On 10/12/2005 10:52 AM, Robert Kawulak wrote: [snip]
current policies). Is there any workaround for this (IOW is there any way to make inheritance of empty classes not make sizeof grow)? Of course composition instead of inheritance is a no-go, because it always makes
By "composition" (of f, for example) do you mean: // A class inherited from empty base classes, with a char member struct g { f a_f; char c; }; ?
sizeof bigger. Is it worth to add this functionality to the constrained type even though with some compilers its size will grow?
The policy_ptr library in sandbox used to have something that could test whether a base class was empty and eliminate it from the inheritance. I think the template class used was already somewhere in boost. Looking... Yes. A copy is at: http://cvs.sourceforge.net/viewcvs.py/boost-sandbox/boost-sandbox/boost/mana... HTH.