FIX: Slow compile time when you compile a Visual C++ application in Visual Studio 2010


Consider the following scenario:
  • You develop a Visual C++ application in Microsoft Visual Studio 2010.
  • You build the application.
In this scenario, it takes longer than expected to compile the application.


  • This issue typically occurs when the application contains a long function in which a local variable is assigned and used multiple times. Additionally, the function that is in the type is usually machine-generated code.
  • The issue is more likely to occur if the /GS (Buffer Security Check) compiler option is enabled when you compile the application.


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: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.


To apply this hotfix, you must have Visual Studio 2010 Service Pack 1 installed.

Restart requirement

You do not have to restart the computer after you install the hotfix if the affected files are not being used during the installation process. We recommend that you close all Visual Studio 2010-related components before you install 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.
For all supported versions of Visual Studio 2010
File nameFile versionFile sizeDateTimePlatform


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


To work around this issue, disable the optimization option for machine-generated code that contains large functions when you compile the application. To disable the optimization option, use one of the following methods:
  • Use the /Od compiler option.
  • Use the #pragma optimize ("", off) statement in the source code.

More Information

For more information about the /GS compiler option in Visual Studio 2010, go to the following MSDN website:

Article ID: 2718436 - Last Review: Jan 8, 2013 - Revision: 1

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