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FIX: When you use the Native Image Generator (Ngen.exe) in the .NET Framework 2.0, the size of the stack frames increases significantly

Article ID: 923325 - View products that this article applies to.

SYMPTOMS

When you use the Native Image Generator (Ngen.exe) in the Microsoft .NET Framework 2.0, the size of the stack frames increases significantly.

Note When you compile the same code by using the just-in-time (JIT) compiler, the same code consumes much less of the stack.

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CAUSE

The JIT compiler has a mode in which most of the optimizations are turned off when you compile very large methods. However, the Native Image Generator does not have this mode. Therefore, the code that the Native Image Generator generates may put methods inline in a large method that already has many local variables. This behavior creates even more local variables for the large method. Additionally, this behavior produces very large stack frames that consume lots of the stack space.

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RESOLUTION

Hotfix information

A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next .NET Framework 2.0 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

(http://support.microsoft.com/contactus/?ws=support)

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

The following list contains prerequisites for the hotfix:

The .NET Framework 2.0

Restart requirement

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

Hotfix replacement information

This hotfix does not replace a previously released 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.