rust/tests/ui/let_underscore_future.rs
2022-10-31 12:50:59 -07:00

21 lines
398 B
Rust

use std::future::Future;
async fn some_async_fn() {}
fn sync_side_effects() {}
fn custom() -> impl Future<Output = ()> {
sync_side_effects();
async {}
}
fn do_something_to_future(future: &mut impl Future<Output = ()>) {}
fn main() {
let _ = some_async_fn();
let _ = custom();
let mut future = some_async_fn();
do_something_to_future(&mut future);
let _ = future;
}