KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q152016: FIX: Errors C2065/C2064 When Function L is Called with Macro

Article: Q152016
Product(s): Microsoft C Compiler
Version(s): 4.1,4.2
Operating System(s): 
Keyword(s): kbProgramming kbCompiler kbLangCPP kbVC kbVC410bug kbVC420bug kbVC500fix
Last Modified: 04-AUG-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual C++, versions 4.1, 4.2 
-------------------------------------------------------------------------------

SYMPTOMS
========

Compiling a program that calls the function "L" using a macro will cause the
following errors:

  error C2065: 'x' : undeclared identifier

  error C2064: term does not evaluate to a function

where "x" is the last letter of the macro identifier.

CAUSE
=====

In this case, the preprocessor incorrectly generates the letter "x" as the
resulting output.

RESOLUTION
==========

Use any other letter after "L" in the macro body.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug was corrected in Visual C++ version 5.0.

MORE INFORMATION
================

Sample Code
-----------

     /* Compile options needed:
     */ 
         #define thing L

         void  L() {}

         void main (void) {
            thing();
         };

Additional query words:

======================================================================
Keywords          : kbProgramming kbCompiler kbLangCPP kbVC kbVC410bug kbVC420bug kbVC500fix 
Technology        : kbVCsearch kbAudDeveloper kbVC410 kbVC420
Version           : :4.1,4.2
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.