--- Eyal Susser wrote:

Hi, I'm using the serialization library, but have encountered problems.

I have an archiver that I use with a stringstream to serialize objects. I write some ints to the archive using "ar << my_int", and finally I archive a derived class wi ar << derived. So far, so good.

In a different process, I create an input archiver, read the integers, and then pass the archiver to a different method, where I create an instance of the class I serialized and use "ar >> instance". This throws an exception.

The code for the object created is one *.so, and teh code that does the creating does it with a templated class factory in a different *.so. Is that why I'm gettin the exceptions? Is there a solution?

The exception is boost::archive::archive_exception what(): stream error.

Thanks.

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Are you registering all your classes you are serializing? Your input archiver may not know about all class types in your archive. Use the macro BOOST_CLASS_EXPORT(ClassName) to export a GUID for every class. This should be in a .cpp file outside of any functions. include to use it. This include should be placed after any archiver includes. Also within your class (if it is a container for other classes) you will need to do this in your serialize function: ar.register_type(static_cast(NULL)); // if they are pointers Have fun, -K __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com