| //@ edition:2018 | |
| //@ revisions: current next | |
| //@ ignore-compare-mode-next-solver (explicit revisions) | |
| //@[next] compile-flags: -Znext-solver | |
| //@ check-pass | |
| #![feature(async_closure, unboxed_closures, async_fn_traits)] | |
| fn project<F: async Fn<()>>(_: F) -> Option<F::Output> { None } | |
| fn main() { | |
| let x: Option<i32> = project(|| async { 1i32 }); | |
| } |