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Q81546: PRB: Segment Was Discardable Under 3.0 Notification

Article: Q81546
Product(s): Microsoft Windows Software Development Kit
Version(s): WINDOWS:3.1
Operating System(s): 
Keyword(s): kb16bitonly
Last Modified: 06-NOV-1999

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The information in this article applies to:

- Microsoft Windows Software Development Kit (SDK) 3.1 
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SYMPTOMS
========

The debugging version of Microsoft Windows version 3.1 writes the following
notification to the debugging terminal:

  Segment was discardable under 3.0

CAUSE
=====

One or more code segments of a dynamic-link library (DLL) are marked MOVEABLE
and are not marked DISCARDABLE.

RESOLUTION
==========

Modify the module definition (.DEF) file for the DLL to mark all MOVEABLE code
segments as DISCARDABLE.

MORE INFORMATION
================

Under Windows version 3.0, MOVEABLE code segments in a DLL are DISCARDABLE by
default. This behavior changes under Windows 3.1; segments must be marked
DISCARDABLE to be discarded. The debug notification highlights the change in
behavior between the two versions of Windows.

Additional query words: 3.10 no32bit

======================================================================
Keywords          : kb16bitonly 
Technology        : kbAudDeveloper kbWin3xSearch kbSDKSearch kbWinSDKSearch kbWinSDK310
Version           : WINDOWS:3.1

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