Re: [Boost-users] Problem with serialization of shared_ptr (withexample code)

From: Robert Ramey (ramey_at_[hidden])
Date: 2006-06-09 14:23:55

I'm concerned that the input put archive is not destroyed soon enough.
It has to hold a copy of the shared pointer as long its open.  Try the 
following
changes: (I've simplified it a little)

int main(int argc, char **argv)
{
    const char *filename = "bag.ser";
    {
        const Bag b(shared_ptr<Item>(new Item(1)));
        // now serialize the Bag
        cout << "About to serialize bag..." << endl;
        ofstream osSer(filename);
        boost::archive::text_oarchive oa(osSer);
        oa << b;
        b.printUseCount();
        cout << "About to delete bag 1..." << endl;
    } // no need for stream close, archive and stream closed automatically
    cout << "About to create a new bag..." << endl;
    Bag b1;
    {
        b1.printUseCount();
        // and deserialize it into the new Bag object
        cout << "About to deserialize bag..." << endl;
        ifstream isSer(filename, std::ios::binary);
        boost::archive::text_iarchive ia(isSer);
        ia >> b1;
        b1.printUseCount(); // should equal 2 - b1 plus one in the archive
    } // close all streams and archives
    b1.printUseCount(); // should equal 1 - b1 plus one in the archive
    return 0;
}

I haven't tested this - if it doesn't work as expected - my name is mud 
here.

Robert Ramey