src/test/ui/type-alias-impl-trait/generic_duplicate_param_use2.rs

   1 #![feature(type_alias_impl_trait)]
   2
   3 use std::fmt::Debug;
   4
   5 fn main() {}
   6
   7 // test that unused generic parameters are ok
   8 type Two<T, U> = impl Debug;
   9
  10 fn two<T: Debug, U>(t: T, _: U) -> Two<T, U> {
  11     t
  12     //~^ ERROR `T` doesn't implement `Debug`
  13 }