Hello all, I'm currently trying to make a library serializable and would like to be as non-intrusive as possible. Unfortunately this library (ODE) uses its own forms of linked lists to manage its objects and the links include a "pointer-to-pointer-to-type" (type**). How do I go about serializing these? Why doesn't this compile? #include <fstream> #include <boost/archive/text_oarchive.hpp> struct mystruct { int i; }; template<class Archive> void serialize(Archive& ar, mystruct& ms, const unsigned int version) { ar & ms.i; } BOOST_CLASS_TRACKING(mystruct, boost::serialization::track_always) int main( int argc, char* argv[], char* envp[] ) { std::ofstream ofilestream("filename.txt"); boost::archive::text_oarchive oarchive(ofilestream); mystruct a; mystruct* pa = &a; mystruct** ppa = &pa; oarchive << ppa; }