Q119161: FIX: Dependencies May Not Be Detected

Article: Q119161
Product(s): Microsoft C Compiler
Version(s): WINDOWS:1.0
Operating System(s): 
Keyword(s): kbide kbVCkbbuglist kbfixlist
Last Modified: 25-JUL-2001

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

- Microsoft Visual Workbench for Windows, version 1.0, used with:
   - Microsoft Visual C++, versions 1.0, 1.5 
   - *EDITOR Please do not choose this product*Microsoft Visual C++ 32-bit Edition* use 241, 265, 225, version 1.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

When a project includes header files that include each other, not all of the
dependencies are detected. This can cause the Visual Workbench to report that a
source file is up to date when it is not up to date.

RESOLUTION
==========

You may need to include some header files directly in the source file instead of
in a header file. Please see the "MORE INFORMATION" section, below, for details.

STATUS
======

Microsoft has confirmed this to be a bug in the products listed at the beginning
of this article. This problem was corrected in Visual C++ version 2.0.

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

Situation 1
-----------

The problem can be seen in the following situation:

  // sample1.cpp

     #include "sample1.h"

  // sample2.cpp

     #include "sample2.h"

  // sample1.h

     #ifndef _SAMPLE1_H
     #define _SAMPLE1_H
     #include "sample2.h"
     #include "test1.h"
     #endif

  // sample2.h

     #ifndef _SAMPLE2_H
     #define _SAMPLE2_H
     #include "sample1.h"
     #include "test2.h"
     #endif

  // test1.h
  // nothing required for this sample.

  // test2.h
  // nothing required for this sample.

The dependencies generated for this .MAK file will be as follows:

     SAMPLE1_DEP = \ 
         c:\sample\sample1.h
         c:\sample\sample2.h
         c:\sample\test2.h
         c:\sample\test1.h

     SAMPLE2_DEP = \ 
         c:\sample\sample2.h
         c:\sample\sample1.h
         c:\sample\test2.h

  SAMPLE2_DEP should also include c:\sample\test1.h

Situation 2
-----------

The correct dependencies are generated when you make the following changes:

  // sample1.cpp

     #include "test2.h"
     #include "sample1.h"

  // sample2.cpp

     #include "test1.h"
     #include "sample2.h"

  // All other files are unchanged.

Additional query words: 1.00 1.50 1.10

======================================================================
Keywords          : kbide kbVC kbbuglist kbfixlist
Technology        : kbVSsearch kbAudDeveloper
Version           : WINDOWS:1.0
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.

Copyright Microsoft Corporation 1986-2002.