int ret = MPI_SUCCESS;
if(elem->delete_fn.comm_delete_fn!=MPI_NULL_DELETE_FN)
ret = elem->delete_fn.comm_delete_fn(obj, keyval, value, elem->extra_state);
int ret = MPI_SUCCESS;
if(elem->delete_fn.comm_delete_fn!=MPI_NULL_DELETE_FN)
ret = elem->delete_fn.comm_delete_fn(obj, keyval, value, elem->extra_state);