Scoping bug in gcc 4.0.1

[Jon BLOOMFIELD <Jon dot BLOOMFIELD at 3dlabs dot com>]

Hi,

Can somebody tell me whether there is a known bug in g++ 4.0.1 wrt scoping
of members of a template base class. The following contrived test case
generates a compiler error on 4.0.1, complaining that 'a' is not in the
scope scope of D<T>::f()


   template<class C> class T
   {
   protected:
     bool  a;
   };

   template <class C> class D : public T<C>
   {
   public:
     void f(void)
     {
       a = true;
     }
   };

   int main()
   {
     D<int> i;
     i.f();

     return 0;
   }

   s.cxx: In member function 'void D<T>::f()':
   s.cxx:12: error: 'a' was not declared in this scope


This code was accepted just fine on gcc 3.2.3, so could be a new bug, or a
deliberate change to the scoping rules ?

Thanks,

Jon Bloomfield
Architect
3Dlabs UK Ltd

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