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Article ID: 119279 - Last Review: December 27, 2014 - Revision: 2.0

This article was previously published under Q119279
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If a header file (also known as an include file) does not exist, the way it appears in the source file determines whether it is included as a dependency. The file is included if it has a "\" or a "/" in its file specification. Additionally there is no warning that the file does not exist when a dependency scan is done.


Adding the filename to the SYSINCL.DAT file (if you are using Visual C++ for Windows, versions 1.0 and 1.5) or to the MSVCINCL.DAT file (if you are using Visual C++ for Windows NT, version 1.0) then restarting Visual C++ prevents the file from being included in the project. SYSINCL.DAT resides in the \MSVC\BIN directory. MSVCINCL.DAT can be found in the Windows or Windows NT directory.


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.


The following TEST.H files are included as a dependency in the project's makefile.

Sample Code

   #include ".\test.h"
   #include "abc$def/test.h"

  • The Visual Workbench Integrated Debugger, when used with:
    • Microsoft Visual C++ 1.0 Professional Edition
    • Microsoft Visual C++ 1.5 Professional Edition
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