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// edition:2021
// issue 108897
trait Handler {}
impl<F, Fut> Handler for F
where
Fut: Send,
F: FnOnce() -> Fut,
{}
fn require_handler<H: Handler>(h: H) {}
async fn handler() {
let a = &1 as *const i32;
async {}.await;
}
fn main() {
require_handler(handler)
//~^ ERROR future cannot be sent between threads safely
}
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