42 lines
902 B
Rust
42 lines
902 B
Rust
// Regression test for <https://github.com/rust-lang/rust/issues/73137>
|
|
|
|
// run-pass
|
|
// edition:2018
|
|
|
|
#![allow(dead_code)]
|
|
use std::future::Future;
|
|
use std::task::{Waker, Wake, Context};
|
|
use std::sync::Arc;
|
|
|
|
struct DummyWaker;
|
|
impl Wake for DummyWaker {
|
|
fn wake(self: Arc<Self>) {}
|
|
}
|
|
|
|
struct Foo {
|
|
a: usize,
|
|
b: &'static u32,
|
|
}
|
|
|
|
#[inline(never)]
|
|
fn nop<T>(_: T) {}
|
|
|
|
fn main() {
|
|
let mut fut = Box::pin(async {
|
|
let action = Foo {
|
|
b: &42,
|
|
a: async { 0 }.await,
|
|
};
|
|
|
|
// An error in the coroutine transform caused `b` to be overwritten with `a` when `b` was
|
|
// borrowed.
|
|
nop(&action.b);
|
|
assert_ne!(0usize, unsafe { std::mem::transmute(action.b) });
|
|
|
|
async {}.await;
|
|
});
|
|
let waker = Waker::from(Arc::new(DummyWaker));
|
|
let mut cx = Context::from_waker(&waker);
|
|
let _ = fut.as_mut().poll(&mut cx);
|
|
}
|