Memory Safety: Low
alsa_id_decode() uses strcpy() to copy into a caller-provided buffer
without knowing its size. Although all current callers allocate the
buffer correctly (via alloca(strlen(src) + 1) or with a pre-validated
fixed buffer), the function signature does not encode this requirement.
Replace strcpy with memcpy using the known source length to make the
bounded copy explicit.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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