if (comm == MPI_COMM_NULL) {
retval = MPI_ERR_COMM;
+ } else if (!is_datatype_valid(datatype)) {
+ retval = MPI_ERR_ARG;
} else {
#ifdef HAVE_TRACING
int rank = comm != MPI_COMM_NULL ? smpi_process_index() : -1;
if (comm == MPI_COMM_NULL) {
retval = MPI_ERR_COMM;
- } else if (((smpi_comm_rank(comm)==root) && (sendtype == MPI_DATATYPE_NULL))
- || ((recvbuf !=MPI_IN_PLACE) && (recvtype == MPI_DATATYPE_NULL))) {
+ } else if (((smpi_comm_rank(comm)==root) && (!is_datatype_valid(sendtype)))
+ || ((recvbuf !=MPI_IN_PLACE) && (!is_datatype_valid(recvtype)))){
retval = MPI_ERR_TYPE;
} else if ((sendbuf == recvbuf) ||
((smpi_comm_rank(comm)==root) && sendcount>0 && (sendbuf == NULL))){