Hi all, I'm having trouble with Boost's serialization library that I'm trying to integrate with an existing class hierarchy that used MFC toolkit as the archiver. It seems that when a serializable class defines a specialized save (or load or serialize for that matter) in addition to the generic method, the serialization library gets confused and ends up not identify properly that the hierarchy of serializable classes uses multiple inheritance and in particular diamond-shaped inheritance. I've reproduced the problem using the test_diamond code example provided with Boost 1.43 using MS VC 9.0 by adding a save method specialized for archive::text_oarchive to the derived1 class defined in test_diamond.cpp. The following diff shows the implementation of this specialized method: -----8<----- --- ../temp/boost_1_43_0/boost_1_43_0/libs/serialization/test/test_diamond.cpp Wed Jul 14 11:28:02 2010 +++ ../serializationProto.cpp Wed Jul 28 13:05:47 2010 @@ -95,6 +97,13 @@ ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); } + template<> + void save(boost::archive::text_oarchive &ar, const unsigned int i) const + { + std::cout << "Saving (Text) derived1\n"; + ar << BOOST_SERIALIZATION_BASE_OBJECT_NVP(base); + } + template<class Archive> void load(Archive & ar, const unsigned int /* file_version */) { @@ -122,6 +131,7 @@ } BOOST_SERIALIZATION_SPLIT_MEMBER() + }; class final : public derived1, public derived2 { @@ -202,3 +212,219 @@ return EXIT_SUCCESS; } ----->8----- Adding the following function definition to will result in an access violation (see call stack bellow) in access.hpp @ line 136. Any idea as to what is intrinsically wrong with code or how to fix this issue is most welcome. Call stack:

serializationProtoArchiversWrappers.exe!boost::serialization::access::cast_reference(const derived2 & u={...}) Line 136 + 0x1a bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::base_object(const derived2 & d={...}) Line 105 + 0x9 bytes C++ serializationProtoArchiversWrappers.exe!derived2::saveboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 134 + 0x9 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saverboost::archive::text_oarchive,derived2::invoke(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_memberboost::archive::text_oarchive,derived2(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!derived2::serializeboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 144 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serializeboost::archive::text_oarchive,derived2(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serializeboost::archive::text_oarchive,derived2(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adlboost::archive::text_oarchive,derived2(boost::archive::text_oarchive & ar={...}, derived2 & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::oserializerboost::archive::text_oarchive,derived2::save_object_data(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0034de3c) Line 152 + 0x3e bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0034de3c, const boost::archive::detail::basic_oserializer & bos={...}) Line 285 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive::save_object(const void * x=0x0034de3c, const boost::archive::detail::basic_oserializer & bos={...}) Line 434 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::save_standard::invoke<derived2>(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}) Line 259 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::invoke<derived2>(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save(boost::archive::text_oarchive & ar={...}, const derived2 & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchiveboost::archive::text_oarchive::save_override<derived2 const >(const derived2 & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchiveboost::archive::text_oarchive::save_override<derived2 const >(const derived2 & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchiveboost::archive::text_oarchive::operator<<<derived2 const >(const derived2 & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<derived2 const >::saveboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 80 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<derived2 const >::serializeboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 89 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp<derived2 const > & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::save_only::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}) Line 245 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<derived2 const > & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchiveboost::archive::text_oarchive::save_override(const boost::serialization::nvp<derived2 const > & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchiveboost::archive::text_oarchive::save_override(const boost::serialization::nvp<derived2 const > & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchiveboost::archive::text_oarchive::operator<<(const boost::serialization::nvp<derived2 const > & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!final::saveboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 159 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save(boost::archive::text_oarchive & ar={...}, const final & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saverboost::archive::text_oarchive,final::invoke(boost::archive::text_oarchive & ar={...}, const final & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_memberboost::archive::text_oarchive,final(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!final::serializeboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 169 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serializeboost::archive::text_oarchive,final(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serializeboost::archive::text_oarchive,final(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adlboost::archive::text_oarchive,final(boost::archive::text_oarchive & ar={...}, final & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::oserializerboost::archive::text_oarchive,final::save_object_data(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0034de38) Line 152 + 0x3e bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0034de38, const boost::archive::detail::basic_oserializer & bos={...}) Line 265 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive::save_object(const void * x=0x0034de38, const boost::archive::detail::basic_oserializer & bos={...}) Line 434 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::save_standard::invoke<final>(boost::archive::text_oarchive & ar={...}, const final & t={...}) Line 259 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::invoke<final>(boost::archive::text_oarchive & ar={...}, const final & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save(boost::archive::text_oarchive & ar={...}, const final & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchiveboost::archive::text_oarchive::save_override<final const >(const final & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchiveboost::archive::text_oarchive::save_override<final const >(const final & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchiveboost::archive::text_oarchive::operator<<<final const >(const final & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp<final>::saveboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 80 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saverboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 89 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serializeboost::archive::text_oarchive::save_only::invokeboost::archive::text_oarchive::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp<final> & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchiveboost::archive::text_oarchive::save_override(const boost::serialization::nvp<final> & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchiveboost::archive::text_oarchive::save_override(const boost::serialization::nvp<final> & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchiveboost::archive::text_oarchive::operator<<(const boost::serialization::nvp<final> & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::pointer_oserializerboost::archive::text_oarchive,final::save_object_ptr(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0034de38) Line 202 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive_impl::save_pointer(boost::archive::detail::basic_oarchive & ar={...}, const void * t=0x0034de38, const boost::archive::detail::basic_pointer_oserializer * bpos_ptr=0x005967c8) Line 403 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::basic_oarchive::save_pointer(const void * t=0x0034de38, const boost::archive::detail::basic_pointer_oserializer * bpos_ptr=0x005967c8) Line 442 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_pointer_typeboost::archive::text_oarchive::polymorphic::save<base>(boost::archive::text_oarchive & ar={...}, base & t={...}) Line 445 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_pointer_typeboost::archive::text_oarchive::save<base>(boost::archive::text_oarchive & ar={...}, const base & t={...}) Line 460 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_pointer_typeboost::archive::text_oarchive::invoke(boost::archive::text_oarchive & ar={...}, const base * const t=0x0034de38) Line 473 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save(boost::archive::text_oarchive & ar={...}, const base * const & t=0x0034de38) Line 525 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchiveboost::archive::text_oarchive::save_override(const base * const & t=0x0034de38, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchiveboost::archive::text_oarchive::save_override(const base * const & t=0x0034de38, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchiveboost::archive::text_oarchive::operator<<(const base * const & t=0x0034de38) Line 64 C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp::saveboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int __formal=0) Line 80 C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::member_save const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp & t={...}, const unsigned int file_version=0) Line 94 C++ serializationProtoArchiversWrappers.exe!boost::serialization::detail::member_saver >::invoke(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp & t={...}, const unsigned int file_version=0) Line 43 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::split_member >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp & t={...}, const unsigned int file_version=0) Line 69 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::nvp::serializeboost::archive::text_oarchive(boost::archive::text_oarchive & ar={...}, const unsigned int file_version=0) Line 89 + 0x34 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::access::serialize >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp & t={...}, const unsigned int file_version=0) Line 119 C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp & t={...}, const unsigned int file_version=0) Line 74 + 0x11 bytes C++ serializationProtoArchiversWrappers.exe!boost::serialization::serialize_adl >(boost::archive::text_oarchive & ar={...}, boost::serialization::nvp & t={...}, const unsigned int file_version=0) Line 133 + 0x18 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::save_only::invoke >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp & t={...}) Line 245 + 0xf bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::save_non_pointer_typeboost::archive::text_oarchive::invoke >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp & t={...}) Line 308 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::save const >(boost::archive::text_oarchive & ar={...}, const boost::serialization::nvp & t={...}) Line 525 + 0xd bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::common_oarchiveboost::archive::text_oarchive::save_override const >(const boost::serialization::nvp & t={...}, int __formal=0) Line 69 + 0x15 bytes C++ serializationProtoArchiversWrappers.exe!boost::archive::basic_text_oarchiveboost::archive::text_oarchive::save_override const >(const boost::serialization::nvp & t={...}, int __formal=0) Line 81 C++ serializationProtoArchiversWrappers.exe!boost::archive::detail::interface_oarchiveboost::archive::text_oarchive::operator<< const >(const boost::serialization::nvp & t={...}) Line 64 C++ serializationProtoArchiversWrappers.exe!test_main(int __formal=1, int __formal=1) Line 210 C++ serializationProtoArchiversWrappers.exe!main(int argc=1, char * * argv=0x0034e198) Line 180 + 0xd bytes C++

-- Robert Bigaignon