This is a different problem.
DynamicArray<A> ArrayOfAs; ArrayOfAs.Element = new A[5]; ArrayOfAs.Size = 5; A* secondElement = &ArrayOfAs.Element[1];
std::stringstream stream; { boost::archive::text_oarchive oa(stream); oa & secondElement; // new object created here oa & ArrayOfAs; // attempt to reload an already loaded object
to new address - throw exception - pointer conflict
}
the following should work: oa & ArrayOfAs; // load objects into array oa & secondElement; // load pointer to previouslt created object Robert Ramey Ivan Rachev wrote:
Robert Ramey wrote:
Ahhh yes. Basically the STATIC_ASSERT is preventing you from setting tracking for a primitive type. This almost HAS to be an error. Doing this will effect serialization of all char's in your program which is almost certainly what you don't want to do. If you want to do this, You'll have to wrap a char in your own type so its not a primitive anymore. Then it will pass.
Let's say the wrapper for char is A (from Martin's example). Then we would have a dynamic array of As. If I try to serialize a pointer pointing to one of these As inside the array, boost::serialization crashes. Example and stack trace follows at the end.
Ivan
#include <sstream>
#include <boost/archive/text_iarchive.hpp> #include <boost/archive/text_oarchive.hpp> #include <boost/serialization/access.hpp> #include <boost/serialization/split_member.hpp>
class A { friend class boost::serialization::access; template<class Archive> void serialize(Archive & ar, const unsigned int version) {} };
template <typename T> struct DynamicArray { int Size; T* Element;
friend class boost::serialization::access; template<class Archive> void save(Archive & ar, const unsigned int version) const { ar & Size; for (int i = 0; i < Size; ++i) ar & Element[i]; } template<class Archive> void load(Archive & ar, const unsigned int version) { ar & Size; assert( Size >=0 ); if (Size > 0) { Element = new T[Size]; for (int i = 0; i < Size; ++i) ar & Element[i]; } } BOOST_SERIALIZATION_SPLIT_MEMBER() };
int main(int argc, char* argv[]) { DynamicArray<A> ArrayOfAs; ArrayOfAs.Element = new A[5]; ArrayOfAs.Size = 5; A* secondElement = &ArrayOfAs.Element[1];
std::stringstream stream; { boost::archive::text_oarchive oa(stream); oa & secondElement; oa & ArrayOfAs; }
delete [] ArrayOfAs.Element; }
STACK: 77e9e8bb 77e9e8bb
_STL::__stl_debug_engine<bool>::_M_attach(_STL::__owned_list * __l=0x004f7db4, _STL::__owned_link * __c_node=0x00000001) Line 435 C++ _STL::_Atomic_swap(volatile long * __p=0x00000001, long __q=1243908) Line 458 C++ 004f7db4 _CxxThrowException(void * pExceptionObject=0x0012fb14, const _s__ThrowInfo * pThrowInfo=0x004b9c84) C++ boost::throw_exception<boost::archive::archive_exception>(const boost::archive::archive_exception & e={...}) Line 40 C++
boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::det ail::basic_oarchive
& ar={...}, const void * t=0x004f5951, const boost::archive::detail::basic_oserializer & bos={...}) Line 284 C++ boost::archive::detail::basic_oarchive::save_object(const void * x=0x004f5951, const boost::archive::detail::basic_oserializer & bos={...}) Line 395 C++
boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive, A>::save::invokex(boost::archive::text_oarchive
& ar={...}, const A & t={...}) Line 235 C++
boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive, A>::invoke(boost::archive::text_oarchive
& ar={...}, const A & t={...}) Line 309 C++
boost::archive::save<boost::archive::text_oarchive,A>(boost::archive::text_o archive
& ar={...}, const A & t={...}) Line 551 C++
boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_ove rride<A>()
Line 71 C++
boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::o perator<<<A>()
Line 81 C++
boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::o perator&<A>()
Line 111 C++ DynamicArray<A>::save<boost::archive::text_oarchive>() Line 26 C++
boost::serialization::access::member_save<boost::archive::text_oarchive,Dyna micArray<A>
(boost::archive::text_oarchive & ar={...}, const DynamicArray<A> & t={...}, const unsigned int file_version=0) Line 91 C++
boost::serialization::detail::member_saver<boost::archive::text_oarchive,Dyn amicArray<A>
::invoke(boost::archive::text_oarchive & ar={...}, const DynamicArray<A> & t={...}, const unsigned int file_version=0) Line 42 C++
boost::serialization::split_member<boost::archive::text_oarchive,DynamicArra y<A>
(boost::archive::text_oarchive & ar={...}, DynamicArray<A> & t={...}, const unsigned int file_version=0) Line 67 C++ DynamicArray<A>::serialize<boost::archive::text_oarchive>() Line 40 C++
boost::serialization::access::serialize<boost::archive::text_oarchive,Dynami cArray<A>
(boost::archive::text_oarchive & ar={...}, DynamicArray<A> & t={...}, const unsigned int file_version=0) Line 107 C++
boost::serialization::serialize<boost::archive::text_oarchive,DynamicArray<A
(boost::archive::text_oarchive & ar={...}, DynamicArray<A> & t={...}, const unsigned int file_version=0) Line 78 C++
boost::serialization::serialize_adl<boost::archive::text_oarchive,DynamicArr ay<A>
(boost::archive::text_oarchive & ar={...}, DynamicArray<A> & t={...}, const unsigned int file_version=0) Line 121 C++
boost::archive::detail::oserializer<boost::archive::text_oarchive,DynamicArr ay<A>
::save_object_data(boost::archive::detail::basic_oarchive & ar={...}, const void * x=0x0012ff54) Line 152 C++
boost::archive::detail::basic_oarchive_impl::save_object(boost::archive::det ail::basic_oarchive
& ar={...}, const void * t=0x0012ff54, const boost::archive::detail::basic_oserializer & bos={...}) Line 257 C++ boost::archive::detail::basic_oarchive::save_object(const void * x=0x0012ff54, const boost::archive::detail::basic_oserializer & bos={...}) Line 395 C++
boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive, DynamicArray<A>
::save::invokex(boost::archive::text_oarchive & ar={...}, const DynamicArray<A> & t={...}) Line 235 C++
boost::archive::detail::save_non_pointer_type<boost::archive::text_oarchive, DynamicArray<A>
::invoke(boost::archive::text_oarchive & ar={...}, const DynamicArray<A> & t={...}) Line 309 C++ boost::archive::save<boost::archive::text_oarchive,DynamicArray<A> (boost::archive::text_oarchive & ar={...}, const DynamicArray<A> & t={...}) Line 551 C++
boost::archive::basic_text_oarchive<boost::archive::text_oarchive>::save_ove rride<DynamicArray<A>
() Line 71 C++
boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::o perator<<<DynamicArray<A>
() Line 81 C++
boost::archive::detail::interface_oarchive<boost::archive::text_oarchive>::o perator&<DynamicArray<A>
(DynamicArray<A> & t={...}) Line 111 C++ main(int argc=1, char * * argv=0x004f7478) Line 55 C++ mainCRTStartup() Line 398 C 77e9ca90