wp-includes/sodium_compat/lib/sodium_compat.php:952$strstringvoid function memzero( #[\SensitiveParameter] &$str ) { ParagonIE_Sodium_Compat::memzero($str); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/sodium_compat/lib/sodium_compat.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.