There are two things on my side: 1. Compiler refuses to clone private attributes. I have tried gdc/gdmd/dmd_v1 in Linux.
It was changed in dmd later, and now you can access private attributes by using tupleof. I don't know when exactly it was changed, but it should work at least with dmd 1.039 and later. GDC probably uses an ancient front-end version, and I think nobody should use it.
