Microsoft KB Archive/835774

= FIX: Incorrect destination results are produced when you use the memcpy function or the memmove function =

Article ID: 835774

Article Last Modified on 5/27/2005

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APPLIES TO


 * Microsoft Windows CE .NET 4.2

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SYMPTOMS
The memcpy function and the memmove function may produce incorrect destination results on ARM920T-based microprocessors.

Sometimes, when you are working with menus and icons, areas of incorrectly colored pixels appear on video display output.



CAUSE
This problem occurs because the Logical Disk Manager (LDM) does not work correctly in some revisions of the ARM 920T processor core. This problem may also occur on the ARM922T processor core.

This problem may be caused in the Microsoft Windows CE implementation of the memcpy function and the memmove function by the use of hand coded assembly language.



Hotfix Information
A supported software update is now available from Microsoft as Windows CE 4.2 Core OS QFE 835774. To resolve this problem immediately, click the following article number for information about obtaining Windows CE Platform Builder and core operating system software updates:

837392 How to locate core operating system fixes for Microsoft Windows CE Platform Builder products

Prerequisites
This fix is supported only when all previously issued fixes for this product have also been installed.

Restart Requirement
After you install this update, you must clean and build the whole platform. You do not have to restart your computer after you apply this fix.

Hotfix Replacement Information
This fix does not replace any other fixes.

File Information
The English version of this package has the file attributes (or later) that are listed in the following table.   Date         Time   Version            Size    File name ---  16-Mar-2004  23:50  4.2.4.316       2,484,976  Wincepb42-040316-kb835774-armv4.exe 16-Mar-2004 23:50  4.2.4.316       2,489,072  Wincepb42-040316-kb835774-armv4i.exe The English version of this hotfix has the file attributes (or later) that are listed in the following table. The dates and times for these files are listed in coordinated universal time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time tool in Control Panel.   Date         Time   Version            Size    File name --

Path: Public\Common\Oak\Lib\ARMV4\Debug 06-Mar-2004 01:36                  1,347,078  Ccrtcrtw.lib 06-Mar-2004 01:36                     43,702  Ccrtstrg.lib 06-Mar-2004 01:36                  1,779,252  Corecrt.lib 06-Mar-2004 01:36                  1,855,204  Fulllibc.lib

Path: Public\Common\Oak\Lib\ARMV4\Retail 06-Mar-2004 01:34                  1,154,358  Ccrtcrtw.lib 06-Mar-2004 01:34                     42,500  Ccrtstrg.lib 06-Mar-2004 01:35                  1,563,660  Corecrt.lib 06-Mar-2004 01:35                  1,638,470  Fulllibc.lib

Path: Public\Common\Oak\Lib\ARMV4I\Debug 06-Mar-2004 01:39                  1,349,986  Ccrtcrtw.lib 06-Mar-2004 01:39                     43,882  Ccrtstrg.lib 06-Mar-2004 01:39                  1,783,406  Corecrt.lib 06-Mar-2004 01:39                  1,861,906  Fulllibc.lib

Path: Public\Common\Oak\Lib\ARMV4I\Retail 06-Mar-2004 01:37                  1,157,146  Ccrtcrtw.lib 06-Mar-2004 01:37                     42,676  Ccrtstrg.lib 06-Mar-2004 01:37                  1,567,756  Corecrt.lib 06-Mar-2004 01:37                  1,645,146  Fulllibc.lib



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section of this article.



MORE INFORMATION
For additional information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbbug kbfix kbqfe KB835774

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