Make pthread and other "native" synchronization objects more resilient #4672
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RalfJung
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oli-obk
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Nov 8, 2025
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Overwriting the object will destroy its magic metadata, so it needs to be re-initialized (which will fail since the bytes no longer match the static initializer). Furthermore, reading or writing the object while threads are queued is insta-UB.
Fixes #4670