FIX: You receive an error message or an exception when you compile or run an application that has some compiler options turned on in Visual Studio 2008 SP1

Symptom 1

When you compile a project that contains the /arch:SSE(2) option and the /fp:except option, you receive the following error message:

Symptom 2

When you run a Visual C++ application that contains an uninitialized floating-point, a floating-point exception occurs. Additionally, you may receive the following error message:

This problem occurs if the following conditions are true:

• You add the /fp:except option to the compiler option list to disable the floating-point exception.

• 
  The source code contains an uninitialized floating-point variable.
  

• The uninitialized floating-point variable is located in a memory that contains a signaling not-a-number (NaN) value.

Symptom 3

When you compile an unmanaged Visual C++ application by using the /O2 compiler option or the /Ox compiler option, you receive an exception that resembles the following:

Notes

• The number 0x00401342 may change at different times.
  

• The exception is not generated when you turn on the /Od compiler option or the /O1 compiler option.
  

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 Visual Studio 2008 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=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.