Inspired by another conversation on the list I started
thinking about what could be done with the C++ interface.
So reading the C++ header files of lam-mpi I find that there
is in fact no virtual dtor defined for MPI::Intercomm; it is
commented out. To my knowledege this means that deleting a
class derived from MPI::Intercomm through a pointer to
e.g. Comm will result in undefined behaviour. Am I missing
something here, or?
// From mpi2cxx/comm.h
//
class Comm_Null {
public:
// construction
inline Comm_Null() : mpi_comm(MPI_COMM_NULL) { }
// copy
inline Comm_Null(const Comm_Null& data) : mpi_comm(data.mpi_comm) { }
// inter-language operability
inline Comm_Null(const MPI_Comm& data) : mpi_comm(data) { }
// destruction
//JGS virtual inline ~Comm_Null() { }
//
// [ ... ]
//
};
class Comm : public Comm_Null {
public:
//
// [ ... ]
//
// construction
Comm() { }
// copy
Comm(const Comm_Null& data) : Comm_Null(data) { }
//
// [ ... ]
//
};
// From: mpi2cxx/intercomm.h
//
class Intercomm : public Comm {
public:
// construction
Intercomm() : Comm(MPI_COMM_NULL) { }
// copy
Intercomm(const Comm_Null& data) : Comm(data) { }
// inter-language operability
Intercomm(const MPI_Comm& data) : Comm(data) { }
//
// No dtor ~Intercomm() defined!?
//
//
// [ ... ]
//
};
--
F.
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