlobReexports { + name: ident.to_string(), + namespace: ns.descr().to_string(), + first_reexport_span: import.root_span, + duplicate_reexport_span: amb_binding.span, + }, + ); + } + }); + } + } + fn throw_unresolved_import_error(&self, errors: Vec<(&Import<'_>, UnresolvedImportError)>) { if errors.is_empty() { return; diff --git a/compiler/rustc_resolve/src/lib.rs b/compiler/rustc_resolve/src/lib.rs index a0b9188c315..0e84432a5b4 100644 --- a/compiler/rustc_resolve/src/lib.rs +++ b/compiler/rustc_resolve/src/lib.rs @@ -1168,7 +1168,7 @@ impl<'tcx> Resolver<'_, 'tcx> { if let Some(def_id) = def_id.as_local() { self.item_generics_num_lifetimes[&def_id] } else { - self.cstore().item_generics_num_lifetimes(def_id, self.tcx.sess) + self.tcx.generics_of(def_id).own_counts().lifetimes } } @@ -1180,7 +1180,8 @@ impl<'tcx> Resolver<'_, 'tcx> { impl<'a, 'tcx> Resolver<'a, 'tcx> { pub fn new( tcx: TyCtxt<'tcx>, - krate: &Crate, + attrs: &[ast::Attribute], + crate_span: Span, arenas: &'a ResolverArenas<'a>, ) -> Resolver<'a, 'tcx> { let root_def_id = CRATE_DEF_ID.to_def_id(); @@ -1189,8 +1190,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { None, ModuleKind::Def(DefKind::Mod, root_def_id, kw::Empty), ExpnId::root(), - krate.spans.inner_span, - attr::contains_name(&krate.attrs, sym::no_implicit_prelude), + crate_span, + attr::contains_name(attrs, sym::no_implicit_prelude), &mut module_map, ); let empty_module = arenas.new_module( @@ -1222,9 +1223,9 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { .map(|(name, _)| (Ident::from_str(name), Default::default())) .collect(); - if !attr::contains_name(&krate.attrs, sym::no_core) { + if !attr::contains_name(attrs, sym::no_core) { extern_prelude.insert(Ident::with_dummy_span(sym::core), Default::default()); - if !attr::contains_name(&krate.attrs, sym::no_std) { + if !attr::contains_name(attrs, sym::no_std) { extern_prelude.insert(Ident::with_dummy_span(sym::std), Default::default()); } } @@ -1474,9 +1475,12 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { pub fn resolve_crate(&mut self, krate: &Crate) { self.tcx.sess.time("resolve_crate", || { self.tcx.sess.time("finalize_imports", || self.finalize_imports()); - self.tcx.sess.time("compute_effective_visibilities", || { + let exported_ambiguities = self.tcx.sess.time("compute_effective_visibilities", || { EffectiveVisibilitiesVisitor::compute_effective_visibilities(self, krate) }); + self.tcx.sess.time("check_reexport_ambiguities", || { + self.check_reexport_ambiguities(exported_ambiguities) + }); self.tcx.sess.time("finalize_macro_resolutions", || self.finalize_macro_resolutions()); self.tcx.sess.time("late_resolve_crate", || self.late_resolve_crate(krate)); self.tcx.sess.time("resolve_main", || self.resolve_main()); @@ -1871,7 +1875,8 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { fn def_span(&self, def_id: DefId) -> Span { match def_id.as_local() { Some(def_id) => self.tcx.source_span(def_id), - None => self.cstore().get_span_untracked(def_id, self.tcx.sess), + // Query `def_span` is not used because hashing its result span is expensive. + None => self.cstore().def_span_untracked(def_id, self.tcx.sess), } } @@ -1906,10 +1911,7 @@ impl<'a, 'tcx> Resolver<'a, 'tcx> { return v.clone(); } - let attr = self - .cstore() - .item_attrs_untracked(def_id, self.tcx.sess) - .find(|a| a.has_name(sym::rustc_legacy_const_generics))?; + let attr = self.tcx.get_attr(def_id, sym::rustc_legacy_const_generics)?; let mut ret = Vec::new(); for meta in attr.meta_item_list()? { match meta.lit()?.kind { diff --git a/compiler/rustc_resolve/src/macros.rs b/compiler/rustc_resolve/src/macros.rs index c540682d8db..48707d37a10 100644 --- a/compiler/rustc_resolve/src/macros.rs +++ b/compiler/rustc_resolve/src/macros.rs @@ -112,8 +112,8 @@ fn fast_print_path(path: &ast::Path) -> Symbol { pub(crate) fn registered_tools(tcx: TyCtxt<'_>, (): ()) -> RegisteredTools { let mut registered_tools = RegisteredTools::default(); - let krate = tcx.crate_for_resolver(()).borrow(); - for attr in attr::filter_by_name(&krate.attrs, sym::register_tool) { + let (_, pre_configured_attrs) = &*tcx.crate_for_resolver(()).borrow(); + for attr in attr::filter_by_name(pre_configured_attrs, sym::register_tool) { for nested_meta in attr.meta_item_list().unwrap_or_default() { match nested_meta.ident() { Some(ident) => { diff --git a/compiler/rustc_session/src/filesearch.rs b/compiler/rustc_session/src/filesearch.rs index e734599cbfc..2404928b254 100644 --- a/compiler/rustc_session/src/filesearch.rs +++ b/compiler/rustc_session/src/filesearch.rs @@ -1,5 +1,6 @@ //! A module for searching for libraries +use rustc_fs_util::try_canonicalize; use smallvec::{smallvec, SmallVec}; use std::env; use std::fs; @@ -125,7 +126,7 @@ pub fn sysroot_candidates() -> SmallVec<[PathBuf; 2]> { let target = crate::config::host_triple(); let mut sysroot_candidates: SmallVec<[PathBuf; 2]> = smallvec![get_or_default_sysroot().expect("Failed finding sysroot")]; - let path = current_dll_path().and_then(|s| s.canonicalize().map_err(|e| e.to_string())); + let path = current_dll_path().and_then(|s| try_canonicalize(s).map_err(|e| e.to_string())); if let Ok(dll) = path { // use `parent` twice to chop off the file name and then also the // directory containing the dll which should be either `lib` or `bin`. @@ -160,7 +161,7 @@ pub fn sysroot_candidates() -> SmallVec<[PathBuf; 2]> { pub fn get_or_default_sysroot() -> Result<PathBuf, String> { // Follow symlinks. If the resolved path is relative, make it absolute. fn canonicalize(path: PathBuf) -> PathBuf { - let path = fs::canonicalize(&path).unwrap_or(path); + let path = try_canonicalize(&path).unwrap_or(path); // See comments on this target function, but the gist is that // gcc chokes on verbatim paths which fs::canonicalize generates // so we try to avoid those kinds of paths. diff --git a/compiler/rustc_session/src/options.rs b/compiler/rustc_session/src/options.rs index 0548379dc2f..c75af48e80a 100644 --- a/compiler/rustc_session/src/options.rs +++ b/compiler/rustc_session/src/options.rs @@ -4,6 +4,7 @@ use crate::early_error; use crate::lint; use crate::search_paths::SearchPath; use crate::utils::NativeLib; +use rustc_data_structures::profiling::TimePassesFormat; use rustc_errors::{LanguageIdentifier, TerminalUrl}; use rustc_target::spec::{CodeModel, LinkerFlavorCli, MergeFunctions, PanicStrategy, SanitizerSet}; use rustc_target::spec::{ @@ -365,6 +366,7 @@ mod desc { pub const parse_number: &str = "a number"; pub const parse_opt_number: &str = parse_number; pub const parse_threads: &str = parse_number; + pub const parse_time_passes_format: &str = "`text` (default) or `json`"; pub const parse_passes: &str = "a space-separated list of passes, or `all`"; pub const parse_panic_strategy: &str = "either `unwind` or `abort`"; pub const parse_opt_panic_strategy: &str = parse_panic_strategy; @@ -829,6 +831,21 @@ mod parse { true } + pub(crate) fn parse_time_passes_format(slot: &mut TimePassesFormat, v: Option<&str>) -> bool { + match v { + None => true, + Some("json") => { + *slot = TimePassesFormat::Json; + true + } + Some("text") => { + *slot = TimePassesFormat::Text; + true + } + Some(_) => false, + } + } + pub(crate) fn parse_dump_mono_stats(slot: &mut DumpMonoStatsFormat, v: Option<&str>) -> bool { match v { None => true, @@ -1709,6 +1726,8 @@ options! { "measure time of each LLVM pass (default: no)"), time_passes: bool = (false, parse_bool, [UNTRACKED], "measure time of each rustc pass (default: no)"), + time_passes_format: TimePassesFormat = (TimePassesFormat::Text, parse_time_passes_format, [UNTRACKED], + "the format to use for -Z time-passes (`text` (default) or `json`)"), tiny_const_eval_limit: bool = (false, parse_bool, [TRACKED], "sets a tiny, non-configurable limit for const eval; useful for compiler tests"), #[rustc_lint_opt_deny_field_access("use `Session::tls_model` instead of this field")] diff --git a/compiler/rustc_session/src/session.rs b/compiler/rustc_session/src/session.rs index 700a059c368..5730df9d5c6 100644 --- a/compiler/rustc_session/src/session.rs +++ b/compiler/rustc_session/src/session.rs @@ -1453,7 +1453,10 @@ pub fn build_session( CguReuseTracker::new_disabled() }; - let prof = SelfProfilerRef::new(self_profiler, sopts.unstable_opts.time_passes); + let prof = SelfProfilerRef::new( + self_profiler, + sopts.unstable_opts.time_passes.then(|| sopts.unstable_opts.time_passes_format), + ); let ctfe_backtrace = Lock::new(match env::var("RUSTC_CTFE_BACKTRACE") { Ok(ref val) if val == "immediate" => CtfeBacktrace::Immediate, diff --git a/compiler/rustc_session/src/utils.rs b/compiler/rustc_session/src/utils.rs index 3b3d4ca5d6b..1d15e2c28d8 100644 --- a/compiler/rustc_session/src/utils.rs +++ b/compiler/rustc_session/src/utils.rs @@ -1,5 +1,6 @@ use crate::session::Session; use rustc_data_structures::profiling::VerboseTimingGuard; +use rustc_fs_util::try_canonicalize; use std::path::{Path, PathBuf}; impl Session { @@ -98,7 +99,7 @@ pub struct CanonicalizedPath { impl CanonicalizedPath { pub fn new(path: &Path) -> Self { - Self { original: path.to_owned(), canonicalized: std::fs::canonicalize(path).ok() } + Self { original: path.to_owned(), canonicalized: try_canonicalize(path).ok() } } pub fn canonicalized(&self) -> &PathBuf { diff --git a/compiler/rustc_target/Cargo.toml b/compiler/rustc_target/Cargo.toml index 568c916a163..4e7a8d166ae 100644 --- a/compiler/rustc_target/Cargo.toml +++ b/compiler/rustc_target/Cargo.toml @@ -7,6 +7,7 @@ edition = "2021" bitflags = "1.2.1" tracing = "0.1" serde_json = "1.0.59" +rustc_fs_util = { path = "../rustc_fs_util" } rustc_abi = { path = "../rustc_abi" } rustc_data_structures = { path = "../rustc_data_structures" } rustc_feature = { path = "../rustc_feature" } diff --git a/compiler/rustc_target/src/spec/mod.rs b/compiler/rustc_target/src/spec/mod.rs index f3304e91429..2553b11d878 100644 --- a/compiler/rustc_target/src/spec/mod.rs +++ b/compiler/rustc_target/src/spec/mod.rs @@ -40,6 +40,7 @@ use crate::json::{Json, ToJson}; use crate::spec::abi::{lookup as lookup_abi, Abi}; use crate::spec::crt_objects::{CrtObjects, LinkSelfContainedDefault}; use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; +use rustc_fs_util::try_canonicalize; use rustc_serialize::{Decodable, Decoder, Encodable, Encoder}; use rustc_span::symbol::{sym, Symbol}; use serde_json::Value; @@ -2949,7 +2950,7 @@ impl TargetTriple { /// Creates a target triple from the passed target path. pub fn from_path(path: &Path) -> Result<Self, io::Error> { - let canonicalized_path = path.canonicalize()?; + let canonicalized_path = try_canonicalize(path)?; let contents = std::fs::read_to_string(&canonicalized_path).map_err(|err| { io::Error::new( io::ErrorKind::InvalidInput, diff --git a/compiler/rustc_trait_selection/src/solve/canonical/mod.rs b/compiler/rustc_trait_selection/src/solve/canonical/mod.rs index 9d45e78ebab..efecaf33ef9 100644 --- a/compiler/rustc_trait_selection/src/solve/canonical/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/canonical/mod.rs @@ -99,20 +99,20 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { param_env: ty::ParamEnv<'tcx>, original_values: Vec<ty::GenericArg<'tcx>>, response: CanonicalResponse<'tcx>, - ) -> Result<Certainty, NoSolution> { + ) -> Result<(Certainty, Vec<Goal<'tcx, ty::Predicate<'tcx>>>), NoSolution> { let substitution = self.compute_query_response_substitution(&original_values, &response); let Response { var_values, external_constraints, certainty } = response.substitute(self.tcx(), &substitution); - self.unify_query_var_values(param_env, &original_values, var_values)?; + let nested_goals = self.unify_query_var_values(param_env, &original_values, var_values)?; // FIXME: implement external constraints. let ExternalConstraintsData { region_constraints, opaque_types: _ } = external_constraints.deref(); self.register_region_constraints(region_constraints); - Ok(certainty) + Ok((certainty, nested_goals)) } /// This returns the substitutions to instantiate the bound variables of @@ -205,21 +205,15 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { param_env: ty::ParamEnv<'tcx>, original_values: &[ty::GenericArg<'tcx>], var_values: CanonicalVarValues<'tcx>, - ) -> Result<(), NoSolution> { + ) -> Result<Vec<Goal<'tcx, ty::Predicate<'tcx>>>, NoSolution> { assert_eq!(original_values.len(), var_values.len()); + + let mut nested_goals = vec![]; for (&orig, response) in iter::zip(original_values, var_values.var_values) { - // This can fail due to the occurs check, see - // `tests/ui/typeck/lazy-norm/equating-projection-cyclically.rs` for an example - // where that can happen. - // - // FIXME: To deal with #105787 I also expect us to emit nested obligations here at - // some point. We can figure out how to deal with this once we actually have - // an ICE. - let nested_goals = self.eq_and_get_goals(param_env, orig, response)?; - assert!(nested_goals.is_empty(), "{nested_goals:?}"); + nested_goals.extend(self.eq_and_get_goals(param_env, orig, response)?); } - Ok(()) + Ok(nested_goals) } fn register_region_constraints(&mut self, region_constraints: &QueryRegionConstraints<'tcx>) { diff --git a/compiler/rustc_trait_selection/src/solve/eval_ctxt.rs b/compiler/rustc_trait_selection/src/solve/eval_ctxt.rs index c492c8c0aea..e47b5ae21b5 100644 --- a/compiler/rustc_trait_selection/src/solve/eval_ctxt.rs +++ b/compiler/rustc_trait_selection/src/solve/eval_ctxt.rs @@ -70,7 +70,7 @@ pub trait InferCtxtEvalExt<'tcx> { fn evaluate_root_goal( &self, goal: Goal<'tcx, ty::Predicate<'tcx>>, - ) -> Result<(bool, Certainty), NoSolution>; + ) -> Result<(bool, Certainty, Vec<Goal<'tcx, ty::Predicate<'tcx>>>), NoSolution>; } impl<'tcx> InferCtxtEvalExt<'tcx> for InferCtxt<'tcx> { @@ -78,9 +78,8 @@ impl<'tcx> InferCtxtEvalExt<'tcx> for InferCtxt<'tcx> { fn evaluate_root_goal( &self, goal: Goal<'tcx, ty::Predicate<'tcx>>, - ) -> Result<(bool, Certainty), NoSolution> { + ) -> Result<(bool, Certainty, Vec<Goal<'tcx, ty::Predicate<'tcx>>>), NoSolution> { let mode = if self.intercrate { SolverMode::Coherence } else { SolverMode::Normal }; - let mut search_graph = search_graph::SearchGraph::new(self.tcx, mode); let mut ecx = EvalCtxt { @@ -152,13 +151,13 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { &mut self, is_normalizes_to_hack: IsNormalizesToHack, goal: Goal<'tcx, ty::Predicate<'tcx>>, - ) -> Result<(bool, Certainty), NoSolution> { + ) -> Result<(bool, Certainty, Vec<Goal<'tcx, ty::Predicate<'tcx>>>), NoSolution> { let (orig_values, canonical_goal) = self.canonicalize_goal(goal); let canonical_response = EvalCtxt::evaluate_canonical_goal(self.tcx(), self.search_graph, canonical_goal)?; let has_changed = !canonical_response.value.var_values.is_identity(); - let certainty = self.instantiate_and_apply_query_response( + let (certainty, nested_goals) = self.instantiate_and_apply_query_response( goal.param_env, orig_values, canonical_response, @@ -186,7 +185,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { assert_eq!(certainty, canonical_response.value.certainty); } - Ok((has_changed, certainty)) + Ok((has_changed, certainty, nested_goals)) } fn compute_goal(&mut self, goal: Goal<'tcx, ty::Predicate<'tcx>>) -> QueryResult<'tcx> { @@ -236,9 +235,11 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { ty::PredicateKind::TypeWellFormedFromEnv(..) => { bug!("TypeWellFormedFromEnv is only used for Chalk") } - ty::PredicateKind::AliasEq(lhs, rhs) => { - self.compute_alias_eq_goal(Goal { param_env, predicate: (lhs, rhs) }) - } + ty::PredicateKind::AliasRelate(lhs, rhs, direction) => self + .compute_alias_relate_goal(Goal { + param_env, + predicate: (lhs, rhs, direction), + }), } } else { let kind = self.infcx.instantiate_binder_with_placeholders(kind); @@ -261,13 +262,14 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { let mut has_changed = Err(Certainty::Yes); if let Some(goal) = goals.normalizes_to_hack_goal.take() { - let (_, certainty) = match this.evaluate_goal( + let (_, certainty, nested_goals) = match this.evaluate_goal( IsNormalizesToHack::Yes, goal.with(this.tcx(), ty::Binder::dummy(goal.predicate)), ) { Ok(r) => r, Err(NoSolution) => return Some(Err(NoSolution)), }; + new_goals.goals.extend(nested_goals); if goal.predicate.projection_ty != this.resolve_vars_if_possible(goal.predicate.projection_ty) @@ -306,11 +308,12 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { } for nested_goal in goals.goals.drain(..) { - let (changed, certainty) = + let (changed, certainty, nested_goals) = match this.evaluate_goal(IsNormalizesToHack::No, nested_goal) { Ok(result) => result, Err(NoSolution) => return Some(Err(NoSolution)), }; + new_goals.goals.extend(nested_goals); if changed { has_changed = Ok(()); @@ -470,6 +473,25 @@ impl<'tcx> EvalCtxt<'_, 'tcx> { }) } + #[instrument(level = "debug", skip(self, param_env), ret)] + pub(super) fn sub<T: ToTrace<'tcx>>( + &mut self, + param_env: ty::ParamEnv<'tcx>, + sub: T, + sup: T, + ) -> Result<(), NoSolution> { + self.infcx + .at(&ObligationCause::dummy(), param_env) + .sub(DefineOpaqueTypes::No, sub, sup) + .map(|InferOk { value: (), obligations }| { + self.add_goals(obligations.into_iter().map(|o| o.into())); + }) + .map_err(|e| { + debug!(?e, "failed to subtype"); + NoSolution + }) + } + /// Equates two values returning the nested goals without adding them /// to the nested goals of the `EvalCtxt`. /// diff --git a/compiler/rustc_trait_selection/src/solve/fulfill.rs b/compiler/rustc_trait_selection/src/solve/fulfill.rs index 38120b9760f..76a2a587911 100644 --- a/compiler/rustc_trait_selection/src/solve/fulfill.rs +++ b/compiler/rustc_trait_selection/src/solve/fulfill.rs @@ -1,6 +1,7 @@ use std::mem; use rustc_infer::infer::InferCtxt; +use rustc_infer::traits::Obligation; use rustc_infer::traits::{ query::NoSolution, FulfillmentError, FulfillmentErrorCode, MismatchedProjectionTypes, PredicateObligation, SelectionError, TraitEngine, @@ -61,7 +62,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> { let mut has_changed = false; for obligation in mem::take(&mut self.obligations) { let goal = obligation.clone().into(); - let (changed, certainty) = match infcx.evaluate_root_goal(goal) { + let (changed, certainty, nested_goals) = match infcx.evaluate_root_goal(goal) { Ok(result) => result, Err(NoSolution) => { errors.push(FulfillmentError { @@ -73,7 +74,7 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> { MismatchedProjectionTypes { err: TypeError::Mismatch }, ) } - ty::PredicateKind::AliasEq(_, _) => { + ty::PredicateKind::AliasRelate(_, _, _) => { FulfillmentErrorCode::CodeProjectionError( MismatchedProjectionTypes { err: TypeError::Mismatch }, ) @@ -125,7 +126,16 @@ impl<'tcx> TraitEngine<'tcx> for FulfillmentCtxt<'tcx> { continue; } }; - + // Push any nested goals that we get from unifying our canonical response + // with our obligation onto the fulfillment context. + self.obligations.extend(nested_goals.into_iter().map(|goal| { + Obligation::new( + infcx.tcx, + obligation.cause.clone(), + goal.param_env, + goal.predicate, + ) + })); has_changed |= changed; match certainty { Certainty::Yes => {} diff --git a/compiler/rustc_trait_selection/src/solve/mod.rs b/compiler/rustc_trait_selection/src/solve/mod.rs index 89f4056a58d..6a64dfdedd4 100644 --- a/compiler/rustc_trait_selection/src/solve/mod.rs +++ b/compiler/rustc_trait_selection/src/solve/mod.rs @@ -13,7 +13,6 @@ use rustc_hir::def_id::DefId; use rustc_infer::infer::canonical::{Canonical, CanonicalVarValues}; -use rustc_infer::infer::{DefineOpaqueTypes, InferOk}; use rustc_infer::traits::query::NoSolution; use rustc_middle::traits::solve::{ CanonicalGoal, CanonicalResponse, Certainty, ExternalConstraints, ExternalConstraintsData, @@ -110,11 +109,7 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { // That won't actually reflect in the query response, so it seems moot. self.evaluate_added_goals_and_make_canonical_response(Certainty::AMBIGUOUS) } else { - let InferOk { value: (), obligations } = self - .infcx - .at(&ObligationCause::dummy(), goal.param_env) - .sub(DefineOpaqueTypes::No, goal.predicate.a, goal.predicate.b)?; - self.add_goals(obligations.into_iter().map(|pred| pred.into())); + self.sub(goal.param_env, goal.predicate.a, goal.predicate.b)?; self.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) } } @@ -165,55 +160,94 @@ impl<'a, 'tcx> EvalCtxt<'a, 'tcx> { } #[instrument(level = "debug", skip(self), ret)] - fn compute_alias_eq_goal( + fn compute_alias_relate_goal( &mut self, - goal: Goal<'tcx, (ty::Term<'tcx>, ty::Term<'tcx>)>, + goal: Goal<'tcx, (ty::Term<'tcx>, ty::Term<'tcx>, ty::AliasRelationDirection)>, ) -> QueryResult<'tcx> { let tcx = self.tcx(); + // We may need to invert the alias relation direction if dealing an alias on the RHS. + enum Invert { + No, + Yes, + } + let evaluate_normalizes_to = + |ecx: &mut EvalCtxt<'_, 'tcx>, alias, other, direction, invert| { + debug!("evaluate_normalizes_to(alias={:?}, other={:?})", alias, other); + let result = ecx.probe(|ecx| { + let other = match direction { + // This is purely an optimization. + ty::AliasRelationDirection::Equate => other, + + ty::AliasRelationDirection::Subtype => { + let fresh = ecx.next_term_infer_of_kind(other); + let (sub, sup) = match invert { + Invert::No => (fresh, other), + Invert::Yes => (other, fresh), + }; + ecx.sub(goal.param_env, sub, sup)?; + fresh + } + }; + ecx.add_goal(goal.with( + tcx, + ty::Binder::dummy(ty::ProjectionPredicate { + projection_ty: alias, + term: other, + }), + )); + ecx.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) + }); + debug!("evaluate_normalizes_to({alias}, {other}, {direction:?}) -> {result:?}"); + result + }; - let evaluate_normalizes_to = |ecx: &mut EvalCtxt<'_, 'tcx>, alias, other| { - debug!("evaluate_normalizes_to(alias={:?}, other={:?})", alias, other); - let r = ecx.probe(|ecx| { - ecx.add_goal(goal.with( - tcx, - ty::Binder::dummy(ty::ProjectionPredicate { - projection_ty: alias, - term: other, - }), - )); - ecx.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) - }); - debug!("evaluate_normalizes_to(..) -> {:?}", r); - r - }; + let (lhs, rhs, direction) = goal.predicate; - if goal.predicate.0.is_infer() || goal.predicate.1.is_infer() { + if lhs.is_infer() || rhs.is_infer() { bug!( - "`AliasEq` goal with an infer var on lhs or rhs which should have been instantiated" + "`AliasRelate` goal with an infer var on lhs or rhs which should have been instantiated" ); } - match ( - goal.predicate.0.to_alias_term_no_opaque(tcx), - goal.predicate.1.to_alias_term_no_opaque(tcx), - ) { - (None, None) => bug!("`AliasEq` goal without an alias on either lhs or rhs"), - (Some(alias), None) => evaluate_normalizes_to(self, alias, goal.predicate.1), - (None, Some(alias)) => evaluate_normalizes_to(self, alias, goal.predicate.0), - (Some(alias_lhs), Some(alias_rhs)) => { - debug!("compute_alias_eq_goal: both sides are aliases"); + match (lhs.to_projection_term(tcx), rhs.to_projection_term(tcx)) { + (None, None) => bug!("`AliasRelate` goal without an alias on either lhs or rhs"), - let mut candidates = Vec::with_capacity(3); + // RHS is not a projection, only way this is true is if LHS normalizes-to RHS + (Some(alias_lhs), None) => { + evaluate_normalizes_to(self, alias_lhs, rhs, direction, Invert::No) + } - // Evaluate all 3 potential candidates for the alias' being equal - candidates.push(evaluate_normalizes_to(self, alias_lhs, goal.predicate.1)); - candidates.push(evaluate_normalizes_to(self, alias_rhs, goal.predicate.0)); - candidates.push(self.probe(|ecx| { - debug!("compute_alias_eq_goal: alias defids are equal, equating substs"); - ecx.eq(goal.param_env, alias_lhs, alias_rhs)?; - ecx.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) - })); + // LHS is not a projection, only way this is true is if RHS normalizes-to LHS + (None, Some(alias_rhs)) => { + evaluate_normalizes_to(self, alias_rhs, lhs, direction, Invert::Yes) + } + (Some(alias_lhs), Some(alias_rhs)) => { + debug!("compute_alias_relate_goal: both sides are aliases"); + + let candidates = vec![ + // LHS normalizes-to RHS + evaluate_normalizes_to(self, alias_lhs, rhs, direction, Invert::No), + // RHS normalizes-to RHS + evaluate_normalizes_to(self, alias_rhs, lhs, direction, Invert::Yes), + // Relate via substs + self.probe(|ecx| { + debug!( + "compute_alias_relate_goal: alias defids are equal, equating substs" + ); + + match direction { + ty::AliasRelationDirection::Equate => { + ecx.eq(goal.param_env, alias_lhs, alias_rhs)?; + } + ty::AliasRelationDirection::Subtype => { + ecx.sub(goal.param_env, alias_lhs, alias_rhs)?; + } + } + + ecx.evaluate_added_goals_and_make_canonical_response(Certainty::Yes) + }), + ]; debug!(?candidates); self.try_merge_responses(candidates.into_iter()) diff --git a/compiler/rustc_trait_selection/src/traits/auto_trait.rs b/compiler/rustc_trait_selection/src/traits/auto_trait.rs index dbf6775afc2..6b3a59b1ed5 100644 --- a/compiler/rustc_trait_selection/src/traits/auto_trait.rs +++ b/compiler/rustc_trait_selection/src/traits/auto_trait.rs @@ -832,7 +832,7 @@ impl<'tcx> AutoTraitFinder<'tcx> { // the `ParamEnv`. ty::PredicateKind::WellFormed(..) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ObjectSafe(..) | ty::PredicateKind::ClosureKind(..) | ty::PredicateKind::Subtype(..) diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs index 1174efdbfa8..13607b9079a 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/method_chain.rs @@ -92,6 +92,11 @@ impl<'a, 'tcx> TypeRelation<'tcx> for CollectAllMismatches<'a, 'tcx> { } impl<'tcx> ObligationEmittingRelation<'tcx> for CollectAllMismatches<'_, 'tcx> { + fn alias_relate_direction(&self) -> ty::AliasRelationDirection { + // FIXME(deferred_projection_equality): We really should get rid of this relation. + ty::AliasRelationDirection::Equate + } + fn register_obligations(&mut self, _obligations: PredicateObligations<'tcx>) { // FIXME(deferred_projection_equality) } diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs index 41ffaeeac1c..296fd1ed524 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs @@ -1276,16 +1276,26 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { "TypeWellFormedFromEnv predicate should only exist in the environment" ), - ty::PredicateKind::AliasEq(..) => span_bug!( + ty::PredicateKind::AliasRelate(..) => span_bug!( span, - "AliasEq predicate should never be the predicate cause of a SelectionError" + "AliasRelate predicate should never be the predicate cause of a SelectionError" ), ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(ct, ty)) => { - self.tcx.sess.struct_span_err( + let mut diag = self.tcx.sess.struct_span_err( span, &format!("the constant `{}` is not of type `{}`", ct, ty), - ) + ); + self.note_type_err( + &mut diag, + &obligation.cause, + None, + None, + TypeError::Sorts(ty::error::ExpectedFound::new(true, ty, ct.ty())), + false, + false, + ); + diag } } } 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 af108ab6f30..be0817472ea 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/suggestions.rs @@ -1356,6 +1356,31 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { Applicability::MaybeIncorrect, ); } else { + let is_mut = mut_ref_self_ty_satisfies_pred || ref_inner_ty_mut; + let sugg_prefix = format!("&{}", if is_mut { "mut " } else { "" }); + let sugg_msg = &format!( + "consider{} borrowing here", + if is_mut { " mutably" } else { "" } + ); + + // Issue #109436, we need to add parentheses properly for method calls + // for example, `foo.into()` should be `(&foo).into()` + if let Ok(snippet) = self.tcx.sess.source_map().span_to_snippet( + self.tcx.sess.source_map().span_look_ahead(span, Some("."), Some(50)), + ) { + if snippet == "." { + err.multipart_suggestion_verbose( + sugg_msg, + vec![ + (span.shrink_to_lo(), format!("({}", sugg_prefix)), + (span.shrink_to_hi(), ")".to_string()), + ], + Applicability::MaybeIncorrect, + ); + return true; + } + } + // Issue #104961, we need to add parentheses properly for compond expressions // for example, `x.starts_with("hi".to_string() + "you")` // should be `x.starts_with(&("hi".to_string() + "you"))` @@ -1372,14 +1397,7 @@ impl<'tcx> TypeErrCtxtExt<'tcx> for TypeErrCtxt<'_, 'tcx> { _ => false, }; - let is_mut = mut_ref_self_ty_satisfies_pred || ref_inner_ty_mut; let span = if needs_parens { span } else { span.shrink_to_lo() }; - let sugg_prefix = format!("&{}", if is_mut { "mut " } else { "" }); - let sugg_msg = &format!( - "consider{} borrowing here", - if is_mut { " mutably" } else { "" } - ); - let suggestions = if !needs_parens { vec![(span.shrink_to_lo(), format!("{}", sugg_prefix))] } else { diff --git a/compiler/rustc_trait_selection/src/traits/fulfill.rs b/compiler/rustc_trait_selection/src/traits/fulfill.rs index 23754480fcf..07e31e87bfb 100644 --- a/compiler/rustc_trait_selection/src/traits/fulfill.rs +++ b/compiler/rustc_trait_selection/src/traits/fulfill.rs @@ -361,8 +361,8 @@ impl<'a, 'tcx> ObligationProcessor for FulfillProcessor<'a, 'tcx> { ty::PredicateKind::TypeWellFormedFromEnv(..) => { bug!("TypeWellFormedFromEnv is only used for Chalk") } - ty::PredicateKind::AliasEq(..) => { - bug!("AliasEq is only used for new solver") + ty::PredicateKind::AliasRelate(..) => { + bug!("AliasRelate is only used for new solver") } }, Some(pred) => match pred { @@ -630,8 +630,8 @@ impl<'a, 'tcx> ObligationProcessor for FulfillProcessor<'a, 'tcx> { ty::PredicateKind::TypeWellFormedFromEnv(..) => { bug!("TypeWellFormedFromEnv is only used for Chalk") } - ty::PredicateKind::AliasEq(..) => { - bug!("AliasEq is only used for new solver") + ty::PredicateKind::AliasRelate(..) => { + bug!("AliasRelate is only used for new solver") } ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(ct, ty)) => { match self.selcx.infcx.at(&obligation.cause, obligation.param_env).eq( diff --git a/compiler/rustc_trait_selection/src/traits/object_safety.rs b/compiler/rustc_trait_selection/src/traits/object_safety.rs index 038f8964471..5d2af5ff33c 100644 --- a/compiler/rustc_trait_selection/src/traits/object_safety.rs +++ b/compiler/rustc_trait_selection/src/traits/object_safety.rs @@ -335,7 +335,7 @@ fn predicate_references_self<'tcx>( has_self_ty(&ty.into()).then_some(sp) } - ty::PredicateKind::AliasEq(..) => bug!("`AliasEq` not allowed as assumption"), + ty::PredicateKind::AliasRelate(..) => bug!("`AliasRelate` not allowed as assumption"), ty::PredicateKind::WellFormed(..) | ty::PredicateKind::ObjectSafe(..) @@ -395,7 +395,7 @@ fn generics_require_sized_self(tcx: TyCtxt<'_>, def_id: DefId) -> bool { | ty::PredicateKind::Clause(ty::Clause::TypeOutlives(..)) | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::ConstEquate(..) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::Ambiguous | ty::PredicateKind::TypeWellFormedFromEnv(..) => false, } diff --git a/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs b/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs index f84b2f4428d..edbe2de8105 100644 --- a/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs +++ b/compiler/rustc_trait_selection/src/traits/query/evaluate_obligation.rs @@ -1,9 +1,8 @@ -use rustc_middle::traits::solve::{Certainty, Goal, MaybeCause}; +use rustc_infer::traits::{TraitEngine, TraitEngineExt}; use rustc_middle::ty; use crate::infer::canonical::OriginalQueryValues; use crate::infer::InferCtxt; -use crate::solve::InferCtxtEvalExt; use crate::traits::{EvaluationResult, OverflowError, PredicateObligation, SelectionContext}; pub trait InferCtxtExt<'tcx> { @@ -81,27 +80,20 @@ impl<'tcx> InferCtxtExt<'tcx> for InferCtxt<'tcx> { if self.tcx.trait_solver_next() { self.probe(|snapshot| { - if let Ok((_, certainty)) = - self.evaluate_root_goal(Goal::new(self.tcx, param_env, obligation.predicate)) - { - match certainty { - Certainty::Yes => { - if self.opaque_types_added_in_snapshot(snapshot) { - Ok(EvaluationResult::EvaluatedToOkModuloOpaqueTypes) - } else if self.region_constraints_added_in_snapshot(snapshot).is_some() - { - Ok(EvaluationResult::EvaluatedToOkModuloRegions) - } else { - Ok(EvaluationResult::EvaluatedToOk) - } - } - Certainty::Maybe(MaybeCause::Ambiguity) => { - Ok(EvaluationResult::EvaluatedToAmbig) - } - Certainty::Maybe(MaybeCause::Overflow) => Err(OverflowError::Canonical), - } - } else { + let mut fulfill_cx = crate::solve::FulfillmentCtxt::new(); + fulfill_cx.register_predicate_obligation(self, obligation.clone()); + // True errors + // FIXME(-Ztrait-solver=next): Overflows are reported as ambig here, is that OK? + if !fulfill_cx.select_where_possible(self).is_empty() { Ok(EvaluationResult::EvaluatedToErr) + } else if !fulfill_cx.select_all_or_error(self).is_empty() { + Ok(EvaluationResult::EvaluatedToAmbig) + } else if self.opaque_types_added_in_snapshot(snapshot) { + Ok(EvaluationResult::EvaluatedToOkModuloOpaqueTypes) + } else if self.region_constraints_added_in_snapshot(snapshot).is_some() { + Ok(EvaluationResult::EvaluatedToOkModuloRegions) + } else { + Ok(EvaluationResult::EvaluatedToOk) } }) } else { diff --git a/compiler/rustc_trait_selection/src/traits/select/mod.rs b/compiler/rustc_trait_selection/src/traits/select/mod.rs index b8758ad9323..4f429f018ed 100644 --- a/compiler/rustc_trait_selection/src/traits/select/mod.rs +++ b/compiler/rustc_trait_selection/src/traits/select/mod.rs @@ -618,6 +618,7 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { let mut fulfill_cx = crate::solve::FulfillmentCtxt::new(); fulfill_cx.register_predicate_obligations(self.infcx, predicates); // True errors + // FIXME(-Ztrait-solver=next): Overflows are reported as ambig here, is that OK? if !fulfill_cx.select_where_possible(self.infcx).is_empty() { return Ok(EvaluatedToErr); } @@ -977,8 +978,8 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> { ty::PredicateKind::TypeWellFormedFromEnv(..) => { bug!("TypeWellFormedFromEnv is only used for chalk") } - ty::PredicateKind::AliasEq(..) => { - bug!("AliasEq is only used for new solver") + ty::PredicateKind::AliasRelate(..) => { + bug!("AliasRelate is only used for new solver") } ty::PredicateKind::Ambiguous => Ok(EvaluatedToAmbig), ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(ct, ty)) => { diff --git a/compiler/rustc_trait_selection/src/traits/specialize/specialization_graph.rs b/compiler/rustc_trait_selection/src/traits/specialize/specialization_graph.rs index cd665d9471d..11eb968a415 100644 --- a/compiler/rustc_trait_selection/src/traits/specialize/specialization_graph.rs +++ b/compiler/rustc_trait_selection/src/traits/specialize/specialization_graph.rs @@ -3,7 +3,7 @@ use super::OverlapError; use crate::traits; use rustc_errors::ErrorGuaranteed; use rustc_hir::def_id::DefId; -use rustc_middle::ty::fast_reject::{self, SimplifiedType, TreatParams, TreatProjections}; +use rustc_middle::ty::fast_reject::{self, SimplifiedType, TreatParams}; use rustc_middle::ty::{self, TyCtxt, TypeVisitableExt}; pub use rustc_middle::traits::specialization_graph::*; @@ -49,12 +49,9 @@ impl<'tcx> ChildrenExt<'tcx> for Children { /// Insert an impl into this set of children without comparing to any existing impls. fn insert_blindly(&mut self, tcx: TyCtxt<'tcx>, impl_def_id: DefId) { let trait_ref = tcx.impl_trait_ref(impl_def_id).unwrap().skip_binder(); - if let Some(st) = fast_reject::simplify_type( - tcx, - trait_ref.self_ty(), - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ) { + if let Some(st) = + fast_reject::simplify_type(tcx, trait_ref.self_ty(), TreatParams::AsCandidateKey) + { debug!("insert_blindly: impl_def_id={:?} st={:?}", impl_def_id, st); self.non_blanket_impls.entry(st).or_default().push(impl_def_id) } else { @@ -69,12 +66,9 @@ impl<'tcx> ChildrenExt<'tcx> for Children { fn remove_existing(&mut self, tcx: TyCtxt<'tcx>, impl_def_id: DefId) { let trait_ref = tcx.impl_trait_ref(impl_def_id).unwrap().skip_binder(); let vec: &mut Vec<DefId>; - if let Some(st) = fast_reject::simplify_type( - tcx, - trait_ref.self_ty(), - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ) { + if let Some(st) = + fast_reject::simplify_type(tcx, trait_ref.self_ty(), TreatParams::AsCandidateKey) + { debug!("remove_existing: impl_def_id={:?} st={:?}", impl_def_id, st); vec = self.non_blanket_impls.get_mut(&st).unwrap(); } else { @@ -310,12 +304,8 @@ impl<'tcx> GraphExt<'tcx> for Graph { let mut parent = trait_def_id; let mut last_lint = None; - let simplified = fast_reject::simplify_type( - tcx, - trait_ref.self_ty(), - TreatParams::AsCandidateKey, - TreatProjections::AsCandidateKey, - ); + let simplified = + fast_reject::simplify_type(tcx, trait_ref.self_ty(), TreatParams::AsCandidateKey); // Descend the specialization tree, where `parent` is the current parent node. loop { diff --git a/compiler/rustc_trait_selection/src/traits/wf.rs b/compiler/rustc_trait_selection/src/traits/wf.rs index d498af359c5..ec5bd982a3c 100644 --- a/compiler/rustc_trait_selection/src/traits/wf.rs +++ b/compiler/rustc_trait_selection/src/traits/wf.rs @@ -191,8 +191,8 @@ pub fn predicate_obligations<'tcx>( ty::PredicateKind::TypeWellFormedFromEnv(..) => { bug!("TypeWellFormedFromEnv is only used for Chalk") } - ty::PredicateKind::AliasEq(..) => { - bug!("We should only wf check where clauses and `AliasEq` is not a `Clause`") + ty::PredicateKind::AliasRelate(..) => { + bug!("We should only wf check where clauses and `AliasRelate` is not a `Clause`") } } @@ -936,7 +936,7 @@ pub(crate) fn required_region_bounds<'tcx>( | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::ConstEquate(..) | ty::PredicateKind::Ambiguous - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::TypeWellFormedFromEnv(..) => None, ty::PredicateKind::Clause(ty::Clause::TypeOutlives(ty::OutlivesPredicate( ref t, diff --git a/compiler/rustc_traits/src/chalk/lowering.rs b/compiler/rustc_traits/src/chalk/lowering.rs index 60e22d1001c..0e9bccba8d4 100644 --- a/compiler/rustc_traits/src/chalk/lowering.rs +++ b/compiler/rustc_traits/src/chalk/lowering.rs @@ -119,7 +119,7 @@ impl<'tcx> LowerInto<'tcx, chalk_ir::InEnvironment<chalk_ir::Goal<RustInterner<' }, ty::PredicateKind::ObjectSafe(..) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ClosureKind(..) | ty::PredicateKind::Subtype(..) | ty::PredicateKind::Coerce(..) @@ -215,7 +215,7 @@ impl<'tcx> LowerInto<'tcx, chalk_ir::GoalData<RustInterner<'tcx>>> for ty::Predi // some of these in terms of chalk operations. ty::PredicateKind::ClosureKind(..) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::Coerce(..) | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::Ambiguous @@ -652,7 +652,7 @@ impl<'tcx> LowerInto<'tcx, Option<chalk_ir::QuantifiedWhereClause<RustInterner<' ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) => None, ty::PredicateKind::ObjectSafe(..) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ClosureKind(..) | ty::PredicateKind::Subtype(..) | ty::PredicateKind::Coerce(..) @@ -787,7 +787,7 @@ impl<'tcx> LowerInto<'tcx, Option<chalk_solve::rust_ir::QuantifiedInlineBound<Ru ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) => None, ty::PredicateKind::Clause(ty::Clause::RegionOutlives(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::ObjectSafe(..) | ty::PredicateKind::ClosureKind(..) | ty::PredicateKind::Subtype(..) diff --git a/compiler/rustc_traits/src/implied_outlives_bounds.rs b/compiler/rustc_traits/src/implied_outlives_bounds.rs index ddd4ca1436c..f5bba14d2fb 100644 --- a/compiler/rustc_traits/src/implied_outlives_bounds.rs +++ b/compiler/rustc_traits/src/implied_outlives_bounds.rs @@ -86,7 +86,7 @@ fn compute_implied_outlives_bounds<'tcx>( if obligation.predicate.has_non_region_infer() { match obligation.predicate.kind().skip_binder() { ty::PredicateKind::Clause(ty::Clause::Projection(..)) - | ty::PredicateKind::AliasEq(..) => { + | ty::PredicateKind::AliasRelate(..) => { ocx.register_obligation(obligation.clone()); } _ => {} @@ -110,7 +110,7 @@ fn compute_implied_outlives_bounds<'tcx>( | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::ConstEquate(..) | ty::PredicateKind::Ambiguous - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::TypeWellFormedFromEnv(..) => {} // We need to search through *all* WellFormed predicates diff --git a/compiler/rustc_traits/src/normalize_erasing_regions.rs b/compiler/rustc_traits/src/normalize_erasing_regions.rs index f0597f19225..126a494f34f 100644 --- a/compiler/rustc_traits/src/normalize_erasing_regions.rs +++ b/compiler/rustc_traits/src/normalize_erasing_regions.rs @@ -61,7 +61,7 @@ fn not_outlives_predicate(p: ty::Predicate<'_>) -> bool { ty::PredicateKind::Clause(ty::Clause::Trait(..)) | ty::PredicateKind::Clause(ty::Clause::Projection(..)) | ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::WellFormed(..) | ty::PredicateKind::ObjectSafe(..) | ty::PredicateKind::ClosureKind(..) diff --git a/compiler/rustc_type_ir/src/lib.rs b/compiler/rustc_type_ir/src/lib.rs index 5a991e03dee..8b23fbc7583 100644 --- a/compiler/rustc_type_ir/src/lib.rs +++ b/compiler/rustc_type_ir/src/lib.rs @@ -432,6 +432,17 @@ impl IntTy { _ => *self, } } + + pub fn to_unsigned(self) -> UintTy { + match self { + IntTy::Isize => UintTy::Usize, + IntTy::I8 => UintTy::U8, + IntTy::I16 => UintTy::U16, + IntTy::I32 => UintTy::U32, + IntTy::I64 => UintTy::U64, + IntTy::I128 => UintTy::U128, + } + } } #[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Copy, Debug)] @@ -479,6 +490,17 @@ impl UintTy { _ => *self, } } + + pub fn to_signed(self) -> IntTy { + match self { + UintTy::Usize => IntTy::Isize, + UintTy::U8 => IntTy::I8, + UintTy::U16 => IntTy::I16, + UintTy::U32 => IntTy::I32, + UintTy::U64 => IntTy::I64, + UintTy::U128 => IntTy::I128, + } + } } #[derive(Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)] diff --git a/library/alloc/src/rc.rs b/library/alloc/src/rc.rs index 089b6b6418d..1e9cf404f77 100644 --- a/library/alloc/src/rc.rs +++ b/library/alloc/src/rc.rs @@ -692,10 +692,10 @@ impl<T> Rc<T> { /// it is guaranteed that exactly one of the calls returns the inner value. /// This means in particular that the inner value is not dropped. /// - /// This is equivalent to `Rc::try_unwrap(...).ok()`. (Note that these are not equivalent for - /// `Arc`, due to race conditions that do not apply to `Rc`.) + /// This is equivalent to `Rc::try_unwrap(this).ok()`. (Note that these are not equivalent for + /// [`Arc`](crate::sync::Arc), due to race conditions that do not apply to `Rc`.) #[inline] - #[unstable(feature = "rc_into_inner", issue = "106894")] + #[stable(feature = "rc_into_inner", since = "CURRENT_RUSTC_VERSION")] pub fn into_inner(this: Self) -> Option<T> { Rc::try_unwrap(this).ok() } diff --git a/library/alloc/src/sync.rs b/library/alloc/src/sync.rs index 8a27a7ecdf6..150924851d2 100644 --- a/library/alloc/src/sync.rs +++ b/library/alloc/src/sync.rs @@ -662,20 +662,17 @@ impl<T> Arc<T> { /// /// This will succeed even if there are outstanding weak references. /// - // FIXME: when `Arc::into_inner` is stabilized, add this paragraph: - /* /// It is strongly recommended to use [`Arc::into_inner`] instead if you don't /// want to keep the `Arc` in the [`Err`] case. /// Immediately dropping the [`Err`] payload, like in the expression /// `Arc::try_unwrap(this).ok()`, can still cause the strong count to /// drop to zero and the inner value of the `Arc` to be dropped: - /// For instance if two threads execute this expression in parallel, then + /// For instance if two threads each execute this expression in parallel, then /// there is a race condition. The threads could first both check whether they /// have the last clone of their `Arc` via `Arc::try_unwrap`, and then /// both drop their `Arc` in the call to [`ok`][`Result::ok`], /// taking the strong count from two down to zero. /// - */ /// # Examples /// /// ``` @@ -719,20 +716,13 @@ impl<T> Arc<T> { /// This means in particular that the inner value is not dropped. /// /// The similar expression `Arc::try_unwrap(this).ok()` does not - /// offer such a guarantee. See the last example below. - // - // FIXME: when `Arc::into_inner` is stabilized, add this to end - // of the previous sentence: - /* + /// offer such a guarantee. See the last example below /// and the documentation of [`Arc::try_unwrap`]. - */ /// /// # Examples /// /// Minimal example demonstrating the guarantee that `Arc::into_inner` gives. /// ``` - /// #![feature(arc_into_inner)] - /// /// use std::sync::Arc; /// /// let x = Arc::new(3); @@ -756,8 +746,6 @@ impl<T> Arc<T> { /// /// A more practical example demonstrating the need for `Arc::into_inner`: /// ``` - /// #![feature(arc_into_inner)] - /// /// use std::sync::Arc; /// /// // Definition of a simple singly linked list using `Arc`: @@ -807,13 +795,8 @@ impl<T> Arc<T> { /// x_thread.join().unwrap(); /// y_thread.join().unwrap(); /// ``` - - // FIXME: when `Arc::into_inner` is stabilized, adjust above documentation - // and the documentation of `Arc::try_unwrap` according to the `FIXME`s. Also - // open an issue on rust-lang/rust-clippy, asking for a lint against - // `Arc::try_unwrap(...).ok()`. #[inline] - #[unstable(feature = "arc_into_inner", issue = "106894")] + #[stable(feature = "arc_into_inner", since = "CURRENT_RUSTC_VERSION")] pub fn into_inner(this: Self) -> Option<T> { // Make sure that the ordinary `Drop` implementation isn’t called as well let mut this = mem::ManuallyDrop::new(this); diff --git a/library/core/src/intrinsics/mir.rs b/library/core/src/intrinsics/mir.rs index 3061f76df04..6690c1a76d5 100644 --- a/library/core/src/intrinsics/mir.rs +++ b/library/core/src/intrinsics/mir.rs @@ -344,6 +344,14 @@ define!( fn Variant<T>(place: T, index: u32) -> () ); define!( + "mir_cast_transmute", + /// Emits a `CastKind::Transmute` cast. + /// + /// Needed to test the UB when `sizeof(T) != sizeof(U)`, which can't be + /// generated via the normal `mem::transmute`. + fn CastTransmute<T, U>(operand: T) -> U +); +define!( "mir_make_place", #[doc(hidden)] fn __internal_make_place<T>(place: T) -> *mut T diff --git a/library/core/src/panicking.rs b/library/core/src/panicking.rs index dd0105c0eb4..35da9151b6f 100644 --- a/library/core/src/panicking.rs +++ b/library/core/src/panicking.rs @@ -29,6 +29,9 @@ use crate::fmt; use crate::panic::{Location, PanicInfo}; +#[cfg(feature = "panic_immediate_abort")] +const _: () = assert!(cfg!(panic = "abort"), "panic_immediate_abort requires -C panic=abort"); + // First we define the two main entry points that all panics go through. // In the end both are just convenience wrappers around `panic_impl`. diff --git a/library/std/src/io/error.rs b/library/std/src/io/error.rs index 7f07e4fddef..1cedd6eedfa 100644 --- a/library/std/src/io/error.rs +++ b/library/std/src/io/error.rs @@ -370,7 +370,7 @@ pub enum ErrorKind { // "Unusual" error kinds which do not correspond simply to (sets // of) OS error codes, should be added just above this comment. - // `Other` and `Uncategorised` should remain at the end: + // `Other` and `Uncategorized` should remain at the end: // /// A custom error that does not fall under any other I/O error kind. /// @@ -882,6 +882,13 @@ impl Error { /// Returns the corresponding [`ErrorKind`] for this error. /// + /// This may be a value set by Rust code constructing custom `io::Error`s, + /// or if this `io::Error` was sourced from the operating system, + /// it will be a value inferred from the system's error encoding. + /// See [`last_os_error`] for more details. + /// + /// [`last_os_error`]: Error::last_os_error + /// /// # Examples /// /// ``` @@ -892,7 +899,8 @@ impl Error { /// } /// /// fn main() { - /// // Will print "Uncategorized". + /// // As no error has (visibly) occurred, this may print anything! + /// // It likely prints a placeholder for unidentified (non-)errors. /// print_error(Error::last_os_error()); /// // Will print "AddrInUse". /// print_error(Error::new(ErrorKind::AddrInUse, "oh no!")); diff --git a/library/std/src/sync/mutex.rs b/library/std/src/sync/mutex.rs index 065045f4420..b8fec6902a0 100644 --- a/library/std/src/sync/mutex.rs +++ b/library/std/src/sync/mutex.rs @@ -107,8 +107,8 @@ use crate::sys::locks as sys; /// *guard += 1; /// ``` /// -/// It is sometimes necessary to manually drop the mutex guard to unlock it -/// sooner than the end of the enclosing scope. +/// To unlock a mutex guard sooner than the end of the enclosing scope, +/// either create an inner scope or drop the guard manually. /// /// ``` /// use std::sync::{Arc, Mutex}; @@ -125,11 +125,18 @@ use crate::sys::locks as sys; /// let res_mutex_clone = Arc::clone(&res_mutex); /// /// threads.push(thread::spawn(move || { -/// let mut data = data_mutex_clone.lock().unwrap(); -/// // This is the result of some important and long-ish work. -/// let result = data.iter().fold(0, |acc, x| acc + x * 2); -/// data.push(result); -/// drop(data); +/// // Here we use a block to limit the lifetime of the lock guard. +/// let result = { +/// let mut data = data_mutex_clone.lock().unwrap(); +/// // This is the result of some important and long-ish work. +/// let result = data.iter().fold(0, |acc, x| acc + x * 2); +/// data.push(result); +/// result +/// // The mutex guard gets dropped here, together with any other values +/// // created in the critical section. +/// }; +/// // The guard created here is a temporary dropped at the end of the statement, i.e. +/// // the lock would not remain being held even if the thread did some additional work. /// *res_mutex_clone.lock().unwrap() += result; /// })); /// }); @@ -146,6 +153,8 @@ use crate::sys::locks as sys; /// // It's even more important here than in the threads because we `.join` the /// // threads after that. If we had not dropped the mutex guard, a thread could /// // be waiting forever for it, causing a deadlock. +/// // As in the threads, a block could have been used instead of calling the +/// // `drop` function. /// drop(data); /// // Here the mutex guard is not assigned to a variable and so, even if the /// // scope does not end after this line, the mutex is still released: there is @@ -160,6 +169,7 @@ use crate::sys::locks as sys; /// /// assert_eq!(*res_mutex.lock().unwrap(), 800); /// ``` +/// #[stable(feature = "rust1", since = "1.0.0")] #[cfg_attr(not(test), rustc_diagnostic_item = "Mutex")] pub struct Mutex<T: ?Sized> { diff --git a/library/std/src/sys/hermit/fs.rs b/library/std/src/sys/hermit/fs.rs index c966f217757..cf0b271761f 100644 --- a/library/std/src/sys/hermit/fs.rs +++ b/library/std/src/sys/hermit/fs.rs @@ -202,7 +202,7 @@ impl OpenOptions { create: false, create_new: false, // system-specific - mode: 0x777, + mode: 0o777, } } diff --git a/src/ci/docker/host-x86_64/i686-gnu/Dockerfile b/src/ci/docker/host-x86_64/i686-gnu/Dockerfile index d9e58386256..b5abf6564a6 100644 --- a/src/ci/docker/host-x86_64/i686-gnu/Dockerfile +++ b/src/ci/docker/host-x86_64/i686-gnu/Dockerfile @@ -16,6 +16,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \ zlib1g-dev \ lib32z1-dev \ xz-utils \ + mingw-w64 \ && rm -rf /var/lib/apt/lists/* diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14-stage1/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14-stage1/Dockerfile index b99a0886b4d..21dcf29b4a9 100644 --- a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14-stage1/Dockerfile +++ b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14-stage1/Dockerfile @@ -22,6 +22,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \ zlib1g-dev \ xz-utils \ nodejs \ + mingw-w64 \ && rm -rf /var/lib/apt/lists/* COPY scripts/sccache.sh /scripts/ diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile index dc8a4aac768..cfb638e8b07 100644 --- a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile +++ b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-14/Dockerfile @@ -23,6 +23,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \ zlib1g-dev \ xz-utils \ nodejs \ + mingw-w64 \ && rm -rf /var/lib/apt/lists/* # Install powershell (universal package) so we can test x.ps1 on Linux diff --git a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile index 5219247cc6f..fb5037e3b97 100644 --- a/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile +++ b/src/ci/docker/host-x86_64/x86_64-gnu-llvm-15/Dockerfile @@ -25,6 +25,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \ zlib1g-dev \ xz-utils \ nodejs \ + mingw-w64 \ && rm -rf /var/lib/apt/lists/* # Install powershell (universal package) so we can test x.ps1 on Linux diff --git a/src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile b/src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile index 5b9581f72a6..fbec368c9ee 100644 --- a/src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile +++ b/src/ci/docker/host-x86_64/x86_64-gnu/Dockerfile @@ -16,6 +16,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \ libssl-dev \ pkg-config \ xz-utils \ + mingw-w64 \ && rm -rf /var/lib/apt/lists/* COPY scripts/sccache.sh /scripts/ diff --git a/src/doc/rustdoc/src/how-to-read-rustdoc.md b/src/doc/rustdoc/src/how-to-read-rustdoc.md index 28a004a9253..2957916d56c 100644 --- a/src/doc/rustdoc/src/how-to-read-rustdoc.md +++ b/src/doc/rustdoc/src/how-to-read-rustdoc.md @@ -80,13 +80,20 @@ functions, and "In Return Types" shows matches in the return types of functions. Both are very useful when looking for a function whose name you can't quite bring to mind when you know the type you have or want. -When typing in the search bar, you can prefix your search term with a type -followed by a colon (such as `mod:`) to restrict the results to just that -kind of item. (The available items are listed in the help popup.) - -Searching for `println!` will search for a macro named `println`, just like +Names in the search interface can be prefixed with an item type followed by a +colon (such as `mod:`) to restrict the results to just that kind of item. Also, +searching for `println!` will search for a macro named `println`, just like searching for `macro:println` does. +Function signature searches can query generics, wrapped in angle brackets, and +traits are normalized like types in the search engine. For example, a function +with the signature `fn my_function<I: Iterator<Item=u32>>(input: I) -> usize` +can be matched with the following queries: + +* `Iterator<u32> -> usize` +* `trait:Iterator<primitive:u32> -> primitive:usize` +* `Iterator -> usize` + ### Changing displayed theme You can change the displayed theme by opening the settings menu (the gear diff --git a/src/librustdoc/clean/mod.rs b/src/librustdoc/clean/mod.rs index 2e1f456f50e..c00fa5994bf 100644 --- a/src/librustdoc/clean/mod.rs +++ b/src/librustdoc/clean/mod.rs @@ -324,7 +324,7 @@ pub(crate) fn clean_predicate<'tcx>( ty::PredicateKind::Clause(ty::Clause::ConstArgHasType(..)) => None, ty::PredicateKind::Subtype(..) - | ty::PredicateKind::AliasEq(..) + | ty::PredicateKind::AliasRelate(..) | ty::PredicateKind::Coerce(..) | ty::PredicateKind::ObjectSafe(..) | ty::PredicateKind::ClosureKind(..) diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs index 7dbb3f76a0a..a21a91a0ce8 100644 --- a/src/librustdoc/clean/types.rs +++ b/src/librustdoc/clean/types.rs @@ -482,10 +482,12 @@ impl Item { pub(crate) fn links(&self, cx: &Context<'_>) -> Vec<RenderedLink> { use crate::html::format::{href, link_tooltip}; - cx.cache() + let Some(links) = cx.cache() .intra_doc_links - .get(&self.item_id) - .map_or(&[][..], |v| v.as_slice()) + .get(&self.item_id) else { + return vec![] + }; + links .iter() .filter_map(|ItemLink { link: s, link_text, page_id: id, ref fragment }| { debug!(?id); @@ -513,10 +515,12 @@ impl Item { /// the link text, but does need to know which `[]`-bracketed names /// are actually links. pub(crate) fn link_names(&self, cache: &Cache) -> Vec<RenderedLink> { - cache + let Some(links) = cache .intra_doc_links - .get(&self.item_id) - .map_or(&[][..], |v| v.as_slice()) + .get(&self.item_id) else { + return vec![]; + }; + links .iter() .map(|ItemLink { link: s, link_text, .. }| RenderedLink { original_text: s.clone(), @@ -1014,7 +1018,7 @@ pub(crate) fn collapse_doc_fragments(doc_strings: &[DocFragment]) -> String { /// A link that has not yet been rendered. /// /// This link will be turned into a rendered link by [`Item::links`]. -#[derive(Clone, Debug, PartialEq, Eq)] +#[derive(Clone, Debug, PartialEq, Eq, Hash)] pub(crate) struct ItemLink { /// The original link written in the markdown pub(crate) link: Box<str>, diff --git a/src/librustdoc/formats/cache.rs b/src/librustdoc/formats/cache.rs index 0295de8437e..c0329182032 100644 --- a/src/librustdoc/formats/cache.rs +++ b/src/librustdoc/formats/cache.rs @@ -1,6 +1,6 @@ use std::mem; -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; +use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet}; use rustc_hir::def_id::{CrateNum, DefId, DefIdMap, DefIdSet}; use rustc_middle::ty::{self, TyCtxt}; use rustc_span::Symbol; @@ -118,7 +118,7 @@ pub(crate) struct Cache { /// All intra-doc links resolved so far. /// /// Links are indexed by the DefId of the item they document. - pub(crate) intra_doc_links: FxHashMap<ItemId, Vec<clean::ItemLink>>, + pub(crate) intra_doc_links: FxHashMap<ItemId, FxIndexSet<clean::ItemLink>>, /// Cfg that have been hidden via #![doc(cfg_hide(...))] pub(crate) hidden_cfg: FxHashSet<clean::cfg::Cfg>, } diff --git a/src/librustdoc/html/static/js/search.js b/src/librustdoc/html/static/js/search.js index 36ff20e299e..840ed8e1080 100644 --- a/src/librustdoc/html/static/js/search.js +++ b/src/librustdoc/html/static/js/search.js @@ -354,12 +354,15 @@ function initSearch(rawSearchIndex) { if (isInGenerics) { parserState.genericsElems += 1; } + const typeFilter = parserState.typeFilter; + parserState.typeFilter = null; return { name: name, fullPath: pathSegments, pathWithoutLast: pathSegments.slice(0, pathSegments.length - 1), pathLast: pathSegments[pathSegments.length - 1], generics: generics, + typeFilter, }; } @@ -495,6 +498,11 @@ function initSearch(rawSearchIndex) { */ function getItemsBefore(query, parserState, elems, endChar) { let foundStopChar = true; + let start = parserState.pos; + + // If this is a generic, keep the outer item's type filter around. + const oldTypeFilter = parserState.typeFilter; + parserState.typeFilter = null; while (parserState.pos < parserState.length) { const c = parserState.userQuery[parserState.pos]; @@ -506,7 +514,25 @@ function initSearch(rawSearchIndex) { continue; } else if (c === ":" && isPathStart(parserState)) { throw ["Unexpected ", "::", ": paths cannot start with ", "::"]; - } else if (c === ":" || isEndCharacter(c)) { + } else if (c === ":") { + if (parserState.typeFilter !== null) { + throw ["Unexpected ", ":"]; + } + if (elems.length === 0) { + throw ["Expected type filter before ", ":"]; + } else if (query.literalSearch) { + throw ["You cannot use quotes on type filter"]; + } + // The type filter doesn't count as an element since it's a modifier. + const typeFilterElem = elems.pop(); + checkExtraTypeFilterCharacters(start, parserState); + parserState.typeFilter = typeFilterElem.name; + parserState.pos += 1; + parserState.totalElems -= 1; + query.literalSearch = false; + foundStopChar = true; + continue; + } else if (isEndCharacter(c)) { let extra = ""; if (endChar === ">") { extra = "<"; @@ -540,15 +566,10 @@ function initSearch(rawSearchIndex) { ]; } const posBefore = parserState.pos; + start = parserState.pos; getNextElem(query, parserState, elems, endChar === ">"); - if (endChar !== "") { - if (parserState.pos >= parserState.length) { - throw ["Unclosed ", "<"]; - } - const c2 = parserState.userQuery[parserState.pos]; - if (!isSeparatorCharacter(c2) && c2 !== endChar) { - throw ["Expected ", endChar, ", found ", c2]; - } + if (endChar !== "" && parserState.pos >= parserState.length) { + throw ["Unclosed ", "<"]; } // This case can be encountered if `getNextElem` encountered a "stop character" right // from the start. For example if you have `,,` or `<>`. In this case, we simply move up @@ -564,6 +585,8 @@ function initSearch(rawSearchIndex) { // We are either at the end of the string or on the `endChar` character, let's move forward // in any case. parserState.pos += 1; + + parserState.typeFilter = oldTypeFilter; } /** @@ -572,10 +595,10 @@ function initSearch(rawSearchIndex) { * * @param {ParserState} parserState */ - function checkExtraTypeFilterCharacters(parserState) { + function checkExtraTypeFilterCharacters(start, parserState) { const query = parserState.userQuery; - for (let pos = 0; pos < parserState.pos; ++pos) { + for (let pos = start; pos < parserState.pos; ++pos) { if (!isIdentCharacter(query[pos]) && !isWhitespaceCharacter(query[pos])) { throw ["Unexpected ", query[pos], " in type filter"]; } @@ -591,6 +614,7 @@ function initSearch(rawSearchIndex) { */ function parseInput(query, parserState) { let foundStopChar = true; + let start = parserState.pos; while (parserState.pos < parserState.length) { const c = parserState.userQuery[parserState.pos]; @@ -612,16 +636,15 @@ function initSearch(rawSearchIndex) { } if (query.elems.length === 0) { throw ["Expected type filter before ", ":"]; - } else if (query.elems.length !== 1 || parserState.totalElems !== 1) { - throw ["Unexpected ", ":"]; } else if (query.literalSearch) { throw ["You cannot use quotes on type filter"]; } - checkExtraTypeFilterCharacters(parserState); // The type filter doesn't count as an element since it's a modifier. - parserState.typeFilter = query.elems.pop().name; + const typeFilterElem = query.elems.pop(); + checkExtraTypeFilterCharacters(start, parserState); + parserState.typeFilter = typeFilterElem.name; parserState.pos += 1; - parserState.totalElems = 0; + parserState.totalElems -= 1; query.literalSearch = false; foundStopChar = true; continue; @@ -653,6 +676,7 @@ function initSearch(rawSearchIndex) { ]; } const before = query.elems.length; + start = parserState.pos; getNextElem(query, parserState, query.elems, false); if (query.elems.length === before) { // Nothing was added, weird... Let's increase the position to not remain stuck. @@ -660,6 +684,9 @@ function initSearch(rawSearchIndex) { } foundStopChar = false; } + if (parserState.typeFilter !== null) { + throw ["Unexpected ", ":", " (expected path after type filter)"]; + } while (parserState.pos < parserState.length) { if (isReturnArrow(parserState)) { parserState.pos += 2; @@ -687,7 +714,6 @@ function initSearch(rawSearchIndex) { return { original: userQuery, userQuery: userQuery.toLowerCase(), - typeFilter: NO_TYPE_FILTER, elems: [], returned: [], // Total number of "top" elements (does not include generics). @@ -738,8 +764,8 @@ function initSearch(rawSearchIndex) { * * ident = *(ALPHA / DIGIT / "_") * path = ident *(DOUBLE-COLON ident) [!] - * arg = path [generics] - * arg-without-generic = path + * arg = [type-filter *WS COLON *WS] path [generics] + * arg-without-generic = [type-filter *WS COLON *WS] path * type-sep = COMMA/WS *(COMMA/WS) * nonempty-arg-list = *(type-sep) arg *(type-sep arg) *(type-sep) * nonempty-arg-list-without-generics = *(type-sep) arg-without-generic @@ -749,7 +775,7 @@ function initSearch(rawSearchIndex) { * return-args = RETURN-ARROW *(type-sep) nonempty-arg-list * * exact-search = [type-filter *WS COLON] [ RETURN-ARROW ] *WS QUOTE ident QUOTE [ generics ] - * type-search = [type-filter *WS COLON] [ nonempty-arg-list ] [ return-args ] + * type-search = [ nonempty-arg-list ] [ return-args ] * * query = *WS (exact-search / type-search) *WS * @@ -798,6 +824,20 @@ function initSearch(rawSearchIndex) { * @return {ParsedQuery} - The parsed query */ function parseQuery(userQuery) { + function convertTypeFilterOnElem(elem) { + if (elem.typeFilter !== null) { + let typeFilter = elem.typeFilter; + if (typeFilter === "const") { + typeFilter = "constant"; + } + elem.typeFilter = itemTypeFromName(typeFilter); + } else { + elem.typeFilter = NO_TYPE_FILTER; + } + for (const elem2 of elem.generics) { + convertTypeFilterOnElem(elem2); + } + } userQuery = userQuery.trim(); const parserState = { length: userQuery.length, @@ -812,17 +852,15 @@ function initSearch(rawSearchIndex) { try { parseInput(query, parserState); - if (parserState.typeFilter !== null) { - let typeFilter = parserState.typeFilter; - if (typeFilter === "const") { - typeFilter = "constant"; - } - query.typeFilter = itemTypeFromName(typeFilter); + for (const elem of query.elems) { + convertTypeFilterOnElem(elem); + } + for (const elem of query.returned) { + convertTypeFilterOnElem(elem); } } catch (err) { query = newParsedQuery(userQuery); query.error = err; - query.typeFilter = -1; return query; } @@ -1057,12 +1095,10 @@ function initSearch(rawSearchIndex) { } // The names match, but we need to be sure that all generics kinda // match as well. - let elem_name; if (elem.generics.length > 0 && row.generics.length >= elem.generics.length) { const elems = Object.create(null); for (const entry of row.generics) { - elem_name = entry.name; - if (elem_name === "") { + if (entry.name === "") { // Pure generic, needs to check into it. if (checkGenerics(entry, elem, maxEditDistance + 1, maxEditDistance) !== 0) { @@ -1070,19 +1106,19 @@ function initSearch(rawSearchIndex) { } continue; } - if (elems[elem_name] === undefined) { - elems[elem_name] = 0; + if (elems[entry.name] === undefined) { + elems[entry.name] = []; } - elems[elem_name] += 1; + elems[entry.name].push(entry.ty); } // We need to find the type that matches the most to remove it in order // to move forward. - for (const generic of elem.generics) { + const handleGeneric = generic => { let match = null; if (elems[generic.name]) { match = generic.name; } else { - for (elem_name in elems) { + for (const elem_name in elems) { if (!hasOwnPropertyRustdoc(elems, elem_name)) { continue; } @@ -1093,12 +1129,32 @@ function initSearch(rawSearchIndex) { } } if (match === null) { - return maxEditDistance + 1; + return false; } - elems[match] -= 1; - if (elems[match] === 0) { + const matchIdx = elems[match].findIndex(tmp_elem => + typePassesFilter(generic.typeFilter, tmp_elem)); + if (matchIdx === -1) { + return false; + } + elems[match].splice(matchIdx, 1); + if (elems[match].length === 0) { delete elems[match]; } + return true; + }; + // To do the right thing with type filters, we first process generics + // that have them, removing matching ones from the "bag," then do the + // ones with no type filter, which can match any entry regardless of its + // own type. + for (const generic of elem.generics) { + if (generic.typeFilter !== -1 && !handleGeneric(generic)) { + return maxEditDistance + 1; + } + } + for (const generic of elem.generics) { + if (generic.typeFilter === -1 && !handleGeneric(generic)) { + return maxEditDistance + 1; + } } return 0; } @@ -1145,14 +1201,20 @@ function initSearch(rawSearchIndex) { return maxEditDistance + 1; } - let dist = editDistance(row.name, elem.name, maxEditDistance); + let dist; + if (typePassesFilter(elem.typeFilter, row.ty)) { + dist = editDistance(row.name, elem.name, maxEditDistance); + } else { + dist = maxEditDistance + 1; + } if (literalSearch) { if (dist !== 0) { // The name didn't match, let's try to check if the generics do. if (elem.generics.length === 0) { const checkGeneric = row.generics.length > 0; if (checkGeneric && row.generics - .findIndex(tmp_elem => tmp_elem.name === elem.name) !== -1) { + .findIndex(tmp_elem => tmp_elem.name === elem.name && + typePassesFilter(elem.typeFilter, tmp_elem.ty)) !== -1) { return 0; } } @@ -1201,22 +1263,21 @@ function initSearch(rawSearchIndex) { * * @param {Row} row * @param {QueryElement} elem - The element from the parsed query. - * @param {integer} typeFilter + * @param {integer} maxEditDistance * @param {Array<integer>} skipPositions - Do not return one of these positions. * * @return {dist: integer, position: integer} - Returns an edit distance to the best match. * If there is no match, returns * `maxEditDistance + 1` and position: -1. */ - function findArg(row, elem, typeFilter, maxEditDistance, skipPositions) { + function findArg(row, elem, maxEditDistance, skipPositions) { let dist = maxEditDistance + 1; let position = -1; if (row && row.type && row.type.inputs && row.type.inputs.length > 0) { let i = 0; for (const input of row.type.inputs) { - if (!typePassesFilter(typeFilter, input.ty) || - skipPositions.indexOf(i) !== -1) { + if (skipPositions.indexOf(i) !== -1) { i += 1; continue; } @@ -1245,14 +1306,14 @@ function initSearch(rawSearchIndex) { * * @param {Row} row * @param {QueryElement} elem - The element from the parsed query. - * @param {integer} typeFilter + * @param {integer} maxEditDistance * @param {Array<integer>} skipPositions - Do not return one of these positions. * * @return {dist: integer, position: integer} - Returns an edit distance to the best match. * If there is no match, returns * `maxEditDistance + 1` and position: -1. */ - function checkReturned(row, elem, typeFilter, maxEditDistance, skipPositions) { + function checkReturned(row, elem, maxEditDistance, skipPositions) { let dist = maxEditDistance + 1; let position = -1; @@ -1260,8 +1321,7 @@ function initSearch(rawSearchIndex) { const ret = row.type.output; let i = 0; for (const ret_ty of ret) { - if (!typePassesFilter(typeFilter, ret_ty.ty) || - skipPositions.indexOf(i) !== -1) { + if (skipPositions.indexOf(i) !== -1) { i += 1; continue; } @@ -1483,15 +1543,15 @@ function initSearch(rawSearchIndex) { const fullId = row.id; const searchWord = searchWords[pos]; - const in_args = findArg(row, elem, parsedQuery.typeFilter, maxEditDistance, []); - const returned = checkReturned(row, elem, parsedQuery.typeFilter, maxEditDistance, []); + const in_args = findArg(row, elem, maxEditDistance, []); + const returned = checkReturned(row, elem, maxEditDistance, []); // path_dist is 0 because no parent path information is currently stored // in the search index addIntoResults(results_in_args, fullId, pos, -1, in_args.dist, 0, maxEditDistance); addIntoResults(results_returned, fullId, pos, -1, returned.dist, 0, maxEditDistance); - if (!typePassesFilter(parsedQuery.typeFilter, row.ty)) { + if (!typePassesFilter(elem.typeFilter, row.ty)) { return; } @@ -1568,7 +1628,6 @@ function initSearch(rawSearchIndex) { const { dist, position } = callback( row, elem, - NO_TYPE_FILTER, maxEditDistance, skipPositions ); @@ -1632,7 +1691,6 @@ function initSearch(rawSearchIndex) { in_returned = checkReturned( row, elem, - parsedQuery.typeFilter, maxEditDistance, [] ); diff --git a/src/librustdoc/passes/collect_intra_doc_links.rs b/src/librustdoc/passes/collect_intra_doc_links.rs index 0da56e70ed5..32a523f3123 100644 --- a/src/librustdoc/passes/collect_intra_doc_links.rs +++ b/src/librustdoc/passes/collect_intra_doc_links.rs @@ -969,7 +969,7 @@ impl LinkCollector<'_, '_> { for md_link in preprocessed_markdown_links(&doc) { let link = self.resolve_link(item, item_id, module_id, &doc, &md_link); if let Some(link) = link { - self.cx.cache.intra_doc_links.entry(item.item_id).or_default().push(link); + self.cx.cache.intra_doc_links.entry(item.item_id).or_default().insert(link); } } } diff --git a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs index 24403e8b6f3..9f6adf3e3fa 100644 --- a/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs +++ b/src/tools/clippy/clippy_utils/src/qualify_min_const_fn.rs @@ -37,7 +37,7 @@ pub fn is_min_const_fn<'tcx>(tcx: TyCtxt<'tcx>, body: &Body<'tcx>, msrv: &Msrv) | ty::PredicateKind::ConstEvaluatable(..) | ty::PredicateKind::ConstEquate(..) | ty::PredicateKind::TypeWellFormedFromEnv(..) => continue, - ty::PredicateKind::AliasEq(..) => panic!("alias eq predicate on function: {predicate:#?}"), + ty::PredicateKind::AliasRelate(..) => panic!("alias relate predicate on function: {predicate:#?}"), ty::PredicateKind::ObjectSafe(_) => panic!("object safe predicate on function: {predicate:#?}"), ty::PredicateKind::ClosureKind(..) => panic!("closure kind predicate on function: {predicate:#?}"), ty::PredicateKind::Subtype(_) => panic!("subtype predicate on function: {predicate:#?}"), @@ -176,6 +176,9 @@ fn check_rvalue<'tcx>( // FIXME(dyn-star) unimplemented!() }, + Rvalue::Cast(CastKind::Transmute, _, _) => { + Err((span, "transmute can attempt to turn pointers into integers, so is unstable in const fn".into())) + }, // binops are fine on integers Rvalue::BinaryOp(_, box (lhs, rhs)) | Rvalue::CheckedBinaryOp(_, box (lhs, rhs)) => { check_operand(tcx, lhs, span, body)?; diff --git a/src/tools/compiletest/src/header.rs b/src/tools/compiletest/src/header.rs index 22a0b1d13be..5bc9d9afcb9 100644 --- a/src/tools/compiletest/src/header.rs +++ b/src/tools/compiletest/src/header.rs @@ -964,6 +964,19 @@ pub fn make_test_description<R: Read>( .join(if config.host.contains("windows") { "rust-lld.exe" } else { "rust-lld" }) .exists(); + fn is_on_path(file: &'static str) -> impl Fn() -> bool { + move || env::split_paths(&env::var_os("PATH").unwrap()).any(|dir| dir.join(file).is_file()) + } + + // On Windows, dlltool.exe is used for all architectures. + #[cfg(windows)] + let (has_i686_dlltool, has_x86_64_dlltool) = + (is_on_path("dlltool.exe"), is_on_path("dlltool.exe")); + // For non-Windows, there are architecture specific dlltool binaries. + #[cfg(not(windows))] + let (has_i686_dlltool, has_x86_64_dlltool) = + (is_on_path("i686-w64-mingw32-dlltool"), is_on_path("x86_64-w64-mingw32-dlltool")); + iter_header(path, src, &mut |revision, ln| { if revision.is_some() && revision != cfg { return; @@ -1031,6 +1044,8 @@ pub fn make_test_description<R: Read>( reason!(config.debugger == Some(Debugger::Gdb) && ignore_gdb(config, ln)); reason!(config.debugger == Some(Debugger::Lldb) && ignore_lldb(config, ln)); reason!(!has_rust_lld && config.parse_name_directive(ln, "needs-rust-lld")); + reason!(config.parse_name_directive(ln, "needs-i686-dlltool") && !has_i686_dlltool()); + reason!(config.parse_name_directive(ln, "needs-x86_64-dlltool") && !has_x86_64_dlltool()); should_fail |= config.parse_name_directive(ln, "should-fail"); }); diff --git a/src/tools/lint-docs/src/lib.rs b/src/tools/lint-docs/src/lib.rs index 3842a649c6f..034c6aa0708 100644 --- a/src/tools/lint-docs/src/lib.rs +++ b/src/tools/lint-docs/src/lib.rs @@ -45,6 +45,36 @@ impl Lint { fn check_style(&self) -> Result<(), Box<dyn Error>> { for &expected in &["### Example", "### Explanation", "{{produces}}"] { if expected == "{{produces}}" && self.is_ignored() { + if self.doc_contains("{{produces}}") { + return Err(format!( + "the lint example has `ignore`, but also contains the {{{{produces}}}} marker\n\ + \n\ + The documentation generator cannot generate the example output when the \ + example is ignored.\n\ + Manually include the sample output below the example. For example:\n\ + \n\ + /// ```rust,ignore (needs command line option)\n\ + /// #[cfg(widnows)]\n\ + /// fn foo() {{}}\n\ + /// ```\n\ + ///\n\ + /// This will produce:\n\ + /// \n\ + /// ```text\n\ + /// warning: unknown condition name used\n\ + /// --> lint_example.rs:1:7\n\ + /// |\n\ + /// 1 | #[cfg(widnows)]\n\ + /// | ^^^^^^^\n\ + /// |\n\ + /// = note: `#[warn(unexpected_cfgs)]` on by default\n\ + /// ```\n\ + \n\ + Replacing the output with the text of the example you \ + compiled manually yourself.\n\ + " + ).into()); + } continue; } if !self.doc_contains(expected) { @@ -317,10 +347,10 @@ impl<'a> LintExtractor<'a> { .., &format!( "This will produce:\n\ - \n\ - ```text\n\ - {}\ - ```", + \n\ + ```text\n\ + {}\ + ```", output ), ); @@ -392,37 +422,36 @@ impl<'a> LintExtractor<'a> { .filter(|line| line.starts_with('{')) .map(serde_json::from_str) .collect::<Result<Vec<serde_json::Value>, _>>()?; - match msgs + // First try to find the messages with the `code` field set to our lint. + let matches: Vec<_> = msgs .iter() - .find(|msg| matches!(&msg["code"]["code"], serde_json::Value::String(s) if s==name)) - { - Some(msg) => { - let rendered = msg["rendered"].as_str().expect("rendered field should exist"); - Ok(rendered.to_string()) - } - None => { - match msgs.iter().find( - |msg| matches!(&msg["rendered"], serde_json::Value::String(s) if s.contains(name)), - ) { - Some(msg) => { - let rendered = msg["rendered"].as_str().expect("rendered field should exist"); - Ok(rendered.to_string()) - } - None => { - let rendered: Vec<&str> = - msgs.iter().filter_map(|msg| msg["rendered"].as_str()).collect(); - let non_json: Vec<&str> = - stderr.lines().filter(|line| !line.starts_with('{')).collect(); - Err(format!( - "did not find lint `{}` in output of example, got:\n{}\n{}", - name, - non_json.join("\n"), - rendered.join("\n") - ) - .into()) - } - } + .filter(|msg| matches!(&msg["code"]["code"], serde_json::Value::String(s) if s==name)) + .map(|msg| msg["rendered"].as_str().expect("rendered field should exist").to_string()) + .collect(); + if matches.is_empty() { + // Some lints override their code to something else (E0566). + // Try to find something that looks like it could be our lint. + let matches: Vec<_> = msgs.iter().filter(|msg| + matches!(&msg["rendered"], serde_json::Value::String(s) if s.contains(name))) + .map(|msg| msg["rendered"].as_str().expect("rendered field should exist").to_string()) + .collect(); + if matches.is_empty() { + let rendered: Vec<&str> = + msgs.iter().filter_map(|msg| msg["rendered"].as_str()).collect(); + let non_json: Vec<&str> = + stderr.lines().filter(|line| !line.starts_with('{')).collect(); + Err(format!( + "did not find lint `{}` in output of example, got:\n{}\n{}", + name, + non_json.join("\n"), + rendered.join("\n") + ) + .into()) + } else { + Ok(matches.join("\n")) } + } else { + Ok(matches.join("\n")) } } diff --git a/src/tools/miri/tests/fail/never_transmute_humans.rs b/src/tools/miri/tests/fail/never_transmute_humans.rs index de723433dc2..cba3cc0ccf1 100644 --- a/src/tools/miri/tests/fail/never_transmute_humans.rs +++ b/src/tools/miri/tests/fail/never_transmute_humans.rs @@ -7,6 +7,6 @@ struct Human; fn main() { let _x: ! = unsafe { - std::mem::transmute::<Human, !>(Human) //~ ERROR: transmuting to uninhabited + std::mem::transmute::<Human, !>(Human) //~ ERROR: entering unreachable code }; } diff --git a/src/tools/miri/tests/fail/never_transmute_humans.stderr b/src/tools/miri/tests/fail/never_transmute_humans.stderr index e8df4739f9b..a51ca7fe7e7 100644 --- a/src/tools/miri/tests/fail/never_transmute_humans.stderr +++ b/src/tools/miri/tests/fail/never_transmute_humans.stderr @@ -1,8 +1,8 @@ -error: Undefined Behavior: transmuting to uninhabited type +error: Undefined Behavior: entering unreachable code --> $DIR/never_transmute_humans.rs:LL:CC | LL | std::mem::transmute::<Human, !>(Human) - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ entering unreachable code | = help: this indicates a bug in the program: it performed an invalid operation, and caused Undefined Behavior = help: see https://doc.rust-lang.org/nightly/reference/behavior-considered-undefined.html for further information diff --git a/src/tools/miri/tests/fail/never_transmute_void.rs b/src/tools/miri/tests/fail/never_transmute_void.rs index 19473e9ac21..ad67b444616 100644 --- a/src/tools/miri/tests/fail/never_transmute_void.rs +++ b/src/tools/miri/tests/fail/never_transmute_void.rs @@ -10,11 +10,13 @@ mod m { pub struct Void(VoidI); pub fn f(v: Void) -> ! { - match v.0 {} //~ ERROR: entering unreachable code + match v.0 {} + //~^ ERROR: entering unreachable code } } fn main() { let v = unsafe { std::mem::transmute::<(), m::Void>(()) }; - m::f(v); //~ NOTE: inside `main` + m::f(v); + //~^ NOTE: inside `main` } diff --git a/src/tools/rustdoc-js/tester.js b/src/tools/rustdoc-js/tester.js index 8d46a8ce7f1..6b9a9b66a7d 100644 --- a/src/tools/rustdoc-js/tester.js +++ b/src/tools/rustdoc-js/tester.js @@ -79,11 +79,18 @@ function checkNeededFields(fullPath, expected, error_text, queryName, position) "foundElems", "original", "returned", - "typeFilter", "userQuery", "error", ]; - } else if (fullPath.endsWith("elems") || fullPath.endsWith("generics")) { + } else if (fullPath.endsWith("elems") || fullPath.endsWith("returned")) { + fieldsToCheck = [ + "name", + "fullPath", + "pathWithoutLast", + "pathLast", + "generics", + ]; + } else if (fullPath.endsWith("generics")) { fieldsToCheck = [ "name", "fullPath", diff --git a/tests/assembly/is_aligned.rs b/tests/assembly/is_aligned.rs index 620a3da9463..148d11ee4d6 100644 --- a/tests/assembly/is_aligned.rs +++ b/tests/assembly/is_aligned.rs @@ -1,6 +1,7 @@ // assembly-output: emit-asm // min-llvm-version: 15.0 // only-x86_64 +// ignore-sgx // revisions: opt-speed opt-size // [opt-speed] compile-flags: -Copt-level=1 // [opt-size] compile-flags: -Copt-level=s diff --git a/tests/assembly/strict_provenance.rs b/tests/assembly/strict_provenance.rs index 01f1957d5f6..24a7c6b5bf1 100644 --- a/tests/assembly/strict_provenance.rs +++ b/tests/assembly/strict_provenance.rs @@ -1,6 +1,7 @@ // assembly-output: emit-asm // compile-flags: -Copt-level=1 // only-x86_64 +// ignore-sgx // min-llvm-version: 15.0 #![crate_type = "rlib"] diff --git a/tests/assembly/x86_64-floating-point-clamp.rs b/tests/assembly/x86_64-floating-point-clamp.rs index 0f3b465d08d..0bc6baad479 100644 --- a/tests/assembly/x86_64-floating-point-clamp.rs +++ b/tests/assembly/x86_64-floating-point-clamp.rs @@ -4,6 +4,7 @@ // assembly-output: emit-asm // compile-flags: --crate-type=lib -O -C llvm-args=-x86-asm-syntax=intel // only-x86_64 +// ignore-sgx // CHECK-LABEL: clamp_demo: #[no_mangle] diff --git a/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-generic-load.rs b/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-generic-load.rs index 79d82cf70d3..7eb3c6948ac 100644 --- a/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-generic-load.rs +++ b/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-generic-load.rs @@ -11,7 +11,7 @@ pub extern fn plus_one(r: &mut u64) { // CHECK: plus_one // CHECK: lfence -// CHECK-NEXT: addq +// CHECK-NEXT: incq // CHECK: popq [[REGISTER:%[a-z]+]] // CHECK-NEXT: lfence // CHECK-NEXT: jmpq *[[REGISTER]] diff --git a/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-inline-assembly.rs b/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-inline-assembly.rs index c316379d5b1..4745ebc4fcd 100644 --- a/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-inline-assembly.rs +++ b/tests/assembly/x86_64-fortanix-unknown-sgx-lvi-inline-assembly.rs @@ -10,9 +10,7 @@ use std::arch::asm; pub extern "C" fn get(ptr: *const u64) -> u64 { let value: u64; unsafe { - asm!(".start_inline_asm:", - "mov {}, [{}]", - ".end_inline_asm:", + asm!("mov {}, [{}]", out(reg) value, in(reg) ptr); } @@ -20,24 +18,17 @@ pub extern "C" fn get(ptr: *const u64) -> u64 { } // CHECK: get -// CHECK: .start_inline_asm -// CHECK-NEXT: movq +// CHECK: movq // CHECK-NEXT: lfence -// CHECK-NEXT: .end_inline_asm #[no_mangle] pub extern "C" fn myret() { unsafe { - asm!( - ".start_myret_inline_asm:", - "ret", - ".end_myret_inline_asm:", - ); + asm!("ret"); } } // CHECK: myret -// CHECK: .start_myret_inline_asm -// CHECK-NEXT: shlq $0, (%rsp) +// CHECK: shlq $0, (%rsp) // CHECK-NEXT: lfence // CHECK-NEXT: retq diff --git a/tests/assembly/x86_64-no-jump-tables.rs b/tests/assembly/x86_64-no-jump-tables.rs index 007c3591a4a..edf4adaad41 100644 --- a/tests/assembly/x86_64-no-jump-tables.rs +++ b/tests/assembly/x86_64-no-jump-tables.rs @@ -6,6 +6,7 @@ // compile-flags: -O // [set] compile-flags: -Zno-jump-tables // only-x86_64 +// ignore-sgx #![crate_type = "lib"] diff --git a/tests/codegen/intrinsics/transmute.rs b/tests/codegen/intrinsics/transmute.rs new file mode 100644 index 00000000000..cefcf9ed9ca --- /dev/null +++ b/tests/codegen/intrinsics/transmute.rs @@ -0,0 +1,196 @@ +// compile-flags: -O -C no-prepopulate-passes +// only-64bit (so I don't need to worry about usize) +// min-llvm-version: 15.0 # this test assumes `ptr`s + +#![crate_type = "lib"] +#![feature(core_intrinsics)] +#![feature(custom_mir)] +#![feature(inline_const)] + +use std::mem::transmute; + +// Some of the cases here are statically rejected by `mem::transmute`, so +// we need to generate custom MIR for those cases to get to codegen. +use std::intrinsics::mir::*; + +enum Never {} + +#[repr(align(2))] +pub struct BigNever(Never, u16, Never); + +#[repr(align(8))] +pub struct Scalar64(i64); + +#[repr(C, align(4))] +pub struct Aggregate64(u16, u8, i8, f32); + +// CHECK-LABEL: @check_bigger_size( +#[no_mangle] +#[custom_mir(dialect = "runtime", phase = "initial")] +pub unsafe fn check_bigger_size(x: u16) -> u32 { + // CHECK: call void @llvm.trap + mir!{ + { + RET = CastTransmute(x); + Return() + } + } +} + +// CHECK-LABEL: @check_smaller_size( +#[no_mangle] +#[custom_mir(dialect = "runtime", phase = "initial")] +pub unsafe fn check_smaller_size(x: u32) -> u16 { + // CHECK: call void @llvm.trap + mir!{ + { + RET = CastTransmute(x); + Return() + } + } +} + +// CHECK-LABEL: @check_to_uninhabited( +#[no_mangle] +#[custom_mir(dialect = "runtime", phase = "initial")] +pub unsafe fn check_to_uninhabited(x: u16) -> BigNever { + // CHECK: call void @llvm.trap + mir!{ + { + RET = CastTransmute(x); + Return() + } + } +} + +// CHECK-LABEL: @check_from_uninhabited( +#[no_mangle] +#[custom_mir(dialect = "runtime", phase = "initial")] +pub unsafe fn check_from_uninhabited(x: BigNever) -> u16 { + // CHECK: call void @llvm.trap + mir!{ + { + RET = CastTransmute(x); + Return() + } + } +} + +// CHECK-LABEL: @check_to_newtype( +#[no_mangle] +pub unsafe fn check_to_newtype(x: u64) -> Scalar64 { + // CHECK: %0 = alloca i64 + // CHECK: store i64 %x, ptr %0 + // CHECK: %1 = load i64, ptr %0 + // CHECK: ret i64 %1 + transmute(x) +} + +// CHECK-LABEL: @check_from_newtype( +#[no_mangle] +pub unsafe fn check_from_newtype(x: Scalar64) -> u64 { + // CHECK: %0 = alloca i64 + // CHECK: store i64 %x, ptr %0 + // CHECK: %1 = load i64, ptr %0 + // CHECK: ret i64 %1 + transmute(x) +} + +// CHECK-LABEL: @check_to_pair( +#[no_mangle] +pub unsafe fn check_to_pair(x: u64) -> Option<i32> { + // CHECK: %0 = alloca { i32, i32 }, align 4 + // CHECK: store i64 %x, ptr %0, align 4 + transmute(x) +} + +// CHECK-LABEL: @check_from_pair( +#[no_mangle] +pub unsafe fn check_from_pair(x: Option<i32>) -> u64 { + // The two arguments are of types that are only 4-aligned, but they're + // immediates so we can write using the destination alloca's alignment. + const { assert!(std::mem::align_of::<Option<i32>>() == 4) }; + + // CHECK: %0 = alloca i64, align 8 + // CHECK: store i32 %x.0, ptr %1, align 8 + // CHECK: store i32 %x.1, ptr %2, align 4 + // CHECK: %3 = load i64, ptr %0, align 8 + // CHECK: ret i64 %3 + transmute(x) +} + +// CHECK-LABEL: @check_to_float( +#[no_mangle] +pub unsafe fn check_to_float(x: u32) -> f32 { + // CHECK: %0 = alloca float + // CHECK: store i32 %x, ptr %0 + // CHECK: %1 = load float, ptr %0 + // CHECK: ret float %1 + transmute(x) +} + +// CHECK-LABEL: @check_from_float( +#[no_mangle] +pub unsafe fn check_from_float(x: f32) -> u32 { + // CHECK: %0 = alloca i32 + // CHECK: store float %x, ptr %0 + // CHECK: %1 = load i32, ptr %0 + // CHECK: ret i32 %1 + transmute(x) +} + +// CHECK-LABEL: @check_to_bytes( +#[no_mangle] +pub unsafe fn check_to_bytes(x: u32) -> [u8; 4] { + // CHECK: %0 = alloca [4 x i8], align 1 + // CHECK: store i32 %x, ptr %0, align 1 + // CHECK: %1 = load i32, ptr %0, align 1 + // CHECK: ret i32 %1 + transmute(x) +} + +// CHECK-LABEL: @check_from_bytes( +#[no_mangle] +pub unsafe fn check_from_bytes(x: [u8; 4]) -> u32 { + // CHECK: %1 = alloca i32, align 4 + // CHECK: %x = alloca [4 x i8], align 1 + // CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %1, ptr align 1 %x, i64 4, i1 false) + // CHECK: %3 = load i32, ptr %1, align 4 + // CHECK: ret i32 %3 + transmute(x) +} + +// CHECK-LABEL: @check_to_aggregate( +#[no_mangle] +pub unsafe fn check_to_aggregate(x: u64) -> Aggregate64 { + // CHECK: %0 = alloca %Aggregate64, align 4 + // CHECK: store i64 %x, ptr %0, align 4 + // CHECK: %1 = load i64, ptr %0, align 4 + // CHECK: ret i64 %1 + transmute(x) +} + +// CHECK-LABEL: @check_from_aggregate( +#[no_mangle] +pub unsafe fn check_from_aggregate(x: Aggregate64) -> u64 { + // CHECK: call void @llvm.memcpy.p0.p0.i64(ptr align 8 %{{[0-9]+}}, ptr align 4 %x, i64 8, i1 false) + transmute(x) +} + +// CHECK-LABEL: @check_long_array_less_aligned( +#[no_mangle] +pub unsafe fn check_long_array_less_aligned(x: [u64; 100]) -> [u16; 400] { + // CHECK-NEXT: start + // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 2 %0, ptr align 8 %x, i64 800, i1 false) + // CHECK-NEXT: ret void + transmute(x) +} + +// CHECK-LABEL: @check_long_array_more_aligned( +#[no_mangle] +pub unsafe fn check_long_array_more_aligned(x: [u8; 100]) -> [u32; 25] { + // CHECK-NEXT: start + // CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 4 %0, ptr align 1 %x, i64 100, i1 false) + // CHECK-NEXT: ret void + transmute(x) +} diff --git a/tests/codegen/transmute-scalar.rs b/tests/codegen/transmute-scalar.rs index 260dcbac0fc..4d7a80bfbe5 100644 --- a/tests/codegen/transmute-scalar.rs +++ b/tests/codegen/transmute-scalar.rs @@ -1,13 +1,19 @@ // compile-flags: -O -C no-prepopulate-passes +// min-llvm-version: 15.0 # this test assumes `ptr`s and thus no `pointercast`s #![crate_type = "lib"] -// FIXME(eddyb) all of these tests show memory stores and loads, even after a -// scalar `bitcast`, more special-casing is required to remove `alloca` usage. +// With opaque ptrs in LLVM, `transmute` can load/store any `alloca` as any type, +// without needing to pointercast, and SRoA will turn that into a `bitcast`. +// As such, there's no longer special-casing in `transmute` to attempt to +// generate `bitcast` ourselves, as that just made the IR longer. + +// FIXME: That said, `bitcast`s could still be a valuable addition if they could +// be done in `rvalue_creates_operand`, and thus avoid the `alloca`s entirely. // CHECK-LABEL: define{{.*}}i32 @f32_to_bits(float noundef %x) -// CHECK: store i32 %{{.*}}, {{.*}} %0 -// CHECK-NEXT: %[[RES:.*]] = load i32, {{.*}} %0 +// CHECK: store float %{{.*}}, ptr %0 +// CHECK-NEXT: %[[RES:.*]] = load i32, ptr %0 // CHECK: ret i32 %[[RES]] #[no_mangle] pub fn f32_to_bits(x: f32) -> u32 { @@ -25,12 +31,10 @@ pub fn bool_to_byte(b: bool) -> u8 { } // CHECK-LABEL: define{{.*}}noundef zeroext i1 @byte_to_bool(i8 noundef %byte) -// CHECK: %1 = trunc i8 %byte to i1 -// CHECK-NEXT: %2 = zext i1 %1 to i8 -// CHECK-NEXT: store i8 %2, {{.*}} %0 -// CHECK-NEXT: %3 = load i8, {{.*}} %0 -// CHECK-NEXT: %4 = trunc i8 %3 to i1 -// CHECK: ret i1 %4 +// CHECK: store i8 %byte, ptr %0 +// CHECK-NEXT: %1 = load i8, {{.*}} %0 +// CHECK-NEXT: %2 = trunc i8 %1 to i1 +// CHECK: ret i1 %2 #[no_mangle] pub unsafe fn byte_to_bool(byte: u8) -> bool { std::mem::transmute(byte) @@ -45,20 +49,8 @@ pub fn ptr_to_ptr(p: *mut u16) -> *mut u8 { unsafe { std::mem::transmute(p) } } -// HACK(eddyb) scalar `transmute`s between pointers and non-pointers are -// currently not special-cased like other scalar `transmute`s, because -// LLVM requires specifically `ptrtoint`/`inttoptr` instead of `bitcast`. -// -// Tests below show the non-special-cased behavior (with the possible -// future special-cased instructions in the "NOTE(eddyb)" comments). - // CHECK: define{{.*}}[[USIZE:i[0-9]+]] @ptr_to_int({{i16\*|ptr}} noundef %p) - -// NOTE(eddyb) see above, the following two CHECK lines should ideally be this: -// %2 = ptrtoint i16* %p to [[USIZE]] -// store [[USIZE]] %2, [[USIZE]]* %0 // CHECK: store {{i16\*|ptr}} %p, {{.*}} - // CHECK-NEXT: %[[RES:.*]] = load [[USIZE]], {{.*}} %0 // CHECK: ret [[USIZE]] %[[RES]] #[no_mangle] @@ -67,12 +59,7 @@ pub fn ptr_to_int(p: *mut u16) -> usize { } // CHECK: define{{.*}}{{i16\*|ptr}} @int_to_ptr([[USIZE]] noundef %i) - -// NOTE(eddyb) see above, the following two CHECK lines should ideally be this: -// %2 = inttoptr [[USIZE]] %i to i16* -// store i16* %2, i16** %0 // CHECK: store [[USIZE]] %i, {{.*}} - // CHECK-NEXT: %[[RES:.*]] = load {{i16\*|ptr}}, {{.*}} %0 // CHECK: ret {{i16\*|ptr}} %[[RES]] #[no_mangle] diff --git a/tests/mir-opt/building/shifts.rs b/tests/mir-opt/building/shifts.rs new file mode 100644 index 00000000000..4b63a00a304 --- /dev/null +++ b/tests/mir-opt/building/shifts.rs @@ -0,0 +1,20 @@ +// compile-flags: -C debug-assertions=yes + +// EMIT_MIR shifts.shift_signed.built.after.mir +fn shift_signed(small: i8, big: u128, a: i8, b: i32, c: i128) -> ([i8; 3], [u128; 3]) { + ( + [small >> a, small >> b, small >> c], + [big << a, big << b, big << c], + ) +} + +// EMIT_MIR shifts.shift_unsigned.built.after.mir +fn shift_unsigned(small: u8, big: i128, a: u8, b: u32, c: u128) -> ([u8; 3], [i128; 3]) { + ( + [small >> a, small >> b, small >> c], + [big << a, big << b, big << c], + ) +} + +fn main() { +} diff --git a/tests/mir-opt/building/shifts.shift_signed.built.after.mir b/tests/mir-opt/building/shifts.shift_signed.built.after.mir new file mode 100644 index 00000000000..028777cefdd --- /dev/null +++ b/tests/mir-opt/building/shifts.shift_signed.built.after.mir @@ -0,0 +1,147 @@ +// MIR for `shift_signed` after built + +fn shift_signed(_1: i8, _2: u128, _3: i8, _4: i32, _5: i128) -> ([i8; 3], [u128; 3]) { + debug small => _1; // in scope 0 at $DIR/shifts.rs:+0:17: +0:22 + debug big => _2; // in scope 0 at $DIR/shifts.rs:+0:28: +0:31 + debug a => _3; // in scope 0 at $DIR/shifts.rs:+0:39: +0:40 + debug b => _4; // in scope 0 at $DIR/shifts.rs:+0:46: +0:47 + debug c => _5; // in scope 0 at $DIR/shifts.rs:+0:54: +0:55 + let mut _0: ([i8; 3], [u128; 3]); // return place in scope 0 at $DIR/shifts.rs:+0:66: +0:86 + let mut _6: [i8; 3]; // in scope 0 at $DIR/shifts.rs:+2:9: +2:45 + let mut _7: i8; // in scope 0 at $DIR/shifts.rs:+2:10: +2:20 + let mut _8: i8; // in scope 0 at $DIR/shifts.rs:+2:10: +2:15 + let mut _9: i8; // in scope 0 at $DIR/shifts.rs:+2:19: +2:20 + let mut _10: u8; // in scope 0 at $DIR/shifts.rs:+2:10: +2:20 + let mut _11: bool; // in scope 0 at $DIR/shifts.rs:+2:10: +2:20 + let mut _12: i8; // in scope 0 at $DIR/shifts.rs:+2:22: +2:32 + let mut _13: i8; // in scope 0 at $DIR/shifts.rs:+2:22: +2:27 + let mut _14: i32; // in scope 0 at $DIR/shifts.rs:+2:31: +2:32 + let mut _15: u32; // in scope 0 at $DIR/shifts.rs:+2:22: +2:32 + let mut _16: bool; // in scope 0 at $DIR/shifts.rs:+2:22: +2:32 + let mut _17: i8; // in scope 0 at $DIR/shifts.rs:+2:34: +2:44 + let mut _18: i8; // in scope 0 at $DIR/shifts.rs:+2:34: +2:39 + let mut _19: i128; // in scope 0 at $DIR/shifts.rs:+2:43: +2:44 + let mut _20: u128; // in scope 0 at $DIR/shifts.rs:+2:34: +2:44 + let mut _21: bool; // in scope 0 at $DIR/shifts.rs:+2:34: +2:44 + let mut _22: [u128; 3]; // in scope 0 at $DIR/shifts.rs:+3:9: +3:39 + let mut _23: u128; // in scope 0 at $DIR/shifts.rs:+3:10: +3:18 + let mut _24: u128; // in scope 0 at $DIR/shifts.rs:+3:10: +3:13 + let mut _25: i8; // in scope 0 at $DIR/shifts.rs:+3:17: +3:18 + let mut _26: u8; // in scope 0 at $DIR/shifts.rs:+3:10: +3:18 + let mut _27: bool; // in scope 0 at $DIR/shifts.rs:+3:10: +3:18 + let mut _28: u128; // in scope 0 at $DIR/shifts.rs:+3:20: +3:28 + let mut _29: u128; // in scope 0 at $DIR/shifts.rs:+3:20: +3:23 + let mut _30: i32; // in scope 0 at $DIR/shifts.rs:+3:27: +3:28 + let mut _31: u32; // in scope 0 at $DIR/shifts.rs:+3:20: +3:28 + let mut _32: bool; // in scope 0 at $DIR/shifts.rs:+3:20: +3:28 + let mut _33: u128; // in scope 0 at $DIR/shifts.rs:+3:30: +3:38 + let mut _34: u128; // in scope 0 at $DIR/shifts.rs:+3:30: +3:33 + let mut _35: i128; // in scope 0 at $DIR/shifts.rs:+3:37: +3:38 + let mut _36: u128; // in scope 0 at $DIR/shifts.rs:+3:30: +3:38 + let mut _37: bool; // in scope 0 at $DIR/shifts.rs:+3:30: +3:38 + + bb0: { + StorageLive(_6); // scope 0 at $DIR/shifts.rs:+2:9: +2:45 + StorageLive(_7); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + StorageLive(_8); // scope 0 at $DIR/shifts.rs:+2:10: +2:15 + _8 = _1; // scope 0 at $DIR/shifts.rs:+2:10: +2:15 + StorageLive(_9); // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + _9 = _3; // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + _10 = _9 as u8 (IntToInt); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + _11 = Lt(move _10, const 8_u8); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + assert(move _11, "attempt to shift right by `{}`, which would overflow", _9) -> [success: bb1, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + } + + bb1: { + _7 = Shr(move _8, move _9); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + StorageDead(_9); // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + StorageDead(_8); // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + StorageLive(_12); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + StorageLive(_13); // scope 0 at $DIR/shifts.rs:+2:22: +2:27 + _13 = _1; // scope 0 at $DIR/shifts.rs:+2:22: +2:27 + StorageLive(_14); // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + _14 = _4; // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + _15 = _14 as u32 (IntToInt); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + _16 = Lt(move _15, const 8_u32); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + assert(move _16, "attempt to shift right by `{}`, which would overflow", _14) -> [success: bb2, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + } + + bb2: { + _12 = Shr(move _13, move _14); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + StorageDead(_14); // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + StorageDead(_13); // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + StorageLive(_17); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + StorageLive(_18); // scope 0 at $DIR/shifts.rs:+2:34: +2:39 + _18 = _1; // scope 0 at $DIR/shifts.rs:+2:34: +2:39 + StorageLive(_19); // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + _19 = _5; // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + _20 = _19 as u128 (IntToInt); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + _21 = Lt(move _20, const 8_u128); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + assert(move _21, "attempt to shift right by `{}`, which would overflow", _19) -> [success: bb3, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + } + + bb3: { + _17 = Shr(move _18, move _19); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + StorageDead(_19); // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + StorageDead(_18); // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + _6 = [move _7, move _12, move _17]; // scope 0 at $DIR/shifts.rs:+2:9: +2:45 + StorageDead(_17); // scope 0 at $DIR/shifts.rs:+2:44: +2:45 + StorageDead(_12); // scope 0 at $DIR/shifts.rs:+2:44: +2:45 + StorageDead(_7); // scope 0 at $DIR/shifts.rs:+2:44: +2:45 + StorageLive(_22); // scope 0 at $DIR/shifts.rs:+3:9: +3:39 + StorageLive(_23); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + StorageLive(_24); // scope 0 at $DIR/shifts.rs:+3:10: +3:13 + _24 = _2; // scope 0 at $DIR/shifts.rs:+3:10: +3:13 + StorageLive(_25); // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + _25 = _3; // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + _26 = _25 as u8 (IntToInt); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + _27 = Lt(move _26, const 128_u8); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + assert(move _27, "attempt to shift left by `{}`, which would overflow", _25) -> [success: bb4, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + } + + bb4: { + _23 = Shl(move _24, move _25); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + StorageDead(_25); // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + StorageDead(_24); // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + StorageLive(_28); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + StorageLive(_29); // scope 0 at $DIR/shifts.rs:+3:20: +3:23 + _29 = _2; // scope 0 at $DIR/shifts.rs:+3:20: +3:23 + StorageLive(_30); // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + _30 = _4; // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + _31 = _30 as u32 (IntToInt); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + _32 = Lt(move _31, const 128_u32); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + assert(move _32, "attempt to shift left by `{}`, which would overflow", _30) -> [success: bb5, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + } + + bb5: { + _28 = Shl(move _29, move _30); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + StorageDead(_30); // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + StorageDead(_29); // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + StorageLive(_33); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + StorageLive(_34); // scope 0 at $DIR/shifts.rs:+3:30: +3:33 + _34 = _2; // scope 0 at $DIR/shifts.rs:+3:30: +3:33 + StorageLive(_35); // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + _35 = _5; // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + _36 = _35 as u128 (IntToInt); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + _37 = Lt(move _36, const 128_u128); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + assert(move _37, "attempt to shift left by `{}`, which would overflow", _35) -> [success: bb6, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + } + + bb6: { + _33 = Shl(move _34, move _35); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + StorageDead(_35); // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + StorageDead(_34); // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + _22 = [move _23, move _28, move _33]; // scope 0 at $DIR/shifts.rs:+3:9: +3:39 + StorageDead(_33); // scope 0 at $DIR/shifts.rs:+3:38: +3:39 + StorageDead(_28); // scope 0 at $DIR/shifts.rs:+3:38: +3:39 + StorageDead(_23); // scope 0 at $DIR/shifts.rs:+3:38: +3:39 + _0 = (move _6, move _22); // scope 0 at $DIR/shifts.rs:+1:5: +4:6 + StorageDead(_22); // scope 0 at $DIR/shifts.rs:+4:5: +4:6 + StorageDead(_6); // scope 0 at $DIR/shifts.rs:+4:5: +4:6 + return; // scope 0 at $DIR/shifts.rs:+5:2: +5:2 + } + + bb7 (cleanup): { + resume; // scope 0 at $DIR/shifts.rs:+0:1: +5:2 + } +} diff --git a/tests/mir-opt/building/shifts.shift_unsigned.built.after.mir b/tests/mir-opt/building/shifts.shift_unsigned.built.after.mir new file mode 100644 index 00000000000..04da2d20d24 --- /dev/null +++ b/tests/mir-opt/building/shifts.shift_unsigned.built.after.mir @@ -0,0 +1,135 @@ +// MIR for `shift_unsigned` after built + +fn shift_unsigned(_1: u8, _2: i128, _3: u8, _4: u32, _5: u128) -> ([u8; 3], [i128; 3]) { + debug small => _1; // in scope 0 at $DIR/shifts.rs:+0:19: +0:24 + debug big => _2; // in scope 0 at $DIR/shifts.rs:+0:30: +0:33 + debug a => _3; // in scope 0 at $DIR/shifts.rs:+0:41: +0:42 + debug b => _4; // in scope 0 at $DIR/shifts.rs:+0:48: +0:49 + debug c => _5; // in scope 0 at $DIR/shifts.rs:+0:56: +0:57 + let mut _0: ([u8; 3], [i128; 3]); // return place in scope 0 at $DIR/shifts.rs:+0:68: +0:88 + let mut _6: [u8; 3]; // in scope 0 at $DIR/shifts.rs:+2:9: +2:45 + let mut _7: u8; // in scope 0 at $DIR/shifts.rs:+2:10: +2:20 + let mut _8: u8; // in scope 0 at $DIR/shifts.rs:+2:10: +2:15 + let mut _9: u8; // in scope 0 at $DIR/shifts.rs:+2:19: +2:20 + let mut _10: bool; // in scope 0 at $DIR/shifts.rs:+2:10: +2:20 + let mut _11: u8; // in scope 0 at $DIR/shifts.rs:+2:22: +2:32 + let mut _12: u8; // in scope 0 at $DIR/shifts.rs:+2:22: +2:27 + let mut _13: u32; // in scope 0 at $DIR/shifts.rs:+2:31: +2:32 + let mut _14: bool; // in scope 0 at $DIR/shifts.rs:+2:22: +2:32 + let mut _15: u8; // in scope 0 at $DIR/shifts.rs:+2:34: +2:44 + let mut _16: u8; // in scope 0 at $DIR/shifts.rs:+2:34: +2:39 + let mut _17: u128; // in scope 0 at $DIR/shifts.rs:+2:43: +2:44 + let mut _18: bool; // in scope 0 at $DIR/shifts.rs:+2:34: +2:44 + let mut _19: [i128; 3]; // in scope 0 at $DIR/shifts.rs:+3:9: +3:39 + let mut _20: i128; // in scope 0 at $DIR/shifts.rs:+3:10: +3:18 + let mut _21: i128; // in scope 0 at $DIR/shifts.rs:+3:10: +3:13 + let mut _22: u8; // in scope 0 at $DIR/shifts.rs:+3:17: +3:18 + let mut _23: bool; // in scope 0 at $DIR/shifts.rs:+3:10: +3:18 + let mut _24: i128; // in scope 0 at $DIR/shifts.rs:+3:20: +3:28 + let mut _25: i128; // in scope 0 at $DIR/shifts.rs:+3:20: +3:23 + let mut _26: u32; // in scope 0 at $DIR/shifts.rs:+3:27: +3:28 + let mut _27: bool; // in scope 0 at $DIR/shifts.rs:+3:20: +3:28 + let mut _28: i128; // in scope 0 at $DIR/shifts.rs:+3:30: +3:38 + let mut _29: i128; // in scope 0 at $DIR/shifts.rs:+3:30: +3:33 + let mut _30: u128; // in scope 0 at $DIR/shifts.rs:+3:37: +3:38 + let mut _31: bool; // in scope 0 at $DIR/shifts.rs:+3:30: +3:38 + + bb0: { + StorageLive(_6); // scope 0 at $DIR/shifts.rs:+2:9: +2:45 + StorageLive(_7); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + StorageLive(_8); // scope 0 at $DIR/shifts.rs:+2:10: +2:15 + _8 = _1; // scope 0 at $DIR/shifts.rs:+2:10: +2:15 + StorageLive(_9); // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + _9 = _3; // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + _10 = Lt(_9, const 8_u8); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + assert(move _10, "attempt to shift right by `{}`, which would overflow", _9) -> [success: bb1, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + } + + bb1: { + _7 = Shr(move _8, move _9); // scope 0 at $DIR/shifts.rs:+2:10: +2:20 + StorageDead(_9); // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + StorageDead(_8); // scope 0 at $DIR/shifts.rs:+2:19: +2:20 + StorageLive(_11); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + StorageLive(_12); // scope 0 at $DIR/shifts.rs:+2:22: +2:27 + _12 = _1; // scope 0 at $DIR/shifts.rs:+2:22: +2:27 + StorageLive(_13); // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + _13 = _4; // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + _14 = Lt(_13, const 8_u32); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + assert(move _14, "attempt to shift right by `{}`, which would overflow", _13) -> [success: bb2, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + } + + bb2: { + _11 = Shr(move _12, move _13); // scope 0 at $DIR/shifts.rs:+2:22: +2:32 + StorageDead(_13); // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + StorageDead(_12); // scope 0 at $DIR/shifts.rs:+2:31: +2:32 + StorageLive(_15); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + StorageLive(_16); // scope 0 at $DIR/shifts.rs:+2:34: +2:39 + _16 = _1; // scope 0 at $DIR/shifts.rs:+2:34: +2:39 + StorageLive(_17); // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + _17 = _5; // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + _18 = Lt(_17, const 8_u128); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + assert(move _18, "attempt to shift right by `{}`, which would overflow", _17) -> [success: bb3, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + } + + bb3: { + _15 = Shr(move _16, move _17); // scope 0 at $DIR/shifts.rs:+2:34: +2:44 + StorageDead(_17); // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + StorageDead(_16); // scope 0 at $DIR/shifts.rs:+2:43: +2:44 + _6 = [move _7, move _11, move _15]; // scope 0 at $DIR/shifts.rs:+2:9: +2:45 + StorageDead(_15); // scope 0 at $DIR/shifts.rs:+2:44: +2:45 + StorageDead(_11); // scope 0 at $DIR/shifts.rs:+2:44: +2:45 + StorageDead(_7); // scope 0 at $DIR/shifts.rs:+2:44: +2:45 + StorageLive(_19); // scope 0 at $DIR/shifts.rs:+3:9: +3:39 + StorageLive(_20); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + StorageLive(_21); // scope 0 at $DIR/shifts.rs:+3:10: +3:13 + _21 = _2; // scope 0 at $DIR/shifts.rs:+3:10: +3:13 + StorageLive(_22); // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + _22 = _3; // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + _23 = Lt(_22, const 128_u8); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + assert(move _23, "attempt to shift left by `{}`, which would overflow", _22) -> [success: bb4, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + } + + bb4: { + _20 = Shl(move _21, move _22); // scope 0 at $DIR/shifts.rs:+3:10: +3:18 + StorageDead(_22); // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + StorageDead(_21); // scope 0 at $DIR/shifts.rs:+3:17: +3:18 + StorageLive(_24); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + StorageLive(_25); // scope 0 at $DIR/shifts.rs:+3:20: +3:23 + _25 = _2; // scope 0 at $DIR/shifts.rs:+3:20: +3:23 + StorageLive(_26); // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + _26 = _4; // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + _27 = Lt(_26, const 128_u32); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + assert(move _27, "attempt to shift left by `{}`, which would overflow", _26) -> [success: bb5, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + } + + bb5: { + _24 = Shl(move _25, move _26); // scope 0 at $DIR/shifts.rs:+3:20: +3:28 + StorageDead(_26); // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + StorageDead(_25); // scope 0 at $DIR/shifts.rs:+3:27: +3:28 + StorageLive(_28); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + StorageLive(_29); // scope 0 at $DIR/shifts.rs:+3:30: +3:33 + _29 = _2; // scope 0 at $DIR/shifts.rs:+3:30: +3:33 + StorageLive(_30); // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + _30 = _5; // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + _31 = Lt(_30, const 128_u128); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + assert(move _31, "attempt to shift left by `{}`, which would overflow", _30) -> [success: bb6, unwind: bb7]; // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + } + + bb6: { + _28 = Shl(move _29, move _30); // scope 0 at $DIR/shifts.rs:+3:30: +3:38 + StorageDead(_30); // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + StorageDead(_29); // scope 0 at $DIR/shifts.rs:+3:37: +3:38 + _19 = [move _20, move _24, move _28]; // scope 0 at $DIR/shifts.rs:+3:9: +3:39 + StorageDead(_28); // scope 0 at $DIR/shifts.rs:+3:38: +3:39 + StorageDead(_24); // scope 0 at $DIR/shifts.rs:+3:38: +3:39 + StorageDead(_20); // scope 0 at $DIR/shifts.rs:+3:38: +3:39 + _0 = (move _6, move _19); // scope 0 at $DIR/shifts.rs:+1:5: +4:6 + StorageDead(_19); // scope 0 at $DIR/shifts.rs:+4:5: +4:6 + StorageDead(_6); // scope 0 at $DIR/shifts.rs:+4:5: +4:6 + return; // scope 0 at $DIR/shifts.rs:+5:2: +5:2 + } + + bb7 (cleanup): { + resume; // scope 0 at $DIR/shifts.rs:+0:1: +5:2 + } +} diff --git a/tests/mir-opt/const_prop/transmute.from_char.ConstProp.diff b/tests/mir-opt/const_prop/transmute.from_char.ConstProp.diff new file mode 100644 index 00000000000..933dfbb5166 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.from_char.ConstProp.diff @@ -0,0 +1,15 @@ +- // MIR for `from_char` before ConstProp ++ // MIR for `from_char` after ConstProp + + fn from_char() -> i32 { + let mut _0: i32; // return place in scope 0 at $DIR/transmute.rs:+0:23: +0:26 + scope 1 { + } + + bb0: { +- _0 = const 'R' as i32 (Transmute); // scope 1 at $DIR/transmute.rs:+1:14: +1:28 ++ _0 = const 82_i32; // scope 1 at $DIR/transmute.rs:+1:14: +1:28 + return; // scope 0 at $DIR/transmute.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.invalid_bool.ConstProp.diff b/tests/mir-opt/const_prop/transmute.invalid_bool.ConstProp.diff new file mode 100644 index 00000000000..f3474855f02 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.invalid_bool.ConstProp.diff @@ -0,0 +1,14 @@ +- // MIR for `invalid_bool` before ConstProp ++ // MIR for `invalid_bool` after ConstProp + + fn invalid_bool() -> bool { + let mut _0: bool; // return place in scope 0 at $DIR/transmute.rs:+0:33: +0:37 + scope 1 { + } + + bb0: { + _0 = const -1_i8 as bool (Transmute); // scope 1 at $DIR/transmute.rs:+1:14: +1:30 + return; // scope 0 at $DIR/transmute.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.invalid_char.ConstProp.diff b/tests/mir-opt/const_prop/transmute.invalid_char.ConstProp.diff new file mode 100644 index 00000000000..ba087e226c9 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.invalid_char.ConstProp.diff @@ -0,0 +1,14 @@ +- // MIR for `invalid_char` before ConstProp ++ // MIR for `invalid_char` after ConstProp + + fn invalid_char() -> char { + let mut _0: char; // return place in scope 0 at $DIR/transmute.rs:+0:33: +0:37 + scope 1 { + } + + bb0: { + _0 = const _ as char (Transmute); // scope 1 at $DIR/transmute.rs:+1:14: +1:33 + return; // scope 0 at $DIR/transmute.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.less_as_i8.ConstProp.diff b/tests/mir-opt/const_prop/transmute.less_as_i8.ConstProp.diff new file mode 100644 index 00000000000..76d464789c1 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.less_as_i8.ConstProp.diff @@ -0,0 +1,23 @@ +- // MIR for `less_as_i8` before ConstProp ++ // MIR for `less_as_i8` after ConstProp + + fn less_as_i8() -> i8 { + let mut _0: i8; // return place in scope 0 at $DIR/transmute.rs:+0:24: +0:26 + let mut _1: std::cmp::Ordering; // in scope 0 at $DIR/transmute.rs:+1:24: +1:48 + scope 1 { + } + + bb0: { + StorageLive(_1); // scope 1 at $DIR/transmute.rs:+1:24: +1:48 +- _1 = Less; // scope 1 at $DIR/transmute.rs:+1:24: +1:48 +- _0 = move _1 as i8 (Transmute); // scope 1 at $DIR/transmute.rs:+1:14: +1:49 ++ _1 = const Less; // scope 1 at $DIR/transmute.rs:+1:24: +1:48 ++ // mir::Constant ++ // + span: no-location ++ // + literal: Const { ty: std::cmp::Ordering, val: Value(Scalar(0xff)) } ++ _0 = const -1_i8; // scope 1 at $DIR/transmute.rs:+1:14: +1:49 + StorageDead(_1); // scope 1 at $DIR/transmute.rs:+1:48: +1:49 + return; // scope 0 at $DIR/transmute.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.rs b/tests/mir-opt/const_prop/transmute.rs new file mode 100644 index 00000000000..b753cdccd60 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.rs @@ -0,0 +1,61 @@ +// unit-test: ConstProp +// compile-flags: -O --crate-type=lib + +use std::mem::transmute; + +// EMIT_MIR transmute.less_as_i8.ConstProp.diff +pub fn less_as_i8() -> i8 { + unsafe { transmute(std::cmp::Ordering::Less) } +} + +// EMIT_MIR transmute.from_char.ConstProp.diff +pub fn from_char() -> i32 { + unsafe { transmute('R') } +} + +// EMIT_MIR transmute.valid_char.ConstProp.diff +pub fn valid_char() -> char { + unsafe { transmute(0x52_u32) } +} + +// EMIT_MIR transmute.invalid_char.ConstProp.diff +pub unsafe fn invalid_char() -> char { + unsafe { transmute(i32::MAX) } +} + +// EMIT_MIR transmute.invalid_bool.ConstProp.diff +pub unsafe fn invalid_bool() -> bool { + unsafe { transmute(-1_i8) } +} + +// EMIT_MIR transmute.undef_union_as_integer.ConstProp.diff +pub unsafe fn undef_union_as_integer() -> u32 { + union Union32 { value: u32, unit: () } + unsafe { transmute(Union32 { unit: () }) } +} + +// EMIT_MIR transmute.unreachable_direct.ConstProp.diff +pub unsafe fn unreachable_direct() -> ! { + let x: Never = unsafe { transmute(()) }; + match x {} +} + +// EMIT_MIR transmute.unreachable_ref.ConstProp.diff +pub unsafe fn unreachable_ref() -> ! { + let x: &Never = unsafe { transmute(1_usize) }; + match *x {} +} + +// EMIT_MIR transmute.unreachable_mut.ConstProp.diff +pub unsafe fn unreachable_mut() -> ! { + let x: &mut Never = unsafe { transmute(1_usize) }; + match *x {} +} + +// EMIT_MIR transmute.unreachable_box.ConstProp.diff +pub unsafe fn unreachable_box() -> ! { + let x: Box<Never> = unsafe { transmute(1_usize) }; + match *x {} +} + +enum Never {} diff --git a/tests/mir-opt/const_prop/transmute.undef_union_as_integer.ConstProp.diff b/tests/mir-opt/const_prop/transmute.undef_union_as_integer.ConstProp.diff new file mode 100644 index 00000000000..538b1f26e4c --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.undef_union_as_integer.ConstProp.diff @@ -0,0 +1,22 @@ +- // MIR for `undef_union_as_integer` before ConstProp ++ // MIR for `undef_union_as_integer` after ConstProp + + fn undef_union_as_integer() -> u32 { + let mut _0: u32; // return place in scope 0 at $DIR/transmute.rs:+0:43: +0:46 + let mut _1: undef_union_as_integer::Union32; // in scope 0 at $DIR/transmute.rs:+2:24: +2:44 + let mut _2: (); // in scope 0 at $DIR/transmute.rs:+2:40: +2:42 + scope 1 { + } + + bb0: { + StorageLive(_1); // scope 1 at $DIR/transmute.rs:+2:24: +2:44 + StorageLive(_2); // scope 1 at $DIR/transmute.rs:+2:40: +2:42 + _2 = (); // scope 1 at $DIR/transmute.rs:+2:40: +2:42 + _1 = Union32 { value: move _2 }; // scope 1 at $DIR/transmute.rs:+2:24: +2:44 + StorageDead(_2); // scope 1 at $DIR/transmute.rs:+2:43: +2:44 + _0 = move _1 as u32 (Transmute); // scope 1 at $DIR/transmute.rs:+2:14: +2:45 + StorageDead(_1); // scope 1 at $DIR/transmute.rs:+2:44: +2:45 + return; // scope 0 at $DIR/transmute.rs:+3:2: +3:2 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.unreachable_box.ConstProp.diff b/tests/mir-opt/const_prop/transmute.unreachable_box.ConstProp.diff new file mode 100644 index 00000000000..8bf97996a67 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.unreachable_box.ConstProp.diff @@ -0,0 +1,23 @@ +- // MIR for `unreachable_box` before ConstProp ++ // MIR for `unreachable_box` after ConstProp + + fn unreachable_box() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/transmute.rs:+0:36: +0:37 + let mut _1: !; // in scope 0 at $DIR/transmute.rs:+0:38: +3:2 + let _2: std::boxed::Box<Never>; // in scope 0 at $DIR/transmute.rs:+1:9: +1:10 + let mut _3: !; // in scope 0 at $DIR/transmute.rs:+2:5: +2:16 + scope 1 { + debug x => _2; // in scope 1 at $DIR/transmute.rs:+1:9: +1:10 + } + scope 2 { + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/transmute.rs:+0:38: +3:2 + StorageLive(_2); // scope 0 at $DIR/transmute.rs:+1:9: +1:10 + _2 = const 1_usize as std::boxed::Box<Never> (Transmute); // scope 2 at $DIR/transmute.rs:+1:34: +1:52 + StorageLive(_3); // scope 1 at $DIR/transmute.rs:+2:5: +2:16 + unreachable; // scope 1 at $DIR/transmute.rs:+2:11: +2:13 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.unreachable_direct.ConstProp.diff b/tests/mir-opt/const_prop/transmute.unreachable_direct.ConstProp.diff new file mode 100644 index 00000000000..81b7b368993 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.unreachable_direct.ConstProp.diff @@ -0,0 +1,25 @@ +- // MIR for `unreachable_direct` before ConstProp ++ // MIR for `unreachable_direct` after ConstProp + + fn unreachable_direct() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/transmute.rs:+0:39: +0:40 + let mut _1: !; // in scope 0 at $DIR/transmute.rs:+0:41: +3:2 + let _2: Never; // in scope 0 at $DIR/transmute.rs:+1:9: +1:10 + let mut _3: (); // in scope 0 at $DIR/transmute.rs:+1:39: +1:41 + let mut _4: !; // in scope 0 at $DIR/transmute.rs:+2:5: +2:15 + scope 1 { + debug x => _2; // in scope 1 at $DIR/transmute.rs:+1:9: +1:10 + } + scope 2 { + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/transmute.rs:+0:41: +3:2 + StorageLive(_2); // scope 0 at $DIR/transmute.rs:+1:9: +1:10 + StorageLive(_3); // scope 2 at $DIR/transmute.rs:+1:39: +1:41 + _3 = (); // scope 2 at $DIR/transmute.rs:+1:39: +1:41 + _2 = move _3 as Never (Transmute); // scope 2 at $DIR/transmute.rs:+1:29: +1:42 + unreachable; // scope 2 at $DIR/transmute.rs:+1:29: +1:42 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.unreachable_mut.ConstProp.diff b/tests/mir-opt/const_prop/transmute.unreachable_mut.ConstProp.diff new file mode 100644 index 00000000000..34f7aea8ed2 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.unreachable_mut.ConstProp.diff @@ -0,0 +1,27 @@ +- // MIR for `unreachable_mut` before ConstProp ++ // MIR for `unreachable_mut` after ConstProp + + fn unreachable_mut() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/transmute.rs:+0:36: +0:37 + let mut _1: !; // in scope 0 at $DIR/transmute.rs:+0:38: +3:2 + let _2: &mut Never; // in scope 0 at $DIR/transmute.rs:+1:9: +1:10 + let mut _3: &mut Never; // in scope 0 at $DIR/transmute.rs:+1:34: +1:52 + let mut _4: !; // in scope 0 at $DIR/transmute.rs:+2:5: +2:16 + scope 1 { + debug x => _2; // in scope 1 at $DIR/transmute.rs:+1:9: +1:10 + } + scope 2 { + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/transmute.rs:+0:38: +3:2 + StorageLive(_2); // scope 0 at $DIR/transmute.rs:+1:9: +1:10 + StorageLive(_3); // scope 0 at $DIR/transmute.rs:+1:34: +1:52 + _3 = const 1_usize as &mut Never (Transmute); // scope 2 at $DIR/transmute.rs:+1:34: +1:52 + _2 = &mut (*_3); // scope 0 at $DIR/transmute.rs:+1:34: +1:52 + StorageDead(_3); // scope 0 at $DIR/transmute.rs:+1:54: +1:55 + StorageLive(_4); // scope 1 at $DIR/transmute.rs:+2:5: +2:16 + unreachable; // scope 1 at $DIR/transmute.rs:+2:11: +2:13 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.unreachable_ref.ConstProp.diff b/tests/mir-opt/const_prop/transmute.unreachable_ref.ConstProp.diff new file mode 100644 index 00000000000..ff95f2a0b94 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.unreachable_ref.ConstProp.diff @@ -0,0 +1,23 @@ +- // MIR for `unreachable_ref` before ConstProp ++ // MIR for `unreachable_ref` after ConstProp + + fn unreachable_ref() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/transmute.rs:+0:36: +0:37 + let mut _1: !; // in scope 0 at $DIR/transmute.rs:+0:38: +3:2 + let _2: &Never; // in scope 0 at $DIR/transmute.rs:+1:9: +1:10 + let mut _3: !; // in scope 0 at $DIR/transmute.rs:+2:5: +2:16 + scope 1 { + debug x => _2; // in scope 1 at $DIR/transmute.rs:+1:9: +1:10 + } + scope 2 { + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/transmute.rs:+0:38: +3:2 + StorageLive(_2); // scope 0 at $DIR/transmute.rs:+1:9: +1:10 + _2 = const 1_usize as &Never (Transmute); // scope 2 at $DIR/transmute.rs:+1:30: +1:48 + StorageLive(_3); // scope 1 at $DIR/transmute.rs:+2:5: +2:16 + unreachable; // scope 1 at $DIR/transmute.rs:+2:11: +2:13 + } + } + diff --git a/tests/mir-opt/const_prop/transmute.valid_char.ConstProp.diff b/tests/mir-opt/const_prop/transmute.valid_char.ConstProp.diff new file mode 100644 index 00000000000..eac33b73003 --- /dev/null +++ b/tests/mir-opt/const_prop/transmute.valid_char.ConstProp.diff @@ -0,0 +1,15 @@ +- // MIR for `valid_char` before ConstProp ++ // MIR for `valid_char` after ConstProp + + fn valid_char() -> char { + let mut _0: char; // return place in scope 0 at $DIR/transmute.rs:+0:24: +0:28 + scope 1 { + } + + bb0: { +- _0 = const 82_u32 as char (Transmute); // scope 1 at $DIR/transmute.rs:+1:14: +1:33 ++ _0 = const 'R'; // scope 1 at $DIR/transmute.rs:+1:14: +1:33 + return; // scope 0 at $DIR/transmute.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/issue_101973.inner.ConstProp.diff b/tests/mir-opt/issue_101973.inner.ConstProp.diff index fb0b3866e69..b377a65b964 100644 --- a/tests/mir-opt/issue_101973.inner.ConstProp.diff +++ b/tests/mir-opt/issue_101973.inner.ConstProp.diff @@ -12,9 +12,9 @@ let mut _7: u32; // in scope 0 at $DIR/issue_101973.rs:+1:31: +1:52 let mut _8: u32; // in scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 let mut _9: u32; // in scope 0 at $DIR/issue_101973.rs:+1:33: +1:39 - let mut _10: i32; // in scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 + let mut _10: u32; // in scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 let mut _11: bool; // in scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 - let mut _12: i32; // in scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 + let mut _12: u32; // in scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 let mut _13: bool; // in scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 scope 1 (inlined imm8) { // at $DIR/issue_101973.rs:14:5: 14:17 debug x => _1; // in scope 1 at $DIR/issue_101973.rs:5:13: 5:14 @@ -43,24 +43,24 @@ StorageLive(_6); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 StorageLive(_7); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:52 StorageLive(_8); // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 -- _10 = BitAnd(const 8_i32, const -32_i32); // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 -- _11 = Ne(move _10, const 0_i32); // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 -- assert(!move _11, "attempt to shift right by `{}`, which would overflow", const 8_i32) -> bb1; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 -+ _10 = const 0_i32; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 -+ _11 = const false; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 -+ assert(!const false, "attempt to shift right by `{}`, which would overflow", const 8_i32) -> bb1; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 +- _10 = const 8_i32 as u32 (IntToInt); // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 +- _11 = Lt(move _10, const 32_u32); // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 +- assert(move _11, "attempt to shift right by `{}`, which would overflow", const 8_i32) -> bb1; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 ++ _10 = const 8_u32; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 ++ _11 = const true; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 ++ assert(const true, "attempt to shift right by `{}`, which would overflow", const 8_i32) -> bb1; // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 } bb1: { _8 = Shr(_1, const 8_i32); // scope 0 at $DIR/issue_101973.rs:+1:32: +1:45 _7 = BitAnd(move _8, const 15_u32); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:52 StorageDead(_8); // scope 0 at $DIR/issue_101973.rs:+1:51: +1:52 -- _12 = BitAnd(const 1_i32, const -32_i32); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 -- _13 = Ne(move _12, const 0_i32); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 -- assert(!move _13, "attempt to shift left by `{}`, which would overflow", const 1_i32) -> bb2; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 -+ _12 = const 0_i32; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 -+ _13 = const false; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 -+ assert(!const false, "attempt to shift left by `{}`, which would overflow", const 1_i32) -> bb2; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 +- _12 = const 1_i32 as u32 (IntToInt); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 +- _13 = Lt(move _12, const 32_u32); // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 +- assert(move _13, "attempt to shift left by `{}`, which would overflow", const 1_i32) -> bb2; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 ++ _12 = const 1_u32; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 ++ _13 = const true; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 ++ assert(const true, "attempt to shift left by `{}`, which would overflow", const 1_i32) -> bb2; // scope 0 at $DIR/issue_101973.rs:+1:31: +1:57 } bb2: { diff --git a/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff b/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff index bcda1288045..8e6e6fc0ec2 100644 --- a/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff +++ b/tests/mir-opt/issues/issue_75439.foo.MatchBranchSimplification.diff @@ -24,61 +24,49 @@ StorageLive(_2); // scope 0 at $DIR/issue_75439.rs:+2:9: +2:15 StorageLive(_3); // scope 2 at $DIR/issue_75439.rs:+2:47: +2:52 _3 = _1; // scope 2 at $DIR/issue_75439.rs:+2:47: +2:52 - _2 = transmute::<[u8; 16], [u32; 4]>(move _3) -> bb1; // scope 2 at $DIR/issue_75439.rs:+2:37: +2:53 - // mir::Constant - // + span: $DIR/issue_75439.rs:8:37: 8:46 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn([u8; 16]) -> [u32; 4] {transmute::<[u8; 16], [u32; 4]>}, val: Value(<ZST>) } + _2 = move _3 as [u32; 4] (Transmute); // scope 2 at $DIR/issue_75439.rs:+2:37: +2:53 + StorageDead(_3); // scope 2 at $DIR/issue_75439.rs:+2:52: +2:53 + switchInt(_2[0 of 4]) -> [0: bb1, otherwise: bb6]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 } bb1: { - StorageDead(_3); // scope 2 at $DIR/issue_75439.rs:+2:52: +2:53 - switchInt(_2[0 of 4]) -> [0: bb2, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 + switchInt(_2[1 of 4]) -> [0: bb2, otherwise: bb6]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 } bb2: { - switchInt(_2[1 of 4]) -> [0: bb3, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 + switchInt(_2[2 of 4]) -> [0: bb4, 4294901760: bb5, otherwise: bb6]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 } bb3: { - switchInt(_2[2 of 4]) -> [0: bb5, 4294901760: bb6, otherwise: bb8]; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 - } - - bb4: { StorageLive(_5); // scope 3 at $DIR/issue_75439.rs:+5:14: +5:38 StorageLive(_6); // scope 4 at $DIR/issue_75439.rs:+5:33: +5:35 _6 = _4; // scope 4 at $DIR/issue_75439.rs:+5:33: +5:35 - _5 = transmute::<u32, [u8; 4]>(move _6) -> bb7; // scope 4 at $DIR/issue_75439.rs:+5:23: +5:36 - // mir::Constant - // + span: $DIR/issue_75439.rs:11:23: 11:32 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(u32) -> [u8; 4] {transmute::<u32, [u8; 4]>}, val: Value(<ZST>) } + _5 = move _6 as [u8; 4] (Transmute); // scope 4 at $DIR/issue_75439.rs:+5:23: +5:36 + StorageDead(_6); // scope 4 at $DIR/issue_75439.rs:+5:35: +5:36 + _0 = Option::<[u8; 4]>::Some(move _5); // scope 3 at $DIR/issue_75439.rs:+5:9: +5:39 + StorageDead(_5); // scope 3 at $DIR/issue_75439.rs:+5:38: +5:39 + StorageDead(_4); // scope 1 at $DIR/issue_75439.rs:+6:5: +6:6 + goto -> bb7; // scope 1 at $DIR/issue_75439.rs:+4:5: +8:6 } - bb5: { + bb4: { StorageLive(_4); // scope 3 at $DIR/issue_75439.rs:+4:27: +4:29 _4 = _2[3 of 4]; // scope 3 at $DIR/issue_75439.rs:+4:27: +4:29 - goto -> bb4; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 + goto -> bb3; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 } - bb6: { + bb5: { StorageLive(_4); // scope 3 at $DIR/issue_75439.rs:+4:27: +4:29 _4 = _2[3 of 4]; // scope 3 at $DIR/issue_75439.rs:+4:27: +4:29 - goto -> bb4; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 + goto -> bb3; // scope 3 at $DIR/issue_75439.rs:+4:12: +4:30 } - bb7: { - StorageDead(_6); // scope 4 at $DIR/issue_75439.rs:+5:35: +5:36 - _0 = Option::<[u8; 4]>::Some(move _5); // scope 3 at $DIR/issue_75439.rs:+5:9: +5:39 - StorageDead(_5); // scope 3 at $DIR/issue_75439.rs:+5:38: +5:39 - StorageDead(_4); // scope 1 at $DIR/issue_75439.rs:+6:5: +6:6 - goto -> bb9; // scope 1 at $DIR/issue_75439.rs:+4:5: +8:6 - } - - bb8: { + bb6: { _0 = Option::<[u8; 4]>::None; // scope 1 at $DIR/issue_75439.rs:+7:9: +7:13 - goto -> bb9; // scope 1 at $DIR/issue_75439.rs:+4:5: +8:6 + goto -> bb7; // scope 1 at $DIR/issue_75439.rs:+4:5: +8:6 } - bb9: { + bb7: { StorageDead(_2); // scope 0 at $DIR/issue_75439.rs:+9:1: +9:2 return; // scope 0 at $DIR/issue_75439.rs:+9:2: +9:2 } diff --git a/tests/mir-opt/lower_intrinsics.assume.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.assume.LowerIntrinsics.diff index d9898d8e0f0..5c5a9e90a9d 100644 --- a/tests/mir-opt/lower_intrinsics.assume.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.assume.LowerIntrinsics.diff @@ -11,7 +11,7 @@ StorageLive(_1); // scope 1 at $DIR/lower_intrinsics.rs:+2:9: +2:38 - _1 = std::intrinsics::assume(const true) -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+2:9: +2:38 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:72:9: 72:32 +- // + span: $DIR/lower_intrinsics.rs:105:9: 105:32 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(bool) {std::intrinsics::assume}, val: Value(<ZST>) } + assume(const true); // scope 1 at $DIR/lower_intrinsics.rs:+2:9: +2:38 + goto -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+2:9: +2:38 diff --git a/tests/mir-opt/lower_intrinsics.discriminant.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.discriminant.LowerIntrinsics.diff index d962ef8cb12..87960521bb4 100644 --- a/tests/mir-opt/lower_intrinsics.discriminant.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.discriminant.LowerIntrinsics.diff @@ -31,7 +31,7 @@ _3 = &(*_4); // scope 0 at $DIR/lower_intrinsics.rs:+1:42: +1:44 - _2 = discriminant_value::<T>(move _3) -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:45 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:49:5: 49:41 +- // + span: $DIR/lower_intrinsics.rs:82:5: 82:41 - // + literal: Const { ty: for<'a> extern "rust-intrinsic" fn(&'a T) -> <T as DiscriminantKind>::Discriminant {discriminant_value::<T>}, val: Value(<ZST>) } + _2 = discriminant((*_3)); // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:45 + goto -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:5: +1:45 @@ -46,13 +46,13 @@ StorageLive(_7); // scope 0 at $DIR/lower_intrinsics.rs:+2:42: +2:44 _19 = const _; // scope 0 at $DIR/lower_intrinsics.rs:+2:42: +2:44 // mir::Constant - // + span: $DIR/lower_intrinsics.rs:50:42: 50:44 + // + span: $DIR/lower_intrinsics.rs:83:42: 83:44 // + literal: Const { ty: &i32, val: Unevaluated(discriminant, [T], Some(promoted[2])) } _7 = &(*_19); // scope 0 at $DIR/lower_intrinsics.rs:+2:42: +2:44 _6 = &(*_7); // scope 0 at $DIR/lower_intrinsics.rs:+2:42: +2:44 - _5 = discriminant_value::<i32>(move _6) -> bb2; // scope 0 at $DIR/lower_intrinsics.rs:+2:5: +2:45 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:50:5: 50:41 +- // + span: $DIR/lower_intrinsics.rs:83:5: 83:41 - // + literal: Const { ty: for<'a> extern "rust-intrinsic" fn(&'a i32) -> <i32 as DiscriminantKind>::Discriminant {discriminant_value::<i32>}, val: Value(<ZST>) } + _5 = discriminant((*_6)); // scope 0 at $DIR/lower_intrinsics.rs:+2:5: +2:45 + goto -> bb2; // scope 0 at $DIR/lower_intrinsics.rs:+2:5: +2:45 @@ -67,13 +67,13 @@ StorageLive(_11); // scope 0 at $DIR/lower_intrinsics.rs:+3:42: +3:45 _18 = const _; // scope 0 at $DIR/lower_intrinsics.rs:+3:42: +3:45 // mir::Constant - // + span: $DIR/lower_intrinsics.rs:51:42: 51:45 + // + span: $DIR/lower_intrinsics.rs:84:42: 84:45 // + literal: Const { ty: &(), val: Unevaluated(discriminant, [T], Some(promoted[1])) } _11 = &(*_18); // scope 0 at $DIR/lower_intrinsics.rs:+3:42: +3:45 _10 = &(*_11); // scope 0 at $DIR/lower_intrinsics.rs:+3:42: +3:45 - _9 = discriminant_value::<()>(move _10) -> bb3; // scope 0 at $DIR/lower_intrinsics.rs:+3:5: +3:46 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:51:5: 51:41 +- // + span: $DIR/lower_intrinsics.rs:84:5: 84:41 - // + literal: Const { ty: for<'a> extern "rust-intrinsic" fn(&'a ()) -> <() as DiscriminantKind>::Discriminant {discriminant_value::<()>}, val: Value(<ZST>) } + _9 = discriminant((*_10)); // scope 0 at $DIR/lower_intrinsics.rs:+3:5: +3:46 + goto -> bb3; // scope 0 at $DIR/lower_intrinsics.rs:+3:5: +3:46 @@ -88,13 +88,13 @@ StorageLive(_15); // scope 0 at $DIR/lower_intrinsics.rs:+4:42: +4:47 _17 = const _; // scope 0 at $DIR/lower_intrinsics.rs:+4:42: +4:47 // mir::Constant - // + span: $DIR/lower_intrinsics.rs:52:42: 52:47 + // + span: $DIR/lower_intrinsics.rs:85:42: 85:47 // + literal: Const { ty: &E, val: Unevaluated(discriminant, [T], Some(promoted[0])) } _15 = &(*_17); // scope 0 at $DIR/lower_intrinsics.rs:+4:42: +4:47 _14 = &(*_15); // scope 0 at $DIR/lower_intrinsics.rs:+4:42: +4:47 - _13 = discriminant_value::<E>(move _14) -> bb4; // scope 0 at $DIR/lower_intrinsics.rs:+4:5: +4:48 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:52:5: 52:41 +- // + span: $DIR/lower_intrinsics.rs:85:5: 85:41 - // + literal: Const { ty: for<'a> extern "rust-intrinsic" fn(&'a E) -> <E as DiscriminantKind>::Discriminant {discriminant_value::<E>}, val: Value(<ZST>) } + _13 = discriminant((*_14)); // scope 0 at $DIR/lower_intrinsics.rs:+4:5: +4:48 + goto -> bb4; // scope 0 at $DIR/lower_intrinsics.rs:+4:5: +4:48 diff --git a/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff index 5c972a00e46..15cce7f4a2c 100644 --- a/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.f_copy_nonoverlapping.LowerIntrinsics.diff @@ -49,7 +49,7 @@ StorageDead(_9); // scope 3 at $DIR/lower_intrinsics.rs:+4:90: +4:91 - _3 = copy_nonoverlapping::<i32>(move _4, move _8, const 0_usize) -> bb1; // scope 3 at $DIR/lower_intrinsics.rs:+4:9: +4:95 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:65:9: 65:28 +- // + span: $DIR/lower_intrinsics.rs:98:9: 98:28 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(*const i32, *mut i32, usize) {copy_nonoverlapping::<i32>}, val: Value(<ZST>) } + copy_nonoverlapping(dst = move _8, src = move _4, count = const 0_usize); // scope 3 at $DIR/lower_intrinsics.rs:+4:9: +4:95 + goto -> bb1; // scope 3 at $DIR/lower_intrinsics.rs:+4:9: +4:95 diff --git a/tests/mir-opt/lower_intrinsics.option_payload.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.option_payload.LowerIntrinsics.diff index e535141e772..c563703b250 100644 --- a/tests/mir-opt/lower_intrinsics.option_payload.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.option_payload.LowerIntrinsics.diff @@ -24,7 +24,7 @@ _4 = &raw const (*_1); // scope 1 at $DIR/lower_intrinsics.rs:+2:55: +2:56 - _3 = option_payload_ptr::<usize>(move _4) -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+2:18: +2:57 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:99:18: 99:54 +- // + span: $DIR/lower_intrinsics.rs:132:18: 132:54 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(*const Option<usize>) -> *const usize {option_payload_ptr::<usize>}, val: Value(<ZST>) } + _3 = &raw const (((*_4) as Some).0: usize); // scope 1 at $DIR/lower_intrinsics.rs:+2:18: +2:57 + goto -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+2:18: +2:57 @@ -37,7 +37,7 @@ _6 = &raw const (*_2); // scope 2 at $DIR/lower_intrinsics.rs:+3:55: +3:56 - _5 = option_payload_ptr::<String>(move _6) -> bb2; // scope 2 at $DIR/lower_intrinsics.rs:+3:18: +3:57 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:100:18: 100:54 +- // + span: $DIR/lower_intrinsics.rs:133:18: 133:54 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(*const Option<String>) -> *const String {option_payload_ptr::<String>}, val: Value(<ZST>) } + _5 = &raw const (((*_6) as Some).0: std::string::String); // scope 2 at $DIR/lower_intrinsics.rs:+3:18: +3:57 + goto -> bb2; // scope 2 at $DIR/lower_intrinsics.rs:+3:18: +3:57 diff --git a/tests/mir-opt/lower_intrinsics.read_via_copy_primitive.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.read_via_copy_primitive.LowerIntrinsics.diff index 27fceeedf6e..f2f676843b2 100644 --- a/tests/mir-opt/lower_intrinsics.read_via_copy_primitive.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.read_via_copy_primitive.LowerIntrinsics.diff @@ -13,7 +13,7 @@ _2 = &raw const (*_1); // scope 1 at $DIR/lower_intrinsics.rs:+1:46: +1:47 - _0 = read_via_copy::<i32>(move _2) -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:48 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:85:14: 85:45 +- // + span: $DIR/lower_intrinsics.rs:118:14: 118:45 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(*const i32) -> i32 {read_via_copy::<i32>}, val: Value(<ZST>) } + _0 = (*_2); // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:48 + goto -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:48 diff --git a/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.diff index 610c67d2fec..3ad21283fa4 100644 --- a/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.read_via_copy_uninhabited.LowerIntrinsics.diff @@ -13,7 +13,7 @@ _2 = &raw const (*_1); // scope 1 at $DIR/lower_intrinsics.rs:+1:46: +1:47 - _0 = read_via_copy::<Never>(move _2); // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:48 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:90:14: 90:45 +- // + span: $DIR/lower_intrinsics.rs:123:14: 123:45 - // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(*const Never) -> Never {read_via_copy::<Never>}, val: Value(<ZST>) } + unreachable; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:48 } diff --git a/tests/mir-opt/lower_intrinsics.rs b/tests/mir-opt/lower_intrinsics.rs index f07e2816f4f..ec215c9a664 100644 --- a/tests/mir-opt/lower_intrinsics.rs +++ b/tests/mir-opt/lower_intrinsics.rs @@ -38,6 +38,39 @@ pub fn non_const<T>() -> usize { size_of_t() } +// EMIT_MIR lower_intrinsics.transmute_inhabited.LowerIntrinsics.diff +pub fn transmute_inhabited(c: std::cmp::Ordering) -> i8 { + unsafe { std::mem::transmute(c) } +} + +// EMIT_MIR lower_intrinsics.transmute_uninhabited.LowerIntrinsics.diff +pub unsafe fn transmute_uninhabited(u: ()) -> Never { + unsafe { std::mem::transmute::<(), Never>(u) } +} + +// EMIT_MIR lower_intrinsics.transmute_ref_dst.LowerIntrinsics.diff +pub unsafe fn transmute_ref_dst<T: ?Sized>(u: &T) -> *const T { + unsafe { std::mem::transmute(u) } +} + +// EMIT_MIR lower_intrinsics.transmute_to_ref_uninhabited.LowerIntrinsics.diff +pub unsafe fn transmute_to_ref_uninhabited() -> ! { + let x: &Never = std::mem::transmute(1usize); + match *x {} +} + +// EMIT_MIR lower_intrinsics.transmute_to_mut_uninhabited.LowerIntrinsics.diff +pub unsafe fn transmute_to_mut_uninhabited() -> ! { + let x: &mut Never = std::mem::transmute(1usize); + match *x {} +} + +// EMIT_MIR lower_intrinsics.transmute_to_box_uninhabited.LowerIntrinsics.diff +pub unsafe fn transmute_to_box_uninhabited() -> ! { + let x: Box<Never> = std::mem::transmute(1usize); + match *x {} +} + pub enum E { A, B, diff --git a/tests/mir-opt/lower_intrinsics.transmute_inhabited.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.transmute_inhabited.LowerIntrinsics.diff new file mode 100644 index 00000000000..814368ec021 --- /dev/null +++ b/tests/mir-opt/lower_intrinsics.transmute_inhabited.LowerIntrinsics.diff @@ -0,0 +1,27 @@ +- // MIR for `transmute_inhabited` before LowerIntrinsics ++ // MIR for `transmute_inhabited` after LowerIntrinsics + + fn transmute_inhabited(_1: std::cmp::Ordering) -> i8 { + debug c => _1; // in scope 0 at $DIR/lower_intrinsics.rs:+0:28: +0:29 + let mut _0: i8; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:54: +0:56 + let mut _2: std::cmp::Ordering; // in scope 0 at $DIR/lower_intrinsics.rs:+1:34: +1:35 + scope 1 { + } + + bb0: { + StorageLive(_2); // scope 1 at $DIR/lower_intrinsics.rs:+1:34: +1:35 + _2 = _1; // scope 1 at $DIR/lower_intrinsics.rs:+1:34: +1:35 +- _0 = transmute::<std::cmp::Ordering, i8>(move _2) -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:36 +- // mir::Constant +- // + span: $DIR/lower_intrinsics.rs:43:14: 43:33 +- // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(std::cmp::Ordering) -> i8 {transmute::<std::cmp::Ordering, i8>}, val: Value(<ZST>) } ++ _0 = move _2 as i8 (Transmute); // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:36 ++ goto -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:36 + } + + bb1: { + StorageDead(_2); // scope 1 at $DIR/lower_intrinsics.rs:+1:35: +1:36 + return; // scope 0 at $DIR/lower_intrinsics.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/lower_intrinsics.transmute_ref_dst.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.transmute_ref_dst.LowerIntrinsics.diff new file mode 100644 index 00000000000..5440c7a4c8e --- /dev/null +++ b/tests/mir-opt/lower_intrinsics.transmute_ref_dst.LowerIntrinsics.diff @@ -0,0 +1,27 @@ +- // MIR for `transmute_ref_dst` before LowerIntrinsics ++ // MIR for `transmute_ref_dst` after LowerIntrinsics + + fn transmute_ref_dst(_1: &T) -> *const T { + debug u => _1; // in scope 0 at $DIR/lower_intrinsics.rs:+0:44: +0:45 + let mut _0: *const T; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:54: +0:62 + let mut _2: &T; // in scope 0 at $DIR/lower_intrinsics.rs:+1:34: +1:35 + scope 1 { + } + + bb0: { + StorageLive(_2); // scope 1 at $DIR/lower_intrinsics.rs:+1:34: +1:35 + _2 = _1; // scope 1 at $DIR/lower_intrinsics.rs:+1:34: +1:35 +- _0 = transmute::<&T, *const T>(move _2) -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:36 +- // mir::Constant +- // + span: $DIR/lower_intrinsics.rs:53:14: 53:33 +- // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(&T) -> *const T {transmute::<&T, *const T>}, val: Value(<ZST>) } ++ _0 = move _2 as *const T (Transmute); // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:36 ++ goto -> bb1; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:36 + } + + bb1: { + StorageDead(_2); // scope 1 at $DIR/lower_intrinsics.rs:+1:35: +1:36 + return; // scope 0 at $DIR/lower_intrinsics.rs:+2:2: +2:2 + } + } + diff --git a/tests/mir-opt/lower_intrinsics.transmute_to_box_uninhabited.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.transmute_to_box_uninhabited.LowerIntrinsics.diff new file mode 100644 index 00000000000..43ddccc1ef7 --- /dev/null +++ b/tests/mir-opt/lower_intrinsics.transmute_to_box_uninhabited.LowerIntrinsics.diff @@ -0,0 +1,29 @@ +- // MIR for `transmute_to_box_uninhabited` before LowerIntrinsics ++ // MIR for `transmute_to_box_uninhabited` after LowerIntrinsics + + fn transmute_to_box_uninhabited() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:49: +0:50 + let mut _1: !; // in scope 0 at $DIR/lower_intrinsics.rs:+0:51: +3:2 + let _2: std::boxed::Box<Never>; // in scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:10 + let mut _3: !; // in scope 0 at $DIR/lower_intrinsics.rs:+2:5: +2:16 + scope 1 { + debug x => _2; // in scope 1 at $DIR/lower_intrinsics.rs:+1:9: +1:10 + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/lower_intrinsics.rs:+0:51: +3:2 + StorageLive(_2); // scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:10 +- _2 = transmute::<usize, Box<Never>>(const 1_usize) -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:25: +1:52 +- // mir::Constant +- // + span: $DIR/lower_intrinsics.rs:70:25: 70:44 +- // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(usize) -> Box<Never> {transmute::<usize, Box<Never>>}, val: Value(<ZST>) } ++ _2 = const 1_usize as std::boxed::Box<Never> (Transmute); // scope 0 at $DIR/lower_intrinsics.rs:+1:25: +1:52 ++ goto -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:25: +1:52 + } + + bb1: { + StorageLive(_3); // scope 1 at $DIR/lower_intrinsics.rs:+2:5: +2:16 + unreachable; // scope 1 at $DIR/lower_intrinsics.rs:+2:11: +2:13 + } + } + diff --git a/tests/mir-opt/lower_intrinsics.transmute_to_mut_uninhabited.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.transmute_to_mut_uninhabited.LowerIntrinsics.diff new file mode 100644 index 00000000000..bf529a9ca67 --- /dev/null +++ b/tests/mir-opt/lower_intrinsics.transmute_to_mut_uninhabited.LowerIntrinsics.diff @@ -0,0 +1,29 @@ +- // MIR for `transmute_to_mut_uninhabited` before LowerIntrinsics ++ // MIR for `transmute_to_mut_uninhabited` after LowerIntrinsics + + fn transmute_to_mut_uninhabited() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:49: +0:50 + let mut _1: !; // in scope 0 at $DIR/lower_intrinsics.rs:+0:51: +3:2 + let _2: &mut Never; // in scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:10 + let mut _3: !; // in scope 0 at $DIR/lower_intrinsics.rs:+2:5: +2:16 + scope 1 { + debug x => _2; // in scope 1 at $DIR/lower_intrinsics.rs:+1:9: +1:10 + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/lower_intrinsics.rs:+0:51: +3:2 + StorageLive(_2); // scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:10 +- _2 = transmute::<usize, &mut Never>(const 1_usize) -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:25: +1:52 +- // mir::Constant +- // + span: $DIR/lower_intrinsics.rs:64:25: 64:44 +- // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(usize) -> &mut Never {transmute::<usize, &mut Never>}, val: Value(<ZST>) } ++ _2 = const 1_usize as &mut Never (Transmute); // scope 0 at $DIR/lower_intrinsics.rs:+1:25: +1:52 ++ goto -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:25: +1:52 + } + + bb1: { + StorageLive(_3); // scope 1 at $DIR/lower_intrinsics.rs:+2:5: +2:16 + unreachable; // scope 1 at $DIR/lower_intrinsics.rs:+2:11: +2:13 + } + } + diff --git a/tests/mir-opt/lower_intrinsics.transmute_to_ref_uninhabited.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.transmute_to_ref_uninhabited.LowerIntrinsics.diff new file mode 100644 index 00000000000..4940a99021f --- /dev/null +++ b/tests/mir-opt/lower_intrinsics.transmute_to_ref_uninhabited.LowerIntrinsics.diff @@ -0,0 +1,29 @@ +- // MIR for `transmute_to_ref_uninhabited` before LowerIntrinsics ++ // MIR for `transmute_to_ref_uninhabited` after LowerIntrinsics + + fn transmute_to_ref_uninhabited() -> ! { + let mut _0: !; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:49: +0:50 + let mut _1: !; // in scope 0 at $DIR/lower_intrinsics.rs:+0:51: +3:2 + let _2: &Never; // in scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:10 + let mut _3: !; // in scope 0 at $DIR/lower_intrinsics.rs:+2:5: +2:16 + scope 1 { + debug x => _2; // in scope 1 at $DIR/lower_intrinsics.rs:+1:9: +1:10 + } + + bb0: { + StorageLive(_1); // scope 0 at $DIR/lower_intrinsics.rs:+0:51: +3:2 + StorageLive(_2); // scope 0 at $DIR/lower_intrinsics.rs:+1:9: +1:10 +- _2 = transmute::<usize, &Never>(const 1_usize) -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:21: +1:48 +- // mir::Constant +- // + span: $DIR/lower_intrinsics.rs:58:21: 58:40 +- // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(usize) -> &Never {transmute::<usize, &Never>}, val: Value(<ZST>) } ++ _2 = const 1_usize as &Never (Transmute); // scope 0 at $DIR/lower_intrinsics.rs:+1:21: +1:48 ++ goto -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:21: +1:48 + } + + bb1: { + StorageLive(_3); // scope 1 at $DIR/lower_intrinsics.rs:+2:5: +2:16 + unreachable; // scope 1 at $DIR/lower_intrinsics.rs:+2:11: +2:13 + } + } + diff --git a/tests/mir-opt/lower_intrinsics.transmute_uninhabited.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.transmute_uninhabited.LowerIntrinsics.diff new file mode 100644 index 00000000000..f3a12b9ba5f --- /dev/null +++ b/tests/mir-opt/lower_intrinsics.transmute_uninhabited.LowerIntrinsics.diff @@ -0,0 +1,22 @@ +- // MIR for `transmute_uninhabited` before LowerIntrinsics ++ // MIR for `transmute_uninhabited` after LowerIntrinsics + + fn transmute_uninhabited(_1: ()) -> Never { + debug u => _1; // in scope 0 at $DIR/lower_intrinsics.rs:+0:37: +0:38 + let mut _0: Never; // return place in scope 0 at $DIR/lower_intrinsics.rs:+0:47: +0:52 + let mut _2: (); // in scope 0 at $DIR/lower_intrinsics.rs:+1:47: +1:48 + scope 1 { + } + + bb0: { + StorageLive(_2); // scope 1 at $DIR/lower_intrinsics.rs:+1:47: +1:48 + _2 = _1; // scope 1 at $DIR/lower_intrinsics.rs:+1:47: +1:48 +- _0 = transmute::<(), Never>(move _2); // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:49 +- // mir::Constant +- // + span: $DIR/lower_intrinsics.rs:48:14: 48:46 +- // + literal: Const { ty: unsafe extern "rust-intrinsic" fn(()) -> Never {transmute::<(), Never>}, val: Value(<ZST>) } ++ _0 = move _2 as Never (Transmute); // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:49 ++ unreachable; // scope 1 at $DIR/lower_intrinsics.rs:+1:14: +1:49 + } + } + diff --git a/tests/mir-opt/lower_intrinsics.with_overflow.LowerIntrinsics.diff b/tests/mir-opt/lower_intrinsics.with_overflow.LowerIntrinsics.diff index 9870a70dec5..3b9a41249a4 100644 --- a/tests/mir-opt/lower_intrinsics.with_overflow.LowerIntrinsics.diff +++ b/tests/mir-opt/lower_intrinsics.with_overflow.LowerIntrinsics.diff @@ -32,7 +32,7 @@ _5 = _2; // scope 0 at $DIR/lower_intrinsics.rs:+1:53: +1:54 - _3 = add_with_overflow::<i32>(move _4, move _5) -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:14: +1:55 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:78:14: 78:49 +- // + span: $DIR/lower_intrinsics.rs:111:14: 111:49 - // + literal: Const { ty: extern "rust-intrinsic" fn(i32, i32) -> (i32, bool) {add_with_overflow::<i32>}, val: Value(<ZST>) } + _3 = CheckedAdd(move _4, move _5); // scope 0 at $DIR/lower_intrinsics.rs:+1:14: +1:55 + goto -> bb1; // scope 0 at $DIR/lower_intrinsics.rs:+1:14: +1:55 @@ -48,7 +48,7 @@ _8 = _2; // scope 1 at $DIR/lower_intrinsics.rs:+2:53: +2:54 - _6 = sub_with_overflow::<i32>(move _7, move _8) -> bb2; // scope 1 at $DIR/lower_intrinsics.rs:+2:14: +2:55 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:79:14: 79:49 +- // + span: $DIR/lower_intrinsics.rs:112:14: 112:49 - // + literal: Const { ty: extern "rust-intrinsic" fn(i32, i32) -> (i32, bool) {sub_with_overflow::<i32>}, val: Value(<ZST>) } + _6 = CheckedSub(move _7, move _8); // scope 1 at $DIR/lower_intrinsics.rs:+2:14: +2:55 + goto -> bb2; // scope 1 at $DIR/lower_intrinsics.rs:+2:14: +2:55 @@ -64,7 +64,7 @@ _11 = _2; // scope 2 at $DIR/lower_intrinsics.rs:+3:53: +3:54 - _9 = mul_with_overflow::<i32>(move _10, move _11) -> bb3; // scope 2 at $DIR/lower_intrinsics.rs:+3:14: +3:55 - // mir::Constant -- // + span: $DIR/lower_intrinsics.rs:80:14: 80:49 +- // + span: $DIR/lower_intrinsics.rs:113:14: 113:49 - // + literal: Const { ty: extern "rust-intrinsic" fn(i32, i32) -> (i32, bool) {mul_with_overflow::<i32>}, val: Value(<ZST>) } + _9 = CheckedMul(move _10, move _11); // scope 2 at $DIR/lower_intrinsics.rs:+3:14: +3:55 + goto -> bb3; // scope 2 at $DIR/lower_intrinsics.rs:+3:14: +3:55 diff --git a/tests/run-make/issue-36710/Makefile b/tests/run-make/issue-36710/Makefile index d6145c07126..c6b71f5fbd4 100644 --- a/tests/run-make/issue-36710/Makefile +++ b/tests/run-make/issue-36710/Makefile @@ -4,6 +4,7 @@ # ignore-nvptx64-nvidia-cuda FIXME: can't find crate for `std` # ignore-musl FIXME: this makefile needs teaching how to use a musl toolchain # (see dist-i586-gnu-i586-i686-musl Dockerfile) +# ignore-sgx include ../../run-make-fulldeps/tools.mk diff --git a/tests/run-make/raw-dylib-cross-compilation/Makefile b/tests/run-make/raw-dylib-cross-compilation/Makefile new file mode 100644 index 00000000000..2a714f3a11f --- /dev/null +++ b/tests/run-make/raw-dylib-cross-compilation/Makefile @@ -0,0 +1,22 @@ +# Tests that raw-dylib cross compilation works correctly + +# only-gnu +# needs-i686-dlltool +# needs-x86_64-dlltool + +# i686 dlltool.exe can't product x64 binaries. +# ignore-i686-pc-windows-gnu + +include ../../run-make-fulldeps/tools.mk + +all: + # Build as x86 and make sure that we have x86 objects only. + $(RUSTC) --crate-type lib --crate-name i686_raw_dylib_test --target i686-pc-windows-gnu lib.rs + "$(LLVM_BIN_DIR)"/llvm-objdump -a $(TMPDIR)/libi686_raw_dylib_test.rlib > $(TMPDIR)/i686.objdump.txt + $(CGREP) "file format coff-i386" < $(TMPDIR)/i686.objdump.txt + $(CGREP) -v "file format coff-x86-64" < $(TMPDIR)/i686.objdump.txt + # Build as x64 and make sure that we have x64 objects only. + $(RUSTC) --crate-type lib --crate-name x64_raw_dylib_test --target x86_64-pc-windows-gnu lib.rs + "$(LLVM_BIN_DIR)"/llvm-objdump -a $(TMPDIR)/libx64_raw_dylib_test.rlib > $(TMPDIR)/x64.objdump.txt + $(CGREP) "file format coff-x86-64" < $(TMPDIR)/x64.objdump.txt + $(CGREP) -v "file format coff-i386" < $(TMPDIR)/x64.objdump.txt diff --git a/tests/run-make/raw-dylib-cross-compilation/lib.rs b/tests/run-make/raw-dylib-cross-compilation/lib.rs new file mode 100644 index 00000000000..51bf2ec6b6e --- /dev/null +++ b/tests/run-make/raw-dylib-cross-compilation/lib.rs @@ -0,0 +1,20 @@ +#![feature(raw_dylib)] +#![feature(no_core, lang_items)] +#![no_std] +#![no_core] +#![crate_type = "lib"] + +// This is needed because of #![no_core]: +#[lang = "sized"] +trait Sized {} + +#[link(name = "extern_1", kind = "raw-dylib")] +extern { + fn extern_fn(); +} + +pub fn extern_fn_caller() { + unsafe { + extern_fn(); + } +} diff --git a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/cc_plus_one_asm.checks b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/cc_plus_one_asm.checks index e839c200bbb..af9bc8c1d62 100644 --- a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/cc_plus_one_asm.checks +++ b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/cc_plus_one_asm.checks @@ -1,8 +1,7 @@ CHECK: cc_plus_one_asm CHECK-NEXT: movl CHECK-NEXT: lfence -CHECK-NEXT: inc -CHECK-NEXT: notq (%rsp) -CHECK-NEXT: notq (%rsp) +CHECK-NEXT: incl +CHECK-NEXT: shlq $0, (%rsp) CHECK-NEXT: lfence CHECK-NEXT: retq diff --git a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/jumpto.checks b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/jumpto.checks index 15211e3ade7..885bf461bf3 100644 --- a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/jumpto.checks +++ b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/jumpto.checks @@ -1,8 +1,24 @@ -CHECK: libunwind::Registers_x86_64::jumpto +CHECK: __libunwind_Registers_x86_64_jumpto CHECK: lfence CHECK: lfence CHECK: lfence CHECK: lfence -CHECK: shlq $0, (%rsp) +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK: lfence +CHECK-NEXT: popq [[REGISTER:%[a-z]+]] +CHECK-NEXT: lfence +CHECK-NEXT: popq [[REGISTER:%[a-z]+]] CHECK-NEXT: lfence -CHECK-NEXT: retq +CHECK-NEXT: jmpq *[[REGISTER]] diff --git a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/print.checks b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/print.checks index 0fe88141b24..8a5493650a7 100644 --- a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/print.checks +++ b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/print.checks @@ -2,6 +2,5 @@ CHECK: print CHECK: lfence CHECK: lfence CHECK: lfence -CHECK: popq CHECK: callq 0x{{[[:xdigit:]]*}} <_Unwind_Resume> CHECK-NEXT: ud2 diff --git a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/script.sh b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/script.sh index 944343df6e5..235bb603b84 100644 --- a/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/script.sh +++ b/tests/run-make/x86_64-fortanix-unknown-sgx-lvi/script.sh @@ -20,39 +20,38 @@ function build { } function check { - local func=$1 + local func_re="$1" local checks="${TEST_DIR}/$2" local asm=$(mktemp) - local objdump="${BUILD_DIR}/x86_64-unknown-linux-gnu/llvm/build/bin/llvm-objdump" - local filecheck="${BUILD_DIR}/x86_64-unknown-linux-gnu/llvm/build/bin/FileCheck" - - ${objdump} --disassemble-symbols=${func} --demangle \ - ${WORK_DIR}/enclave/target/x86_64-fortanix-unknown-sgx/debug/enclave > ${asm} + local objdump="${LLVM_BIN_DIR}/llvm-objdump" + local filecheck="${LLVM_BIN_DIR}/FileCheck" + local enclave=${WORK_DIR}/enclave/target/x86_64-fortanix-unknown-sgx/debug/enclave + + func="$(${objdump} --syms --demangle ${enclave} | \ + grep --only-matching -E "[[:blank:]]+${func_re}\$" | \ + sed -e 's/^[[:space:]]*//' )" + ${objdump} --disassemble-symbols="${func}" --demangle \ + ${enclave} > ${asm} ${filecheck} --input-file ${asm} ${checks} } build -check unw_getcontext unw_getcontext.checks -check "libunwind::Registers_x86_64::jumpto()" jumpto.checks -check "std::io::stdio::_print::h87f0c238421c45bc" print.checks -check rust_plus_one_global_asm rust_plus_one_global_asm.checks \ - || echo "warning: module level assembly currently not hardened" +check "unw_getcontext" unw_getcontext.checks +check "__libunwind_Registers_x86_64_jumpto" jumpto.checks +check 'std::io::stdio::_print::[[:alnum:]]+' print.checks +check rust_plus_one_global_asm rust_plus_one_global_asm.checks check cc_plus_one_c cc_plus_one_c.checks check cc_plus_one_c_asm cc_plus_one_c_asm.checks check cc_plus_one_cxx cc_plus_one_cxx.checks check cc_plus_one_cxx_asm cc_plus_one_cxx_asm.checks -check cc_plus_one_asm cc_plus_one_asm.checks \ - || echo "warning: the cc crate forwards assembly files to the CC compiler." \ - "Clang uses its own integrated assembler, which does not include the LVI passes." +check cc_plus_one_asm cc_plus_one_asm.checks check cmake_plus_one_c cmake_plus_one_c.checks check cmake_plus_one_c_asm cmake_plus_one_c_asm.checks -check cmake_plus_one_c_global_asm cmake_plus_one_c_global_asm.checks \ - || echo "warning: module level assembly currently not hardened" +check cmake_plus_one_c_global_asm cmake_plus_one_c_global_asm.checks check cmake_plus_one_cxx cmake_plus_one_cxx.checks check cmake_plus_one_cxx_asm cmake_plus_one_cxx_asm.checks -check cmake_plus_one_cxx_global_asm cmake_plus_one_cxx_global_asm.checks \ - || echo "warning: module level assembly currently not hardened" +check cmake_plus_one_cxx_global_asm cmake_plus_one_cxx_global_asm.checks check cmake_plus_one_asm cmake_plus_one_asm.checks diff --git a/tests/rustdoc-js-std/parser-errors.js b/tests/rustdoc-js-std/parser-errors.js index 98c6f27ca61..d1aa840ab08 100644 --- a/tests/rustdoc-js-std/parser-errors.js +++ b/tests/rustdoc-js-std/parser-errors.js @@ -17,6 +17,7 @@ const QUERY = [ "a b:", "a (b:", "_:", + "_:a", "a-bb", "a>bb", "ab'", @@ -48,7 +49,6 @@ const PARSED = [ foundElems: 0, original: "<P>", returned: [], - typeFilter: -1, userQuery: "<p>", error: "Found generics without a path", }, @@ -57,7 +57,6 @@ const PARSED = [ foundElems: 0, original: "-> <P>", returned: [], - typeFilter: -1, userQuery: "-> <p>", error: "Found generics without a path", }, @@ -66,7 +65,6 @@ const PARSED = [ foundElems: 0, original: "a<\"P\">", returned: [], - typeFilter: -1, userQuery: "a<\"p\">", error: "Unexpected `\"` in generics", }, @@ -75,7 +73,6 @@ const PARSED = [ foundElems: 0, original: "\"P\" \"P\"", returned: [], - typeFilter: -1, userQuery: "\"p\" \"p\"", error: "Cannot have more than one literal search element", }, @@ -84,7 +81,6 @@ const PARSED = [ foundElems: 0, original: "P \"P\"", returned: [], - typeFilter: -1, userQuery: "p \"p\"", error: "Cannot use literal search when there is more than one element", }, @@ -93,7 +89,6 @@ const PARSED = [ foundElems: 0, original: "\"p\" p", returned: [], - typeFilter: -1, userQuery: "\"p\" p", error: "You cannot have more than one element if you use quotes", }, @@ -102,7 +97,6 @@ const PARSED = [ foundElems: 0, original: "\"const\": p", returned: [], - typeFilter: -1, userQuery: "\"const\": p", error: "You cannot use quotes on type filter", }, @@ -111,16 +105,14 @@ const PARSED = [ foundElems: 0, original: "a<:a>", returned: [], - typeFilter: -1, userQuery: "a<:a>", - error: "Unexpected `:` after `<`", + error: "Expected type filter before `:`", }, { elems: [], foundElems: 0, original: "a<::a>", returned: [], - typeFilter: -1, userQuery: "a<::a>", error: "Unexpected `::`: paths cannot start with `::`", }, @@ -129,7 +121,6 @@ const PARSED = [ foundElems: 0, original: "((a))", returned: [], - typeFilter: -1, userQuery: "((a))", error: "Unexpected `(`", }, @@ -138,7 +129,6 @@ const PARSED = [ foundElems: 0, original: "(p -> p", returned: [], - typeFilter: -1, userQuery: "(p -> p", error: "Unexpected `(`", }, @@ -147,7 +137,6 @@ const PARSED = [ foundElems: 0, original: "::a::b", returned: [], - typeFilter: -1, userQuery: "::a::b", error: "Paths cannot start with `::`", }, @@ -156,7 +145,6 @@ const PARSED = [ foundElems: 0, original: "a::::b", returned: [], - typeFilter: -1, userQuery: "a::::b", error: "Unexpected `::::`", }, @@ -165,7 +153,6 @@ const PARSED = [ foundElems: 0, original: "a::b::", returned: [], - typeFilter: -1, userQuery: "a::b::", error: "Paths cannot end with `::`", }, @@ -174,7 +161,6 @@ const PARSED = [ foundElems: 0, original: ":a", returned: [], - typeFilter: -1, userQuery: ":a", error: "Expected type filter before `:`", }, @@ -183,16 +169,14 @@ const PARSED = [ foundElems: 0, original: "a b:", returned: [], - typeFilter: -1, userQuery: "a b:", - error: "Unexpected `:`", + error: "Unexpected `:` (expected path after type filter)", }, { elems: [], foundElems: 0, original: "a (b:", returned: [], - typeFilter: -1, userQuery: "a (b:", error: "Unexpected `(`", }, @@ -201,8 +185,15 @@ const PARSED = [ foundElems: 0, original: "_:", returned: [], - typeFilter: -1, userQuery: "_:", + error: "Unexpected `:` (expected path after type filter)", + }, + { + elems: [], + foundElems: 0, + original: "_:a", + returned: [], + userQuery: "_:a", error: "Unknown type filter `_`", }, { @@ -210,7 +201,6 @@ const PARSED = [ foundElems: 0, original: "a-bb", returned: [], - typeFilter: -1, userQuery: "a-bb", error: "Unexpected `-` (did you mean `->`?)", }, @@ -219,7 +209,6 @@ const PARSED = [ foundElems: 0, original: "a>bb", returned: [], - typeFilter: -1, userQuery: "a>bb", error: "Unexpected `>` (did you mean `->`?)", }, @@ -228,7 +217,6 @@ const PARSED = [ foundElems: 0, original: "ab'", returned: [], - typeFilter: -1, userQuery: "ab'", error: "Unexpected `'`", }, @@ -237,7 +225,6 @@ const PARSED = [ foundElems: 0, original: "a->", returned: [], - typeFilter: -1, userQuery: "a->", error: "Expected at least one item after `->`", }, @@ -246,7 +233,6 @@ const PARSED = [ foundElems: 0, original: '"p" <a>', returned: [], - typeFilter: -1, userQuery: '"p" <a>', error: "Found generics without a path", }, @@ -255,7 +241,6 @@ const PARSED = [ foundElems: 0, original: '"p" a<a>', returned: [], - typeFilter: -1, userQuery: '"p" a<a>', error: "You cannot have more than one element if you use quotes", }, @@ -264,7 +249,6 @@ const PARSED = [ foundElems: 0, original: 'a,<', returned: [], - typeFilter: -1, userQuery: 'a,<', error: 'Found generics without a path', }, @@ -273,7 +257,6 @@ const PARSED = [ foundElems: 0, original: 'aaaaa<>b', returned: [], - typeFilter: -1, userQuery: 'aaaaa<>b', error: 'Expected `,`, ` `, `:` or `->`, found `b`', }, @@ -282,16 +265,14 @@ const PARSED = [ foundElems: 0, original: 'fn:aaaaa<>b', returned: [], - typeFilter: -1, userQuery: 'fn:aaaaa<>b', - error: 'Expected `,`, ` ` or `->`, found `b`', + error: 'Expected `,`, ` `, `:` or `->`, found `b`', }, { elems: [], foundElems: 0, original: '->a<>b', returned: [], - typeFilter: -1, userQuery: '->a<>b', error: 'Expected `,` or ` `, found `b`', }, @@ -300,7 +281,6 @@ const PARSED = [ foundElems: 0, original: 'a<->', returned: [], - typeFilter: -1, userQuery: 'a<->', error: 'Unexpected `-` after `<`', }, @@ -309,7 +289,6 @@ const PARSED = [ foundElems: 0, original: 'a:: a', returned: [], - typeFilter: -1, userQuery: 'a:: a', error: 'Paths cannot end with `::`', }, @@ -318,7 +297,6 @@ const PARSED = [ foundElems: 0, original: 'a ::a', returned: [], - typeFilter: -1, userQuery: 'a ::a', error: 'Paths cannot start with `::`', }, @@ -327,16 +305,14 @@ const PARSED = [ foundElems: 0, original: "a<a>:", returned: [], - typeFilter: -1, userQuery: "a<a>:", - error: 'Unexpected `:`', + error: 'Unexpected `<` in type filter', }, { elems: [], foundElems: 0, original: "a<>:", returned: [], - typeFilter: -1, userQuery: "a<>:", error: 'Unexpected `<` in type filter', }, @@ -345,7 +321,6 @@ const PARSED = [ foundElems: 0, original: "a,:", returned: [], - typeFilter: -1, userQuery: "a,:", error: 'Unexpected `,` in type filter', }, @@ -354,7 +329,6 @@ const PARSED = [ foundElems: 0, original: "a<> :", returned: [], - typeFilter: -1, userQuery: "a<> :", error: 'Unexpected `<` in type filter', }, @@ -363,7 +337,6 @@ const PARSED = [ foundElems: 0, original: "mod : :", returned: [], - typeFilter: -1, userQuery: "mod : :", error: 'Unexpected `:`', }, @@ -372,7 +345,6 @@ const PARSED = [ foundElems: 0, original: "a!a", returned: [], - typeFilter: -1, userQuery: "a!a", error: 'Unexpected `!`: it can only be at the end of an ident', }, @@ -381,7 +353,6 @@ const PARSED = [ foundElems: 0, original: "a!!", returned: [], - typeFilter: -1, userQuery: "a!!", error: 'Cannot have more than one `!` in an ident', }, @@ -390,7 +361,6 @@ const PARSED = [ foundElems: 0, original: "mod:a!", returned: [], - typeFilter: -1, userQuery: "mod:a!", error: 'Invalid search type: macro `!` and `mod` both specified', }, @@ -399,7 +369,6 @@ const PARSED = [ foundElems: 0, original: "a!::a", returned: [], - typeFilter: -1, userQuery: "a!::a", error: 'Cannot have associated items in macros', }, @@ -408,7 +377,6 @@ const PARSED = [ foundElems: 0, original: "a<", returned: [], - typeFilter: -1, userQuery: "a<", error: "Unclosed `<`", }, diff --git a/tests/rustdoc-js-std/parser-filter.js b/tests/rustdoc-js-std/parser-filter.js index 01f65b478f8..e23447ab75d 100644 --- a/tests/rustdoc-js-std/parser-filter.js +++ b/tests/rustdoc-js-std/parser-filter.js @@ -1,4 +1,14 @@ -const QUERY = ['fn:foo', 'enum : foo', 'macro<f>:foo', 'macro!', 'macro:mac!', 'a::mac!']; +const QUERY = [ + 'fn:foo', + 'enum : foo', + 'macro<f>:foo', + 'macro!', + 'macro:mac!', + 'a::mac!', + '-> fn:foo', + '-> fn:foo<fn:bar>', + '-> fn:foo<fn:bar, enum : baz::fuzz>', +]; const PARSED = [ { @@ -8,11 +18,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "foo", generics: [], + typeFilter: 5, }], foundElems: 1, original: "fn:foo", returned: [], - typeFilter: 5, userQuery: "fn:foo", error: null, }, @@ -23,11 +33,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "foo", generics: [], + typeFilter: 4, }], foundElems: 1, original: "enum : foo", returned: [], - typeFilter: 4, userQuery: "enum : foo", error: null, }, @@ -36,9 +46,8 @@ const PARSED = [ foundElems: 0, original: "macro<f>:foo", returned: [], - typeFilter: -1, userQuery: "macro<f>:foo", - error: "Unexpected `:`", + error: "Unexpected `<` in type filter", }, { elems: [{ @@ -47,11 +56,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "macro", generics: [], + typeFilter: 14, }], foundElems: 1, original: "macro!", returned: [], - typeFilter: 14, userQuery: "macro!", error: null, }, @@ -62,11 +71,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "mac", generics: [], + typeFilter: 14, }], foundElems: 1, original: "macro:mac!", returned: [], - typeFilter: 14, userQuery: "macro:mac!", error: null, }, @@ -77,12 +86,83 @@ const PARSED = [ pathWithoutLast: ["a"], pathLast: "mac", generics: [], + typeFilter: 14, }], foundElems: 1, original: "a::mac!", returned: [], - typeFilter: 14, userQuery: "a::mac!", error: null, }, + { + elems: [], + foundElems: 1, + original: "-> fn:foo", + returned: [{ + name: "foo", + fullPath: ["foo"], + pathWithoutLast: [], + pathLast: "foo", + generics: [], + typeFilter: 5, + }], + userQuery: "-> fn:foo", + error: null, + }, + { + elems: [], + foundElems: 1, + original: "-> fn:foo<fn:bar>", + returned: [{ + name: "foo", + fullPath: ["foo"], + pathWithoutLast: [], + pathLast: "foo", + generics: [ + { + name: "bar", + fullPath: ["bar"], + pathWithoutLast: [], + pathLast: "bar", + generics: [], + typeFilter: 5, + } + ], + typeFilter: 5, + }], + userQuery: "-> fn:foo<fn:bar>", + error: null, + }, + { + elems: [], + foundElems: 1, + original: "-> fn:foo<fn:bar, enum : baz::fuzz>", + returned: [{ + name: "foo", + fullPath: ["foo"], + pathWithoutLast: [], + pathLast: "foo", + generics: [ + { + name: "bar", + fullPath: ["bar"], + pathWithoutLast: [], + pathLast: "bar", + generics: [], + typeFilter: 5, + }, + { + name: "baz::fuzz", + fullPath: ["baz", "fuzz"], + pathWithoutLast: ["baz"], + pathLast: "fuzz", + generics: [], + typeFilter: 4, + }, + ], + typeFilter: 5, + }], + userQuery: "-> fn:foo<fn:bar, enum : baz::fuzz>", + error: null, + }, ]; diff --git a/tests/rustdoc-js-std/parser-generics.js b/tests/rustdoc-js-std/parser-generics.js index 0cf7f5019aa..c448d845acb 100644 --- a/tests/rustdoc-js-std/parser-generics.js +++ b/tests/rustdoc-js-std/parser-generics.js @@ -6,7 +6,6 @@ const PARSED = [ foundElems: 0, original: 'A<B<C<D>, E>', returned: [], - typeFilter: -1, userQuery: 'a<b<c<d>, e>', error: 'Unexpected `<` after `<`', }, @@ -18,6 +17,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: "p", generics: [], + typeFilter: -1, }, { name: "u8", @@ -25,12 +25,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: "u8", generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "p<> u8", returned: [], - typeFilter: -1, userQuery: "p<> u8", error: null, }, @@ -50,12 +50,12 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }, ], foundElems: 1, original: '"p"<a>', returned: [], - typeFilter: -1, userQuery: '"p"<a>', error: null, }, diff --git a/tests/rustdoc-js-std/parser-ident.js b/tests/rustdoc-js-std/parser-ident.js index 6c17d00f16e..be42b7aa463 100644 --- a/tests/rustdoc-js-std/parser-ident.js +++ b/tests/rustdoc-js-std/parser-ident.js @@ -23,11 +23,11 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }], foundElems: 1, original: "R<!>", returned: [], - typeFilter: -1, userQuery: "r<!>", error: null, }, @@ -38,11 +38,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "!", generics: [], + typeFilter: -1, }], foundElems: 1, original: "!", returned: [], - typeFilter: -1, userQuery: "!", error: null, }, @@ -53,11 +53,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "a", generics: [], + typeFilter: 14, }], foundElems: 1, original: "a!", returned: [], - typeFilter: 14, userQuery: "a!", error: null, }, @@ -66,7 +66,6 @@ const PARSED = [ foundElems: 0, original: "a!::b", returned: [], - typeFilter: -1, userQuery: "a!::b", error: "Cannot have associated items in macros", }, @@ -77,11 +76,11 @@ const PARSED = [ pathWithoutLast: ["!"], pathLast: "b", generics: [], + typeFilter: -1, }], foundElems: 1, original: "!::b", returned: [], - typeFilter: -1, userQuery: "!::b", error: null, }, @@ -90,7 +89,6 @@ const PARSED = [ foundElems: 0, original: "a!::b!", returned: [], - typeFilter: -1, userQuery: "a!::b!", error: "Cannot have associated items in macros", }, diff --git a/tests/rustdoc-js-std/parser-literal.js b/tests/rustdoc-js-std/parser-literal.js index 87b3baff1e2..3a31d1bddff 100644 --- a/tests/rustdoc-js-std/parser-literal.js +++ b/tests/rustdoc-js-std/parser-literal.js @@ -16,11 +16,11 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }], foundElems: 1, original: "R<P>", returned: [], - typeFilter: -1, userQuery: "r<p>", error: null, } diff --git a/tests/rustdoc-js-std/parser-paths.js b/tests/rustdoc-js-std/parser-paths.js index 9f823f9336a..f3e421f5ffa 100644 --- a/tests/rustdoc-js-std/parser-paths.js +++ b/tests/rustdoc-js-std/parser-paths.js @@ -8,11 +8,11 @@ const PARSED = [ pathWithoutLast: ["a"], pathLast: "b", generics: [], + typeFilter: -1, }], foundElems: 1, original: "A::B", returned: [], - typeFilter: -1, userQuery: "a::b", error: null, }, @@ -24,6 +24,7 @@ const PARSED = [ pathWithoutLast: ["a"], pathLast: "b", generics: [], + typeFilter: -1, }, { name: "c", @@ -31,12 +32,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: "c", generics: [], + typeFilter: -1, }, ], foundElems: 2, original: 'A::B,C', returned: [], - typeFilter: -1, userQuery: 'a::b,c', error: null, }, @@ -56,6 +57,7 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }, { name: "c", @@ -63,12 +65,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: "c", generics: [], + typeFilter: -1, }, ], foundElems: 2, original: 'A::B<f>,C', returned: [], - typeFilter: -1, userQuery: 'a::b<f>,c', error: null, }, @@ -79,11 +81,11 @@ const PARSED = [ pathWithoutLast: ["mod"], pathLast: "a", generics: [], + typeFilter: -1, }], foundElems: 1, original: "mod::a", returned: [], - typeFilter: -1, userQuery: "mod::a", error: null, }, diff --git a/tests/rustdoc-js-std/parser-quote.js b/tests/rustdoc-js-std/parser-quote.js index 1e16c90de5e..d5d67cac892 100644 --- a/tests/rustdoc-js-std/parser-quote.js +++ b/tests/rustdoc-js-std/parser-quote.js @@ -19,8 +19,8 @@ const PARSED = [ pathWithoutLast: [], pathLast: "p", generics: [], + typeFilter: -1, }], - typeFilter: -1, userQuery: '-> "p"', error: null, }, @@ -31,11 +31,11 @@ const PARSED = [ pathWithoutLast: [], pathLast: "p", generics: [], + typeFilter: -1, }], foundElems: 1, original: '"p",', returned: [], - typeFilter: -1, userQuery: '"p",', error: null, }, @@ -44,7 +44,6 @@ const PARSED = [ foundElems: 0, original: '"p" -> a', returned: [], - typeFilter: -1, userQuery: '"p" -> a', error: "You cannot have more than one element if you use quotes", }, @@ -53,7 +52,6 @@ const PARSED = [ foundElems: 0, original: '"a" -> "p"', returned: [], - typeFilter: -1, userQuery: '"a" -> "p"', error: "Cannot have more than one literal search element", }, @@ -62,7 +60,6 @@ const PARSED = [ foundElems: 0, original: '->"-"', returned: [], - typeFilter: -1, userQuery: '->"-"', error: 'Unexpected `-` in a string element', }, @@ -71,7 +68,6 @@ const PARSED = [ foundElems: 0, original: '"a', returned: [], - typeFilter: -1, userQuery: '"a', error: 'Unclosed `"`', }, @@ -80,7 +76,6 @@ const PARSED = [ foundElems: 0, original: '""', returned: [], - typeFilter: -1, userQuery: '""', error: 'Cannot have empty string element', }, diff --git a/tests/rustdoc-js-std/parser-returned.js b/tests/rustdoc-js-std/parser-returned.js index 6fce17dcabd..c2981319055 100644 --- a/tests/rustdoc-js-std/parser-returned.js +++ b/tests/rustdoc-js-std/parser-returned.js @@ -25,8 +25,8 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }], - typeFilter: -1, userQuery: "-> f<p>", error: null, }, @@ -40,8 +40,8 @@ const PARSED = [ pathWithoutLast: [], pathLast: "p", generics: [], + typeFilter: -1, }], - typeFilter: -1, userQuery: "-> p", error: null, }, @@ -55,8 +55,8 @@ const PARSED = [ pathWithoutLast: [], pathLast: "a", generics: [], + typeFilter: -1, }], - typeFilter: -1, userQuery: "->,a", error: null, }, @@ -67,6 +67,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: "aaaaa", generics: [], + typeFilter: -1, }], foundElems: 2, original: "aaaaa->a", @@ -76,8 +77,8 @@ const PARSED = [ pathWithoutLast: [], pathLast: "a", generics: [], + typeFilter: -1, }], - typeFilter: -1, userQuery: "aaaaa->a", error: null, }, @@ -91,8 +92,8 @@ const PARSED = [ pathWithoutLast: [], pathLast: "!", generics: [], + typeFilter: -1, }], - typeFilter: -1, userQuery: "-> !", error: null, }, diff --git a/tests/rustdoc-js-std/parser-separators.js b/tests/rustdoc-js-std/parser-separators.js index 5b7abdfa8d6..fc8c5114c4e 100644 --- a/tests/rustdoc-js-std/parser-separators.js +++ b/tests/rustdoc-js-std/parser-separators.js @@ -19,6 +19,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'aaaaaa', generics: [], + typeFilter: -1, }, { name: 'b', @@ -26,12 +27,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'b', generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "aaaaaa b", returned: [], - typeFilter: -1, userQuery: "aaaaaa b", error: null, }, @@ -43,6 +44,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'a', generics: [], + typeFilter: -1, }, { name: 'b', @@ -50,12 +52,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'b', generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "a b", returned: [], - typeFilter: -1, userQuery: "a b", error: null, }, @@ -67,6 +69,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'a', generics: [], + typeFilter: -1, }, { name: 'b', @@ -74,12 +77,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'b', generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "a,b", returned: [], - typeFilter: -1, userQuery: "a,b", error: null, }, @@ -91,6 +94,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'a', generics: [], + typeFilter: -1, }, { name: 'b', @@ -98,12 +102,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: 'b', generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "a\tb", returned: [], - typeFilter: -1, userQuery: "a\tb", error: null, }, @@ -130,12 +134,12 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }, ], foundElems: 1, original: "a<b c>", returned: [], - typeFilter: -1, userQuery: "a<b c>", error: null, }, @@ -162,12 +166,12 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }, ], foundElems: 1, original: "a<b,c>", returned: [], - typeFilter: -1, userQuery: "a<b,c>", error: null, }, @@ -194,12 +198,12 @@ const PARSED = [ generics: [], }, ], + typeFilter: -1, }, ], foundElems: 1, original: "a<b\tc>", returned: [], - typeFilter: -1, userQuery: "a<b\tc>", error: null, }, diff --git a/tests/rustdoc-js-std/parser-weird-queries.js b/tests/rustdoc-js-std/parser-weird-queries.js index a3d85aeca5e..dc1049a70bc 100644 --- a/tests/rustdoc-js-std/parser-weird-queries.js +++ b/tests/rustdoc-js-std/parser-weird-queries.js @@ -20,6 +20,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: "a", generics: [], + typeFilter: -1, }, { name: "b", @@ -27,12 +28,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: "b", generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "a b", returned: [], - typeFilter: -1, userQuery: "a b", error: null, }, @@ -44,6 +45,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: "a", generics: [], + typeFilter: -1, }, { name: "b", @@ -51,12 +53,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: "b", generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "a b", returned: [], - typeFilter: -1, userQuery: "a b", error: null, }, @@ -65,7 +67,6 @@ const PARSED = [ foundElems: 0, original: "a,b(c)", returned: [], - typeFilter: -1, userQuery: "a,b(c)", error: "Unexpected `(`", }, @@ -77,6 +78,7 @@ const PARSED = [ pathWithoutLast: [], pathLast: "aaa", generics: [], + typeFilter: -1, }, { name: "a", @@ -84,12 +86,12 @@ const PARSED = [ pathWithoutLast: [], pathLast: "a", generics: [], + typeFilter: -1, }, ], foundElems: 2, original: "aaa,a", returned: [], - typeFilter: -1, userQuery: "aaa,a", error: null, }, @@ -98,7 +100,6 @@ const PARSED = [ foundElems: 0, original: ",,,,", returned: [], - typeFilter: -1, userQuery: ",,,,", error: null, }, @@ -107,17 +108,15 @@ const PARSED = [ foundElems: 0, original: 'mod :', returned: [], - typeFilter: 0, userQuery: 'mod :', - error: null, + error: "Unexpected `:` (expected path after type filter)", }, { elems: [], foundElems: 0, original: 'mod\t:', returned: [], - typeFilter: 0, userQuery: 'mod\t:', - error: null, + error: "Unexpected `:` (expected path after type filter)", }, ]; diff --git a/tests/rustdoc-js/generics-impl.js b/tests/rustdoc-js/generics-impl.js index bb6e0041db5..5051743bda2 100644 --- a/tests/rustdoc-js/generics-impl.js +++ b/tests/rustdoc-js/generics-impl.js @@ -5,6 +5,8 @@ const QUERY = [ 'Aaaaaaa -> bool', 'Aaaaaaa -> usize', 'Read -> u64', + 'trait:Read -> u64', + 'struct:Read -> u64', 'bool -> u64', 'Ddddddd -> u64', '-> Ddddddd' @@ -37,6 +39,17 @@ const EXPECTED = [ ], }, { + // trait:Read -> u64 + 'others': [ + { 'path': 'generics_impl::Ddddddd', 'name': 'eeeeeee' }, + { 'path': 'generics_impl::Ddddddd', 'name': 'ggggggg' }, + ], + }, + { + // struct:Read -> u64 + 'others': [], + }, + { // bool -> u64 'others': [ { 'path': 'generics_impl::Ddddddd', 'name': 'fffffff' }, diff --git a/tests/rustdoc-js/generics.js b/tests/rustdoc-js/generics.js index 5e5ba7cd9ac..f79c709ad6c 100644 --- a/tests/rustdoc-js/generics.js +++ b/tests/rustdoc-js/generics.js @@ -2,6 +2,8 @@ const QUERY = [ 'R<P>', + 'R<struct:P>', + 'R<enum:P>', '"P"', 'P', 'ExtraCreditStructMulti<ExtraCreditInnerMulti, ExtraCreditInnerMulti>', @@ -21,6 +23,20 @@ const EXPECTED = [ ], }, { + // R<struct:P> + 'returned': [ + { 'path': 'generics', 'name': 'alef' }, + ], + 'in_args': [ + { 'path': 'generics', 'name': 'alpha' }, + ], + }, + { + // R<enum:P> + 'returned': [], + 'in_args': [], + }, + { // "P" 'others': [ { 'path': 'generics', 'name': 'P' }, diff --git a/tests/rustdoc-js/primitive.js b/tests/rustdoc-js/primitive.js index 918f7099918..4aec98c3403 100644 --- a/tests/rustdoc-js/primitive.js +++ b/tests/rustdoc-js/primitive.js @@ -3,6 +3,8 @@ const QUERY = [ "i32", "str", + "primitive:str", + "struct:str", "TotoIsSomewhere", ]; @@ -18,6 +20,14 @@ const EXPECTED = [ ], }, { + 'returned': [ + { 'path': 'primitive', 'name': 'foo' }, + ], + }, + { + 'returned': [], + }, + { 'others': [], 'in_args': [], 'returned': [], diff --git a/tests/rustdoc-ui/z-help.stdout b/tests/rustdoc-ui/z-help.stdout index 5ad38e4fd98..72f5f933d8d 100644 --- a/tests/rustdoc-ui/z-help.stdout +++ b/tests/rustdoc-ui/z-help.stdout @@ -183,6 +183,7 @@ -Z threads=val -- use a thread pool with N threads -Z time-llvm-passes=val -- measure time of each LLVM pass (default: no) -Z time-passes=val -- measure time of each rustc pass (default: no) + -Z time-passes-format=val -- the format to use for -Z time-passes (`text` (default) or `json`) -Z tiny-const-eval-limit=val -- sets a tiny, non-configurable limit for const eval; useful for compiler tests -Z tls-model=val -- choose the TLS model to use (`rustc --print tls-models` for details) -Z trace-macros=val -- for every macro invocation, print its name and arguments (default: no) diff --git a/tests/ui/cfg/auxiliary/cfg_false_lib.rs b/tests/ui/cfg/auxiliary/cfg_false_lib.rs new file mode 100644 index 00000000000..3c011d72b02 --- /dev/null +++ b/tests/ui/cfg/auxiliary/cfg_false_lib.rs @@ -0,0 +1,6 @@ +// It is unclear whether a fully unconfigured crate should link to standard library, +// or what its `no_std`/`no_core`/`compiler_builtins` status, more precisely. +// Currently the usual standard library prelude is added to such crates, +// and therefore they link to libstd. + +#![cfg(FALSE)] diff --git a/tests/ui/cfg/cfg-false-feature.rs b/tests/ui/cfg/cfg-false-feature.rs new file mode 100644 index 00000000000..21ea3ec79b4 --- /dev/null +++ b/tests/ui/cfg/cfg-false-feature.rs @@ -0,0 +1,20 @@ +// It is unclear which features should be in effect in a fully unconfigured crate (issue #104633). +// Currently none on the features are in effect, so we get the feature gates reported. + +// check-pass +// compile-flags: --crate-type lib + +#![feature(decl_macro)] +#![cfg(FALSE)] +#![feature(box_syntax)] + +macro mac() {} //~ WARN `macro` is experimental + //~| WARN unstable syntax can change at any point in the future + +trait A = Clone; //~ WARN trait aliases are experimental + //~| WARN unstable syntax can change at any point in the future + +fn main() { + let box _ = Box::new(0); //~ WARN box pattern syntax is experimental + //~| WARN unstable syntax can change at any point in the future +} diff --git a/tests/ui/cfg/cfg-false-feature.stderr b/tests/ui/cfg/cfg-false-feature.stderr new file mode 100644 index 00000000000..14673fbdb14 --- /dev/null +++ b/tests/ui/cfg/cfg-false-feature.stderr @@ -0,0 +1,35 @@ +warning: trait aliases are experimental + --> $DIR/cfg-false-feature.rs:14:1 + | +LL | trait A = Clone; + | ^^^^^^^^^^^^^^^^ + | + = note: see issue #41517 <https://github.com/rust-lang/rust/issues/41517> for more information + = help: add `#![feature(trait_alias)]` to the crate attributes to enable + = warning: unstable syntax can change at any point in the future, causing a hard error! + = note: for more information, see issue #65860 <https://github.com/rust-lang/rust/issues/65860> + +warning: `macro` is experimental + --> $DIR/cfg-false-feature.rs:11:1 + | +LL | macro mac() {} + | ^^^^^^^^^^^^^^ + | + = note: see issue #39412 <https://github.com/rust-lang/rust/issues/39412> for more information + = help: add `#![feature(decl_macro)]` to the crate attributes to enable + = warning: unstable syntax can change at any point in the future, causing a hard error! + = note: for more information, see issue #65860 <https://github.com/rust-lang/rust/issues/65860> + +warning: box pattern syntax is experimental + --> $DIR/cfg-false-feature.rs:18:9 + | +LL | let box _ = Box::new(0); + | ^^^^^ + | + = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information + = help: add `#![feature(box_patterns)]` to the crate attributes to enable + = warning: unstable syntax can change at any point in the future, causing a hard error! + = note: for more information, see issue #65860 <https://github.com/rust-lang/rust/issues/65860> + +warning: 3 warnings emitted + diff --git a/tests/ui/cfg/cfg_false_no_std.rs b/tests/ui/cfg/cfg_false_no_std.rs new file mode 100644 index 00000000000..319ea078187 --- /dev/null +++ b/tests/ui/cfg/cfg_false_no_std.rs @@ -0,0 +1,11 @@ +// Currently no error because the panic handler is supplied by libstd linked though the empty +// library, but the desirable behavior is unclear (see comments in cfg_false_lib.rs). + +// check-pass +// aux-build: cfg_false_lib.rs + +#![no_std] + +extern crate cfg_false_lib as _; + +fn main() {} diff --git a/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr b/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr index 7b4d46b8209..6b3396a25cf 100644 --- a/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr +++ b/tests/ui/const-generics/generic_const_exprs/cross_crate_predicate.stderr @@ -1,8 +1,8 @@ error: unconstrained generic constant - --> $DIR/cross_crate_predicate.rs:7:13 + --> $DIR/cross_crate_predicate.rs:7:44 | LL | let _ = const_evaluatable_lib::test1::<T>(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^ | = help: try adding a `where` bound using this expression: `where [(); std::mem::size_of::<T>() - 1]:` note: required by a bound in `test1` @@ -12,10 +12,10 @@ LL | [u8; std::mem::size_of::<T>() - 1]: Sized, | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `test1` error: unconstrained generic constant - --> $DIR/cross_crate_predicate.rs:7:13 + --> $DIR/cross_crate_predicate.rs:7:44 | LL | let _ = const_evaluatable_lib::test1::<T>(); - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^ | = help: try adding a `where` bound using this expression: `where [(); std::mem::size_of::<T>() - 1]:` note: required by a bound in `test1` diff --git a/tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs b/tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs new file mode 100644 index 00000000000..64317b9d39a --- /dev/null +++ b/tests/ui/const-generics/generic_const_exprs/typeid-equality-by-subtyping.rs @@ -0,0 +1,52 @@ +// check-pass +// known-bug: #97156 + +#![feature(const_type_id, generic_const_exprs)] +#![allow(incomplete_features)] + +use std::any::TypeId; +// `One` and `Two` are currently considered equal types, as both +// `One <: Two` and `One :> Two` holds. +type One = for<'a> fn(&'a (), &'a ()); +type Two = for<'a, 'b> fn(&'a (), &'b ()); +trait AssocCt { + const ASSOC: usize; +} +const fn to_usize<T: 'static>() -> usize { + const WHAT_A_TYPE: TypeId = TypeId::of::<One>(); + match TypeId::of::<T>() { + WHAT_A_TYPE => 0, + _ => 1000, + } +} +impl<T: 'static> AssocCt for T { + const ASSOC: usize = to_usize::<T>(); +} + +trait WithAssoc<U> { + type Assoc; +} +impl<T: 'static> WithAssoc<()> for T where [(); <T as AssocCt>::ASSOC]: { + type Assoc = [u8; <T as AssocCt>::ASSOC]; +} + +fn generic<T: 'static, U>(x: <T as WithAssoc<U>>::Assoc) -> <T as WithAssoc<U>>::Assoc +where + [(); <T as AssocCt>::ASSOC]:, + T: WithAssoc<U>, +{ + x +} + + +fn unsound<T>(x: <One as WithAssoc<T>>::Assoc) -> <Two as WithAssoc<T>>::Assoc +where + One: WithAssoc<T>, +{ + let x: <Two as WithAssoc<T>>::Assoc = generic::<One, T>(x); + x +} + +fn main() { + println!("{:?}", unsound::<()>([])); +} diff --git a/tests/ui/const-generics/type_mismatch.stderr b/tests/ui/const-generics/type_mismatch.stderr index 6d8955e411e..394dd44d40d 100644 --- a/tests/ui/const-generics/type_mismatch.stderr +++ b/tests/ui/const-generics/type_mismatch.stderr @@ -1,8 +1,8 @@ error: the constant `N` is not of type `u8` - --> $DIR/type_mismatch.rs:2:5 + --> $DIR/type_mismatch.rs:2:11 | LL | bar::<N>() - | ^^^^^^^^ + | ^ expected `u8`, found `usize` | note: required by a bound in `bar` --> $DIR/type_mismatch.rs:6:8 diff --git a/tests/ui/consts/const-eval/panic-assoc-never-type.rs b/tests/ui/consts/const-eval/panic-assoc-never-type.rs index 28edf514402..1abe708d19e 100644 --- a/tests/ui/consts/const-eval/panic-assoc-never-type.rs +++ b/tests/ui/consts/const-eval/panic-assoc-never-type.rs @@ -11,5 +11,5 @@ impl PrintName { } fn main() { - let _ = PrintName::VOID; //~ constant + let _ = PrintName::VOID; //~ erroneous constant used } diff --git a/tests/ui/consts/const-eval/transmute-size-mismatch.rs b/tests/ui/consts/const-eval/transmute-size-mismatch.rs new file mode 100644 index 00000000000..2410baea28c --- /dev/null +++ b/tests/ui/consts/const-eval/transmute-size-mismatch.rs @@ -0,0 +1,24 @@ +#![feature(core_intrinsics)] +#![feature(custom_mir)] + +// These cases are statically rejected by `mem::transmute`, so we need custom +// MIR to be able to get to constant evaluation. +use std::intrinsics::mir::*; + +#[custom_mir(dialect = "runtime", phase = "initial")] +const unsafe fn mir_transmute<T, U>(x: T) -> U { + mir!{ + { + RET = CastTransmute(x); + //~^ ERROR evaluation of constant value failed + //~| ERROR evaluation of constant value failed + Return() + } + } +} + +const FROM_BIGGER: u16 = unsafe { mir_transmute(123_i32) }; + +const FROM_SMALLER: u32 = unsafe { mir_transmute(123_i16) }; + +fn main() {} diff --git a/tests/ui/consts/const-eval/transmute-size-mismatch.stderr b/tests/ui/consts/const-eval/transmute-size-mismatch.stderr new file mode 100644 index 00000000000..e051491d343 --- /dev/null +++ b/tests/ui/consts/const-eval/transmute-size-mismatch.stderr @@ -0,0 +1,37 @@ +error[E0080]: evaluation of constant value failed + --> $DIR/transmute-size-mismatch.rs:12:13 + | +LL | RET = CastTransmute(x); + | ^^^^^^^^^^^^^^^^^^^^^^ transmuting from 4-byte type to 2-byte type: `i32` -> `u16` + | +note: inside `mir_transmute::<i32, u16>` + --> $DIR/transmute-size-mismatch.rs:12:13 + | +LL | RET = CastTransmute(x); + | ^^^^^^^^^^^^^^^^^^^^^^ +note: inside `FROM_BIGGER` + --> $DIR/transmute-size-mismatch.rs:20:35 + | +LL | const FROM_BIGGER: u16 = unsafe { mir_transmute(123_i32) }; + | ^^^^^^^^^^^^^^^^^^^^^^ + +error[E0080]: evaluation of constant value failed + --> $DIR/transmute-size-mismatch.rs:12:13 + | +LL | RET = CastTransmute(x); + | ^^^^^^^^^^^^^^^^^^^^^^ transmuting from 2-byte type to 4-byte type: `i16` -> `u32` + | +note: inside `mir_transmute::<i16, u32>` + --> $DIR/transmute-size-mismatch.rs:12:13 + | +LL | RET = CastTransmute(x); + | ^^^^^^^^^^^^^^^^^^^^^^ +note: inside `FROM_SMALLER` + --> $DIR/transmute-size-mismatch.rs:22:36 + | +LL | const FROM_SMALLER: u32 = unsafe { mir_transmute(123_i16) }; + | ^^^^^^^^^^^^^^^^^^^^^^ + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0080`. diff --git a/tests/ui/consts/const-eval/ub-enum.32bit.stderr b/tests/ui/consts/const-eval/ub-enum.32bit.stderr index 2d86bd88f1c..3ad1ac974c8 100644 --- a/tests/ui/consts/const-eval/ub-enum.32bit.stderr +++ b/tests/ui/consts/const-eval/ub-enum.32bit.stderr @@ -108,13 +108,13 @@ error[E0080]: evaluation of constant value failed --> $DIR/ub-enum.rs:96:77 | LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) }; - | ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Ok)>.0.1: encountered a value of uninhabited type Never error[E0080]: evaluation of constant value failed --> $DIR/ub-enum.rs:98:77 | LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) }; - | ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Ok)>.0.1: encountered a value of the never type `!` error: aborting due to 13 previous errors diff --git a/tests/ui/consts/const-eval/ub-enum.64bit.stderr b/tests/ui/consts/const-eval/ub-enum.64bit.stderr index a89d7ec5f6d..a66706d1af9 100644 --- a/tests/ui/consts/const-eval/ub-enum.64bit.stderr +++ b/tests/ui/consts/const-eval/ub-enum.64bit.stderr @@ -108,13 +108,13 @@ error[E0080]: evaluation of constant value failed --> $DIR/ub-enum.rs:96:77 | LL | const BAD_UNINHABITED_WITH_DATA1: Result<(i32, Never), (i32, !)> = unsafe { mem::transmute(0u64) }; - | ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Ok)>.0.1: encountered a value of uninhabited type Never error[E0080]: evaluation of constant value failed --> $DIR/ub-enum.rs:98:77 | LL | const BAD_UNINHABITED_WITH_DATA2: Result<(i32, !), (i32, Never)> = unsafe { mem::transmute(0u64) }; - | ^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^ constructing invalid value at .<enum-variant(Ok)>.0.1: encountered a value of the never type `!` error: aborting due to 13 previous errors diff --git a/tests/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr b/tests/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr index 231005d7e39..74bc6317c80 100644 --- a/tests/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr +++ b/tests/ui/consts/const-eval/validate_uninhabited_zsts.32bit.stderr @@ -11,7 +11,7 @@ error[E0080]: evaluation of constant value failed --> $DIR/validate_uninhabited_zsts.rs:4:14 | LL | unsafe { std::mem::transmute(()) } - | ^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of the never type `!` | note: inside `foo` --> $DIR/validate_uninhabited_zsts.rs:4:14 diff --git a/tests/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr b/tests/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr index 231005d7e39..74bc6317c80 100644 --- a/tests/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr +++ b/tests/ui/consts/const-eval/validate_uninhabited_zsts.64bit.stderr @@ -11,7 +11,7 @@ error[E0080]: evaluation of constant value failed --> $DIR/validate_uninhabited_zsts.rs:4:14 | LL | unsafe { std::mem::transmute(()) } - | ^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of the never type `!` | note: inside `foo` --> $DIR/validate_uninhabited_zsts.rs:4:14 diff --git a/tests/ui/feature-gates/feature-gate-link_cfg.stderr b/tests/ui/feature-gates/feature-gate-link_cfg.stderr index 8f47d596521..97b6cbca412 100644 --- a/tests/ui/feature-gates/feature-gate-link_cfg.stderr +++ b/tests/ui/feature-gates/feature-gate-link_cfg.stderr @@ -4,7 +4,6 @@ error[E0658]: link cfg is unstable LL | #[link(name = "foo", cfg(foo))] | ^^^^^^^^ | - = note: see issue #37406 <https://github.com/rust-lang/rust/issues/37406> for more information = help: add `#![feature(link_cfg)]` to the crate attributes to enable error: aborting due to previous error diff --git a/tests/ui/impl-trait/nested-return-type2.rs b/tests/ui/impl-trait/nested-return-type2.rs index fe883ce6fc8..e1d5511379e 100644 --- a/tests/ui/impl-trait/nested-return-type2.rs +++ b/tests/ui/impl-trait/nested-return-type2.rs @@ -26,7 +26,6 @@ impl<R: Duh, F: FnMut() -> R> Trait for F { // Lazy TAIT would error out, but we inserted a hack to make it work again, // keeping backwards compatibility. fn foo() -> impl Trait<Assoc = impl Send> { - //~^ WARN opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds || 42 } diff --git a/tests/ui/impl-trait/nested-return-type2.stderr b/tests/ui/impl-trait/nested-return-type2.stderr deleted file mode 100644 index 09ad3bd05c1..00000000000 --- a/tests/ui/impl-trait/nested-return-type2.stderr +++ /dev/null @@ -1,17 +0,0 @@ -warning: opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds - --> $DIR/nested-return-type2.rs:28:24 - | -LL | type Assoc: Duh; - | --- this associated type bound is unsatisfied for `impl Send` -... -LL | fn foo() -> impl Trait<Assoc = impl Send> { - | ^^^^^^^^^^^^^^^^^ - | - = note: `#[warn(opaque_hidden_inferred_bound)]` on by default -help: add this bound - | -LL | fn foo() -> impl Trait<Assoc = impl Send + Duh> { - | +++++ - -warning: 1 warning emitted - diff --git a/tests/ui/impl-trait/nested-return-type3.rs b/tests/ui/impl-trait/nested-return-type3.rs index 5a764fc4c28..74b4dae22eb 100644 --- a/tests/ui/impl-trait/nested-return-type3.rs +++ b/tests/ui/impl-trait/nested-return-type3.rs @@ -13,7 +13,6 @@ impl<F: Duh> Trait for F { } fn foo() -> impl Trait<Assoc = impl Send> { - //~^ WARN opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds 42 } diff --git a/tests/ui/impl-trait/nested-return-type3.stderr b/tests/ui/impl-trait/nested-return-type3.stderr deleted file mode 100644 index 632de71aa4c..00000000000 --- a/tests/ui/impl-trait/nested-return-type3.stderr +++ /dev/null @@ -1,17 +0,0 @@ -warning: opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds - --> $DIR/nested-return-type3.rs:15:24 - | -LL | type Assoc: Duh; - | --- this associated type bound is unsatisfied for `impl Send` -... -LL | fn foo() -> impl Trait<Assoc = impl Send> { - | ^^^^^^^^^^^^^^^^^ - | - = note: `#[warn(opaque_hidden_inferred_bound)]` on by default -help: add this bound - | -LL | fn foo() -> impl Trait<Assoc = impl Send + Duh> { - | +++++ - -warning: 1 warning emitted - diff --git a/tests/ui/imports/auxiliary/glob-conflict.rs b/tests/ui/imports/auxiliary/glob-conflict.rs index c83db64c643..8a146378b43 100644 --- a/tests/ui/imports/auxiliary/glob-conflict.rs +++ b/tests/ui/imports/auxiliary/glob-conflict.rs @@ -1,3 +1,5 @@ +#![allow(ambiguous_glob_reexports)] + mod m1 { pub fn f() {} } diff --git a/tests/ui/imports/issue-99695-b.fixed b/tests/ui/imports/issue-99695-b.fixed index 0f688fa2823..0e60c73b67a 100644 --- a/tests/ui/imports/issue-99695-b.fixed +++ b/tests/ui/imports/issue-99695-b.fixed @@ -1,5 +1,5 @@ // run-rustfix -#![allow(unused, nonstandard_style, useless_anonymous_reexport)] +#![allow(unused, nonstandard_style)] mod m { mod p { diff --git a/tests/ui/imports/issue-99695-b.rs b/tests/ui/imports/issue-99695-b.rs index b433997e53f..031443a1f5d 100644 --- a/tests/ui/imports/issue-99695-b.rs +++ b/tests/ui/imports/issue-99695-b.rs @@ -1,5 +1,5 @@ // run-rustfix -#![allow(unused, nonstandard_style, useless_anonymous_reexport)] +#![allow(unused, nonstandard_style)] mod m { mod p { diff --git a/tests/ui/imports/issue-99695.fixed b/tests/ui/imports/issue-99695.fixed index 17ff409324e..6bf228b23aa 100644 --- a/tests/ui/imports/issue-99695.fixed +++ b/tests/ui/imports/issue-99695.fixed @@ -1,5 +1,5 @@ // run-rustfix -#![allow(unused, nonstandard_style, useless_anonymous_reexport)] +#![allow(unused, nonstandard_style)] mod m { #[macro_export] macro_rules! nu { diff --git a/tests/ui/imports/issue-99695.rs b/tests/ui/imports/issue-99695.rs index b8979bcb734..f7199f1497a 100644 --- a/tests/ui/imports/issue-99695.rs +++ b/tests/ui/imports/issue-99695.rs @@ -1,5 +1,5 @@ // run-rustfix -#![allow(unused, nonstandard_style, useless_anonymous_reexport)] +#![allow(unused, nonstandard_style)] mod m { #[macro_export] macro_rules! nu { diff --git a/tests/ui/imports/local-modularized-tricky-fail-1.rs b/tests/ui/imports/local-modularized-tricky-fail-1.rs index 29e9b8ec841..ce700ae0de9 100644 --- a/tests/ui/imports/local-modularized-tricky-fail-1.rs +++ b/tests/ui/imports/local-modularized-tricky-fail-1.rs @@ -1,4 +1,5 @@ #![feature(decl_macro)] +#![allow(ambiguous_glob_reexports)] macro_rules! define_exported { () => { #[macro_export] diff --git a/tests/ui/imports/local-modularized-tricky-fail-1.stderr b/tests/ui/imports/local-modularized-tricky-fail-1.stderr index 20eadaaaa56..52a01e8bcdf 100644 --- a/tests/ui/imports/local-modularized-tricky-fail-1.stderr +++ b/tests/ui/imports/local-modularized-tricky-fail-1.stderr @@ -1,12 +1,12 @@ error[E0659]: `exported` is ambiguous - --> $DIR/local-modularized-tricky-fail-1.rs:28:1 + --> $DIR/local-modularized-tricky-fail-1.rs:29:1 | LL | exported!(); | ^^^^^^^^ ambiguous name | = note: ambiguous because of a conflict between a name from a glob import and a macro-expanded name in the same module during import or macro resolution note: `exported` could refer to the macro defined here - --> $DIR/local-modularized-tricky-fail-1.rs:5:5 + --> $DIR/local-modularized-tricky-fail-1.rs:6:5 | LL | / macro_rules! exported { LL | | () => () @@ -16,7 +16,7 @@ LL | | } LL | define_exported!(); | ------------------ in this macro invocation note: `exported` could also refer to the macro imported here - --> $DIR/local-modularized-tricky-fail-1.rs:22:5 + --> $DIR/local-modularized-tricky-fail-1.rs:23:5 | LL | use inner1::*; | ^^^^^^^^^ @@ -24,7 +24,7 @@ LL | use inner1::*; = note: this error originates in the macro `define_exported` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0659]: `panic` is ambiguous - --> $DIR/local-modularized-tricky-fail-1.rs:35:5 + --> $DIR/local-modularized-tricky-fail-1.rs:36:5 | LL | panic!(); | ^^^^^ ambiguous name @@ -32,7 +32,7 @@ LL | panic!(); = note: ambiguous because of a conflict between a macro-expanded name and a less macro-expanded name from outer scope during import or macro resolution = note: `panic` could refer to a macro from prelude note: `panic` could also refer to the macro defined here - --> $DIR/local-modularized-tricky-fail-1.rs:11:5 + --> $DIR/local-modularized-tricky-fail-1.rs:12:5 | LL | / macro_rules! panic { LL | | () => () @@ -45,7 +45,7 @@ LL | define_panic!(); = note: this error originates in the macro `define_panic` (in Nightly builds, run with -Z macro-backtrace for more info) error[E0659]: `include` is ambiguous - --> $DIR/local-modularized-tricky-fail-1.rs:46:1 + --> $DIR/local-modularized-tricky-fail-1.rs:47:1 | LL | include!(); | ^^^^^^^ ambiguous name @@ -53,7 +53,7 @@ LL | include!(); = note: ambiguous because of a conflict between a macro-expanded name and a less macro-expanded name from outer scope during import or macro resolution = note: `include` could refer to a macro from prelude note: `include` could also refer to the macro defined here - --> $DIR/local-modularized-tricky-fail-1.rs:17:5 + --> $DIR/local-modularized-tricky-fail-1.rs:18:5 | LL | / macro_rules! include { LL | | () => () diff --git a/tests/ui/lint/anonymous-reexport.rs b/tests/ui/lint/anonymous-reexport.rs index 5d56ae6f969..11ac5d07140 100644 --- a/tests/ui/lint/anonymous-reexport.rs +++ b/tests/ui/lint/anonymous-reexport.rs @@ -1,4 +1,4 @@ -#![deny(useless_anonymous_reexport)] +#![deny(unused_imports)] #![crate_type = "rlib"] mod my_mod { @@ -9,13 +9,11 @@ mod my_mod { } pub use self::my_mod::Foo as _; -pub use self::my_mod::TyFoo as _; -pub use self::my_mod::Bar as _; //~ ERROR -pub use self::my_mod::TyBar as _; //~ ERROR -pub use self::my_mod::{Bar as _}; //~ ERROR -pub use self::my_mod::{Bar as _, Foo as _}; //~ ERROR -pub use self::my_mod::{Bar as _, TyBar as _}; -//~^ ERROR -//~| ERROR +pub use self::my_mod::TyFoo as _; //~ ERROR unused import +pub use self::my_mod::Bar as _; //~ ERROR unused import +pub use self::my_mod::TyBar as _; //~ ERROR unused import +pub use self::my_mod::{Bar as _}; //~ ERROR unused import +pub use self::my_mod::{Bar as _, Foo as _}; //~ ERROR unused import +pub use self::my_mod::{Bar as _, TyBar as _}; //~ ERROR unused imports #[allow(unused_imports)] use self::my_mod::TyBar as _; diff --git a/tests/ui/lint/anonymous-reexport.stderr b/tests/ui/lint/anonymous-reexport.stderr index f4f8b41c417..e3854a5459e 100644 --- a/tests/ui/lint/anonymous-reexport.stderr +++ b/tests/ui/lint/anonymous-reexport.stderr @@ -1,55 +1,44 @@ -error: useless anonymous re-export - --> $DIR/anonymous-reexport.rs:13:1 +error: unused import: `self::my_mod::TyFoo as _` + --> $DIR/anonymous-reexport.rs:12:9 | -LL | pub use self::my_mod::Bar as _; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | pub use self::my_mod::TyFoo as _; + | ^^^^^^^^^^^^^^^^^^^^^^^^ | - = note: only anonymous re-exports of traits are useful, this is a `struct` note: the lint level is defined here --> $DIR/anonymous-reexport.rs:1:9 | -LL | #![deny(useless_anonymous_reexport)] - | ^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | #![deny(unused_imports)] + | ^^^^^^^^^^^^^^ -error: useless anonymous re-export - --> $DIR/anonymous-reexport.rs:14:1 +error: unused import: `self::my_mod::Bar as _` + --> $DIR/anonymous-reexport.rs:13:9 | -LL | pub use self::my_mod::TyBar as _; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +LL | pub use self::my_mod::Bar as _; + | ^^^^^^^^^^^^^^^^^^^^^^ + +error: unused import: `self::my_mod::TyBar as _` + --> $DIR/anonymous-reexport.rs:14:9 | - = note: only anonymous re-exports of traits are useful, this is a `type alias` +LL | pub use self::my_mod::TyBar as _; + | ^^^^^^^^^^^^^^^^^^^^^^^^ -error: useless anonymous re-export +error: unused import: `Bar as _` --> $DIR/anonymous-reexport.rs:15:24 | LL | pub use self::my_mod::{Bar as _}; | ^^^^^^^^ - | - = note: only anonymous re-exports of traits are useful, this is a `struct` -error: useless anonymous re-export +error: unused import: `Bar as _` --> $DIR/anonymous-reexport.rs:16:24 | LL | pub use self::my_mod::{Bar as _, Foo as _}; | ^^^^^^^^ - | - = note: only anonymous re-exports of traits are useful, this is a `struct` -error: useless anonymous re-export +error: unused imports: `Bar as _`, `TyBar as _` --> $DIR/anonymous-reexport.rs:17:24 | LL | pub use self::my_mod::{Bar as _, TyBar as _}; - | ^^^^^^^^ - | - = note: only anonymous re-exports of traits are useful, this is a `struct` - -error: useless anonymous re-export - --> $DIR/anonymous-reexport.rs:17:34 - | -LL | pub use self::my_mod::{Bar as _, TyBar as _}; - | ^^^^^^^^^^ - | - = note: only anonymous re-exports of traits are useful, this is a `type alias` + | ^^^^^^^^ ^^^^^^^^^^ error: aborting due to 6 previous errors diff --git a/tests/ui/resolve/issue-107563-ambiguous-glob-reexports.rs b/tests/ui/resolve/issue-107563-ambiguous-glob-reexports.rs new file mode 100644 index 00000000000..431213e25e4 --- /dev/null +++ b/tests/ui/resolve/issue-107563-ambiguous-glob-reexports.rs @@ -0,0 +1,33 @@ +#![deny(ambiguous_glob_reexports)] + +pub mod foo { + pub type X = u8; +} + +pub mod bar { + pub type X = u8; + pub type Y = u8; +} + +pub use foo::*; +//~^ ERROR ambiguous glob re-exports +pub use bar::*; + +mod ambiguous { + mod m1 { pub type A = u8; } + mod m2 { pub type A = u8; } + pub use self::m1::*; + //~^ ERROR ambiguous glob re-exports + pub use self::m2::*; +} + +pub mod single { + pub use ambiguous::A; + //~^ ERROR `A` is ambiguous +} + +pub mod glob { + pub use ambiguous::*; +} + +pub fn main() {} diff --git a/tests/ui/resolve/issue-107563-ambiguous-glob-reexports.stderr b/tests/ui/resolve/issue-107563-ambiguous-glob-reexports.stderr new file mode 100644 index 00000000000..07e61dd8643 --- /dev/null +++ b/tests/ui/resolve/issue-107563-ambiguous-glob-reexports.stderr @@ -0,0 +1,47 @@ +error[E0659]: `A` is ambiguous + --> $DIR/issue-107563-ambiguous-glob-reexports.rs:25:24 + | +LL | pub use ambiguous::A; + | ^ ambiguous name + | + = note: ambiguous because of multiple glob imports of a name in the same module +note: `A` could refer to the type alias imported here + --> $DIR/issue-107563-ambiguous-glob-reexports.rs:19:13 + | +LL | pub use self::m1::*; + | ^^^^^^^^^^^ + = help: consider adding an explicit import of `A` to disambiguate +note: `A` could also refer to the type alias imported here + --> $DIR/issue-107563-ambiguous-glob-reexports.rs:21:13 + | +LL | pub use self::m2::*; + | ^^^^^^^^^^^ + = help: consider adding an explicit import of `A` to disambiguate + +error: ambiguous glob re-exports + --> $DIR/issue-107563-ambiguous-glob-reexports.rs:12:9 + | +LL | pub use foo::*; + | ^^^^^^ the name `X` in the type namespace is first re-exported here +LL | +LL | pub use bar::*; + | ------ but the name `X` in the type namespace is also re-exported here + | +note: the lint level is defined here + --> $DIR/issue-107563-ambiguous-glob-reexports.rs:1:9 + | +LL | #![deny(ambiguous_glob_reexports)] + | ^^^^^^^^^^^^^^^^^^^^^^^^ + +error: ambiguous glob re-exports + --> $DIR/issue-107563-ambiguous-glob-reexports.rs:19:13 + | +LL | pub use self::m1::*; + | ^^^^^^^^^^^ the name `A` in the type namespace is first re-exported here +LL | +LL | pub use self::m2::*; + | ----------- but the name `A` in the type namespace is also re-exported here + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0659`. diff --git a/tests/ui/specialization/min_specialization/bad-const-wf-doesnt-specialize.stderr b/tests/ui/specialization/min_specialization/bad-const-wf-doesnt-specialize.stderr index 6d7028c5e70..83f311efd39 100644 --- a/tests/ui/specialization/min_specialization/bad-const-wf-doesnt-specialize.stderr +++ b/tests/ui/specialization/min_specialization/bad-const-wf-doesnt-specialize.stderr @@ -2,7 +2,7 @@ error: the constant `N` is not of type `usize` --> $DIR/bad-const-wf-doesnt-specialize.rs:8:29 | LL | impl<const N: i32> Copy for S<N> {} - | ^^^^ + | ^^^^ expected `usize`, found `i32` | note: required by a bound in `S` --> $DIR/bad-const-wf-doesnt-specialize.rs:6:10 diff --git a/tests/ui/statics/uninhabited-static.stderr b/tests/ui/statics/uninhabited-static.stderr index 437053a4476..35fdcae6a59 100644 --- a/tests/ui/statics/uninhabited-static.stderr +++ b/tests/ui/statics/uninhabited-static.stderr @@ -47,7 +47,7 @@ error[E0080]: could not evaluate static initializer --> $DIR/uninhabited-static.rs:12:31 | LL | static VOID2: Void = unsafe { std::mem::transmute(()) }; - | ^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of uninhabited type Void warning: the type `Void` does not permit zero-initialization --> $DIR/uninhabited-static.rs:12:31 @@ -66,7 +66,7 @@ error[E0080]: could not evaluate static initializer --> $DIR/uninhabited-static.rs:16:32 | LL | static NEVER2: Void = unsafe { std::mem::transmute(()) }; - | ^^^^^^^^^^^^^^^^^^^^^^^ transmuting to uninhabited type + | ^^^^^^^^^^^^^^^^^^^^^^^ constructing invalid value: encountered a value of uninhabited type Void warning: the type `Void` does not permit zero-initialization --> $DIR/uninhabited-static.rs:16:32 diff --git a/tests/ui/suggestions/issue-109436.rs b/tests/ui/suggestions/issue-109436.rs new file mode 100644 index 00000000000..e45ee5991db --- /dev/null +++ b/tests/ui/suggestions/issue-109436.rs @@ -0,0 +1,13 @@ +struct Foo; +struct Bar; + +impl From<&Foo> for Bar { + fn from(foo: &Foo) -> Bar { + Bar + } +} + +fn main() { + let foo = Foo; + let b: Bar = foo.into(); //~ ERROR E0277 +} diff --git a/tests/ui/suggestions/issue-109436.stderr b/tests/ui/suggestions/issue-109436.stderr new file mode 100644 index 00000000000..48518b33d12 --- /dev/null +++ b/tests/ui/suggestions/issue-109436.stderr @@ -0,0 +1,15 @@ +error[E0277]: the trait bound `Foo: Into<_>` is not satisfied + --> $DIR/issue-109436.rs:12:22 + | +LL | let b: Bar = foo.into(); + | ^^^^ the trait `~const Into<_>` is not implemented for `Foo` + | + = note: required for `Foo` to implement `Into<Bar>` +help: consider borrowing here + | +LL | let b: Bar = (&foo).into(); + | ++ + + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/new-solver/alias-eq-in-canonical-response.rs b/tests/ui/traits/new-solver/alias-eq-in-canonical-response.rs new file mode 100644 index 00000000000..4bfb6323a53 --- /dev/null +++ b/tests/ui/traits/new-solver/alias-eq-in-canonical-response.rs @@ -0,0 +1,40 @@ +// check-pass +// compile-flags: -Ztrait-solver=next + +trait Foo { + type Gat<'a> + where + Self: 'a; + fn bar(&self) -> Self::Gat<'_>; +} + +enum Option<T> { + Some(T), + None, +} + +impl<T> Option<T> { + fn as_ref(&self) -> Option<&T> { + match self { + Option::Some(t) => Option::Some(t), + Option::None => Option::None, + } + } + + fn map<U>(self, f: impl FnOnce(T) -> U) -> Option<U> { + match self { + Option::Some(t) => Option::Some(f(t)), + Option::None => Option::None, + } + } +} + +impl<T: Foo + 'static> Foo for Option<T> { + type Gat<'a> = Option<<T as Foo>::Gat<'a>> where Self: 'a; + + fn bar(&self) -> Self::Gat<'_> { + self.as_ref().map(Foo::bar) + } +} + +fn main() {} diff --git a/tests/ui/traits/new-solver/alias-sub.rs b/tests/ui/traits/new-solver/alias-sub.rs new file mode 100644 index 00000000000..30c1981a92e --- /dev/null +++ b/tests/ui/traits/new-solver/alias-sub.rs @@ -0,0 +1,34 @@ +// compile-flags: -Ztrait-solver=next +// check-pass + +trait Trait { + type Assoc: Sized; +} + +impl Trait for &'static str { + type Assoc = &'static str; +} + +// Wrapper is just here to get around stupid `Sized` obligations in mir typeck +struct Wrapper<T: ?Sized>(std::marker::PhantomData<T>); +fn mk<T: Trait>(x: T) -> Wrapper<<T as Trait>::Assoc> { todo!() } + + +trait IsStaticStr {} +impl IsStaticStr for (&'static str,) {} +fn define<T: IsStaticStr>(_: T) {} + +fn foo<'a, T: Trait>() { + let y = Default::default(); + + // `<?0 as Trait>::Assoc <: &'a str` + // In the old solver, this would *equate* the LHS and RHS. + let _: Wrapper<&'a str> = mk(y); + + // ... then later on, we constrain `?0 = &'static str` + // but that should not mean that `'a = 'static`, because + // we should use *sub* above. + define((y,)); +} + +fn main() {} diff --git a/tests/ui/transmutability/issue-101739-1.stderr b/tests/ui/transmutability/issue-101739-1.stderr index f0fa93722b8..bf947d0ea4a 100644 --- a/tests/ui/transmutability/issue-101739-1.stderr +++ b/tests/ui/transmutability/issue-101739-1.stderr @@ -8,7 +8,7 @@ error: the constant `ASSUME_ALIGNMENT` is not of type `Assume` --> $DIR/issue-101739-1.rs:8:14 | LL | Dst: BikeshedIntrinsicFrom<Src, Context, ASSUME_ALIGNMENT>, - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `Assume`, found `bool` | note: required by a bound in `BikeshedIntrinsicFrom` --> $SRC_DIR/core/src/mem/transmutability.rs:LL:COL |