Hi Christian, The construct you are using requires a const copy ctor. > I think this is similar to what std::auto_ptr does. It also has a non-const > copy constructor. But I also noticed some strange auto_ptr_ref-stuff there > which I never understood. Yes, that's what the auto_ptr_ref stuff does. > Maybe that's working around this problem. It's not a problem, per se. It's intentional, by design. > btw: I was doing exactly that on a windows machine with Visual Studio > 7.something without any problems. In that VC7 was not compliant with the C++ standard on this issue is not particularly surprising. VC8 is much better regarding compliance to the C++ standard. I don't know if it is compliant on this particular issue or not. HTH, --Eljay
