FIX: Missing '::' in Error C2579 for Ambiguous Overload

The information in this article applies to:

• The Microsoft C/C++ Compiler (CL.EXE) included with: Microsoft Visual C++, 32-bit Edition, versions 2.0 and 2.1

SYMPTOMS

A member function that is an ambiguous overload of another member function of the class causes the compiler to generate a correct C2579 error message to indicate that the parameter list is not sufficiently different to overload the function. This behavior is as it should be.

However, in the error message, the scope resolution operator (::) is missing between the class name and the function name used to indicate the problem. For example, compiling the sample code shown in article causes the compiler to generate this error :

   error C2579: 'TestClassTestFunc(int)' : parameter list not
                sufficiently different from
                'TestClassTestFunc(const int)'

   error C2579: 'TestClass::TestFunc(int)' : parameter list not
                sufficiently different from
                'TestClass::TestFunc(const int)'

NOTE: In Visual C++ 4.0, the text message of error C2579 has been corrected. It now appears as follows:

   error C2579: '<function_name>(<parameter_list1>)' :
      parameter list not sufficiently different from
      '<function_name>(<parameter_list2>)'

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This problem was corrected in Microsoft Visual C++, 32-bit Edition, version 4.0.

MORE INFORMATION

Sample Code to Demonstrate Problem

/* Compiler Options: /c
*/

 public:
     void TestFunc(const int i) {};
     void TestFunc(int i) {};       // Expecting C2579
};