FIX: C2243 on Friend Overload o

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Sample Code

   /* Compile options needed: None
   */ 
   #include <iostream.h>
   template<class T>
   class Base;
   template<class T>
   ostream& operator<<(ostream& s, const Base<T> & a)
   {
      return s;
   }
   template<class T>
   class Base
   {
   public:
      friend ostream& operator<<(ostream& s, const Base<T>& a);
   };
   class Derived;
   ostream& operator<<(ostream& s, const Derived& a)
   {
      return s;
   }
   // Replace 'private' by 'public' in the following line
   // to avoid the error (work around # 2)
   class Derived : private Base<char> {
   public:
      friend ostream& operator<<(ostream& s, const Derived& a);
   };
   void main(void)
   {
      Derived objDerived;
      // The C2243 error is generated for the following line.
      // Uncomment the typecast to avoid the error (work around # 1)
      cout << /*(const Derived&)*/ objDerived;
   }