FIX: Silverlight for Windows Embedded application crashes from a memory leak in a custom control of type VTYPE_BSTR in Windows Embedded Compact 7

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Introduction

This article describes an issue that triggers a Silverlight for Windows Embedded application crash from a memory leak in a custom control of type VTYPE_BSTR 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

You have a Silverlight for Windows Embedded application in Windows Embedded Compact 7. If the application creates and registers a custom control as a custom dependency property of type VTYPE_BSTR, a memory leak may occur. Additionally, the memory leak may cause the application to crash.

Examples:

The IXRCustomUserControl::GetPropertyValue() method is called, an XRValue is returned and sets the XRValue.shouldFreeValuePointer variable to False. This causes a break. If you set XRValue.shouldFreeValuePointer = True in your application, this will cause a memory leak.
The GetDependencyProperty method is called, an XRValue is returned and sets the XRValue.shouldFreeValuePointer variable to True. This also causes a memory leak.

These memory leaks eventually cause the application to crash.

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Resolution

Software update information

A supported software update is now available from Microsoft as Windows Embedded Compact 7 Monthly Update (June 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
Xamlruntime.map	1,840,534	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii\Checked
Xamlruntime.rel	2,848,176	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii\Checked
Xamlruntime.dll	1,712,128	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii\Checked
Xamlruntime.map	1,435,946	03-Jul-2015	10:56	Public\Common\Oak\Target\Mipsii\Retail
Xamlruntime.rel	2,322,261	03-Jul-2015	10:56	Public\Common\Oak\Target\Mipsii\Retail
Xamlruntime.dll	1,236,992	03-Jul-2015	10:56	Public\Common\Oak\Target\Mipsii\Retail
Xamlruntime.map	2,462,379	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii\Debug
Xamlruntime.rel	3,905,400	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii\Debug
Xamlruntime.dll	2,523,136	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii\Debug
Xamlruntime.map	1,833,288	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv6\Checked
Xamlruntime.rel	1,763,460	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv6\Checked
Xamlruntime.dll	1,359,872	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv6\Checked
Xamlruntime.map	1,264,169	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv6\Retail
Xamlruntime.rel	1,577,831	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv6\Retail
Xamlruntime.dll	970,752	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv6\Retail
Xamlruntime.map	2,485,090	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv6\Debug
Xamlruntime.rel	2,317,244	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv6\Debug
Xamlruntime.dll	2,232,320	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv6\Debug
Xamlruntime.map	1,787,558	03-Jul-2015	10:55	Public\Common\Oak\Target\X86\Checked
Xamlruntime.rel	1,731,067	03-Jul-2015	10:55	Public\Common\Oak\Target\X86\Checked
Xamlruntime.dll	1,060,864	03-Jul-2015	10:55	Public\Common\Oak\Target\X86\Checked
Xamlruntime.map	1,428,788	03-Jul-2015	10:54	Public\Common\Oak\Target\X86\Retail
Xamlruntime.rel	1,626,087	03-Jul-2015	10:54	Public\Common\Oak\Target\X86\Retail
Xamlruntime.dll	778,240	03-Jul-2015	10:54	Public\Common\Oak\Target\X86\Retail
Xamlruntime.map	2,282,239	03-Jul-2015	10:55	Public\Common\Oak\Target\X86\Debug
Xamlruntime.rel	2,140,373	03-Jul-2015	10:55	Public\Common\Oak\Target\X86\Debug
Xamlruntime.dll	1,601,536	03-Jul-2015	10:55	Public\Common\Oak\Target\X86\Debug
Xamlruntime.map	1,803,333	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Checked
Xamlruntime.rel	2,186,193	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Checked
Xamlruntime.dll	1,265,664	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Checked
Xamlruntime.map	1,425,652	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Retail
Xamlruntime.rel	1,955,179	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Retail
Xamlruntime.dll	925,696	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Retail
Xamlruntime.map	2,461,372	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Debug
Xamlruntime.rel	2,927,897	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Debug
Xamlruntime.dll	2,015,232	03-Jul-2015	10:55	Public\Common\Oak\Target\Sh4\Debug
Xamlruntime.map	1,838,850	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Checked
Xamlruntime.rel	2,819,669	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Checked
Xamlruntime.dll	1,703,936	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Checked
Xamlruntime.map	1,434,544	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Retail
Xamlruntime.rel	2,301,497	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Retail
Xamlruntime.dll	1,236,992	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Retail
Xamlruntime.map	2,460,543	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Debug
Xamlruntime.rel	3,879,010	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Debug
Xamlruntime.dll	2,514,944	03-Jul-2015	10:55	Public\Common\Oak\Target\Mipsii_fp\Debug
Xamlruntime.map	1,833,276	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv7\Checked
Xamlruntime.rel	1,763,460	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv7\Checked
Xamlruntime.dll	1,351,680	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv7\Checked
Xamlruntime.map	1,264,094	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv7\Retail
Xamlruntime.rel	1,577,802	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv7\Retail
Xamlruntime.dll	966,656	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv7\Retail
Xamlruntime.map	2,485,098	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv7\Debug
Xamlruntime.rel	2,317,215	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv7\Debug
Xamlruntime.dll	2,228,224	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv7\Debug
Xamlruntime.map	1,833,826	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv5\Checked
Xamlruntime.rel	1,769,086	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv5\Checked
Xamlruntime.dll	1,372,160	03-Jul-2015	10:56	Public\Common\Oak\Target\Armv5\Checked
Xamlruntime.map	1,264,656	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv5\Retail
Xamlruntime.rel	1,582,471	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv5\Retail
Xamlruntime.dll	983,040	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv5\Retail
Xamlruntime.map	2,484,754	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv5\Debug
Xamlruntime.rel	2,324,871	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv5\Debug
Xamlruntime.dll	2,240,512	03-Jul-2015	10:55	Public\Common\Oak\Target\Armv5\Debug