class Comm : public F2C, public Keyval{
friend Topo;
- MPI_Group group_;
+ MPI_Group group_ = MPI_GROUP_NULL;
SMPI_Topo_type topoType_ = MPI_INVALID_TOPO;
std::shared_ptr<Topo> topo_; // to be replaced by an union
int refcount_ = 1;
std::list<MPI_Win> rma_wins_; // attached windows for synchronization.
std::string name_;
MPI_Info info_ = MPI_INFO_NULL;
- int id_;
+ int id_ = MPI_UNDEFINED;
MPI_Errhandler errhandler_ = _smpi_cfg_default_errhandler_is_error ? MPI_ERRORS_ARE_FATAL : MPI_ERRORS_RETURN;;
MPI_Errhandler* errhandlers_ = nullptr; //for MPI_COMM_WORLD only