Re: [Boost-users] boost serialization 1.32

From: Robert Ramey (ramey_at_[hidden])
Date: 2005-07-07 10:40:42

Note that native binary archives are not guarenteed portable across
environments.  text and xml archives should be. Also note that there is demo
of a portable binary archive (it doesn't handle floats) included with the
package.

On the other hand, I would expect gcc 3.3 and visual studio 7.1 to produce
binary archives which inter-operate - assuming they are both for x86
machines.  It would be interesting to know where the difference comes from.

Robert Ramey

luke wrote:
> Dear list
>
> I try to read back a serialized structure (binary).
> It works fine with gcc 3.3 on linux but I get problems
> with visualstudio 7.1. reading back the file.
>
>   > wrong input data
>   > uncaught exception at: ar >> new_strucutre;
>
> Are there some hints/ experiences with Visualstudio ??
> Below I have a short code abstraction what I'm doing basically.
>
> Thanks
>   luke
>
> ==== snip ====
>
>   struct foo
>   {
>     int posx;
>     int posz;
>
>     friend class boost::serialization::access;
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int version)
>      {
>        ar & posx;
>        ar & posz;
>      }
>   };
>
>   class Manager
>   {
>     public:
>      Manager();
>      ~Manager();
>
>     std::vector<foo> fool_;
>
>     friend class boost::serialization::access;
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int version)
>      {
>        ar & fool_;
>      }
>
>     private:
>
>   };
>
>   struct test
>   {
>     int id;
>     int age;
>     Manager manager;
>
>     friend class boost::serialization::access;
>     template<class Archive>
>      void serialize(Archive & ar, const unsigned int version)
>      {
>        ar & id;
>        ar & age;
>        ar & manager;
>      }
>
>   };
>
>   int main()
>   {
>     //CREATE
>     test test_foo;
>     test_foo.id = 1;
>     test_foo.age = 2;
>     foo new_foo;
>     new_foo.posx = 100;
>     new_foo.posz = 110;
>     test_foo.manager.fool_.push_back(new_foo);
>
>     //WRITE
>     std::ofstream ofsb("filenameb");
>     boost::archive::binary_oarchive ob(ofsb);
>     ob << test_foo;
>     ofsb.close();
>
>     //READBACK
>     std::ifstream ifs(fname.c_str(), std::ios::binary);
>     boost::archive::text_iarchive ia(ifs);
>
>     ia >> new_test;  // EXCEPTION
>
>     ifs.close();
>
>   }
>
> ==============