Can you show some code? -b On 2/22/09 4:51 PM, "bastl73" <sebastian.bw@xxxxxxxxxx> wrote: > > I have now made an empty dummy class. The real classes now implements that > dummy class and extend it like they need. So I have a basis to access all > that classes with a dummy pointer. > Now the linker says it has "undefined reference" of that dummy class and > undefined reference to vtable. > I think gcc does full optimisation and doesn't generate that empty dummy > class. > Is that a Bug? >