diff options
Diffstat (limited to 'src/test/ui/async-await/async-await-let-else.rs')
-rw-r--r-- | src/test/ui/async-await/async-await-let-else.rs | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/src/test/ui/async-await/async-await-let-else.rs b/src/test/ui/async-await/async-await-let-else.rs new file mode 100644 index 000000000..7ea07ae9a --- /dev/null +++ b/src/test/ui/async-await/async-await-let-else.rs @@ -0,0 +1,53 @@ +// edition:2021 +#![feature(let_else)] +use std::rc::Rc; + +async fn foo(x: Option<bool>) { + let Some(_) = x else { + let r = Rc::new(()); + bar().await + }; +} + +async fn bar() -> ! { + panic!() +} + +fn is_send<T: Send>(_: T) {} + +async fn foo2(x: Option<bool>) { + let Some(_) = x else { + bar2(Rc::new(())).await + }; +} + +async fn bar2<T>(_: T) -> ! { + panic!() +} + +async fn foo3(x: Option<bool>) { + let Some(_) = x else { + (Rc::new(()), bar().await); + return; + }; +} + +async fn foo4(x: Option<bool>) { + let Some(_) = x else { + let r = Rc::new(()); + bar().await; + println!("{:?}", r); + return; + }; +} + +fn main() { + is_send(foo(Some(true))); + //~^ ERROR future cannot be sent between threads safely + is_send(foo2(Some(true))); + //~^ ERROR future cannot be sent between threads safely + is_send(foo3(Some(true))); + //~^ ERROR future cannot be sent between threads safely + is_send(foo4(Some(true))); + //~^ ERROR future cannot be sent between threads safely +} |