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Add regression test for RPITITs

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Santiago Pastorino 2023-07-07 15:58:25 -03:00
parent 3aec8d4227
commit 6d80879ab9
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3 changed files with 51 additions and 0 deletions
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16
tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.current.stderr Normal file
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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`.

16
tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.next.stderr Normal file
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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`.

19
tests/ui/impl-trait/in-trait/return-dont-satisfy-bounds.rs Normal file
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// [next] compile-flags: -Zlower-impl-trait-in-trait-to-assoc-ty
// revisions: current next
#![feature(return_position_impl_trait_in_trait)]
trait Foo<T> {
fn foo<F2>(self) -> impl Foo<T>;
}
struct Bar;
impl Foo<char> for Bar {
fn foo<F2: Foo<u8>>(self) -> impl Foo<u8> {
//~^ ERROR: the trait bound `impl Foo<u8>: Foo<char>` is not satisfied [E0277]
self
}
}
fn main() {}