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