Neal Becker wrote:
I noticed that if I use both BOOST_CLASS_EXPORT and register_type it causes an error. Here is an example: snip ...
template<class Archive> void save (Archive & ar, const unsigned int version) const { ar.register_type (static_cast<derived*>(NULL)); //comment/uncomment this line std::cout << b->min << ' ' << b->max << '\n'; ar << BOOST_SERIALIZATION_NVP(b); }
template<class Archive> void load (Archive & ar, const unsigned int version) { ar.register_type (static_cast<derived*>(NULL)); //add this line base* b = NULL; ar >> BOOST_SERIALIZATION_NVP(b); std::cout << b->min << ' ' << b->max << '\n'; }
BOOST_SERIALIZATION_SPLIT_MEMBER() };
If ar.register_type is there, you get unregistered exception.
registration must occur symetrically in both save and load. an easier way to guarentee this would be to use: template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar.register_type (static_cast<derived*>(NULL)); ar & BOOST_SERIALIZATION_NVP(b); std::cout << b->min << ' ' << b->max << '\n'; } Robert Ramey