[boost] Re: Serialization issuses under MS VC++ 7.1 ....

From: troy d. straszheim (troy_at_[hidden])
Date: 2005-03-27 08:51:39

Notice that split_free.hpp is for when you have split save/load 
*freestanding* functions, and split_member.hpp is for when you have 
split save/load *member* functions.  I can't reproduce your error (I 
don't do Microsoft), but I'll guess that's it, since split_free.hpp 
isn't required by the code you posted, and that's where your error is 
coming from.

You could also try running the serialization tests on your platform.  at 
$BOOST_ROOT/libs/serialization/test.  There are surely a couple of tests 
in there that demonstrate the technique...

troy d. straszheim

jason wrote:
> I'm all new to C++, let alone Boost, so do excuse me if this is a dumb 
> post, I've only been using C++ for a few weeks now, and come froma web 
> design background.
> 
> Anyway, I am getting a
> 
> Error C2780 .\boost_1_32_0\boost\serialization\split_free.hpp(45): error 
> C2780: 'void boost::archive::save(Archive &,const T &)' : expects 2 
> arguments - 3 provided
> 
> message when I use STL containers in Boost and the 
> BOOST_SERIALIZATION_SPLIT_MEMBER() macro in my class. I have found when 
> I don't split the serialize method into load / save methods it works 
> fine. However, I need separate load / save methods as some of the 
> members in my class are not serializable (they are SDL resources, and 
> therefore uploading I need to do some other work to restore these members).
> 
> Here is a chunk of example code that fails...
> 
> class P {
> private:
> int qw;
> 
> friend class boost::serialization::access;
> 
> template<class Archive>
>    void serialize(Archive& ar, const unsigned int version)
> {
>  ar & qw;
> }
> public:
> P() : qw(0) {}
> P(int Qw) : qw(Qw) {}
> };
> 
> typedef std::list<P*> pList;
> 
> class Test {
> pList p;
> 
> friend class boost::serialization::access;
> BOOST_SERIALIZATION_SPLIT_MEMBER()
> 
> template<class Archive>
>    void load(Archive& ar, const unsigned int version)
> {
>  ar & p;
> }
> 
> template<class Archive>
>    void save(Archive& ar, const unsigned int version) const
> {
>  ar & p;
> }
> 
> public:
> Test() {}
> };
> 
> Using
> 
> Test t;
> std::ofstream ofs("frameTest");
> boost::archive::text_oarchive oa(ofs);
> oa << t;
> ofs.close();
> 
> creates this error. To me it seems like this might be a library issue. 
> However could someone point out what I am doing wrong if it is me, and 
> if it is a lib issue, could they hint /suggest some sort of cleanish 
> workaround. I am going to mess about and hack together a workaround by 
> not splitting the serialize method into load/save methods in the class 
> affected for now, however I'm sure other people on this list will be 
> able to suggest better solutions than mine.
> 
> And yes, I am including the list.hpp file incase anyone thinks I'm not 
> including it.
> 
> Jason.
> 
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