[Backtracing][Linux] Fix Ubuntu 20.04-aarch64 CI failures. #66567
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These seem to be related to signal handling issues in threads that have been started presumably by the C library or some other library. Primarily this appears to affect Ubuntu 20.04 on aarch64, though I have seen sporadic issues on 18.04 as well. We address the problem by making the thread suspension mechanism more robust in the face of threads with masked signals. rdar://110653167
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@swift-ci Please smoke test |
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@swift-ci Please smoke test |
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(Failure was Serialization/macros, which isn't anything to do with this.) |
mikeash
approved these changes
Jun 13, 2023
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These seem to be related to signal handling issues in threads that have been started presumably by the C library or some other library.
Primarily this appears to affect Ubuntu 20.04 on aarch64, though I have seen sporadic issues on 18.04 as well.
We address the problem by making the thread suspension mechanism more robust in the face of threads with masked signals.
rdar://110653167