old_num          1807 ext/mbstring/oniguruma/regcomp.c   int i, pos, n, old_num;
old_num          1814 ext/mbstring/oniguruma/regcomp.c   old_num = bn->back_num;
old_num          1820 ext/mbstring/oniguruma/regcomp.c   for (i = 0, pos = 0; i < old_num; i++) {