blob: e1dcfefebcd762187aba9a1d49a0b44154696787 (
plain)
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
|
`async fn`/`impl trait` return type cannot contain a projection
or `Self` that references lifetimes from a parent scope.
Erroneous code example:
```compile_fail,E0760,edition2018
struct S<'a>(&'a i32);
impl<'a> S<'a> {
async fn new(i: &'a i32) -> Self {
S(&22)
}
}
```
To fix this error we need to spell out `Self` to `S<'a>`:
```edition2018
struct S<'a>(&'a i32);
impl<'a> S<'a> {
async fn new(i: &'a i32) -> S<'a> {
S(&22)
}
}
```
This will be allowed at some point in the future,
but the implementation is not yet complete.
See the [issue-61949] for this limitation.
[issue-61949]: https://github.com/rust-lang/rust/issues/61949
|
