src/test/ui/type-alias-impl-trait/weird-return-types.rs

   1 // edition:2018
   2 // check-pass
   3
   4 #![feature(type_alias_impl_trait)]
   5 #![allow(dead_code)]
   6
   7 use std::future::Future;
   8 use std::fmt::Debug;
   9
  10 type Foo = impl Debug;
  11
  12 fn f() -> impl Future<Output = Foo> {
  13     async move { 22_u32 }
  14 }
  15
  16 fn main() {}