zeroize: add zeroize_stack function
#1331
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Here you can see the function in action: https://rust.godbolt.org/z/Yd9hce7Yq |
tarcieri
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Jan 7, 2026
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Adds a simple
optimization_barrier-based function for stack zeroization. It requires an explicitly provided size since erasing the whole stack (2-8 MiB) can be expensive and it would be an overkill in most cases. Additionally, detection of remaining stack size (e.g. usingpthread_attr_getstack) is platform-dependent and not available on all targets.Closes #810