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enforce a scatter error in some cases
[simgrid.git]
/
src
/
smpi
/
smpi_pmpi.c
diff --git
a/src/smpi/smpi_pmpi.c
b/src/smpi/smpi_pmpi.c
index
4d8e218
..
d0d8b4b
100644
(file)
--- a/
src/smpi/smpi_pmpi.c
+++ b/
src/smpi/smpi_pmpi.c
@@
-1959,7
+1959,10
@@
int PMPI_Scatter(void *sendbuf, int sendcount, MPI_Datatype sendtype,
} else if (((smpi_comm_rank(comm)==root) && (sendtype == MPI_DATATYPE_NULL))
|| ((recvbuf !=MPI_IN_PLACE) && (recvtype == MPI_DATATYPE_NULL))) {
retval = MPI_ERR_TYPE;
} else if (((smpi_comm_rank(comm)==root) && (sendtype == MPI_DATATYPE_NULL))
|| ((recvbuf !=MPI_IN_PLACE) && (recvtype == MPI_DATATYPE_NULL))) {
retval = MPI_ERR_TYPE;
- } else {
+ } else if ((sendbuf == recvbuf) ||
+ ((smpi_comm_rank(comm)==root) && sendcount>0 && (sendbuf == NULL))){
+ retval = MPI_ERR_BUFFER;
+ }else {
if (recvbuf == MPI_IN_PLACE) {
recvtype=sendtype;
if (recvbuf == MPI_IN_PLACE) {
recvtype=sendtype;