51 lines
1.1 KiB
Rust
51 lines
1.1 KiB
Rust
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// edition:2018
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// revisions: rpass1
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// Regression test for #86753. The `type_implements_trait` query (since moved to a method)
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// was encountering an ICE during incremental testing when hashing its arguments.
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#![warn(rust_2021_compatibility)]
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use std::future::Future;
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use std::pin::Pin;
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use std::task::{Poll, Context};
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struct LocalSet {}
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struct RunUntil<'a, F> {
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_local_set: &'a LocalSet,
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_future: F,
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}
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impl<'a, F> RunUntil<'a, F> {
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fn project<'pin>(self: Pin<&'pin mut Self>) -> Projection<'pin, 'a, F> {
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unimplemented!()
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}
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}
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struct Projection<'pin, 'a, F>
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where
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RunUntil<'a, F>: 'pin,
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{
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pub local_set: &'pin mut &'a LocalSet,
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pub future: Pin<&'pin mut F>,
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}
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impl LocalSet {
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fn with<T>(&self, _f: impl FnOnce() -> T) -> T {
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unimplemented!()
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}
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}
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impl<T: Future> Future for RunUntil<'_, T> {
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type Output = T::Output;
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fn poll(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Self::Output> {
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let me = self.project();
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me.local_set.with(|| {
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let _ = cx.waker();
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let f = me.future;
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let _ = f.poll(cx);
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Poll::Pending
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})
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}
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}
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fn main() {}
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