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// edition: 2021
// check-pass
#![feature(return_type_notation)]
//~^ WARN the feature `return_type_notation` is incomplete
#![feature(async_fn_in_trait)]
trait HealthCheck {
async fn check(&mut self) -> bool;
}
async fn do_health_check_par<HC>(hc: HC)
where
HC: HealthCheck<check(): Send> + Send + 'static,
{
spawn(async move {
let mut hc = hc;
if !hc.check().await {
log_health_check_failure().await;
}
});
}
async fn log_health_check_failure() {}
fn main() {}
// Fake tokio spawn
use std::future::Future;
use std::pin::Pin;
use std::task::{Context, Poll};
fn spawn<F>(future: F) -> JoinHandle
where
F: Future + Send + 'static,
F::Output: Send + 'static,
{
loop {}
}
struct JoinHandle;
impl Future for JoinHandle {
type Output = ();
fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
loop {}
}
}
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