mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-25 00:03:43 +00:00
30 lines
534 B
Rust
30 lines
534 B
Rust
// edition:2021
|
|
|
|
trait SendFuture: Send {
|
|
type Output;
|
|
}
|
|
|
|
impl<Fut: Send> SendFuture for Fut {
|
|
type Output = ();
|
|
}
|
|
|
|
async fn broken_fut() {
|
|
ident_error;
|
|
//~^ ERROR cannot find value `ident_error` in this scope
|
|
}
|
|
|
|
// triggers normalization of `<Fut as SendFuture>::Output`,
|
|
// which requires `Fut: Send`.
|
|
fn normalize<Fut: SendFuture>(_: Fut, _: Fut::Output) {}
|
|
|
|
async fn iceice<A, B>()
|
|
// <- async fn is necessary
|
|
where
|
|
A: Send,
|
|
B: Send, // <- a second bound
|
|
{
|
|
normalize(broken_fut(), ());
|
|
}
|
|
|
|
fn main() {}
|