attachment set

ybungalobill@… — Sun, 24 Apr 2011 08:02:08 GMT

attachment → serbug.zip

s.skorniakov@… — Thu, 26 Jan 2012 10:59:51 GMT

Same problem while upgrading from 1.36.0 to 1.48.0. I had checked basic_binary_iarchive::load_override for class_id_type - from versions 1.32.0 to 1.43.0 (serialization library versions from 3 to 7) its identical:

    void load_override(class_id_type & t, int){
        // upto 32K classes
        int_least16_t x;
        * this->This() >> x;
        t = class_id_type(x);
    }

In version 1.44.0 (library version 8) load_override for class_id_type is not specialized in basic_binary_iarchive. In version 1.48.0 I see

        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{
            int x=0;
            * this->This() >> x;
            t = boost::archive::class_id_type(x);
        }

I do not understand, why author made difference between version 7 and earlier versions. From my point of view, it is an error (introduced in version 1.45.0). Following code can read my old files (library versions 3-5) :

    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
        {
            int_least16_t x=0;
            * this->This() >> x;
            t = boost::archive::class_id_type(x);
        }
    }

Boost C++ Libraries: Ticket #5499: Serialization backward compatability

attachment set