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416331ca | 1 | // build-pass (FIXME(62277): could be check-pass?) |
8faf50e0 XL |
2 | |
3 | #![allow(dead_code, unused)] | |
8faf50e0 XL |
4 | |
5 | use std::task::Poll; | |
6 | ||
7 | struct K; | |
8 | struct E; | |
9 | ||
10 | fn as_result() -> Result<(), E> { | |
11 | // From Result | |
12 | let K = Ok::<K, E>(K)?; | |
13 | ||
14 | // From Poll<Result> | |
15 | let _: Poll<K> = Poll::Ready::<Result<K, E>>(Ok(K))?; | |
16 | ||
17 | // From Poll<Option<Result>> | |
18 | let _: Poll<Option<K>> = Poll::Ready::<Option<Result<K, E>>>(None)?; | |
19 | ||
20 | Ok(()) | |
21 | } | |
22 | ||
23 | fn as_poll_result() -> Poll<Result<(), E>> { | |
24 | // From Result | |
25 | let K = Ok::<K, E>(K)?; | |
26 | ||
27 | // From Poll<Result> | |
28 | let _: Poll<K> = Poll::Ready::<Result<K, E>>(Ok(K))?; | |
29 | ||
30 | // From Poll<Option<Result>> | |
31 | let _: Poll<Option<K>> = Poll::Ready::<Option<Result<K, E>>>(None)?; | |
32 | ||
33 | Poll::Ready(Ok(())) | |
34 | } | |
35 | ||
36 | fn as_poll_option_result() -> Poll<Option<Result<(), E>>> { | |
37 | // From Result | |
38 | let K = Ok::<K, E>(K)?; | |
39 | ||
40 | // From Poll<Result> | |
41 | let _: Poll<K> = Poll::Ready::<Result<K, E>>(Ok(K))?; | |
42 | ||
43 | // From Poll<Option<Result>> | |
44 | let _: Poll<Option<K>> = Poll::Ready::<Option<Result<K, E>>>(None)?; | |
45 | ||
46 | Poll::Ready(Some(Ok(()))) | |
47 | } | |
48 | ||
49 | fn main() { | |
50 | } |