blob: 2d16f19364457cdd40775c64e2415376e4249559 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
// 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);
}
|
