1 // revisions: min_tait full_tait
2 #![feature(min_type_alias_impl_trait)]
3 #![cfg_attr(full_tait, feature(type_alias_impl_trait))]
4 //[full_tait]~^ WARN incomplete
10 // test that unused generic parameters are ok
11 type Two<T, U> = impl Debug;
13 fn one<T: Debug>(t: T) -> Two<T, T> {
14 //~^ ERROR non-defining opaque type use in defining scope
18 fn two<T: Debug, U>(t: T, _: U) -> Two<T, U> {