"RIVASSEAU Jean Noel" <JN.RIVASSEAU@oberthurcs.com> wrote in message news:87F60F7FA02FF749AFB02BD9FCAA6B04DA7ABF@naserv31.nanterre.oberthurcs.com... Hello This is my last problem with the BSL but the most important one (because there is no workaround). I am trying to serialize a class (whose name is "ClassSpecification") which has a std::vector of pointers. The code for serializing the class the pointer refer to (MemberVariableSpecification) is written and instantiated correctly. However I cannot correctly serialize the std::vector. It fails with a message complaining about: C:/Boost/include/boost-1_33_1/boost/archive/detail/iserializer.hpp:115: error: incomplete type `boost::serialization::extended_type_info_null<std::vector<MemberVariableSpecification*, std::allocator<MemberVariableSpecification*> > >' used in nested name specifier I do not understand why I need an extended_type_info for this vector. I sure need it for the class the pointers refer to (and I did specify it), but the std::vector itself is serialized as such, not as a pointer. *** hmmm - can sympathise with you here. I suspect that this is a mistake. It might be an accidental side effect of the fact that the default serialization trait for any class is tracked with class information. You might try the following: BOOST_CLASS_IMPLEMENTATION( std::vector<MemberVariableSpecification*, std::allocator<MemberVariableSpecification*>, boost::serialization::object_serializable ) Why do I get this error ??? I would have to look into it. Can you please check the attached code and help me? Thanks Jean-Noël Ps: using gcc 3.4.2 _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users