diff options
Diffstat (limited to 'tests/ui/impl-trait')
39 files changed, 34 insertions, 803 deletions
diff --git a/tests/ui/impl-trait/auto-trait-leak2.rs b/tests/ui/impl-trait/auto-trait-leak2.rs index 09450089ada..bbad0df1f66 100644 --- a/tests/ui/impl-trait/auto-trait-leak2.rs +++ b/tests/ui/impl-trait/auto-trait-leak2.rs @@ -21,11 +21,13 @@ fn main() { //~^ ERROR `Rc<Cell<i32>>` cannot be sent between threads safely //~| NOTE `Rc<Cell<i32>>` cannot be sent between threads safely //~| NOTE required by a bound + //~| NOTE use `std::sync::Arc` instead send(after()); //~^ ERROR `Rc<Cell<i32>>` cannot be sent between threads safely //~| NOTE `Rc<Cell<i32>>` cannot be sent between threads safely //~| NOTE required by a bound + //~| NOTE use `std::sync::Arc` instead } // Deferred path, main has to wait until typeck finishes, diff --git a/tests/ui/impl-trait/auto-trait-leak2.stderr b/tests/ui/impl-trait/auto-trait-leak2.stderr index 52fa28145d6..f2f88215a39 100644 --- a/tests/ui/impl-trait/auto-trait-leak2.stderr +++ b/tests/ui/impl-trait/auto-trait-leak2.stderr @@ -10,6 +10,7 @@ LL | send(before()); | required by a bound introduced by this call | = help: within `impl Fn(i32)`, the trait `Send` is not implemented for `Rc<Cell<i32>>` + = note: use `std::sync::Arc` instead of `std::rc::Rc` note: required because it's used within this closure --> $DIR/auto-trait-leak2.rs:10:5 | @@ -27,7 +28,7 @@ LL | fn send<T: Send>(_: T) {} | ^^^^ required by this bound in `send` error[E0277]: `Rc<Cell<i32>>` cannot be sent between threads safely - --> $DIR/auto-trait-leak2.rs:25:10 + --> $DIR/auto-trait-leak2.rs:26:10 | LL | send(after()); | ---- ^^^^^^^ `Rc<Cell<i32>>` cannot be sent between threads safely @@ -38,13 +39,14 @@ LL | fn after() -> impl Fn(i32) { | ------------ within this `impl Fn(i32)` | = help: within `impl Fn(i32)`, the trait `Send` is not implemented for `Rc<Cell<i32>>` + = note: use `std::sync::Arc` instead of `std::rc::Rc` note: required because it's used within this closure - --> $DIR/auto-trait-leak2.rs:38:5 + --> $DIR/auto-trait-leak2.rs:40:5 | LL | move |x| p.set(x) | ^^^^^^^^ note: required because it appears within the type `impl Fn(i32)` - --> $DIR/auto-trait-leak2.rs:33:15 + --> $DIR/auto-trait-leak2.rs:35:15 | LL | fn after() -> impl Fn(i32) { | ^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/check-wf-on-non-defaulted-rpitit.stderr b/tests/ui/impl-trait/in-trait/check-wf-on-non-defaulted-rpitit.stderr index dee87d08238..687c811a5d5 100644 --- a/tests/ui/impl-trait/in-trait/check-wf-on-non-defaulted-rpitit.stderr +++ b/tests/ui/impl-trait/in-trait/check-wf-on-non-defaulted-rpitit.stderr @@ -5,6 +5,7 @@ LL | fn bar() -> Wrapper<impl Sized>; | ^^^^^^^^^^^^^^^^^^^ `impl Sized` cannot be sent between threads safely | = help: the trait `Send` is not implemented for `impl Sized` + = note: consider using `std::sync::Arc<impl Sized>`; for more information visit <https://doc.rust-lang.org/book/ch16-03-shared-state.html> note: required by a bound in `Wrapper` --> $DIR/check-wf-on-non-defaulted-rpitit.rs:3:19 | diff --git a/tests/ui/impl-trait/in-trait/deep-match.current.stderr b/tests/ui/impl-trait/in-trait/deep-match.current.stderr deleted file mode 100644 index 400db20c79c..00000000000 --- a/tests/ui/impl-trait/in-trait/deep-match.current.stderr +++ /dev/null @@ -1,15 +0,0 @@ -error[E0053]: method `bar` has an incompatible return type for trait - --> $DIR/deep-match.rs:14:17 - | -LL | fn bar() -> i32 { - | ^^^ - | | - | expected `Wrapper<_>`, found `i32` - | return type in trait - | - = note: expected struct `Wrapper<_>` - found type `i32` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/impl-trait/in-trait/deep-match.next.stderr b/tests/ui/impl-trait/in-trait/deep-match.next.stderr deleted file mode 100644 index 400db20c79c..00000000000 --- a/tests/ui/impl-trait/in-trait/deep-match.next.stderr +++ /dev/null @@ -1,15 +0,0 @@ -error[E0053]: method `bar` has an incompatible return type for trait - --> $DIR/deep-match.rs:14:17 - | -LL | fn bar() -> i32 { - | ^^^ - | | - | expected `Wrapper<_>`, found `i32` - | return type in trait - | - = note: expected struct `Wrapper<_>` - found type `i32` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr deleted file mode 100644 index 85450e3b0a0..00000000000 --- a/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr +++ /dev/null @@ -1,11 +0,0 @@ -error[E0308]: mismatched types - --> $DIR/default-body-type-err-2.rs:10:9 - | -LL | 42 - | ^^- help: try using a conversion method: `.to_string()` - | | - | expected `String`, found integer - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr deleted file mode 100644 index 85450e3b0a0..00000000000 --- a/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr +++ /dev/null @@ -1,11 +0,0 @@ -error[E0308]: mismatched types - --> $DIR/default-body-type-err-2.rs:10:9 - | -LL | 42 - | ^^- help: try using a conversion method: `.to_string()` - | | - | expected `String`, found integer - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr deleted file mode 100644 index c949168a377..00000000000 --- a/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0271]: type mismatch resolving `<&i32 as Deref>::Target == String` - --> $DIR/default-body-type-err.rs:10:22 - | -LL | fn lol(&self) -> impl Deref<Target = String> { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `String` -LL | -LL | &1i32 - | ----- return type was inferred to be `&i32` here - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0271`. diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr deleted file mode 100644 index c949168a377..00000000000 --- a/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0271]: type mismatch resolving `<&i32 as Deref>::Target == String` - --> $DIR/default-body-type-err.rs:10:22 - | -LL | fn lol(&self) -> impl Deref<Target = String> { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `String` -LL | -LL | &1i32 - | ----- return type was inferred to be `&i32` here - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0271`. diff --git a/tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr b/tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr deleted file mode 100644 index 3c24eff9ae3..00000000000 --- a/tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr +++ /dev/null @@ -1,24 +0,0 @@ -error: concrete type differs from previous defining opaque type use - --> $DIR/default-body-with-rpit.rs:13:9 - | -LL | "" - | ^^ expected `impl Debug`, got `&'static str` - | -note: previous use here - --> $DIR/default-body-with-rpit.rs:12:39 - | -LL | async fn baz(&self) -> impl Debug { - | _______________________________________^ -LL | | "" -LL | | } - | |_____^ - -error[E0720]: cannot resolve opaque type - --> $DIR/default-body-with-rpit.rs:12:28 - | -LL | async fn baz(&self) -> impl Debug { - | ^^^^^^^^^^ cannot resolve opaque type - -error: aborting due to 2 previous errors - -For more information about this error, try `rustc --explain E0720`. diff --git a/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr b/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr deleted file mode 100644 index 3c24eff9ae3..00000000000 --- a/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr +++ /dev/null @@ -1,24 +0,0 @@ -error: concrete type differs from previous defining opaque type use - --> $DIR/default-body-with-rpit.rs:13:9 - | -LL | "" - | ^^ expected `impl Debug`, got `&'static str` - | -note: previous use here - --> $DIR/default-body-with-rpit.rs:12:39 - | -LL | async fn baz(&self) -> impl Debug { - | _______________________________________^ -LL | | "" -LL | | } - | |_____^ - -error[E0720]: cannot resolve opaque type - --> $DIR/default-body-with-rpit.rs:12:28 - | -LL | async fn baz(&self) -> impl Debug { - | ^^^^^^^^^^ cannot resolve opaque type - -error: aborting due to 2 previous errors - -For more information about this error, try `rustc --explain E0720`. diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr b/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr deleted file mode 100644 index 653016cf009..00000000000 --- a/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error[E0277]: `()` doesn't implement `std::fmt::Display` - --> $DIR/doesnt-satisfy.rs:12:17 - | -LL | fn bar() -> () {} - | ^^ `()` cannot be formatted with the default formatter - | - = help: the trait `std::fmt::Display` is not implemented for `()` - = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead -note: required by a bound in `Foo::bar::{opaque#0}` - --> $DIR/doesnt-satisfy.rs:8:22 - | -LL | fn bar() -> impl std::fmt::Display; - | ^^^^^^^^^^^^^^^^^ required by this bound in `Foo::bar::{opaque#0}` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr b/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr deleted file mode 100644 index f0cd43bcf92..00000000000 --- a/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error[E0277]: `()` doesn't implement `std::fmt::Display` - --> $DIR/doesnt-satisfy.rs:12:17 - | -LL | fn bar() -> () {} - | ^^ `()` cannot be formatted with the default formatter - | - = help: the trait `std::fmt::Display` is not implemented for `()` - = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead -note: required by a bound in `Foo::{opaque#0}` - --> $DIR/doesnt-satisfy.rs:8:22 - | -LL | fn bar() -> impl std::fmt::Display; - | ^^^^^^^^^^^^^^^^^ required by this bound in `Foo::{opaque#0}` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr deleted file mode 100644 index d4d0124a659..00000000000 --- a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0046]: not all trait items implemented, missing: `foo` - --> $DIR/dont-project-to-rpitit-with-no-value.rs:11:1 - | -LL | fn foo(&self) -> impl Sized; - | ---------------------------- `foo` from trait -... -LL | impl MyTrait for i32 { - | ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0046`. diff --git a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr deleted file mode 100644 index d4d0124a659..00000000000 --- a/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0046]: not all trait items implemented, missing: `foo` - --> $DIR/dont-project-to-rpitit-with-no-value.rs:11:1 - | -LL | fn foo(&self) -> impl Sized; - | ---------------------------- `foo` from trait -... -LL | impl MyTrait for i32 { - | ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0046`. diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr b/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr deleted file mode 100644 index 310edbcb6cd..00000000000 --- a/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0049]: method `bar` has 1 type parameter but its trait declaration has 0 type parameters - --> $DIR/generics-mismatch.rs:14:12 - | -LL | fn bar(&self) -> impl Sized; - | - expected 0 type parameters -... -LL | fn bar<T>(&self) {} - | ^ found 1 type parameter - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0049`. diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr b/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr deleted file mode 100644 index 310edbcb6cd..00000000000 --- a/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0049]: method `bar` has 1 type parameter but its trait declaration has 0 type parameters - --> $DIR/generics-mismatch.rs:14:12 - | -LL | fn bar(&self) -> impl Sized; - | - expected 0 type parameters -... -LL | fn bar<T>(&self) {} - | ^ found 1 type parameter - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0049`. diff --git a/tests/ui/impl-trait/in-trait/issue-102140.current.stderr b/tests/ui/impl-trait/in-trait/issue-102140.current.stderr deleted file mode 100644 index 7aa7880e258..00000000000 --- a/tests/ui/impl-trait/in-trait/issue-102140.current.stderr +++ /dev/null @@ -1,33 +0,0 @@ -error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:26:22 - | -LL | MyTrait::foo(&self) - | ------------ ^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` - | | - | required by a bound introduced by this call - | -help: consider removing the leading `&`-reference - | -LL - MyTrait::foo(&self) -LL + MyTrait::foo(self) - | - -error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:26:9 - | -LL | MyTrait::foo(&self) - | ^^^^^^^^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` - | - = help: the trait `MyTrait` is implemented for `Outer` - -error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:26:9 - | -LL | MyTrait::foo(&self) - | ^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` - | - = help: the trait `MyTrait` is implemented for `Outer` - -error: aborting due to 3 previous errors - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/issue-102140.next.stderr b/tests/ui/impl-trait/in-trait/issue-102140.next.stderr deleted file mode 100644 index 94893c9e7b4..00000000000 --- a/tests/ui/impl-trait/in-trait/issue-102140.next.stderr +++ /dev/null @@ -1,29 +0,0 @@ -error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:26:22 - | -LL | MyTrait::foo(&self) - | ------------ ^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` - | | - | required by a bound introduced by this call - | - = help: the trait `MyTrait` is implemented for `Outer` - -error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:26:9 - | -LL | MyTrait::foo(&self) - | ^^^^^^^^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` - | - = help: the trait `MyTrait` is implemented for `Outer` - -error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:26:9 - | -LL | MyTrait::foo(&self) - | ^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` - | - = help: the trait `MyTrait` is implemented for `Outer` - -error: aborting due to 3 previous errors - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/issue-102571.current.stderr b/tests/ui/impl-trait/in-trait/issue-102571.current.stderr deleted file mode 100644 index cac9a29f644..00000000000 --- a/tests/ui/impl-trait/in-trait/issue-102571.current.stderr +++ /dev/null @@ -1,14 +0,0 @@ -error[E0308]: mismatched types - --> $DIR/issue-102571.rs:23:9 - | -LL | let () = t.bar(); - | ^^ ------- this expression has type `impl Deref<Target = impl std::fmt::Display + ?Sized>` - | | - | expected associated type, found `()` - | - = note: expected associated type `impl Deref<Target = impl std::fmt::Display + ?Sized>` - found unit type `()` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/issue-102571.next.stderr b/tests/ui/impl-trait/in-trait/issue-102571.next.stderr deleted file mode 100644 index cac9a29f644..00000000000 --- a/tests/ui/impl-trait/in-trait/issue-102571.next.stderr +++ /dev/null @@ -1,14 +0,0 @@ -error[E0308]: mismatched types - --> $DIR/issue-102571.rs:23:9 - | -LL | let () = t.bar(); - | ^^ ------- this expression has type `impl Deref<Target = impl std::fmt::Display + ?Sized>` - | | - | expected associated type, found `()` - | - = note: expected associated type `impl Deref<Target = impl std::fmt::Display + ?Sized>` - found unit type `()` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/object-safety.current.stderr b/tests/ui/impl-trait/in-trait/object-safety.current.stderr deleted file mode 100644 index 2c340a02319..00000000000 --- a/tests/ui/impl-trait/in-trait/object-safety.current.stderr +++ /dev/null @@ -1,49 +0,0 @@ -error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:20:33 - | -LL | let i = Box::new(42_u32) as Box<dyn Foo>; - | ^^^^^^^^^^^^ `Foo` cannot be made into an object - | -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 <https://doc.rust-lang.org/reference/items/traits.html#object-safety> - --> $DIR/object-safety.rs:10:22 - | -LL | trait Foo { - | --- this trait cannot be made into an object... -LL | fn baz(&self) -> impl Debug; - | ^^^^^^^^^^ ...because method `baz` references an `impl Trait` type in its return type - = help: consider moving `baz` to another trait - -error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:23:13 - | -LL | let s = i.baz(); - | ^^^^^^^ `Foo` cannot be made into an object - | -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 <https://doc.rust-lang.org/reference/items/traits.html#object-safety> - --> $DIR/object-safety.rs:10:22 - | -LL | trait Foo { - | --- this trait cannot be made into an object... -LL | fn baz(&self) -> impl Debug; - | ^^^^^^^^^^ ...because method `baz` references an `impl Trait` type in its return type - = help: consider moving `baz` to another trait - -error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:20:13 - | -LL | let i = Box::new(42_u32) as Box<dyn Foo>; - | ^^^^^^^^^^^^^^^^ `Foo` cannot be made into an object - | -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 <https://doc.rust-lang.org/reference/items/traits.html#object-safety> - --> $DIR/object-safety.rs:10:22 - | -LL | trait Foo { - | --- this trait cannot be made into an object... -LL | fn baz(&self) -> impl Debug; - | ^^^^^^^^^^ ...because method `baz` references an `impl Trait` type in its return type - = help: consider moving `baz` to another trait - = note: required for the cast from `Box<u32>` to `Box<dyn Foo>` - -error: aborting due to 3 previous errors - -For more information about this error, try `rustc --explain E0038`. diff --git a/tests/ui/impl-trait/in-trait/object-safety.next.stderr b/tests/ui/impl-trait/in-trait/object-safety.next.stderr deleted file mode 100644 index 2c340a02319..00000000000 --- a/tests/ui/impl-trait/in-trait/object-safety.next.stderr +++ /dev/null @@ -1,49 +0,0 @@ -error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:20:33 - | -LL | let i = Box::new(42_u32) as Box<dyn Foo>; - | ^^^^^^^^^^^^ `Foo` cannot be made into an object - | -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 <https://doc.rust-lang.org/reference/items/traits.html#object-safety> - --> $DIR/object-safety.rs:10:22 - | -LL | trait Foo { - | --- this trait cannot be made into an object... -LL | fn baz(&self) -> impl Debug; - | ^^^^^^^^^^ ...because method `baz` references an `impl Trait` type in its return type - = help: consider moving `baz` to another trait - -error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:23:13 - | -LL | let s = i.baz(); - | ^^^^^^^ `Foo` cannot be made into an object - | -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 <https://doc.rust-lang.org/reference/items/traits.html#object-safety> - --> $DIR/object-safety.rs:10:22 - | -LL | trait Foo { - | --- this trait cannot be made into an object... -LL | fn baz(&self) -> impl Debug; - | ^^^^^^^^^^ ...because method `baz` references an `impl Trait` type in its return type - = help: consider moving `baz` to another trait - -error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:20:13 - | -LL | let i = Box::new(42_u32) as Box<dyn Foo>; - | ^^^^^^^^^^^^^^^^ `Foo` cannot be made into an object - | -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 <https://doc.rust-lang.org/reference/items/traits.html#object-safety> - --> $DIR/object-safety.rs:10:22 - | -LL | trait Foo { - | --- this trait cannot be made into an object... -LL | fn baz(&self) -> impl Debug; - | ^^^^^^^^^^ ...because method `baz` references an `impl Trait` type in its return type - = help: consider moving `baz` to another trait - = note: required for the cast from `Box<u32>` to `Box<dyn Foo>` - -error: aborting due to 3 previous errors - -For more information about this error, try `rustc --explain E0038`. diff --git a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.current.stderr b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.current.stderr deleted file mode 100644 index a57653b2c9e..00000000000 --- a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.current.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error[E0308]: mismatched types - --> $DIR/opaque-in-impl-is-opaque.rs:20:19 - | -LL | fn bar(&self) -> impl Display { - | ------------ the found opaque type -... -LL | let x: &str = ().bar(); - | ---- ^^^^^^^^ expected `&str`, found opaque type - | | - | expected due to this - | - = note: expected reference `&str` - found opaque type `impl std::fmt::Display` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.next.stderr b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.next.stderr deleted file mode 100644 index a57653b2c9e..00000000000 --- a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.next.stderr +++ /dev/null @@ -1,17 +0,0 @@ -error[E0308]: mismatched types - --> $DIR/opaque-in-impl-is-opaque.rs:20:19 - | -LL | fn bar(&self) -> impl Display { - | ------------ the found opaque type -... -LL | let x: &str = ().bar(); - | ---- ^^^^^^^^ expected `&str`, found opaque type - | | - | expected due to this - | - = note: expected reference `&str` - found opaque type `impl std::fmt::Display` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0308`. diff --git a/tests/ui/impl-trait/in-trait/outlives-in-nested-rpit.rs b/tests/ui/impl-trait/in-trait/outlives-in-nested-rpit.rs new file mode 100644 index 00000000000..6330242ceeb --- /dev/null +++ b/tests/ui/impl-trait/in-trait/outlives-in-nested-rpit.rs @@ -0,0 +1,11 @@ +// check-pass + +#![feature(return_position_impl_trait_in_trait)] + +trait Foo { + fn early<'a, T: 'a>(x: &'a T) -> impl Iterator<Item = impl Into<&'a T>>; + + fn late<'a, T>(x: &'a T) -> impl Iterator<Item = impl Into<&'a T>>; +} + +fn main() {} diff --git a/tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.current.stderr b/tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.current.stderr deleted file mode 100644 index ff30103b771..00000000000 --- a/tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.current.stderr +++ /dev/null @@ -1,16 +0,0 @@ -error[E0277]: the trait bound `impl Foo<u8>: Foo<char>` is not satisfied - --> $DIR/return-dont-satisfy-bounds.rs:13:34 - | -LL | fn foo<F2: Foo<u8>>(self) -> impl Foo<u8> { - | ^^^^^^^^^^^^ the trait `Foo<char>` is not implemented for `impl Foo<u8>` - | - = help: the trait `Foo<char>` is implemented for `Bar` -note: required by a bound in `Foo::foo::{opaque#0}` - --> $DIR/return-dont-satisfy-bounds.rs:7:30 - | -LL | fn foo<F2>(self) -> impl Foo<T>; - | ^^^^^^ required by this bound in `Foo::foo::{opaque#0}` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.next.stderr b/tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.next.stderr deleted file mode 100644 index 7c7f7feaa55..00000000000 --- a/tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.next.stderr +++ /dev/null @@ -1,16 +0,0 @@ -error[E0277]: the trait bound `impl Foo<u8>: Foo<char>` is not satisfied - --> $DIR/return-dont-satisfy-bounds.rs:13:34 - | -LL | fn foo<F2: Foo<u8>>(self) -> impl Foo<u8> { - | ^^^^^^^^^^^^ the trait `Foo<char>` is not implemented for `impl Foo<u8>` - | - = help: the trait `Foo<char>` is implemented for `Bar` -note: required by a bound in `Foo::{opaque#0}` - --> $DIR/return-dont-satisfy-bounds.rs:7:30 - | -LL | fn foo<F2>(self) -> impl Foo<T>; - | ^^^^^^ required by this bound in `Foo::{opaque#0}` - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.current.stderr b/tests/ui/impl-trait/in-trait/signature-mismatch.current.stderr deleted file mode 100644 index 8c9dd403174..00000000000 --- a/tests/ui/impl-trait/in-trait/signature-mismatch.current.stderr +++ /dev/null @@ -1,61 +0,0 @@ -error: return type captures more lifetimes than trait definition - --> $DIR/signature-mismatch.rs:36:47 - | -LL | fn async_fn<'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a { - | -- this lifetime was captured ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -note: hidden type must only reference lifetimes captured by this impl trait - --> $DIR/signature-mismatch.rs:17:40 - | -LL | fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = note: hidden type inferred to be `impl Future<Output = Vec<u8>> + 'a` - -error: return type captures more lifetimes than trait definition - --> $DIR/signature-mismatch.rs:41:57 - | -LL | fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a { - | -- this lifetime was captured ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -note: hidden type must only reference lifetimes captured by this impl trait - --> $DIR/signature-mismatch.rs:18:57 - | -LL | fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = note: hidden type inferred to be `impl Future<Output = Vec<u8>> + 'a` - -error: return type captures more lifetimes than trait definition - --> $DIR/signature-mismatch.rs:49:10 - | -LL | fn async_fn_multiple<'a, 'b>( - | -- this lifetime was captured -... -LL | ) -> impl Future<Output = Vec<u8>> + Captures2<'a, 'b> { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -note: hidden type must only reference lifetimes captured by this impl trait - --> $DIR/signature-mismatch.rs:20:12 - | -LL | -> impl Future<Output = Vec<u8>> + Captures<'a>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = note: hidden type inferred to be `impl Future<Output = Vec<u8>> + Captures2<'a, 'b>` - -error[E0309]: the parameter type `T` may not live long enough - --> $DIR/signature-mismatch.rs:58:10 - | -LL | ) -> impl Future<Output = Vec<u8>> { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...so that the type `impl Future<Output = Vec<u8>>` will meet its required lifetime bounds... - | -note: ...that is required by this bound - --> $DIR/signature-mismatch.rs:25:42 - | -LL | ) -> impl Future<Output = Vec<u8>> + 'a; - | ^^ -help: consider adding an explicit lifetime bound... - | -LL | fn async_fn_reduce_outlive<'a, 'b, T: 'a>( - | ++++ - -error: aborting due to 4 previous errors - -For more information about this error, try `rustc --explain E0309`. diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.next.stderr b/tests/ui/impl-trait/in-trait/signature-mismatch.next.stderr deleted file mode 100644 index 8c9dd403174..00000000000 --- a/tests/ui/impl-trait/in-trait/signature-mismatch.next.stderr +++ /dev/null @@ -1,61 +0,0 @@ -error: return type captures more lifetimes than trait definition - --> $DIR/signature-mismatch.rs:36:47 - | -LL | fn async_fn<'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a { - | -- this lifetime was captured ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -note: hidden type must only reference lifetimes captured by this impl trait - --> $DIR/signature-mismatch.rs:17:40 - | -LL | fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = note: hidden type inferred to be `impl Future<Output = Vec<u8>> + 'a` - -error: return type captures more lifetimes than trait definition - --> $DIR/signature-mismatch.rs:41:57 - | -LL | fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a { - | -- this lifetime was captured ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -note: hidden type must only reference lifetimes captured by this impl trait - --> $DIR/signature-mismatch.rs:18:57 - | -LL | fn async_fn_early<'a: 'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = note: hidden type inferred to be `impl Future<Output = Vec<u8>> + 'a` - -error: return type captures more lifetimes than trait definition - --> $DIR/signature-mismatch.rs:49:10 - | -LL | fn async_fn_multiple<'a, 'b>( - | -- this lifetime was captured -... -LL | ) -> impl Future<Output = Vec<u8>> + Captures2<'a, 'b> { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - | -note: hidden type must only reference lifetimes captured by this impl trait - --> $DIR/signature-mismatch.rs:20:12 - | -LL | -> impl Future<Output = Vec<u8>> + Captures<'a>; - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - = note: hidden type inferred to be `impl Future<Output = Vec<u8>> + Captures2<'a, 'b>` - -error[E0309]: the parameter type `T` may not live long enough - --> $DIR/signature-mismatch.rs:58:10 - | -LL | ) -> impl Future<Output = Vec<u8>> { - | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ ...so that the type `impl Future<Output = Vec<u8>>` will meet its required lifetime bounds... - | -note: ...that is required by this bound - --> $DIR/signature-mismatch.rs:25:42 - | -LL | ) -> impl Future<Output = Vec<u8>> + 'a; - | ^^ -help: consider adding an explicit lifetime bound... - | -LL | fn async_fn_reduce_outlive<'a, 'b, T: 'a>( - | ++++ - -error: aborting due to 4 previous errors - -For more information about this error, try `rustc --explain E0309`. diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr b/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr deleted file mode 100644 index f48e7a1ed14..00000000000 --- a/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr +++ /dev/null @@ -1,31 +0,0 @@ -error[E0053]: method `bar` has an incompatible type for trait - --> $DIR/specialization-broken.rs:19:22 - | -LL | default impl<U> Foo for U - | - this type parameter -... -LL | fn bar(&self) -> U { - | ^ - | | - | expected associated type, found type parameter `U` - | help: change the output type to match the trait: `impl Sized` - | -note: type in trait - --> $DIR/specialization-broken.rs:12:22 - | -LL | fn bar(&self) -> impl Sized; - | ^^^^^^^^^^ - = note: expected signature `fn(&U) -> impl Sized` - found signature `fn(&U) -> U` - -error: method with return-position `impl Trait` in trait cannot be specialized - --> $DIR/specialization-broken.rs:19:5 - | -LL | fn bar(&self) -> U { - | ^^^^^^^^^^^^^^^^^^ - | - = note: specialization behaves in inconsistent and surprising ways with `#![feature(return_position_impl_trait_in_trait)]`, and for now is disallowed - -error: aborting due to 2 previous errors - -For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr b/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr deleted file mode 100644 index f48e7a1ed14..00000000000 --- a/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr +++ /dev/null @@ -1,31 +0,0 @@ -error[E0053]: method `bar` has an incompatible type for trait - --> $DIR/specialization-broken.rs:19:22 - | -LL | default impl<U> Foo for U - | - this type parameter -... -LL | fn bar(&self) -> U { - | ^ - | | - | expected associated type, found type parameter `U` - | help: change the output type to match the trait: `impl Sized` - | -note: type in trait - --> $DIR/specialization-broken.rs:12:22 - | -LL | fn bar(&self) -> impl Sized; - | ^^^^^^^^^^ - = note: expected signature `fn(&U) -> impl Sized` - found signature `fn(&U) -> U` - -error: method with return-position `impl Trait` in trait cannot be specialized - --> $DIR/specialization-broken.rs:19:5 - | -LL | fn bar(&self) -> U { - | ^^^^^^^^^^^^^^^^^^ - | - = note: specialization behaves in inconsistent and surprising ways with `#![feature(return_position_impl_trait_in_trait)]`, and for now is disallowed - -error: aborting due to 2 previous errors - -For more information about this error, try `rustc --explain E0053`. diff --git a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.current.stderr b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.current.stderr deleted file mode 100644 index 64c942705cf..00000000000 --- a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.current.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0049]: method `bar` has 0 type parameters but its trait declaration has 1 type parameter - --> $DIR/trait-more-generics-than-impl.rs:14:11 - | -LL | fn bar<T>() -> impl Sized; - | - expected 1 type parameter -... -LL | fn bar() -> impl Sized {} - | ^ found 0 type parameters - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0049`. diff --git a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.next.stderr b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.next.stderr deleted file mode 100644 index 64c942705cf..00000000000 --- a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.next.stderr +++ /dev/null @@ -1,12 +0,0 @@ -error[E0049]: method `bar` has 0 type parameters but its trait declaration has 1 type parameter - --> $DIR/trait-more-generics-than-impl.rs:14:11 - | -LL | fn bar<T>() -> impl Sized; - | - expected 1 type parameter -... -LL | fn bar() -> impl Sized {} - | ^ found 0 type parameters - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0049`. diff --git a/tests/ui/impl-trait/in-trait/unconstrained-lt.current.stderr b/tests/ui/impl-trait/in-trait/unconstrained-lt.current.stderr deleted file mode 100644 index bf088ae8b25..00000000000 --- a/tests/ui/impl-trait/in-trait/unconstrained-lt.current.stderr +++ /dev/null @@ -1,9 +0,0 @@ -error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates - --> $DIR/unconstrained-lt.rs:10:6 - | -LL | impl<'a, T> Foo for T { - | ^^ unconstrained lifetime parameter - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0207`. diff --git a/tests/ui/impl-trait/in-trait/unconstrained-lt.next.stderr b/tests/ui/impl-trait/in-trait/unconstrained-lt.next.stderr deleted file mode 100644 index bf088ae8b25..00000000000 --- a/tests/ui/impl-trait/in-trait/unconstrained-lt.next.stderr +++ /dev/null @@ -1,9 +0,0 @@ -error[E0207]: the lifetime parameter `'a` is not constrained by the impl trait, self type, or predicates - --> $DIR/unconstrained-lt.rs:10:6 - | -LL | impl<'a, T> Foo for T { - | ^^ unconstrained lifetime parameter - -error: aborting due to previous error - -For more information about this error, try `rustc --explain E0207`. diff --git a/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr b/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr deleted file mode 100644 index 74c84c012b1..00000000000 --- a/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr +++ /dev/null @@ -1,57 +0,0 @@ -error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:17:22 - | -LL | fn nya() -> impl Wf<Vec<[u8]>>; - | ^^^^^^^^^^^^^ doesn't have a size known at compile-time - | - = help: the trait `Sized` is not implemented for `[u8]` -note: required by a bound in `Vec` - --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL - -error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:20:23 - | -LL | fn nya2() -> impl Wf<[u8]>; - | ^^^^^^^^ doesn't have a size known at compile-time - | - = help: the trait `Sized` is not implemented for `[u8]` -note: required by a bound in `Wf` - --> $DIR/wf-bounds.rs:10:10 - | -LL | trait Wf<T> { - | ^ required by this bound in `Wf` -help: consider relaxing the implicit `Sized` restriction - | -LL | trait Wf<T: ?Sized> { - | ++++++++ - -error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:23:44 - | -LL | fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>; - | ^^^^^^^^^^^^^ doesn't have a size known at compile-time - | - = help: the trait `Sized` is not implemented for `[u8]` -note: required by a bound in `Vec` - --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL - -error[E0277]: `T` doesn't implement `std::fmt::Display` - --> $DIR/wf-bounds.rs:26:26 - | -LL | fn nya4<T>() -> impl Wf<NeedsDisplay<T>>; - | ^^^^^^^^^^^^^^^^^^^ `T` cannot be formatted with the default formatter - | - = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead -note: required by a bound in `NeedsDisplay` - --> $DIR/wf-bounds.rs:14:24 - | -LL | struct NeedsDisplay<T: Display>(T); - | ^^^^^^^ required by this bound in `NeedsDisplay` -help: consider restricting type parameter `T` - | -LL | fn nya4<T: std::fmt::Display>() -> impl Wf<NeedsDisplay<T>>; - | +++++++++++++++++++ - -error: aborting due to 4 previous errors - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr b/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr deleted file mode 100644 index 74c84c012b1..00000000000 --- a/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr +++ /dev/null @@ -1,57 +0,0 @@ -error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:17:22 - | -LL | fn nya() -> impl Wf<Vec<[u8]>>; - | ^^^^^^^^^^^^^ doesn't have a size known at compile-time - | - = help: the trait `Sized` is not implemented for `[u8]` -note: required by a bound in `Vec` - --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL - -error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:20:23 - | -LL | fn nya2() -> impl Wf<[u8]>; - | ^^^^^^^^ doesn't have a size known at compile-time - | - = help: the trait `Sized` is not implemented for `[u8]` -note: required by a bound in `Wf` - --> $DIR/wf-bounds.rs:10:10 - | -LL | trait Wf<T> { - | ^ required by this bound in `Wf` -help: consider relaxing the implicit `Sized` restriction - | -LL | trait Wf<T: ?Sized> { - | ++++++++ - -error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:23:44 - | -LL | fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>; - | ^^^^^^^^^^^^^ doesn't have a size known at compile-time - | - = help: the trait `Sized` is not implemented for `[u8]` -note: required by a bound in `Vec` - --> $SRC_DIR/alloc/src/vec/mod.rs:LL:COL - -error[E0277]: `T` doesn't implement `std::fmt::Display` - --> $DIR/wf-bounds.rs:26:26 - | -LL | fn nya4<T>() -> impl Wf<NeedsDisplay<T>>; - | ^^^^^^^^^^^^^^^^^^^ `T` cannot be formatted with the default formatter - | - = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead -note: required by a bound in `NeedsDisplay` - --> $DIR/wf-bounds.rs:14:24 - | -LL | struct NeedsDisplay<T: Display>(T); - | ^^^^^^^ required by this bound in `NeedsDisplay` -help: consider restricting type parameter `T` - | -LL | fn nya4<T: std::fmt::Display>() -> impl Wf<NeedsDisplay<T>>; - | +++++++++++++++++++ - -error: aborting due to 4 previous errors - -For more information about this error, try `rustc --explain E0277`. diff --git a/tests/ui/impl-trait/mapping-duplicated-lifetimes-issue-114597.rs b/tests/ui/impl-trait/mapping-duplicated-lifetimes-issue-114597.rs new file mode 100644 index 00000000000..a2dd0a9308d --- /dev/null +++ b/tests/ui/impl-trait/mapping-duplicated-lifetimes-issue-114597.rs @@ -0,0 +1,15 @@ +// check-pass +// issue: 114597 +// edition: 2021 + +struct A<'a> { + dat: &'a (), +} + +impl<'a> A<'a> { + async fn a(&self) -> impl Iterator<Item = std::iter::Repeat<()>> { + std::iter::repeat(()).map(|()| std::iter::repeat(())) + } +} + +fn main() {} |