// The other object is of a derived class, so clear the flags as they
// might no longer apply (especially hash_calculated). Oh, and don't
// copy the tinfo_key: it is already set correctly for this object.
// The other object is of a derived class, so clear the flags as they
// might no longer apply (especially hash_calculated). Oh, and don't
// copy the tinfo_key: it is already set correctly for this object.