Hi I got a access violation on 0x00000000 with the class DDD but I cannot figure out what's wrong When the symbol NO_EXCEPTION is defined, the member acccode is set to an instance of ACCCODE and the serialization is working fine. But when this symbol is undefined, one gets the exception. I am suspecting the input serialization to bypass the loading of the member FIELD* field (which is following the "acccode" member) which leads to an exception when the next member DISP* disp is loaded but I have no way to check it out any idea?? Francis Source code below and also joined in annex ---------------------------------------------------------------------- #include <iostream> #include <fstream> #include <boost/archive/text_iarchive.hpp> #include <boost/archive/text_oarchive.hpp> using namespace std; class FIELD : public string { private: friend class boost::serialization::access; friend std::ostream & operator<<(std::ostream &os, const FIELD&); template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & boost::serialization::base_object<string>(*this); ar & member; } private: string member; FIELD(){} public: FIELD(const string& name): string(name){} }; class DDD { private: friend class boost::serialization::access; friend std::ostream & operator<<(std::ostream &os, const DDD& dd); template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & acccode; ar & field; ar & disp; } public: DDD(): acccode(0), disp(0), field(0) {} class ACCCODE { private: friend class boost::serialization::access; friend std::ostream & operator<<( std::ostream &os, const ACCCODE& ); template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & acccode; } public: string acccode; ACCCODE(){} ACCCODE(const string& s) : acccode(s) {} }; class DISP { private: friend class boost::serialization::access; friend std::ostream & operator<<( std::ostream &os, const DISP& ); template<class Archive> void serialize(Archive &ar, const unsigned int version) { ar & disp; } public: string disp; DISP(){} DISP(const string& s) : disp(s) {} }; public: ACCCODE* acccode; FIELD* field; DISP* disp; }; int main(int argc, char* argv[]) { DDD ddd; #ifdef NO_EXCEPTION ddd.acccode = new DDD::ACCCODE("a"); #endif ddd.field = new FIELD("BAR"); ddd.disp = new DDD::DISP(); const char* file = "TEST.txt"; { std::ofstream os(file); boost::archive::text_oarchive oa(os); oa << ddd; } { std::ifstream is(file); boost::archive::text_iarchive ia(is); ia >> ddd; } } ---------------------------------------------------------------------------- -- A good friend will come bail you out of jail.......... but, a true friend....will be sitting next to you saying: "...that was fun." begin 666 test_serialization.cpp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