Hi,

   I tried including <boost/serialization/string.hpp> file but still getting the crash.
   I have tried to resolve the problem by overloading << as follows :
   XMLArchive & operator << (XMLArchive &xa, const struct EMPLOYEE &e)
   {
       xa << BOOST_SERIALIZATION_NVP(e.id);
       xa << BOOST_SERIALIZATION_NVP(e.name);

       return xa;
   }

   and calling it like this :
   xa << e;

   But, though I am getting the expected result, it still gives me a WARNING As follows :

   test.cc: In function ‘int main()’:
   test.cc:94: warning: ISO C++ says that these are ambiguous, even though the worst conversion for the first is better than the worst conversion for the second:
   test.cc:72: note: candidate 1: XMLArchive& operator<<(XMLArchive&, const EMPLOYEE&)
   /usr/include/boost/archive/detail/interface_oarchive.hpp:63: note: candidate 2: Archive& boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T = EMPLOYEE, Archive = boost::archive::xml_oarchive]

   If I call "<<()" as :
   operator <<(xa, e);
   then it gives me no WARNING.

   Also, "ltrace -C " for the crashed program is as below :

__libc_start_main(0x804a554, 1, 0xbf973d44, 0x804beb0, 0x804bea0 <unfinished ...>
std::ios_base::Init::Init()(0x804f554, 0x8967bc, 0, 0xb7f52438, 1)                               = 9
__cxa_atexit(0x804a2b8, 0x804f554, 0x804bf68, 0xb7f52438, 1)                                     = 0

__cxa_guard_acquire(0x804f558, 0x804f258, 0, 0x48bff4, 0x804beb0)                                = 1
__cxa_guard_acquire(0x804f560, 0x8049d93, 0x23b1f0, 0xb7f532f0, 0xb7f53a8c)                      = 1
boost::serialization::detail::extended_type_info_typeid_0::extended_type_info_typeid_0()(0x804f590, 0xbf973b74, 1, 1, 0) = 0xb6bf88
boost::serialization::detail::extended_type_info_typeid_0::type_register(std::type_info const&)(0x804f590, 0x804c7f4, 1, 1, 0) = 0x99d0008
__cxa_guard_release(0x804f560, 0x8049d93, 0x23b1f0, 0xb7f532f0, 0xb7f53a8c)                      = 0x804f560
__cxa_atexit(0x804b20c, 0x804f590, 0x804bf68, 0xb7f532f0, 0xb7f53a8c)                            = 0
boost::archive::detail::basic_oserializer::basic_oserializer(boost::serialization::extended_type_info const&)(0x804f584, 0x804f590, 0x804f38c, 0, 0x23b1f0) = 0x804f584
__cxa_guard_release(0x804f558, 0x804f258, 0, 0x48bff4, 0x804beb0)                                = 0x804f558
__cxa_atexit(0x804ae62, 0x804f584, 0x804bf68, 0x48bff4, 0x804beb0)                               = 0

std::basic_ofstream<char, std::char_traits<char> >::basic_ofstream(char const*, std::_Ios_Openmode)(0xbf973b1c, 0x804c0af, 48, 0x896818, 0xb7f52428) = 0xbf973ba8
boost::archive::xml_oarchive_impl<boost::archive::xml_oarchive>::xml_oarchive_impl(std::ostream&, unsigned int)(0xbf973c30, 0xbf973b1c, 0, 0x48bff4, 0) = 0

std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string()(0xbf973c64, 0xbf973b1c, 0, 0x48bff4, 0) = 0xbf973c64
std::string::operator=(char const*)(0xbf973c64, 0x804c0bd, 48, 0x896818, 0xb7f52428)             = 0xbf973c64

boost::archive::basic_xml_oarchive<boost::archive::xml_oarchive>::save_start(char const*)(0xbf973c30, 0x804c0c8, 0xff636d6e, 0xbf973c60, 0x804c0bd) = 0xbf973c30
boost::archive::detail::basic_oarchive::save_object(void const*, boost::archive::detail::basic_oserializer const&)(0xbf973c30, 0xbf973c60, 0x804f584, 0x1010101, 0x1010101 <unfinished ...>
boost::archive::basic_xml_oarchive<boost::archive::xml_oarchive>::save_override(boost::archive::class_id_optional_type const&, int)(0xbf973c30, 0xbf973a0c, 0, 0, 0xaffd10) = 0xbf973b1c
boost::archive::basic_xml_oarchive<boost::archive::xml_oarchive>::save_override(boost::archive::tracking_type const&, int)(0xbf973c30, 0xbf973a1f, 0, 0, 0xaffd10) = 0xbf973b1c
boost::archive::basic_xml_oarchive<boost::archive::xml_oarchive>::save_override(boost::archive::version_type const&, int)(0xbf973c30, 0xbf973a10, 0, 0, 0xaffd10) = 0xbf973b1c

__dynamic_cast(0xbf973c30, 0x804f4f0, 0x804c9ec, 0, 0xafd170)                                    = 0
__cxa_bad_cast(0xbf973c30, 0x804f4f0, 0x804c9ec, 0, 0xafd170 <unfinished ...>
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
terminate called after throwing an instance of 'std::bad_cast'
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 1, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 6
__gxx_personality_v0(1, 2, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 8
__gxx_personality_v0(1, 6, 0x432b2b00, 0x474e5543, 0x99d2480)                                    = 7
what(): std::bad_cast
--- SIGABRT (Aborted) ---
+++ killed by SIGABRT +++