Re: [Boost-users] [Serialization] Problems Getting Started

From: Mikko Vainio (mivainio_at_[hidden])
Date: 2007-02-08 02:31:58

Jeff,

Try #include <boost/serialization/serialization.hpp>

Rgds,
Mikko

Jeffrey Brent McBeth wrote:
> It seems that most people are getting past this, but I have been unable to
> get serialization to get to work on even simple classes.  A search of the
> last three months' archives and google didn't turn up anything obvious, so I
> am relying on your good humor.
> 
> When I try to compile a (I think simple) class like
> 
> #include <fstream>
> #include <boost/serialization/string.hpp>
> #include <boost/archive/text_oarchive.hpp>
> #include <boost/archive/text_iarchive.hpp>
> 
> class Card
> {
> public:
> 	Card():name("Icky"){}
> private:
> 	std::string name;
> 
> 	friend class boost::serialization::access;
> 	template <class Archive>
> 	void serialize(Archive &ar, const unsigned int version) 
> 	{ ar & name; }
> };
> 
> int main(int argc, char *argv[])
> {
> 	const Card Howdy;
> 
> 	std::ofstream ofs("Foo");
> 	boost::archive::text_oarchive oa(ofs);
> 
> 	oa << Howdy;
> }
> 
> 
> I get myriad errors
> 
> mcbeth_at_sirocco ~/tmp/blah $ g++ blah.cpp  -lboost_serialization
> /usr/include/boost/archive/detail/oserializer.hpp: In constructor
> 'boost::archive::detail::oserializer<Archive, T>::oserializer() [with
> Archive = boost::archive::text_oarchive, T = Card]':
> /usr/include/boost/archive/detail/oserializer.hpp:135:   instantiated from
> 'static boost::archive::detail::oserializer<Archive, T>&
> boost::archive::detail::oserializer<Archive, T>::instantiate() [with Archive
> = boost::archive::text_oarchive, T = Card]'
> /usr/include/boost/archive/detail/oserializer.hpp:264:   instantiated from
> 'static void boost::archive::detail::save_non_pointer_type<Archive,
> T>::save_standard::invoke(Archive&, const T&) [with Archive =
> boost::archive::text_oarchive, T = Card]'
> /usr/include/boost/archive/detail/oserializer.hpp:322:   instantiated from
> 'static void boost::archive::detail::save_non_pointer_type<Archive,
> T>::invoke(Archive&, const T&) [with Archive =
> boost::archive::text_oarchive, T = Card]'
> /usr/include/boost/archive/detail/oserializer.hpp:536:   instantiated from
> 'void boost::archive::save(Archive&, const T&) [with Archive =
> boost::archive::text_oarchive, T = Card]'
> /usr/include/boost/archive/basic_text_oarchive.hpp:78:   instantiated from
> 'void boost::archive::basic_text_oarchive<Archive>::save_override(T&, int)
> [with T = const Card, Archive = boost::archive::text_oarchive]'
> /usr/include/boost/archive/detail/interface_oarchive.hpp:78:   instantiated
> from 'Archive&
> boost::archive::detail::interface_oarchive<Archive>::operator<<(T&) [with T
> = const Card, Archive = boost::archive::text_oarchive]'
> blah.cpp:26:   instantiated from here
> /usr/include/boost/archive/detail/oserializer.hpp:107: error: incomplete
> type 'boost::serialization::extended_type_info_null<Card>' used in nested
> name specifier
> /usr/include/boost/archive/detail/oserializer.hpp: In member function 'bool
> boost::archive::detail::oserializer<Archive, T>::is_polymorphic() const
> [with Archive = boost::archive::text_oarchive, T = Card]':
> blah.cpp:26:   instantiated from here
> /usr/include/boost/archive/detail/oserializer.hpp:131: error: invalid use of
> undefined type 'struct boost::serialization::extended_type_info_null<Card>'
> /usr/include/boost/serialization/type_info_implementation.hpp:26: error:
> declaration of 'struct boost::serialization::extended_type_info_null<Card>'
> /usr/include/boost/archive/detail/oserializer.hpp:132: error: invalid use of
> undefined type 'struct boost::serialization::extended_type_info_null<Card>'
> /usr/include/boost/serialization/type_info_implementation.hpp:26: error:
> declaration of 'struct boost::serialization::extended_type_info_null<Card>'  
> 
> 
> 
> The relevant bit seems to be that extended_type_info_null<Card> is an
> incomplete type, which would point to me missing an important header or
> something.  Relevant details
> Fails on (with slightly different wording but same errors)
> Gentoo Linux, g++-4.1.1, Boost 1.33.1
> Gentoo Linux, g++-3.4.6, Boost 1.33.1
> Max OSX (Tiger), g++-4.0.1, Boost 1.33.1
> Max OSX (Tiger), g++-3.3, Boost 1.33.1
> 
> If needed, I can try it out on a WinXP box with VS2003 in about 7 hours.
> 
> Thanks again for your patience
> Jeff

-- 
:: Mikko Vainio <mikko.vainio_at_[hidden]> tel + 358 2 215 4600
:: Structural Bioinformatics Laboratory
:: Department of Biochemistry and Pharmacy
:: Abo Akademi University, Tykistokatu 6A, FI-20520 Turku Finland