wp-includes/rss.php:391$errormsg$lvloptionalE_USER_WARNING function error( $errormsg, $lvl = E_USER_WARNING ) { if ( MAGPIE_DEBUG ) { wp_trigger_error('', $errormsg, $lvl); } else { error_log( $errormsg, 0); } }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/rss.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.