rust/tests/ui/async-await/issue-64130-2-send.rs
2023-01-11 09:32:08 +00:00

24 lines
449 B
Rust

#![feature(negative_impls)]
// edition:2018
// This tests the specialized async-await-specific error when futures don't implement an
// auto trait (which is specifically Send) due to some type that was captured.
struct Foo;
impl !Send for Foo {}
fn is_send<T: Send>(t: T) { }
async fn bar() {
let x = Foo;
baz().await;
}
async fn baz() { }
fn main() {
is_send(bar());
//~^ ERROR future cannot be sent between threads safely
}