BUG: C2511 Error on Member Function with Unknown Parameter

• Microsoft C/C++ Compiler (CL.EXE), included with:
  • Microsoft C/C++ for MS-DOS, version 7.0
  • Microsoft Visual C++ for Windows, versions 1.0, 1.5, 1.51
  • Microsoft Visual C++ 32-bit Edition, versions 1.0, 2.0

SYMPTOMS

Class functions defined using an unknown data type as a parameter will cause the C/C++ compiler to generate the following incorrect error:

error C2511: 'Reg' : overloaded member function not found in 'Test'

RESOLUTION

There are two possible workarounds to this problem. Using the Sample Code below, you would:

• Make the function inline by placing the executable code in the class definition, as in this example:

  
        class MyClass
        {
           int Reg(const int *a, struct T *t) {return 0;};
        }; 



-or-


• Define the unknown data type before the class definition, as in this example:

  
        struct T
        {
           int q;
        };
  
        class Test
        {
           int Reg(const int *a, struct T *t);
        };
  
        int Test::Reg(const int *a, struct T *t)
        {
           return 0;
       } 

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

/* Compile options needed: none
*/ 

class Test
{
   int Reg(const int *a, struct T *t);
};

int Test::Reg(const int *a, struct T *t)
{
   return 0;
} 

Additional query words: 7.00 8.00 8.00c 9.00 1.00 1.50 1.51 2.00 buglist1.51 buglist2.00

Keywords : kbCompiler kbCPPonly kbVC
Version : :1.0,1.5,1.51,2.0
Platform : MS-DOS NT WINDOWS
Issue type :