284437d434
``` 3 | X0 Y0 Z0 | _____^ - - | | _______| | | || _________| 4 | ||| X1 Y1 Z1 5 | ||| X2 Y2 Z2 | |||____^__-__- `Z` label | ||_____|__| | |______| `Y` is a good letter too | `X` is a good letter ```
35 lines
1.6 KiB
Text
35 lines
1.6 KiB
Text
error[E0277]: the type `&mut Context<'_>` may not be safely transferred across an unwind boundary
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--> $DIR/async-is-unwindsafe.rs:12:5
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LL | is_unwindsafe(async {
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| ______^ -
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| | ___________________|
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LL | ||
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LL | || use std::ptr::null;
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LL | || use std::task::{Context, RawWaker, RawWakerVTable, Waker};
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... ||
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LL | || drop(cx_ref);
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LL | || });
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| ||_____-^ `&mut Context<'_>` may not be safely transferred across an unwind boundary
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| |_____|
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| within this `{async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6}`
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= help: within `{async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6}`, the trait `UnwindSafe` is not implemented for `&mut Context<'_>`, which is required by `{async block@$DIR/async-is-unwindsafe.rs:12:19: 29:6}: UnwindSafe`
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= note: `UnwindSafe` is implemented for `&Context<'_>`, but not for `&mut Context<'_>`
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note: future does not implement `UnwindSafe` as this value is used across an await
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--> $DIR/async-is-unwindsafe.rs:25:18
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LL | let cx_ref = &mut cx;
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| ------ has type `&mut Context<'_>` which does not implement `UnwindSafe`
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LL |
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LL | async {}.await; // this needs an inner await point
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| ^^^^^ await occurs here, with `cx_ref` maybe used later
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note: required by a bound in `is_unwindsafe`
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--> $DIR/async-is-unwindsafe.rs:3:26
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LL | fn is_unwindsafe(_: impl std::panic::UnwindSafe) {}
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| ^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `is_unwindsafe`
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error: aborting due to 1 previous error
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For more information about this error, try `rustc --explain E0277`.
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