diff options
48 files changed, 347 insertions, 169 deletions
diff --git a/compiler/rustc_const_eval/src/interpret/eval_context.rs b/compiler/rustc_const_eval/src/interpret/eval_context.rs index 068d6369f87..41fc8d47cd3 100644 --- a/compiler/rustc_const_eval/src/interpret/eval_context.rs +++ b/compiler/rustc_const_eval/src/interpret/eval_context.rs @@ -96,7 +96,7 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> { /// This inherent method takes priority over the trait method with the same name in LayoutOf, /// and allows wrapping the actual [LayoutOf::layout_of] with a tracing span. /// See [LayoutOf::layout_of] for the original documentation. - #[inline] + #[inline(always)] pub fn layout_of( &self, ty: Ty<'tcx>, diff --git a/compiler/rustc_const_eval/src/interpret/machine.rs b/compiler/rustc_const_eval/src/interpret/machine.rs index 844c19fea2d..d150ed69250 100644 --- a/compiler/rustc_const_eval/src/interpret/machine.rs +++ b/compiler/rustc_const_eval/src/interpret/machine.rs @@ -18,8 +18,8 @@ use rustc_target::callconv::FnAbi; use super::{ AllocBytes, AllocId, AllocKind, AllocRange, Allocation, CTFE_ALLOC_SALT, ConstAllocation, - CtfeProvenance, FnArg, Frame, ImmTy, InterpCx, InterpResult, MPlaceTy, MemoryKind, - Misalignment, OpTy, PlaceTy, Pointer, Provenance, RangeSet, interp_ok, throw_unsup, + CtfeProvenance, EnteredTraceSpan, FnArg, Frame, ImmTy, InterpCx, InterpResult, MPlaceTy, + MemoryKind, Misalignment, OpTy, PlaceTy, Pointer, Provenance, RangeSet, interp_ok, throw_unsup, }; /// Data returned by [`Machine::after_stack_pop`], and consumed by @@ -147,12 +147,6 @@ pub trait Machine<'tcx>: Sized { /// already been checked before. const ALL_CONSTS_ARE_PRECHECKED: bool = true; - /// Determines whether rustc_const_eval functions that make use of the [Machine] should make - /// tracing calls (to the `tracing` library). By default this is `false`, meaning the tracing - /// calls will supposedly be optimized out. This flag is set to `true` inside Miri, to allow - /// tracing the interpretation steps, among other things. - const TRACING_ENABLED: bool = false; - /// Whether memory accesses should be alignment-checked. fn enforce_alignment(ecx: &InterpCx<'tcx, Self>) -> bool; @@ -634,6 +628,17 @@ pub trait Machine<'tcx>: Sized { /// Compute the value passed to the constructors of the `AllocBytes` type for /// abstract machine allocations. fn get_default_alloc_params(&self) -> <Self::Bytes as AllocBytes>::AllocParams; + + /// Allows enabling/disabling tracing calls from within `rustc_const_eval` at compile time, by + /// delegating the entering of [tracing::Span]s to implementors of the [Machine] trait. The + /// default implementation corresponds to tracing being disabled, meaning the tracing calls will + /// supposedly be optimized out completely. To enable tracing, override this trait method and + /// return `span.entered()`. Also see [crate::enter_trace_span]. + #[must_use] + #[inline(always)] + fn enter_trace_span(_span: impl FnOnce() -> tracing::Span) -> impl EnteredTraceSpan { + () + } } /// A lot of the flexibility above is just needed for `Miri`, but all "compile-time" machines diff --git a/compiler/rustc_const_eval/src/interpret/mod.rs b/compiler/rustc_const_eval/src/interpret/mod.rs index 8303f891f98..2fc372dd019 100644 --- a/compiler/rustc_const_eval/src/interpret/mod.rs +++ b/compiler/rustc_const_eval/src/interpret/mod.rs @@ -37,6 +37,7 @@ pub use self::place::{MPlaceTy, MemPlaceMeta, PlaceTy, Writeable}; use self::place::{MemPlace, Place}; pub use self::projection::{OffsetMode, Projectable}; pub use self::stack::{Frame, FrameInfo, LocalState, ReturnContinuation, StackPopInfo}; +pub use self::util::EnteredTraceSpan; pub(crate) use self::util::create_static_alloc; pub use self::validity::{CtfeValidationMode, RangeSet, RefTracking}; pub use self::visitor::ValueVisitor; diff --git a/compiler/rustc_const_eval/src/interpret/util.rs b/compiler/rustc_const_eval/src/interpret/util.rs index 99add01f95c..72650d545c3 100644 --- a/compiler/rustc_const_eval/src/interpret/util.rs +++ b/compiler/rustc_const_eval/src/interpret/util.rs @@ -46,21 +46,20 @@ pub(crate) fn create_static_alloc<'tcx>( interp_ok(ecx.ptr_to_mplace(Pointer::from(alloc_id).into(), layout)) } -/// This struct is needed to enforce `#[must_use]` on [tracing::span::EnteredSpan] -/// while wrapping them in an `Option`. -#[must_use] -pub enum MaybeEnteredSpan { - Some(tracing::span::EnteredSpan), - None, -} +/// A marker trait returned by [crate::interpret::Machine::enter_trace_span], identifying either a +/// real [tracing::span::EnteredSpan] in case tracing is enabled, or the dummy type `()` when +/// tracing is disabled. +pub trait EnteredTraceSpan {} +impl EnteredTraceSpan for () {} +impl EnteredTraceSpan for tracing::span::EnteredSpan {} +/// Shortand for calling [crate::interpret::Machine::enter_trace_span] on a [tracing::info_span]. +/// This is supposed to be compiled out when [crate::interpret::Machine::enter_trace_span] has the +/// default implementation (i.e. when it does not actually enter the span but instead returns `()`). +/// Note: the result of this macro **must be used** because the span is exited when it's dropped. #[macro_export] macro_rules! enter_trace_span { ($machine:ident, $($tt:tt)*) => { - if $machine::TRACING_ENABLED { - $crate::interpret::util::MaybeEnteredSpan::Some(tracing::info_span!($($tt)*).entered()) - } else { - $crate::interpret::util::MaybeEnteredSpan::None - } + $machine::enter_trace_span(|| tracing::info_span!($($tt)*)) } } diff --git a/compiler/rustc_resolve/src/late/diagnostics.rs b/compiler/rustc_resolve/src/late/diagnostics.rs index fa04c8bc604..e015eb7a636 100644 --- a/compiler/rustc_resolve/src/late/diagnostics.rs +++ b/compiler/rustc_resolve/src/late/diagnostics.rs @@ -1183,15 +1183,23 @@ impl<'ast, 'ra, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> { _ => "`self` value is a keyword only available in methods with a `self` parameter", }, ); + + // using `let self` is wrong even if we're not in an associated method or if we're in a macro expansion. + // So, we should return early if we're in a pattern, see issue #143134. + if matches!(source, PathSource::Pat) { + return true; + } + let is_assoc_fn = self.self_type_is_available(); let self_from_macro = "a `self` parameter, but a macro invocation can only \ access identifiers it receives from parameters"; - if let Some((fn_kind, span)) = &self.diag_metadata.current_function { + if let Some((fn_kind, fn_span)) = &self.diag_metadata.current_function { // The current function has a `self` parameter, but we were unable to resolve // a reference to `self`. This can only happen if the `self` identifier we - // are resolving came from a different hygiene context. + // are resolving came from a different hygiene context or a variable binding. + // But variable binding error is returned early above. if fn_kind.decl().inputs.get(0).is_some_and(|p| p.is_self()) { - err.span_label(*span, format!("this function has {self_from_macro}")); + err.span_label(*fn_span, format!("this function has {self_from_macro}")); } else { let doesnt = if is_assoc_fn { let (span, sugg) = fn_kind @@ -1204,7 +1212,7 @@ impl<'ast, 'ra, 'tcx> LateResolutionVisitor<'_, 'ast, 'ra, 'tcx> { // This avoids placing the suggestion into the visibility specifier. let span = fn_kind .ident() - .map_or(*span, |ident| span.with_lo(ident.span.hi())); + .map_or(*fn_span, |ident| fn_span.with_lo(ident.span.hi())); ( self.r .tcx diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/ambiguity.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/ambiguity.rs index 39f115ce0cd..a8ba1baf6b9 100644 --- a/compiler/rustc_trait_selection/src/error_reporting/traits/ambiguity.rs +++ b/compiler/rustc_trait_selection/src/error_reporting/traits/ambiguity.rs @@ -4,7 +4,7 @@ use rustc_errors::{Applicability, Diag, E0283, E0284, E0790, MultiSpan, struct_s use rustc_hir as hir; use rustc_hir::LangItem; use rustc_hir::def::{DefKind, Res}; -use rustc_hir::def_id::DefId; +use rustc_hir::def_id::{CRATE_DEF_ID, DefId}; use rustc_hir::intravisit::Visitor as _; use rustc_infer::infer::{BoundRegionConversionTime, InferCtxt}; use rustc_infer::traits::util::elaborate; @@ -128,19 +128,26 @@ pub fn compute_applicable_impls_for_diagnostics<'tcx>( }, ); - let predicates = - tcx.predicates_of(obligation.cause.body_id.to_def_id()).instantiate_identity(tcx); - for (pred, span) in elaborate(tcx, predicates.into_iter()) { - let kind = pred.kind(); - if let ty::ClauseKind::Trait(trait_pred) = kind.skip_binder() - && param_env_candidate_may_apply(kind.rebind(trait_pred)) - { - if kind.rebind(trait_pred.trait_ref) - == ty::Binder::dummy(ty::TraitRef::identity(tcx, trait_pred.def_id())) + // If our `body_id` has been set (and isn't just from a dummy obligation cause), + // then try to look for a param-env clause that would apply. The way we compute + // this is somewhat manual, since we need the spans, so we elaborate this directly + // from `predicates_of` rather than actually looking at the param-env which + // otherwise would be more appropriate. + let body_id = obligation.cause.body_id; + if body_id != CRATE_DEF_ID { + let predicates = tcx.predicates_of(body_id.to_def_id()).instantiate_identity(tcx); + for (pred, span) in elaborate(tcx, predicates.into_iter()) { + let kind = pred.kind(); + if let ty::ClauseKind::Trait(trait_pred) = kind.skip_binder() + && param_env_candidate_may_apply(kind.rebind(trait_pred)) { - ambiguities.push(CandidateSource::ParamEnv(tcx.def_span(trait_pred.def_id()))) - } else { - ambiguities.push(CandidateSource::ParamEnv(span)) + if kind.rebind(trait_pred.trait_ref) + == ty::Binder::dummy(ty::TraitRef::identity(tcx, trait_pred.def_id())) + { + ambiguities.push(CandidateSource::ParamEnv(tcx.def_span(trait_pred.def_id()))) + } else { + ambiguities.push(CandidateSource::ParamEnv(span)) + } } } } diff --git a/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs b/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs index e801ec358fa..3e64573aa03 100644 --- a/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs +++ b/compiler/rustc_trait_selection/src/error_reporting/traits/suggestions.rs @@ -1581,12 +1581,15 @@ impl<'a, 'tcx> TypeErrCtxt<'a, 'tcx> { 'outer: loop { while let hir::ExprKind::AddrOf(_, _, borrowed) = expr.kind { count += 1; - let span = if expr.span.eq_ctxt(borrowed.span) { - expr.span.until(borrowed.span) - } else { - expr.span.with_hi(expr.span.lo() + BytePos(1)) - }; + let span = + if let Some(borrowed_span) = borrowed.span.find_ancestor_inside(expr.span) { + expr.span.until(borrowed_span) + } else { + break 'outer; + }; + // Double check that the span we extracted actually corresponds to a borrow, + // rather than some macro garbage. match self.tcx.sess.source_map().span_to_snippet(span) { Ok(snippet) if snippet.starts_with("&") => {} _ => break 'outer, diff --git a/library/core/src/alloc/layout.rs b/library/core/src/alloc/layout.rs index 380f67f91f9..49275975f04 100644 --- a/library/core/src/alloc/layout.rs +++ b/library/core/src/alloc/layout.rs @@ -61,8 +61,8 @@ impl Layout { /// * `align` must be a power of two, /// /// * `size`, when rounded up to the nearest multiple of `align`, - /// must not overflow `isize` (i.e., the rounded value must be - /// less than or equal to `isize::MAX`). + /// must not overflow `isize` (i.e., the rounded value must be + /// less than or equal to `isize::MAX`). #[stable(feature = "alloc_layout", since = "1.28.0")] #[rustc_const_stable(feature = "const_alloc_layout_size_align", since = "1.50.0")] #[inline] diff --git a/library/core/src/cell.rs b/library/core/src/cell.rs index f7ea1f37a39..c53a2b2beb4 100644 --- a/library/core/src/cell.rs +++ b/library/core/src/cell.rs @@ -1940,21 +1940,21 @@ impl<T: ?Sized + fmt::Display> fmt::Display for RefMut<'_, T> { /// The precise Rust aliasing rules are somewhat in flux, but the main points are not contentious: /// /// - If you create a safe reference with lifetime `'a` (either a `&T` or `&mut T` reference), then -/// you must not access the data in any way that contradicts that reference for the remainder of -/// `'a`. For example, this means that if you take the `*mut T` from an `UnsafeCell<T>` and cast it -/// to an `&T`, then the data in `T` must remain immutable (modulo any `UnsafeCell` data found -/// within `T`, of course) until that reference's lifetime expires. Similarly, if you create a `&mut -/// T` reference that is released to safe code, then you must not access the data within the -/// `UnsafeCell` until that reference expires. +/// you must not access the data in any way that contradicts that reference for the remainder of +/// `'a`. For example, this means that if you take the `*mut T` from an `UnsafeCell<T>` and cast it +/// to an `&T`, then the data in `T` must remain immutable (modulo any `UnsafeCell` data found +/// within `T`, of course) until that reference's lifetime expires. Similarly, if you create a +/// `&mut T` reference that is released to safe code, then you must not access the data within the +/// `UnsafeCell` until that reference expires. /// /// - For both `&T` without `UnsafeCell<_>` and `&mut T`, you must also not deallocate the data -/// until the reference expires. As a special exception, given an `&T`, any part of it that is -/// inside an `UnsafeCell<_>` may be deallocated during the lifetime of the reference, after the -/// last time the reference is used (dereferenced or reborrowed). Since you cannot deallocate a part -/// of what a reference points to, this means the memory an `&T` points to can be deallocated only if -/// *every part of it* (including padding) is inside an `UnsafeCell`. +/// until the reference expires. As a special exception, given an `&T`, any part of it that is +/// inside an `UnsafeCell<_>` may be deallocated during the lifetime of the reference, after the +/// last time the reference is used (dereferenced or reborrowed). Since you cannot deallocate a part +/// of what a reference points to, this means the memory an `&T` points to can be deallocated only if +/// *every part of it* (including padding) is inside an `UnsafeCell`. /// -/// However, whenever a `&UnsafeCell<T>` is constructed or dereferenced, it must still point to +/// However, whenever a `&UnsafeCell<T>` is constructed or dereferenced, it must still point to /// live memory and the compiler is allowed to insert spurious reads if it can prove that this /// memory has not yet been deallocated. /// @@ -1962,10 +1962,10 @@ impl<T: ?Sized + fmt::Display> fmt::Display for RefMut<'_, T> { /// for single-threaded code: /// /// 1. A `&T` reference can be released to safe code and there it can co-exist with other `&T` -/// references, but not with a `&mut T` +/// references, but not with a `&mut T` /// /// 2. A `&mut T` reference may be released to safe code provided neither other `&mut T` nor `&T` -/// co-exist with it. A `&mut T` must always be unique. +/// co-exist with it. A `&mut T` must always be unique. /// /// Note that whilst mutating the contents of an `&UnsafeCell<T>` (even while other /// `&UnsafeCell<T>` references alias the cell) is diff --git a/library/core/src/error.rs b/library/core/src/error.rs index 7f5c6ac42bc..88e633c9eef 100644 --- a/library/core/src/error.rs +++ b/library/core/src/error.rs @@ -447,28 +447,28 @@ where /// separated by API boundaries: /// /// * Consumer - the consumer requests objects using a Request instance; eg a crate that offers -/// fancy `Error`/`Result` reporting to users wants to request a Backtrace from a given `dyn Error`. +/// fancy `Error`/`Result` reporting to users wants to request a Backtrace from a given `dyn Error`. /// /// * Producer - the producer provides objects when requested via Request; eg. a library with an -/// an `Error` implementation that automatically captures backtraces at the time instances are -/// created. +/// an `Error` implementation that automatically captures backtraces at the time instances are +/// created. /// /// The consumer only needs to know where to submit their request and are expected to handle the /// request not being fulfilled by the use of `Option<T>` in the responses offered by the producer. /// /// * A Producer initializes the value of one of its fields of a specific type. (or is otherwise -/// prepared to generate a value requested). eg, `backtrace::Backtrace` or -/// `std::backtrace::Backtrace` +/// prepared to generate a value requested). eg, `backtrace::Backtrace` or +/// `std::backtrace::Backtrace` /// * A Consumer requests an object of a specific type (say `std::backtrace::Backtrace`). In the -/// case of a `dyn Error` trait object (the Producer), there are functions called `request_ref` and -/// `request_value` to simplify obtaining an `Option<T>` for a given type. +/// case of a `dyn Error` trait object (the Producer), there are functions called `request_ref` and +/// `request_value` to simplify obtaining an `Option<T>` for a given type. /// * The Producer, when requested, populates the given Request object which is given as a mutable -/// reference. +/// reference. /// * The Consumer extracts a value or reference to the requested type from the `Request` object -/// wrapped in an `Option<T>`; in the case of `dyn Error` the aforementioned `request_ref` and ` -/// request_value` methods mean that `dyn Error` users don't have to deal with the `Request` type at -/// all (but `Error` implementors do). The `None` case of the `Option` suggests only that the -/// Producer cannot currently offer an instance of the requested type, not it can't or never will. +/// wrapped in an `Option<T>`; in the case of `dyn Error` the aforementioned `request_ref` and ` +/// request_value` methods mean that `dyn Error` users don't have to deal with the `Request` type at +/// all (but `Error` implementors do). The `None` case of the `Option` suggests only that the +/// Producer cannot currently offer an instance of the requested type, not it can't or never will. /// /// # Examples /// diff --git a/library/core/src/fmt/mod.rs b/library/core/src/fmt/mod.rs index 5e50eacec6e..228a331e1da 100644 --- a/library/core/src/fmt/mod.rs +++ b/library/core/src/fmt/mod.rs @@ -353,10 +353,10 @@ impl FormattingOptions { /// Sets or removes the sign (the `+` or the `-` flag). /// /// - `+`: This is intended for numeric types and indicates that the sign - /// should always be printed. By default only the negative sign of signed - /// values is printed, and the sign of positive or unsigned values is - /// omitted. This flag indicates that the correct sign (+ or -) should - /// always be printed. + /// should always be printed. By default only the negative sign of signed + /// values is printed, and the sign of positive or unsigned values is + /// omitted. This flag indicates that the correct sign (+ or -) should + /// always be printed. /// - `-`: Currently not used #[unstable(feature = "formatting_options", issue = "118117")] pub fn sign(&mut self, sign: Option<Sign>) -> &mut Self { @@ -443,9 +443,9 @@ impl FormattingOptions { /// Sets or removes the precision. /// /// - For non-numeric types, this can be considered a “maximum width”. If - /// the resulting string is longer than this width, then it is truncated - /// down to this many characters and that truncated value is emitted with - /// proper fill, alignment and width if those parameters are set. + /// the resulting string is longer than this width, then it is truncated + /// down to this many characters and that truncated value is emitted with + /// proper fill, alignment and width if those parameters are set. /// - For integral types, this is ignored. /// - For floating-point types, this indicates how many digits after the /// decimal point should be printed. diff --git a/library/core/src/marker.rs b/library/core/src/marker.rs index 2aeb0b0c31e..1c0629f259d 100644 --- a/library/core/src/marker.rs +++ b/library/core/src/marker.rs @@ -211,8 +211,8 @@ pub trait PointeeSized { /// - The type is sized. /// - The type outlives `'a`. /// - Structs `Foo<..., T1, ..., Tn, ...>` implement `Unsize<Foo<..., U1, ..., Un, ...>>` -/// where any number of (type and const) parameters may be changed if all of these conditions -/// are met: +/// where any number of (type and const) parameters may be changed if all of these conditions +/// are met: /// - Only the last field of `Foo` has a type involving the parameters `T1`, ..., `Tn`. /// - All other parameters of the struct are equal. /// - `Field<T1, ..., Tn>: Unsize<Field<U1, ..., Un>>`, where `Field<...>` stands for the actual diff --git a/library/core/src/ops/drop.rs b/library/core/src/ops/drop.rs index 5d040804a8d..bbef7023207 100644 --- a/library/core/src/ops/drop.rs +++ b/library/core/src/ops/drop.rs @@ -11,7 +11,7 @@ /// This destructor consists of two components: /// - A call to `Drop::drop` for that value, if this special `Drop` trait is implemented for its type. /// - The automatically generated "drop glue" which recursively calls the destructors -/// of all the fields of this value. +/// of all the fields of this value. /// /// As Rust automatically calls the destructors of all contained fields, /// you don't have to implement `Drop` in most cases. But there are some cases where diff --git a/library/core/src/option.rs b/library/core/src/option.rs index 38eb2662b34..4ede273feda 100644 --- a/library/core/src/option.rs +++ b/library/core/src/option.rs @@ -125,6 +125,7 @@ //! `Option::<T>::None` //! - `transmute::<_, [u8; size_of::<T>()]>(Option::<T>::None)` is sound and produces //! `[0u8; size_of::<T>()]` +//! //! These cases are identified by the second column: //! //! | `T` | Transmuting between `[0u8; size_of::<T>()]` and `Option::<T>::None` sound? | diff --git a/library/core/src/pin.rs b/library/core/src/pin.rs index 3ca6feb679b..14bf7ba9015 100644 --- a/library/core/src/pin.rs +++ b/library/core/src/pin.rs @@ -137,10 +137,10 @@ //! 2. An operation causes the value to depend on its own address not changing //! * e.g. calling [`poll`] for the first time on the produced [`Future`] //! 3. Further pieces of the safe interface of the type use internal [`unsafe`] operations which -//! assume that the address of the value is stable +//! assume that the address of the value is stable //! * e.g. subsequent calls to [`poll`] //! 4. Before the value is invalidated (e.g. deallocated), it is *dropped*, giving it a chance to -//! notify anything with pointers to itself that those pointers will be invalidated +//! notify anything with pointers to itself that those pointers will be invalidated //! * e.g. [`drop`]ping the [`Future`] [^pin-drop-future] //! //! There are two possible ways to ensure the invariants required for 2. and 3. above (which @@ -148,8 +148,8 @@ //! //! 1. Have the value detect when it is moved and update all the pointers that point to itself. //! 2. Guarantee that the address of the value does not change (and that memory is not re-used -//! for anything else) during the time that the pointers to it are expected to be valid to -//! dereference. +//! for anything else) during the time that the pointers to it are expected to be valid to +//! dereference. //! //! Since, as we discussed, Rust can move values without notifying them that they have moved, the //! first option is ruled out. @@ -160,11 +160,11 @@ //! be able to enforce this invariant in Rust: //! //! 1. Offer a wholly `unsafe` API to interact with the object, thus requiring every caller to -//! uphold the invariant themselves +//! uphold the invariant themselves //! 2. Store the value that must not be moved behind a carefully managed pointer internal to -//! the object +//! the object //! 3. Leverage the type system to encode and enforce this invariant by presenting a restricted -//! API surface to interact with *any* object that requires these invariants +//! API surface to interact with *any* object that requires these invariants //! //! The first option is quite obviously undesirable, as the [`unsafe`]ty of the interface will //! become viral throughout all code that interacts with the object. @@ -530,7 +530,7 @@ //! but it also implies that, //! //! 2. The memory location that stores the value must not get invalidated or otherwise repurposed -//! during the lifespan of the pinned value until its [`drop`] returns or panics +//! during the lifespan of the pinned value until its [`drop`] returns or panics //! //! This point is subtle but required for intrusive data structures to be implemented soundly. //! diff --git a/src/bootstrap/configure.py b/src/bootstrap/configure.py index c077555b906..b05a5cc8b81 100755 --- a/src/bootstrap/configure.py +++ b/src/bootstrap/configure.py @@ -739,19 +739,29 @@ def configure_file(sections, top_level_keys, targets, config): def write_uncommented(target, f): + """Writes each block in 'target' that is not composed entirely of comments to 'f'. + + A block is a sequence of non-empty lines separated by empty lines. + """ block = [] - is_comment = True + + def flush(last): + # If the block is entirely made of comments, ignore it + entire_block_comments = all(ln.startswith("#") or ln == "" for ln in block) + if not entire_block_comments and len(block) > 0: + for line in block: + f.write(line + "\n") + # Required to output a newline before the start of a new section + if last: + f.write("\n") + block.clear() for line in target: block.append(line) if len(line) == 0: - if not is_comment: - for ln in block: - f.write(ln + "\n") - block = [] - is_comment = True - continue - is_comment = is_comment and line.startswith("#") + flush(last=False) + + flush(last=True) return f diff --git a/src/bootstrap/src/core/build_steps/compile.rs b/src/bootstrap/src/core/build_steps/compile.rs index ca74771bb6e..0587d21ecc2 100644 --- a/src/bootstrap/src/core/build_steps/compile.rs +++ b/src/bootstrap/src/core/build_steps/compile.rs @@ -2057,14 +2057,20 @@ impl Step for Assemble { trace!("llvm-bitcode-linker enabled, installing"); let llvm_bitcode_linker = builder.ensure(crate::core::build_steps::tool::LlvmBitcodeLinker { - compiler, + build_compiler: compiler, target: target_compiler.host, - extra_features: vec![], }); + + // Copy the llvm-bitcode-linker to the self-contained binary directory + let bindir_self_contained = builder + .sysroot(compiler) + .join(format!("lib/rustlib/{}/bin/self-contained", compiler.host)); let tool_exe = exe("llvm-bitcode-linker", target_compiler.host); + + t!(fs::create_dir_all(&bindir_self_contained)); builder.copy_link( &llvm_bitcode_linker.tool_path, - &libdir_bin.join(tool_exe), + &bindir_self_contained.join(tool_exe), FileType::Executable, ); } diff --git a/src/bootstrap/src/core/build_steps/dist.rs b/src/bootstrap/src/core/build_steps/dist.rs index 25b7e5a1b5d..8b2d65ace50 100644 --- a/src/bootstrap/src/core/build_steps/dist.rs +++ b/src/bootstrap/src/core/build_steps/dist.rs @@ -2375,7 +2375,7 @@ impl Step for LlvmBitcodeLinker { builder.ensure(compile::Rustc::new(compiler, target)); let llbc_linker = - builder.ensure(tool::LlvmBitcodeLinker { compiler, target, extra_features: vec![] }); + builder.ensure(tool::LlvmBitcodeLinker { build_compiler: compiler, target }); let self_contained_bin_dir = format!("lib/rustlib/{}/bin/self-contained", target.triple); diff --git a/src/bootstrap/src/core/build_steps/tool.rs b/src/bootstrap/src/core/build_steps/tool.rs index b05b34b9b22..5de1b472d79 100644 --- a/src/bootstrap/src/core/build_steps/tool.rs +++ b/src/bootstrap/src/core/build_steps/tool.rs @@ -910,6 +910,13 @@ impl Step for LldWrapper { tool_result } + + fn metadata(&self) -> Option<StepMetadata> { + Some( + StepMetadata::build("LldWrapper", self.target_compiler.host) + .built_by(self.build_compiler), + ) + } } #[derive(Debug, Clone, Hash, PartialEq, Eq)] @@ -1014,9 +1021,8 @@ impl Step for RustAnalyzerProcMacroSrv { #[derive(Debug, Clone, Hash, PartialEq, Eq)] pub struct LlvmBitcodeLinker { - pub compiler: Compiler, + pub build_compiler: Compiler, pub target: TargetSelection, - pub extra_features: Vec<String>, } impl Step for LlvmBitcodeLinker { @@ -1032,8 +1038,9 @@ impl Step for LlvmBitcodeLinker { fn make_run(run: RunConfig<'_>) { run.builder.ensure(LlvmBitcodeLinker { - compiler: run.builder.compiler(run.builder.top_stage, run.builder.config.host_target), - extra_features: Vec::new(), + build_compiler: run + .builder + .compiler(run.builder.top_stage, run.builder.config.host_target), target: run.target, }); } @@ -1043,35 +1050,22 @@ impl Step for LlvmBitcodeLinker { instrument(level = "debug", name = "LlvmBitcodeLinker::run", skip_all) )] fn run(self, builder: &Builder<'_>) -> ToolBuildResult { - let tool_result = builder.ensure(ToolBuild { - compiler: self.compiler, + builder.ensure(ToolBuild { + compiler: self.build_compiler, target: self.target, tool: "llvm-bitcode-linker", mode: Mode::ToolRustc, path: "src/tools/llvm-bitcode-linker", source_type: SourceType::InTree, - extra_features: self.extra_features, + extra_features: vec![], allow_features: "", cargo_args: Vec::new(), artifact_kind: ToolArtifactKind::Binary, - }); + }) + } - if tool_result.target_compiler.stage > 0 { - let bindir_self_contained = builder - .sysroot(tool_result.target_compiler) - .join(format!("lib/rustlib/{}/bin/self-contained", self.target.triple)); - t!(fs::create_dir_all(&bindir_self_contained)); - let bin_destination = bindir_self_contained - .join(exe("llvm-bitcode-linker", tool_result.target_compiler.host)); - builder.copy_link(&tool_result.tool_path, &bin_destination, FileType::Executable); - ToolBuildResult { - tool_path: bin_destination, - build_compiler: tool_result.build_compiler, - target_compiler: tool_result.target_compiler, - } - } else { - tool_result - } + fn metadata(&self) -> Option<StepMetadata> { + Some(StepMetadata::build("LlvmBitcodeLinker", self.target).built_by(self.build_compiler)) } } diff --git a/src/bootstrap/src/core/builder/tests.rs b/src/bootstrap/src/core/builder/tests.rs index 1d5690a8197..bbcb58fca14 100644 --- a/src/bootstrap/src/core/builder/tests.rs +++ b/src/bootstrap/src/core/builder/tests.rs @@ -758,6 +758,58 @@ mod snapshot { } #[test] + fn build_compiler_tools() { + let ctx = TestCtx::new(); + insta::assert_snapshot!( + ctx + .config("build") + .stage(2) + .args(&["--set", "rust.lld=true", "--set", "rust.llvm-bitcode-linker=true"]) + .render_steps(), @r" + [build] llvm <host> + [build] rustc 0 <host> -> rustc 1 <host> + [build] rustc 0 <host> -> LldWrapper 1 <host> + [build] rustc 1 <host> -> LlvmBitcodeLinker 2 <host> + [build] rustc 1 <host> -> std 1 <host> + [build] rustc 1 <host> -> rustc 2 <host> + [build] rustc 1 <host> -> LldWrapper 2 <host> + [build] rustc 2 <host> -> LlvmBitcodeLinker 3 <host> + [build] rustc 2 <host> -> std 2 <host> + [build] rustdoc 1 <host> + " + ); + } + + #[test] + fn build_compiler_tools_cross() { + let ctx = TestCtx::new(); + insta::assert_snapshot!( + ctx + .config("build") + .stage(2) + .args(&["--set", "rust.lld=true", "--set", "rust.llvm-bitcode-linker=true"]) + .hosts(&[TEST_TRIPLE_1]) + .render_steps(), @r" + [build] llvm <host> + [build] rustc 0 <host> -> rustc 1 <host> + [build] rustc 0 <host> -> LldWrapper 1 <host> + [build] rustc 1 <host> -> LlvmBitcodeLinker 2 <host> + [build] rustc 1 <host> -> std 1 <host> + [build] rustc 1 <host> -> rustc 2 <host> + [build] rustc 1 <host> -> LldWrapper 2 <host> + [build] rustc 2 <host> -> LlvmBitcodeLinker 3 <host> + [build] rustc 1 <host> -> std 1 <target1> + [build] rustc 2 <host> -> std 2 <target1> + [build] llvm <target1> + [build] rustc 1 <host> -> rustc 2 <target1> + [build] rustc 1 <host> -> LldWrapper 2 <target1> + [build] rustc 2 <target1> -> LlvmBitcodeLinker 3 <target1> + [build] rustdoc 1 <target1> + " + ); + } + + #[test] fn build_library_no_explicit_stage() { let ctx = TestCtx::new(); insta::assert_snapshot!( @@ -1040,6 +1092,7 @@ mod snapshot { [build] rustc 0 <host> -> cargo-clippy 1 <host> [build] rustc 0 <host> -> miri 1 <host> [build] rustc 0 <host> -> cargo-miri 1 <host> + [build] rustc 1 <host> -> LlvmBitcodeLinker 2 <host> "); } @@ -1230,6 +1283,7 @@ mod snapshot { [build] rustc 0 <host> -> cargo-clippy 1 <target1> [build] rustc 0 <host> -> miri 1 <target1> [build] rustc 0 <host> -> cargo-miri 1 <target1> + [build] rustc 1 <host> -> LlvmBitcodeLinker 2 <target1> "); } diff --git a/src/bootstrap/src/utils/tests/mod.rs b/src/bootstrap/src/utils/tests/mod.rs index 59c169b0f2b..5b568c1df5b 100644 --- a/src/bootstrap/src/utils/tests/mod.rs +++ b/src/bootstrap/src/utils/tests/mod.rs @@ -96,8 +96,6 @@ impl ConfigBuilder { // in-tree LLVM from sources. self.args.push("--set".to_string()); self.args.push("llvm.download-ci-llvm=false".to_string()); - self.args.push("--set".to_string()); - self.args.push(format!("target.'{}'.llvm-config=false", get_host_target())); // Do not mess with the local rustc checkout build directory self.args.push("--build-dir".to_string()); diff --git a/src/tools/miri/src/machine.rs b/src/tools/miri/src/machine.rs index 693b8916d89..35399dbf4cb 100644 --- a/src/tools/miri/src/machine.rs +++ b/src/tools/miri/src/machine.rs @@ -1014,8 +1014,6 @@ impl<'tcx> Machine<'tcx> for MiriMachine<'tcx> { const PANIC_ON_ALLOC_FAIL: bool = false; - const TRACING_ENABLED: bool = cfg!(feature = "tracing"); - #[inline(always)] fn enforce_alignment(ecx: &MiriInterpCx<'tcx>) -> bool { ecx.machine.check_alignment != AlignmentCheck::None @@ -1827,6 +1825,16 @@ impl<'tcx> Machine<'tcx> for MiriMachine<'tcx> { #[cfg(not(target_os = "linux"))] MiriAllocParams::Global } + + fn enter_trace_span(span: impl FnOnce() -> tracing::Span) -> impl EnteredTraceSpan { + #[cfg(feature = "tracing")] + { span().entered() } + #[cfg(not(feature = "tracing"))] + { + let _ = span; // so we avoid the "unused variable" warning + () + } + } } /// Trait for callbacks handling asynchronous machine operations. diff --git a/tests/ui/error-codes/E0424.stderr b/tests/ui/error-codes/E0424.stderr index d02da3e4ecb..831a070bf6c 100644 --- a/tests/ui/error-codes/E0424.stderr +++ b/tests/ui/error-codes/E0424.stderr @@ -40,8 +40,6 @@ LL | fn qux(&self) { error[E0424]: expected unit struct, unit variant or constant, found module `self` --> $DIR/E0424.rs:20:9 | -LL | fn main () { - | ---- this function can't have a `self` parameter LL | let self = "self"; | ^^^^ `self` value is a keyword and may not be bound to variables or shadowed diff --git a/tests/ui/float/conv-bits-runtime-const.rs b/tests/ui/float/conv-bits-runtime-const.rs index 3046728fe66..1373001b74d 100644 --- a/tests/ui/float/conv-bits-runtime-const.rs +++ b/tests/ui/float/conv-bits-runtime-const.rs @@ -5,25 +5,24 @@ #![feature(f16)] #![feature(f128)] +#![feature(cfg_target_has_reliable_f16_f128)] #![allow(unused_macro_rules)] +// expect the unexpected (`target_has_reliable_*` are not "known" configs since they are unstable) +#![expect(unexpected_cfgs)] use std::hint::black_box; macro_rules! both_assert { - ($a:expr) => { - { - const _: () = assert!($a); - // `black_box` prevents promotion, and MIR opts are disabled above, so this is truly - // going through LLVM. - assert!(black_box($a)); - } - }; - ($a:expr, $b:expr) => { - { - const _: () = assert!($a == $b); - assert_eq!(black_box($a), black_box($b)); - } - }; + ($a:expr) => {{ + const _: () = assert!($a); + // `black_box` prevents promotion, and MIR opts are disabled above, so this is truly + // going through LLVM. + assert!(black_box($a)); + }}; + ($a:expr, $b:expr) => {{ + const _: () = assert!($a == $b); + assert_eq!(black_box($a), black_box($b)); + }}; } fn has_broken_floats() -> bool { @@ -31,8 +30,8 @@ fn has_broken_floats() -> bool { cfg!(all(target_arch = "x86", not(target_feature = "sse2"))) } -#[cfg(target_arch = "x86_64")] -fn f16(){ +#[cfg(target_has_reliable_f16)] +fn f16() { both_assert!((1f16).to_bits(), 0x3c00); both_assert!(u16::from_be_bytes(1f16.to_be_bytes()), 0x3c00); both_assert!((12.5f16).to_bits(), 0x4a40); @@ -122,7 +121,7 @@ fn f64() { } } -#[cfg(target_arch = "x86_64")] +#[cfg(target_has_reliable_f128)] fn f128() { both_assert!((1f128).to_bits(), 0x3fff0000000000000000000000000000); both_assert!(u128::from_be_bytes(1f128.to_be_bytes()), 0x3fff0000000000000000000000000000); @@ -154,12 +153,10 @@ fn f128() { } fn main() { + #[cfg(target_has_reliable_f16)] + f16(); f32(); f64(); - - #[cfg(target_arch = "x86_64")] - { - f16(); - f128(); - } + #[cfg(target_has_reliable_f128)] + f128(); } diff --git a/tests/ui/mir/enum/convert_non_enum_break.rs b/tests/ui/mir/enum/convert_non_integer_break.rs index de062c39907..29795190bf6 100644 --- a/tests/ui/mir/enum/convert_non_enum_break.rs +++ b/tests/ui/mir/enum/convert_non_integer_break.rs @@ -1,6 +1,6 @@ //@ run-fail //@ compile-flags: -C debug-assertions -//@ error-pattern: trying to construct an enum from an invalid value 0x10000 +//@ error-pattern: trying to construct an enum from an invalid value #[allow(dead_code)] #[repr(u32)] @@ -11,10 +11,9 @@ enum Foo { #[allow(dead_code)] struct Bar { - a: u16, - b: u16, + a: u32, } fn main() { - let _val: Foo = unsafe { std::mem::transmute::<_, Foo>(Bar { a: 0, b: 1 }) }; + let _val: Foo = unsafe { std::mem::transmute::<_, Foo>(Bar { a: 3 }) }; } diff --git a/tests/ui/mir/enum/convert_non_enum_niche_break.rs b/tests/ui/mir/enum/convert_non_integer_niche_break.rs index 9ff4849c5b1..9ff4849c5b1 100644 --- a/tests/ui/mir/enum/convert_non_enum_niche_break.rs +++ b/tests/ui/mir/enum/convert_non_integer_niche_break.rs diff --git a/tests/ui/mir/enum/convert_non_enum_niche_ok.rs b/tests/ui/mir/enum/convert_non_integer_niche_ok.rs index 24027da5458..24027da5458 100644 --- a/tests/ui/mir/enum/convert_non_enum_niche_ok.rs +++ b/tests/ui/mir/enum/convert_non_integer_niche_ok.rs diff --git a/tests/ui/mir/enum/convert_non_enum_ok.rs b/tests/ui/mir/enum/convert_non_integer_ok.rs index 37fc64342ca..c9831531386 100644 --- a/tests/ui/mir/enum/convert_non_enum_ok.rs +++ b/tests/ui/mir/enum/convert_non_integer_ok.rs @@ -10,11 +10,10 @@ enum Foo { #[allow(dead_code)] struct Bar { - a: u16, - b: u16, + a: u32, } fn main() { - let _val: Foo = unsafe { std::mem::transmute::<_, Foo>(Bar { a: 0, b: 0 }) }; - let _val: Foo = unsafe { std::mem::transmute::<_, Foo>(Bar { a: 1, b: 0 }) }; + let _val: Foo = unsafe { std::mem::transmute::<_, Foo>(Bar { a: 0 }) }; + let _val: Foo = unsafe { std::mem::transmute::<_, Foo>(Bar { a: 1 }) }; } diff --git a/tests/ui/mir/enum/niche_option_tuple_break.rs b/tests/ui/mir/enum/niche_option_tuple_break.rs index 43eef3a4cc5..affdc4784a3 100644 --- a/tests/ui/mir/enum/niche_option_tuple_break.rs +++ b/tests/ui/mir/enum/niche_option_tuple_break.rs @@ -1,8 +1,9 @@ //@ run-fail //@ compile-flags: -C debug-assertions -//@ error-pattern: trying to construct an enum from an invalid value 0x3 +//@ error-pattern: trying to construct an enum from an invalid value #[allow(dead_code)] +#[repr(u32)] enum Foo { A, B, @@ -10,11 +11,11 @@ enum Foo { #[allow(dead_code)] struct Bar { - a: usize, - b: usize, + a: u32, + b: u32, } fn main() { - let _val: Option<(usize, Foo)> = - unsafe { std::mem::transmute::<_, Option<(usize, Foo)>>(Bar { a: 3, b: 3 }) }; + let _val: Option<(u32, Foo)> = + unsafe { std::mem::transmute::<_, Option<(u32, Foo)>>(Bar { a: 3, b: 3 }) }; } diff --git a/tests/ui/mir/enum/with_niche_int_break.rs b/tests/ui/mir/enum/with_niche_int_break.rs index 0ec60a33564..6a97eaa8f4f 100644 --- a/tests/ui/mir/enum/with_niche_int_break.rs +++ b/tests/ui/mir/enum/with_niche_int_break.rs @@ -1,6 +1,6 @@ //@ run-fail //@ compile-flags: -C debug-assertions -//@ error-pattern: trying to construct an enum from an invalid value 0x4 +//@ error-pattern: trying to construct an enum from an invalid value #[allow(dead_code)] #[repr(u16)] @@ -17,5 +17,5 @@ enum Nested { } fn main() { - let _val: Nested = unsafe { std::mem::transmute::<u32, Nested>(4) }; + let _val: Nested = unsafe { std::mem::transmute::<u32, Nested>(u32::MAX) }; } diff --git a/tests/ui/resolve/false-self-in-macro-issue-143134.rs b/tests/ui/resolve/false-self-in-macro-issue-143134.rs new file mode 100644 index 00000000000..0983b8b3dc3 --- /dev/null +++ b/tests/ui/resolve/false-self-in-macro-issue-143134.rs @@ -0,0 +1,10 @@ +trait T { + fn f(self); + } + impl T for () { + fn f(self) { + let self = (); //~ ERROR expected unit struct, unit variant or constant, found local variable `self` + } +} + +fn main() {} diff --git a/tests/ui/resolve/false-self-in-macro-issue-143134.stderr b/tests/ui/resolve/false-self-in-macro-issue-143134.stderr new file mode 100644 index 00000000000..48c979575ea --- /dev/null +++ b/tests/ui/resolve/false-self-in-macro-issue-143134.stderr @@ -0,0 +1,9 @@ +error[E0424]: expected unit struct, unit variant or constant, found local variable `self` + --> $DIR/false-self-in-macro-issue-143134.rs:6:13 + | +LL | let self = (); + | ^^^^ `self` value is a keyword and may not be bound to variables or shadowed + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0424`. diff --git a/tests/ui/resolve/auxiliary/suggest-constructor-cycle-error.rs b/tests/ui/resolve/suggestions/auxiliary/suggest-constructor-cycle-error.rs index 8de68c38bc3..8de68c38bc3 100644 --- a/tests/ui/resolve/auxiliary/suggest-constructor-cycle-error.rs +++ b/tests/ui/resolve/suggestions/auxiliary/suggest-constructor-cycle-error.rs diff --git a/tests/ui/resolve/suggest-builder-fn.rs b/tests/ui/resolve/suggestions/suggest-builder-fn.rs index 959675ef2c9..959675ef2c9 100644 --- a/tests/ui/resolve/suggest-builder-fn.rs +++ b/tests/ui/resolve/suggestions/suggest-builder-fn.rs diff --git a/tests/ui/resolve/suggest-builder-fn.stderr b/tests/ui/resolve/suggestions/suggest-builder-fn.stderr index 9c5eed35ccf..9c5eed35ccf 100644 --- a/tests/ui/resolve/suggest-builder-fn.stderr +++ b/tests/ui/resolve/suggestions/suggest-builder-fn.stderr diff --git a/tests/ui/resolve/suggest-constructor-cycle-error.rs b/tests/ui/resolve/suggestions/suggest-constructor-cycle-error.rs index c23d6788eef..c23d6788eef 100644 --- a/tests/ui/resolve/suggest-constructor-cycle-error.rs +++ b/tests/ui/resolve/suggestions/suggest-constructor-cycle-error.rs diff --git a/tests/ui/resolve/suggest-constructor-cycle-error.stderr b/tests/ui/resolve/suggestions/suggest-constructor-cycle-error.stderr index c6ec2465a43..c6ec2465a43 100644 --- a/tests/ui/resolve/suggest-constructor-cycle-error.stderr +++ b/tests/ui/resolve/suggestions/suggest-constructor-cycle-error.stderr diff --git a/tests/ui/resolve/suggest-import-without-clobbering-attrs.fixed b/tests/ui/resolve/suggestions/suggest-import-without-clobbering-attrs.fixed index 607c9af4927..607c9af4927 100644 --- a/tests/ui/resolve/suggest-import-without-clobbering-attrs.fixed +++ b/tests/ui/resolve/suggestions/suggest-import-without-clobbering-attrs.fixed diff --git a/tests/ui/resolve/suggest-import-without-clobbering-attrs.rs b/tests/ui/resolve/suggestions/suggest-import-without-clobbering-attrs.rs index 6cc53fb1086..6cc53fb1086 100644 --- a/tests/ui/resolve/suggest-import-without-clobbering-attrs.rs +++ b/tests/ui/resolve/suggestions/suggest-import-without-clobbering-attrs.rs diff --git a/tests/ui/resolve/suggest-import-without-clobbering-attrs.stderr b/tests/ui/resolve/suggestions/suggest-import-without-clobbering-attrs.stderr index de65d695dd2..de65d695dd2 100644 --- a/tests/ui/resolve/suggest-import-without-clobbering-attrs.stderr +++ b/tests/ui/resolve/suggestions/suggest-import-without-clobbering-attrs.stderr diff --git a/tests/ui/resolve/suggest-path-for-tuple-struct.rs b/tests/ui/resolve/suggestions/suggest-path-for-tuple-struct.rs index c8bc3e79fe2..c8bc3e79fe2 100644 --- a/tests/ui/resolve/suggest-path-for-tuple-struct.rs +++ b/tests/ui/resolve/suggestions/suggest-path-for-tuple-struct.rs diff --git a/tests/ui/resolve/suggest-path-for-tuple-struct.stderr b/tests/ui/resolve/suggestions/suggest-path-for-tuple-struct.stderr index 68a5b550978..68a5b550978 100644 --- a/tests/ui/resolve/suggest-path-for-tuple-struct.stderr +++ b/tests/ui/resolve/suggestions/suggest-path-for-tuple-struct.stderr diff --git a/tests/ui/resolve/suggest-path-instead-of-mod-dot-item.rs b/tests/ui/resolve/suggestions/suggest-path-instead-of-mod-dot-item.rs index d5d6b13d62c..d5d6b13d62c 100644 --- a/tests/ui/resolve/suggest-path-instead-of-mod-dot-item.rs +++ b/tests/ui/resolve/suggestions/suggest-path-instead-of-mod-dot-item.rs diff --git a/tests/ui/resolve/suggest-path-instead-of-mod-dot-item.stderr b/tests/ui/resolve/suggestions/suggest-path-instead-of-mod-dot-item.stderr index 5db943cd10d..5db943cd10d 100644 --- a/tests/ui/resolve/suggest-path-instead-of-mod-dot-item.stderr +++ b/tests/ui/resolve/suggestions/suggest-path-instead-of-mod-dot-item.stderr diff --git a/tests/ui/suggestions/suggest-remove-refs-6.rs b/tests/ui/suggestions/suggest-remove-refs-6.rs new file mode 100644 index 00000000000..0d06aed4806 --- /dev/null +++ b/tests/ui/suggestions/suggest-remove-refs-6.rs @@ -0,0 +1,12 @@ +// Regression test for #143523. + +trait Trait {} + +impl Trait for Vec<i32> {} + +fn foo(_: impl Trait) {} + +fn main() { + foo(&mut vec![1]); + //~^ ERROR the trait bound `&mut Vec<{integer}>: Trait` is not satisfied +} diff --git a/tests/ui/suggestions/suggest-remove-refs-6.stderr b/tests/ui/suggestions/suggest-remove-refs-6.stderr new file mode 100644 index 00000000000..bdc5a8a9049 --- /dev/null +++ b/tests/ui/suggestions/suggest-remove-refs-6.stderr @@ -0,0 +1,22 @@ +error[E0277]: the trait bound `&mut Vec<{integer}>: Trait` is not satisfied + --> $DIR/suggest-remove-refs-6.rs:10:9 + | +LL | foo(&mut vec![1]); + | --- ^^^^^^^^^^^^ the trait `Trait` is not implemented for `&mut Vec<{integer}>` + | | + | required by a bound introduced by this call + | +note: required by a bound in `foo` + --> $DIR/suggest-remove-refs-6.rs:7:16 + | +LL | fn foo(_: impl Trait) {} + | ^^^^^ required by this bound in `foo` +help: consider removing the leading `&`-reference + | +LL - foo(&mut vec![1]); +LL + foo(vec![1]); + | + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/traits/error-reporting/ambiguity-in-dropck-err-reporting.rs b/tests/ui/traits/error-reporting/ambiguity-in-dropck-err-reporting.rs new file mode 100644 index 00000000000..ad313823fe4 --- /dev/null +++ b/tests/ui/traits/error-reporting/ambiguity-in-dropck-err-reporting.rs @@ -0,0 +1,18 @@ +// Regression test for #143481, where we were calling `predicates_of` on +// a Crate HIR node because we were using a dummy obligation cause's body id +// without checking that it was meaningful first. + +trait Role { + type Inner; +} +struct HandshakeCallback<C>(C); +impl<C: Clone> Role for HandshakeCallback { + //~^ ERROR missing generics + type Inner = usize; +} +struct Handshake<R: Role>(R::Inner); +fn accept() -> Handshake<HandshakeCallback<()>> { + todo!() +} + +fn main() {} diff --git a/tests/ui/traits/error-reporting/ambiguity-in-dropck-err-reporting.stderr b/tests/ui/traits/error-reporting/ambiguity-in-dropck-err-reporting.stderr new file mode 100644 index 00000000000..17ace03e891 --- /dev/null +++ b/tests/ui/traits/error-reporting/ambiguity-in-dropck-err-reporting.stderr @@ -0,0 +1,19 @@ +error[E0107]: missing generics for struct `HandshakeCallback` + --> $DIR/ambiguity-in-dropck-err-reporting.rs:9:25 + | +LL | impl<C: Clone> Role for HandshakeCallback { + | ^^^^^^^^^^^^^^^^^ expected 1 generic argument + | +note: struct defined here, with 1 generic parameter: `C` + --> $DIR/ambiguity-in-dropck-err-reporting.rs:8:8 + | +LL | struct HandshakeCallback<C>(C); + | ^^^^^^^^^^^^^^^^^ - +help: add missing generic argument + | +LL | impl<C: Clone> Role for HandshakeCallback<C> { + | +++ + +error: aborting due to 1 previous error + +For more information about this error, try `rustc --explain E0107`. |