mas_mt_height
mas_replace_node(mas, old_enode, mas_mt_height(mas));
unsigned char height = mas_mt_height(mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
height = mas_mt_height(&mas);
MT_BUG_ON(mt, mas_mt_height(&mas) != 2);