xfs_bmbt_ptr_t
(sizeof (xfs_bmbt_key_t) + sizeof (xfs_bmbt_ptr_t));
xfs.ptr0 = *(xfs_bmbt_ptr_t *)
xfs_bmbt_ptr_t ptr0;
sizeof(xfs_bmbt_ptr_t), (char *)&ptr0);
(sizeof (xfs_bmbt_key_t) + sizeof (xfs_bmbt_ptr_t)))
xfs_bmbt_ptr_t ptr0;