#include <fstream>
#include <iostream>
#include <typeinfo>
#include <cassert>

#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/export.hpp>


using namespace std;

class B 
{
public:
      B() : i(10) {}
   virtual ~B() {}
   template<class Archive>
   void serialize(Archive& ar, unsigned version) { ar & i; }
   
   int i;
};

class D : public B 
{
public:
   template<class Archive>
   void serialize(Archive& ar, unsigned version) 
   {
    ar & boost::serialization::base_object<B>(*this);
   }
   
};

BOOST_CLASS_EXPORT(D);

int main(int,char**)
{
  ofstream ofs("xxx");
  boost::archive::text_oarchive oa(ofs);
  D* b = new D;
  oa << b;
  ofs.close();
  
  ifstream ifs("xxx");
  boost::archive::text_iarchive ia(ifs);
  B* rb;
  ia >> rb;
  std::cout << typeid(*rb).name() << "\n";    
  assert(dynamic_cast<D*>(rb));
  

  return 0;
}