[Boost-users] [iostreams]combining serialization archive with iostreams filtering_streambuf

From: cpper (coolcute_at_[hidden])
Date: 2008-04-23 08:40:08

Hi all:
I have spent a day long in finding a way of
combining serialization archive with iostreams filtering_streambuf

but now I encounter a strange problem,
here is my code:

#include <sstream>

#include <boost/iostreams/device/back_inserter.hpp>
#include <boost/iostreams/filtering_stream.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/filter/bzip2.hpp>

#include <boost/archive/binary_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/serialization/string.hpp>

#include <boost/iostreams/stream.hpp>

#include <vector>

int main ()
{
        std::vector<char> store;

        boost::iostreams::filtering_ostreambuf out;

        out.push(boost::iostreams::bzip2_compressor());
        out.push(boost::iostreams::back_inserter(store));

        {
                boost::archive::binary_oarchive oa(out);
                oa << "abc";

                // archive closed when destructors are called
                //out.pop ();//call before oa destroyed, crashed!!!!
        }
        out.pop ();//call after oa destroyed the behavior seems normal
        //out.reset ();

        boost::iostreams::filtering_istreambuf in;
        
        in.push(boost::iostreams::bzip2_decompressor());
        in.push(boost::make_iterator_range(store));

        {
                std::string aft;
                boost::archive::binary_iarchive ia(in);
                ia >> aft;
        }
}

if I call pop() or reset() before archive destructor called.

exception in:
C:\Program Files\Microsoft Visual Studio 9.0\VC\crt\src\streambuf
in this member method of std::streambuf
int pubsync()

error message is below:
Unhandled exception at 0x10499231 (msvcp90d.dll) in basic_usage.exe:
0xC0000005: Access violation reading location 0xfeeeff1e.

If I call out.pop() after oa destroyed,the behavior is exactly what I want.

But I just wonder why it goes in this way?
Code like below
        {
                boost::archive::binary_oarchive oa(out);
                oa << "abc";
        }
        out.pop ();//call after oa destroyed the behavior seems normal
which appears that I have done something wrong...

I'm using VS2008TS under Win2003SP2

Can anybody help?