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

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

using namespace std;


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

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

int main()
{
    ofstream ofs("xxx");
    boost::archive::text_oarchive oa(ofs);
    
    B* b = new B;
    oa << b;
    ofs.close();
    
    ifstream ifs("xxx");
    boost::archive::text_iarchive ia(ifs);
    ia.template register_type<A>();
    B* rb;
    ia >> rb;
    assert(rb);
    std::cout << typeid(*rb).name() << "\n";
    
    return 0;
}