X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/153846bd56973cd7cd434fc0a5cf24f3508410ba..d2958d5c9a0fdca7d0fa344382c13cbcfc581597:/src/smpi/mpi/smpi_datatype.cpp?ds=sidebyside

diff --git a/src/smpi/mpi/smpi_datatype.cpp b/src/smpi/mpi/smpi_datatype.cpp
index 561499f0b1..22a28a3759 100644
--- a/src/smpi/mpi/smpi_datatype.cpp
+++ b/src/smpi/mpi/smpi_datatype.cpp
@@ -136,9 +136,10 @@ Datatype::Datatype(const char* name, int ident, int size, MPI_Aint lb, MPI_Aint
 }
 
 Datatype::Datatype(Datatype* datatype, int* ret)
-    : size_(datatype->size_), lb_(datatype->lb_), ub_(datatype->ub_), flags_(datatype->flags_)
+    : size_(datatype->size_), lb_(datatype->lb_), ub_(datatype->ub_), flags_(datatype->flags_), duplicated_datatype_(datatype)
 {
   this->add_f();
+  datatype->ref();
   *ret = this->copy_attrs(datatype);
 }
 
@@ -150,6 +151,8 @@ Datatype::~Datatype()
     return;
   //prevent further usage
   flags_ &= ~ DT_FLAG_COMMITED;
+  if(duplicated_datatype_ != MPI_DATATYPE_NULL)
+    unref(duplicated_datatype_);
   F2C::free_f(this->f2c_id());
   //if still used, mark for deletion
   if(refcount_!=0){