Auto merge of #119569 - matthiaskrgr:rollup-4packja, r=matthiaskrgr

Rollup of 10 pull requests

Successful merges:

 - #118521 (Enable address sanitizer for MSVC targets using INFERASANLIBS linker flag)
 - #119026 (std::net::bind using -1 for openbsd which in turn sets it to somaxconn.)
 - #119195 (Make named_asm_labels lint not trigger on unicode and trigger on format args)
 - #119204 (macro_rules: Less hacky heuristic for using `tt` metavariable spans)
 - #119362 (Make `derive(Trait)` suggestion more accurate)
 - #119397 (Recover parentheses in range patterns)
 - #119417 (Uplift some miscellaneous coroutine-specific machinery into `check_closure`)
 - #119539 (Fix typos)
 - #119540 (Don't synthesize host effect args inside trait object types)
 - #119555 (Add codegen test for RVO on MaybeUninit)

r? `@ghost`
`@rustbot` modify labels: rollup

compiler/rustc_ast/src/tokenstream.rs

@@ -26,7 +26,7 @@ use rustc_span::{sym, Span, Symbol, DUMMY_SP};
 use smallvec::{smallvec, SmallVec};
 
 use std::borrow::Cow;
-use std::{cmp, fmt, iter, mem};
+use std::{cmp, fmt, iter};
 
 /// When the main Rust parser encounters a syntax-extension invocation, it
 /// parses the arguments to the invocation as a token tree. This is a very
@@ -81,14 +81,6 @@ impl TokenTree {
         }
     }
 
-    /// Modify the `TokenTree`'s span in-place.
-    pub fn set_span(&mut self, span: Span) {
-        match self {
-            TokenTree::Token(token, _) => token.span = span,
-            TokenTree::Delimited(dspan, ..) => *dspan = DelimSpan::from_single(span),
-        }
-    }
-
     /// Create a `TokenTree::Token` with alone spacing.
     pub fn token_alone(kind: TokenKind, span: Span) -> TokenTree {
         TokenTree::Token(Token::new(kind, span), Spacing::Alone)
@@ -461,19 +453,6 @@ impl TokenStream {
         t1.next().is_none() && t2.next().is_none()
     }
 
-    /// Applies the supplied function to each `TokenTree` and its index in `self`, returning a new `TokenStream`
-    ///
-    /// It is equivalent to `TokenStream::new(self.trees().cloned().enumerate().map(|(i, tt)| f(i, tt)).collect())`.
-    pub fn map_enumerated_owned(
-        mut self,
-        mut f: impl FnMut(usize, TokenTree) -> TokenTree,
-    ) -> TokenStream {
-        let owned = Lrc::make_mut(&mut self.0); // clone if necessary
-        // rely on vec's in-place optimizations to avoid another allocation
-        *owned = mem::take(owned).into_iter().enumerate().map(|(i, tree)| f(i, tree)).collect();
-        self
-    }
-
     /// Create a token stream containing a single token with alone spacing. The
     /// spacing used for the final token in a constructed stream doesn't matter
     /// because it's never used. In practice we arbitrarily use

compiler/rustc_ast_lowering/src/lib.rs

@@ -1434,19 +1434,21 @@ impl<'a, 'hir> LoweringContext<'a, 'hir> {
                 let (bounds, lifetime_bound) = self.with_dyn_type_scope(true, |this| {
                     let bounds =
                         this.arena.alloc_from_iter(bounds.iter().filter_map(|bound| match bound {
-                            GenericBound::Trait(
+                            // We can safely ignore constness here since AST validation
-                                ty,
+                            // takes care of rejecting invalid modifier combinations and
-                                TraitBoundModifiers {
+                            // const trait bounds in trait object types.
-                                    polarity: BoundPolarity::Positive | BoundPolarity::Negative(_),
+                            GenericBound::Trait(ty, modifiers) => match modifiers.polarity {
-                                    constness,
+                                BoundPolarity::Positive | BoundPolarity::Negative(_) => {
-                                },
+                                    Some(this.lower_poly_trait_ref(
-                            ) => Some(this.lower_poly_trait_ref(ty, itctx, *constness)),
+                                        ty,
-                            // We can safely ignore constness here, since AST validation
+                                        itctx,
-                            // will take care of invalid modifier combinations.
+                                        // Still, don't pass along the constness here; we don't want to
-                            GenericBound::Trait(
+                                        // synthesize any host effect args, it'd only cause problems.
-                                _,
+                                        ast::BoundConstness::Never,
-                                TraitBoundModifiers { polarity: BoundPolarity::Maybe(_), .. },
+                                    ))
-                            ) => None,
+                                }
+                                BoundPolarity::Maybe(_) => None,
+                            },
                             GenericBound::Outlives(lifetime) => {
                                 if lifetime_bound.is_none() {
                                     lifetime_bound = Some(this.lower_lifetime(lifetime));

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -1186,15 +1186,22 @@ mod win {
     }
 }
 
-fn add_sanitizer_libraries(sess: &Session, crate_type: CrateType, linker: &mut dyn Linker) {
+fn add_sanitizer_libraries(
-    // On macOS the runtimes are distributed as dylibs which should be linked to
+    sess: &Session,
-    // both executables and dynamic shared objects. Everywhere else the runtimes
+    flavor: LinkerFlavor,
-    // are currently distributed as static libraries which should be linked to
+    crate_type: CrateType,
-    // executables only.
+    linker: &mut dyn Linker,
+) {
+    // On macOS and Windows using MSVC the runtimes are distributed as dylibs
+    // which should be linked to both executables and dynamic libraries.
+    // Everywhere else the runtimes are currently distributed as static
+    // libraries which should be linked to executables only.
     let needs_runtime = !sess.target.is_like_android
         && match crate_type {
             CrateType::Executable => true,
-            CrateType::Dylib | CrateType::Cdylib | CrateType::ProcMacro => sess.target.is_like_osx,
+            CrateType::Dylib | CrateType::Cdylib | CrateType::ProcMacro => {
+                sess.target.is_like_osx || sess.target.is_like_msvc
+            }
             CrateType::Rlib | CrateType::Staticlib => false,
         };
 
@@ -1204,26 +1211,31 @@ fn add_sanitizer_libraries(sess: &Session, crate_type: CrateType, linker: &mut d
 
     let sanitizer = sess.opts.unstable_opts.sanitizer;
     if sanitizer.contains(SanitizerSet::ADDRESS) {
-        link_sanitizer_runtime(sess, linker, "asan");
+        link_sanitizer_runtime(sess, flavor, linker, "asan");
     }
     if sanitizer.contains(SanitizerSet::LEAK) {
-        link_sanitizer_runtime(sess, linker, "lsan");
+        link_sanitizer_runtime(sess, flavor, linker, "lsan");
     }
     if sanitizer.contains(SanitizerSet::MEMORY) {
-        link_sanitizer_runtime(sess, linker, "msan");
+        link_sanitizer_runtime(sess, flavor, linker, "msan");
     }
     if sanitizer.contains(SanitizerSet::THREAD) {
-        link_sanitizer_runtime(sess, linker, "tsan");
+        link_sanitizer_runtime(sess, flavor, linker, "tsan");
     }
     if sanitizer.contains(SanitizerSet::HWADDRESS) {
-        link_sanitizer_runtime(sess, linker, "hwasan");
+        link_sanitizer_runtime(sess, flavor, linker, "hwasan");
     }
     if sanitizer.contains(SanitizerSet::SAFESTACK) {
-        link_sanitizer_runtime(sess, linker, "safestack");
+        link_sanitizer_runtime(sess, flavor, linker, "safestack");
     }
 }
 
-fn link_sanitizer_runtime(sess: &Session, linker: &mut dyn Linker, name: &str) {
+fn link_sanitizer_runtime(
+    sess: &Session,
+    flavor: LinkerFlavor,
+    linker: &mut dyn Linker,
+    name: &str,
+) {
     fn find_sanitizer_runtime(sess: &Session, filename: &str) -> PathBuf {
         let session_tlib =
             filesearch::make_target_lib_path(&sess.sysroot, sess.opts.target_triple.triple());
@@ -1254,6 +1266,10 @@ fn link_sanitizer_runtime(sess: &Session, linker: &mut dyn Linker, name: &str) {
         let rpath = path.to_str().expect("non-utf8 component in path");
         linker.args(&["-Wl,-rpath", "-Xlinker", rpath]);
         linker.link_dylib(&filename, false, true);
+    } else if sess.target.is_like_msvc && flavor == LinkerFlavor::Msvc(Lld::No) && name == "asan" {
+        // MSVC provides the `/INFERASANLIBS` argument to automatically find the
+        // compatible ASAN library.
+        linker.arg("/INFERASANLIBS");
     } else {
         let filename = format!("librustc{channel}_rt.{name}.a");
         let path = find_sanitizer_runtime(sess, &filename).join(&filename);
@@ -2076,7 +2092,7 @@ fn linker_with_args<'a>(
     );
 
     // Sanitizer libraries.
-    add_sanitizer_libraries(sess, crate_type, cmd);
+    add_sanitizer_libraries(sess, flavor, crate_type, cmd);
 
     // Object code from the current crate.
     // Take careful note of the ordering of the arguments we pass to the linker

compiler/rustc_errors/src/lib.rs

@@ -1698,7 +1698,7 @@ pub enum Level {
     /// internal overflows, some file operation errors.
     ///
     /// Its `EmissionGuarantee` is `FatalAbort`, except in the non-aborting "almost fatal" case
-    /// that is occasionaly used, where it is `FatalError`.
+    /// that is occasionally used, where it is `FatalError`.
     Fatal,
 
     /// An error in the code being compiled, which prevents compilation from finishing. This is the

compiler/rustc_expand/src/mbe/macro_rules.rs

@@ -10,7 +10,7 @@ use crate::mbe::transcribe::transcribe;
 
 use rustc_ast as ast;
 use rustc_ast::token::{self, Delimiter, NonterminalKind, Token, TokenKind, TokenKind::*};
-use rustc_ast::tokenstream::{DelimSpan, TokenStream, TokenTree};
+use rustc_ast::tokenstream::{DelimSpan, TokenStream};
 use rustc_ast::{NodeId, DUMMY_NODE_ID};
 use rustc_ast_pretty::pprust;
 use rustc_attr::{self as attr, TransparencyError};
@@ -213,7 +213,7 @@ fn expand_macro<'cx>(
             let arm_span = rhses[i].span();
 
             // rhs has holes ( `$id` and `$(...)` that need filled)
-            let mut tts = match transcribe(cx, &named_matches, rhs, rhs_span, transparency) {
+            let tts = match transcribe(cx, &named_matches, rhs, rhs_span, transparency) {
                 Ok(tts) => tts,
                 Err(mut err) => {
                     err.emit();
@@ -221,37 +221,6 @@ fn expand_macro<'cx>(
                 }
             };
 
-            // Replace all the tokens for the corresponding positions in the macro, to maintain
-            // proper positions in error reporting, while maintaining the macro_backtrace.
-            if tts.len() == rhs.tts.len() {
-                tts = tts.map_enumerated_owned(|i, mut tt| {
-                    let rhs_tt = &rhs.tts[i];
-                    let ctxt = tt.span().ctxt();
-                    match (&mut tt, rhs_tt) {
-                        // preserve the delim spans if able
-                        (
-                            TokenTree::Delimited(target_sp, ..),
-                            mbe::TokenTree::Delimited(source_sp, ..),
-                        ) => {
-                            target_sp.open = source_sp.open.with_ctxt(ctxt);
-                            target_sp.close = source_sp.close.with_ctxt(ctxt);
-                        }
-                        (
-                            TokenTree::Delimited(target_sp, ..),
-                            mbe::TokenTree::MetaVar(source_sp, ..),
-                        ) => {
-                            target_sp.open = source_sp.with_ctxt(ctxt);
-                            target_sp.close = source_sp.with_ctxt(ctxt).shrink_to_hi();
-                        }
-                        _ => {
-                            let sp = rhs_tt.span().with_ctxt(ctxt);
-                            tt.set_span(sp);
-                        }
-                    }
-                    tt
-                });
-            }
-
             if cx.trace_macros() {
                 let msg = format!("to `{}`", pprust::tts_to_string(&tts));
                 trace_macros_note(&mut cx.expansions, sp, msg);

compiler/rustc_expand/src/mbe/transcribe.rs

@@ -4,7 +4,7 @@ use crate::errors::{
     NoSyntaxVarsExprRepeat, VarStillRepeating,
 };
 use crate::mbe::macro_parser::{MatchedNonterminal, MatchedSeq, MatchedTokenTree, NamedMatch};
-use crate::mbe::{self, MetaVarExpr};
+use crate::mbe::{self, KleeneOp, MetaVarExpr};
 use rustc_ast::mut_visit::{self, MutVisitor};
 use rustc_ast::token::{self, Delimiter, Token, TokenKind};
 use rustc_ast::tokenstream::{DelimSpacing, DelimSpan, Spacing, TokenStream, TokenTree};
@@ -42,6 +42,7 @@ enum Frame<'a> {
         tts: &'a [mbe::TokenTree],
         idx: usize,
         sep: Option<Token>,
+        kleene_op: KleeneOp,
     },
 }
 
@@ -207,7 +208,7 @@ pub(super) fn transcribe<'a>(
 
                         // Is the repetition empty?
                         if len == 0 {
-                            if seq.kleene.op == mbe::KleeneOp::OneOrMore {
+                            if seq.kleene.op == KleeneOp::OneOrMore {
                                 // FIXME: this really ought to be caught at macro definition
                                 // time... It happens when the Kleene operator in the matcher and
                                 // the body for the same meta-variable do not match.
@@ -227,6 +228,7 @@ pub(super) fn transcribe<'a>(
                                 idx: 0,
                                 sep: seq.separator.clone(),
                                 tts: &delimited.tts,
+                                kleene_op: seq.kleene.op,
                             });
                         }
                     }
@@ -243,7 +245,7 @@ pub(super) fn transcribe<'a>(
                         MatchedTokenTree(tt) => {
                             // `tt`s are emitted into the output stream directly as "raw tokens",
                             // without wrapping them into groups.
-                            result.push(tt.clone());
+                            result.push(maybe_use_metavar_location(cx, &stack, sp, tt));
                         }
                         MatchedNonterminal(nt) => {
                             // Other variables are emitted into the output stream as groups with
@@ -308,6 +310,62 @@ pub(super) fn transcribe<'a>(
     }
 }
 
+/// Usually metavariables `$var` produce interpolated tokens, which have an additional place for
+/// keeping both the original span and the metavariable span. For `tt` metavariables that's not the
+/// case however, and there's no place for keeping a second span. So we try to give the single
+/// produced span a location that would be most useful in practice (the hygiene part of the span
+/// must not be changed).
+///
+/// Different locations are useful for different purposes:
+/// - The original location is useful when we need to report a diagnostic for the original token in
+///   isolation, without combining it with any surrounding tokens. This case occurs, but it is not
+///   very common in practice.
+/// - The metavariable location is useful when we need to somehow combine the token span with spans
+///   of its surrounding tokens. This is the most common way to use token spans.
+///
+/// So this function replaces the original location with the metavariable location in all cases
+/// except these two:
+/// - The metavariable is an element of undelimited sequence `$($tt)*`.
+///   These are typically used for passing larger amounts of code, and tokens in that code usually
+///   combine with each other and not with tokens outside of the sequence.
+/// - The metavariable span comes from a different crate, then we prefer the more local span.
+///
+/// FIXME: Find a way to keep both original and metavariable spans for all tokens without
+/// regressing compilation time too much. Several experiments for adding such spans were made in
+/// the past (PR #95580, #118517, #118671) and all showed some regressions.
+fn maybe_use_metavar_location(
+    cx: &ExtCtxt<'_>,
+    stack: &[Frame<'_>],
+    metavar_span: Span,
+    orig_tt: &TokenTree,
+) -> TokenTree {
+    let undelimited_seq = matches!(
+        stack.last(),
+        Some(Frame::Sequence {
+            tts: [_],
+            sep: None,
+            kleene_op: KleeneOp::ZeroOrMore | KleeneOp::OneOrMore,
+            ..
+        })
+    );
+    if undelimited_seq || cx.source_map().is_imported(metavar_span) {
+        return orig_tt.clone();
+    }
+
+    match orig_tt {
+        TokenTree::Token(Token { kind, span }, spacing) => {
+            let span = metavar_span.with_ctxt(span.ctxt());
+            TokenTree::Token(Token { kind: kind.clone(), span }, *spacing)
+        }
+        TokenTree::Delimited(dspan, dspacing, delimiter, tts) => {
+            let open = metavar_span.shrink_to_lo().with_ctxt(dspan.open.ctxt());
+            let close = metavar_span.shrink_to_hi().with_ctxt(dspan.close.ctxt());
+            let dspan = DelimSpan::from_pair(open, close);
+            TokenTree::Delimited(dspan, *dspacing, *delimiter, tts.clone())
+        }
+    }
+}
+
 /// Lookup the meta-var named `ident` and return the matched token tree from the invocation using
 /// the set of matches `interpolations`.
 ///

compiler/rustc_hir_typeck/src/check.rs

@@ -28,10 +28,10 @@ use rustc_trait_selection::traits::{ObligationCause, ObligationCauseCode};
 pub(super) fn check_fn<'a, 'tcx>(
     fcx: &mut FnCtxt<'a, 'tcx>,
     fn_sig: ty::FnSig<'tcx>,
+    coroutine_types: Option<CoroutineTypes<'tcx>>,
     decl: &'tcx hir::FnDecl<'tcx>,
     fn_def_id: LocalDefId,
     body: &'tcx hir::Body<'tcx>,
-    closure_kind: Option<hir::ClosureKind>,
     params_can_be_unsized: bool,
 ) -> Option<CoroutineTypes<'tcx>> {
     let fn_id = fcx.tcx.local_def_id_to_hir_id(fn_def_id);
@@ -49,54 +49,13 @@ pub(super) fn check_fn<'a, 'tcx>(
             fcx.param_env,
         ));
 
+    fcx.coroutine_types = coroutine_types;
     fcx.ret_coercion = Some(RefCell::new(CoerceMany::new(ret_ty)));
 
     let span = body.value.span;
 
     forbid_intrinsic_abi(tcx, span, fn_sig.abi);
 
-    if let Some(hir::ClosureKind::Coroutine(kind)) = closure_kind {
-        let yield_ty = match kind {
-            hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Gen, _)
-            | hir::CoroutineKind::Coroutine(_) => {
-                let yield_ty = fcx.next_ty_var(TypeVariableOrigin {
-                    kind: TypeVariableOriginKind::TypeInference,
-                    span,
-                });
-                fcx.require_type_is_sized(yield_ty, span, traits::SizedYieldType);
-                yield_ty
-            }
-            // HACK(-Ztrait-solver=next): In the *old* trait solver, we must eagerly
-            // guide inference on the yield type so that we can handle `AsyncIterator`
-            // in this block in projection correctly. In the new trait solver, it is
-            // not a problem.
-            hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::AsyncGen, _) => {
-                let yield_ty = fcx.next_ty_var(TypeVariableOrigin {
-                    kind: TypeVariableOriginKind::TypeInference,
-                    span,
-                });
-                fcx.require_type_is_sized(yield_ty, span, traits::SizedYieldType);
-
-                Ty::new_adt(
-                    tcx,
-                    tcx.adt_def(tcx.require_lang_item(hir::LangItem::Poll, Some(span))),
-                    tcx.mk_args(&[Ty::new_adt(
-                        tcx,
-                        tcx.adt_def(tcx.require_lang_item(hir::LangItem::Option, Some(span))),
-                        tcx.mk_args(&[yield_ty.into()]),
-                    )
-                    .into()]),
-                )
-            }
-            hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Async, _) => Ty::new_unit(tcx),
-        };
-
-        // Resume type defaults to `()` if the coroutine has no argument.
-        let resume_ty = fn_sig.inputs().get(0).copied().unwrap_or_else(|| Ty::new_unit(tcx));
-
-        fcx.resume_yield_tys = Some((resume_ty, yield_ty));
-    }
-
     GatherLocalsVisitor::new(fcx).visit_body(body);
 
     // C-variadic fns also have a `VaList` input that's not listed in `fn_sig`
@@ -147,25 +106,6 @@ pub(super) fn check_fn<'a, 'tcx>(
     fcx.require_type_is_sized(declared_ret_ty, return_or_body_span, traits::SizedReturnType);
     fcx.check_return_expr(body.value, false);
 
-    // We insert the deferred_coroutine_interiors entry after visiting the body.
-    // This ensures that all nested coroutines appear before the entry of this coroutine.
-    // resolve_coroutine_interiors relies on this property.
-    let coroutine_ty = if let Some(hir::ClosureKind::Coroutine(coroutine_kind)) = closure_kind {
-        let interior = fcx
-            .next_ty_var(TypeVariableOrigin { kind: TypeVariableOriginKind::MiscVariable, span });
-        fcx.deferred_coroutine_interiors.borrow_mut().push((
-            fn_def_id,
-            body.id(),
-            interior,
-            coroutine_kind,
-        ));
-
-        let (resume_ty, yield_ty) = fcx.resume_yield_tys.unwrap();
-        Some(CoroutineTypes { resume_ty, yield_ty, interior })
-    } else {
-        None
-    };
-
     // Finalize the return check by taking the LUB of the return types
     // we saw and assigning it to the expected return type. This isn't
     // really expected to fail, since the coercions would have failed
@@ -201,7 +141,7 @@ pub(super) fn check_fn<'a, 'tcx>(
         check_lang_start_fn(tcx, fn_sig, fn_def_id);
     }
 
-    coroutine_ty
+    fcx.coroutine_types
 }
 
 fn check_panic_info_fn(tcx: TyCtxt<'_>, fn_id: LocalDefId, fn_sig: ty::FnSig<'_>) {

compiler/rustc_hir_typeck/src/closure.rs

@@ -72,7 +72,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         opt_kind: Option<ty::ClosureKind>,
         expected_sig: Option<ExpectedSig<'tcx>>,
     ) -> Ty<'tcx> {
-        let body = self.tcx.hir().body(closure.body);
+        let tcx = self.tcx;
+        let body = tcx.hir().body(closure.body);
 
         trace!("decl = {:#?}", closure.fn_decl);
         let expr_def_id = closure.def_id;
@@ -83,81 +84,151 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
 
         debug!(?bound_sig, ?liberated_sig);
 
+        // FIXME: We could probably actually just unify this further --
+        // instead of having a `FnSig` and a `Option<CoroutineTypes>`,
+        // we can have a `ClosureSignature { Coroutine { .. }, Closure { .. } }`,
+        // similar to how `ty::GenSig` is a distinct data structure.
+        let coroutine_types = match closure.kind {
+            hir::ClosureKind::Closure => None,
+            hir::ClosureKind::Coroutine(kind) => {
+                let yield_ty = match kind {
+                    hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Gen, _)
+                    | hir::CoroutineKind::Coroutine(_) => {
+                        let yield_ty = self.next_ty_var(TypeVariableOrigin {
+                            kind: TypeVariableOriginKind::TypeInference,
+                            span: expr_span,
+                        });
+                        self.require_type_is_sized(yield_ty, expr_span, traits::SizedYieldType);
+                        yield_ty
+                    }
+                    // HACK(-Ztrait-solver=next): In the *old* trait solver, we must eagerly
+                    // guide inference on the yield type so that we can handle `AsyncIterator`
+                    // in this block in projection correctly. In the new trait solver, it is
+                    // not a problem.
+                    hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::AsyncGen, _) => {
+                        let yield_ty = self.next_ty_var(TypeVariableOrigin {
+                            kind: TypeVariableOriginKind::TypeInference,
+                            span: expr_span,
+                        });
+                        self.require_type_is_sized(yield_ty, expr_span, traits::SizedYieldType);
+
+                        Ty::new_adt(
+                            tcx,
+                            tcx.adt_def(
+                                tcx.require_lang_item(hir::LangItem::Poll, Some(expr_span)),
+                            ),
+                            tcx.mk_args(&[Ty::new_adt(
+                                tcx,
+                                tcx.adt_def(
+                                    tcx.require_lang_item(hir::LangItem::Option, Some(expr_span)),
+                                ),
+                                tcx.mk_args(&[yield_ty.into()]),
+                            )
+                            .into()]),
+                        )
+                    }
+                    hir::CoroutineKind::Desugared(hir::CoroutineDesugaring::Async, _) => {
+                        tcx.types.unit
+                    }
+                };
+
+                // Resume type defaults to `()` if the coroutine has no argument.
+                let resume_ty = liberated_sig.inputs().get(0).copied().unwrap_or(tcx.types.unit);
+
+                Some(CoroutineTypes { resume_ty, yield_ty })
+            }
+        };
+
         let mut fcx = FnCtxt::new(self, self.param_env, closure.def_id);
-        let coroutine_types = check_fn(
+        check_fn(
             &mut fcx,
             liberated_sig,
+            coroutine_types,
             closure.fn_decl,
             expr_def_id,
             body,
-            Some(closure.kind),
             // Closure "rust-call" ABI doesn't support unsized params
             false,
         );
 
-        let parent_args = GenericArgs::identity_for_item(
+        let parent_args =
-            self.tcx,
+            GenericArgs::identity_for_item(tcx, tcx.typeck_root_def_id(expr_def_id.to_def_id()));
-            self.tcx.typeck_root_def_id(expr_def_id.to_def_id()),
-        );
 
         let tupled_upvars_ty = self.next_root_ty_var(TypeVariableOrigin {
             kind: TypeVariableOriginKind::ClosureSynthetic,
-            span: self.tcx.def_span(expr_def_id),
+            span: expr_span,
         });
 
-        if let Some(CoroutineTypes { resume_ty, yield_ty, interior }) = coroutine_types {
+        match closure.kind {
-            let coroutine_args = ty::CoroutineArgs::new(
+            hir::ClosureKind::Closure => {
-                self.tcx,
+                assert_eq!(coroutine_types, None);
-                ty::CoroutineArgsParts {
+                // Tuple up the arguments and insert the resulting function type into
-                    parent_args,
+                // the `closures` table.
-                    resume_ty,
+                let sig = bound_sig.map_bound(|sig| {
-                    yield_ty,
+                    tcx.mk_fn_sig(
-                    return_ty: liberated_sig.output(),
+                        [Ty::new_tup(tcx, sig.inputs())],
-                    witness: interior,
+                        sig.output(),
-                    tupled_upvars_ty,
+                        sig.c_variadic,
-                },
+                        sig.unsafety,
-            );
+                        sig.abi,
+                    )
+                });
 
-            return Ty::new_coroutine(self.tcx, expr_def_id.to_def_id(), coroutine_args.args);
+                debug!(?sig, ?opt_kind);
+
+                let closure_kind_ty = match opt_kind {
+                    Some(kind) => Ty::from_closure_kind(tcx, kind),
+
+                    // Create a type variable (for now) to represent the closure kind.
+                    // It will be unified during the upvar inference phase (`upvar.rs`)
+                    None => self.next_root_ty_var(TypeVariableOrigin {
+                        // FIXME(eddyb) distinguish closure kind inference variables from the rest.
+                        kind: TypeVariableOriginKind::ClosureSynthetic,
+                        span: expr_span,
+                    }),
+                };
+
+                let closure_args = ty::ClosureArgs::new(
+                    tcx,
+                    ty::ClosureArgsParts {
+                        parent_args,
+                        closure_kind_ty,
+                        closure_sig_as_fn_ptr_ty: Ty::new_fn_ptr(tcx, sig),
+                        tupled_upvars_ty,
+                    },
+                );
+
+                Ty::new_closure(tcx, expr_def_id.to_def_id(), closure_args.args)
+            }
+            hir::ClosureKind::Coroutine(_) => {
+                let Some(CoroutineTypes { resume_ty, yield_ty }) = coroutine_types else {
+                    bug!("expected coroutine to have yield/resume types");
+                };
+                let interior = fcx.next_ty_var(TypeVariableOrigin {
+                    kind: TypeVariableOriginKind::MiscVariable,
+                    span: body.value.span,
+                });
+                fcx.deferred_coroutine_interiors.borrow_mut().push((
+                    expr_def_id,
+                    body.id(),
+                    interior,
+                ));
+
+                let coroutine_args = ty::CoroutineArgs::new(
+                    tcx,
+                    ty::CoroutineArgsParts {
+                        parent_args,
+                        resume_ty,
+                        yield_ty,
+                        return_ty: liberated_sig.output(),
+                        witness: interior,
+                        tupled_upvars_ty,
+                    },
+                );
+
+                Ty::new_coroutine(tcx, expr_def_id.to_def_id(), coroutine_args.args)
+            }
         }
-
-        // Tuple up the arguments and insert the resulting function type into
-        // the `closures` table.
-        let sig = bound_sig.map_bound(|sig| {
-            self.tcx.mk_fn_sig(
-                [Ty::new_tup(self.tcx, sig.inputs())],
-                sig.output(),
-                sig.c_variadic,
-                sig.unsafety,
-                sig.abi,
-            )
-        });
-
-        debug!(?sig, ?opt_kind);
-
-        let closure_kind_ty = match opt_kind {
-            Some(kind) => Ty::from_closure_kind(self.tcx, kind),
-
-            // Create a type variable (for now) to represent the closure kind.
-            // It will be unified during the upvar inference phase (`upvar.rs`)
-            None => self.next_root_ty_var(TypeVariableOrigin {
-                // FIXME(eddyb) distinguish closure kind inference variables from the rest.
-                kind: TypeVariableOriginKind::ClosureSynthetic,
-                span: expr_span,
-            }),
-        };
-
-        let closure_args = ty::ClosureArgs::new(
-            self.tcx,
-            ty::ClosureArgsParts {
-                parent_args,
-                closure_kind_ty,
-                closure_sig_as_fn_ptr_ty: Ty::new_fn_ptr(self.tcx, sig),
-                tupled_upvars_ty,
-            },
-        );
-
-        Ty::new_closure(self.tcx, expr_def_id.to_def_id(), closure_args.args)
     }
 
     /// Given the expected type, figures out what it can about this closure we

compiler/rustc_hir_typeck/src/expr.rs

@@ -15,6 +15,7 @@ use crate::errors::{
 use crate::fatally_break_rust;
 use crate::method::SelfSource;
 use crate::type_error_struct;
+use crate::CoroutineTypes;
 use crate::Expectation::{self, ExpectCastableToType, ExpectHasType, NoExpectation};
 use crate::{
     report_unexpected_variant_res, BreakableCtxt, Diverges, FnCtxt, Needs,
@@ -3163,8 +3164,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         value: &'tcx hir::Expr<'tcx>,
         expr: &'tcx hir::Expr<'tcx>,
     ) -> Ty<'tcx> {
-        match self.resume_yield_tys {
+        match self.coroutine_types {
-            Some((resume_ty, yield_ty)) => {
+            Some(CoroutineTypes { resume_ty, yield_ty }) => {
                 self.check_expr_coercible_to_type(value, yield_ty, None);
 
                 resume_ty

compiler/rustc_hir_typeck/src/fallback.rs

@@ -85,7 +85,7 @@ impl<'tcx> FnCtxt<'_, 'tcx> {
             return false;
         }
 
-        // not setting the `fallback_has_occured` field here because
+        // not setting the `fallback_has_occurred` field here because
         // that field is only used for type fallback diagnostics.
         for effect in unsolved_effects {
             let expected = self.tcx.consts.true_;

compiler/rustc_hir_typeck/src/fn_ctxt/_impl.rs

@@ -534,7 +534,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         let coroutines = std::mem::take(&mut *self.deferred_coroutine_interiors.borrow_mut());
         debug!(?coroutines);
 
-        for &(expr_def_id, body_id, interior, _) in coroutines.iter() {
+        for &(expr_def_id, body_id, interior) in coroutines.iter() {
             debug!(?expr_def_id);
 
             // Create the `CoroutineWitness` type that we will unify with `interior`.

compiler/rustc_hir_typeck/src/fn_ctxt/mod.rs

@@ -5,7 +5,7 @@ mod checks;
 mod suggestions;
 
 use crate::coercion::DynamicCoerceMany;
-use crate::{Diverges, EnclosingBreakables, Inherited};
+use crate::{CoroutineTypes, Diverges, EnclosingBreakables, Inherited};
 use rustc_errors::{DiagCtxt, ErrorGuaranteed};
 use rustc_hir as hir;
 use rustc_hir::def_id::{DefId, LocalDefId};
@@ -68,7 +68,7 @@ pub struct FnCtxt<'a, 'tcx> {
     /// First span of a return site that we find. Used in error messages.
     pub(super) ret_coercion_span: Cell<Option<Span>>,
 
-    pub(super) resume_yield_tys: Option<(Ty<'tcx>, Ty<'tcx>)>,
+    pub(super) coroutine_types: Option<CoroutineTypes<'tcx>>,
 
     /// Whether the last checked node generates a divergence (e.g.,
     /// `return` will set this to `Always`). In general, when entering
@@ -122,7 +122,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             err_count_on_creation: inh.tcx.dcx().err_count(),
             ret_coercion: None,
             ret_coercion_span: Cell::new(None),
-            resume_yield_tys: None,
+            coroutine_types: None,
             diverges: Cell::new(Diverges::Maybe),
             enclosing_breakables: RefCell::new(EnclosingBreakables {
                 stack: Vec::new(),

compiler/rustc_hir_typeck/src/inherited.rs

@@ -55,8 +55,7 @@ pub struct Inherited<'tcx> {
 
     pub(super) deferred_asm_checks: RefCell<Vec<(&'tcx hir::InlineAsm<'tcx>, hir::HirId)>>,
 
-    pub(super) deferred_coroutine_interiors:
+    pub(super) deferred_coroutine_interiors: RefCell<Vec<(LocalDefId, hir::BodyId, Ty<'tcx>)>>,
-        RefCell<Vec<(LocalDefId, hir::BodyId, Ty<'tcx>, hir::CoroutineKind)>>,
 
     /// Whenever we introduce an adjustment from `!` into a type variable,
     /// we record that type variable here. This is later used to inform

compiler/rustc_hir_typeck/src/lib.rs

@@ -193,7 +193,7 @@ fn typeck_with_fallback<'tcx>(
         let fn_sig = tcx.liberate_late_bound_regions(def_id.to_def_id(), fn_sig);
         let fn_sig = fcx.normalize(body.value.span, fn_sig);
 
-        check_fn(&mut fcx, fn_sig, decl, def_id, body, None, tcx.features().unsized_fn_params);
+        check_fn(&mut fcx, fn_sig, None, decl, def_id, body, tcx.features().unsized_fn_params);
     } else {
         let expected_type = if let Some(&hir::Ty { kind: hir::TyKind::Infer, span, .. }) = body_ty {
             Some(fcx.next_ty_var(TypeVariableOrigin {
@@ -295,15 +295,13 @@ fn typeck_with_fallback<'tcx>(
 /// When `check_fn` is invoked on a coroutine (i.e., a body that
 /// includes yield), it returns back some information about the yield
 /// points.
+#[derive(Debug, PartialEq, Copy, Clone)]
 struct CoroutineTypes<'tcx> {
     /// Type of coroutine argument / values returned by `yield`.
     resume_ty: Ty<'tcx>,
 
     /// Type of value that is yielded.
     yield_ty: Ty<'tcx>,
-
-    /// Types that are captured (see `CoroutineInterior` for more).
-    interior: Ty<'tcx>,
 }
 
 #[derive(Copy, Clone, Debug, PartialEq, Eq)]

compiler/rustc_hir_typeck/src/method/suggest.rs

@@ -2252,6 +2252,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         &self,
         err: &mut Diagnostic,
         errors: Vec<FulfillmentError<'tcx>>,
+        suggest_derive: bool,
     ) {
         let all_local_types_needing_impls =
             errors.iter().all(|e| match e.obligation.predicate.kind().skip_binder() {
@@ -2322,10 +2323,15 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             .iter()
             .map(|e| (e.obligation.predicate, None, Some(e.obligation.cause.clone())))
             .collect();
-        self.suggest_derive(err, &preds);
+        if suggest_derive {
+            self.suggest_derive(err, &preds);
+        } else {
+            // The predicate comes from a binop where the lhs and rhs have different types.
+            let _ = self.note_predicate_source_and_get_derives(err, &preds);
+        }
     }
 
-    pub fn suggest_derive(
+    fn note_predicate_source_and_get_derives(
         &self,
         err: &mut Diagnostic,
         unsatisfied_predicates: &[(
@@ -2333,7 +2339,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             Option<ty::Predicate<'tcx>>,
             Option<ObligationCause<'tcx>>,
         )],
-    ) {
+    ) -> Vec<(String, Span, Symbol)> {
         let mut derives = Vec::<(String, Span, Symbol)>::new();
         let mut traits = Vec::new();
         for (pred, _, _) in unsatisfied_predicates {
@@ -2382,21 +2388,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
         traits.sort();
         traits.dedup();
 
-        derives.sort();
-        derives.dedup();
-
-        let mut derives_grouped = Vec::<(String, Span, String)>::new();
-        for (self_name, self_span, trait_name) in derives.into_iter() {
-            if let Some((last_self_name, _, ref mut last_trait_names)) = derives_grouped.last_mut()
-            {
-                if last_self_name == &self_name {
-                    last_trait_names.push_str(format!(", {trait_name}").as_str());
-                    continue;
-                }
-            }
-            derives_grouped.push((self_name, self_span, trait_name.to_string()));
-        }
-
         let len = traits.len();
         if len > 0 {
             let span =
@@ -2419,6 +2410,34 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
             );
         }
 
+        derives
+    }
+
+    pub(crate) fn suggest_derive(
+        &self,
+        err: &mut Diagnostic,
+        unsatisfied_predicates: &[(
+            ty::Predicate<'tcx>,
+            Option<ty::Predicate<'tcx>>,
+            Option<ObligationCause<'tcx>>,
+        )],
+    ) {
+        let mut derives = self.note_predicate_source_and_get_derives(err, unsatisfied_predicates);
+        derives.sort();
+        derives.dedup();
+
+        let mut derives_grouped = Vec::<(String, Span, String)>::new();
+        for (self_name, self_span, trait_name) in derives.into_iter() {
+            if let Some((last_self_name, _, ref mut last_trait_names)) = derives_grouped.last_mut()
+            {
+                if last_self_name == &self_name {
+                    last_trait_names.push_str(format!(", {trait_name}").as_str());
+                    continue;
+                }
+            }
+            derives_grouped.push((self_name, self_span, trait_name.to_string()));
+        }
+
         for (self_name, self_span, traits) in &derives_grouped {
             err.span_suggestion_verbose(
                 self_span.shrink_to_lo(),

compiler/rustc_hir_typeck/src/op.rs

@@ -318,7 +318,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             lhs_expr.span,
                             format!("cannot use `{}=` on type `{}`", op.node.as_str(), lhs_ty),
                         );
-                        self.note_unmet_impls_on_type(&mut err, errors);
+                        self.note_unmet_impls_on_type(&mut err, errors, false);
                         (err, None)
                     }
                     IsAssign::No => {
@@ -375,7 +375,8 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             err.span_label(lhs_expr.span, lhs_ty.to_string());
                             err.span_label(rhs_expr.span, rhs_ty.to_string());
                         }
-                        self.note_unmet_impls_on_type(&mut err, errors);
+                        let suggest_derive = self.can_eq(self.param_env, lhs_ty, rhs_ty);
+                        self.note_unmet_impls_on_type(&mut err, errors, suggest_derive);
                         (err, output_def_id)
                     }
                 };
@@ -852,7 +853,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                             Str | Never | Char | Tuple(_) | Array(_, _) => {}
                             Ref(_, lty, _) if *lty.kind() == Str => {}
                             _ => {
-                                self.note_unmet_impls_on_type(&mut err, errors);
+                                self.note_unmet_impls_on_type(&mut err, errors, true);
                             }
                         }
                     }

compiler/rustc_lint/src/builtin.rs

@@ -2734,10 +2734,13 @@ impl<'tcx> LateLintPass<'tcx> for NamedAsmLabels {
     #[allow(rustc::diagnostic_outside_of_impl)]
     fn check_expr(&mut self, cx: &LateContext<'tcx>, expr: &'tcx hir::Expr<'tcx>) {
         if let hir::Expr {
-            kind: hir::ExprKind::InlineAsm(hir::InlineAsm { template_strs, .. }),
+            kind: hir::ExprKind::InlineAsm(hir::InlineAsm { template_strs, options, .. }),
             ..
         } = expr
         {
+            // asm with `options(raw)` does not do replacement with `{` and `}`.
+            let raw = options.contains(InlineAsmOptions::RAW);
+
             for (template_sym, template_snippet, template_span) in template_strs.iter() {
                 let template_str = template_sym.as_str();
                 let find_label_span = |needle: &str| -> Option<Span> {
@@ -2763,24 +2766,57 @@ impl<'tcx> LateLintPass<'tcx> for NamedAsmLabels {
                 for statement in statements {
                     // If there's a comment, trim it from the statement
                     let statement = statement.find("//").map_or(statement, |idx| &statement[..idx]);
+
+                    // In this loop, if there is ever a non-label, no labels can come after it.
                     let mut start_idx = 0;
-                    for (idx, _) in statement.match_indices(':') {
+                    'label_loop: for (idx, _) in statement.match_indices(':') {
                         let possible_label = statement[start_idx..idx].trim();
                         let mut chars = possible_label.chars();
-                        let Some(c) = chars.next() else {
+
-                            // Empty string means a leading ':' in this section, which is not a label
+                        let Some(start) = chars.next() else {
-                            break;
+                            // Empty string means a leading ':' in this section, which is not a label.
+                            break 'label_loop;
                         };
-                        // A label starts with an alphabetic character or . or _ and continues with alphanumeric characters, _, or $
+
-                        if (c.is_alphabetic() || matches!(c, '.' | '_'))
+                        // Whether a { bracket has been seen and its } hasn't been found yet.
-                            && chars.all(|c| c.is_alphanumeric() || matches!(c, '_' | '$'))
+                        let mut in_bracket = false;
-                        {
+
-                            found_labels.push(possible_label);
+                        // A label starts with an ASCII alphabetic character or . or _
-                        } else {
+                        // A label can also start with a format arg, if it's not a raw asm block.
-                            // If we encounter a non-label, there cannot be any further labels, so stop checking
+                        if !raw && start == '{' {
-                            break;
+                            in_bracket = true;
+                        } else if !(start.is_ascii_alphabetic() || matches!(start, '.' | '_')) {
+                            break 'label_loop;
                         }
 
+                        // Labels continue with ASCII alphanumeric characters, _, or $
+                        for c in chars {
+                            // Inside a template format arg, any character is permitted for the puproses of label detection
+                            // because we assume that it can be replaced with some other valid label string later.
+                            // `options(raw)` asm blocks cannot have format args, so they are excluded from this special case.
+                            if !raw && in_bracket {
+                                if c == '{' {
+                                    // Nested brackets are not allowed in format args, this cannot be a label.
+                                    break 'label_loop;
+                                }
+
+                                if c == '}' {
+                                    // The end of the format arg.
+                                    in_bracket = false;
+                                }
+                            } else if !raw && c == '{' {
+                                // Start of a format arg.
+                                in_bracket = true;
+                            } else {
+                                if !(c.is_ascii_alphanumeric() || matches!(c, '_' | '$')) {
+                                    // The potential label had an invalid character inside it, it cannot be a label.
+                                    break 'label_loop;
+                                }
+                            }
+                        }
+
+                        // If all characters passed the label checks, this is likely a label.
+                        found_labels.push(possible_label);
                         start_idx = idx + 1;
                     }
                 }

compiler/rustc_parse/messages.ftl

@@ -771,6 +771,9 @@ parse_unexpected_if_with_if = unexpected `if` in the condition expression
 parse_unexpected_lifetime_in_pattern = unexpected lifetime `{$symbol}` in pattern
     .suggestion = remove the lifetime
 
+parse_unexpected_paren_in_range_pat = range pattern bounds cannot have parentheses
+parse_unexpected_paren_in_range_pat_sugg = remove these parentheses
+
 parse_unexpected_parentheses_in_for_head = unexpected parentheses surrounding `for` loop head
     .suggestion = remove parentheses in `for` loop
 

compiler/rustc_parse/src/errors.rs

@@ -2378,6 +2378,27 @@ pub(crate) struct ExpectedCommaAfterPatternField {
     pub span: Span,
 }
 
+#[derive(Diagnostic)]
+#[diag(parse_unexpected_paren_in_range_pat)]
+pub(crate) struct UnexpectedParenInRangePat {
+    #[primary_span]
+    pub span: Vec<Span>,
+    #[subdiagnostic]
+    pub sugg: UnexpectedParenInRangePatSugg,
+}
+
+#[derive(Subdiagnostic)]
+#[multipart_suggestion(
+    parse_unexpected_paren_in_range_pat_sugg,
+    applicability = "machine-applicable"
+)]
+pub(crate) struct UnexpectedParenInRangePatSugg {
+    #[suggestion_part(code = "")]
+    pub start_span: Span,
+    #[suggestion_part(code = "")]
+    pub end_span: Span,
+}
+
 #[derive(Diagnostic)]
 #[diag(parse_return_types_use_thin_arrow)]
 pub(crate) struct ReturnTypesUseThinArrow {

compiler/rustc_parse/src/parser/pat.rs

@@ -6,7 +6,8 @@ use crate::errors::{
     InclusiveRangeExtraEquals, InclusiveRangeMatchArrow, InclusiveRangeNoEnd, InvalidMutInPattern,
     PatternOnWrongSideOfAt, RefMutOrderIncorrect, RemoveLet, RepeatedMutInPattern,
     SwitchRefBoxOrder, TopLevelOrPatternNotAllowed, TopLevelOrPatternNotAllowedSugg,
-    TrailingVertNotAllowed, UnexpectedLifetimeInPattern, UnexpectedVertVertBeforeFunctionParam,
+    TrailingVertNotAllowed, UnexpectedLifetimeInPattern, UnexpectedParenInRangePat,
+    UnexpectedParenInRangePatSugg, UnexpectedVertVertBeforeFunctionParam,
     UnexpectedVertVertInPattern,
 };
 use crate::{maybe_recover_from_interpolated_ty_qpath, maybe_whole};
@@ -579,6 +580,8 @@ impl<'a> Parser<'a> {
 
     /// Parse a tuple or parenthesis pattern.
     fn parse_pat_tuple_or_parens(&mut self) -> PResult<'a, PatKind> {
+        let open_paren = self.token.span;
+
         let (fields, trailing_comma) = self.parse_paren_comma_seq(|p| {
             p.parse_pat_allow_top_alt(
                 None,
@@ -591,7 +594,29 @@ impl<'a> Parser<'a> {
         // Here, `(pat,)` is a tuple pattern.
         // For backward compatibility, `(..)` is a tuple pattern as well.
         Ok(if fields.len() == 1 && !(trailing_comma || fields[0].is_rest()) {
-            PatKind::Paren(fields.into_iter().next().unwrap())
+            let pat = fields.into_iter().next().unwrap();
+            let close_paren = self.prev_token.span;
+
+            match &pat.kind {
+                // recover ranges with parentheses around the `(start)..`
+                PatKind::Lit(begin)
+                    if self.may_recover()
+                        && let Some(form) = self.parse_range_end() =>
+                {
+                    self.dcx().emit_err(UnexpectedParenInRangePat {
+                        span: vec![open_paren, close_paren],
+                        sugg: UnexpectedParenInRangePatSugg {
+                            start_span: open_paren,
+                            end_span: close_paren,
+                        },
+                    });
+
+                    self.parse_pat_range_begin_with(begin.clone(), form)?
+                }
+
+                // (pat) with optional parentheses
+                _ => PatKind::Paren(pat),
+            }
         } else {
             PatKind::Tuple(fields)
         })
@@ -794,11 +819,21 @@ impl<'a> Parser<'a> {
                 || t.can_begin_literal_maybe_minus() // e.g. `42`.
                 || t.is_whole_expr()
                 || t.is_lifetime() // recover `'a` instead of `'a'`
+                || (self.may_recover() // recover leading `(`
+                    && t.kind == token::OpenDelim(Delimiter::Parenthesis)
+                    && self.look_ahead(dist + 1, |t| t.kind != token::OpenDelim(Delimiter::Parenthesis))
+                    && self.is_pat_range_end_start(dist + 1))
             })
     }
 
+    /// Parse a range pattern end bound
     fn parse_pat_range_end(&mut self) -> PResult<'a, P<Expr>> {
-        if self.check_inline_const(0) {
+        // recover leading `(`
+        let open_paren = (self.may_recover()
+            && self.eat_noexpect(&token::OpenDelim(Delimiter::Parenthesis)))
+        .then_some(self.prev_token.span);
+
+        let bound = if self.check_inline_const(0) {
             self.parse_const_block(self.token.span, true)
         } else if self.check_path() {
             let lo = self.token.span;
@@ -814,7 +849,22 @@ impl<'a> Parser<'a> {
             Ok(self.mk_expr(lo.to(hi), ExprKind::Path(qself, path)))
         } else {
             self.parse_literal_maybe_minus()
+        }?;
+
+        // recover trailing `)`
+        if let Some(open_paren) = open_paren {
+            self.expect(&token::CloseDelim(Delimiter::Parenthesis))?;
+
+            self.dcx().emit_err(UnexpectedParenInRangePat {
+                span: vec![open_paren, self.prev_token.span],
+                sugg: UnexpectedParenInRangePatSugg {
+                    start_span: open_paren,
+                    end_span: self.prev_token.span,
+                },
+            });
         }
+
+        Ok(bound)
     }
 
     /// Is this the start of a pattern beginning with a path?

compiler/rustc_session/src/session.rs

@@ -1274,7 +1274,10 @@ fn validate_commandline_args_with_session_available(sess: &Session) {
     }
 
     // Cannot enable crt-static with sanitizers on Linux
-    if sess.crt_static(None) && !sess.opts.unstable_opts.sanitizer.is_empty() {
+    if sess.crt_static(None)
+        && !sess.opts.unstable_opts.sanitizer.is_empty()
+        && !sess.target.is_like_msvc
+    {
         sess.dcx().emit_err(errors::CannotEnableCrtStaticLinux);
     }
 

compiler/rustc_target/src/spec/targets/i686_pc_windows_msvc.rs

@@ -1,9 +1,10 @@
-use crate::spec::{base, LinkerFlavor, Lld, Target};
+use crate::spec::{base, LinkerFlavor, Lld, SanitizerSet, Target};
 
 pub fn target() -> Target {
     let mut base = base::windows_msvc::opts();
     base.cpu = "pentium4".into();
     base.max_atomic_width = Some(64);
+    base.supported_sanitizers = SanitizerSet::ADDRESS;
 
     base.add_pre_link_args(
         LinkerFlavor::Msvc(Lld::No),

compiler/rustc_target/src/spec/targets/x86_64_pc_windows_msvc.rs

@@ -1,10 +1,11 @@
-use crate::spec::{base, Target};
+use crate::spec::{base, SanitizerSet, Target};
 
 pub fn target() -> Target {
     let mut base = base::windows_msvc::opts();
     base.cpu = "x86-64".into();
     base.plt_by_default = false;
     base.max_atomic_width = Some(64);
+    base.supported_sanitizers = SanitizerSet::ADDRESS;
 
     Target {
         llvm_target: "x86_64-pc-windows-msvc".into(),

library/std/src/os/unix/net/listener.rs

@@ -73,8 +73,18 @@ impl UnixListener {
         unsafe {
             let inner = Socket::new_raw(libc::AF_UNIX, libc::SOCK_STREAM)?;
             let (addr, len) = sockaddr_un(path.as_ref())?;
-            const backlog: libc::c_int =
+            #[cfg(any(target_os = "windows", target_os = "redox"))]
-                if cfg!(any(target_os = "linux", target_os = "freebsd")) { -1 } else { 128 };
+            const backlog: libc::c_int = 128;
+            #[cfg(any(target_os = "linux", target_os = "freebsd", target_os = "openbsd"))]
+            const backlog: libc::c_int = -1;
+            #[cfg(not(any(
+                target_os = "windows",
+                target_os = "redox",
+                target_os = "linux",
+                target_os = "freebsd",
+                target_os = "openbsd"
+            )))]
+            const backlog: libc::c_int = libc::SOMAXCONN;
 
             cvt(libc::bind(inner.as_inner().as_raw_fd(), &addr as *const _ as *const _, len as _))?;
             cvt(libc::listen(inner.as_inner().as_raw_fd(), backlog))?;

src/bootstrap/src/core/build_steps/compile.rs

@@ -274,7 +274,7 @@ fn copy_third_party_objects(
 ) -> Vec<(PathBuf, DependencyType)> {
     let mut target_deps = vec![];
 
-    if builder.config.sanitizers_enabled(target) && compiler.stage != 0 {
+    if builder.config.needs_sanitizer_runtime_built(target) && compiler.stage != 0 {
         // The sanitizers are only copied in stage1 or above,
         // to avoid creating dependency on LLVM.
         target_deps.extend(

src/bootstrap/src/core/build_steps/test.rs

@@ -1937,6 +1937,29 @@ NOTE: if you're sure you want to do this, please open an issue as to why. In the
             }
         }
 
+        // Special setup to enable running with sanitizers on MSVC.
+        if !builder.config.dry_run()
+            && target.contains("msvc")
+            && builder.config.sanitizers_enabled(target)
+        {
+            // Ignore interception failures: not all dlls in the process will have been built with
+            // address sanitizer enabled (e.g., ntdll.dll).
+            cmd.env("ASAN_WIN_CONTINUE_ON_INTERCEPTION_FAILURE", "1");
+            // Add the address sanitizer runtime to the PATH - it is located next to cl.exe.
+            let asan_runtime_path =
+                builder.cc.borrow()[&target].path().parent().unwrap().to_path_buf();
+            let old_path = cmd
+                .get_envs()
+                .find_map(|(k, v)| (k == "PATH").then_some(v))
+                .flatten()
+                .map_or_else(|| env::var_os("PATH").unwrap_or_default(), |v| v.to_owned());
+            let new_path = env::join_paths(
+                env::split_paths(&old_path).chain(std::iter::once(asan_runtime_path)),
+            )
+            .expect("Could not add ASAN runtime path to PATH");
+            cmd.env("PATH", new_path);
+        }
+
         // Some UI tests trigger behavior in rustc where it reads $CARGO and changes behavior if it exists.
         // To make the tests work that rely on it not being set, make sure it is not set.
         cmd.env_remove("CARGO");

src/bootstrap/src/core/config/config.rs

@@ -2180,8 +2180,15 @@ impl Config {
         self.target_config.get(&target).map(|t| t.sanitizers).flatten().unwrap_or(self.sanitizers)
     }
 
-    pub fn any_sanitizers_enabled(&self) -> bool {
+    pub fn needs_sanitizer_runtime_built(&self, target: TargetSelection) -> bool {
-        self.target_config.values().any(|t| t.sanitizers == Some(true)) || self.sanitizers
+        // MSVC uses the Microsoft-provided sanitizer runtime, but all other runtimes we build.
+        !target.is_msvc() && self.sanitizers_enabled(target)
+    }
+
+    pub fn any_sanitizers_to_build(&self) -> bool {
+        self.target_config
+            .iter()
+            .any(|(ts, t)| !ts.is_msvc() && t.sanitizers.unwrap_or(self.sanitizers))
     }
 
     pub fn profiler_path(&self, target: TargetSelection) -> Option<&str> {

src/bootstrap/src/core/sanity.rs

@@ -96,7 +96,7 @@ pub fn check(build: &mut Build) {
             })
             .any(|build_llvm_ourselves| build_llvm_ourselves);
 
-    let need_cmake = building_llvm || build.config.any_sanitizers_enabled();
+    let need_cmake = building_llvm || build.config.any_sanitizers_to_build();
     if need_cmake && cmd_finder.maybe_have("cmake").is_none() {
         eprintln!(
             "

src/librustdoc/passes/lint/redundant_explicit_links.rs

@@ -244,7 +244,7 @@ fn find_resolution(resolutions: &DocLinkResMap, path: &str) -> Option<Res<NodeId
         .find_map(|ns| resolutions.get(&(Symbol::intern(path), ns)).copied().flatten())
 }
 
-/// Collects all neccessary data of link.
+/// Collects all necessary data of link.
 fn collect_link_data(offset_iter: &mut OffsetIter<'_, '_>) -> LinkData {
     let mut resolvable_link = None;
     let mut resolvable_link_range = None;

tests/codegen/maybeuninit-rvo.rs

@@ -0,0 +1,33 @@
+// compile-flags: -O
+#![feature(c_unwind)]
+#![crate_type = "lib"]
+
+pub struct Foo([u8; 1000]);
+
+extern "C" {
+    fn init(p: *mut Foo);
+}
+
+pub fn new_from_uninit() -> Foo {
+    // CHECK-LABEL: new_from_uninit
+    // CHECK-NOT: call void @llvm.memcpy.
+    let mut x = std::mem::MaybeUninit::uninit();
+    unsafe {
+        init(x.as_mut_ptr());
+        x.assume_init()
+    }
+}
+
+extern "C-unwind" {
+    fn init_unwind(p: *mut Foo);
+}
+
+pub fn new_from_uninit_unwind() -> Foo {
+    // CHECK-LABEL: new_from_uninit
+    // CHECK: call void @llvm.memcpy.
+    let mut x = std::mem::MaybeUninit::uninit();
+    unsafe {
+        init_unwind(x.as_mut_ptr());
+        x.assume_init()
+    }
+}

tests/coverage/macro_name_span.cov-map

@@ -1,15 +1,15 @@
 Function name: macro_name_span::affected_function
-Raw bytes (9): 0x[01, 01, 00, 01, 01, 06, 1b, 00, 20]
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 16, 1c, 02, 06]
 Number of files: 1
 - file 0 => global file 1
 Number of expressions: 0
 Number of file 0 mappings: 1
-- Code(Counter(0)) at (prev + 6, 27) to (start + 0, 32)
+- Code(Counter(0)) at (prev + 22, 28) to (start + 2, 6)
 
 Function name: macro_name_span::main
-Raw bytes (9): 0x[01, 02, 00, 01, 01, 0b, 01, 02, 02]
+Raw bytes (9): 0x[01, 01, 00, 01, 01, 0b, 01, 02, 02]
 Number of files: 1
-- file 0 => global file 2
+- file 0 => global file 1
 Number of expressions: 0
 Number of file 0 mappings: 1
 - Code(Counter(0)) at (prev + 11, 1) to (start + 2, 2)

tests/coverage/macro_name_span.coverage

@@ -1,16 +1,3 @@
-$DIR/auxiliary/macro_name_span_helper.rs:
-   LL|       |// edition: 2021
-   LL|       |
-   LL|       |#[macro_export]
-   LL|       |macro_rules! macro_that_defines_a_function {
-   LL|       |    (fn $name:ident () $body:tt) => {
-   LL|      1|        fn $name () -> () $body
-   LL|       |    }
-   LL|       |}
-   LL|       |
-   LL|       |// Non-executable comment.
-
-$DIR/macro_name_span.rs:
    LL|       |// edition: 2021
    LL|       |
    LL|       |// Regression test for <https://github.com/rust-lang/rust/issues/117788>.
@@ -32,8 +19,8 @@ $DIR/macro_name_span.rs:
    LL|       |}
    LL|       |
    LL|       |macro_name_span_helper::macro_that_defines_a_function! {
-   LL|       |    fn affected_function() {
+   LL|      1|    fn affected_function() {
-   LL|       |        macro_with_an_unreasonably_and_egregiously_long_name!();
+   LL|      1|        macro_with_an_unreasonably_and_egregiously_long_name!();
-   LL|       |    }
+   LL|      1|    }
    LL|       |}
 

tests/run-make/sanitizer-cdylib-link/Makefile

@@ -12,5 +12,5 @@ LOG := $(TMPDIR)/log.txt
 
 all:
 	$(RUSTC) -g -Z sanitizer=address --crate-type cdylib --target $(TARGET) library.rs
-	$(RUSTC) -g -Z sanitizer=address --crate-type bin --target $(TARGET) -llibrary program.rs
+	$(RUSTC) -g -Z sanitizer=address --crate-type bin --target $(TARGET) program.rs
 	LD_LIBRARY_PATH=$(TMPDIR) $(TMPDIR)/program 2>&1 | $(CGREP) stack-buffer-overflow

tests/run-make/sanitizer-cdylib-link/program.rs

@@ -1,3 +1,5 @@
+#[cfg_attr(windows, link(name = "library.dll.lib", modifiers = "+verbatim"))]
+#[cfg_attr(not(windows), link(name = "library"))]
 extern "C" {
     fn overflow();
 }

tests/run-make/sanitizer-dylib-link/Makefile

@@ -12,5 +12,5 @@ LOG := $(TMPDIR)/log.txt
 
 all:
 	$(RUSTC) -g -Z sanitizer=address --crate-type dylib --target $(TARGET) library.rs
-	$(RUSTC) -g -Z sanitizer=address --crate-type bin --target $(TARGET) -llibrary program.rs
+	$(RUSTC) -g -Z sanitizer=address --crate-type bin --target $(TARGET) program.rs
 	LD_LIBRARY_PATH=$(TMPDIR) $(TMPDIR)/program 2>&1 | $(CGREP) stack-buffer-overflow

tests/run-make/sanitizer-dylib-link/program.rs

@@ -1,3 +1,5 @@
+#[cfg_attr(windows, link(name = "library.dll.lib", modifiers = "+verbatim"))]
+#[cfg_attr(not(windows), link(name = "library"))]
 extern "C" {
     fn overflow();
 }

tests/run-make/sanitizer-staticlib-link/program.rs

@@ -1,4 +1,4 @@
-#[link(name = "library")]
+#[link(name = "library", kind = "static")]
 extern "C" {
     fn overflow();
 }

tests/ui/asm/named-asm-labels.rs

@@ -120,6 +120,27 @@ fn main() {
         // is there an example that is valid x86 for this test?
         asm!(":bbb nop");
 
+        // non-ascii characters are not allowed in labels, so should not trigger the lint
+        asm!("Ù: nop");
+        asm!("testÙ: nop");
+        asm!("_Ù_: nop");
+
+        // Format arguments should be conservatively assumed to be valid characters in labels
+        // Would emit `test_rax:` or similar
+        #[allow(asm_sub_register)]
+        {
+            asm!("test_{}: nop", in(reg) 10); //~ ERROR avoid using named labels
+        }
+        asm!("test_{}: nop", const 10); //~ ERROR avoid using named labels
+        asm!("test_{}: nop", sym main); //~ ERROR avoid using named labels
+        asm!("{}_test: nop", const 10); //~ ERROR avoid using named labels
+        asm!("test_{}_test: nop", const 10); //~ ERROR avoid using named labels
+        asm!("{}: nop", const 10); //~ ERROR avoid using named labels
+
+        asm!("{uwu}: nop", uwu = const 10); //~ ERROR avoid using named labels
+        asm!("{0}: nop", const 10); //~ ERROR avoid using named labels
+        asm!("{1}: nop", "/* {0} */", const 10, const 20); //~ ERROR avoid using named labels
+
         // Test include_str in asm
         asm!(include_str!("named-asm-labels.s")); //~ ERROR avoid using named labels
 

tests/ui/asm/named-asm-labels.stderr

@@ -245,7 +245,88 @@ LL |             ab: nop // ab: does foo
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:124:14
+  --> $DIR/named-asm-labels.rs:132:19
+   |
+LL |             asm!("test_{}: nop", in(reg) 10);
+   |                   ^^^^^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:134:15
+   |
+LL |         asm!("test_{}: nop", const 10);
+   |               ^^^^^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:135:15
+   |
+LL |         asm!("test_{}: nop", sym main);
+   |               ^^^^^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:136:15
+   |
+LL |         asm!("{}_test: nop", const 10);
+   |               ^^^^^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:137:15
+   |
+LL |         asm!("test_{}_test: nop", const 10);
+   |               ^^^^^^^^^^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:138:15
+   |
+LL |         asm!("{}: nop", const 10);
+   |               ^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:140:15
+   |
+LL |         asm!("{uwu}: nop", uwu = const 10);
+   |               ^^^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:141:15
+   |
+LL |         asm!("{0}: nop", const 10);
+   |               ^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:142:15
+   |
+LL |         asm!("{1}: nop", "/* {0} */", const 10, const 20);
+   |               ^^^
+   |
+   = help: only local labels of the form `<number>:` should be used in inline asm
+   = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
+
+error: avoid using named labels in inline assembly
+  --> $DIR/named-asm-labels.rs:145:14
    |
 LL |         asm!(include_str!("named-asm-labels.s"));
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -254,7 +335,7 @@ LL |         asm!(include_str!("named-asm-labels.s"));
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 warning: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:134:19
+  --> $DIR/named-asm-labels.rs:155:19
    |
 LL |             asm!("warned: nop");
    |                   ^^^^^^
@@ -262,13 +343,13 @@ LL |             asm!("warned: nop");
    = help: only local labels of the form `<number>:` should be used in inline asm
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 note: the lint level is defined here
-  --> $DIR/named-asm-labels.rs:132:16
+  --> $DIR/named-asm-labels.rs:153:16
    |
 LL |         #[warn(named_asm_labels)]
    |                ^^^^^^^^^^^^^^^^
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:143:20
+  --> $DIR/named-asm-labels.rs:164:20
    |
 LL |     unsafe { asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1, options(noreturn)) }
    |                    ^^^^^
@@ -277,7 +358,7 @@ LL |     unsafe { asm!(".Lfoo: mov rax, {}; ret;", "nop", const 1, options(noret
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:149:20
+  --> $DIR/named-asm-labels.rs:170:20
    |
 LL |     unsafe { asm!(".Lbar: mov rax, {}; ret;", "nop", const 1, options(noreturn)) }
    |                    ^^^^^
@@ -286,7 +367,7 @@ LL |     unsafe { asm!(".Lbar: mov rax, {}; ret;", "nop", const 1, options(noret
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:157:20
+  --> $DIR/named-asm-labels.rs:178:20
    |
 LL |     unsafe { asm!(".Laaa: nop; ret;", options(noreturn)) }
    |                    ^^^^^
@@ -295,7 +376,7 @@ LL |     unsafe { asm!(".Laaa: nop; ret;", options(noreturn)) }
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:167:24
+  --> $DIR/named-asm-labels.rs:188:24
    |
 LL |         unsafe { asm!(".Lbbb: nop; ret;", options(noreturn)) }
    |                        ^^^^^
@@ -304,7 +385,7 @@ LL |         unsafe { asm!(".Lbbb: nop; ret;", options(noreturn)) }
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:176:15
+  --> $DIR/named-asm-labels.rs:197:15
    |
 LL |         asm!("closure1: nop");
    |               ^^^^^^^^
@@ -313,7 +394,7 @@ LL |         asm!("closure1: nop");
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:180:15
+  --> $DIR/named-asm-labels.rs:201:15
    |
 LL |         asm!("closure2: nop");
    |               ^^^^^^^^
@@ -322,7 +403,7 @@ LL |         asm!("closure2: nop");
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
 error: avoid using named labels in inline assembly
-  --> $DIR/named-asm-labels.rs:190:19
+  --> $DIR/named-asm-labels.rs:211:19
    |
 LL |             asm!("closure3: nop");
    |                   ^^^^^^^^
@@ -330,5 +411,5 @@ LL |             asm!("closure3: nop");
    = help: only local labels of the form `<number>:` should be used in inline asm
    = note: see the asm section of Rust By Example <https://doc.rust-lang.org/nightly/rust-by-example/unsafe/asm.html#labels> for more information
 
-error: aborting due to 35 previous errors; 1 warning emitted
+error: aborting due to 44 previous errors; 1 warning emitted
 

tests/ui/binop/binary-op-suggest-deref.stderr

@@ -270,11 +270,6 @@ note: an implementation of `PartialEq<&&{integer}>` might be missing for `Foo`
    |
 LL |     struct Foo;
    |     ^^^^^^^^^^ must implement `PartialEq<&&{integer}>`
-help: consider annotating `Foo` with `#[derive(PartialEq)]`
-   |
-LL +     #[derive(PartialEq)]
-LL |     struct Foo;
-   |
 
 error[E0277]: can't compare `&String` with `str`
   --> $DIR/binary-op-suggest-deref.rs:69:20

tests/ui/coroutine/gen_block.e2024.stderr

@@ -8,10 +8,10 @@ LL |     let _ = || yield true;
    = help: add `#![feature(coroutines)]` to the crate attributes to enable
 
 error[E0282]: type annotations needed
-  --> $DIR/gen_block.rs:6:17
+  --> $DIR/gen_block.rs:6:13
    |
 LL |     let x = gen {};
-   |                 ^^ cannot infer type
+   |             ^^^^^^ cannot infer type
 
 error: aborting due to 2 previous errors
 

tests/ui/coroutine/sized-yield.stderr

@@ -1,8 +1,8 @@
 error[E0277]: the size for values of type `str` cannot be known at compilation time
-  --> $DIR/sized-yield.rs:8:27
+  --> $DIR/sized-yield.rs:8:19
    |
 LL |       let mut gen = move || {
-   |  ___________________________^
+   |  ___________________^
 LL | |
 LL | |         yield s[..];
 LL | |     };

tests/ui/feature-gates/feature-gate-gen_blocks.e2024.stderr

@@ -35,16 +35,16 @@ LL |     async gen {};
    = help: add `#![feature(gen_blocks)]` to the crate attributes to enable
 
 error[E0282]: type annotations needed
-  --> $DIR/feature-gate-gen_blocks.rs:5:9
+  --> $DIR/feature-gate-gen_blocks.rs:5:5
    |
 LL |     gen {};
-   |         ^^ cannot infer type
+   |     ^^^^^^ cannot infer type
 
 error[E0282]: type annotations needed
-  --> $DIR/feature-gate-gen_blocks.rs:12:15
+  --> $DIR/feature-gate-gen_blocks.rs:12:5
    |
 LL |     async gen {};
-   |               ^^ cannot infer type
+   |     ^^^^^^^^^^^^ cannot infer type
 
 error: aborting due to 6 previous errors
 

tests/ui/half-open-range-patterns/range_pat_interactions2.rs

@@ -8,8 +8,7 @@ fn main() {
     for x in -9 + 1..=(9 - 2) {
         match x as i32 {
             0..=(5+1) => errors_only.push(x),
-            //~^ error: inclusive range with no end
+            //~^ error: expected `)`, found `+`
-            //~| error: expected one of `=>`, `if`, or `|`, found `(`
             1 | -3..0 => first_or.push(x),
             y @ (0..5 | 6) => or_two.push(y),
             y @ 0..const { 5 + 1 } => assert_eq!(y, 5),

tests/ui/half-open-range-patterns/range_pat_interactions2.stderr

@@ -1,17 +1,8 @@
-error[E0586]: inclusive range with no end
+error: expected `)`, found `+`
-  --> $DIR/range_pat_interactions2.rs:10:14
+  --> $DIR/range_pat_interactions2.rs:10:19
    |
 LL |             0..=(5+1) => errors_only.push(x),
-   |              ^^^ help: use `..` instead
+   |                   ^ expected `)`
-   |
-   = note: inclusive ranges must be bounded at the end (`..=b` or `a..=b`)
 
-error: expected one of `=>`, `if`, or `|`, found `(`
+error: aborting due to 1 previous error
-  --> $DIR/range_pat_interactions2.rs:10:17
-   |
-LL |             0..=(5+1) => errors_only.push(x),
-   |                 ^ expected one of `=>`, `if`, or `|`
 
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0586`.

tests/ui/issues/issue-62375.stderr

@@ -11,11 +11,6 @@ note: an implementation of `PartialEq<fn(()) -> A {A::Value}>` might be missing
    |
 LL | enum A {
    | ^^^^^^ must implement `PartialEq<fn(()) -> A {A::Value}>`
-help: consider annotating `A` with `#[derive(PartialEq)]`
-   |
-LL + #[derive(PartialEq)]
-LL | enum A {
-   |
 help: use parentheses to construct this tuple variant
    |
 LL |     a == A::Value(/* () */);

tests/ui/macros/issue-118786.stderr

@@ -6,8 +6,8 @@ LL |         macro_rules! $macro_name {
    |
 help: change the delimiters to curly braces
    |
-LL |         macro_rules! {} {
+LL |         macro_rules! {$macro_name} {
-   |                      ~          +
+   |                      +           +
 help: add a semicolon
    |
 LL |         macro_rules! $macro_name; {

tests/ui/parser/issues/issue-68091-unicode-ident-after-if.stderr

@@ -1,10 +1,10 @@
 error: missing condition for `if` expression
-  --> $DIR/issue-68091-unicode-ident-after-if.rs:3:14
+  --> $DIR/issue-68091-unicode-ident-after-if.rs:3:13
    |
 LL |         $($c)ö* {}
-   |              ^  - if this block is the condition of the `if` expression, then it must be followed by another block
+   |             ^   - if this block is the condition of the `if` expression, then it must be followed by another block
-   |              |
+   |             |
-   |              expected condition here
+   |             expected condition here
 
 error: aborting due to 1 previous error
 

tests/ui/parser/issues/issue-68092-unicode-ident-after-incomplete-expr.stderr

@@ -1,8 +1,8 @@
 error: macro expansion ends with an incomplete expression: expected expression
-  --> $DIR/issue-68092-unicode-ident-after-incomplete-expr.rs:3:14
+  --> $DIR/issue-68092-unicode-ident-after-incomplete-expr.rs:3:13
    |
 LL |         $($c)ö*
-   |              ^ expected expression
+   |             ^ expected expression
 
 error: aborting due to 1 previous error
 

tests/ui/parser/pat-recover-ranges.rs

@@ -0,0 +1,19 @@
+fn main() {
+    match -1 {
+        0..=1 => (),
+        0..=(1) => (),
+        //~^ error: range pattern bounds cannot have parentheses
+        (-12)..=4 => (),
+        //~^ error: range pattern bounds cannot have parentheses
+        (0)..=(-4) => (),
+        //~^ error: range pattern bounds cannot have parentheses
+        //~| error: range pattern bounds cannot have parentheses
+    };
+}
+
+macro_rules! m {
+    ($pat:pat) => {};
+    (($s:literal)..($e:literal)) => {};
+}
+
+m!((7)..(7));

tests/ui/parser/pat-recover-ranges.stderr

@@ -0,0 +1,50 @@
+error: range pattern bounds cannot have parentheses
+  --> $DIR/pat-recover-ranges.rs:4:13
+   |
+LL |         0..=(1) => (),
+   |             ^ ^
+   |
+help: remove these parentheses
+   |
+LL -         0..=(1) => (),
+LL +         0..=1 => (),
+   |
+
+error: range pattern bounds cannot have parentheses
+  --> $DIR/pat-recover-ranges.rs:6:9
+   |
+LL |         (-12)..=4 => (),
+   |         ^   ^
+   |
+help: remove these parentheses
+   |
+LL -         (-12)..=4 => (),
+LL +         -12..=4 => (),
+   |
+
+error: range pattern bounds cannot have parentheses
+  --> $DIR/pat-recover-ranges.rs:8:9
+   |
+LL |         (0)..=(-4) => (),
+   |         ^ ^
+   |
+help: remove these parentheses
+   |
+LL -         (0)..=(-4) => (),
+LL +         0..=(-4) => (),
+   |
+
+error: range pattern bounds cannot have parentheses
+  --> $DIR/pat-recover-ranges.rs:8:15
+   |
+LL |         (0)..=(-4) => (),
+   |               ^  ^
+   |
+help: remove these parentheses
+   |
+LL -         (0)..=(-4) => (),
+LL +         (0)..=-4 => (),
+   |
+
+error: aborting due to 4 previous errors
+

tests/ui/proc-macro/capture-macro-rules-invoke.stdout

@@ -271,7 +271,7 @@ PRINT-BANG INPUT (DEBUG): TokenStream [
                 span: $DIR/capture-macro-rules-invoke.rs:47:19: 47:20 (#0),
             },
         ],
-        span: $DIR/capture-macro-rules-invoke.rs:47:13: 47:22 (#0),
+        span: $DIR/capture-macro-rules-invoke.rs:15:60: 15:63 (#0),
     },
     Punct {
         ch: ',',

tests/ui/proc-macro/expand-expr.rs

@@ -37,7 +37,7 @@ expand_expr_is!("hello", stringify!(hello));
 expand_expr_is!("10 + 20", stringify!(10 + 20));
 
 macro_rules! echo_tts {
-    ($($t:tt)*) => { $($t)* };  //~ ERROR: expected expression, found `$`
+    ($($t:tt)*) => { $($t)* };
 }
 
 macro_rules! echo_lit {
@@ -109,7 +109,7 @@ expand_expr_fail!("string"; hello); //~ ERROR: expected one of `.`, `?`, or an o
 
 // Invalid expressions produce errors in addition to returning `Err(())`.
 expand_expr_fail!($); //~ ERROR: expected expression, found `$`
-expand_expr_fail!(echo_tts!($));
+expand_expr_fail!(echo_tts!($)); //~ ERROR: expected expression, found `$`
 expand_expr_fail!(echo_pm!($)); //~ ERROR: expected expression, found `$`
 
 // We get errors reported and recover during macro expansion if the macro

tests/ui/proc-macro/expand-expr.stderr

@@ -11,10 +11,10 @@ LL | expand_expr_fail!($);
    |                   ^ expected expression
 
 error: expected expression, found `$`
-  --> $DIR/expand-expr.rs:40:23
+  --> $DIR/expand-expr.rs:112:29
    |
-LL |     ($($t:tt)*) => { $($t)* };
+LL | expand_expr_fail!(echo_tts!($));
-   |                       ^^^^ expected expression
+   |                             ^ expected expression
 
 error: expected expression, found `$`
   --> $DIR/expand-expr.rs:113:28

tests/ui/rfcs/rfc-2632-const-trait-impl/const-trait-bounds-trait-objects.rs

@@ -1,4 +1,4 @@
-#![feature(const_trait_impl)]
+#![feature(const_trait_impl, effects)]
 // edition: 2021
 
 #[const_trait]
@@ -6,4 +6,12 @@ trait Trait {}
 
 fn main() {
     let _: &dyn const Trait; //~ ERROR const trait bounds are not allowed in trait object types
+    let _: &dyn ~const Trait; //~ ERROR `~const` is not allowed here
 }
+
+// Regression test for issue #119525.
+trait NonConst {}
+const fn handle(_: &dyn const NonConst) {}
+//~^ ERROR const trait bounds are not allowed in trait object types
+const fn take(_: &dyn ~const NonConst) {}
+//~^ ERROR `~const` is not allowed here

tests/ui/rfcs/rfc-2632-const-trait-impl/const-trait-bounds-trait-objects.stderr

@@ -4,5 +4,27 @@ error: const trait bounds are not allowed in trait object types
 LL |     let _: &dyn const Trait;
    |                 ^^^^^^^^^^^
 
-error: aborting due to 1 previous error
+error: `~const` is not allowed here
+  --> $DIR/const-trait-bounds-trait-objects.rs:9:17
+   |
+LL |     let _: &dyn ~const Trait;
+   |                 ^^^^^^
+   |
+   = note: trait objects cannot have `~const` trait bounds
+
+error: const trait bounds are not allowed in trait object types
+  --> $DIR/const-trait-bounds-trait-objects.rs:14:25
+   |
+LL | const fn handle(_: &dyn const NonConst) {}
+   |                         ^^^^^^^^^^^^^^
+
+error: `~const` is not allowed here
+  --> $DIR/const-trait-bounds-trait-objects.rs:16:23
+   |
+LL | const fn take(_: &dyn ~const NonConst) {}
+   |                       ^^^^^^
+   |
+   = note: trait objects cannot have `~const` trait bounds
+
+error: aborting due to 4 previous errors
 

tests/ui/sanitize/badfree.rs

@@ -5,7 +5,7 @@
 // compile-flags: -Z sanitizer=address -O
 //
 // run-fail
-// error-pattern: AddressSanitizer: SEGV
+// regex-error-pattern: AddressSanitizer: (SEGV|attempting free on address which was not malloc)
 
 use std::ffi::c_void;