| // Regression test for issue #68368 | |
| // Ensures that we don't ICE when emitting an error | |
| // for a non-defining use when lifetimes are involved | |
| #![feature(type_alias_impl_trait)] | |
| trait Trait<T> {} | |
| type Alias<'a, U> = impl Trait<U>; //~ ERROR could not find defining uses | |
| fn f<'a>() -> Alias<'a, ()> {} | |
| //~^ ERROR defining opaque type use does not fully define opaque type: generic parameter `U` | |
| fn main() {} | |
| impl Trait<()> for () {} |