Symptoms

Consider the following scenario:

  • You create a C++/CLI project by using Microsoft Visual Studio 2005 Service Pack 1 (SP1).

  • The source code in the project executes a throw statement or a _declspec(noreturn) function. The code that is executed after the statement or the _declspec(noreturn) function is run frequently.

  • You build the project with an optimization compiler option enabled. For example, you enable the Maximize Speed (/O2) optimization compiler option. An application is generated after you build the project.

  • An exception is thrown or the _declspec(noreturn) function is executed when you run the application.

In this scenario, a destructor for an unmanaged stack object in the source code is called incorrectly. Additionally, an access violation exception may occur or other unexpected behavior may occur on the application.

Cause

The issue occurs because the Command Language Runtime (CLR) code that tries to unwind the stack runs in an incorrect exception handling state.

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 software update 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 website:

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

NoteYou can also download this hotfix from the following Microsoft website:

Download this hotfix package from the Microsoft Connect website 

Prerequisites

To apply this hotfix, you must have Microsoft Visual Studio 2005 Service Pack 1 installed.

Restart requirement

You must restart the computer after you apply the hotfix if any instance of Visual Studio is running. We recommend you close Visual Studio applications before you apply the 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.

File name

File version

File size

Date

Time

Platform

C2.dll

14.0.50727.5587

2,273,280

16-Nov-2010

22:41

x86

C2.dll

14.0.50727.5587

7,196,160

17-Nov-2010

04:08

IA-64

C2.dll

14.0.50727.5587

2,490,368

17-Nov-2010

04:09

x86

C2.dll

14.0.50727.5587

3,600,384

17-Nov-2010

04:13

x64

C2.dll

14.0.50727.5587

2,203,648

17-Nov-2010

04:13

x86

Pgodb80.dll

8.0.50727.5587

65,536

16-Nov-2010

22:39

x86

Pgodb80.dll

8.0.50727.5587

130,560

17-Nov-2010

04:09

IA-64

Pgodb80.dll

8.0.50727.5587

70,656

17-Nov-2010

04:13

x64


Status

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

Workaround

To work around this problem, disable the optimization option when you build the project.

References

For more information about the _declspec(noreturn) function, visit the following Microsoft Developer Network (MSDN) website:

General information about the _declspec(noreturn) function

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