diff options
4 files changed, 102 insertions, 3 deletions
diff --git a/compiler/rustc_infer/src/traits/error_reporting/mod.rs b/compiler/rustc_infer/src/traits/error_reporting/mod.rs index b5a7d0326a8..9f440f39849 100644 --- a/compiler/rustc_infer/src/traits/error_reporting/mod.rs +++ b/compiler/rustc_infer/src/traits/error_reporting/mod.rs @@ -25,9 +25,11 @@ impl<'tcx> InferCtxt<'tcx> { "impl has stricter requirements than trait" ); - if let Some(span) = self.tcx.hir().span_if_local(trait_item_def_id) { - let item_name = self.tcx.item_name(impl_item_def_id.to_def_id()); - err.span_label(span, format!("definition of `{}` from trait", item_name)); + if !self.tcx.is_impl_trait_in_trait(trait_item_def_id) { + if let Some(span) = self.tcx.hir().span_if_local(trait_item_def_id) { + let item_name = self.tcx.item_name(impl_item_def_id.to_def_id()); + err.span_label(span, format!("definition of `{}` from trait", item_name)); + } } err.span_label(error_span, format!("impl has extra requirement {}", requirement)); diff --git a/tests/ui/async-await/in-trait/return-not-existing-pair.current.stderr b/tests/ui/async-await/in-trait/return-not-existing-pair.current.stderr new file mode 100644 index 00000000000..56973a1d11a --- /dev/null +++ b/tests/ui/async-await/in-trait/return-not-existing-pair.current.stderr @@ -0,0 +1,39 @@ +error[E0726]: implicit elided lifetime not allowed here + --> $DIR/return-not-existing-pair.rs:12:20 + | +LL | impl<'a, 'b, T, U> MyTrait<T> for U { + | ^^^^^^^^^^ expected lifetime parameters + | +help: indicate the anonymous lifetimes + | +LL | impl<'a, 'b, T, U> MyTrait<'_, '_, T> for U { + | +++++++ + +error[E0412]: cannot find type `ConnImpl` in this scope + --> $DIR/return-not-existing-pair.rs:8:48 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a ConnImpl, &'b T); + | ^^^^^^^^ not found in this scope + +error[E0186]: method `foo` has a `&self` declaration in the trait, but not in the impl + --> $DIR/return-not-existing-pair.rs:14:5 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a ConnImpl, &'b T); + | ------------------------------------------------------------ `&self` used in trait +... +LL | async fn foo(_: T) -> (&'a U, &'b T) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&self` in impl + +error[E0308]: mismatched types + --> $DIR/return-not-existing-pair.rs:14:42 + | +LL | async fn foo(_: T) -> (&'a U, &'b T) {} + | ^^ expected `(&U, &T)`, found `()` + | + = note: expected tuple `(&'a U, &'b T)` + found unit type `()` + +error: aborting due to 4 previous errors + +Some errors have detailed explanations: E0186, E0308, E0412, E0726. +For more information about an error, try `rustc --explain E0186`. diff --git a/tests/ui/async-await/in-trait/return-not-existing-pair.next.stderr b/tests/ui/async-await/in-trait/return-not-existing-pair.next.stderr new file mode 100644 index 00000000000..56973a1d11a --- /dev/null +++ b/tests/ui/async-await/in-trait/return-not-existing-pair.next.stderr @@ -0,0 +1,39 @@ +error[E0726]: implicit elided lifetime not allowed here + --> $DIR/return-not-existing-pair.rs:12:20 + | +LL | impl<'a, 'b, T, U> MyTrait<T> for U { + | ^^^^^^^^^^ expected lifetime parameters + | +help: indicate the anonymous lifetimes + | +LL | impl<'a, 'b, T, U> MyTrait<'_, '_, T> for U { + | +++++++ + +error[E0412]: cannot find type `ConnImpl` in this scope + --> $DIR/return-not-existing-pair.rs:8:48 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a ConnImpl, &'b T); + | ^^^^^^^^ not found in this scope + +error[E0186]: method `foo` has a `&self` declaration in the trait, but not in the impl + --> $DIR/return-not-existing-pair.rs:14:5 + | +LL | async fn foo(&'a self, key: &'b T) -> (&'a ConnImpl, &'b T); + | ------------------------------------------------------------ `&self` used in trait +... +LL | async fn foo(_: T) -> (&'a U, &'b T) {} + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `&self` in impl + +error[E0308]: mismatched types + --> $DIR/return-not-existing-pair.rs:14:42 + | +LL | async fn foo(_: T) -> (&'a U, &'b T) {} + | ^^ expected `(&U, &T)`, found `()` + | + = note: expected tuple `(&'a U, &'b T)` + found unit type `()` + +error: aborting due to 4 previous errors + +Some errors have detailed explanations: E0186, E0308, E0412, E0726. +For more information about an error, try `rustc --explain E0186`. diff --git a/tests/ui/async-await/in-trait/return-not-existing-pair.rs b/tests/ui/async-await/in-trait/return-not-existing-pair.rs new file mode 100644 index 00000000000..d1b3832d12b --- /dev/null +++ b/tests/ui/async-await/in-trait/return-not-existing-pair.rs @@ -0,0 +1,19 @@ +// edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + +#![feature(async_fn_in_trait)] + +trait MyTrait<'a, 'b, T> { + async fn foo(&'a self, key: &'b T) -> (&'a ConnImpl, &'b T); + //~^ ERROR: cannot find type `ConnImpl` in this scope [E0412] +} + +impl<'a, 'b, T, U> MyTrait<T> for U { + //~^ ERROR: implicit elided lifetime not allowed here [E0726] + async fn foo(_: T) -> (&'a U, &'b T) {} + //~^ ERROR: method `foo` has a `&self` declaration in the trait, but not in the impl [E0186] + //~| ERROR: mismatched types [E0308] +} + +fn main() {} |