25 lines
479 B
Rust
25 lines
479 B
Rust
//@ aux-build:block-on.rs
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//@ run-pass
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//@ check-run-results
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//@ revisions: e2021 e2018
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//@[e2018] edition:2018
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//@[e2021] edition:2021
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extern crate block_on;
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async fn call_once(f: impl AsyncFnOnce()) { f().await; }
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pub async fn async_closure(x: &mut i32) {
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let c = async move || {
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*x += 1;
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};
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call_once(c).await;
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}
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fn main() {
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block_on::block_on(async {
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let mut x = 0;
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async_closure(&mut x).await;
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assert_eq!(x, 1);
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});
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}
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