blob: f6c9fdd6d68061db99801d6f638d87ded30b115e (
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
33
34
35
36
37
38
39
40
|
//@ edition:2018
use std::future::Future;
// test the quality of annotations giving lifetimes names (`'1`) when async constructs are involved
pub async fn async_fn(x: &mut i32) -> &i32 {
let y = &*x;
*x += 1; //~ ERROR cannot assign to `*x` because it is borrowed
y
}
pub fn async_closure(x: &mut i32) -> impl Future<Output=&i32> {
(async move || {
//~^ ERROR lifetime may not live long enough
//~| ERROR temporary value dropped while borrowed
let y = &*x;
*x += 1; //~ ERROR cannot assign to `*x` because it is borrowed
y
})()
}
pub fn async_closure_explicit_return_type(x: &mut i32) -> impl Future<Output=&i32> {
(async move || -> &i32 {
//~^ ERROR lifetime may not live long enough
//~| ERROR temporary value dropped while borrowed
let y = &*x;
*x += 1; //~ ERROR cannot assign to `*x` because it is borrowed
y
})()
}
pub fn async_block(x: &mut i32) -> impl Future<Output=&i32> {
async move {
let y = &*x;
*x += 1; //~ ERROR cannot assign to `*x` because it is borrowed
y
}
}
fn main() {}
|
