mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-18 19:43:43 +00:00
29 lines
706 B
Rust
29 lines
706 B
Rust
// This used to compile the future down to ud2, due to uninhabited types being
|
|
// handled incorrectly in generators.
|
|
// compile-flags: -Copt-level=z -Cdebuginfo=2 --edition=2018
|
|
|
|
// run-pass
|
|
// ignore-asmjs wasm2js does not support source maps yet
|
|
|
|
use std::future::Future;
|
|
use std::task::Poll;
|
|
use std::task::Context;
|
|
use std::pin::Pin;
|
|
use std::rc::Rc;
|
|
|
|
struct Never();
|
|
impl Future for Never {
|
|
type Output = ();
|
|
fn poll(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Self::Output> {
|
|
Poll::Pending
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
let fut = async {
|
|
let _rc = Rc::new(()); // Also crashes with Arc
|
|
Never().await;
|
|
};
|
|
let _bla = fut; // Moving the future is required.
|
|
}
|