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Q106077: BUG: System-Wide WH_DEBUG Hook Causes a GP Fault

Article: Q106077
Product(s): Microsoft Windows Software Development Kit
Version(s): WINDOWS:
Operating System(s): 
Keyword(s): kb16bitonly kbHook kbGrpDSUser kbOSWin310bug
Last Modified: 05-NOV-1999

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The information in this article applies to:

- Microsoft Windows Software Development Kit (SDK) 
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SYMPTOMS
========

Installing a system-wide hook of WH_DEBUG type causes a general protection (GP)
fault in the Windows SDK version 3.1.


CAUSE
=====

WH_DEBUG hooks are called before calling any other hooks in the system. The bug
occurs if at least one system-wide hook is present in the system. (Shell
installs one such system-wide hook.) In the process of reporting the system-wide
hook to the debug hook, the GP-fault occurs.

STATUS
======

Microsoft has confirmed this to be a bug in Microsoft Windows version 3.1. This
problem is scheduled to be corrected in the next version.


Additional query words:

======================================================================
Keywords          : kb16bitonly kbHook kbGrpDSUser kbOSWin310bug 
Technology        : kbAudDeveloper kbSDKSearch kbWinSDKSearch
Version           : WINDOWS:
Issue type        : kbbug

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