} while ( $end - 2 < $length && $s[$end - 2] === '\\' );
// Correction (1): Undo speculative add, keep only one (end of regexp)
$end--;
+ if ( $end > $length ) {
+ // Correction (2): Loop wrongly assumed "]" was seen
+ // String ended without ending char class or regexp. Correct $end.
+ // TODO: This is invalid and should throw.
+ $end--;
+ break;
+ }
}
// Search past the regexp modifiers (gi)
while ( $end < $length && ctype_alpha( $s[$end] ) ) {