FIX: C1001 on Cast to Base from Derived Friend Class

MORE INFORMATION

Sample Code to Reproduce Problem

  /* Compile options needed: /GX
   */ 

   class  Cbase {
      friend class Cfriend;
   public:
      ~Cbase( void ) {}
   };


   class Cfriend : public Cbase {};

   void f(Cbase z){}
   //   Workaround 1,pass by reference instead of by value
   //void f(Cbase& z) {}

   void main() {
      Cfriend P;
      // INTERNAL COMPILER ERROR on the following line
      f((Cbase)P);
   //   Workaround 2, do not use a cast.
   //   f(P);
   };