[ODEC] Bug fix for empty matrix parts - thanks Antoine G.!

diff --git a/src/ParaMEDMEM/OverlapMapping.cxx b/src/ParaMEDMEM/OverlapMapping.cxx
index b19d1706e1c1f9b8c1bc553918e05b705103ba60..051ad304319e099be64f82953c17b18633d0ffd9 100644 (file)
--- a/src/ParaMEDMEM/OverlapMapping.cxx
+++ b/src/ParaMEDMEM/OverlapMapping.cxx
@@ -311,7 +311,7 @@ void OverlapMapping::serializeMatrixStep0ST(const mcIdType *nbOfElemsSrc, mcIdTy
   int myProcId=_group.myRank();
   for(std::size_t i=0;i<_matrixes_st.size();i++)
     {
-      if(_source_proc_id_st[i]==myProcId)// && _target_proc_id_st[i]!=myProcId
+      if(_source_proc_id_st[i]==myProcId && _matrixes_st[i].size())// && _target_proc_id_st[i]!=myProcId
         {
           count[_target_proc_id_st[i]]=(int)_matrixes_st[i].size()+1;
           szz+=_matrixes_st[i].size()+1;
@@ -323,7 +323,7 @@ void OverlapMapping::serializeMatrixStep0ST(const mcIdType *nbOfElemsSrc, mcIdTy
     offsets[i]=offsets[i-1]+count[i-1];
   for(std::size_t i=0;i<_matrixes_st.size();i++)
     {
-      if(_source_proc_id_st[i]==myProcId)
+      if(_source_proc_id_st[i]==myProcId && _matrixes_st[i].size())
         {
           mcIdType start=offsets[_target_proc_id_st[i]];
           mcIdType *work=bigArr+start;
@@ -374,7 +374,7 @@ mcIdType OverlapMapping::serializeMatrixStep1ST(const mcIdType *nbOfElemsSrc, co
   std::size_t fullLgth=0;
   for(std::size_t i=0;i<_matrixes_st.size();i++)
     {
-      if(_source_proc_id_st[i]==myProcId)
+      if(_source_proc_id_st[i]==myProcId && _matrixes_st[i].size())
         {
           const std::vector< SparseDoubleVec >& mat=_matrixes_st[i];
           mcIdType lgthToSend=0;
@@ -393,7 +393,7 @@ mcIdType OverlapMapping::serializeMatrixStep1ST(const mcIdType *nbOfElemsSrc, co
   fullLgth=0;
   for(std::size_t i=0;i<_matrixes_st.size();i++)
     {
-      if(_source_proc_id_st[i]==myProcId)
+      if(_source_proc_id_st[i]==myProcId && _matrixes_st[i].size())
         {
           const std::vector< SparseDoubleVec >& mat=_matrixes_st[i];
           for(std::vector< SparseDoubleVec >::const_iterator it1=mat.begin();it1!=mat.end();it1++)