Hi Peter and Robert, Many thanks for your replies. Destroying the input archive solves the problem. Best wishes, Tim Robert Ramey wrote:
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
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