Microsoft KB Archive/831671

= A data alignment exception occurs in DCOM on a MIPS IV FP-based system =

Article ID: 831671

Article Last Modified on 5/27/2005

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APPLIES TO


 * Microsoft Windows CE .NET 4.1

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SYMPTOMS
When a program uses distributed component object model (DCOM) services on Microsoft Windows CE operating systems that are based on the MIPS IV FP microprocessor, an exception may occur.

Debug information shows that the exception occurs in the PingServer function call.



CAUSE
This problem occurs because the calculation of a pointer into an allocation may cause a pointer not to be aligned on an 8-byte boundary. Alignment varies among microprocessors, as follows:
 * On the MIPS IV FP microprocessor, data access must be aligned to 64-bit (8-byte) boundaries.
 * On most other microprocessors that are supported by Windows CE, data access must be aligned to 32-bit (4-byte) boundaries.



Hotfix Information
A supported software update is now available from Microsoft as Windows CE 4.1 Core OS QFE 031219_KB831671. 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 apply this update, you must perform a clean operation and then rebuild the platform.

Hotfix Replacement Information
This hotfix does not replace any other hotfixes.

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 --

19-Dec-2003 23:25  4.10            1,063,664  Wincepb41-031219-kb831671-armv4.exe 19-Dec-2003 23:25  4.10            1,063,664  Wincepb41-031219-kb831671-armv4i.exe 19-Dec-2003 23:25  4.10            1,059,568  Wincepb41-031219-kb831671-armv4t.exe 19-Dec-2003 23:25  4.10            1,039,088  Wincepb41-031219-kb831671-mips16.exe 19-Dec-2003 23:25  4.10            1,071,856  Wincepb41-031219-kb831671-mipsii.exe 19-Dec-2003 23:25  4.10            1,071,856  Wincepb41-031219-kb831671-mipsii_fp.exe 19-Dec-2003 23:25  4.10            1,075,952  Wincepb41-031219-kb831671-mipsiv.exe 19-Dec-2003 23:25  4.10            1,075,952  Wincepb41-031219-kb831671-mipsiv_fp.exe 19-Dec-2003 23:25  4.10            1,047,280  Wincepb41-031219-kb831671-sh3.exe 19-Dec-2003 23:25  4.10            1,047,280  Wincepb41-031219-kb831671-sh4.exe 19-Dec-2003 23:25  4.10            1,002,224  Wincepb41-031219-kb831671-x86.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\Dcom\Oak\Lib\Armv4\Debug 15-Dec-2003 23:47                    712,536  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Armv4\Retail 15-Dec-2003 23:46                    380,662  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Armv4i\Debug 15-Dec-2003 23:46                    714,506  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Armv4i\Retail 15-Dec-2003 23:46                    381,996  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Armv4t\Debug 15-Dec-2003 23:46                    673,516  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Armv4t\Retail 15-Dec-2003 23:46                    377,108  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mips16\Debug 15-Dec-2003 23:47                    652,012  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mips16\Retail 15-Dec-2003 23:47                    335,928  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsii\Debug 15-Dec-2003 23:47                    736,746  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsii\Retail 15-Dec-2003 23:47                    384,150  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsii_fp\Debug 15-Dec-2003 23:47                    736,962  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsii_fp\Retail 15-Dec-2003 23:47                    384,364  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsiv\Debug 15-Dec-2003 23:48                    740,592  Objex.lib 15-Dec-2003 23:48                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsiv\Retail 15-Dec-2003 23:48                    386,084  Objex.lib 15-Dec-2003 23:48                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsiv_fp\Debug 15-Dec-2003 23:47                    740,808  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Mipsiv_fp\Retail 15-Dec-2003 23:47                    386,298  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Sh3\Debug 15-Dec-2003 23:47                    645,194  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Sh3\Retail 15-Dec-2003 23:47                    349,668  Objex.lib 15-Dec-2003 23:47                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Sh4\Debug 15-Dec-2003 23:48                    645,170  Objex.lib 15-Dec-2003 23:48                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\Sh4\Retail 15-Dec-2003 23:48                    349,168  Objex.lib 15-Dec-2003 23:48                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\X86\Debug 15-Dec-2003 23:46                    551,980  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb

Path: Public\Dcom\Oak\Lib\X86\Retail 15-Dec-2003 23:46                    318,828  Objex.lib 15-Dec-2003 23:46                    307,200  Objex.pdb



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

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, regarding the performance or reliability of these products.

Keywords: kbbug kbfix kbqfe KB831671

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