diff --git a/compiler/rustc_borrowck/src/consumers.rs b/compiler/rustc_borrowck/src/consumers.rs index f6e4e3888418f..4333038a6f936 100644 --- a/compiler/rustc_borrowck/src/consumers.rs +++ b/compiler/rustc_borrowck/src/consumers.rs @@ -14,7 +14,9 @@ pub use super::{ }; /// This function computes Polonius facts for the given body. It makes a copy of -/// the body because it needs to regenerate the region identifiers. +/// the body because it needs to regenerate the region identifiers. This function +/// should never be invoked during a typical compilation session due to performance +/// issues with Polonius. /// /// Note: /// * This function will panic if the required body was already stolen. This @@ -22,8 +24,6 @@ pub use super::{ /// because they are evaluated during typechecking. The panic can be avoided /// by overriding the `mir_borrowck` query. You can find a complete example /// that shows how to do this at `src/test/run-make/obtain-borrowck/`. -/// * This function will also panic if computation of Polonius facts -/// (`-Zpolonius` flag) is not enabled. /// /// * Polonius is highly unstable, so expect regular changes in its signature or other details. pub fn get_body_with_borrowck_facts<'tcx>( diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index 4e4b8a953cd12..b3b7d7e02ccef 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -154,11 +154,6 @@ fn do_mir_borrowck<'a, 'tcx>( debug!("do_mir_borrowck(def = {:?})", def); - assert!( - !return_body_with_facts || infcx.tcx.sess.opts.debugging_opts.polonius, - "borrowck facts can be requested only when Polonius is enabled" - ); - let tcx = infcx.tcx; let param_env = tcx.param_env(def.did); let id = tcx.hir().local_def_id_to_hir_id(def.did); @@ -235,6 +230,8 @@ fn do_mir_borrowck<'a, 'tcx>( let borrow_set = Rc::new(BorrowSet::build(tcx, body, locals_are_invalidated_at_exit, &mdpe.move_data)); + let use_polonius = return_body_with_facts || infcx.tcx.sess.opts.debugging_opts.polonius; + // Compute non-lexical lifetimes. let nll::NllOutput { regioncx, @@ -254,6 +251,7 @@ fn do_mir_borrowck<'a, 'tcx>( &mdpe.move_data, &borrow_set, &upvars, + use_polonius, ); // Dump MIR results into a file, if that is enabled. This let us diff --git a/compiler/rustc_borrowck/src/nll.rs b/compiler/rustc_borrowck/src/nll.rs index 8b2c0362261ca..477b049b07596 100644 --- a/compiler/rustc_borrowck/src/nll.rs +++ b/compiler/rustc_borrowck/src/nll.rs @@ -164,8 +164,10 @@ pub(crate) fn compute_regions<'cx, 'tcx>( move_data: &MoveData<'tcx>, borrow_set: &BorrowSet<'tcx>, upvars: &[Upvar<'tcx>], + use_polonius: bool, ) -> NllOutput<'tcx> { - let mut all_facts = AllFacts::enabled(infcx.tcx).then_some(AllFacts::default()); + let mut all_facts = + (use_polonius || AllFacts::enabled(infcx.tcx)).then_some(AllFacts::default()); let universal_regions = Rc::new(universal_regions); @@ -281,7 +283,7 @@ pub(crate) fn compute_regions<'cx, 'tcx>( all_facts.write_to_dir(dir_path, location_table).unwrap(); } - if infcx.tcx.sess.opts.debugging_opts.polonius { + if use_polonius { let algorithm = env::var("POLONIUS_ALGORITHM").unwrap_or_else(|_| String::from("Hybrid")); let algorithm = Algorithm::from_str(&algorithm).unwrap(); diff --git a/compiler/rustc_expand/src/mbe/quoted.rs b/compiler/rustc_expand/src/mbe/quoted.rs index fb7479eafc86f..363cc72b52c3e 100644 --- a/compiler/rustc_expand/src/mbe/quoted.rs +++ b/compiler/rustc_expand/src/mbe/quoted.rs @@ -72,7 +72,7 @@ pub(super) fn parse( // this with just `span.edition()`. A // `SyntaxContext::root()` from the current crate will // have the edition of the current crate, and a - // `SyntaxxContext::root()` from a foreign crate will + // `SyntaxContext::root()` from a foreign crate will // have the edition of that crate (which we manually // retrieve via the `edition` parameter). if span.ctxt() == SyntaxContext::root() { diff --git a/compiler/rustc_infer/src/traits/error_reporting/mod.rs b/compiler/rustc_infer/src/traits/error_reporting/mod.rs index d0bd508bc257f..9dbfa3a850ba8 100644 --- a/compiler/rustc_infer/src/traits/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/traits/error_reporting/mod.rs @@ -83,10 +83,6 @@ pub fn report_object_safety_error( messages.push(msg.clone()); } } - if trait_span.is_some() { - // Only provide the help if its a local trait, otherwise it's not actionable. - violation.solution(&mut err); - } } } let has_multi_span = !multi_span.is_empty(); @@ -104,5 +100,13 @@ pub fn report_object_safety_error( to be resolvable dynamically; for more information visit \ ", ); + if trait_span.is_some() { + let mut reported_violations: Vec<_> = reported_violations.into_iter().collect(); + reported_violations.sort(); + for violation in reported_violations { + // Only provide the help if its a local trait, otherwise it's not actionable. + violation.solution(&mut err); + } + } err } diff --git a/compiler/rustc_middle/src/traits/mod.rs b/compiler/rustc_middle/src/traits/mod.rs index 07c2ffac8c78c..fc88b95bc67cd 100644 --- a/compiler/rustc_middle/src/traits/mod.rs +++ b/compiler/rustc_middle/src/traits/mod.rs @@ -730,7 +730,7 @@ pub struct ImplSourceTraitAliasData<'tcx, N> { pub nested: Vec, } -#[derive(Clone, Debug, PartialEq, Eq, Hash, HashStable)] +#[derive(Clone, Debug, PartialEq, Eq, Hash, HashStable, PartialOrd, Ord)] pub enum ObjectSafetyViolation { /// `Self: Sized` declared on the trait. SizedSelf(SmallVec<[Span; 1]>), @@ -879,7 +879,7 @@ impl ObjectSafetyViolation { } /// Reasons a method might not be object-safe. -#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, HashStable)] +#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash, HashStable, PartialOrd, Ord)] pub enum MethodViolationCode { /// e.g., `fn foo()` StaticMethod(Option<(&'static str, Span)>, Span, bool /* has args */), diff --git a/compiler/rustc_mir_dataflow/src/lib.rs b/compiler/rustc_mir_dataflow/src/lib.rs index bfae09b7760a0..72c4e27cbeabf 100644 --- a/compiler/rustc_mir_dataflow/src/lib.rs +++ b/compiler/rustc_mir_dataflow/src/lib.rs @@ -28,8 +28,8 @@ pub use self::drop_flag_effects::{ on_lookup_result_bits, }; pub use self::framework::{ - fmt, lattice, visit_results, Analysis, AnalysisDomain, Backward, Direction, Engine, Forward, - GenKill, GenKillAnalysis, JoinSemiLattice, Results, ResultsCursor, ResultsRefCursor, + fmt, graphviz, lattice, visit_results, Analysis, AnalysisDomain, Backward, Direction, Engine, + Forward, GenKill, GenKillAnalysis, JoinSemiLattice, Results, ResultsCursor, ResultsRefCursor, ResultsVisitable, ResultsVisitor, }; diff --git a/compiler/rustc_mir_transform/src/lib.rs b/compiler/rustc_mir_transform/src/lib.rs index 90d7cbee976d0..bfd0de85438d1 100644 --- a/compiler/rustc_mir_transform/src/lib.rs +++ b/compiler/rustc_mir_transform/src/lib.rs @@ -76,7 +76,7 @@ mod unreachable_prop; use rustc_const_eval::transform::check_consts; use rustc_const_eval::transform::promote_consts; use rustc_const_eval::transform::validate; -use rustc_const_eval::transform::MirPass; +pub use rustc_const_eval::transform::MirPass; use rustc_mir_dataflow::rustc_peek; pub fn provide(providers: &mut Providers) { diff --git a/compiler/rustc_parse/src/parser/expr.rs b/compiler/rustc_parse/src/parser/expr.rs index dc80dab8c6c5f..737f1d9cbb15e 100644 --- a/compiler/rustc_parse/src/parser/expr.rs +++ b/compiler/rustc_parse/src/parser/expr.rs @@ -907,6 +907,12 @@ impl<'a> Parser<'a> { } } + fn look_ahead_type_ascription_as_field(&mut self) -> bool { + self.look_ahead(1, |t| t.is_ident()) + && self.look_ahead(2, |t| t == &token::Colon) + && self.look_ahead(3, |t| t.can_begin_expr()) + } + fn parse_dot_suffix_expr(&mut self, lo: Span, base: P) -> PResult<'a, P> { match self.token.uninterpolate().kind { token::Ident(..) => self.parse_dot_suffix(base, lo), @@ -1056,12 +1062,76 @@ impl<'a> Parser<'a> { /// Parse a function call expression, `expr(...)`. fn parse_fn_call_expr(&mut self, lo: Span, fun: P) -> P { - let seq = self.parse_paren_expr_seq().map(|args| { + let snapshot = if self.token.kind == token::OpenDelim(token::Paren) + && self.look_ahead_type_ascription_as_field() + { + Some((self.clone(), fun.kind.clone())) + } else { + None + }; + let open_paren = self.token.span; + + let mut seq = self.parse_paren_expr_seq().map(|args| { self.mk_expr(lo.to(self.prev_token.span), self.mk_call(fun, args), AttrVec::new()) }); + if let Some(expr) = + self.maybe_recover_struct_lit_bad_delims(lo, open_paren, &mut seq, snapshot) + { + return expr; + } self.recover_seq_parse_error(token::Paren, lo, seq) } + /// If we encounter a parser state that looks like the user has written a `struct` literal with + /// parentheses instead of braces, recover the parser state and provide suggestions. + fn maybe_recover_struct_lit_bad_delims( + &mut self, + lo: Span, + open_paren: Span, + seq: &mut PResult<'a, P>, + snapshot: Option<(Self, ExprKind)>, + ) -> Option> { + match (seq.as_mut(), snapshot) { + (Err(ref mut err), Some((mut snapshot, ExprKind::Path(None, path)))) => { + let name = pprust::path_to_string(&path); + snapshot.bump(); // `(` + match snapshot.parse_struct_fields(path.clone(), false, token::Paren) { + Ok((fields, ..)) if snapshot.eat(&token::CloseDelim(token::Paren)) => { + // We have are certain we have `Enum::Foo(a: 3, b: 4)`, suggest + // `Enum::Foo { a: 3, b: 4 }` or `Enum::Foo(3, 4)`. + *self = snapshot; + let close_paren = self.prev_token.span; + let span = lo.to(self.prev_token.span); + err.cancel(); + self.struct_span_err( + span, + "invalid `struct` delimiters or `fn` call arguments", + ) + .multipart_suggestion( + &format!("if `{}` is a struct, use braces as delimiters", name), + vec![(open_paren, " { ".to_string()), (close_paren, " }".to_string())], + Applicability::MaybeIncorrect, + ) + .multipart_suggestion( + &format!("if `{}` is a function, use the arguments directly", name), + fields + .into_iter() + .map(|field| (field.span.until(field.expr.span), String::new())) + .collect(), + Applicability::MaybeIncorrect, + ) + .emit(); + return Some(self.mk_expr_err(span)); + } + Ok(_) => {} + Err(mut err) => err.emit(), + } + } + _ => {} + } + None + } + /// Parse an indexing expression `expr[...]`. fn parse_index_expr(&mut self, lo: Span, base: P) -> PResult<'a, P> { self.bump(); // `[` @@ -2374,14 +2444,12 @@ impl<'a> Parser<'a> { .emit(); } - /// Precondition: already parsed the '{'. - pub(super) fn parse_struct_expr( + pub(super) fn parse_struct_fields( &mut self, - qself: Option, pth: ast::Path, - attrs: AttrVec, recover: bool, - ) -> PResult<'a, P> { + close_delim: token::DelimToken, + ) -> PResult<'a, (Vec, ast::StructRest, bool)> { let mut fields = Vec::new(); let mut base = ast::StructRest::None; let mut recover_async = false; @@ -2393,11 +2461,11 @@ impl<'a> Parser<'a> { e.note("for more on editions, read https://doc.rust-lang.org/edition-guide"); }; - while self.token != token::CloseDelim(token::Brace) { + while self.token != token::CloseDelim(close_delim) { if self.eat(&token::DotDot) { let exp_span = self.prev_token.span; // We permit `.. }` on the left-hand side of a destructuring assignment. - if self.check(&token::CloseDelim(token::Brace)) { + if self.check(&token::CloseDelim(close_delim)) { self.sess.gated_spans.gate(sym::destructuring_assignment, self.prev_token.span); base = ast::StructRest::Rest(self.prev_token.span.shrink_to_hi()); break; @@ -2438,7 +2506,7 @@ impl<'a> Parser<'a> { } }; - match self.expect_one_of(&[token::Comma], &[token::CloseDelim(token::Brace)]) { + match self.expect_one_of(&[token::Comma], &[token::CloseDelim(close_delim)]) { Ok(_) => { if let Some(f) = parsed_field.or(recovery_field) { // Only include the field if there's no parse error for the field name. @@ -2469,8 +2537,21 @@ impl<'a> Parser<'a> { } } } + Ok((fields, base, recover_async)) + } - let span = pth.span.to(self.token.span); + /// Precondition: already parsed the '{'. + pub(super) fn parse_struct_expr( + &mut self, + qself: Option, + pth: ast::Path, + attrs: AttrVec, + recover: bool, + ) -> PResult<'a, P> { + let lo = pth.span; + let (fields, base, recover_async) = + self.parse_struct_fields(pth.clone(), recover, token::Brace)?; + let span = lo.to(self.token.span); self.expect(&token::CloseDelim(token::Brace))?; let expr = if recover_async { ExprKind::Err diff --git a/compiler/rustc_span/src/symbol.rs b/compiler/rustc_span/src/symbol.rs index 4b416f29f26f7..d14feecbbdf1d 100644 --- a/compiler/rustc_span/src/symbol.rs +++ b/compiler/rustc_span/src/symbol.rs @@ -934,7 +934,6 @@ symbols! { panic_unwind, panicking, param_attrs, - parent_trait, partial_cmp, partial_ord, passes, diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs index 3a32f1cb903e5..6128c119b6b76 100644 --- a/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs +++ b/compiler/rustc_trait_selection/src/traits/error_reporting/on_unimplemented.rs @@ -154,9 +154,6 @@ impl<'a, 'tcx> InferCtxtExt<'tcx> for InferCtxt<'a, 'tcx> { flags.push((sym::from_method, Some(method.to_string()))); } } - if let Some((t, _)) = self.get_parent_trait_ref(&obligation.cause.code) { - flags.push((sym::parent_trait, Some(t))); - } if let Some(k) = obligation.cause.span.desugaring_kind() { flags.push((sym::from_desugaring, None)); diff --git a/library/backtrace b/library/backtrace index 4f925f8d81dfa..cc89bb66f91b2 160000 --- a/library/backtrace +++ b/library/backtrace @@ -1 +1 @@ -Subproject commit 4f925f8d81dfa57067537217e501e1dff7433491 +Subproject commit cc89bb66f91b2b4a640b0b525ca5d753e3346d7e diff --git a/library/core/src/iter/traits/iterator.rs b/library/core/src/iter/traits/iterator.rs index 330d3714247c5..b0a9d9f5ef5c9 100644 --- a/library/core/src/iter/traits/iterator.rs +++ b/library/core/src/iter/traits/iterator.rs @@ -2172,8 +2172,9 @@ pub trait Iterator { /// If the iterator is empty, returns [`None`]; otherwise, returns the /// result of the reduction. /// + /// The reducing function is a closure with two arguments: an 'accumulator', and an element. /// For iterators with at least one element, this is the same as [`fold()`] - /// with the first element of the iterator as the initial value, folding + /// with the first element of the iterator as the initial accumulator value, folding /// every subsequent element into it. /// /// [`fold()`]: Iterator::fold @@ -2187,8 +2188,8 @@ pub trait Iterator { /// where I: Iterator, /// I::Item: Ord, /// { - /// iter.reduce(|a, b| { - /// if a >= b { a } else { b } + /// iter.reduce(|accum, item| { + /// if accum >= item { accum } else { item } /// }) /// } /// let a = [10, 20, 5, -23, 0]; diff --git a/library/std/src/ffi/c_str.rs b/library/std/src/ffi/c_str.rs index de05c37785295..3b9175503080c 100644 --- a/library/std/src/ffi/c_str.rs +++ b/library/std/src/ffi/c_str.rs @@ -915,6 +915,7 @@ impl From for Box { #[stable(feature = "cow_from_cstr", since = "1.28.0")] impl<'a> From for Cow<'a, CStr> { + /// Converts a [`CString`] into an owned [`Cow`] without copying or allocating. #[inline] fn from(s: CString) -> Cow<'a, CStr> { Cow::Owned(s) @@ -923,6 +924,7 @@ impl<'a> From for Cow<'a, CStr> { #[stable(feature = "cow_from_cstr", since = "1.28.0")] impl<'a> From<&'a CStr> for Cow<'a, CStr> { + /// Converts a [`CStr`] into a borrowed [`Cow`] without copying or allocating. #[inline] fn from(s: &'a CStr) -> Cow<'a, CStr> { Cow::Borrowed(s) @@ -931,6 +933,7 @@ impl<'a> From<&'a CStr> for Cow<'a, CStr> { #[stable(feature = "cow_from_cstr", since = "1.28.0")] impl<'a> From<&'a CString> for Cow<'a, CStr> { + /// Converts a `&`[`CString`] into a borrowed [`Cow`] without copying or allocating. #[inline] fn from(s: &'a CString) -> Cow<'a, CStr> { Cow::Borrowed(s.as_c_str()) diff --git a/library/std/src/keyword_docs.rs b/library/std/src/keyword_docs.rs index 3af941f59b689..2e93807037464 100644 --- a/library/std/src/keyword_docs.rs +++ b/library/std/src/keyword_docs.rs @@ -77,7 +77,7 @@ mod as_keyword {} /// '_inner: for j in 1..=200 { /// println!(" inner iteration (j): {}", j); /// if j >= 3 { -/// // breaks from inner loop, let's outer loop continue. +/// // breaks from inner loop, lets outer loop continue. /// break; /// } /// if i >= 2 { diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs index fbc7f19cb731c..b7478d83955de 100644 --- a/src/bootstrap/doc.rs +++ b/src/bootstrap/doc.rs @@ -589,6 +589,7 @@ impl Step for Rustc { cargo.rustdocflag("-Zunstable-options"); cargo.rustdocflag("-Znormalize-docs"); cargo.rustdocflag("--show-type-layout"); + cargo.rustdocflag("--generate-link-to-definition"); compile::rustc_cargo(builder, &mut cargo, target); cargo.arg("-Zunstable-options"); cargo.arg("-Zskip-rustdoc-fingerprint"); diff --git a/src/doc/unstable-book/src/library-features/asm.md b/src/doc/unstable-book/src/library-features/asm.md index 444b1cbf3cc45..ccaf6e8733e0c 100644 --- a/src/doc/unstable-book/src/library-features/asm.md +++ b/src/doc/unstable-book/src/library-features/asm.md @@ -804,9 +804,9 @@ The following ABIs can be used with `clobber_abi`: | Architecture | ABI name | Clobbered registers | | ------------ | -------- | ------------------- | -| x86-32 | `"C"`, `"system"`, `"efiapi"`, `"cdecl"`, `"stdcall"`, `"fastcall"` | `ax`, `cx`, `dx`, `xmm[0-7]`, `mm[0-7]`, `st([0-7])` | -| x86-64 | `"C"`, `"system"` (on Windows), `"efiapi"`, `"win64"` | `ax`, `cx`, `dx`, `r[8-11]`, `xmm[0-31]`, `mm[0-7]`, `st([0-7])` | -| x86-64 | `"C"`, `"system"` (on non-Windows), `"sysv64"` | `ax`, `cx`, `dx`, `si`, `di`, `r[8-11]`, `xmm[0-31]`, `mm[0-7]`, `st([0-7])` | +| x86-32 | `"C"`, `"system"`, `"efiapi"`, `"cdecl"`, `"stdcall"`, `"fastcall"` | `ax`, `cx`, `dx`, `xmm[0-7]`, `mm[0-7]`, `k[1-7]`, `st([0-7])` | +| x86-64 | `"C"`, `"system"` (on Windows), `"efiapi"`, `"win64"` | `ax`, `cx`, `dx`, `r[8-11]`, `xmm[0-31]`, `mm[0-7]`, `k[1-7]`, `st([0-7])` | +| x86-64 | `"C"`, `"system"` (on non-Windows), `"sysv64"` | `ax`, `cx`, `dx`, `si`, `di`, `r[8-11]`, `xmm[0-31]`, `mm[0-7]`, `k[1-7]`, `st([0-7])` | | AArch64 | `"C"`, `"system"`, `"efiapi"` | `x[0-17]`, `x30`, `v[0-31]`, `p[0-15]`, `ffr` | | ARM | `"C"`, `"system"`, `"efiapi"`, `"aapcs"` | `r[0-3]`, `r12`, `r14`, `s[0-15]`, `d[0-7]`, `d[16-31]` | | RISC-V | `"C"`, `"system"`, `"efiapi"` | `x1`, `x[5-7]`, `x[10-17]`, `x[28-31]`, `f[0-7]`, `f[10-17]`, `f[28-31]`, `v[0-31]` | diff --git a/src/test/ui/associated-consts/associated-const-in-trait.stderr b/src/test/ui/associated-consts/associated-const-in-trait.stderr index 7b4594108246b..fc949f2494857 100644 --- a/src/test/ui/associated-consts/associated-const-in-trait.stderr +++ b/src/test/ui/associated-consts/associated-const-in-trait.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Trait` cannot be made into an object LL | impl dyn Trait { | ^^^^^^^^^ `Trait` cannot be made into an object | - = help: consider moving `N` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/associated-const-in-trait.rs:6:11 | @@ -12,6 +11,7 @@ LL | trait Trait { | ----- this trait cannot be made into an object... LL | const N: usize; | ^ ...because it contains this associated `const` + = help: consider moving `N` to another trait error: aborting due to previous error diff --git a/src/test/ui/associated-item/issue-48027.stderr b/src/test/ui/associated-item/issue-48027.stderr index 77915a80a79b0..7b158f1d75474 100644 --- a/src/test/ui/associated-item/issue-48027.stderr +++ b/src/test/ui/associated-item/issue-48027.stderr @@ -21,7 +21,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | impl dyn Bar {} | ^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `X` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-48027.rs:2:11 | @@ -29,6 +28,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | const X: usize; | ^ ...because it contains this associated `const` + = help: consider moving `X` to another trait error: aborting due to 2 previous errors diff --git a/src/test/ui/coherence/coherence-impl-trait-for-trait-object-safe.stderr b/src/test/ui/coherence/coherence-impl-trait-for-trait-object-safe.stderr index a2b779e29540b..e9090c1b6bcfb 100644 --- a/src/test/ui/coherence/coherence-impl-trait-for-trait-object-safe.stderr +++ b/src/test/ui/coherence/coherence-impl-trait-for-trait-object-safe.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `NotObjectSafe` cannot be made into an object LL | impl NotObjectSafe for dyn NotObjectSafe { } | ^^^^^^^^^^^^^^^^^ `NotObjectSafe` cannot be made into an object | - = help: consider moving `eq` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/coherence-impl-trait-for-trait-object-safe.rs:6:43 | @@ -12,6 +11,7 @@ LL | trait NotObjectSafe { fn eq(&self, other: Self); } | ------------- ^^^^ ...because method `eq` references the `Self` type in this parameter | | | this trait cannot be made into an object... + = help: consider moving `eq` to another trait error: aborting due to previous error diff --git a/src/test/ui/const-generics/generic_const_exprs/object-safety-err-ret.stderr b/src/test/ui/const-generics/generic_const_exprs/object-safety-err-ret.stderr index 319e6c2c032a0..4e1d71f154558 100644 --- a/src/test/ui/const-generics/generic_const_exprs/object-safety-err-ret.stderr +++ b/src/test/ui/const-generics/generic_const_exprs/object-safety-err-ret.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Foo` cannot be made into an object LL | fn use_dyn(v: &dyn Foo) { | ^^^^^^^ `Foo` cannot be made into an object | - = help: consider moving `test` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-err-ret.rs:8:23 | @@ -12,6 +11,7 @@ LL | trait Foo { | --- this trait cannot be made into an object... LL | fn test(&self) -> [u8; bar::()]; | ^^^^^^^^^^^^^^^^^^^ ...because method `test` references the `Self` type in its return type + = help: consider moving `test` to another trait error: aborting due to previous error diff --git a/src/test/ui/error-codes/E0038.stderr b/src/test/ui/error-codes/E0038.stderr index cead9776e4abb..3773d6f5234b0 100644 --- a/src/test/ui/error-codes/E0038.stderr +++ b/src/test/ui/error-codes/E0038.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Trait` cannot be made into an object LL | fn call_foo(x: Box) { | ^^^^^^^^^ `Trait` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/E0038.rs:2:22 | @@ -12,6 +11,7 @@ LL | trait Trait { | ----- this trait cannot be made into an object... LL | fn foo(&self) -> Self; | ^^^^ ...because method `foo` references the `Self` type in its return type + = help: consider moving `foo` to another trait error: aborting due to previous error diff --git a/src/test/ui/feature-gates/feature-gate-object_safe_for_dispatch.stderr b/src/test/ui/feature-gates/feature-gate-object_safe_for_dispatch.stderr index a3bd65e518e4c..72cb4cc843cc4 100644 --- a/src/test/ui/feature-gates/feature-gate-object_safe_for_dispatch.stderr +++ b/src/test/ui/feature-gates/feature-gate-object_safe_for_dispatch.stderr @@ -40,7 +40,6 @@ error[E0038]: the trait `NonObjectSafe3` cannot be made into an object LL | fn takes_non_object_safe_box(obj: Box) { | ^^^^^^^^^^^^^^^^^^ `NonObjectSafe3` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/feature-gate-object_safe_for_dispatch.rs:11:8 | @@ -48,6 +47,7 @@ LL | trait NonObjectSafe3 { | -------------- this trait cannot be made into an object... LL | fn foo(&self); | ^^^ ...because method `foo` has generic type parameters + = help: consider moving `foo` to another trait error[E0038]: the trait `NonObjectSafe4` cannot be made into an object --> $DIR/feature-gate-object_safe_for_dispatch.rs:31:35 @@ -55,7 +55,6 @@ error[E0038]: the trait `NonObjectSafe4` cannot be made into an object LL | fn return_non_object_safe_rc() -> std::rc::Rc { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `NonObjectSafe4` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/feature-gate-object_safe_for_dispatch.rs:15:22 | @@ -63,6 +62,7 @@ LL | trait NonObjectSafe4 { | -------------- this trait cannot be made into an object... LL | fn foo(&self, s: &Self); | ^^^^^ ...because method `foo` references the `Self` type in this parameter + = help: consider moving `foo` to another trait error[E0038]: the trait `NonObjectSafe1` cannot be made into an object --> $DIR/feature-gate-object_safe_for_dispatch.rs:38:16 diff --git a/src/test/ui/generic-associated-types/gat-in-trait-path.stderr b/src/test/ui/generic-associated-types/gat-in-trait-path.stderr index 8651789688eaa..a55642490f975 100644 --- a/src/test/ui/generic-associated-types/gat-in-trait-path.stderr +++ b/src/test/ui/generic-associated-types/gat-in-trait-path.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Foo` cannot be made into an object LL | fn f(_arg : Box Foo = &'a ()>>) {} | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `Foo` cannot be made into an object | - = help: consider moving `A` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/gat-in-trait-path.rs:5:10 | @@ -12,6 +11,7 @@ LL | trait Foo { | --- this trait cannot be made into an object... LL | type A<'a> where Self: 'a; | ^ ...because it contains the generic associated type `A` + = help: consider moving `A` to another trait error: aborting due to previous error diff --git a/src/test/ui/generic-associated-types/issue-67510-pass.stderr b/src/test/ui/generic-associated-types/issue-67510-pass.stderr index b4b89ab047363..7dd1bdf891eb5 100644 --- a/src/test/ui/generic-associated-types/issue-67510-pass.stderr +++ b/src/test/ui/generic-associated-types/issue-67510-pass.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `X` cannot be made into an object LL | fn _func1<'a>(_x: Box=&'a ()>>) {} | ^^^^^^^^^^^^^^^^^^^ `X` cannot be made into an object | - = help: consider moving `Y` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-67510-pass.rs:4:10 | @@ -12,6 +11,7 @@ LL | trait X { | - this trait cannot be made into an object... LL | type Y<'a>; | ^ ...because it contains the generic associated type `Y` + = help: consider moving `Y` to another trait error: aborting due to previous error diff --git a/src/test/ui/generic-associated-types/issue-76535.stderr b/src/test/ui/generic-associated-types/issue-76535.stderr index 246454f0612db..0a7eb5dde6009 100644 --- a/src/test/ui/generic-associated-types/issue-76535.stderr +++ b/src/test/ui/generic-associated-types/issue-76535.stderr @@ -20,7 +20,6 @@ error[E0038]: the trait `SuperTrait` cannot be made into an object LL | let sub: Box> = Box::new(SuperStruct::new(0)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` cannot be made into an object | - = help: consider moving `SubType` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-76535.rs:6:10 | @@ -28,6 +27,7 @@ LL | pub trait SuperTrait { | ---------- this trait cannot be made into an object... LL | type SubType<'a>: SubTrait; | ^^^^^^^ ...because it contains the generic associated type `SubType` + = help: consider moving `SubType` to another trait error[E0038]: the trait `SuperTrait` cannot be made into an object --> $DIR/issue-76535.rs:36:57 @@ -35,7 +35,6 @@ error[E0038]: the trait `SuperTrait` cannot be made into an object LL | let sub: Box> = Box::new(SuperStruct::new(0)); | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `SuperTrait` cannot be made into an object | - = help: consider moving `SubType` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-76535.rs:6:10 | @@ -43,6 +42,7 @@ LL | pub trait SuperTrait { | ---------- this trait cannot be made into an object... LL | type SubType<'a>: SubTrait; | ^^^^^^^ ...because it contains the generic associated type `SubType` + = help: consider moving `SubType` to another trait = note: required because of the requirements on the impl of `CoerceUnsized>>>` for `Box` = note: required by cast to type `Box>>` diff --git a/src/test/ui/generic-associated-types/issue-78671.stderr b/src/test/ui/generic-associated-types/issue-78671.stderr index b92730839568d..17dd0ff4a0c94 100644 --- a/src/test/ui/generic-associated-types/issue-78671.stderr +++ b/src/test/ui/generic-associated-types/issue-78671.stderr @@ -20,7 +20,6 @@ error[E0038]: the trait `CollectionFamily` cannot be made into an object LL | Box::new(Family) as &dyn CollectionFamily | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `CollectionFamily` cannot be made into an object | - = help: consider moving `Member` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-78671.rs:4:10 | @@ -28,6 +27,7 @@ LL | trait CollectionFamily { | ---------------- this trait cannot be made into an object... LL | type Member; | ^^^^^^ ...because it contains the generic associated type `Member` + = help: consider moving `Member` to another trait error: aborting due to 2 previous errors diff --git a/src/test/ui/generic-associated-types/issue-79422.stderr b/src/test/ui/generic-associated-types/issue-79422.stderr index 8d8ef6bf83685..b6f856a97e725 100644 --- a/src/test/ui/generic-associated-types/issue-79422.stderr +++ b/src/test/ui/generic-associated-types/issue-79422.stderr @@ -20,7 +20,6 @@ error[E0038]: the trait `MapLike` cannot be made into an object LL | as Box>>; | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `MapLike` cannot be made into an object | - = help: consider moving `VRefCont` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-79422.rs:20:10 | @@ -28,6 +27,7 @@ LL | trait MapLike { | ------- this trait cannot be made into an object... LL | type VRefCont<'a>: RefCont<'a, V>; | ^^^^^^^^ ...because it contains the generic associated type `VRefCont` + = help: consider moving `VRefCont` to another trait error[E0038]: the trait `MapLike` cannot be made into an object --> $DIR/issue-79422.rs:41:13 @@ -35,7 +35,6 @@ error[E0038]: the trait `MapLike` cannot be made into an object LL | let m = Box::new(std::collections::BTreeMap::::new()) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `MapLike` cannot be made into an object | - = help: consider moving `VRefCont` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-79422.rs:20:10 | @@ -43,6 +42,7 @@ LL | trait MapLike { | ------- this trait cannot be made into an object... LL | type VRefCont<'a>: RefCont<'a, V>; | ^^^^^^^^ ...because it contains the generic associated type `VRefCont` + = help: consider moving `VRefCont` to another trait = note: required because of the requirements on the impl of `CoerceUnsized + 'static)>>>` for `Box>` = note: required by cast to type `Box + 'static)>>` diff --git a/src/test/ui/generic-associated-types/trait-objects.stderr b/src/test/ui/generic-associated-types/trait-objects.stderr index 6429bb8159e1f..5ab37910207ca 100644 --- a/src/test/ui/generic-associated-types/trait-objects.stderr +++ b/src/test/ui/generic-associated-types/trait-objects.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `StreamingIterator` cannot be made into an object LL | fn min_size(x: &mut dyn for<'a> StreamingIterator = &'a i32>) -> usize { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ `StreamingIterator` cannot be made into an object | - = help: consider moving `Item` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/trait-objects.rs:4:10 | @@ -12,6 +11,7 @@ LL | trait StreamingIterator { | ----------------- this trait cannot be made into an object... LL | type Item<'a> where Self: 'a; | ^^^^ ...because it contains the generic associated type `Item` + = help: consider moving `Item` to another trait error: aborting due to previous error diff --git a/src/test/ui/issues/issue-18959.stderr b/src/test/ui/issues/issue-18959.stderr index 2a5416ce85ba6..b9e27873636c3 100644 --- a/src/test/ui/issues/issue-18959.stderr +++ b/src/test/ui/issues/issue-18959.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | fn foo(b: &dyn Bar) { | ^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-18959.rs:1:20 | @@ -12,6 +11,7 @@ LL | pub trait Foo { fn foo(&self, ext_thing: &T); } | ^^^ ...because method `foo` has generic type parameters LL | pub trait Bar: Foo { } | --- this trait cannot be made into an object... + = help: consider moving `foo` to another trait error: aborting due to previous error diff --git a/src/test/ui/issues/issue-19538.stderr b/src/test/ui/issues/issue-19538.stderr index 555d0ff0dc787..7b37e1f95dcc6 100644 --- a/src/test/ui/issues/issue-19538.stderr +++ b/src/test/ui/issues/issue-19538.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | let test: &mut dyn Bar = &mut thing; | ^^^^^^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-19538.rs:2:8 | @@ -13,6 +12,7 @@ LL | fn foo(&self, val: T); ... LL | trait Bar: Foo { } | --- this trait cannot be made into an object... + = help: consider moving `foo` to another trait error[E0038]: the trait `Bar` cannot be made into an object --> $DIR/issue-19538.rs:17:30 @@ -20,7 +20,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | let test: &mut dyn Bar = &mut thing; | ^^^^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-19538.rs:2:8 | @@ -29,6 +28,7 @@ LL | fn foo(&self, val: T); ... LL | trait Bar: Foo { } | --- this trait cannot be made into an object... + = help: consider moving `foo` to another trait = note: required because of the requirements on the impl of `CoerceUnsized<&mut dyn Bar>` for `&mut Thing` = note: required by cast to type `&mut dyn Bar` diff --git a/src/test/ui/issues/issue-34255-1.rs b/src/test/ui/issues/issue-34255-1.rs index b1071934bb2f3..c70cd8b5077a9 100644 --- a/src/test/ui/issues/issue-34255-1.rs +++ b/src/test/ui/issues/issue-34255-1.rs @@ -6,5 +6,5 @@ enum Test { fn main() { Test::Drill(field: 42); - //~^ ERROR expected type, found + //~^ ERROR invalid `struct` delimiters or `fn` call arguments } diff --git a/src/test/ui/issues/issue-34255-1.stderr b/src/test/ui/issues/issue-34255-1.stderr index c8bad3b3bb502..fbff75e37d9f0 100644 --- a/src/test/ui/issues/issue-34255-1.stderr +++ b/src/test/ui/issues/issue-34255-1.stderr @@ -1,13 +1,18 @@ -error: expected type, found `42` - --> $DIR/issue-34255-1.rs:8:24 +error: invalid `struct` delimiters or `fn` call arguments + --> $DIR/issue-34255-1.rs:8:5 | LL | Test::Drill(field: 42); - | - ^^ expected type - | | - | tried to parse a type due to this type ascription + | ^^^^^^^^^^^^^^^^^^^^^^ | - = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `: ` - = note: see issue #23416 for more information +help: if `Test::Drill` is a struct, use braces as delimiters + | +LL | Test::Drill { field: 42 }; + | ~ ~ +help: if `Test::Drill` is a function, use the arguments directly + | +LL - Test::Drill(field: 42); +LL + Test::Drill(42); + | error: aborting due to previous error diff --git a/src/test/ui/object-safety/object-safety-associated-consts.curr.stderr b/src/test/ui/object-safety/object-safety-associated-consts.curr.stderr index 35ec586892c05..9dd144fee24a6 100644 --- a/src/test/ui/object-safety/object-safety-associated-consts.curr.stderr +++ b/src/test/ui/object-safety/object-safety-associated-consts.curr.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | fn make_bar(t: &T) -> &dyn Bar { | ^^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `X` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-associated-consts.rs:9:11 | @@ -12,6 +11,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | const X: usize; | ^ ...because it contains this associated `const` + = help: consider moving `X` to another trait error: aborting due to previous error diff --git a/src/test/ui/object-safety/object-safety-associated-consts.object_safe_for_dispatch.stderr b/src/test/ui/object-safety/object-safety-associated-consts.object_safe_for_dispatch.stderr index d51734ed2316b..9ba3b251e6603 100644 --- a/src/test/ui/object-safety/object-safety-associated-consts.object_safe_for_dispatch.stderr +++ b/src/test/ui/object-safety/object-safety-associated-consts.object_safe_for_dispatch.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | t | ^ `Bar` cannot be made into an object | - = help: consider moving `X` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-associated-consts.rs:9:11 | @@ -12,6 +11,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | const X: usize; | ^ ...because it contains this associated `const` + = help: consider moving `X` to another trait = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Bar>` for `&T` = note: required by cast to type `&dyn Bar` diff --git a/src/test/ui/object-safety/object-safety-generics.curr.stderr b/src/test/ui/object-safety/object-safety-generics.curr.stderr index 8d6094c514429..345950f1ae670 100644 --- a/src/test/ui/object-safety/object-safety-generics.curr.stderr +++ b/src/test/ui/object-safety/object-safety-generics.curr.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | fn make_bar(t: &T) -> &dyn Bar { | ^^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `bar` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-generics.rs:10:8 | @@ -12,6 +11,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | fn bar(&self, t: T); | ^^^ ...because method `bar` has generic type parameters + = help: consider moving `bar` to another trait error[E0038]: the trait `Bar` cannot be made into an object --> $DIR/object-safety-generics.rs:24:39 @@ -19,7 +19,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | fn make_bar_explicit(t: &T) -> &dyn Bar { | ^^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `bar` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-generics.rs:10:8 | @@ -27,6 +26,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | fn bar(&self, t: T); | ^^^ ...because method `bar` has generic type parameters + = help: consider moving `bar` to another trait error: aborting due to 2 previous errors diff --git a/src/test/ui/object-safety/object-safety-generics.object_safe_for_dispatch.stderr b/src/test/ui/object-safety/object-safety-generics.object_safe_for_dispatch.stderr index 3d2b2bb228cb5..86355627c796f 100644 --- a/src/test/ui/object-safety/object-safety-generics.object_safe_for_dispatch.stderr +++ b/src/test/ui/object-safety/object-safety-generics.object_safe_for_dispatch.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | t | ^ `Bar` cannot be made into an object | - = help: consider moving `bar` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-generics.rs:10:8 | @@ -12,6 +11,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | fn bar(&self, t: T); | ^^^ ...because method `bar` has generic type parameters + = help: consider moving `bar` to another trait = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Bar>` for `&T` = note: required by cast to type `&dyn Bar` @@ -21,7 +21,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | t as &dyn Bar | ^ `Bar` cannot be made into an object | - = help: consider moving `bar` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-generics.rs:10:8 | @@ -29,6 +28,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | fn bar(&self, t: T); | ^^^ ...because method `bar` has generic type parameters + = help: consider moving `bar` to another trait = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Bar>` for `&T` = note: required by cast to type `&dyn Bar` diff --git a/src/test/ui/object-safety/object-safety-mentions-Self.curr.stderr b/src/test/ui/object-safety/object-safety-mentions-Self.curr.stderr index 336929702e6cd..f91c9b9856055 100644 --- a/src/test/ui/object-safety/object-safety-mentions-Self.curr.stderr +++ b/src/test/ui/object-safety/object-safety-mentions-Self.curr.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | fn make_bar(t: &T) -> &dyn Bar { | ^^^^^^^^ `Bar` cannot be made into an object | - = help: consider moving `bar` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-mentions-Self.rs:11:22 | @@ -12,6 +11,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | fn bar(&self, x: &Self); | ^^^^^ ...because method `bar` references the `Self` type in this parameter + = help: consider moving `bar` to another trait error[E0038]: the trait `Baz` cannot be made into an object --> $DIR/object-safety-mentions-Self.rs:28:30 @@ -19,7 +19,6 @@ error[E0038]: the trait `Baz` cannot be made into an object LL | fn make_baz(t: &T) -> &dyn Baz { | ^^^^^^^^ `Baz` cannot be made into an object | - = help: consider moving `baz` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-mentions-Self.rs:15:22 | @@ -27,6 +26,7 @@ LL | trait Baz { | --- this trait cannot be made into an object... LL | fn baz(&self) -> Self; | ^^^^ ...because method `baz` references the `Self` type in its return type + = help: consider moving `baz` to another trait error: aborting due to 2 previous errors diff --git a/src/test/ui/object-safety/object-safety-mentions-Self.object_safe_for_dispatch.stderr b/src/test/ui/object-safety/object-safety-mentions-Self.object_safe_for_dispatch.stderr index 6e7896e309cc6..f48628c9d1111 100644 --- a/src/test/ui/object-safety/object-safety-mentions-Self.object_safe_for_dispatch.stderr +++ b/src/test/ui/object-safety/object-safety-mentions-Self.object_safe_for_dispatch.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `Bar` cannot be made into an object LL | t | ^ `Bar` cannot be made into an object | - = help: consider moving `bar` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-mentions-Self.rs:11:22 | @@ -12,6 +11,7 @@ LL | trait Bar { | --- this trait cannot be made into an object... LL | fn bar(&self, x: &Self); | ^^^^^ ...because method `bar` references the `Self` type in this parameter + = help: consider moving `bar` to another trait = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Bar>` for `&T` = note: required by cast to type `&dyn Bar` @@ -21,7 +21,6 @@ error[E0038]: the trait `Baz` cannot be made into an object LL | t | ^ `Baz` cannot be made into an object | - = help: consider moving `baz` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-safety-mentions-Self.rs:15:22 | @@ -29,6 +28,7 @@ LL | trait Baz { | --- this trait cannot be made into an object... LL | fn baz(&self) -> Self; | ^^^^ ...because method `baz` references the `Self` type in its return type + = help: consider moving `baz` to another trait = note: required because of the requirements on the impl of `CoerceUnsized<&dyn Baz>` for `&T` = note: required by cast to type `&dyn Baz` diff --git a/src/test/ui/parser/issue-44406.rs b/src/test/ui/parser/issue-44406.rs index 83bbf884a4ff8..a5b7e83a01622 100644 --- a/src/test/ui/parser/issue-44406.rs +++ b/src/test/ui/parser/issue-44406.rs @@ -1,10 +1,10 @@ macro_rules! foo { ($rest: tt) => { - bar(baz: $rest) + bar(baz: $rest) //~ ERROR invalid `struct` delimiters or `fn` call arguments } } fn main() { - foo!(true); //~ ERROR expected type, found keyword + foo!(true); //~^ ERROR expected identifier, found keyword } diff --git a/src/test/ui/parser/issue-44406.stderr b/src/test/ui/parser/issue-44406.stderr index 372387131e54b..862026408ef7f 100644 --- a/src/test/ui/parser/issue-44406.stderr +++ b/src/test/ui/parser/issue-44406.stderr @@ -9,17 +9,25 @@ help: you can escape reserved keywords to use them as identifiers LL | foo!(r#true); | ~~~~~~ -error: expected type, found keyword `true` - --> $DIR/issue-44406.rs:8:10 +error: invalid `struct` delimiters or `fn` call arguments + --> $DIR/issue-44406.rs:3:9 | LL | bar(baz: $rest) - | - help: try using a semicolon: `;` + | ^^^^^^^^^^^^^^^ ... LL | foo!(true); - | ^^^^ expected type + | ----------- in this macro invocation + | + = note: this error originates in the macro `foo` (in Nightly builds, run with -Z macro-backtrace for more info) +help: if `bar` is a struct, use braces as delimiters + | +LL | bar { } + | ~ +help: if `bar` is a function, use the arguments directly | - = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `: ` - = note: see issue #23416 for more information +LL - bar(baz: $rest) +LL + bar(true); + | error: aborting due to 2 previous errors diff --git a/src/test/ui/parser/recover-from-bad-variant.rs b/src/test/ui/parser/recover-from-bad-variant.rs index 1bcef450bb9be..e8887147cbc86 100644 --- a/src/test/ui/parser/recover-from-bad-variant.rs +++ b/src/test/ui/parser/recover-from-bad-variant.rs @@ -5,7 +5,7 @@ enum Enum { fn main() { let x = Enum::Foo(a: 3, b: 4); - //~^ ERROR expected type, found `3` + //~^ ERROR invalid `struct` delimiters or `fn` call arguments match x { Enum::Foo(a, b) => {} //~^ ERROR expected tuple struct or tuple variant, found struct variant `Enum::Foo` diff --git a/src/test/ui/parser/recover-from-bad-variant.stderr b/src/test/ui/parser/recover-from-bad-variant.stderr index 61ea3695eee0b..8cb71069bdaac 100644 --- a/src/test/ui/parser/recover-from-bad-variant.stderr +++ b/src/test/ui/parser/recover-from-bad-variant.stderr @@ -1,13 +1,18 @@ -error: expected type, found `3` - --> $DIR/recover-from-bad-variant.rs:7:26 +error: invalid `struct` delimiters or `fn` call arguments + --> $DIR/recover-from-bad-variant.rs:7:13 | LL | let x = Enum::Foo(a: 3, b: 4); - | - ^ expected type - | | - | tried to parse a type due to this type ascription + | ^^^^^^^^^^^^^^^^^^^^^ | - = note: `#![feature(type_ascription)]` lets you annotate an expression with a type: `: ` - = note: see issue #23416 for more information +help: if `Enum::Foo` is a struct, use braces as delimiters + | +LL | let x = Enum::Foo { a: 3, b: 4 }; + | ~ ~ +help: if `Enum::Foo` is a function, use the arguments directly + | +LL - let x = Enum::Foo(a: 3, b: 4); +LL + let x = Enum::Foo(3, 4); + | error[E0532]: expected tuple struct or tuple variant, found struct variant `Enum::Foo` --> $DIR/recover-from-bad-variant.rs:10:9 diff --git a/src/test/ui/suggestions/object-unsafe-trait-references-self.stderr b/src/test/ui/suggestions/object-unsafe-trait-references-self.stderr index f332b7213d8bc..54f19fe9da445 100644 --- a/src/test/ui/suggestions/object-unsafe-trait-references-self.stderr +++ b/src/test/ui/suggestions/object-unsafe-trait-references-self.stderr @@ -4,8 +4,6 @@ error[E0038]: the trait `Trait` cannot be made into an object LL | fn bar(x: &dyn Trait) {} | ^^^^^^^^^ `Trait` cannot be made into an object | - = help: consider moving `baz` to another trait - = help: consider moving `bat` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/object-unsafe-trait-references-self.rs:2:22 | @@ -15,6 +13,8 @@ LL | fn baz(&self, _: Self) {} | ^^^^ ...because method `baz` references the `Self` type in this parameter LL | fn bat(&self) -> Self {} | ^^^^ ...because method `bat` references the `Self` type in its return type + = help: consider moving `baz` to another trait + = help: consider moving `bat` to another trait error[E0038]: the trait `Other` cannot be made into an object --> $DIR/object-unsafe-trait-references-self.rs:10:12 diff --git a/src/test/ui/traits/item-privacy.stderr b/src/test/ui/traits/item-privacy.stderr index 2260dcfc70ea3..ef5d5cdff8f4b 100644 --- a/src/test/ui/traits/item-privacy.stderr +++ b/src/test/ui/traits/item-privacy.stderr @@ -127,9 +127,6 @@ error[E0038]: the trait `assoc_const::C` cannot be made into an object LL | ::A; | ^^^^^ `assoc_const::C` cannot be made into an object | - = help: consider moving `C` to another trait - = help: consider moving `B` to another trait - = help: consider moving `A` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/item-privacy.rs:25:15 | @@ -143,6 +140,9 @@ LL | pub trait C: A + B { | - this trait cannot be made into an object... LL | const C: u8 = 0; | ^ ...because it contains this associated `const` + = help: consider moving `C` to another trait + = help: consider moving `A` to another trait + = help: consider moving `B` to another trait error[E0223]: ambiguous associated type --> $DIR/item-privacy.rs:115:12 diff --git a/src/test/ui/traits/test-2.stderr b/src/test/ui/traits/test-2.stderr index 0289424510f97..d943b48fd0082 100644 --- a/src/test/ui/traits/test-2.stderr +++ b/src/test/ui/traits/test-2.stderr @@ -32,8 +32,6 @@ error[E0038]: the trait `bar` cannot be made into an object LL | (box 10 as Box).dup(); | ^^^^^^^^^^^^ `bar` cannot be made into an object | - = help: consider moving `dup` to another trait - = help: consider moving `blah` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/test-2.rs:4:30 | @@ -42,6 +40,8 @@ LL | trait bar { fn dup(&self) -> Self; fn blah(&self); } | | | | | ...because method `dup` references the `Self` type in its return type | this trait cannot be made into an object... + = help: consider moving `dup` to another trait + = help: consider moving `blah` to another trait error[E0038]: the trait `bar` cannot be made into an object --> $DIR/test-2.rs:13:6 @@ -49,8 +49,6 @@ error[E0038]: the trait `bar` cannot be made into an object LL | (box 10 as Box).dup(); | ^^^^^^ `bar` cannot be made into an object | - = help: consider moving `dup` to another trait - = help: consider moving `blah` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/test-2.rs:4:30 | @@ -59,6 +57,8 @@ LL | trait bar { fn dup(&self) -> Self; fn blah(&self); } | | | | | ...because method `dup` references the `Self` type in its return type | this trait cannot be made into an object... + = help: consider moving `dup` to another trait + = help: consider moving `blah` to another trait = note: required because of the requirements on the impl of `CoerceUnsized>` for `Box<{integer}>` = note: required by cast to type `Box` diff --git a/src/test/ui/type/type-parameter-defaults-referencing-Self-ppaux.stderr b/src/test/ui/type/type-parameter-defaults-referencing-Self-ppaux.stderr index 2de5f6eb0f03a..8a296dc7ee6e1 100644 --- a/src/test/ui/type/type-parameter-defaults-referencing-Self-ppaux.stderr +++ b/src/test/ui/type/type-parameter-defaults-referencing-Self-ppaux.stderr @@ -16,7 +16,6 @@ error[E0038]: the trait `MyAdd` cannot be made into an object LL | let y = x as dyn MyAdd; | ^^^^^^^^^^^^^^ `MyAdd` cannot be made into an object | - = help: consider moving `add` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/type-parameter-defaults-referencing-Self-ppaux.rs:6:55 | @@ -24,6 +23,7 @@ LL | trait MyAdd { fn add(&self, other: &Rhs) -> Self; } | ----- ^^^^ ...because method `add` references the `Self` type in its return type | | | this trait cannot be made into an object... + = help: consider moving `add` to another trait error: aborting due to 2 previous errors diff --git a/src/test/ui/wf/issue-87495.stderr b/src/test/ui/wf/issue-87495.stderr index 010200b5ded1f..c924cd87997e1 100644 --- a/src/test/ui/wf/issue-87495.stderr +++ b/src/test/ui/wf/issue-87495.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `T` cannot be made into an object LL | const CONST: (bool, dyn T); | ^^^^^ `T` cannot be made into an object | - = help: consider moving `CONST` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/issue-87495.rs:4:11 | @@ -12,6 +11,7 @@ LL | trait T { | - this trait cannot be made into an object... LL | const CONST: (bool, dyn T); | ^^^^^ ...because it contains this associated `const` + = help: consider moving `CONST` to another trait error: aborting due to previous error diff --git a/src/test/ui/wf/wf-object-safe.stderr b/src/test/ui/wf/wf-object-safe.stderr index 9b749f88fb810..64969fbe3203e 100644 --- a/src/test/ui/wf/wf-object-safe.stderr +++ b/src/test/ui/wf/wf-object-safe.stderr @@ -4,7 +4,6 @@ error[E0038]: the trait `A` cannot be made into an object LL | let _x: &dyn A; | ^^^^^^ `A` cannot be made into an object | - = help: consider moving `foo` to another trait note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit --> $DIR/wf-object-safe.rs:5:23 | @@ -12,6 +11,7 @@ LL | trait A { | - this trait cannot be made into an object... LL | fn foo(&self, _x: &Self); | ^^^^^ ...because method `foo` references the `Self` type in this parameter + = help: consider moving `foo` to another trait error: aborting due to previous error