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Support atexit, and detect racy calls to exit as UB #3725

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RalfJung opened this issue Jul 1, 2024 · 0 comments
Open

Support atexit, and detect racy calls to exit as UB #3725

RalfJung opened this issue Jul 1, 2024 · 0 comments
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A-shims Area: This affects the external function shims C-enhancement Category: a PR with an enhancement or an issue tracking an accepted enhancement

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@RalfJung
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RalfJung commented Jul 1, 2024

See rust-lang/rust#126600, rust-lang/rust#126606. However I am not sure how to even best do that... we just atomically stop the machine on exit currently. Instead we'd have to keep other threads going for a while and see whether any of them also calls exit, and then report UB?

We also currently don't support atexit handlers, so probably the UB-inducing programs can't even be executed. So I think we're not missing UB, currently.
@RalfJung RalfJung added C-enhancement Category: a PR with an enhancement or an issue tracking an accepted enhancement A-shims Area: This affects the external function shims labels Jul 1, 2024
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