clear_flg
clear_flg = 0;
if (free_ent > maxcode || (clear_flg > 0)) {
if (clear_flg) {
clear_flg = 0;
clear_flg = 1;
if (clear_flg > 0 || roffset >= size || free_ent > maxcode) {
if (clear_flg > 0) {
clear_flg = 0;
clear_flg = 1;
clear_flg = 0;