24 lines
449 B
Rust
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
|
|
}
|