FIX: Calling code in the unwind.cpp file causes an application to crash in Windows Embedded Compact 7

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Introduction

This article describes an issue in which calling code in the unwind.cpp file causes an application to crash in Windows Embedded Compact 7. An update is available to resolve this issue. Before you install this update, all previously issued updates for this product must be installed.

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Symptoms

When you call the following code in the Unwind.cpp file in a Windows Embedded Compact 7 application, the address reference that is generated in the code (Address = READ_DATA_ULONG(ProcessId, Register[RegIndex] + (Opcode & 0xfff));) points to an invalid address area and causes the application to crash.

Unwind.cpp code

static BOOL ArmWalkEpilog(
    __in ULONG          PrologBeginAddress,
    __in ULONG          EpilogPc,
    __in ULONG          MaxEpilogBytes,
    __in CONTEXT *      ContextRecord,
    __in PROCESSID_T    ProcessId
    )

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Resolution

Software update information

A supported software update is now available from Microsoft as Windows Embedded Compact 7 Monthly Update (May 2015).

Note This Windows Embedded Compact 7 Monthly Update is available for download from the following Microsoft Download Center website:

Windows Embedded Compact 7 Updates

Prerequisites

This update is supported only if all previously issued updates for this product have also been installed.

Restart requirement

After you apply this update, you must perform a clean build of the whole platform. To do this, use one of the following methods:

On the Build menu, click Clean Solution, and then click Build Solution.
On the Build menu, click Rebuild Solution.

You do not have to restart the computer after you apply this software update.

Update replacement information

This update does not replace any other updates.

File information

The English version of this software update package has the file attributes (or later file attributes) 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 item in Control Panel.

Files that are included in this update package

File name	File size	Date	Time	Path
Unwind.cpp	146,120	27-Apr-2015	19:18	Private\Winceos\Coreos\Core\Dll\Arm
Coremain.lib	1,216,586	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii\Checked
Kcoremain.lib	1,109,628	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii\Checked
Coremain.lib	1,079,606	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii\Retail
Kcoremain.lib	1,017,654	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii\Retail
Coremain.lib	1,364,534	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii\Debug
Kcoremain.lib	1,242,752	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii\Debug
Coremain.lib	1,289,906	05-May-2015	05:18	Public\Common\Oak\Lib\Armv6\Checked
Kcoremain.lib	1,176,004	05-May-2015	05:18	Public\Common\Oak\Lib\Armv6\Checked
Coremain.lib	1,164,376	05-May-2015	05:18	Public\Common\Oak\Lib\Armv6\Retail
Kcoremain.lib	1,096,356	05-May-2015	05:18	Public\Common\Oak\Lib\Armv6\Retail
Coremain.lib	1,442,196	05-May-2015	05:17	Public\Common\Oak\Lib\Armv6\Debug
Kcoremain.lib	1,313,226	05-May-2015	05:17	Public\Common\Oak\Lib\Armv6\Debug
Coremain.lib	1,086,896	05-May-2015	05:17	Public\Common\Oak\Lib\X86\Checked
Kcoremain.lib	986,936	05-May-2015	05:17	Public\Common\Oak\Lib\X86\Checked
Coremain.lib	949,118	05-May-2015	05:17	Public\Common\Oak\Lib\X86\Retail
Kcoremain.lib	894,854	05-May-2015	05:17	Public\Common\Oak\Lib\X86\Retail
Coremain.lib	1,131,578	05-May-2015	05:17	Public\Common\Oak\Lib\X86\Debug
Kcoremain.lib	1,027,722	05-May-2015	05:17	Public\Common\Oak\Lib\X86\Debug
Coremain.lib	1,123,768	05-May-2015	05:17	Public\Common\Oak\Lib\Sh4\Checked
Kcoremain.lib	1,027,352	05-May-2015	05:17	Public\Common\Oak\Lib\Sh4\Checked
Coremain.lib	1,019,412	05-May-2015	05:17	Public\Common\Oak\Lib\Sh4\Retail
Kcoremain.lib	962,594	05-May-2015	05:17	Public\Common\Oak\Lib\Sh4\Retail
Coremain.lib	1,248,922	05-May-2015	05:18	Public\Common\Oak\Lib\Sh4\Debug
Kcoremain.lib	1,141,584	05-May-2015	05:18	Public\Common\Oak\Lib\Sh4\Debug
Coremain.lib	1,218,244	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii_fp\Checked
Kcoremain.lib	1,111,442	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii_fp\Checked
Coremain.lib	1,081,430	05-May-2015	05:18	Public\Common\Oak\Lib\Mipsii_fp\Retail
Kcoremain.lib	1,019,318	05-May-2015	05:18	Public\Common\Oak\Lib\Mipsii_fp\Retail
Coremain.lib	1,366,294	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii_fp\Debug
Kcoremain.lib	1,244,546	05-May-2015	05:17	Public\Common\Oak\Lib\Mipsii_fp\Debug
Coremain.lib	1,279,004	05-May-2015	05:18	Public\Common\Oak\Lib\Armv7\Checked
Kcoremain.lib	1,166,664	05-May-2015	05:18	Public\Common\Oak\Lib\Armv7\Checked
Coremain.lib	1,154,132	05-May-2015	05:18	Public\Common\Oak\Lib\Armv7\Retail
Kcoremain.lib	1,087,494	05-May-2015	05:18	Public\Common\Oak\Lib\Armv7\Retail
Coremain.lib	1,432,188	05-May-2015	05:17	Public\Common\Oak\Lib\Armv7\Debug
Kcoremain.lib	1,304,686	05-May-2015	05:17	Public\Common\Oak\Lib\Armv7\Debug
Coremain.lib	1,289,760	05-May-2015	05:17	Public\Common\Oak\Lib\Armv5\Checked
Kcoremain.lib	1,175,858	05-May-2015	05:17	Public\Common\Oak\Lib\Armv5\Checked
Coremain.lib	1,164,240	05-May-2015	05:18	Public\Common\Oak\Lib\Armv5\Retail
Kcoremain.lib	1,096,220	05-May-2015	05:18	Public\Common\Oak\Lib\Armv5\Retail
Coremain.lib	1,442,288	05-May-2015	05:17	Public\Common\Oak\Lib\Armv5\Debug
Kcoremain.lib	1,313,252	05-May-2015	05:17	Public\Common\Oak\Lib\Armv5\Debug
Coredll.exp	291,856	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii\Checked
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii\Checked
Coredll.exp	291,753	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii\Retail
Coredll.lib	395,808	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii\Retail
Coredll.exp	291,854	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii\Debug
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii\Debug
Coredll.exp	292,573	05-May-2015	05:18	Public\Common\Exp\Lib\Armv6\Checked
Coredll.lib	395,978	05-May-2015	05:18	Public\Common\Exp\Lib\Armv6\Checked
Coredll.exp	292,470	05-May-2015	05:18	Public\Common\Exp\Lib\Armv6\Retail
Coredll.lib	395,808	05-May-2015	05:18	Public\Common\Exp\Lib\Armv6\Retail
Coredll.exp	292,571	05-May-2015	05:17	Public\Common\Exp\Lib\Armv6\Debug
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Armv6\Debug
Coredll.exp	295,287	05-May-2015	05:17	Public\Common\Exp\Lib\X86\Checked
Coredll.lib	405,346	05-May-2015	05:17	Public\Common\Exp\Lib\X86\Checked
Coredll.exp	295,187	05-May-2015	05:17	Public\Common\Exp\Lib\X86\Retail
Coredll.lib	405,170	05-May-2015	05:17	Public\Common\Exp\Lib\X86\Retail
Coredll.exp	295,285	05-May-2015	05:17	Public\Common\Exp\Lib\X86\Debug
Coredll.lib	405,346	05-May-2015	05:17	Public\Common\Exp\Lib\X86\Debug
Coredll.exp	301,290	05-May-2015	05:17	Public\Common\Exp\Lib\Sh4\Checked
Coredll.lib	406,204	05-May-2015	05:17	Public\Common\Exp\Lib\Sh4\Checked
Coredll.exp	301,186	05-May-2015	05:17	Public\Common\Exp\Lib\Sh4\Retail
Coredll.lib	406,028	05-May-2015	05:17	Public\Common\Exp\Lib\Sh4\Retail
Coredll.exp	301,288	05-May-2015	05:18	Public\Common\Exp\Lib\Sh4\Debug
Coredll.lib	406,204	05-May-2015	05:18	Public\Common\Exp\Lib\Sh4\Debug
Coredll.exp	289,053	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii_fp\Checked
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii_fp\Checked
Coredll.exp	288,950	05-May-2015	05:18	Public\Common\Exp\Lib\Mipsii_fp\Retail
Coredll.lib	395,808	05-May-2015	05:18	Public\Common\Exp\Lib\Mipsii_fp\Retail
Coredll.exp	289,051	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii_fp\Debug
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Mipsii_fp\Debug
Coredll.exp	292,569	05-May-2015	05:18	Public\Common\Exp\Lib\Armv7\Checked
Coredll.lib	395,978	05-May-2015	05:18	Public\Common\Exp\Lib\Armv7\Checked
Coredll.exp	292,470	05-May-2015	05:18	Public\Common\Exp\Lib\Armv7\Retail
Coredll.lib	395,808	05-May-2015	05:18	Public\Common\Exp\Lib\Armv7\Retail
Coredll.exp	292,571	05-May-2015	05:17	Public\Common\Exp\Lib\Armv7\Debug
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Armv7\Debug
Coredll.exp	292,573	05-May-2015	05:18	Public\Common\Exp\Lib\Armv5\Checked
Coredll.lib	395,978	05-May-2015	05:18	Public\Common\Exp\Lib\Armv5\Checked
Coredll.exp	292,470	05-May-2015	05:18	Public\Common\Exp\Lib\Armv5\Retail
Coredll.lib	395,808	05-May-2015	05:18	Public\Common\Exp\Lib\Armv5\Retail
Coredll.exp	292,571	05-May-2015	05:17	Public\Common\Exp\Lib\Armv5\Debug
Coredll.lib	395,978	05-May-2015	05:17	Public\Common\Exp\Lib\Armv5\Debug