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FIX: Error C1001 when you compile a C source code file to a 64-bit binary file by using the Visual C/C++ compiler (Cl.exe) in Visual Studio 2010

Article ID: 2685649 - View products that this article applies to.

SYMPTOMS

Assume that you compile a C source code file to a 64-bit binary file by using the Visual C/C++ compiler (Cl.exe) in Microsoft Visual Studio 2010. If you have enabled the /O1 (Minimize Space) optimization option or the /O2 (Maximize Speed) optimization option, you might receive an error message that resembles the following when you try to compile the file:

fatal error C1001: An internal error has occurred in the compiler. (compiler file 'file name and path [0x0000000054BA3E3C:0x0000000000000044]', line line number)

Notes

This issue occurs only when you compile a C source code file to a 64-bit binary file that has the /O1 or the /O2 optimization option enabled. This issue does not occur when both optimization options are disabled or when you compile the source code file to a 32-bit binary file.
To compile a C source code file while the /O2 (Maximize Speed) optimization option is enabled, open the Visual Studio x64 Cross Tools Command Prompt in Visual Studio 2010 tool. Or, open the Visual Studio x64 Win64 Command Prompt in Visual Studio 2010 tool. Then, execute the following command:
cl 'source file path' -c -O2

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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 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=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

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. 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.