rust/tests/ui/impl-trait/bound-normalization-fail.st...

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error[E0271]: type mismatch resolving `<Foo<()> as FooLike>::Output == <T as Trait>::Assoc`
--> $DIR/bound-normalization-fail.rs:25:32
|
LL | fn foo_fail<T: Trait>() -> impl FooLike<Output = T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch resolving `<Foo<()> as FooLike>::Output == <T as Trait>::Assoc`
LL |
LL | Foo(())
| ------- return type was inferred to be `Foo<()>` here
|
note: expected this to be `()`
--> $DIR/bound-normalization-fail.rs:14:19
|
LL | type Output = T;
| ^
= note: expected unit type `()`
found associated type `<T as impl_trait::Trait>::Assoc`
help: consider constraining the associated type `<T as impl_trait::Trait>::Assoc` to `()`
|
LL | fn foo_fail<T: Trait<Assoc = ()>>() -> impl FooLike<Output = T::Assoc> {
| ++++++++++++
error[E0271]: type mismatch resolving `<Foo<()> as FooLike>::Output == <T as Trait<'a>>::Assoc`
--> $DIR/bound-normalization-fail.rs:41:41
|
LL | fn foo2_fail<'a, T: Trait<'a>>() -> impl FooLike<Output = T::Assoc> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ type mismatch resolving `<Foo<()> as FooLike>::Output == <T as Trait<'a>>::Assoc`
LL |
LL | Foo(())
| ------- return type was inferred to be `Foo<()>` here
|
note: expected this to be `()`
--> $DIR/bound-normalization-fail.rs:14:19
|
LL | type Output = T;
| ^
= note: expected unit type `()`
found associated type `<T as lifetimes::Trait<'a>>::Assoc`
help: consider constraining the associated type `<T as lifetimes::Trait<'a>>::Assoc` to `()`
|
LL | fn foo2_fail<'a, T: Trait<'a, Assoc = ()>>() -> impl FooLike<Output = T::Assoc> {
| ++++++++++++
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0271`.