48 lines
1.1 KiB
Rust
48 lines
1.1 KiB
Rust
//@ edition: 2021
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//@ check-pass
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#![feature(async_closure)]
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fn outlives<'a>(_: impl Sized + 'a) {}
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async fn call_once(f: impl async FnOnce()) {
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f().await;
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}
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fn simple<'a>(x: &'a i32) {
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let c = async || { println!("{}", *x); };
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outlives::<'a>(c());
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outlives::<'a>(call_once(c));
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let c = async move || { println!("{}", *x); };
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outlives::<'a>(c());
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outlives::<'a>(call_once(c));
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}
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struct S<'a>(&'a i32);
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fn through_field<'a>(x: S<'a>) {
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let c = async || { println!("{}", *x.0); };
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outlives::<'a>(c());
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outlives::<'a>(call_once(c));
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let c = async move || { println!("{}", *x.0); };
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outlives::<'a>(c());
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outlives::<'a>(call_once(c));
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}
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fn through_field_and_ref<'a>(x: &S<'a>) {
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let c = async || { println!("{}", *x.0); };
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outlives::<'a>(c());
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outlives::<'a>(call_once(c));
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let c = async move || { println!("{}", *x.0); };
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outlives::<'a>(c());
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// outlives::<'a>(call_once(c));
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// The above fails b/c the by-move coroutine of `c` captures `x` in its entirety.
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// Since we have not asserted that the borrow for `&S<'a>` outlives `'a`, it'll fail.
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}
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fn main() {}
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