File: 134335.rs

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//@ known-bug: #134335
//@compile-flags: -Zunstable-options --edition=2024 --crate-type=lib
pub async fn async_closure(x: &mut i32) {
    let c = async move || {
        *x += 1;
    };
    call_once(c).await;
}

fn call_once<T>(f: impl FnOnce() -> T) -> T {
    f()
}