diff --git a/Cargo.lock b/Cargo.lock index 28684a310a3c7..544cb4faef222 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2496,7 +2496,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "3742b2c103b9f06bc9fff0a37ff4912935851bee6d36f3c02bcc755bcfec228f" dependencies = [ "lock_api", - "parking_lot_core 0.9.3", + "parking_lot_core 0.9.4", ] [[package]] @@ -2515,15 +2515,15 @@ dependencies = [ [[package]] name = "parking_lot_core" -version = "0.9.3" +version = "0.9.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "09a279cbf25cb0757810394fbc1e359949b59e348145c643a939a525692e6929" +checksum = "4dc9e0dc2adc1c69d09143aff38d3d30c5c3f0df0dad82e6d25547af174ebec0" dependencies = [ "cfg-if 1.0.0", "libc", "redox_syscall", "smallvec", - "windows-sys 0.36.1", + "windows-sys 0.42.0", ] [[package]] @@ -2748,9 +2748,9 @@ dependencies = [ [[package]] name = "psm" -version = "0.1.16" +version = "0.1.21" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "cd136ff4382c4753fc061cb9e4712ab2af263376b95bbd5bd8cd50c020b78e69" +checksum = "5787f7cda34e3033a72192c018bc5883100330f362ef279a8cbccfce8bb4e874" dependencies = [ "cc", ] @@ -4651,9 +4651,9 @@ checksum = "a8f112729512f8e442d81f95a8a7ddf2b7c6b8a1a6f509a95864142b30cab2d3" [[package]] name = "stacker" -version = "0.1.14" +version = "0.1.15" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "90939d5171a4420b3ff5fbc8954d641e7377335454c259dcb80786f3f21dc9b4" +checksum = "c886bd4480155fd3ef527d45e9ac8dd7118a898a46530b7b94c3e21866259fce" dependencies = [ "cc", "cfg-if 1.0.0", @@ -5473,17 +5473,25 @@ dependencies = [ [[package]] name = "windows-sys" -version = "0.36.1" +version = "0.42.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2" +checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7" dependencies = [ - "windows_aarch64_msvc 0.36.1", - "windows_i686_gnu 0.36.1", - "windows_i686_msvc 0.36.1", - "windows_x86_64_gnu 0.36.1", - "windows_x86_64_msvc 0.36.1", + "windows_aarch64_gnullvm", + "windows_aarch64_msvc 0.42.0", + "windows_i686_gnu 0.42.0", + "windows_i686_msvc 0.42.0", + "windows_x86_64_gnu 0.42.0", + "windows_x86_64_gnullvm", + "windows_x86_64_msvc 0.42.0", ] +[[package]] +name = "windows_aarch64_gnullvm" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e" + [[package]] name = "windows_aarch64_msvc" version = "0.28.0" @@ -5492,9 +5500,9 @@ checksum = "52695a41e536859d5308cc613b4a022261a274390b25bd29dfff4bf08505f3c2" [[package]] name = "windows_aarch64_msvc" -version = "0.36.1" +version = "0.42.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47" +checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4" [[package]] name = "windows_i686_gnu" @@ -5504,9 +5512,9 @@ checksum = "f54725ac23affef038fecb177de6c9bf065787c2f432f79e3c373da92f3e1d8a" [[package]] name = "windows_i686_gnu" -version = "0.36.1" +version = "0.42.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6" +checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7" [[package]] name = "windows_i686_msvc" @@ -5516,9 +5524,9 @@ checksum = "51d5158a43cc43623c0729d1ad6647e62fa384a3d135fd15108d37c683461f64" [[package]] name = "windows_i686_msvc" -version = "0.36.1" +version = "0.42.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024" +checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246" [[package]] name = "windows_x86_64_gnu" @@ -5528,9 +5536,15 @@ checksum = "bc31f409f565611535130cfe7ee8e6655d3fa99c1c61013981e491921b5ce954" [[package]] name = "windows_x86_64_gnu" -version = "0.36.1" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed" + +[[package]] +name = "windows_x86_64_gnullvm" +version = "0.42.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1" +checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028" [[package]] name = "windows_x86_64_msvc" @@ -5540,9 +5554,9 @@ checksum = "3f2b8c7cbd3bfdddd9ab98769f9746a7fad1bca236554cd032b78d768bc0e89f" [[package]] name = "windows_x86_64_msvc" -version = "0.36.1" +version = "0.42.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680" +checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5" [[package]] name = "xattr" diff --git a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs index 8987a51757cd5..7f26e970e3094 100644 --- a/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs @@ -724,13 +724,19 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> { borrow_span, &self.describe_any_place(borrow.borrowed_place.as_ref()), ); - - borrow_spans.var_span_label( + borrow_spans.var_subdiag( &mut err, - { + |var_span| { + use crate::session_diagnostics::CaptureVarCause::*; let place = &borrow.borrowed_place; let desc_place = self.describe_any_place(place.as_ref()); - format!("borrow occurs due to use of {}{}", desc_place, borrow_spans.describe()) + match borrow_spans { + UseSpans::ClosureUse { generator_kind, .. } => match generator_kind { + Some(_) => BorrowUsePlaceGenerator { place: desc_place, var_span }, + None => BorrowUsePlaceClosure { place: desc_place, var_span }, + }, + _ => BorrowUsePlace { place: desc_place, var_span }, + } }, "mutable", ); diff --git a/compiler/rustc_borrowck/src/diagnostics/mod.rs b/compiler/rustc_borrowck/src/diagnostics/mod.rs index 534d9ecae6e6f..61518378e3d0c 100644 --- a/compiler/rustc_borrowck/src/diagnostics/mod.rs +++ b/compiler/rustc_borrowck/src/diagnostics/mod.rs @@ -623,6 +623,26 @@ impl UseSpans<'_> { } } + /// Add a subdiagnostic to the use of the captured variable, if it exists. + pub(super) fn var_subdiag( + self, + err: &mut Diagnostic, + f: impl Fn(Span) -> crate::session_diagnostics::CaptureVarCause, + kind_desc: impl Into, + ) { + if let UseSpans::ClosureUse { capture_kind_span, path_span, .. } = self { + if capture_kind_span == path_span { + err.subdiagnostic(f(capture_kind_span)); + } else { + err.subdiagnostic(crate::session_diagnostics::CaptureVarKind { + kind_desc: kind_desc.into(), + kind_span: capture_kind_span, + }); + err.subdiagnostic(f(path_span)); + } + } + } + /// Returns `false` if this place is not used in a closure. pub(super) fn for_closure(&self) -> bool { match *self { diff --git a/compiler/rustc_borrowck/src/session_diagnostics.rs b/compiler/rustc_borrowck/src/session_diagnostics.rs index fe24f85fae10a..824f20a31bb09 100644 --- a/compiler/rustc_borrowck/src/session_diagnostics.rs +++ b/compiler/rustc_borrowck/src/session_diagnostics.rs @@ -148,3 +148,33 @@ pub(crate) enum RequireStaticErr { multi_span: MultiSpan, }, } + +#[derive(Subdiagnostic)] +#[label(borrowck_capture_kind_label)] +pub(crate) struct CaptureVarKind { + pub kind_desc: String, + #[primary_span] + pub kind_span: Span, +} + +#[derive(Subdiagnostic)] +pub(crate) enum CaptureVarCause { + #[label(borrowck_var_borrow_by_use_place)] + BorrowUsePlace { + place: String, + #[primary_span] + var_span: Span, + }, + #[label(borrowck_var_borrow_by_use_place_in_generator)] + BorrowUsePlaceGenerator { + place: String, + #[primary_span] + var_span: Span, + }, + #[label(borrowck_var_borrow_by_use_place_in_closure)] + BorrowUsePlaceClosure { + place: String, + #[primary_span] + var_span: Span, + }, +} diff --git a/compiler/rustc_codegen_llvm/src/consts.rs b/compiler/rustc_codegen_llvm/src/consts.rs index dd3c43ba5ca7c..bf5ac4e503e3f 100644 --- a/compiler/rustc_codegen_llvm/src/consts.rs +++ b/compiler/rustc_codegen_llvm/src/consts.rs @@ -19,6 +19,7 @@ use rustc_middle::mir::mono::MonoItem; use rustc_middle::ty::layout::LayoutOf; use rustc_middle::ty::{self, Instance, Ty}; use rustc_middle::{bug, span_bug}; +use rustc_session::config::Lto; use rustc_target::abi::{ AddressSpace, Align, HasDataLayout, Primitive, Scalar, Size, WrappingRange, }; @@ -303,7 +304,8 @@ impl<'ll> CodegenCx<'ll, '_> { // ThinLTO can't handle this workaround in all cases, so we don't // emit the attrs. Instead we make them unnecessary by disallowing // dynamic linking when linker plugin based LTO is enabled. - !self.tcx.sess.opts.cg.linker_plugin_lto.enabled(); + !self.tcx.sess.opts.cg.linker_plugin_lto.enabled() && + self.tcx.sess.lto() != Lto::Thin; // If this assertion triggers, there's something wrong with commandline // argument validation. diff --git a/compiler/rustc_data_structures/Cargo.toml b/compiler/rustc_data_structures/Cargo.toml index 5152d5ab0465c..5afce15e26bfc 100644 --- a/compiler/rustc_data_structures/Cargo.toml +++ b/compiler/rustc_data_structures/Cargo.toml @@ -23,7 +23,7 @@ rustc_macros = { path = "../rustc_macros" } rustc_serialize = { path = "../rustc_serialize" } smallvec = { version = "1.8.1", features = ["const_generics", "union", "may_dangle"] } stable_deref_trait = "1.0.0" -stacker = "0.1.14" +stacker = "0.1.15" tempfile = "3.2" thin-vec = "0.2.9" tracing = "0.1" diff --git a/compiler/rustc_error_messages/locales/en-US/borrowck.ftl b/compiler/rustc_error_messages/locales/en-US/borrowck.ftl index 67f2156f32e50..80fc4c6e4f5d3 100644 --- a/compiler/rustc_error_messages/locales/en-US/borrowck.ftl +++ b/compiler/rustc_error_messages/locales/en-US/borrowck.ftl @@ -58,3 +58,15 @@ borrowck_returned_lifetime_short = borrowck_used_impl_require_static = the used `impl` has a `'static` requirement + +borrowck_capture_kind_label = + capture is {$kind_desc} because of use here + +borrowck_var_borrow_by_use_place_in_generator = + borrow occurs due to use of {$place} in closure in generator + +borrowck_var_borrow_by_use_place_in_closure = + borrow occurs due to use of {$place} in closure + +borrowck_var_borrow_by_use_place = + borrow occurs due to use of {$place} diff --git a/compiler/rustc_error_messages/locales/en-US/infer.ftl b/compiler/rustc_error_messages/locales/en-US/infer.ftl index 18b3408b06ab4..fa975ff2c20cf 100644 --- a/compiler/rustc_error_messages/locales/en-US/infer.ftl +++ b/compiler/rustc_error_messages/locales/en-US/infer.ftl @@ -171,3 +171,4 @@ infer_msl_introduces_static = introduces a `'static` lifetime requirement infer_msl_unmet_req = because this has an unmet lifetime requirement infer_msl_trait_note = this has an implicit `'static` lifetime requirement infer_msl_trait_sugg = consider relaxing the implicit `'static` requirement +infer_suggest_add_let_for_letchains = consider adding `let` diff --git a/compiler/rustc_error_messages/locales/en-US/parser.ftl b/compiler/rustc_error_messages/locales/en-US/parser.ftl index 455ff34f7247f..6d42b23fb3a21 100644 --- a/compiler/rustc_error_messages/locales/en-US/parser.ftl +++ b/compiler/rustc_error_messages/locales/en-US/parser.ftl @@ -125,6 +125,9 @@ parser_if_expression_missing_condition = missing condition for `if` expression parser_expected_expression_found_let = expected expression, found `let` statement +parser_expect_eq_instead_of_eqeq = expected `=`, found `==` + .suggestion = consider using `=` here + parser_expected_else_block = expected `{"{"}`, found {$first_tok} .label = expected an `if` or a block after this `else` .suggestion = add an `if` if this is the condition of a chained `else if` statement diff --git a/compiler/rustc_hir_analysis/src/collect/lifetimes.rs b/compiler/rustc_hir_analysis/src/collect/lifetimes.rs index 3d07f3fbc674d..c64177eea3f83 100644 --- a/compiler/rustc_hir_analysis/src/collect/lifetimes.rs +++ b/compiler/rustc_hir_analysis/src/collect/lifetimes.rs @@ -18,7 +18,7 @@ use rustc_middle::bug; use rustc_middle::hir::map::Map; use rustc_middle::hir::nested_filter; use rustc_middle::middle::resolve_lifetime::*; -use rustc_middle::ty::{self, DefIdTree, TyCtxt}; +use rustc_middle::ty::{self, DefIdTree, TyCtxt, TypeSuperVisitable, TypeVisitor}; use rustc_span::def_id::DefId; use rustc_span::symbol::{sym, Ident}; use rustc_span::Span; @@ -1781,7 +1781,7 @@ fn is_late_bound_map(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<&FxIndexSet< let mut late_bound = FxIndexSet::default(); - let mut constrained_by_input = ConstrainedCollector::default(); + let mut constrained_by_input = ConstrainedCollector { regions: Default::default(), tcx }; for arg_ty in decl.inputs { constrained_by_input.visit_ty(arg_ty); } @@ -1834,12 +1834,65 @@ fn is_late_bound_map(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<&FxIndexSet< debug!(?late_bound); return Some(tcx.arena.alloc(late_bound)); - #[derive(Default)] - struct ConstrainedCollector { + /// Visits a `ty::Ty` collecting information about what generic parameters are constrained. + /// + /// The visitor does not operate on `hir::Ty` so that it can be called on the rhs of a `type Alias<...> = ...;` + /// which may live in a separate crate so there would not be any hir available. Instead we use the `type_of` + /// query to obtain a `ty::Ty` which will be present even in cross crate scenarios. It also naturally + /// handles cycle detection as we go through the query system. + /// + /// This is necessary in the first place for the following case: + /// ``` + /// type Alias<'a, T> = >::Assoc; + /// fn foo<'a>(_: Alias<'a, ()>) -> Alias<'a, ()> { ... } + /// ``` + /// + /// If we conservatively considered `'a` unconstrained then we could break users who had written code before + /// we started correctly handling aliases. If we considered `'a` constrained then it would become late bound + /// causing an error during astconv as the `'a` is not constrained by the input type `<() as Trait<'a>>::Assoc` + /// but appears in the output type `<() as Trait<'a>>::Assoc`. + /// + /// We must therefore "look into" the `Alias` to see whether we should consider `'a` constrained or not. + /// + /// See #100508 #85533 #47511 for additional context + struct ConstrainedCollectorPostAstConv { + arg_is_constrained: Box<[bool]>, + } + + use std::ops::ControlFlow; + use ty::Ty; + impl<'tcx> TypeVisitor<'tcx> for ConstrainedCollectorPostAstConv { + fn visit_ty(&mut self, t: Ty<'tcx>) -> ControlFlow { + match t.kind() { + ty::Param(param_ty) => { + self.arg_is_constrained[param_ty.index as usize] = true; + } + ty::Projection(_) => return ControlFlow::Continue(()), + _ => (), + } + t.super_visit_with(self) + } + + fn visit_const(&mut self, _: ty::Const<'tcx>) -> ControlFlow { + ControlFlow::Continue(()) + } + + fn visit_region(&mut self, r: ty::Region<'tcx>) -> ControlFlow { + debug!("r={:?}", r.kind()); + if let ty::RegionKind::ReEarlyBound(region) = r.kind() { + self.arg_is_constrained[region.index as usize] = true; + } + + ControlFlow::Continue(()) + } + } + + struct ConstrainedCollector<'tcx> { + tcx: TyCtxt<'tcx>, regions: FxHashSet, } - impl<'v> Visitor<'v> for ConstrainedCollector { + impl<'v> Visitor<'v> for ConstrainedCollector<'_> { fn visit_ty(&mut self, ty: &'v hir::Ty<'v>) { match ty.kind { hir::TyKind::Path( @@ -1850,6 +1903,47 @@ fn is_late_bound_map(tcx: TyCtxt<'_>, def_id: LocalDefId) -> Option<&FxIndexSet< // (defined above) } + hir::TyKind::Path(hir::QPath::Resolved( + None, + hir::Path { res: Res::Def(DefKind::TyAlias, alias_def), segments, span }, + )) => { + // See comments on `ConstrainedCollectorPostAstConv` for why this arm does not just consider + // substs to be unconstrained. + let generics = self.tcx.generics_of(alias_def); + let mut walker = ConstrainedCollectorPostAstConv { + arg_is_constrained: vec![false; generics.params.len()].into_boxed_slice(), + }; + walker.visit_ty(self.tcx.type_of(alias_def)); + + match segments.last() { + Some(hir::PathSegment { args: Some(args), .. }) => { + let tcx = self.tcx; + for constrained_arg in + args.args.iter().enumerate().flat_map(|(n, arg)| { + match walker.arg_is_constrained.get(n) { + Some(true) => Some(arg), + Some(false) => None, + None => { + tcx.sess.delay_span_bug( + *span, + format!( + "Incorrect generic arg count for alias {:?}", + alias_def + ), + ); + None + } + } + }) + { + self.visit_generic_arg(constrained_arg); + } + } + Some(_) => (), + None => bug!("Path with no segments or self type"), + } + } + hir::TyKind::Path(hir::QPath::Resolved(None, ref path)) => { // consider only the lifetimes on the final // segment; I am not sure it's even currently diff --git a/compiler/rustc_infer/src/errors/mod.rs b/compiler/rustc_infer/src/errors/mod.rs index bb04e1c49baea..ec4eeb8caa27c 100644 --- a/compiler/rustc_infer/src/errors/mod.rs +++ b/compiler/rustc_infer/src/errors/mod.rs @@ -180,6 +180,18 @@ pub enum SourceKindMultiSuggestion<'a> { }, } +#[derive(Subdiagnostic)] +#[suggestion( + infer_suggest_add_let_for_letchains, + style = "verbose", + applicability = "machine-applicable", + code = "let " +)] +pub(crate) struct SuggAddLetForLetChains { + #[primary_span] + pub span: Span, +} + impl<'a> SourceKindMultiSuggestion<'a> { pub fn new_fully_qualified( span: Span, diff --git a/compiler/rustc_infer/src/infer/error_reporting/mod.rs b/compiler/rustc_infer/src/infer/error_reporting/mod.rs index 3dbc9b9f3f938..4d81de8b0b64f 100644 --- a/compiler/rustc_infer/src/infer/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/infer/error_reporting/mod.rs @@ -1,3 +1,4 @@ +// ignore-tidy-filelength //! Error Reporting Code for the inference engine //! //! Because of the way inference, and in particular region inference, @@ -58,12 +59,15 @@ use crate::traits::{ StatementAsExpression, }; +use crate::errors::SuggAddLetForLetChains; +use hir::intravisit::{walk_expr, walk_stmt}; use rustc_data_structures::fx::{FxIndexMap, FxIndexSet}; use rustc_errors::{pluralize, struct_span_err, Diagnostic, ErrorGuaranteed, IntoDiagnosticArg}; use rustc_errors::{Applicability, DiagnosticBuilder, DiagnosticStyledString, MultiSpan}; use rustc_hir as hir; use rustc_hir::def::DefKind; use rustc_hir::def_id::{DefId, LocalDefId}; +use rustc_hir::intravisit::Visitor; use rustc_hir::lang_items::LangItem; use rustc_hir::Node; use rustc_middle::dep_graph::DepContext; @@ -2333,6 +2337,11 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { } } } + // For code `if Some(..) = expr `, the type mismatch may be expected `bool` but found `()`, + // we try to suggest to add the missing `let` for `if let Some(..) = expr` + (ty::Bool, ty::Tuple(list)) => if list.len() == 0 { + self.suggest_let_for_letchains(&mut err, &trace.cause, span); + } _ => {} } } @@ -2357,6 +2366,67 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> { diag } + /// Try to find code with pattern `if Some(..) = expr` + /// use a `visitor` to mark the `if` which its span contains given error span, + /// and then try to find a assignment in the `cond` part, which span is equal with error span + fn suggest_let_for_letchains( + &self, + err: &mut Diagnostic, + cause: &ObligationCause<'_>, + span: Span, + ) { + let hir = self.tcx.hir(); + let fn_hir_id = hir.get_parent_node(cause.body_id); + if let Some(node) = self.tcx.hir().find(fn_hir_id) && + let hir::Node::Item(hir::Item { + kind: hir::ItemKind::Fn(_sig, _, body_id), .. + }) = node { + let body = hir.body(*body_id); + + /// Find the if expression with given span + struct IfVisitor { + pub result: bool, + pub found_if: bool, + pub err_span: Span, + } + + impl<'v> Visitor<'v> for IfVisitor { + fn visit_expr(&mut self, ex: &'v hir::Expr<'v>) { + if self.result { return; } + match ex.kind { + hir::ExprKind::If(cond, _, _) => { + self.found_if = true; + walk_expr(self, cond); + self.found_if = false; + } + _ => walk_expr(self, ex), + } + } + + fn visit_stmt(&mut self, ex: &'v hir::Stmt<'v>) { + if let hir::StmtKind::Local(hir::Local { + span, pat: hir::Pat{..}, ty: None, init: Some(_), .. + }) = &ex.kind + && self.found_if + && span.eq(&self.err_span) { + self.result = true; + } + walk_stmt(self, ex); + } + + fn visit_body(&mut self, body: &'v hir::Body<'v>) { + hir::intravisit::walk_body(self, body); + } + } + + let mut visitor = IfVisitor { err_span: span, found_if: false, result: false }; + visitor.visit_body(&body); + if visitor.result { + err.subdiagnostic(SuggAddLetForLetChains{span: span.shrink_to_lo()}); + } + } + } + fn emit_tuple_wrap_err( &self, err: &mut Diagnostic, diff --git a/compiler/rustc_parse/src/errors.rs b/compiler/rustc_parse/src/errors.rs index 0924c8537159c..e3acc11811f42 100644 --- a/compiler/rustc_parse/src/errors.rs +++ b/compiler/rustc_parse/src/errors.rs @@ -420,6 +420,15 @@ pub(crate) struct ExpectedExpressionFoundLet { pub span: Span, } +#[derive(Diagnostic)] +#[diag(parser_expect_eq_instead_of_eqeq)] +pub(crate) struct ExpectedEqForLetExpr { + #[primary_span] + pub span: Span, + #[suggestion(applicability = "maybe-incorrect", code = "=", style = "verbose")] + pub sugg_span: Span, +} + #[derive(Diagnostic)] #[diag(parser_expected_else_block)] pub(crate) struct ExpectedElseBlock { diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index 4a1162b959983..565371668a8cd 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -9,9 +9,9 @@ use crate::errors::{ ArrayBracketsInsteadOfSpaces, ArrayBracketsInsteadOfSpacesSugg, AsyncMoveOrderIncorrect, BinaryFloatLiteralNotSupported, BracesForStructLiteral, CatchAfterTry, CommaAfterBaseStruct, ComparisonInterpretedAsGeneric, ComparisonOrShiftInterpretedAsGenericSugg, - DoCatchSyntaxRemoved, DotDotDot, EqFieldInit, ExpectedElseBlock, ExpectedExpressionFoundLet, - FieldExpressionWithGeneric, FloatLiteralRequiresIntegerPart, FoundExprWouldBeStmt, - HexadecimalFloatLiteralNotSupported, IfExpressionMissingCondition, + DoCatchSyntaxRemoved, DotDotDot, EqFieldInit, ExpectedElseBlock, ExpectedEqForLetExpr, + ExpectedExpressionFoundLet, FieldExpressionWithGeneric, FloatLiteralRequiresIntegerPart, + FoundExprWouldBeStmt, HexadecimalFloatLiteralNotSupported, IfExpressionMissingCondition, IfExpressionMissingThenBlock, IfExpressionMissingThenBlockSub, IntLiteralTooLarge, InvalidBlockMacroSegment, InvalidComparisonOperator, InvalidComparisonOperatorSub, InvalidFloatLiteralSuffix, InvalidFloatLiteralWidth, InvalidIntLiteralWidth, @@ -2334,7 +2334,15 @@ impl<'a> Parser<'a> { RecoverColon::Yes, CommaRecoveryMode::LikelyTuple, )?; - self.expect(&token::Eq)?; + if self.token == token::EqEq { + self.sess.emit_err(ExpectedEqForLetExpr { + span: self.token.span, + sugg_span: self.token.span, + }); + self.bump(); + } else { + self.expect(&token::Eq)?; + } let expr = self.with_res(self.restrictions | Restrictions::NO_STRUCT_LITERAL, |this| { this.parse_assoc_expr_with(1 + prec_let_scrutinee_needs_par(), None.into()) })?; diff --git a/compiler/rustc_span/src/source_map.rs b/compiler/rustc_span/src/source_map.rs index f9566eeee9465..3baa2e03cbad7 100644 --- a/compiler/rustc_span/src/source_map.rs +++ b/compiler/rustc_span/src/source_map.rs @@ -855,7 +855,8 @@ impl SourceMap { /// Returns a new span representing the next character after the end-point of this span. /// Special cases: /// - if span is a dummy one, returns the same span - /// - if next_point reached the end of source, return span with lo = hi + /// - if next_point reached the end of source, return a span exceeding the end of source, + /// which means sm.span_to_snippet(next_point) will get `Err` /// - respect multi-byte characters pub fn next_point(&self, sp: Span) -> Span { if sp.is_dummy() { @@ -864,9 +865,6 @@ impl SourceMap { let start_of_next_point = sp.hi().0; let width = self.find_width_of_character_at_span(sp, true); - if width == 0 { - return Span::new(sp.hi(), sp.hi(), sp.ctxt(), None); - } // If the width is 1, then the next span should only contain the next char besides current ending. // However, in the case of a multibyte character, where the width != 1, the next span should // span multiple bytes to include the whole character. @@ -938,7 +936,7 @@ impl SourceMap { // Ensure indexes are also not malformed. if start_index > end_index || end_index > source_len - 1 { debug!("find_width_of_character_at_span: source indexes are malformed"); - return 0; + return 1; } let src = local_begin.sf.external_src.borrow(); diff --git a/compiler/rustc_span/src/source_map/tests.rs b/compiler/rustc_span/src/source_map/tests.rs index 1fd81018fa05c..3cab59e8dbe6c 100644 --- a/compiler/rustc_span/src/source_map/tests.rs +++ b/compiler/rustc_span/src/source_map/tests.rs @@ -511,16 +511,17 @@ fn test_next_point() { assert_eq!(span.lo().0, 4); assert_eq!(span.hi().0, 5); - // A non-empty span at the last byte should advance to create an empty - // span pointing at the end of the file. + // Reaching to the end of file, return a span that will get error with `span_to_snippet` let span = Span::with_root_ctxt(BytePos(4), BytePos(5)); let span = sm.next_point(span); assert_eq!(span.lo().0, 5); - assert_eq!(span.hi().0, 5); + assert_eq!(span.hi().0, 6); + assert!(sm.span_to_snippet(span).is_err()); - // Empty span pointing just past the last byte. + // Reaching to the end of file, return a span that will get error with `span_to_snippet` let span = Span::with_root_ctxt(BytePos(5), BytePos(5)); let span = sm.next_point(span); assert_eq!(span.lo().0, 5); - assert_eq!(span.hi().0, 5); + assert_eq!(span.hi().0, 6); + assert!(sm.span_to_snippet(span).is_err()); } diff --git a/src/bootstrap/Cargo.lock b/src/bootstrap/Cargo.lock index baecca44cd987..e1a108cea9574 100644 --- a/src/bootstrap/Cargo.lock +++ b/src/bootstrap/Cargo.lock @@ -224,13 +224,13 @@ dependencies = [ [[package]] name = "fd-lock" -version = "3.0.6" +version = "3.0.7" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e11dcc7e4d79a8c89b9ab4c6f5c30b1fc4a83c420792da3542fd31179ed5f517" +checksum = "0c93a581058d957dc4176875aad04f82f81613e6611d64aa1a9c755bdfb16711" dependencies = [ "cfg-if", "rustix", - "windows-sys", + "windows-sys 0.42.0", ] [[package]] @@ -528,7 +528,7 @@ dependencies = [ "io-lifetimes", "libc", "linux-raw-sys", - "windows-sys", + "windows-sys 0.36.1", ] [[package]] @@ -721,43 +721,100 @@ version = "0.36.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2" dependencies = [ - "windows_aarch64_msvc", - "windows_i686_gnu", - "windows_i686_msvc", - "windows_x86_64_gnu", - "windows_x86_64_msvc", + "windows_aarch64_msvc 0.36.1", + "windows_i686_gnu 0.36.1", + "windows_i686_msvc 0.36.1", + "windows_x86_64_gnu 0.36.1", + "windows_x86_64_msvc 0.36.1", ] +[[package]] +name = "windows-sys" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "5a3e1820f08b8513f676f7ab6c1f99ff312fb97b553d30ff4dd86f9f15728aa7" +dependencies = [ + "windows_aarch64_gnullvm", + "windows_aarch64_msvc 0.42.0", + "windows_i686_gnu 0.42.0", + "windows_i686_msvc 0.42.0", + "windows_x86_64_gnu 0.42.0", + "windows_x86_64_gnullvm", + "windows_x86_64_msvc 0.42.0", +] + +[[package]] +name = "windows_aarch64_gnullvm" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "41d2aa71f6f0cbe00ae5167d90ef3cfe66527d6f613ca78ac8024c3ccab9a19e" + [[package]] name = "windows_aarch64_msvc" version = "0.36.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47" +[[package]] +name = "windows_aarch64_msvc" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dd0f252f5a35cac83d6311b2e795981f5ee6e67eb1f9a7f64eb4500fbc4dcdb4" + [[package]] name = "windows_i686_gnu" version = "0.36.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6" +[[package]] +name = "windows_i686_gnu" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "fbeae19f6716841636c28d695375df17562ca208b2b7d0dc47635a50ae6c5de7" + [[package]] name = "windows_i686_msvc" version = "0.36.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024" +[[package]] +name = "windows_i686_msvc" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "84c12f65daa39dd2babe6e442988fc329d6243fdce47d7d2d155b8d874862246" + [[package]] name = "windows_x86_64_gnu" version = "0.36.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1" +[[package]] +name = "windows_x86_64_gnu" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "bf7b1b21b5362cbc318f686150e5bcea75ecedc74dd157d874d754a2ca44b0ed" + +[[package]] +name = "windows_x86_64_gnullvm" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "09d525d2ba30eeb3297665bd434a54297e4170c7f1a44cad4ef58095b4cd2028" + [[package]] name = "windows_x86_64_msvc" version = "0.36.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680" +[[package]] +name = "windows_x86_64_msvc" +version = "0.42.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "f40009d85759725a34da6d89a94e63d7bdc50a862acf0dbc7c8e488f1edcb6f5" + [[package]] name = "xattr" version = "0.2.3" diff --git a/src/bootstrap/Cargo.toml b/src/bootstrap/Cargo.toml index 95e711737738a..f74738437ea3a 100644 --- a/src/bootstrap/Cargo.toml +++ b/src/bootstrap/Cargo.toml @@ -36,7 +36,7 @@ test = false [dependencies] cmake = "0.1.38" -fd-lock = "3.0.6" +fd-lock = "3.0.7" filetime = "0.2" getopts = "0.2.19" cc = "1.0.69" diff --git a/src/librustdoc/html/static/css/rustdoc.css b/src/librustdoc/html/static/css/rustdoc.css index a38c0e42ab455..9921d09d414bb 100644 --- a/src/librustdoc/html/static/css/rustdoc.css +++ b/src/librustdoc/html/static/css/rustdoc.css @@ -830,6 +830,9 @@ table, line-height: 1.5; font-weight: 500; } +#crate-search:hover, #crate-search:focus { + border-color: var(--crate-search-hover-border); +} /* cancel stylistic differences in padding in firefox for "appearance: none"-style (or equivalent) ` isn't bigger than its container (".search-results-title"). assert-css: ("#search", {"width": "640px"}) + +// Now checking that the crate filter is working as expected too. +show-text: true +define-function: ( + "check-filter", + (theme, border, filter, hover_border, hover_filter), + [ + ("local-storage", {"rustdoc-theme": |theme|, "rustdoc-use-system-theme": "false"}), + ("reload"), + ("wait-for", "#crate-search"), + ("assert-css", ("#crate-search", {"border": "1px solid " + |border|})), + ("assert-css", ("#crate-search-div::after", {"filter": |filter|})), + ("move-cursor-to", "#crate-search"), + ("assert-css", ("#crate-search", {"border": "1px solid " + |hover_border|})), + ("assert-css", ("#crate-search-div::after", {"filter": |hover_filter|})), + ("move-cursor-to", ".search-input"), + ], +) + +call-function: ("check-filter", { + "theme": "ayu", + "border": "rgb(92, 103, 115)", + "filter": "invert(0.41) sepia(0.12) saturate(4.87) hue-rotate(171deg) brightness(0.94) contrast(0.94)", + "hover_border": "rgb(224, 224, 224)", + "hover_filter": "invert(0.98) sepia(0.12) saturate(0.81) hue-rotate(343deg) brightness(1.13) contrast(0.76)", +}) +call-function: ("check-filter", { + "theme": "dark", + "border": "rgb(224, 224, 224)", + "filter": "invert(0.94) sepia(0) saturate(7.21) hue-rotate(255deg) brightness(0.9) contrast(0.9)", + "hover_border": "rgb(33, 150, 243)", + "hover_filter": "invert(0.69) sepia(0.6) saturate(66.13) hue-rotate(184deg) brightness(1) contrast(0.91)", +}) +call-function: ("check-filter", { + "theme": "light", + "border": "rgb(224, 224, 224)", + "filter": "invert(1) sepia(0) saturate(42.23) hue-rotate(289deg) brightness(1.14) contrast(0.76)", + "hover_border": "rgb(113, 113, 113)", + "hover_filter": "invert(0.44) sepia(0.18) saturate(0.23) hue-rotate(317deg) brightness(0.96) contrast(0.93)", +}) diff --git a/src/test/ui/did_you_mean/issue-103909.stderr b/src/test/ui/did_you_mean/issue-103909.stderr index a28914051b980..8641017470ba0 100644 --- a/src/test/ui/did_you_mean/issue-103909.stderr +++ b/src/test/ui/did_you_mean/issue-103909.stderr @@ -14,6 +14,11 @@ error[E0308]: mismatched types | LL | if Err(err) = File::open("hello.txt") { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `bool`, found `()` + | +help: consider adding `let` + | +LL | if let Err(err) = File::open("hello.txt") { + | +++ error: aborting due to 2 previous errors diff --git a/src/test/ui/inference/issue-103587.rs b/src/test/ui/inference/issue-103587.rs new file mode 100644 index 0000000000000..11536f9f4cc48 --- /dev/null +++ b/src/test/ui/inference/issue-103587.rs @@ -0,0 +1,12 @@ +fn main() { + let x = Some(123); + + if let Some(_) == x {} + //~^ ERROR expected `=`, found `==` + + if Some(_) = x {} + //~^ ERROR mismatched types + + if None = x { } + //~^ ERROR mismatched types +} diff --git a/src/test/ui/inference/issue-103587.stderr b/src/test/ui/inference/issue-103587.stderr new file mode 100644 index 0000000000000..b373fbfbb948c --- /dev/null +++ b/src/test/ui/inference/issue-103587.stderr @@ -0,0 +1,40 @@ +error: expected `=`, found `==` + --> $DIR/issue-103587.rs:4:20 + | +LL | if let Some(_) == x {} + | ^^ + | +help: consider using `=` here + | +LL | if let Some(_) = x {} + | ~ + +error[E0308]: mismatched types + --> $DIR/issue-103587.rs:7:8 + | +LL | if Some(_) = x {} + | ^^^^^^^^^^^ expected `bool`, found `()` + | +help: consider adding `let` + | +LL | if let Some(_) = x {} + | +++ + +error[E0308]: mismatched types + --> $DIR/issue-103587.rs:10:8 + | +LL | if None = x { } + | ^^^^^^^^ expected `bool`, found `()` + | +help: you might have meant to use pattern matching + | +LL | if let None = x { } + | +++ +help: you might have meant to compare for equality + | +LL | if None == x { } + | + + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/src/test/ui/issues/issue-47511.stderr b/src/test/ui/issues/issue-47511.stderr deleted file mode 100644 index 9998ee0e8d0c6..0000000000000 --- a/src/test/ui/issues/issue-47511.stderr +++ /dev/null @@ -1,18 +0,0 @@ -error[E0581]: return type references an anonymous lifetime, which is not constrained by the fn input types - --> $DIR/issue-47511.rs:8:15 - | -LL | fn f(_: X) -> X { - | ^ - | - = note: lifetimes appearing in an associated or opaque type are not considered constrained - = note: consider introducing a named lifetime parameter - -error[E0581]: return type references lifetime `'a`, which is not constrained by the fn input types - --> $DIR/issue-47511.rs:12:23 - | -LL | fn g<'a>(_: X<'a>) -> X<'a> { - | ^^^^^ - -error: aborting due to 2 previous errors - -For more information about this error, try `rustc --explain E0581`. diff --git a/src/test/ui/late-bound-lifetimes/auxiliary/upstream_alias.rs b/src/test/ui/late-bound-lifetimes/auxiliary/upstream_alias.rs new file mode 100644 index 0000000000000..5b9dc0e43087c --- /dev/null +++ b/src/test/ui/late-bound-lifetimes/auxiliary/upstream_alias.rs @@ -0,0 +1,5 @@ +pub trait Trait<'a> { + type Assoc; +} + +pub type Alias<'a, T> = >::Assoc; diff --git a/src/test/ui/late-bound-lifetimes/cross_crate_alias.rs b/src/test/ui/late-bound-lifetimes/cross_crate_alias.rs new file mode 100644 index 0000000000000..4154c27924323 --- /dev/null +++ b/src/test/ui/late-bound-lifetimes/cross_crate_alias.rs @@ -0,0 +1,10 @@ +// aux-build:upstream_alias.rs +// check-pass + +extern crate upstream_alias; + +fn foo<'a, T: for<'b> upstream_alias::Trait<'b>>(_: upstream_alias::Alias<'a, T>) -> &'a () { + todo!() +} + +fn main() {} diff --git a/src/test/ui/late-bound-lifetimes/downgraded_to_early_through_alias.rs b/src/test/ui/late-bound-lifetimes/downgraded_to_early_through_alias.rs new file mode 100644 index 0000000000000..e56a34218e231 --- /dev/null +++ b/src/test/ui/late-bound-lifetimes/downgraded_to_early_through_alias.rs @@ -0,0 +1,24 @@ +// check-pass + +trait Gats<'a> { + type Assoc; + type Assoc2; +} + +trait Trait: for<'a> Gats<'a> { + fn foo<'a>(_: &mut >::Assoc) -> >::Assoc2; +} + +impl<'a> Gats<'a> for () { + type Assoc = &'a u32; + type Assoc2 = (); +} + +type GatsAssoc<'a, T> = >::Assoc; +type GatsAssoc2<'a, T> = >::Assoc2; + +impl Trait for () { + fn foo<'a>(_: &mut GatsAssoc<'a, Self>) -> GatsAssoc2<'a, Self> {} +} + +fn main() {} diff --git a/src/test/ui/issues/issue-47511.rs b/src/test/ui/late-bound-lifetimes/issue-47511.rs similarity index 52% rename from src/test/ui/issues/issue-47511.rs rename to src/test/ui/late-bound-lifetimes/issue-47511.rs index eb4860e75d758..7894435154082 100644 --- a/src/test/ui/issues/issue-47511.rs +++ b/src/test/ui/late-bound-lifetimes/issue-47511.rs @@ -1,9 +1,4 @@ -// check-fail -// known-bug: #47511 - -// Regression test for #47511: anonymous lifetimes can appear -// unconstrained in a return type, but only if they appear just once -// in the input, as the input to a projection. +// check-pass fn f(_: X) -> X { unimplemented!() diff --git a/src/test/ui/late-bound-lifetimes/late_bound_through_alias.rs b/src/test/ui/late-bound-lifetimes/late_bound_through_alias.rs new file mode 100644 index 0000000000000..91839673c1f7a --- /dev/null +++ b/src/test/ui/late-bound-lifetimes/late_bound_through_alias.rs @@ -0,0 +1,16 @@ +// check-pass + +fn f(_: X) -> X { + unimplemented!() +} + +fn g<'a>(_: X<'a>) -> X<'a> { + unimplemented!() +} + +type X<'a> = &'a (); + +fn main() { + let _: for<'a> fn(X<'a>) -> X<'a> = g; + let _: for<'a> fn(X<'a>) -> X<'a> = f; +} diff --git a/src/test/ui/late-bound-lifetimes/mismatched_arg_count.rs b/src/test/ui/late-bound-lifetimes/mismatched_arg_count.rs new file mode 100644 index 0000000000000..0b331e2039f25 --- /dev/null +++ b/src/test/ui/late-bound-lifetimes/mismatched_arg_count.rs @@ -0,0 +1,12 @@ +// ensures that we don't ICE when there are too many args supplied to the alias. + +trait Trait<'a> { + type Assoc; +} + +type Alias<'a, T> = >::Assoc; + +fn bar<'a, T: Trait<'a>>(_: Alias<'a, 'a, T>) {} +//~^ error: this type alias takes 1 lifetime argument but 2 lifetime arguments were supplied + +fn main() {} diff --git a/src/test/ui/late-bound-lifetimes/mismatched_arg_count.stderr b/src/test/ui/late-bound-lifetimes/mismatched_arg_count.stderr new file mode 100644 index 0000000000000..3704d9bb957ed --- /dev/null +++ b/src/test/ui/late-bound-lifetimes/mismatched_arg_count.stderr @@ -0,0 +1,17 @@ +error[E0107]: this type alias takes 1 lifetime argument but 2 lifetime arguments were supplied + --> $DIR/mismatched_arg_count.rs:9:29 + | +LL | fn bar<'a, T: Trait<'a>>(_: Alias<'a, 'a, T>) {} + | ^^^^^ -- help: remove this lifetime argument + | | + | expected 1 lifetime argument + | +note: type alias defined here, with 1 lifetime parameter: `'a` + --> $DIR/mismatched_arg_count.rs:7:6 + | +LL | type Alias<'a, T> = >::Assoc; + | ^^^^^ -- + +error: aborting due to previous error + +For more information about this error, try `rustc --explain E0107`. diff --git a/src/test/ui/parser/issue-103451.rs b/src/test/ui/parser/issue-103451.rs new file mode 100644 index 0000000000000..1fdb001488155 --- /dev/null +++ b/src/test/ui/parser/issue-103451.rs @@ -0,0 +1,5 @@ +// error-pattern: this file contains an unclosed delimiter +// error-pattern: expected value, found struct `R` +struct R { } +struct S { + x: [u8; R diff --git a/src/test/ui/parser/issue-103451.stderr b/src/test/ui/parser/issue-103451.stderr new file mode 100644 index 0000000000000..eb3c92fb43d9b --- /dev/null +++ b/src/test/ui/parser/issue-103451.stderr @@ -0,0 +1,32 @@ +error: this file contains an unclosed delimiter + --> $DIR/issue-103451.rs:5:15 + | +LL | struct S { + | - unclosed delimiter +LL | x: [u8; R + | - ^ + | | + | unclosed delimiter + +error: this file contains an unclosed delimiter + --> $DIR/issue-103451.rs:5:15 + | +LL | struct S { + | - unclosed delimiter +LL | x: [u8; R + | - ^ + | | + | unclosed delimiter + +error[E0423]: expected value, found struct `R` + --> $DIR/issue-103451.rs:5:13 + | +LL | struct R { } + | ------------ `R` defined here +LL | struct S { +LL | x: [u8; R + | ^ help: use struct literal syntax instead: `R {}` + +error: aborting due to 3 previous errors + +For more information about this error, try `rustc --explain E0423`. diff --git a/src/test/ui/suggestions/if-let-typo.stderr b/src/test/ui/suggestions/if-let-typo.stderr index 3d9ac40ec367b..02148b7f7adfd 100644 --- a/src/test/ui/suggestions/if-let-typo.stderr +++ b/src/test/ui/suggestions/if-let-typo.stderr @@ -25,12 +25,22 @@ error[E0308]: mismatched types | LL | if Some(x) = foo {} | ^^^^^^^^^^^^^ expected `bool`, found `()` + | +help: consider adding `let` + | +LL | if let Some(x) = foo {} + | +++ error[E0308]: mismatched types --> $DIR/if-let-typo.rs:6:8 | LL | if Some(foo) = bar {} | ^^^^^^^^^^^^^^^ expected `bool`, found `()` + | +help: consider adding `let` + | +LL | if let Some(foo) = bar {} + | +++ error[E0308]: mismatched types --> $DIR/if-let-typo.rs:7:8 @@ -51,6 +61,11 @@ error[E0308]: mismatched types | LL | if Some(3) = foo {} | ^^^^^^^^^^^^^ expected `bool`, found `()` + | +help: consider adding `let` + | +LL | if let Some(3) = foo {} + | +++ error: aborting due to 7 previous errors diff --git a/src/tools/linkchecker/main.rs b/src/tools/linkchecker/main.rs index 7842611bd4ffa..4170c32f1fe25 100644 --- a/src/tools/linkchecker/main.rs +++ b/src/tools/linkchecker/main.rs @@ -55,30 +55,6 @@ const LINKCHECK_EXCEPTIONS: &[(&str, &[&str])] = &[ #[rustfmt::skip] const INTRA_DOC_LINK_EXCEPTIONS: &[(&str, &[&str])] = &[ - // This will never have links that are not in other pages. - // To avoid repeating the exceptions twice, an empty list means all broken links are allowed. - ("reference/print.html", &[]), - // All the reference 'links' are actually ENBF highlighted as code - ("reference/comments.html", &[ - "/ !", - "* !", - ]), - ("reference/identifiers.html", &[ - "a-z A-Z", - "a-z A-Z 0-9 _", - "a-z A-Z] [a-z A-Z 0-9 _", - ]), - ("reference/tokens.html", &[ - "0-1", - "0-7", - "0-9", - "0-9", - "0-9 a-f A-F", - ]), - ("reference/notation.html", &[ - "b B", - "a-z", - ]), // This is being used in the sense of 'inclusive range', not a markdown link ("core/ops/struct.RangeInclusive.html", &["begin, end"]), ("std/ops/struct.RangeInclusive.html", &["begin, end"]), @@ -365,6 +341,33 @@ impl Checker { } }); + self.check_intra_doc_links(file, &pretty_path, &source, report); + + // we don't need the source anymore, + // so drop to reduce memory-usage + match self.cache.get_mut(&pretty_path).unwrap() { + FileEntry::HtmlFile { source, .. } => *source = Rc::new(String::new()), + _ => unreachable!("must be html file"), + } + } + + fn check_intra_doc_links( + &mut self, + file: &Path, + pretty_path: &str, + source: &str, + report: &mut Report, + ) { + let relative = file.strip_prefix(&self.root).expect("should always be relative to root"); + // Don't check the reference. It has several legitimate things that + // look like […]. The reference has its own broken link + // checker in its CI which handles this using pulldown_cmark. + // + // This checks both the end of the root (when checking just the + // reference directory) or the beginning (when checking all docs). + if self.root.ends_with("reference") || relative.starts_with("reference") { + return; + } // Search for intra-doc links that rustdoc didn't warn about // FIXME(#77199, 77200) Rustdoc should just warn about these directly. // NOTE: only looks at one line at a time; in practice this should find most links @@ -379,12 +382,6 @@ impl Checker { } } } - // we don't need the source anymore, - // so drop to reduce memory-usage - match self.cache.get_mut(&pretty_path).unwrap() { - FileEntry::HtmlFile { source, .. } => *source = Rc::new(String::new()), - _ => unreachable!("must be html file"), - } } /// Load a file from disk, or from the cache if available.