blob: d6404b30e74f1bffc4b0ec450ee3271ee2f978e6 (
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
|
error[E0277]: the type `&mut Context<'_>` may not be safely transferred across an unwind boundary
--> $DIR/async-is-unwindsafe.rs:12:19
|
LL | is_unwindsafe(async {
| ___________________^
LL | |
LL | | use std::ptr::null;
LL | | use std::task::{Context, RawWaker, RawWakerVTable, Waker};
... |
LL | | drop(cx_ref);
LL | | });
| | ^
| | |
| |_____`&mut Context<'_>` may not be safely transferred across an unwind boundary
| within this `[async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6]`
|
= help: within `[async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6]`, the trait `UnwindSafe` is not implemented for `&mut Context<'_>`
= note: `UnwindSafe` is implemented for `&std::task::Context<'_>`, but not for `&mut std::task::Context<'_>`
note: future does not implement `UnwindSafe` as this value is used across an await
--> $DIR/async-is-unwindsafe.rs:25:17
|
LL | let cx_ref = &mut cx;
| ------ has type `&mut Context<'_>` which does not implement `UnwindSafe`
LL |
LL | async {}.await; // this needs an inner await point
| ^^^^^^ await occurs here, with `cx_ref` maybe used later
...
LL | });
| - `cx_ref` is later dropped here
note: required by a bound in `is_unwindsafe`
--> $DIR/async-is-unwindsafe.rs:3:26
|
LL | fn is_unwindsafe(_: impl std::panic::UnwindSafe) {}
| ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_unwindsafe`
error: aborting due to previous error
For more information about this error, try `rustc --explain E0277`.
|
