FIX: Fatal Error C1001 When You Compile a Program with Global Optimizer (316090)
The information in this article applies to:
- Microsoft Visual C++ .NET (2002)
This article was previously published under Q316090 SYMPTOMS When you compile a program with global optimizer, you
receive the following error message: "fatal error C1001:
INTERNAL COMPILER ERROR (compiler file
'f:\vs70builds\9466\vc\Compiler\Utc\src\P2\emit.c', line 937)
Please
choose the Technical Support command on the Visual Help menu, or open the
Technical Support help file for more information." CAUSE The behavior occurs because optimizer puts too many
instructions in the function prolog for a particular optimization (frame
pointer omission). RESOLUTION To work around the problem, you must prevent instructions
from being scheduled in the prolog. To do this, do one of the following:
- Make a function call to an external function that is
contained in another object file (may not work when Whole program
optimization (/GL) is enabled) or DLL.
-or- - Use the undocumented _ReadWriteBarrier() intrinsic at the beginning of the affected function. This
intrinsic does not generate any code but prevents optimizations across the
intrinsic. To do this, add the following declaration to the file:
void _ReadWriteBarrier();
#pragma intrinsic(_ReadWriteBarrier)
Add the following code at the beginning of the function that causes the
C1001 error:
#if _MSC_VER==1300
_ReadWriteBarrier();
#endif
Note The use of undocumented intrinsics is not guaranteed to work in
future versions of the compiler. STATUSMicrosoft has confirmed that this is a bug in the Microsoft
products that are listed at the beginning of this article.
This bug was corrected in Microsoft Visual C++ .NET (2003).
| Modification Type: | Minor | Last Reviewed: | 7/5/2005 |
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| Keywords: | kbfix kbbug kbCompiler kbpending KB316090 |
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