[Backtracing][Linux] Properly align the stacks. #66626
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We have two stacks that we set up during crash handling, both of which were potentially misaligned. This only tripped us up on Ubuntu 20.04 on aarch64 - my guess is that maybe `clone()` aligns the stack pointer on newer kernels which is why we didn't see it on 22.04. rdar://110743884
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@swift-ci Please smoke test |
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I ran the backtracing tests for this PR on my (temporary) Ubuntu 20.04-aarch64 box: |
mikeash
approved these changes
Jun 14, 2023
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We have two stacks that we set up during crash handling, both of which were potentially misaligned. This only tripped us up on Ubuntu 20.04 on aarch64 - my guess is that maybe
clone()aligns the stack pointer on newer kernels which is why we didn't see it on 22.04.rdar://110743884