src/test/ui/async-await/in-trait/async-example-desugared-boxed.rs

   1 // check-pass
   2 // edition: 2021
   3
   4 #![feature(async_fn_in_trait)]
   5 #![feature(return_position_impl_trait_in_trait)]
   6 #![allow(incomplete_features)]
   7
   8 use std::future::Future;
   9 use std::pin::Pin;
  10
  11 trait MyTrait {
  12     async fn foo(&self) -> i32;
  13 }
  14
  15 impl MyTrait for i32 {
  16     // This will break once a PR that implements #102745 is merged
  17     fn foo(&self) -> Pin<Box<dyn Future<Output = i32> + '_>> {
  18         Box::pin(async {
  19             *self
  20         })
  21     }
  22 }
  23
  24 fn main() {}