+ status = MPI_Allgatherv(NULL, recv_counts[rank], MPI_INT, rb, recv_counts, recv_disps, MPI_INT, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_BUFFER)
+ printf("MPI_Allgatherv did not return MPI_ERR_BUFFER for empty sendbuf\n");
+ status = MPI_Allgatherv(sb, -1, MPI_INT, rb, recv_counts, recv_disps, MPI_INT, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_COUNT)
+ printf("MPI_Allgatherv did not return MPI_ERR_COUNT for -1 sendcount\n");
+ status = MPI_Allgatherv(sb, recv_counts[rank], MPI_DATATYPE_NULL, rb, recv_counts, recv_disps, MPI_INT, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_TYPE)
+ printf("MPI_Allgatherv did not return MPI_ERR_TYPE for MPI_DATATYPE_NULL sendtype\n");
+ status = MPI_Allgatherv(sb, recv_counts[rank], MPI_INT, NULL, recv_counts, recv_disps, MPI_INT, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_BUFFER)
+ printf("MPI_Allgatherv did not return MPI_ERR_BUFFER for empty recvbuf\n");
+ status = MPI_Allgatherv(sb, recv_counts[rank], MPI_INT, rb, NULL, recv_disps, MPI_INT, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_COUNT)
+ printf("MPI_Allgatherv did not return MPI_ERR_COUNT for NULL recvcounts\n");
+ status = MPI_Allgatherv(sb, recv_counts[rank], MPI_INT, rb, recv_counts, NULL, MPI_INT, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_ARG)
+ printf("MPI_Allgatherv did not return MPI_ERR_ARG for NULL recvdisps\n");
+ status = MPI_Allgatherv(sb, recv_counts[rank], MPI_INT, rb, recv_counts, recv_disps, MPI_DATATYPE_NULL, MPI_COMM_WORLD);
+ if(status!=MPI_ERR_TYPE)
+ printf("MPI_Allgatherv did not return MPI_ERR_TYPE for MPI_DATATYPE_NULL recvtype\n");
+ status = MPI_Allgatherv(sb, recv_counts[rank], MPI_INT, rb, recv_counts, recv_disps, MPI_INT, MPI_COMM_NULL);
+ if(status!=MPI_ERR_COMM)
+ printf("MPI_Allgatherv did not return MPI_ERR_COMM for MPI_COMM_NULL comm\n");
+