25 lines
913 B
Rust
25 lines
913 B
Rust
//! FIXME: This test should pass! However, `async fn` does not yet use `UnsafePinned`.
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//! This is a regression test for <https://github.com/rust-lang/rust/issues/137750>:
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//! `UnsafePinned` must include the effects of `UnsafeCell`.
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//@revisions: stack tree
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//@[tree]compile-flags: -Zmiri-tree-borrows
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//@normalize-stderr-test: "\[0x[a-fx\d.]+\]" -> "[OFFSET]"
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use core::future::Future;
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use core::pin::{Pin, pin};
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use core::task::{Context, Poll, Waker};
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fn main() {
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let mut f = pin!(async move {
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let x = &mut 0u8;
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core::future::poll_fn(move |_| {
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*x = 1; //~ERROR: write access
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Poll::<()>::Pending
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})
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.await
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});
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let mut cx = Context::from_waker(&Waker::noop());
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assert_eq!(f.as_mut().poll(&mut cx), Poll::Pending);
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let _: Pin<&_> = f.as_ref(); // Or: `f.as_mut().into_ref()`.
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assert_eq!(f.as_mut().poll(&mut cx), Poll::Pending);
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}
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