Microsoft KB Archive/927180

= FIX: An application that is built by using the 64-bit Microsoft Visual C++ 2005 Optimizing Compiler may not run correctly =

Article ID: 927180

Article Last Modified on 11/28/2006

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APPLIES TO


 * Microsoft Visual Studio 2005 Express Edition
 * Microsoft Visual Studio 2005 Professional Edition
 * Microsoft Visual Studio 2005 Standard Edition
 * Microsoft Visual Studio 2005 Team Edition for Software Architects
 * Microsoft Visual Studio 2005 Team Edition for Software Developers
 * Microsoft Visual Studio 2005 Team Edition for Software Testers
 * Microsoft Visual Studio 2005 Team Foundation Server
 * Microsoft Visual Studio 2005 Team Foundation
 * Microsoft Visual Studio 2005 Team System Test Edition
 * Microsoft Visual Studio 2005 Tools for the Microsoft Office System

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SYMPTOMS
When you try to run an application that is built by using the 64-bit Microsoft Visual C++ 2005 Optimizing Compiler, the application may not run correctly. For example, the application may prematurely exit a code loop, or the application may perform too many iterations of a code loop. This problem occurs when you use the optimize for speed feature of the Visual C++ Optimizing Compiler.



CAUSE
This problem occurs because the 64-bit Visual C++ 2005 Optimizing Compiler generates an incorrect instruction for the loop index counter when code loops are processed. When this occurs, the compiler may produce code that causes incorrect values to persist in the high 32 bits of a 64-bit register.



RESOLUTION
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it 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 Microsoft Visual Studio 2005 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

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
There are no prerequisites for installing this hotfix.

Restart requirement
You do not have to restart your 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.



STATUS
Microsoft has confirmed that this is a bug in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Keywords: kbcompiler kboptimization kblangcpp kbhotfixserver kbqfe kbfix KB927180

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