Christoph wrote:

Consider the following class hierarchy:

A - B - C1 \- B2 - C2

Is the following correct: * when A is an abstract class then (without any data members!) then I do not need to provide serialization support for this class

use BOOST_IS_ABSTRACT(A) then you don't have provide serialization support

* when A does have data members (and so does C) but B does not add any data and B furthermore is abstract (so the actuall class will be C1..) then no searialization support is needed for B?

if you want to serialize the data in A then B should have ar & base_object(A)(*this) Robert Ramey

Is this correct? Should I provide serialization support for these classes even *if* it is correct?

Best regards and thank you Christoph