rust/tests/ui/impl-trait/in-trait/refine-resolution-errors.rs

24 lines
470 B
Rust

// This is a non-regression test for issue #126670 where RPITIT refinement checking encountered
// errors during resolution and ICEd.
//@ edition: 2018
pub trait Mirror {
type Assoc;
}
impl<T: ?Sized> Mirror for () {
//~^ ERROR the type parameter `T` is not constrained
type Assoc = T;
}
pub trait First {
async fn first() -> <() as Mirror>::Assoc;
//~^ ERROR type annotations needed
}
impl First for () {
async fn first() {}
}
fn main() {}