Re: [boost] [serialization] "stream error" when port from boost_1.33 toboost_1.36

Subject: Re: [boost] [serialization] "stream error" when port from boost_1.33 toboost_1.36
From: ipangth (ipangth_at_[hidden])
Date: 2008-09-25 21:56:37

What are the anomolies?
 I debug the xml file with VC8, and  the ifstream test retturn "failbit".
See the xml file attached behind, i dont know how to find the "failbit".
And some one can see the attach xml to help me?

template<class CharType>
bool basic_xml_grammar<CharType>::my_parse(
    BOOST_DEDUCED_TYPENAME basic_xml_grammar<CharType>::IStream & is,
    const rule_t & rule_,
    CharType delimiter
){
    if(is.fail()){ ////here return false, the stream state is "failbit"
        boost::throw_exception(
            archive_exception(archive_exception::stream_error)
        );
    }

2008/9/26 Robert Ramey <ramey_at_[hidden]>:
> Take a look at the xml archive and see if there are any anomolies in it.
>
> Robert Ramey
>
> ipangth wrote:
>>> I just port a project using boost_1.33_1 to use boost_1.36.
>>> The project has a Server class using a std::set<Server>
>>> serialization,
>>> the serialization save and load functions code see behind.
>>>
>>> I use gcc 4.1 and run on FC6.
>>> The porting problem is, when the old boost_1.33 generates(save) a
>>> xml file, then use  boost_1.36 load the xml throws an exception
>>> "stream error"!
>>>
>>> the exception error code line : boost::archive::xml_iarchive ia(ifs);
>>>
>>> How can i sovle it?
>>>
>>>
>>> class Server
>>> {
>>> public:
>>>   int id;
>>>   std::string ip;
>>>   int port;
>>>
>>> private:
>>>   static std::set<Server> lst_;
>>>
>>>   static int dirty_;
>>> };
>>>
>>> #endif
>>>
>>>
>>>
>>> #ifdef USE_SERVER_SERIALIZATION
>>>
>>> #ifndef _SERVER_SERIALIZATION_
>>> #define _SERVER_SERIALIZATION_
>>>
>>> BOOST_CLASS_VERSION(Server, 1)
>>> namespace boost {
>>>   namespace serialization {
>>>
>>>       template <class archive>
>>>       void serialize(archive & ar, Server & t, const unsigned int
>>>       ver) {
>>>           ar & BOOST_SERIALIZATION_NVP(t.id);
>>>           ar & BOOST_SERIALIZATION_NVP(t.ip);
>>>           ar & BOOST_SERIALIZATION_NVP(t.port);
>>>       }
>>>
>>>   }
>>> }
>>>
>>> #endif
>>>
>>> #endif
>>>
>>> int Server::save(    const std::string & file)
>>> {
>>>   try {
>>>       std::ofstream ofs(file.c_str(), std::ios::binary);
>>>       {
>>>       boost::archive::xml_oarchive oa(ofs);
>>>       oa << BOOST_SERIALIZATION_NVP(lst_);
>>>       }
>>>   } catch(...) {
>>>       return ERROR_ERROR;
>>>   }
>>>
>>>
>>>
>>>   return ERROR_SUCCEED;
>>> }
>>>
>>>
>>> int  Server::load(const std::string & file)
>>> {
>>>       std::set<Server> Server::lst_;
>>>       try
>>>       {
>>>         std::ifstream ifs(file.c_str(), std::ios::binary);
>>>
>>>         {
>>>           boost::archive::xml_iarchive ia(ifs);
>>>           ia >> BOOST_SERIALIZATION_NVP(lst_);
>>>         }
>>>       }
>>>       catch(std::exception & e)
>>>       {
>>>                       std::cout  << e.what() << std::endl;
>>>       }
>>>
>>>       return 0;
>>> }
>>>
>>>
>>>
>>>
>>> --
>>> Best regards,
>>> PangYongQiang
>>>
>>
>>
>>
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>>> http://lists.boost.org/mailman/listinfo.cgi/boost
>
>
>
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-- 
Best regards,
PangYongQiang