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std.debug.print swallows error.Canceled #35657

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opened 2026年06月07日 12:11:32 +02:00 by lukasl · 3 comments
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When the current task is interrupted during std.debug.print, the cancellation is forever lost and the task becomes uncancelable.

The code should be updated to enable cancel protection while printing. This is already correctly done in std.log.defaultLog.

When the current task is interrupted during `std.debug.print`, the cancellation is forever lost and the task becomes uncancelable. The code should be updated to enable cancel protection while printing. This is already correctly done in `std.log.defaultLog`.
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i can't open PR, getting 500 from codeberg, the fix is here:

https://codeberg.org/ziglang/zig/compare/master...lukasl:fix-canceled-swallow-in-std-debug

The alternative is to change std.debug.lockStderr to hold the cancel protection for the entire duration, but then we need to add prev to the returned struct.

i can't open PR, getting 500 from codeberg, the fix is here: https://codeberg.org/ziglang/zig/compare/master...lukasl:fix-canceled-swallow-in-std-debug The alternative is to change `std.debug.lockStderr` to hold the cancel protection for the entire duration, but then we need to add `prev` to the returned struct.

i feel that go-like contextes would be nice to have for situations like this

i feel that go-like contextes would be nice to have for situations like this
andrewrk added this to the 0.17.0 milestone 2026年06月11日 06:03:44 +02:00

041ae87b98

https://codeberg.org/ziglang/zig/commit/041ae87b987fbb1a1c8b286e09123965073ccc0a
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