The application may crash when you run a .NET Framework 4.0-based application that uses the Diasymreader.dll component

Consider the following scenario:

• You run a Microsoft .NET Framework 4.0-based application that uses the Diasymreader.dll component.
• The application consumes a large amount of memory.

In this scenario, an access violation may occur in the Diasymreader.dll component, and then the application crashes.

This issue occurs because the LONG data type is incorrectly used for a variable that stores the difference between two 64-bit pointers in a growing buffer. Therefore, the data in the growing buffer becomes corrupted.

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

To download this hotfix from the MSDN Code Gallery, visit the following Microsoft website:

Note The MSDN Code Gallery displays the languages for which the hotfix is available. If you do not see your language listed, it is because the Code Gallery resource page is not available for that language.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft website:
Note You can also download this hotfix from the following Microsoft website:

http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=31018 (http://connect.microsoft.com/VisualStudio/Downloads/DownloadDetails.aspx?DownloadID=31018)

Prerequisites

To apply this hotfix, you must have the .NET Framework 4.0 installed. 

Restart requirement

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

Hotfix replacement information

This hotfix does not replace any other hotfix.

File Information

The English version of this hotfix 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.

For all supported x86-based versions of Windows XP, of Windows Server 2003, of Windows Vista, of Windows Server 2008, of Windows 7, and of Windows Server 2008 R2

For all supported x64-based versions of Windows XP, of Windows Server 2003, of Windows Vista, of Windows Server 2008, of Windows 7, and of Windows Server 2008 R2

For all supported IA-64-based versions of Windows XP, of Windows Server 2003, of Windows Vista, of Windows Server 2008, of Windows 7, and of Windows Server 2008 R2

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.