old_end          2607 ext/standard/string.c 	char *old_end;
old_end          2616 ext/standard/string.c 	old_end = old + old_len;
old_end          2618 ext/standard/string.c 	if (old == old_end) {
old_end          2624 ext/standard/string.c 	for (p = old, q = str; p != old_end; p++) {