wp-includes/sodium_compat/src/PHP52/SplFixedArray.php:76int #[\ReturnTypeWillChange] public function getSize() { return $this->size; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/sodium_compat/src/PHP52/SplFixedArray.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.