54 lines
1 KiB
Rust
54 lines
1 KiB
Rust
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// edition:2021
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#![feature(let_else)]
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use std::rc::Rc;
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async fn foo(x: Option<bool>) {
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let Some(_) = x else {
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let r = Rc::new(());
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bar().await
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};
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}
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async fn bar() -> ! {
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panic!()
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}
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fn is_send<T: Send>(_: T) {}
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async fn foo2(x: Option<bool>) {
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let Some(_) = x else {
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bar2(Rc::new(())).await
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};
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}
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async fn bar2<T>(_: T) -> ! {
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panic!()
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}
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async fn foo3(x: Option<bool>) {
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let Some(_) = x else {
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(Rc::new(()), bar().await);
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return;
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};
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}
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async fn foo4(x: Option<bool>) {
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let Some(_) = x else {
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let r = Rc::new(());
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bar().await;
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println!("{:?}", r);
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return;
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};
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}
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fn main() {
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is_send(foo(Some(true)));
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//~^ ERROR future cannot be sent between threads safely
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is_send(foo2(Some(true)));
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//~^ ERROR future cannot be sent between threads safely
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is_send(foo3(Some(true)));
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//~^ ERROR future cannot be sent between threads safely
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is_send(foo4(Some(true)));
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//~^ ERROR future cannot be sent between threads safely
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}
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