Re: [Boost-users] Serialization of forward declared class

Subject: Re: [Boost-users] Serialization of forward declared class
From: niranjan bangera (niranjannina_at_[hidden])
Date: 2009-01-12 00:19:14

hi all,

> i have done in the following way.. even am getting some errors, did i miss
> any of the headers,  or added extra(added extra for sure).
>
> Any suggestions will be accepted
>
>     #include <boost/serialization/utility.hpp>
>     #include <boost/serialization/collection_traits.hpp>
>     #include <boost/serialization/serialization.hpp>
>     #include <boost/serialization/base_object.hpp>
>     #include <fstream>
>      #include <boost/archive/text_iarchive.hpp>
>     #include <boost/archive/text_oarchive.hpp>
>     #include <boost/serialization/assume_abstract.hpp>
>
>   class fd;
>
>  class base: class derived
>  {
>  .....
>      fd *ptr;
>  .....
>
>      friend class boost::serialization::access;
>      template<class Archive>
>      void serialize(Archive & ar, const unsigned int file_version)
>      {
>              (void) file_version;
>              ar & ptr;
>              ar & boost::serialization::base_object<derived>(*this);
>
>      }
>
>  }; //end of class base
>
> Version::1.36.0
> compliler: g++ 4.1.1....
>
> i am getting a error :
> error: forward declaration of 'struct fd'
> /boost_1_36_0/include/boost-1_36/boost/serialization/access.hpp:109: error:
> inva
> lid use of undefined type 'struct
>
> /project/wipro_virtutech_nobackup/users/niranjan/project_new/boost_1_36_0/include/boost-1_36/boost/serialization/extended_type_info_typeid.hpp:117:
> note: neither the destructor nor the class-specific operator delete will be
> called, even if they are declared when the class is defined.
>
> Thanks in advance.....
>