BUG: Compiler Incorrectly Decorates C++ Operators

The information in this article applies to:

• The 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 and
        1.52
  

SYMPTOMS

The Microsoft C++ Compiler for MS-DOS, versions 8.0 and 8.0c, gives class operators incorrect function signatures. This does not cause compiler or linker errors to be generated, but it does, however, cause problems when you try to debug the application. Specifically, CodeView is unable to find the function by means of the Label/Function option on the Search menu.

STATUS

Microsoft has confirmed this to be a bug with the Microsoft products listed at the beginning of this article. We are researching this problem and will post new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION

To view this problem, use the following steps:

1. Type in the sample code shown below.

2. After compiling the application, start CodeView to debug the application.

3. In CodeView, choose the Label/Function option from the Search menu.

4. Type in "testclass::int" (without the quotes) and press Return. CodeView will display a dialog box saying "unknown symbol".

Sample Code

/* Compile options needed: /Zi /Od
*/
   #include <stdio.h>

   struct testclass
   {
      int i;
      operator int() { return i; };
   };

   void test(int i)
   {
      printf("%d\n",i);
   }

   void main()
   {
      testclass f;
      f.i = 13;
      test(f);
   }