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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:11:38 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:13:23 +0000 |
commit | 20431706a863f92cb37dc512fef6e48d192aaf2c (patch) | |
tree | 2867f13f5fd5437ba628c67d7f87309ccadcd286 /src/test/ui/async-await/issue-98634.rs | |
parent | Releasing progress-linux version 1.65.0+dfsg1-2~progress7.99u1. (diff) | |
download | rustc-20431706a863f92cb37dc512fef6e48d192aaf2c.tar.xz rustc-20431706a863f92cb37dc512fef6e48d192aaf2c.zip |
Merging upstream version 1.66.0+dfsg1.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/async-await/issue-98634.rs')
-rw-r--r-- | src/test/ui/async-await/issue-98634.rs | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/test/ui/async-await/issue-98634.rs b/src/test/ui/async-await/issue-98634.rs new file mode 100644 index 000000000..b0d38687f --- /dev/null +++ b/src/test/ui/async-await/issue-98634.rs @@ -0,0 +1,50 @@ +// edition: 2021 + +use std::{ + future::Future, + pin::Pin, + task::{Context, Poll, Waker}, +}; + +pub struct StructAsync<F: Fn() -> Pin<Box<dyn Future<Output = ()>>>> { + pub callback: F, +} + +impl<F> Future for StructAsync<F> +where + F: Fn() -> Pin<Box<dyn Future<Output = ()>>>, +{ + type Output = (); + + fn poll(self: Pin<&mut Self>, _cx: &mut Context<'_>) -> Poll<Self::Output> { + Poll::Pending + } +} + +async fn callback() {} + +struct Runtime; + +fn waker() -> &'static Waker { + todo!() +} + +impl Runtime { + #[track_caller] + pub fn block_on<F: Future>(&self, mut future: F) -> F::Output { + loop { + unsafe { + Pin::new_unchecked(&mut future).poll(&mut Context::from_waker(waker())); + } + } + } +} + +fn main() { + Runtime.block_on(async { + StructAsync { callback }.await; + //~^ ERROR expected `fn() -> impl Future<Output = ()> {callback}` to be a fn item that returns `Pin<Box<(dyn Future<Output = ()> + 'static)>>`, but it returns `impl Future<Output = ()>` + //~| ERROR expected `fn() -> impl Future<Output = ()> {callback}` to be a fn item that returns `Pin<Box<(dyn Future<Output = ()> + 'static)>>`, but it returns `impl Future<Output = ()>` + //~| ERROR expected `fn() -> impl Future<Output = ()> {callback}` to be a fn item that returns `Pin<Box<(dyn Future<Output = ()> + 'static)>>`, but it returns `impl Future<Output = ()>` + }); +} |