Calling EnumObjects() Leaks a Selector

ID: Q229670

The information in this article applies to:

Microsoft Windows 98
Microsoft Windows 95

SYMPTOMS

A program that calls the Win32 EnumObjects() API function may eventually stop working, with the following error message:

Program name caused a General Protection Fault in module GDI.EXE.

CAUSE

The EnumObjects() function leaks a selector each time it is called. If enough calls are made during a particular session, the local descriptor table (LDT) can become exhausted. The computer must then be restarted.

RESOLUTION

A supported fix that corrects this problem is now available from Microsoft, but it has not been fully regression tested and should be applied only to systems experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information on support costs, please go to the following address on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

The English version of this fix should have the following file attributes or later:


For Windows 95 versions 4.00.950 and 4.00.950A (Retail and OEM Service Release [OSR1]):

   Date       Time      Version    Size      File name
   ----------------------------------------------------
   04/16/99   10:11am   4.01.971   312,736   Gdi.exe
   04/16/99   10:11am   4.01.971   131,072   Gdi32.dll

For Windows 95 versions 4.00.950B and 4.00.950C (OSR2 and OSR2.5):

   Date       Time      Version     Size      File name
   -----------------------------------------------------
   04/16/99   11:12am   4.00.1112   331,872   Gdi.exe
   04/16/99   11:12am   4.00.1112   129,024   Gdi32.dll

For Windows 98 versions 4.10.1998 (Retail):

   Date       Time     Version     Size      File name
   ---------------------------------------------------
   08/20/99   7:16pm   4.10.1999   345,632   Gdi.exe
   08/20/99   8:03pm   4.10.1999   138,752   Gdi32.dll

For Windows 98 SE version 4.10.2222 (Second Edition):

   Date       Time      Version     Size      File name
   ----------------------------------------------------
   08/20/99   03:51pm   4.10.2223   345,648   Gdi.exe
   08/20/99   05:27pm   4.10.2223   138,752   Gdi32.dll

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

MORE INFORMATION

One situation in which this problem can occur is when a Microsoft Excel 97 VBA macro sets the PageSetup properties of a worksheet object hundreds of times. For additional information about this problem, please see the following article in the Microsoft Knowledge Base:

Q192869 OFF97: PageSetup Object Causes Memory Leak and Hangs System

Additional query words:

Keywords : win95 win98
Version : WINDOWS:95
Platform : WINDOWS
Issue type : kbprb