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asan: Use memset_early() to fill shadow memory
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Authored by markj on Feb 3 2026, 2:46 PM.
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Details

Summary

__builtin_memset() calls are replaced with calls to memcpy(), but this
can't be used before ifunc relocations are processed. Just
unconditionally use memset_early() to work around this.

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rG FreeBSD src repository
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