src/test/ui/consts/async-block.rs

   1 // gate-test-const_async_blocks
   2
   3 // edition:2018
   4 // revisions: with_feature without_feature
   5
   6 #![feature(rustc_attrs)]
   7 #![cfg_attr(with_feature, feature(const_async_blocks))]
   8
   9 use std::future::Future;
  10
  11 // From <https://github.com/rust-lang/rust/issues/77361>
  12 const _: i32 = { core::mem::ManuallyDrop::new(async { 0 }); 4 };
  13 //[without_feature]~^ `async` block
  14
  15 static _FUT: &(dyn Future<Output = ()> + Sync) = &async {};
  16 //[without_feature]~^ `async` block
  17
  18 #[rustc_error]
  19 fn main() {} //[with_feature]~ fatal error triggered by #[rustc_error]