src/test/ui/issues/issue-59001.rs

   1 // compile-pass
   2 // edition:2018
   3
   4 #![feature(async_await, await_macro)]
   5
   6 use std::future::Future;
   7
   8 #[allow(unused)]
   9 async fn enter<'a, F, R>(mut callback: F)
  10 where
  11     F: FnMut(&'a mut i32) -> R,
  12     R: Future<Output = ()> + 'a,
  13 {
  14     unimplemented!()
  15 }
  16
  17 fn main() {}