1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
|
//@ check-pass
//@ edition: 2021
#![feature(lint_reasons)]
use std::future::Future;
use std::pin::Pin;
use std::task::Poll;
pub trait MyTrait {
#[allow(async_fn_in_trait)]
async fn foo(&self) -> i32;
}
#[derive(Clone)]
struct MyFuture(i32);
impl Future for MyFuture {
type Output = i32;
fn poll(
self: Pin<&mut Self>,
_: &mut std::task::Context<'_>,
) -> Poll<<Self as Future>::Output> {
Poll::Ready(self.0)
}
}
impl MyTrait for i32 {
#[expect(refining_impl_trait)]
fn foo(&self) -> impl Future<Output = i32> + Clone {
MyFuture(*self)
}
}
fn main() {}
|
