[Boost-users] [boost::serialization]: Dies with access violation (segfaults) reading beyond the end of archive.

From: Konstantin Andreev (plafcow4odno_at_[hidden])
Date: 2006-09-17 15:25:32

When

1) trying to restore from archive the pointer to sample class, and
2) archive is over at this moment

boost::serialization causes Access Violation Fault in
file: basic_iarchive.cpp, line 470:
    bpis_ptr = co.bpis_ptr;

The code to reproduce the fault follows.
--
Konstantin Andreev.
------------------------( cut here )----------------------
#include <iostream>
#include <sstream>
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
class Sample
{
private:
    int pod_int;
    std::string pod_str;
 template<class Archive>
    void serialize(Archive & ar, const unsigned int ){
        ar & pod_int & pod_str;
    };
    friend class boost::serialization::access;
    friend std::ostream & operator<<(std::ostream & os, const Sample & sa );
public:
    Sample() {};
    Sample( int _i, std::string _s ) : pod_int( _i), pod_str( _s ) {};
};
BOOST_CLASS_TRACKING(Sample, track_never)
BOOST_CLASS_VERSION(Sample, 19)
std::ostream & operator<<(std::ostream & os, const Sample & sa )
{
    return os << "-- int: " << sa.pod_int << ", str: >" << sa.pod_str
        << "< at 0x " << &sa << '\n';
}
int main( void )
{
    Sample *obj_to = NULL;
    const Sample * const obj_fr = new Sample( 55, "**** test string *****" );
    std::cout << *obj_fr;
    std::stringstream archbuf;
    boost::archive::text_oarchive *oa = new boost::archive::text_oarchive( archbuf, 3 );
    *oa << obj_fr;
    std::cout << "-- archive content: >" << archbuf.str() << "<\n";
    delete oa;
    boost::archive::text_iarchive *ia = new boost::archive::text_iarchive( archbuf, 3 );
    *ia >> obj_to;
    std::cout << *obj_to;
                   ///////////////////////////////////
    *ia >> obj_to; // ARCHIVE IS OVER. BOOM !!!
                   ///////////////////////////////////
    std::cout << *obj_to;
    delete ia;
    return 0;
}