Nothing stands out to me. Polymorphic.... hmm... I don't do anything of the sort in my example. Doesn't really explain why the warning is there does it. So that readers can follow along... here's extended_type_info_typeid.hpp line 88: // get the eti record for the true type of this record // relying upon standard type info implemenation (rtti) const extended_type_info * get_derived_extended_type_info(const T & t) const { // note: this implementation - based on usage of typeid (rtti) // only does something if the class has at least one virtual function. BOOST_STATIC_WARNING(boost::is_polymorphic<T>::value); return detail::extended_type_info_typeid_0::get_extended_type_info( typeid(t) ); ----- Original Message ----- From: Roman Perepelitsa To: boost-users@lists.boost.org Sent: Tuesday, March 09, 2010 12:41 AM Subject: Re: [Boost-users] [Serialization] Strange giant warning 2010/3/8 David <evildavo@gmail.com> 1>d:\dev\boostpro\boost\boost_1_40\boost\serialization\extended_type_info_typeid.hpp(88) : warning C4099: 'boost::serialization::static_warning_impl<false>::STATIC_WARNING' : type name first seen using 'struct' now seen using 'class' Take a look at extended_type_info_typeid.hpp line 88. Roman Perepelitsa. ------------------------------------------------------------------------------ _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users