old_end          2702 ext/standard/string.c 	char *old_end;
old_end          2711 ext/standard/string.c 	old_end = ZSTR_VAL(old) + ZSTR_LEN(old);
old_end          2713 ext/standard/string.c 	if (ZSTR_VAL(old) == old_end) {
old_end          2719 ext/standard/string.c 	for (p = ZSTR_VAL(old), q = ZSTR_VAL(str); p != old_end; p++) {