Re: [Boost-bugs] [Boost C++ Libraries] #4903: Serialization library in Boost 1.45 is unable to read archive created with Boost 1.39

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #4903: Serialization library in Boost 1.45 is unable to read archive created with Boost 1.39
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-01-23 02:50:04

#4903: Serialization library in Boost 1.45 is unable to read archive created with
Boost 1.39
-------------------------------------------------------+--------------------
  Reporter:  Rüdiger Brünner <rbruenner@…>             |       Owner:  ramey        
      Type:  Bugs                                      |      Status:  new          
 Milestone:  To Be Determined                          |   Component:  serialization
   Version:  Boost 1.45.0                              |    Severity:  Showstopper  
Resolution:                                            |    Keywords:               
-------------------------------------------------------+--------------------

Comment (by ramey):

 OK - looks like you're on to something here.  I'm testing the following
 now:


 {{{
     void load_override(class_id_type & t, int version){
         library_version_type lvt = this->get_library_version();
         if(boost::archive::library_version_type(7) < lvt){
             this->detail_common_iarchive::load_override(t, version);
         }
         else
         if(boost::archive::library_version_type(6) < lvt){
             int_least16_t x=0;
             * this->This() >> x;
             t = boost::archive::class_id_type(x);
         }
         else
         if(boost::archive::library_version_type(3) < lvt){
         {
             int x=0;
             * this->This() >> x;
             t = boost::archive::class_id_type(x);
         }
         else{
             // upto 255 versions
             unsigned char x=0;
             * this->This() >> x;
             t = version_type(x);
         }
     }
 }}}

 This should be a more general solution.

 Robert Ramey

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/4903#comment:15>
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