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//@ edition:2021
#![feature(negative_impls)]
#![allow(unused)]
fn main() {
gimme_send(foo());
//~^ ERROR cannot be sent between threads safely
//~| NOTE cannot be sent
//~| NOTE bound introduced by
//~| NOTE appears within the type
}
fn gimme_send<T: Send>(t: T) {
//~^ NOTE required by this bound
//~| NOTE required by a bound
drop(t);
}
struct NotSend {}
impl Drop for NotSend {
fn drop(&mut self) {}
}
impl !Send for NotSend {}
async fn foo() {
//~^ NOTE used within this `async` fn body
//~| NOTE within this `impl Future
let mut x = (NotSend {},);
drop(x.0);
x.0 = NotSend {};
bar().await;
}
async fn bar() {}
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