rust/tests/ui/type-alias-impl-trait/coherence_generalization.rs

17 lines
362 B
Rust

//@ check-pass
// FIXME(type_alias_impl_trait): What does this test? This needs a comment
// explaining what we're worried about here.
#![feature(type_alias_impl_trait)]
trait Trait {}
type Opaque<T> = impl Sized;
fn foo<T>() -> Opaque<T> {
()
}
impl<T, U, V> Trait for (T, U, V, V, u32) {}
impl<U, V> Trait for (Opaque<U>, U, V, i32, V) {}
fn main() {}