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