FIX: You receive error message when a "using namespace std" directive is placed before friend operator

MORE INFORMATION

Test1.cpp reproduces the C2248 error in case 1

   // test1.cpp
   // Compiler options needed: cl /c /GX
   #include <iostream>

   using namespace std;

   #ifdef WORKAROUND
   class CMyClass;
   ostream& operator <<(ostream &, const CMyClass &);
   #endif // WORKAROUND

   class CMyClass
   {
   public:

     friend ostream& operator <<(ostream &, const CMyClass &);
     // An alternative workaround is to define the operator in the
     // class declaration. In this case it is not necessary to forward
     // declare the class and friend function.

   private:

      int value;
   };

   ostream& operator <<(ostream& out, const CMyClass& m)
   {

      int i = m.value;  // C2248 Error
      return out;
   }

   void main()
   { }
				

Test2.cpp reproduces the C1001 error in case 2

   // test2.cpp
   // Compiler options needed: cl /c /GX
   #include <iostream>

   using namespace std;

   #ifdef WORKAROUND
   int operator+(int, const class &);
   #endif // WORKAROUND

   class CMyClass
   {
   public:

     friend int operator+(int, const CMyClass &);  // C1001 Error.

   };

   void main()
   { }