Here is the full source code. Any suggestion? Thank you very much!

Try the change below: Robert Ramey

#include <iostream> #include <sstream> #include <fstream>

using namespace std;

#include #include

class dd { private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & i; }

int i; };

class dummy { public: dummy() : d(0){} ~dummy(){}

private: friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) {

//*** replace this:

//ar & const_cast

(d);

//*** with this //ar & const_cast