diff options
Diffstat (limited to 'tests/ui/impl-trait')
96 files changed, 698 insertions, 193 deletions
diff --git a/tests/ui/impl-trait/associated-impl-trait-type-generic-trait.rs b/tests/ui/impl-trait/associated-impl-trait-type-generic-trait.rs index 6c7c46b0e..0908a0bf3 100644 --- a/tests/ui/impl-trait/associated-impl-trait-type-generic-trait.rs +++ b/tests/ui/impl-trait/associated-impl-trait-type-generic-trait.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] // build-pass (FIXME(62277): could be check-pass?) trait Bar {} diff --git a/tests/ui/impl-trait/associated-impl-trait-type-trivial.rs b/tests/ui/impl-trait/associated-impl-trait-type-trivial.rs index cdda341ca..b5ea90bb0 100644 --- a/tests/ui/impl-trait/associated-impl-trait-type-trivial.rs +++ b/tests/ui/impl-trait/associated-impl-trait-type-trivial.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] // build-pass (FIXME(62277): could be check-pass?) trait Bar {} diff --git a/tests/ui/impl-trait/associated-impl-trait-type.rs b/tests/ui/impl-trait/associated-impl-trait-type.rs index d0661d66f..f5981261c 100644 --- a/tests/ui/impl-trait/associated-impl-trait-type.rs +++ b/tests/ui/impl-trait/associated-impl-trait-type.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] // build-pass (FIXME(62277): could be check-pass?) trait Bar {} diff --git a/tests/ui/impl-trait/auto-trait-leak.stderr b/tests/ui/impl-trait/auto-trait-leak.stderr index fd0358421..e6c750d0e 100644 --- a/tests/ui/impl-trait/auto-trait-leak.stderr +++ b/tests/ui/impl-trait/auto-trait-leak.stderr @@ -29,6 +29,11 @@ note: ...which requires building MIR for `cycle1`... | LL | fn cycle1() -> impl Clone { | ^^^^^^^^^^^^^^^^^^^^^^^^^ +note: ...which requires match-checking `cycle1`... + --> $DIR/auto-trait-leak.rs:12:1 + | +LL | fn cycle1() -> impl Clone { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ note: ...which requires building THIR for `cycle1`... --> $DIR/auto-trait-leak.rs:12:1 | @@ -70,6 +75,11 @@ note: ...which requires building MIR for `cycle2`... | LL | fn cycle2() -> impl Clone { | ^^^^^^^^^^^^^^^^^^^^^^^^^ +note: ...which requires match-checking `cycle2`... + --> $DIR/auto-trait-leak.rs:19:1 + | +LL | fn cycle2() -> impl Clone { + | ^^^^^^^^^^^^^^^^^^^^^^^^^ note: ...which requires building THIR for `cycle2`... --> $DIR/auto-trait-leak.rs:19:1 | diff --git a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.stderr b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.stderr index d56e1273f..835f7f765 100644 --- a/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.stderr +++ b/tests/ui/impl-trait/impl-fn-hrtb-bounds-2.stderr @@ -6,7 +6,7 @@ LL | fn a() -> impl Fn(&u8) -> impl Debug { LL | |x| x | --- ^ | | - | hidden type `&u8` captures the anonymous lifetime #1 defined here + | hidden type `&u8` captures the anonymous lifetime as defined here error: aborting due to previous error diff --git a/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs b/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs index 74df300f8..ffeabe5c2 100644 --- a/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs +++ b/tests/ui/impl-trait/in-trait/auxiliary/rpitit.rs @@ -1,11 +1,14 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty + #![feature(return_position_impl_trait_in_trait)] +use std::ops::Deref; + pub trait Foo { - fn bar() -> impl Sized; + fn bar() -> impl Deref<Target = impl Sized>; } pub struct Foreign; - impl Foo for Foreign { - fn bar() {} + fn bar() -> &'static () { &() } } diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.stderr b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr index d681ecf25..05c025cc1 100644 --- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.stderr +++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.current.stderr @@ -1,5 +1,5 @@ warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/box-coerce-span-in-default.rs:3:12 + --> $DIR/box-coerce-span-in-default.rs:5:12 | LL | #![feature(return_position_impl_trait_in_trait)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr new file mode 100644 index 000000000..05c025cc1 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.next.stderr @@ -0,0 +1,11 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/box-coerce-span-in-default.rs:5:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs index a4d483dee..163bb4fcf 100644 --- a/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs +++ b/tests/ui/impl-trait/in-trait/box-coerce-span-in-default.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] //~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete diff --git a/tests/ui/impl-trait/in-trait/deep-match-works.rs b/tests/ui/impl-trait/in-trait/deep-match-works.rs index 772da845e..5c9d2e356 100644 --- a/tests/ui/impl-trait/in-trait/deep-match-works.rs +++ b/tests/ui/impl-trait/in-trait/deep-match-works.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] @@ -10,7 +12,9 @@ trait Foo { } impl Foo for () { - fn bar() -> Wrapper<i32> { Wrapper(0) } + fn bar() -> Wrapper<i32> { + Wrapper(0) + } } fn main() {} diff --git a/tests/ui/impl-trait/in-trait/deep-match.stderr b/tests/ui/impl-trait/in-trait/deep-match.current.stderr index 3eba419c0..400db20c7 100644 --- a/tests/ui/impl-trait/in-trait/deep-match.stderr +++ b/tests/ui/impl-trait/in-trait/deep-match.current.stderr @@ -1,7 +1,7 @@ error[E0053]: method `bar` has an incompatible return type for trait - --> $DIR/deep-match.rs:11:17 + --> $DIR/deep-match.rs:14:17 | -LL | fn bar() -> i32 { 0 } +LL | fn bar() -> i32 { | ^^^ | | | expected `Wrapper<_>`, found `i32` diff --git a/tests/ui/impl-trait/in-trait/deep-match.next.stderr b/tests/ui/impl-trait/in-trait/deep-match.next.stderr new file mode 100644 index 000000000..400db20c7 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/deep-match.next.stderr @@ -0,0 +1,15 @@ +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.rs b/tests/ui/impl-trait/in-trait/deep-match.rs index a6385147c..413d054e1 100644 --- a/tests/ui/impl-trait/in-trait/deep-match.rs +++ b/tests/ui/impl-trait/in-trait/deep-match.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] @@ -8,8 +11,10 @@ trait Foo { } impl Foo for () { - fn bar() -> i32 { 0 } - //~^ ERROR method `bar` has an incompatible return type for trait + fn bar() -> i32 { + //~^ ERROR method `bar` has an incompatible return type for trait + 0 + } } fn main() {} diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err-2.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr index cc3bdf0e5..85450e3b0 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err-2.stderr +++ b/tests/ui/impl-trait/in-trait/default-body-type-err-2.current.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/default-body-type-err-2.rs:8:9 + --> $DIR/default-body-type-err-2.rs:10:9 | LL | 42 | ^^- help: try using a conversion method: `.to_string()` 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 new file mode 100644 index 000000000..85450e3b0 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-type-err-2.next.stderr @@ -0,0 +1,11 @@ +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.rs b/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs index 45ae2b8ad..623237763 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs +++ b/tests/ui/impl-trait/in-trait/default-body-type-err-2.rs @@ -1,4 +1,6 @@ // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![allow(incomplete_features)] #![feature(async_fn_in_trait)] diff --git a/tests/ui/impl-trait/in-trait/default-body-type-err.stderr b/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr index 4742eb37d..c949168a3 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err.stderr +++ b/tests/ui/impl-trait/in-trait/default-body-type-err.current.stderr @@ -1,5 +1,5 @@ error[E0271]: type mismatch resolving `<&i32 as Deref>::Target == String` - --> $DIR/default-body-type-err.rs:7:22 + --> $DIR/default-body-type-err.rs:10:22 | LL | fn lol(&self) -> impl Deref<Target = String> { | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `String` 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 new file mode 100644 index 000000000..c949168a3 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-type-err.next.stderr @@ -0,0 +1,12 @@ +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.rs b/tests/ui/impl-trait/in-trait/default-body-type-err.rs index ac9baf91c..9bd5b7779 100644 --- a/tests/ui/impl-trait/in-trait/default-body-type-err.rs +++ b/tests/ui/impl-trait/in-trait/default-body-type-err.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![allow(incomplete_features)] #![feature(return_position_impl_trait_in_trait)] 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 new file mode 100644 index 000000000..3c24eff9a --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-with-rpit.current.stderr @@ -0,0 +1,24 @@ +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 new file mode 100644 index 000000000..3c24eff9a --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-body-with-rpit.next.stderr @@ -0,0 +1,24 @@ +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.rs b/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs index ad3cc7c25..6bcc7b9ef 100644 --- a/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs +++ b/tests/ui/impl-trait/in-trait/default-body-with-rpit.rs @@ -1,5 +1,7 @@ -// check-pass // edition:2021 +// known-bug: #108304 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait, return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/default-body.rs b/tests/ui/impl-trait/in-trait/default-body.rs index b0baf5bb1..ab6a51c6b 100644 --- a/tests/ui/impl-trait/in-trait/default-body.rs +++ b/tests/ui/impl-trait/in-trait/default-body.rs @@ -1,5 +1,7 @@ // check-pass // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait, return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.current.stderr b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.current.stderr new file mode 100644 index 000000000..a0c0589b9 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.current.stderr @@ -0,0 +1,11 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/default-method-binder-shifting.rs:5:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.next.stderr b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.next.stderr new file mode 100644 index 000000000..a0c0589b9 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.next.stderr @@ -0,0 +1,11 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/default-method-binder-shifting.rs:5:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs new file mode 100644 index 000000000..de82544f2 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-method-binder-shifting.rs @@ -0,0 +1,22 @@ +// check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + +#![feature(return_position_impl_trait_in_trait)] +//~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete + +trait Trait { + type Type; + + // Check that we're adjusting bound vars correctly when installing the default + // method projection assumptions. + fn method(&self) -> impl Trait<Type = impl Sized + '_>; +} + +trait Trait2 { + type Type; + + fn method(&self) -> impl Trait2<Type = impl Trait2<Type = impl Sized + '_> + '_>; +} + +fn main() {} diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.stderr b/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr index 5e18605aa..7bb79911f 100644 --- a/tests/ui/impl-trait/in-trait/default-method-constraint.stderr +++ b/tests/ui/impl-trait/in-trait/default-method-constraint.current.stderr @@ -1,5 +1,5 @@ warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes - --> $DIR/default-method-constraint.rs:5:12 + --> $DIR/default-method-constraint.rs:7:12 | LL | #![feature(return_position_impl_trait_in_trait)] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr b/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr new file mode 100644 index 000000000..7bb79911f --- /dev/null +++ b/tests/ui/impl-trait/in-trait/default-method-constraint.next.stderr @@ -0,0 +1,11 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/default-method-constraint.rs:7:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +warning: 1 warning emitted + diff --git a/tests/ui/impl-trait/in-trait/default-method-constraint.rs b/tests/ui/impl-trait/in-trait/default-method-constraint.rs index 8c50cc295..e85fe3c86 100644 --- a/tests/ui/impl-trait/in-trait/default-method-constraint.rs +++ b/tests/ui/impl-trait/in-trait/default-method-constraint.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next // This didn't work in the previous default RPITIT method hack attempt diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.stderr b/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr index aa5492d28..653016cf0 100644 --- a/tests/ui/impl-trait/in-trait/doesnt-satisfy.stderr +++ b/tests/ui/impl-trait/in-trait/doesnt-satisfy.current.stderr @@ -1,5 +1,5 @@ error[E0277]: `()` doesn't implement `std::fmt::Display` - --> $DIR/doesnt-satisfy.rs:9:17 + --> $DIR/doesnt-satisfy.rs:12:17 | LL | fn bar() -> () {} | ^^ `()` cannot be formatted with the default formatter @@ -7,7 +7,7 @@ LL | fn bar() -> () {} = 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:5:22 + --> $DIR/doesnt-satisfy.rs:8:22 | LL | fn bar() -> impl std::fmt::Display; | ^^^^^^^^^^^^^^^^^ required by this bound in `Foo::bar::{opaque#0}` diff --git a/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr b/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr new file mode 100644 index 000000000..f0cd43bcf --- /dev/null +++ b/tests/ui/impl-trait/in-trait/doesnt-satisfy.next.stderr @@ -0,0 +1,17 @@ +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/doesnt-satisfy.rs b/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs index bb4e0d44f..fcd0b51ee 100644 --- a/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs +++ b/tests/ui/impl-trait/in-trait/doesnt-satisfy.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] 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 new file mode 100644 index 000000000..b8a793e1a --- /dev/null +++ b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.current.stderr @@ -0,0 +1,21 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/dont-project-to-rpitit-with-no-value.rs:4:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0046]: not all trait items implemented, missing: `foo` + --> $DIR/dont-project-to-rpitit-with-no-value.rs:12:1 + | +LL | fn foo(&self) -> impl Sized; + | ---------------------------- `foo` from trait +... +LL | impl MyTrait for i32 { + | ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation + +error: aborting due to previous error; 1 warning emitted + +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 new file mode 100644 index 000000000..b8a793e1a --- /dev/null +++ b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.next.stderr @@ -0,0 +1,21 @@ +warning: the feature `return_position_impl_trait_in_trait` is incomplete and may not be safe to use and/or cause compiler crashes + --> $DIR/dont-project-to-rpitit-with-no-value.rs:4:12 + | +LL | #![feature(return_position_impl_trait_in_trait)] + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + | + = note: see issue #91611 <https://github.com/rust-lang/rust/issues/91611> for more information + = note: `#[warn(incomplete_features)]` on by default + +error[E0046]: not all trait items implemented, missing: `foo` + --> $DIR/dont-project-to-rpitit-with-no-value.rs:12:1 + | +LL | fn foo(&self) -> impl Sized; + | ---------------------------- `foo` from trait +... +LL | impl MyTrait for i32 { + | ^^^^^^^^^^^^^^^^^^^^ missing `foo` in implementation + +error: aborting due to previous error; 1 warning emitted + +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.rs b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs new file mode 100644 index 000000000..8329ce1f8 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/dont-project-to-rpitit-with-no-value.rs @@ -0,0 +1,19 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + +#![feature(return_position_impl_trait_in_trait)] +//~^ WARN the feature `return_position_impl_trait_in_trait` is incomplete + +trait MyTrait { + fn foo(&self) -> impl Sized; + fn bar(&self) -> impl Sized; +} + +impl MyTrait for i32 { + //~^ ERROR not all trait items implemented, missing: `foo` + fn bar(&self) -> impl Sized { + self.foo() + } +} + +fn main() {} diff --git a/tests/ui/impl-trait/in-trait/early.rs b/tests/ui/impl-trait/in-trait/early.rs index 9c1c2b503..831033a58 100644 --- a/tests/ui/impl-trait/in-trait/early.rs +++ b/tests/ui/impl-trait/in-trait/early.rs @@ -1,5 +1,7 @@ // check-pass // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(async_fn_in_trait, return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/encode.rs b/tests/ui/impl-trait/in-trait/encode.rs index efb9f6498..98aaf4a65 100644 --- a/tests/ui/impl-trait/in-trait/encode.rs +++ b/tests/ui/impl-trait/in-trait/encode.rs @@ -1,5 +1,7 @@ // build-pass // compile-flags: --crate-type=lib +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/foreign.rs b/tests/ui/impl-trait/in-trait/foreign.rs index 6341f5b42..f4972d948 100644 --- a/tests/ui/impl-trait/in-trait/foreign.rs +++ b/tests/ui/impl-trait/in-trait/foreign.rs @@ -1,9 +1,21 @@ // check-pass // aux-build: rpitit.rs +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next extern crate rpitit; +use std::sync::Arc; + +// Implement an RPITIT from another crate. +struct Local; +impl rpitit::Foo for Local { + fn bar() -> Arc<String> { Arc::new(String::new()) } +} + fn main() { - // Witness an RPITIT from another crate - let () = <rpitit::Foreign as rpitit::Foo>::bar(); + // Witness an RPITIT from another crate. + let &() = <rpitit::Foreign as rpitit::Foo>::bar(); + + let x: Arc<String> = <Local as rpitit::Foo>::bar(); } diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.stderr b/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr index cd42683e0..310edbcb6 100644 --- a/tests/ui/impl-trait/in-trait/generics-mismatch.stderr +++ b/tests/ui/impl-trait/in-trait/generics-mismatch.current.stderr @@ -1,5 +1,5 @@ error[E0049]: method `bar` has 1 type parameter but its trait declaration has 0 type parameters - --> $DIR/generics-mismatch.rs:11:12 + --> $DIR/generics-mismatch.rs:14:12 | LL | fn bar(&self) -> impl Sized; | - expected 0 type parameters diff --git a/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr b/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr new file mode 100644 index 000000000..310edbcb6 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/generics-mismatch.next.stderr @@ -0,0 +1,12 @@ +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.rs b/tests/ui/impl-trait/in-trait/generics-mismatch.rs index cc0fc720e..9259ca193 100644 --- a/tests/ui/impl-trait/in-trait/generics-mismatch.rs +++ b/tests/ui/impl-trait/in-trait/generics-mismatch.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/issue-102140.stderr b/tests/ui/impl-trait/in-trait/issue-102140.current.stderr index 18bb63745..7aa7880e2 100644 --- a/tests/ui/impl-trait/in-trait/issue-102140.stderr +++ b/tests/ui/impl-trait/in-trait/issue-102140.current.stderr @@ -1,5 +1,5 @@ error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:23:22 + --> $DIR/issue-102140.rs:26:22 | LL | MyTrait::foo(&self) | ------------ ^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` @@ -13,7 +13,7 @@ LL + MyTrait::foo(self) | error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:23:9 + --> $DIR/issue-102140.rs:26:9 | LL | MyTrait::foo(&self) | ^^^^^^^^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` @@ -21,7 +21,7 @@ LL | MyTrait::foo(&self) = help: the trait `MyTrait` is implemented for `Outer` error[E0277]: the trait bound `&dyn MyTrait: MyTrait` is not satisfied - --> $DIR/issue-102140.rs:23:9 + --> $DIR/issue-102140.rs:26:9 | LL | MyTrait::foo(&self) | ^^^^^^^^^^^^ the trait `MyTrait` is not implemented for `&dyn MyTrait` diff --git a/tests/ui/impl-trait/in-trait/issue-102140.next.stderr b/tests/ui/impl-trait/in-trait/issue-102140.next.stderr new file mode 100644 index 000000000..7aa7880e2 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/issue-102140.next.stderr @@ -0,0 +1,33 @@ +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.rs b/tests/ui/impl-trait/in-trait/issue-102140.rs index be1e012ac..4dcac4f5b 100644 --- a/tests/ui/impl-trait/in-trait/issue-102140.rs +++ b/tests/ui/impl-trait/in-trait/issue-102140.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/issue-102301.rs b/tests/ui/impl-trait/in-trait/issue-102301.rs index a93714a65..1329ca29d 100644 --- a/tests/ui/impl-trait/in-trait/issue-102301.rs +++ b/tests/ui/impl-trait/in-trait/issue-102301.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/issue-102571.stderr b/tests/ui/impl-trait/in-trait/issue-102571.current.stderr index 87219941d..cac9a29f6 100644 --- a/tests/ui/impl-trait/in-trait/issue-102571.stderr +++ b/tests/ui/impl-trait/in-trait/issue-102571.current.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/issue-102571.rs:20:9 + --> $DIR/issue-102571.rs:23:9 | LL | let () = t.bar(); | ^^ ------- this expression has type `impl Deref<Target = impl std::fmt::Display + ?Sized>` diff --git a/tests/ui/impl-trait/in-trait/issue-102571.next.stderr b/tests/ui/impl-trait/in-trait/issue-102571.next.stderr new file mode 100644 index 000000000..cac9a29f6 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/issue-102571.next.stderr @@ -0,0 +1,14 @@ +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.rs b/tests/ui/impl-trait/in-trait/issue-102571.rs index 61c91e644..f0ddab5e7 100644 --- a/tests/ui/impl-trait/in-trait/issue-102571.rs +++ b/tests/ui/impl-trait/in-trait/issue-102571.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/nested-rpitit.rs b/tests/ui/impl-trait/in-trait/nested-rpitit.rs index 65285e3a3..360207537 100644 --- a/tests/ui/impl-trait/in-trait/nested-rpitit.rs +++ b/tests/ui/impl-trait/in-trait/nested-rpitit.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/new-lowering-strategy/simple-trait.rs b/tests/ui/impl-trait/in-trait/new-lowering-strategy/simple-trait.rs deleted file mode 100644 index dfce973d7..000000000 --- a/tests/ui/impl-trait/in-trait/new-lowering-strategy/simple-trait.rs +++ /dev/null @@ -1,11 +0,0 @@ -// check-pass -// compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty - -#![feature(return_position_impl_trait_in_trait)] -#![allow(incomplete_features)] - -trait Foo { - fn foo() -> impl Sized; -} - -fn main() {} diff --git a/tests/ui/impl-trait/in-trait/object-safety.stderr b/tests/ui/impl-trait/in-trait/object-safety.current.stderr index ca0e760ff..b7f2b019a 100644 --- a/tests/ui/impl-trait/in-trait/object-safety.stderr +++ b/tests/ui/impl-trait/in-trait/object-safety.current.stderr @@ -1,11 +1,11 @@ error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:17:33 + --> $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:7:22 + --> $DIR/object-safety.rs:10:22 | LL | trait Foo { | --- this trait cannot be made into an object... @@ -14,13 +14,13 @@ LL | fn baz(&self) -> impl Debug; = help: consider moving `baz` to another trait error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:20:13 + --> $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:7:22 + --> $DIR/object-safety.rs:10:22 | LL | trait Foo { | --- this trait cannot be made into an object... @@ -29,13 +29,13 @@ LL | fn baz(&self) -> impl Debug; = help: consider moving `baz` to another trait error[E0038]: the trait `Foo` cannot be made into an object - --> $DIR/object-safety.rs:17:13 + --> $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:7:22 + --> $DIR/object-safety.rs:10:22 | LL | trait Foo { | --- this trait cannot be made into an object... diff --git a/tests/ui/impl-trait/in-trait/object-safety.next.stderr b/tests/ui/impl-trait/in-trait/object-safety.next.stderr new file mode 100644 index 000000000..b7f2b019a --- /dev/null +++ b/tests/ui/impl-trait/in-trait/object-safety.next.stderr @@ -0,0 +1,50 @@ +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 `Box<u32>` to implement `CoerceUnsized<Box<dyn Foo>>` + = note: required by cast to type `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.rs b/tests/ui/impl-trait/in-trait/object-safety.rs index dd35b9a2d..016a0aaae 100644 --- a/tests/ui/impl-trait/in-trait/object-safety.rs +++ b/tests/ui/impl-trait/in-trait/object-safety.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.stderr b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.current.stderr index 15edda483..a57653b2c 100644 --- a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.stderr +++ b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.current.stderr @@ -1,5 +1,5 @@ error[E0308]: mismatched types - --> $DIR/opaque-in-impl-is-opaque.rs:17:19 + --> $DIR/opaque-in-impl-is-opaque.rs:20:19 | LL | fn bar(&self) -> impl Display { | ------------ the found opaque type 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 new file mode 100644 index 000000000..a57653b2c --- /dev/null +++ b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.next.stderr @@ -0,0 +1,17 @@ +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.rs b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.rs index 3ac264e8e..c07ece15a 100644 --- a/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.rs +++ b/tests/ui/impl-trait/in-trait/opaque-in-impl-is-opaque.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/opaque-in-impl.rs b/tests/ui/impl-trait/in-trait/opaque-in-impl.rs index 2e0662969..f48d9fa26 100644 --- a/tests/ui/impl-trait/in-trait/opaque-in-impl.rs +++ b/tests/ui/impl-trait/in-trait/opaque-in-impl.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/reveal.rs b/tests/ui/impl-trait/in-trait/reveal.rs index d6ede1cc4..1f42ec744 100644 --- a/tests/ui/impl-trait/in-trait/reveal.rs +++ b/tests/ui/impl-trait/in-trait/reveal.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.stderr b/tests/ui/impl-trait/in-trait/signature-mismatch.current.stderr index c4fcaabe4..eba270af7 100644 --- a/tests/ui/impl-trait/in-trait/signature-mismatch.stderr +++ b/tests/ui/impl-trait/in-trait/signature-mismatch.current.stderr @@ -1,5 +1,5 @@ error: `impl` item signature doesn't match `trait` item signature - --> $DIR/signature-mismatch.rs:15:5 + --> $DIR/signature-mismatch.rs:17:5 | LL | fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>; | ----------------------------------------------------------------- expected `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '3` diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.next.stderr b/tests/ui/impl-trait/in-trait/signature-mismatch.next.stderr new file mode 100644 index 000000000..eba270af7 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/signature-mismatch.next.stderr @@ -0,0 +1,16 @@ +error: `impl` item signature doesn't match `trait` item signature + --> $DIR/signature-mismatch.rs:17:5 + | +LL | fn async_fn(&self, buff: &[u8]) -> impl Future<Output = Vec<u8>>; + | ----------------------------------------------------------------- expected `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '3` +... +LL | fn async_fn<'a>(&self, buff: &'a [u8]) -> impl Future<Output = Vec<u8>> + 'a { + | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ found `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '2` + | + = note: expected signature `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '3` + found signature `fn(&'1 Struct, &'2 [u8]) -> impl Future<Output = Vec<u8>> + '2` + = help: the lifetime requirements from the `impl` do not correspond to the requirements in the `trait` + = help: verify the lifetime relationships in the `trait` and `impl` between the `self` argument, the other inputs and its output + +error: aborting due to previous error + diff --git a/tests/ui/impl-trait/in-trait/signature-mismatch.rs b/tests/ui/impl-trait/in-trait/signature-mismatch.rs index 90682631a..38c902a97 100644 --- a/tests/ui/impl-trait/in-trait/signature-mismatch.rs +++ b/tests/ui/impl-trait/in-trait/signature-mismatch.rs @@ -1,4 +1,6 @@ // edition:2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.stderr b/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr index dc621d6b8..f48e7a1ed 100644 --- a/tests/ui/impl-trait/in-trait/specialization-broken.stderr +++ b/tests/ui/impl-trait/in-trait/specialization-broken.current.stderr @@ -1,5 +1,5 @@ error[E0053]: method `bar` has an incompatible type for trait - --> $DIR/specialization-broken.rs:16:22 + --> $DIR/specialization-broken.rs:19:22 | LL | default impl<U> Foo for U | - this type parameter @@ -11,7 +11,7 @@ LL | fn bar(&self) -> U { | help: change the output type to match the trait: `impl Sized` | note: type in trait - --> $DIR/specialization-broken.rs:9:22 + --> $DIR/specialization-broken.rs:12:22 | LL | fn bar(&self) -> impl Sized; | ^^^^^^^^^^ @@ -19,7 +19,7 @@ LL | fn bar(&self) -> impl Sized; found signature `fn(&U) -> U` error: method with return-position `impl Trait` in trait cannot be specialized - --> $DIR/specialization-broken.rs:16:5 + --> $DIR/specialization-broken.rs:19:5 | LL | fn bar(&self) -> U { | ^^^^^^^^^^^^^^^^^^ diff --git a/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr b/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr new file mode 100644 index 000000000..f48e7a1ed --- /dev/null +++ b/tests/ui/impl-trait/in-trait/specialization-broken.next.stderr @@ -0,0 +1,31 @@ +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.rs b/tests/ui/impl-trait/in-trait/specialization-broken.rs index 2fcffdf3f..658d07097 100644 --- a/tests/ui/impl-trait/in-trait/specialization-broken.rs +++ b/tests/ui/impl-trait/in-trait/specialization-broken.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + // FIXME(compiler-errors): I'm not exactly sure if this is expected to pass or not. // But we fixed an ICE anyways. diff --git a/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs b/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs index c9ee877db..dbc5d38f1 100644 --- a/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs +++ b/tests/ui/impl-trait/in-trait/specialization-substs-remap.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(specialization)] #![feature(return_position_impl_trait_in_trait)] diff --git a/tests/ui/impl-trait/in-trait/success.rs b/tests/ui/impl-trait/in-trait/success.rs index 4cbe682b4..0e69e0490 100644 --- a/tests/ui/impl-trait/in-trait/success.rs +++ b/tests/ui/impl-trait/in-trait/success.rs @@ -1,4 +1,6 @@ // check-pass +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.stderr b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.current.stderr index 8ff54cad9..64c942705 100644 --- a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.stderr +++ b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.current.stderr @@ -1,5 +1,5 @@ error[E0049]: method `bar` has 0 type parameters but its trait declaration has 1 type parameter - --> $DIR/trait-more-generics-than-impl.rs:11:11 + --> $DIR/trait-more-generics-than-impl.rs:14:11 | LL | fn bar<T>() -> impl Sized; | - expected 1 type parameter 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 new file mode 100644 index 000000000..64c942705 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.next.stderr @@ -0,0 +1,12 @@ +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.rs b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.rs index 0bbe50ea6..c2e394a1f 100644 --- a/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.rs +++ b/tests/ui/impl-trait/in-trait/trait-more-generics-than-impl.rs @@ -1,3 +1,6 @@ +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next + #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/in-trait/wf-bounds.stderr b/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr index 03cc4c2b9..1a7071612 100644 --- a/tests/ui/impl-trait/in-trait/wf-bounds.stderr +++ b/tests/ui/impl-trait/in-trait/wf-bounds.current.stderr @@ -1,5 +1,5 @@ error[E0277]: the size for values of type `[u8]` cannot be known at compilation time - --> $DIR/wf-bounds.rs:9:22 + --> $DIR/wf-bounds.rs:13:22 | LL | fn nya() -> impl Wf<Vec<[u8]>>; | ^^^^^^^^^^^^^ doesn't have a size known at compile-time @@ -9,22 +9,32 @@ 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:12:23 + --> $DIR/wf-bounds.rs:16:23 | 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:6:10 + --> $DIR/wf-bounds.rs:8:10 | -LL | trait Wf<T> {} +LL | trait Wf<T> { | ^ required by this bound in `Wf` help: consider relaxing the implicit `Sized` restriction | -LL | trait Wf<T: ?Sized> {} +LL | trait Wf<T: ?Sized> { | ++++++++ -error: aborting due to 2 previous errors +error[E0277]: the size for values of type `[u8]` cannot be known at compilation time + --> $DIR/wf-bounds.rs:19:44 + | +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: 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/wf-bounds.next.stderr b/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr new file mode 100644 index 000000000..1a7071612 --- /dev/null +++ b/tests/ui/impl-trait/in-trait/wf-bounds.next.stderr @@ -0,0 +1,40 @@ +error[E0277]: the size for values of type `[u8]` cannot be known at compilation time + --> $DIR/wf-bounds.rs:13:22 + | +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:16:23 + | +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:8:10 + | +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:19:44 + | +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: 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/wf-bounds.rs b/tests/ui/impl-trait/in-trait/wf-bounds.rs index 2c71583b3..1c9590bd8 100644 --- a/tests/ui/impl-trait/in-trait/wf-bounds.rs +++ b/tests/ui/impl-trait/in-trait/wf-bounds.rs @@ -1,9 +1,13 @@ // issue #101663 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] -trait Wf<T> {} +trait Wf<T> { + type Output; +} trait Uwu { fn nya() -> impl Wf<Vec<[u8]>>; @@ -11,6 +15,9 @@ trait Uwu { fn nya2() -> impl Wf<[u8]>; //~^ ERROR the size for values of type `[u8]` cannot be known at compilation time + + fn nya3() -> impl Wf<(), Output = impl Wf<Vec<[u8]>>>; + //~^ ERROR the size for values of type `[u8]` cannot be known at compilation time } fn main() {} diff --git a/tests/ui/impl-trait/in-trait/where-clause.rs b/tests/ui/impl-trait/in-trait/where-clause.rs index 87bac519c..88d86e2b5 100644 --- a/tests/ui/impl-trait/in-trait/where-clause.rs +++ b/tests/ui/impl-trait/in-trait/where-clause.rs @@ -1,5 +1,7 @@ // check-pass // edition: 2021 +// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty +// revisions: current next #![feature(return_position_impl_trait_in_trait)] #![allow(incomplete_features)] diff --git a/tests/ui/impl-trait/issue-55872-1.rs b/tests/ui/impl-trait/issue-55872-1.rs index 22ff7ffa2..f36a310dd 100644 --- a/tests/ui/impl-trait/issue-55872-1.rs +++ b/tests/ui/impl-trait/issue-55872-1.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] pub trait Bar { type E: Copy; diff --git a/tests/ui/impl-trait/issue-55872-2.rs b/tests/ui/impl-trait/issue-55872-2.rs index cbc7b5d62..7a5cb3b3d 100644 --- a/tests/ui/impl-trait/issue-55872-2.rs +++ b/tests/ui/impl-trait/issue-55872-2.rs @@ -3,7 +3,7 @@ // [drop_tracking_mir] compile-flags: -Zdrop-tracking-mir // edition:2018 -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] pub trait Bar { type E: Send; diff --git a/tests/ui/impl-trait/issue-55872-2.stderr b/tests/ui/impl-trait/issue-55872-2.stderr deleted file mode 100644 index 477c964bd..000000000 --- a/tests/ui/impl-trait/issue-55872-2.stderr +++ /dev/null @@ -1,8 +0,0 @@ -error: type parameter `T` is part of concrete type but not used in parameter list for the `impl Trait` type alias - --> $DIR/issue-55872-2.rs:17:9 - | -LL | async {} - | ^^^^^^^^ - -error: aborting due to previous error - diff --git a/tests/ui/impl-trait/issue-55872-3.rs b/tests/ui/impl-trait/issue-55872-3.rs index 91811df93..d031271ac 100644 --- a/tests/ui/impl-trait/issue-55872-3.rs +++ b/tests/ui/impl-trait/issue-55872-3.rs @@ -1,7 +1,7 @@ // edition:2018 // ignore-compare-mode-chalk -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] pub trait Bar { type E: Copy; diff --git a/tests/ui/impl-trait/issue-55872.rs b/tests/ui/impl-trait/issue-55872.rs index c4e6f6436..10850f0a9 100644 --- a/tests/ui/impl-trait/issue-55872.rs +++ b/tests/ui/impl-trait/issue-55872.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] pub trait Bar { type E: Copy; diff --git a/tests/ui/impl-trait/issues/issue-78722.rs b/tests/ui/impl-trait/issues/issue-78722.rs index 78233f300..7b5ab5f22 100644 --- a/tests/ui/impl-trait/issues/issue-78722.rs +++ b/tests/ui/impl-trait/issues/issue-78722.rs @@ -12,7 +12,6 @@ struct Bug { } let f: F = async { 1 }; //~^ ERROR `async` blocks are not allowed in constants - //~| ERROR destructor of 1 }], } diff --git a/tests/ui/impl-trait/issues/issue-78722.stderr b/tests/ui/impl-trait/issues/issue-78722.stderr index c00df8087..05a2c135c 100644 --- a/tests/ui/impl-trait/issues/issue-78722.stderr +++ b/tests/ui/impl-trait/issues/issue-78722.stderr @@ -7,22 +7,13 @@ LL | let f: F = async { 1 }; = note: see issue #85368 <https://github.com/rust-lang/rust/issues/85368> for more information = help: add `#![feature(const_async_blocks)]` to the crate attributes to enable -error[E0493]: destructor of `F` cannot be evaluated at compile-time - --> $DIR/issue-78722.rs:13:13 - | -LL | let f: F = async { 1 }; - | ^ the destructor for this type cannot be evaluated in constants -... -LL | }], - | - value is dropped here - error[E0271]: expected `[async block@$DIR/issue-78722.rs:11:13: 11:21]` to be a future that resolves to `u8`, but it resolves to `()` --> $DIR/issue-78722.rs:9:30 | LL | fn concrete_use() -> F { | ^ expected `()`, found `u8` -error: aborting due to 3 previous errors +error: aborting due to 2 previous errors -Some errors have detailed explanations: E0271, E0493, E0658. +Some errors have detailed explanations: E0271, E0658. For more information about an error, try `rustc --explain E0271`. diff --git a/tests/ui/impl-trait/issues/issue-82139.rs b/tests/ui/impl-trait/issues/issue-82139.rs index cc9167b34..3f0b0f1a8 100644 --- a/tests/ui/impl-trait/issues/issue-82139.rs +++ b/tests/ui/impl-trait/issues/issue-82139.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] trait Trait { type Associated; diff --git a/tests/ui/impl-trait/issues/issue-83919.rs b/tests/ui/impl-trait/issues/issue-83919.rs index e76443a65..4e699e7f3 100644 --- a/tests/ui/impl-trait/issues/issue-83919.rs +++ b/tests/ui/impl-trait/issues/issue-83919.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] // edition:2021 @@ -6,8 +6,8 @@ use std::future::Future; trait Foo { type T; - type Fut2: Future<Output=Self::T>; // ICE got triggered with traits other than Future here - type Fut: Future<Output=Self::Fut2>; + type Fut2: Future<Output = Self::T>; // ICE got triggered with traits other than Future here + type Fut: Future<Output = Self::Fut2>; fn get_fut(&self) -> Self::Fut; } @@ -15,11 +15,11 @@ struct Implementor; impl Foo for Implementor { type T = u64; - type Fut2 = impl Future<Output=u64>; - type Fut = impl Future<Output=Self::Fut2>; + type Fut2 = impl Future<Output = u64>; + type Fut = impl Future<Output = Self::Fut2>; fn get_fut(&self) -> Self::Fut { - //~^ ERROR `{integer}` is not a future + //~^ ERROR `{integer}` is not a future async move { 42 // 42 does not impl Future and rustc does actually point out the error, diff --git a/tests/ui/impl-trait/issues/issue-86719.rs b/tests/ui/impl-trait/issues/issue-86719.rs index f4b0b3f33..7abab5bfb 100644 --- a/tests/ui/impl-trait/issues/issue-86719.rs +++ b/tests/ui/impl-trait/issues/issue-86719.rs @@ -1,11 +1,12 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] trait Bar { type E; } impl<S> Bar for S { type E = impl ; //~ ERROR at least one trait must be specified - fn foo() -> Self::E { //~ ERROR `foo` is not a member + fn foo() -> Self::E { + //~^ ERROR `foo` is not a member |_| true //~ ERROR type annotations needed } } diff --git a/tests/ui/impl-trait/issues/issue-86719.stderr b/tests/ui/impl-trait/issues/issue-86719.stderr index 7592418fd..15893df5f 100644 --- a/tests/ui/impl-trait/issues/issue-86719.stderr +++ b/tests/ui/impl-trait/issues/issue-86719.stderr @@ -8,12 +8,13 @@ error[E0407]: method `foo` is not a member of trait `Bar` --> $DIR/issue-86719.rs:8:5 | LL | / fn foo() -> Self::E { +LL | | LL | | |_| true LL | | } | |_____^ not a member of trait `Bar` error[E0282]: type annotations needed - --> $DIR/issue-86719.rs:9:10 + --> $DIR/issue-86719.rs:10:10 | LL | |_| true | ^ diff --git a/tests/ui/impl-trait/issues/issue-87340.rs b/tests/ui/impl-trait/issues/issue-87340.rs index f0f6d2bb6..705a4addc 100644 --- a/tests/ui/impl-trait/issues/issue-87340.rs +++ b/tests/ui/impl-trait/issues/issue-87340.rs @@ -1,4 +1,4 @@ -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] trait X { type I; @@ -6,7 +6,7 @@ trait X { } impl<T> X for () { -//~^ ERROR `T` is not constrained by the impl trait, self type, or predicates + //~^ ERROR `T` is not constrained by the impl trait, self type, or predicates type I = impl Sized; fn f() -> Self::I {} } diff --git a/tests/ui/impl-trait/multiple-lifetimes.rs b/tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs index 5407fb6dd..5407fb6dd 100644 --- a/tests/ui/impl-trait/multiple-lifetimes.rs +++ b/tests/ui/impl-trait/multiple-lifetimes/multiple-lifetimes.rs diff --git a/tests/ui/impl-trait/nested-return-type2.rs b/tests/ui/impl-trait/nested-return-type2.rs index fe883ce6f..e1d551137 100644 --- a/tests/ui/impl-trait/nested-return-type2.rs +++ b/tests/ui/impl-trait/nested-return-type2.rs @@ -26,7 +26,6 @@ impl<R: Duh, F: FnMut() -> R> Trait for F { // Lazy TAIT would error out, but we inserted a hack to make it work again, // keeping backwards compatibility. fn foo() -> impl Trait<Assoc = impl Send> { - //~^ WARN opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds || 42 } diff --git a/tests/ui/impl-trait/nested-return-type2.stderr b/tests/ui/impl-trait/nested-return-type2.stderr deleted file mode 100644 index 09ad3bd05..000000000 --- a/tests/ui/impl-trait/nested-return-type2.stderr +++ /dev/null @@ -1,17 +0,0 @@ -warning: opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds - --> $DIR/nested-return-type2.rs:28:24 - | -LL | type Assoc: Duh; - | --- this associated type bound is unsatisfied for `impl Send` -... -LL | fn foo() -> impl Trait<Assoc = impl Send> { - | ^^^^^^^^^^^^^^^^^ - | - = note: `#[warn(opaque_hidden_inferred_bound)]` on by default -help: add this bound - | -LL | fn foo() -> impl Trait<Assoc = impl Send + Duh> { - | +++++ - -warning: 1 warning emitted - diff --git a/tests/ui/impl-trait/nested-return-type3.rs b/tests/ui/impl-trait/nested-return-type3.rs index 5a764fc4c..74b4dae22 100644 --- a/tests/ui/impl-trait/nested-return-type3.rs +++ b/tests/ui/impl-trait/nested-return-type3.rs @@ -13,7 +13,6 @@ impl<F: Duh> Trait for F { } fn foo() -> impl Trait<Assoc = impl Send> { - //~^ WARN opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds 42 } diff --git a/tests/ui/impl-trait/nested-return-type3.stderr b/tests/ui/impl-trait/nested-return-type3.stderr deleted file mode 100644 index 632de71aa..000000000 --- a/tests/ui/impl-trait/nested-return-type3.stderr +++ /dev/null @@ -1,17 +0,0 @@ -warning: opaque type `impl Trait<Assoc = impl Send>` does not satisfy its associated type bounds - --> $DIR/nested-return-type3.rs:15:24 - | -LL | type Assoc: Duh; - | --- this associated type bound is unsatisfied for `impl Send` -... -LL | fn foo() -> impl Trait<Assoc = impl Send> { - | ^^^^^^^^^^^^^^^^^ - | - = note: `#[warn(opaque_hidden_inferred_bound)]` on by default -help: add this bound - | -LL | fn foo() -> impl Trait<Assoc = impl Send + Duh> { - | +++++ - -warning: 1 warning emitted - diff --git a/tests/ui/impl-trait/no-method-suggested-traits.stderr b/tests/ui/impl-trait/no-method-suggested-traits.stderr index 3c2c01dc2..160cc0440 100644 --- a/tests/ui/impl-trait/no-method-suggested-traits.stderr +++ b/tests/ui/impl-trait/no-method-suggested-traits.stderr @@ -7,13 +7,13 @@ LL | 1u32.method(); = help: items from traits can only be used if the trait is in scope help: the following traits are implemented but not in scope; perhaps add a `use` for one of them: | -LL | use foo::Bar; +LL + use foo::Bar; | -LL | use no_method_suggested_traits::Reexported; +LL + use no_method_suggested_traits::Reexported; | -LL | use no_method_suggested_traits::foo::PubPub; +LL + use no_method_suggested_traits::foo::PubPub; | -LL | use no_method_suggested_traits::qux::PrivPub; +LL + use no_method_suggested_traits::qux::PrivPub; | error[E0599]: no method named `method` found for struct `Rc<&mut Box<&u32>>` in the current scope @@ -25,13 +25,13 @@ LL | std::rc::Rc::new(&mut Box::new(&1u32)).method(); = help: items from traits can only be used if the trait is in scope help: the following traits are implemented but not in scope; perhaps add a `use` for one of them: | -LL | use foo::Bar; +LL + use foo::Bar; | -LL | use no_method_suggested_traits::Reexported; +LL + use no_method_suggested_traits::Reexported; | -LL | use no_method_suggested_traits::foo::PubPub; +LL + use no_method_suggested_traits::foo::PubPub; | -LL | use no_method_suggested_traits::qux::PrivPub; +LL + use no_method_suggested_traits::qux::PrivPub; | error[E0599]: no method named `method` found for type `char` in the current scope @@ -46,7 +46,7 @@ LL | 'a'.method(); = help: items from traits can only be used if the trait is in scope help: the following trait is implemented but not in scope; perhaps add a `use` for it: | -LL | use foo::Bar; +LL + use foo::Bar; | error[E0599]: no method named `method` found for struct `Rc<&mut Box<&char>>` in the current scope @@ -58,7 +58,7 @@ LL | std::rc::Rc::new(&mut Box::new(&'a')).method(); = help: items from traits can only be used if the trait is in scope help: the following trait is implemented but not in scope; perhaps add a `use` for it: | -LL | use foo::Bar; +LL + use foo::Bar; | error[E0599]: no method named `method` found for type `i32` in the current scope @@ -75,7 +75,7 @@ LL | fn method(&self) {} = help: items from traits can only be used if the trait is in scope help: the following trait is implemented but not in scope; perhaps add a `use` for it: | -LL | use no_method_suggested_traits::foo::PubPub; +LL + use no_method_suggested_traits::foo::PubPub; | error[E0599]: no method named `method` found for struct `Rc<&mut Box<&i32>>` in the current scope @@ -87,7 +87,7 @@ LL | std::rc::Rc::new(&mut Box::new(&1i32)).method(); = help: items from traits can only be used if the trait is in scope help: the following trait is implemented but not in scope; perhaps add a `use` for it: | -LL | use no_method_suggested_traits::foo::PubPub; +LL + use no_method_suggested_traits::foo::PubPub; | error[E0599]: no method named `method` found for struct `Foo` in the current scope diff --git a/tests/ui/impl-trait/recursive-impl-trait-type-indirect.drop_tracking_mir.stderr b/tests/ui/impl-trait/recursive-impl-trait-type-indirect.drop_tracking_mir.stderr index 662c74bcd..9c67f17e9 100644 --- a/tests/ui/impl-trait/recursive-impl-trait-type-indirect.drop_tracking_mir.stderr +++ b/tests/ui/impl-trait/recursive-impl-trait-type-indirect.drop_tracking_mir.stderr @@ -114,6 +114,9 @@ error[E0720]: cannot resolve opaque type | LL | fn generator_hold() -> impl Sized { | ^^^^^^^^^^ recursive opaque type +... +LL | let x = generator_hold(); + | - generator captures itself here error[E0720]: cannot resolve opaque type --> $DIR/recursive-impl-trait-type-indirect.rs:90:26 diff --git a/tests/ui/impl-trait/type-alias-generic-param.rs b/tests/ui/impl-trait/type-alias-generic-param.rs index 3499b2859..1211625da 100644 --- a/tests/ui/impl-trait/type-alias-generic-param.rs +++ b/tests/ui/impl-trait/type-alias-generic-param.rs @@ -3,7 +3,7 @@ // types in 'item' position when generic parameters are involved // // run-pass -#![feature(type_alias_impl_trait)] +#![feature(impl_trait_in_assoc_type)] trait Meow { type MeowType; diff --git a/tests/ui/impl-trait/universal_wrong_bounds.stderr b/tests/ui/impl-trait/universal_wrong_bounds.stderr index 3b1a5e5f4..464d68958 100644 --- a/tests/ui/impl-trait/universal_wrong_bounds.stderr +++ b/tests/ui/impl-trait/universal_wrong_bounds.stderr @@ -6,7 +6,7 @@ LL | fn wants_debug(g: impl Debug) { } | help: consider importing this trait instead | -LL | use std::fmt::Debug; +LL + use std::fmt::Debug; | error[E0404]: expected trait, found derive macro `Debug` @@ -17,7 +17,7 @@ LL | fn wants_display(g: impl Debug) { } | help: consider importing this trait instead | -LL | use std::fmt::Debug; +LL + use std::fmt::Debug; | error: aborting due to 2 previous errors diff --git a/tests/ui/impl-trait/where-allowed.rs b/tests/ui/impl-trait/where-allowed.rs index ff63b04c2..509d27166 100644 --- a/tests/ui/impl-trait/where-allowed.rs +++ b/tests/ui/impl-trait/where-allowed.rs @@ -1,6 +1,8 @@ //! A simple test for testing many permutations of allowedness of //! impl Trait #![feature(impl_trait_in_fn_trait_return)] +#![feature(custom_inner_attributes)] +#![rustfmt::skip] use std::fmt::Debug; // Allowed @@ -116,7 +118,7 @@ trait DummyTrait { } impl DummyTrait for () { type Out = impl Debug; - //~^ ERROR `impl Trait` in type aliases is unstable + //~^ ERROR `impl Trait` in associated types is unstable fn in_trait_impl_parameter(_: impl Debug) { } // Allowed diff --git a/tests/ui/impl-trait/where-allowed.stderr b/tests/ui/impl-trait/where-allowed.stderr index 1cae3f77c..3e2934379 100644 --- a/tests/ui/impl-trait/where-allowed.stderr +++ b/tests/ui/impl-trait/where-allowed.stderr @@ -1,5 +1,5 @@ error[E0666]: nested `impl Trait` is not allowed - --> $DIR/where-allowed.rs:47:51 + --> $DIR/where-allowed.rs:49:51 | LL | fn in_impl_Fn_parameter_in_parameters(_: &impl Fn(impl Debug)) { panic!() } | --------^^^^^^^^^^- @@ -8,7 +8,7 @@ LL | fn in_impl_Fn_parameter_in_parameters(_: &impl Fn(impl Debug)) { panic!() } | outer `impl Trait` error[E0666]: nested `impl Trait` is not allowed - --> $DIR/where-allowed.rs:56:57 + --> $DIR/where-allowed.rs:58:57 | LL | fn in_impl_Fn_parameter_in_return() -> &'static impl Fn(impl Debug) { panic!() } | --------^^^^^^^^^^- @@ -16,17 +16,17 @@ LL | fn in_impl_Fn_parameter_in_return() -> &'static impl Fn(impl Debug) { panic | | nested `impl Trait` here | outer `impl Trait` -error[E0658]: `impl Trait` in type aliases is unstable - --> $DIR/where-allowed.rs:118:16 +error[E0658]: `impl Trait` in associated types is unstable + --> $DIR/where-allowed.rs:120:16 | LL | type Out = impl Debug; | ^^^^^^^^^^ | = note: see issue #63063 <https://github.com/rust-lang/rust/issues/63063> for more information - = help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable + = help: add `#![feature(impl_trait_in_assoc_type)]` to the crate attributes to enable error[E0658]: `impl Trait` in type aliases is unstable - --> $DIR/where-allowed.rs:153:23 + --> $DIR/where-allowed.rs:155:23 | LL | type InTypeAlias<R> = impl Debug; | ^^^^^^^^^^ @@ -35,7 +35,7 @@ LL | type InTypeAlias<R> = impl Debug; = help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable error[E0658]: `impl Trait` in type aliases is unstable - --> $DIR/where-allowed.rs:156:39 + --> $DIR/where-allowed.rs:158:39 | LL | type InReturnInTypeAlias<R> = fn() -> impl Debug; | ^^^^^^^^^^ @@ -44,109 +44,109 @@ LL | type InReturnInTypeAlias<R> = fn() -> impl Debug; = help: add `#![feature(type_alias_impl_trait)]` to the crate attributes to enable error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `fn` pointer params - --> $DIR/where-allowed.rs:16:40 + --> $DIR/where-allowed.rs:18:40 | LL | fn in_fn_parameter_in_parameters(_: fn(impl Debug)) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `fn` pointer return types - --> $DIR/where-allowed.rs:20:42 + --> $DIR/where-allowed.rs:22:42 | LL | fn in_fn_return_in_parameters(_: fn() -> impl Debug) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `fn` pointer params - --> $DIR/where-allowed.rs:24:38 + --> $DIR/where-allowed.rs:26:38 | LL | fn in_fn_parameter_in_return() -> fn(impl Debug) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `fn` pointer return types - --> $DIR/where-allowed.rs:28:40 + --> $DIR/where-allowed.rs:30:40 | LL | fn in_fn_return_in_return() -> fn() -> impl Debug { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait params - --> $DIR/where-allowed.rs:32:49 + --> $DIR/where-allowed.rs:34:49 | LL | fn in_dyn_Fn_parameter_in_parameters(_: &dyn Fn(impl Debug)) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait return types - --> $DIR/where-allowed.rs:36:51 + --> $DIR/where-allowed.rs:38:51 | LL | fn in_dyn_Fn_return_in_parameters(_: &dyn Fn() -> impl Debug) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait params - --> $DIR/where-allowed.rs:40:55 + --> $DIR/where-allowed.rs:42:55 | LL | fn in_dyn_Fn_parameter_in_return() -> &'static dyn Fn(impl Debug) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait params - --> $DIR/where-allowed.rs:47:51 + --> $DIR/where-allowed.rs:49:51 | LL | fn in_impl_Fn_parameter_in_parameters(_: &impl Fn(impl Debug)) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait return types - --> $DIR/where-allowed.rs:52:53 + --> $DIR/where-allowed.rs:54:53 | LL | fn in_impl_Fn_return_in_parameters(_: &impl Fn() -> impl Debug) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait params - --> $DIR/where-allowed.rs:56:57 + --> $DIR/where-allowed.rs:58:57 | LL | fn in_impl_Fn_parameter_in_return() -> &'static impl Fn(impl Debug) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait params - --> $DIR/where-allowed.rs:64:38 + --> $DIR/where-allowed.rs:66:38 | LL | fn in_Fn_parameter_in_generics<F: Fn(impl Debug)> (_: F) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait return types - --> $DIR/where-allowed.rs:68:40 + --> $DIR/where-allowed.rs:70:40 | LL | fn in_Fn_return_in_generics<F: Fn() -> impl Debug> (_: F) { panic!() } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in field types - --> $DIR/where-allowed.rs:81:32 + --> $DIR/where-allowed.rs:83:32 | LL | struct InBraceStructField { x: impl Debug } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in field types - --> $DIR/where-allowed.rs:85:41 + --> $DIR/where-allowed.rs:87:41 | LL | struct InAdtInBraceStructField { x: Vec<impl Debug> } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in field types - --> $DIR/where-allowed.rs:89:27 + --> $DIR/where-allowed.rs:91:27 | LL | struct InTupleStructField(impl Debug); | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in field types - --> $DIR/where-allowed.rs:94:25 + --> $DIR/where-allowed.rs:96:25 | LL | InBraceVariant { x: impl Debug }, | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in field types - --> $DIR/where-allowed.rs:96:20 + --> $DIR/where-allowed.rs:98:20 | LL | InTupleVariant(impl Debug), | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in trait method return types - --> $DIR/where-allowed.rs:107:23 + --> $DIR/where-allowed.rs:109:23 | LL | fn in_return() -> impl Debug; | ^^^^^^^^^^ @@ -155,7 +155,7 @@ LL | fn in_return() -> impl Debug; = help: add `#![feature(return_position_impl_trait_in_trait)]` to the crate attributes to enable error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `impl` method return types - --> $DIR/where-allowed.rs:124:34 + --> $DIR/where-allowed.rs:126:34 | LL | fn in_trait_impl_return() -> impl Debug { () } | ^^^^^^^^^^ @@ -164,127 +164,127 @@ LL | fn in_trait_impl_return() -> impl Debug { () } = help: add `#![feature(return_position_impl_trait_in_trait)]` to the crate attributes to enable error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `extern fn` params - --> $DIR/where-allowed.rs:137:33 + --> $DIR/where-allowed.rs:139:33 | LL | fn in_foreign_parameters(_: impl Debug); | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `extern fn` return types - --> $DIR/where-allowed.rs:140:31 + --> $DIR/where-allowed.rs:142:31 | LL | fn in_foreign_return() -> impl Debug; | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `fn` pointer return types - --> $DIR/where-allowed.rs:156:39 + --> $DIR/where-allowed.rs:158:39 | LL | type InReturnInTypeAlias<R> = fn() -> impl Debug; | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in traits - --> $DIR/where-allowed.rs:161:16 + --> $DIR/where-allowed.rs:163:16 | LL | impl PartialEq<impl Debug> for () { | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in impl headers - --> $DIR/where-allowed.rs:166:24 + --> $DIR/where-allowed.rs:168:24 | LL | impl PartialEq<()> for impl Debug { | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in impl headers - --> $DIR/where-allowed.rs:171:6 + --> $DIR/where-allowed.rs:173:6 | LL | impl impl Debug { | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in impl headers - --> $DIR/where-allowed.rs:177:24 + --> $DIR/where-allowed.rs:179:24 | LL | impl InInherentImplAdt<impl Debug> { | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in bounds - --> $DIR/where-allowed.rs:183:11 + --> $DIR/where-allowed.rs:185:11 | LL | where impl Debug: Debug | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in bounds - --> $DIR/where-allowed.rs:190:15 + --> $DIR/where-allowed.rs:192:15 | LL | where Vec<impl Debug>: Debug | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in bounds - --> $DIR/where-allowed.rs:197:24 + --> $DIR/where-allowed.rs:199:24 | LL | where T: PartialEq<impl Debug> | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait params - --> $DIR/where-allowed.rs:204:17 + --> $DIR/where-allowed.rs:206:17 | LL | where T: Fn(impl Debug) | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in `Fn` trait return types - --> $DIR/where-allowed.rs:211:22 + --> $DIR/where-allowed.rs:213:22 | LL | where T: Fn() -> impl Debug | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in generic parameter defaults - --> $DIR/where-allowed.rs:217:40 + --> $DIR/where-allowed.rs:219:40 | LL | struct InStructGenericParamDefault<T = impl Debug>(T); | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in generic parameter defaults - --> $DIR/where-allowed.rs:221:36 + --> $DIR/where-allowed.rs:223:36 | LL | enum InEnumGenericParamDefault<T = impl Debug> { Variant(T) } | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in generic parameter defaults - --> $DIR/where-allowed.rs:225:38 + --> $DIR/where-allowed.rs:227:38 | LL | trait InTraitGenericParamDefault<T = impl Debug> {} | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in generic parameter defaults - --> $DIR/where-allowed.rs:229:41 + --> $DIR/where-allowed.rs:231:41 | LL | type InTypeAliasGenericParamDefault<T = impl Debug> = T; | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in generic parameter defaults - --> $DIR/where-allowed.rs:233:11 + --> $DIR/where-allowed.rs:235:11 | LL | impl <T = impl Debug> T {} | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in generic parameter defaults - --> $DIR/where-allowed.rs:240:40 + --> $DIR/where-allowed.rs:242:40 | LL | fn in_method_generic_param_default<T = impl Debug>(_: T) {} | ^^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in variable bindings - --> $DIR/where-allowed.rs:246:29 + --> $DIR/where-allowed.rs:248:29 | LL | let _in_local_variable: impl Fn() = || {}; | ^^^^^^^^^ error[E0562]: `impl Trait` only allowed in function and inherent method return types, not in closure return types - --> $DIR/where-allowed.rs:248:46 + --> $DIR/where-allowed.rs:250:46 | LL | let _in_return_in_local_variable = || -> impl Fn() { || {} }; | ^^^^^^^^^ error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions - --> $DIR/where-allowed.rs:233:7 + --> $DIR/where-allowed.rs:235:7 | LL | impl <T = impl Debug> T {} | ^^^^^^^^^^^^^^ @@ -294,7 +294,7 @@ LL | impl <T = impl Debug> T {} = note: `#[deny(invalid_type_param_default)]` on by default error: defaults for type parameters are only allowed in `struct`, `enum`, `type`, or `trait` definitions - --> $DIR/where-allowed.rs:240:36 + --> $DIR/where-allowed.rs:242:36 | LL | fn in_method_generic_param_default<T = impl Debug>(_: T) {} | ^^^^^^^^^^^^^^ @@ -303,7 +303,7 @@ LL | fn in_method_generic_param_default<T = impl Debug>(_: T) {} = note: for more information, see issue #36887 <https://github.com/rust-lang/rust/issues/36887> error[E0118]: no nominal type found for inherent implementation - --> $DIR/where-allowed.rs:233:1 + --> $DIR/where-allowed.rs:235:1 | LL | impl <T = impl Debug> T {} | ^^^^^^^^^^^^^^^^^^^^^^^ impl requires a nominal type |