DOCUMENT:Q150291 03-AUG-2001 [visualc] TITLE :BUG: Empty File Name in PrivateProfile APIs Returns True PRODUCT :Microsoft C Compiler PROD/VER:4.00 | 4.00 OPER/SYS: KEYWORDS:kbHWMAC kbVCkbbuglist ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual C++, Macintosh Cross-Development Addon, version 4.0, on platform(s): - the operating system: Mac OS (all) ------------------------------------------------------------------------------- SYMPTOMS ======== WritePrivateProfileString() and GetPrivateProfileString() return TRUE when using an empty string as the file name parameter. They should fail and return FALSE when there is no cached file name value. CAUSE ===== When you pass an empty string ("") as the file name parameter to either WritePrivateProfileString() or GetPrivateProfileString(), the Windows Portability Library (WPL) incorrectly matches the empty string with the empty invalid cached file name. The invalid cache entry contains an invalid refNum (-1). RESOLUTION ========== Do not pass an empty string as the file name parameter. Use the fully qualified name instead. STATUS ====== Microsoft has confirmed this to be a bug in 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. Additional query words: 4.00 10.00 ====================================================================== Keywords : kbHWMAC kbVC kbbuglist Technology : kbVCsearch kbHWMAC kbOSMAC kbAudDeveloper Version : 4.00 | 4.00 ============================================================================= 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 2001.