diff options
18 files changed, 193 insertions, 84 deletions
diff --git a/compiler/rustc_borrowck/src/diagnostics/mod.rs b/compiler/rustc_borrowck/src/diagnostics/mod.rs index 34bed375cb9..b67dba3af96 100644 --- a/compiler/rustc_borrowck/src/diagnostics/mod.rs +++ b/compiler/rustc_borrowck/src/diagnostics/mod.rs @@ -51,7 +51,7 @@ mod conflict_errors; mod explain_borrow; mod move_errors; mod mutability_errors; -mod opaque_suggestions; +mod opaque_types; mod region_errors; pub(crate) use bound_region_errors::{ToUniverseInfo, UniverseInfo}; diff --git a/compiler/rustc_borrowck/src/diagnostics/opaque_suggestions.rs b/compiler/rustc_borrowck/src/diagnostics/opaque_types.rs index 7192a889adc..83fe4a9f98f 100644 --- a/compiler/rustc_borrowck/src/diagnostics/opaque_suggestions.rs +++ b/compiler/rustc_borrowck/src/diagnostics/opaque_types.rs @@ -18,9 +18,28 @@ use rustc_trait_selection::errors::impl_trait_overcapture_suggestion; use crate::MirBorrowckCtxt; use crate::borrow_set::BorrowData; use crate::consumers::RegionInferenceContext; +use crate::region_infer::opaque_types::DeferredOpaqueTypeError; use crate::type_check::Locations; impl<'infcx, 'tcx> MirBorrowckCtxt<'_, 'infcx, 'tcx> { + pub(crate) fn report_opaque_type_errors(&mut self, errors: Vec<DeferredOpaqueTypeError<'tcx>>) { + if errors.is_empty() { + return; + } + let mut guar = None; + for error in errors { + guar = Some(match error { + DeferredOpaqueTypeError::InvalidOpaqueTypeArgs(err) => err.report(self.infcx), + DeferredOpaqueTypeError::LifetimeMismatchOpaqueParam(err) => { + self.infcx.dcx().emit_err(err) + } + }); + } + let guar = guar.unwrap(); + self.root_cx.set_tainted_by_errors(guar); + self.infcx.set_tainted_by_errors(guar); + } + /// Try to note when an opaque is involved in a borrowck error and that /// opaque captures lifetimes due to edition 2024. // FIXME: This code is otherwise somewhat general, and could easily be adapted diff --git a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs index b130cf8ed27..2b74f1a48f7 100644 --- a/compiler/rustc_borrowck/src/diagnostics/region_errors.rs +++ b/compiler/rustc_borrowck/src/diagnostics/region_errors.rs @@ -92,9 +92,6 @@ impl<'tcx> RegionErrors<'tcx> { ) -> impl Iterator<Item = (RegionErrorKind<'tcx>, ErrorGuaranteed)> { self.0.into_iter() } - pub(crate) fn has_errors(&self) -> Option<ErrorGuaranteed> { - self.0.get(0).map(|x| x.1) - } } impl std::fmt::Debug for RegionErrors<'_> { diff --git a/compiler/rustc_borrowck/src/lib.rs b/compiler/rustc_borrowck/src/lib.rs index 752ff8e6f58..d76d6a04e6e 100644 --- a/compiler/rustc_borrowck/src/lib.rs +++ b/compiler/rustc_borrowck/src/lib.rs @@ -375,7 +375,7 @@ fn do_mir_borrowck<'tcx>( polonius_context, ); - regioncx.infer_opaque_types(root_cx, &infcx, opaque_type_values); + let opaque_type_errors = regioncx.infer_opaque_types(root_cx, &infcx, opaque_type_values); // Dump MIR results into a file, if that is enabled. This lets us // write unit-tests, as well as helping with debugging. @@ -471,7 +471,11 @@ fn do_mir_borrowck<'tcx>( }; // Compute and report region errors, if any. - mbcx.report_region_errors(nll_errors); + if nll_errors.is_empty() { + mbcx.report_opaque_type_errors(opaque_type_errors); + } else { + mbcx.report_region_errors(nll_errors); + } let (mut flow_analysis, flow_entry_states) = get_flow_results(tcx, body, &move_data, &borrow_set, ®ioncx); diff --git a/compiler/rustc_borrowck/src/nll.rs b/compiler/rustc_borrowck/src/nll.rs index ca6092e70d2..8608a8a3a66 100644 --- a/compiler/rustc_borrowck/src/nll.rs +++ b/compiler/rustc_borrowck/src/nll.rs @@ -148,11 +148,6 @@ pub(crate) fn compute_regions<'tcx>( let (closure_region_requirements, nll_errors) = regioncx.solve(infcx, body, polonius_output.clone()); - if let Some(guar) = nll_errors.has_errors() { - // Suppress unhelpful extra errors in `infer_opaque_types`. - infcx.set_tainted_by_errors(guar); - } - NllOutput { regioncx, polonius_input: polonius_facts.map(Box::new), diff --git a/compiler/rustc_borrowck/src/region_infer/mod.rs b/compiler/rustc_borrowck/src/region_infer/mod.rs index f1320048533..f4dc9627b35 100644 --- a/compiler/rustc_borrowck/src/region_infer/mod.rs +++ b/compiler/rustc_borrowck/src/region_infer/mod.rs @@ -44,7 +44,7 @@ use crate::{ mod dump_mir; mod graphviz; -mod opaque_types; +pub(crate) mod opaque_types; mod reverse_sccs; pub(crate) mod values; diff --git a/compiler/rustc_borrowck/src/region_infer/opaque_types.rs b/compiler/rustc_borrowck/src/region_infer/opaque_types.rs index 6270e6d9a60..23c4554aa15 100644 --- a/compiler/rustc_borrowck/src/region_infer/opaque_types.rs +++ b/compiler/rustc_borrowck/src/region_infer/opaque_types.rs @@ -6,7 +6,9 @@ use rustc_middle::ty::{ TypeVisitableExt, fold_regions, }; use rustc_span::Span; -use rustc_trait_selection::opaque_types::check_opaque_type_parameter_valid; +use rustc_trait_selection::opaque_types::{ + InvalidOpaqueTypeArgs, check_opaque_type_parameter_valid, +}; use tracing::{debug, instrument}; use super::RegionInferenceContext; @@ -14,6 +16,11 @@ use crate::BorrowCheckRootCtxt; use crate::session_diagnostics::LifetimeMismatchOpaqueParam; use crate::universal_regions::RegionClassification; +pub(crate) enum DeferredOpaqueTypeError<'tcx> { + InvalidOpaqueTypeArgs(InvalidOpaqueTypeArgs<'tcx>), + LifetimeMismatchOpaqueParam(LifetimeMismatchOpaqueParam<'tcx>), +} + impl<'tcx> RegionInferenceContext<'tcx> { /// Resolve any opaque types that were encountered while borrow checking /// this item. This is then used to get the type in the `type_of` query. @@ -58,13 +65,14 @@ impl<'tcx> RegionInferenceContext<'tcx> { /// /// [rustc-dev-guide chapter]: /// https://rustc-dev-guide.rust-lang.org/opaque-types-region-infer-restrictions.html - #[instrument(level = "debug", skip(self, root_cx, infcx), ret)] + #[instrument(level = "debug", skip(self, root_cx, infcx))] pub(crate) fn infer_opaque_types( &self, root_cx: &mut BorrowCheckRootCtxt<'tcx>, infcx: &InferCtxt<'tcx>, opaque_ty_decls: FxIndexMap<OpaqueTypeKey<'tcx>, OpaqueHiddenType<'tcx>>, - ) { + ) -> Vec<DeferredOpaqueTypeError<'tcx>> { + let mut errors = Vec::new(); let mut decls_modulo_regions: FxIndexMap<OpaqueTypeKey<'tcx>, (OpaqueTypeKey<'tcx>, Span)> = FxIndexMap::default(); @@ -124,8 +132,15 @@ impl<'tcx> RegionInferenceContext<'tcx> { }); debug!(?concrete_type); - let ty = - infcx.infer_opaque_definition_from_instantiation(opaque_type_key, concrete_type); + let ty = match infcx + .infer_opaque_definition_from_instantiation(opaque_type_key, concrete_type) + { + Ok(ty) => ty, + Err(err) => { + errors.push(DeferredOpaqueTypeError::InvalidOpaqueTypeArgs(err)); + continue; + } + }; // Sometimes, when the hidden type is an inference variable, it can happen that // the hidden type becomes the opaque type itself. In this case, this was an opaque @@ -149,25 +164,27 @@ impl<'tcx> RegionInferenceContext<'tcx> { // non-region parameters. This is necessary because within the new solver we perform // various query operations modulo regions, and thus could unsoundly select some impls // that don't hold. - if !ty.references_error() - && let Some((prev_decl_key, prev_span)) = decls_modulo_regions.insert( - infcx.tcx.erase_regions(opaque_type_key), - (opaque_type_key, concrete_type.span), - ) - && let Some((arg1, arg2)) = std::iter::zip( - prev_decl_key.iter_captured_args(infcx.tcx).map(|(_, arg)| arg), - opaque_type_key.iter_captured_args(infcx.tcx).map(|(_, arg)| arg), - ) - .find(|(arg1, arg2)| arg1 != arg2) + if let Some((prev_decl_key, prev_span)) = decls_modulo_regions.insert( + infcx.tcx.erase_regions(opaque_type_key), + (opaque_type_key, concrete_type.span), + ) && let Some((arg1, arg2)) = std::iter::zip( + prev_decl_key.iter_captured_args(infcx.tcx).map(|(_, arg)| arg), + opaque_type_key.iter_captured_args(infcx.tcx).map(|(_, arg)| arg), + ) + .find(|(arg1, arg2)| arg1 != arg2) { - infcx.dcx().emit_err(LifetimeMismatchOpaqueParam { - arg: arg1, - prev: arg2, - span: prev_span, - prev_span: concrete_type.span, - }); + errors.push(DeferredOpaqueTypeError::LifetimeMismatchOpaqueParam( + LifetimeMismatchOpaqueParam { + arg: arg1, + prev: arg2, + span: prev_span, + prev_span: concrete_type.span, + }, + )); } } + + errors } /// Map the regions in the type to named regions. This is similar to what @@ -260,19 +277,13 @@ impl<'tcx> InferCtxt<'tcx> { &self, opaque_type_key: OpaqueTypeKey<'tcx>, instantiated_ty: OpaqueHiddenType<'tcx>, - ) -> Ty<'tcx> { - if let Some(e) = self.tainted_by_errors() { - return Ty::new_error(self.tcx, e); - } - - if let Err(err) = check_opaque_type_parameter_valid( + ) -> Result<Ty<'tcx>, InvalidOpaqueTypeArgs<'tcx>> { + check_opaque_type_parameter_valid( self, opaque_type_key, instantiated_ty.span, DefiningScopeKind::MirBorrowck, - ) { - return Ty::new_error(self.tcx, err.report(self)); - } + )?; let definition_ty = instantiated_ty .remap_generic_params_to_declaration_params( @@ -282,10 +293,7 @@ impl<'tcx> InferCtxt<'tcx> { ) .ty; - if let Err(e) = definition_ty.error_reported() { - return Ty::new_error(self.tcx, e); - } - - definition_ty + definition_ty.error_reported()?; + Ok(definition_ty) } } diff --git a/tests/crashes/135528.rs b/tests/crashes/135528.rs deleted file mode 100644 index 171550e209e..00000000000 --- a/tests/crashes/135528.rs +++ /dev/null @@ -1,20 +0,0 @@ -//@ known-bug: #135528 -//@ compile-flags: -Zvalidate-mir -Zinline-mir=yes -#![feature(type_alias_impl_trait)] -type Tait = impl Copy; - -fn set(x: &isize) -> isize { - *x -} - -#[define_opaque(Tait)] -fn d(x: Tait) { - set(x); -} - -#[define_opaque(Tait)] -fn other_define() -> Tait { - () -} - -fn main() {} diff --git a/tests/ui/impl-trait/issues/type-error-post-normalization-test.rs b/tests/ui/impl-trait/issues/type-error-post-normalization-test.rs new file mode 100644 index 00000000000..0108bb23611 --- /dev/null +++ b/tests/ui/impl-trait/issues/type-error-post-normalization-test.rs @@ -0,0 +1,24 @@ +//@ compile-flags: -Zvalidate-mir -Zinline-mir=yes + +// This previously introduced a `{type_error}`` in the MIR body +// during the `PostAnalysisNormalize` pass. While the underlying issue +// #135528 did not get fixed, this reproducer no longer ICEs. + +#![feature(type_alias_impl_trait)] +type Tait = impl Copy; + +fn set(x: &isize) -> isize { + *x +} + +#[define_opaque(Tait)] +fn d(x: Tait) { + set(x); +} + +#[define_opaque(Tait)] +fn other_define() -> Tait { + () //~^ ERROR concrete type differs from previous defining opaque type use +} + +fn main() {} diff --git a/tests/ui/impl-trait/issues/type-error-post-normalization-test.stderr b/tests/ui/impl-trait/issues/type-error-post-normalization-test.stderr new file mode 100644 index 00000000000..7d63c1cfbd6 --- /dev/null +++ b/tests/ui/impl-trait/issues/type-error-post-normalization-test.stderr @@ -0,0 +1,14 @@ +error: concrete type differs from previous defining opaque type use + --> $DIR/type-error-post-normalization-test.rs:20:22 + | +LL | fn other_define() -> Tait { + | ^^^^ expected `&isize`, got `()` + | +note: previous use here + --> $DIR/type-error-post-normalization-test.rs:16:9 + | +LL | set(x); + | ^ + +error: aborting due to 1 previous error + diff --git a/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.rs b/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.rs index 4cf2d1ac4a6..80a4ab35527 100644 --- a/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.rs +++ b/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.rs @@ -41,6 +41,7 @@ mod capture_tait_complex_pass { #[define_opaque(Opq2)] fn test() -> Opq2 {} //~^ ERROR: expected generic lifetime parameter, found `'a` + //~| ERROR: expected generic lifetime parameter, found `'b` } // Same as the above, but make sure that different placeholder regions are not equal. @@ -80,6 +81,7 @@ mod constrain_pass { #[define_opaque(Opq2)] fn test() -> Opq2 {} //~^ ERROR: expected generic lifetime parameter, found `'a` + //~| ERROR: expected generic lifetime parameter, found `'a` } fn main() {} diff --git a/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.stderr b/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.stderr index 3614fc8f45c..665b9a91696 100644 --- a/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.stderr +++ b/tests/ui/rfcs/type-alias-impl-trait/higher-ranked-regions-basic.stderr @@ -36,8 +36,17 @@ LL | type Opq1<'a> = impl for<'b> Trait<'b, Ty = Opq0<'b>>; // <- Note 'b LL | fn test() -> Opq2 {} | ^^ +error[E0792]: expected generic lifetime parameter, found `'b` + --> $DIR/higher-ranked-regions-basic.rs:42:23 + | +LL | type Opq0<'a> = impl Sized; + | -- this generic parameter must be used with a generic lifetime parameter +... +LL | fn test() -> Opq2 {} + | ^^ + error[E0700]: hidden type for `capture_tait_complex_fail::Opq0<'a>` captures lifetime that does not appear in bounds - --> $DIR/higher-ranked-regions-basic.rs:53:23 + --> $DIR/higher-ranked-regions-basic.rs:54:23 | LL | type Opq0<'a> = impl Sized; | ---------- opaque type defined here @@ -48,7 +57,7 @@ LL | fn test() -> Opq2 {} | ^^ error[E0792]: expected generic lifetime parameter, found `'a` - --> $DIR/higher-ranked-regions-basic.rs:62:65 + --> $DIR/higher-ranked-regions-basic.rs:63:65 | LL | type Opq0<'a, 'b> = impl Sized; | -- this generic parameter must be used with a generic lifetime parameter @@ -57,7 +66,7 @@ LL | fn test() -> impl for<'a> Trait<'a, Ty = Opq0<'a, 'static>> {} | ^^ error[E0792]: expected generic lifetime parameter, found `'a` - --> $DIR/higher-ranked-regions-basic.rs:71:60 + --> $DIR/higher-ranked-regions-basic.rs:72:60 | LL | type Opq0<'a, 'b> = impl Sized; | -- this generic parameter must be used with a generic lifetime parameter @@ -66,7 +75,7 @@ LL | fn test() -> impl for<'a> Trait<'a, Ty = Opq0<'a, 'a>> {} | ^^ error[E0792]: expected generic lifetime parameter, found `'a` - --> $DIR/higher-ranked-regions-basic.rs:81:23 + --> $DIR/higher-ranked-regions-basic.rs:82:23 | LL | type Opq1<'a> = impl for<'b> Trait<'b, Ty = Opq0<'a, 'b>>; | -- this generic parameter must be used with a generic lifetime parameter @@ -74,7 +83,16 @@ LL | type Opq1<'a> = impl for<'b> Trait<'b, Ty = Opq0<'a, 'b>>; LL | fn test() -> Opq2 {} | ^^ -error: aborting due to 8 previous errors +error[E0792]: expected generic lifetime parameter, found `'a` + --> $DIR/higher-ranked-regions-basic.rs:82:23 + | +LL | type Opq0<'a, 'b> = impl Sized; + | -- this generic parameter must be used with a generic lifetime parameter +... +LL | fn test() -> Opq2 {} + | ^^ + +error: aborting due to 10 previous errors Some errors have detailed explanations: E0700, E0792. For more information about an error, try `rustc --explain E0700`. diff --git a/tests/ui/type-alias-impl-trait/hkl_forbidden.rs b/tests/ui/type-alias-impl-trait/hkl_forbidden.rs index 994adc476e2..72da2af96b8 100644 --- a/tests/ui/type-alias-impl-trait/hkl_forbidden.rs +++ b/tests/ui/type-alias-impl-trait/hkl_forbidden.rs @@ -8,7 +8,9 @@ type Opaque<'a> = impl Sized + 'a; #[define_opaque(Opaque)] fn test(s: &str) -> (impl Fn(&str) -> Opaque<'_>, impl Fn(&str) -> Opaque<'_>) { - (id, id) //~ ERROR expected generic lifetime parameter, found `'_` + (id, id) + //~^ ERROR expected generic lifetime parameter, found `'_` + //~| ERROR expected generic lifetime parameter, found `'_` } fn id2<'a, 'b>(s: (&'a str, &'b str)) -> (&'a str, &'b str) { @@ -19,7 +21,9 @@ type Opaque2<'a> = impl Sized + 'a; #[define_opaque(Opaque2)] fn test2() -> impl for<'a, 'b> Fn((&'a str, &'b str)) -> (Opaque2<'a>, Opaque2<'b>) { - id2 //~ ERROR expected generic lifetime parameter, found `'a` + id2 + //~^ ERROR expected generic lifetime parameter, found `'a` + //~| ERROR expected generic lifetime parameter, found `'b` } type Opaque3<'a> = impl Sized + 'a; diff --git a/tests/ui/type-alias-impl-trait/hkl_forbidden.stderr b/tests/ui/type-alias-impl-trait/hkl_forbidden.stderr index d404d60f31e..315bdfb2272 100644 --- a/tests/ui/type-alias-impl-trait/hkl_forbidden.stderr +++ b/tests/ui/type-alias-impl-trait/hkl_forbidden.stderr @@ -7,8 +7,28 @@ LL | type Opaque<'a> = impl Sized + 'a; LL | (id, id) | ^^^^^^^^ +error[E0792]: expected generic lifetime parameter, found `'_` + --> $DIR/hkl_forbidden.rs:11:5 + | +LL | type Opaque<'a> = impl Sized + 'a; + | -- this generic parameter must be used with a generic lifetime parameter +... +LL | (id, id) + | ^^^^^^^^ + | + = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` + error[E0792]: expected generic lifetime parameter, found `'a` - --> $DIR/hkl_forbidden.rs:22:5 + --> $DIR/hkl_forbidden.rs:24:5 + | +LL | type Opaque2<'a> = impl Sized + 'a; + | -- this generic parameter must be used with a generic lifetime parameter +... +LL | id2 + | ^^^ + +error[E0792]: expected generic lifetime parameter, found `'b` + --> $DIR/hkl_forbidden.rs:24:5 | LL | type Opaque2<'a> = impl Sized + 'a; | -- this generic parameter must be used with a generic lifetime parameter @@ -17,7 +37,7 @@ LL | id2 | ^^^ error[E0792]: expected generic lifetime parameter, found `'_` - --> $DIR/hkl_forbidden.rs:29:5 + --> $DIR/hkl_forbidden.rs:33:5 | LL | type Opaque3<'a> = impl Sized + 'a; | -- this generic parameter must be used with a generic lifetime parameter @@ -26,7 +46,7 @@ LL | (id, s) | ^^^^^^^ error[E0792]: expected generic lifetime parameter, found `'_` - --> $DIR/hkl_forbidden.rs:35:5 + --> $DIR/hkl_forbidden.rs:39:5 | LL | type Opaque4<'a> = impl Sized + 'a; | -- this generic parameter must be used with a generic lifetime parameter @@ -35,7 +55,7 @@ LL | (s, id) | ^^^^^^^ error[E0792]: expected generic lifetime parameter, found `'a` - --> $DIR/hkl_forbidden.rs:41:5 + --> $DIR/hkl_forbidden.rs:45:5 | LL | type Inner<'a> = impl Sized; | -- this generic parameter must be used with a generic lifetime parameter @@ -43,6 +63,6 @@ LL | type Inner<'a> = impl Sized; LL | |x| x | ^^^^^ -error: aborting due to 5 previous errors +error: aborting due to 7 previous errors For more information about this error, try `rustc --explain E0792`. diff --git a/tests/ui/type-alias-impl-trait/param_mismatch2.rs b/tests/ui/type-alias-impl-trait/param_mismatch2.rs index f6a99711411..94c495cb330 100644 --- a/tests/ui/type-alias-impl-trait/param_mismatch2.rs +++ b/tests/ui/type-alias-impl-trait/param_mismatch2.rs @@ -11,7 +11,9 @@ type Opaque<'a> = impl Sized + 'a; #[define_opaque(Opaque)] fn test(s: &str) -> (impl Fn(&str) -> Opaque<'_>, impl Fn(&str) -> Opaque<'_>) { - (id, id) //~ ERROR: expected generic lifetime parameter, found `'_` + (id, id) + //~^ ERROR: expected generic lifetime parameter, found `'_` + //~| ERROR: expected generic lifetime parameter, found `'_` } fn main() {} diff --git a/tests/ui/type-alias-impl-trait/param_mismatch2.stderr b/tests/ui/type-alias-impl-trait/param_mismatch2.stderr index f5ecade2f02..5c8a8af6501 100644 --- a/tests/ui/type-alias-impl-trait/param_mismatch2.stderr +++ b/tests/ui/type-alias-impl-trait/param_mismatch2.stderr @@ -7,6 +7,17 @@ LL | type Opaque<'a> = impl Sized + 'a; LL | (id, id) | ^^^^^^^^ -error: aborting due to 1 previous error +error[E0792]: expected generic lifetime parameter, found `'_` + --> $DIR/param_mismatch2.rs:14:5 + | +LL | type Opaque<'a> = impl Sized + 'a; + | -- this generic parameter must be used with a generic lifetime parameter +... +LL | (id, id) + | ^^^^^^^^ + | + = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no` + +error: aborting due to 2 previous errors For more information about this error, try `rustc --explain E0792`. diff --git a/tests/ui/type-alias-impl-trait/param_mismatch3.rs b/tests/ui/type-alias-impl-trait/param_mismatch3.rs index 17b6f8bce2a..1514dd66db9 100644 --- a/tests/ui/type-alias-impl-trait/param_mismatch3.rs +++ b/tests/ui/type-alias-impl-trait/param_mismatch3.rs @@ -11,7 +11,9 @@ type Opaque<'a> = impl Sized + 'a; #[define_opaque(Opaque)] fn test() -> impl for<'a, 'b> Fn((&'a str, &'b str)) -> (Opaque<'a>, Opaque<'b>) { - id2 //~ ERROR expected generic lifetime parameter, found `'a` + id2 + //~^ ERROR expected generic lifetime parameter, found `'a` + //~| ERROR expected generic lifetime parameter, found `'b` } fn id(s: &str) -> &str { diff --git a/tests/ui/type-alias-impl-trait/param_mismatch3.stderr b/tests/ui/type-alias-impl-trait/param_mismatch3.stderr index 7565bbfc6ff..76be07ce38f 100644 --- a/tests/ui/type-alias-impl-trait/param_mismatch3.stderr +++ b/tests/ui/type-alias-impl-trait/param_mismatch3.stderr @@ -7,8 +7,17 @@ LL | type Opaque<'a> = impl Sized + 'a; LL | id2 | ^^^ +error[E0792]: expected generic lifetime parameter, found `'b` + --> $DIR/param_mismatch3.rs:14:5 + | +LL | type Opaque<'a> = impl Sized + 'a; + | -- this generic parameter must be used with a generic lifetime parameter +... +LL | id2 + | ^^^ + error[E0792]: expected generic lifetime parameter, found `'_` - --> $DIR/param_mismatch3.rs:25:5 + --> $DIR/param_mismatch3.rs:27:5 | LL | type Opaque2<'a> = impl Sized + 'a; | -- this generic parameter must be used with a generic lifetime parameter @@ -16,6 +25,6 @@ LL | type Opaque2<'a> = impl Sized + 'a; LL | (id, s) | ^^^^^^^ -error: aborting due to 2 previous errors +error: aborting due to 3 previous errors For more information about this error, try `rustc --explain E0792`. |