Q104638: FIX: CFile::SetStatus Throws Exception When Setting Time

Article: Q104638
Product(s): Microsoft C Compiler
Version(s): 1.0
Operating System(s): 
Keyword(s): kbFileIO kbMFC kbVC
Last Modified: 22-JUL-2001

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The information in this article applies to:

- The Microsoft Foundation Classes (MFC), included with:
   - Microsoft Visual C++, 32-bit Editions, version 1.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

An attempt to set the status of a file using the function CFile::SetStatus
results in a CFileException. If you do not have an exception handler defined,
the result will depend on what the target type for the application is:

- If it is a Win32-based application, a modal dialog box will pop up that says
  the command failed.

- If running a console application, you will see output similar to:

  CFile exception: generic, OS error information = 1812 Warning: Throwing an
  Exception of type CFileException Error: Un-caught Exception (CFileException)
  AfxTerminate called AfxAbort called

  abnormal program termination

CAUSE
=====

This behavior occurs whenever the CFileStatus member m_mtime is nonzero. There
is a coding problem that incorrectly throws an exception when updating the file
time.

The following console application duplicates this error:

     /* Build as a console application using
     ** Microsoft Foundation Classes
     ** Be sure that TEMP.DAT file exists in the same directory.
     */ 
     #include <afx.h>
     CFileStatus fs;
     void main(void) {
       CFile::GetStatus("TEMP.DAT",fs);
       CFile::SetStatus("TEMP.DAT",fs);
     }

RESOLUTION
==========

To work around this problem, update the Microsoft Foundation Class (MFC) library
files by making a modification to the MFC source file FILEST.CPP. Remove the
semicolon from the end of the "if" statement in line 134:

Change the following:

     if (!SystemTimeToFileTime((LPSYSTEMTIME)&sysTime, pFileTime));

to the following:

     if (!SystemTimeToFileTime((LPSYSTEMTIME)&sysTime, pFileTime))

You must then rebuild the MFC libraries. For more information on building these
library files, refer to:

- Appendix B of the online "Class Library User's Guide"

-or-

- The README.TXT file in the MSVC\MFC\SRC directory

Here are two ways to build a debug and non-debug version of the MFC Library for
Windows NT:

Run the NMAKE command from the \MSVCNT\MFC\SRC directory.

The debug version:

     NMAKE MODEL=N TARGET=W DEBUG=1 CODEVIEW=2

The release version:

     NMAKE MODEL=N TARGET=W DEBUG=0

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 Microsoft Visual C++ 32-bit
Edition, version 2.0.

Additional query words:

======================================================================
Keywords          : kbFileIO kbMFC kbVC 
Technology        : kbAudDeveloper kbMFC
Version           : 1.0
Issue type        : kbbug
Solution Type     : kbfix

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