mirror of
https://github.com/rust-lang/rust.git
synced 2025-10-31 04:57:19 +00:00
51 lines
1.0 KiB
Rust
51 lines
1.0 KiB
Rust
// build-pass (FIXME(62277): could be check-pass?)
|
|
|
|
#![allow(dead_code, unused)]
|
|
|
|
use std::task::Poll;
|
|
|
|
struct K;
|
|
struct E;
|
|
|
|
fn as_result() -> Result<(), E> {
|
|
// From Result
|
|
let K = Ok::<K, E>(K)?;
|
|
|
|
// From Poll<Result>
|
|
let _: Poll<K> = Poll::Ready::<Result<K, E>>(Ok(K))?;
|
|
|
|
// From Poll<Option<Result>>
|
|
let _: Poll<Option<K>> = Poll::Ready::<Option<Result<K, E>>>(None)?;
|
|
|
|
Ok(())
|
|
}
|
|
|
|
fn as_poll_result() -> Poll<Result<(), E>> {
|
|
// From Result
|
|
let K = Ok::<K, E>(K)?;
|
|
|
|
// From Poll<Result>
|
|
let _: Poll<K> = Poll::Ready::<Result<K, E>>(Ok(K))?;
|
|
|
|
// From Poll<Option<Result>>
|
|
let _: Poll<Option<K>> = Poll::Ready::<Option<Result<K, E>>>(None)?;
|
|
|
|
Poll::Ready(Ok(()))
|
|
}
|
|
|
|
fn as_poll_option_result() -> Poll<Option<Result<(), E>>> {
|
|
// From Result
|
|
let K = Ok::<K, E>(K)?;
|
|
|
|
// From Poll<Result>
|
|
let _: Poll<K> = Poll::Ready::<Result<K, E>>(Ok(K))?;
|
|
|
|
// From Poll<Option<Result>>
|
|
let _: Poll<Option<K>> = Poll::Ready::<Option<Result<K, E>>>(None)?;
|
|
|
|
Poll::Ready(Some(Ok(())))
|
|
}
|
|
|
|
fn main() {
|
|
}
|