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39 lines
1.6 KiB
Plaintext
39 lines
1.6 KiB
Plaintext
error[E0277]: the type `&mut Context<'_>` may not be safely transferred across an unwind boundary
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--> $DIR/async-is-unwindsafe.rs:12:19
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LL | is_unwindsafe(async {
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| ___________________^
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LL | |
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LL | | use std::ptr::null;
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LL | | use std::task::{Context, RawWaker, RawWakerVTable, Waker};
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... |
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LL | | drop(cx_ref);
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LL | | });
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| | ^
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| | |
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| |_____`&mut Context<'_>` may not be safely transferred across an unwind boundary
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| within this `[async block@$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<'_>`
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= note: `UnwindSafe` is implemented for `&std::task::Context<'_>`, but not for `&mut std::task::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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...
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LL | });
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| - `cx_ref` is later dropped here
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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 previous error
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For more information about this error, try `rustc --explain E0277`.
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