X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/364eee0fc6ab77fddc5437ac273527bd27711724..77bbf3027c4240a2e833209a3a3f186589da8577:/src/smpi/bindings/smpi_pmpi_type.cpp

diff --git a/src/smpi/bindings/smpi_pmpi_type.cpp b/src/smpi/bindings/smpi_pmpi_type.cpp
index ec5cc1baa7..69b7eaa86b 100644
--- a/src/smpi/bindings/smpi_pmpi_type.cpp
+++ b/src/smpi/bindings/smpi_pmpi_type.cpp
@@ -338,7 +338,7 @@ int PMPI_Pack(void* inbuf, int incount, MPI_Datatype type, void* outbuf, int out
     return MPI_ERR_TYPE;
   if(comm==MPI_COMM_NULL)
     return MPI_ERR_COMM;
-  return type->pack(inbuf, incount, outbuf,outcount,position, comm);
+  return type->pack(inbuf == MPI_BOTTOM ? nullptr : inbuf, incount, outbuf, outcount, position, comm);
 }
 
 int PMPI_Pack_size(int incount, MPI_Datatype datatype, MPI_Comm comm, int* size) {