If I have a derived class, I know that the fields aren't instantiated yet when the superconstructor is called. But, can I pass a pointer to one such field (obtained with &field) to the superconstructor if I know that the superconstructor is not going to dereference the pointer?
Particularly, I want to know whether the call to &field will behave properly and point to the section of memory which will eventually contain that field.
Yes, although actually doing this would be questionable at best.