PT_NONE
ta->map[i].type = PT_NONE;
th->th_ta->map[th->th_tid].type == PT_NONE)
if (id < 0 || id >= (long)ta->map_len || ta->map[id].type == PT_NONE)
ta->map[id].type = PT_NONE;
ta->map[id].type = PT_NONE;
ta->map[id].type = PT_NONE;
if (ta->map[i].type == PT_NONE) {