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BUG: Fatal Error C1001 Using /Zg with Large C++ Header Files
ID: Q122042
 
 |  The information in this article applies to:
 
 
The Microsoft C/C++ Compiler (CL.EXE)
   
Microsoft Visual C++ for Windows, 16-bit edition, versions  1.5, 1.51
Microsoft Visual C++, 32-bit Editions, versions  1.0, 2.0, 4.0, 4.1, 4.2, 5.0, 6.0
 
 
 SYMPTOMS
Compiling a .CPP file that includes a large amount of header file
information may cause the compiler to generate a C1001 error when
using the /Zg switch to generate function prototypes.
 
 In Visual C++ 32-bit edition, version 6.0, the error message
   might appear as follows:
      
Please choose the Technical Support command on the Visual C++ Help menu,
   or open the Technical Support help file for more information.
      fatal error C1001: INTERNAL COMPILER ERROR(compiler file 'msc1.cpp', line 1786)
In Visual C++ 32-bit edition, version 5.0, the error message
   might appear as follows:
      
Please choose the Technical Support command on the Visual C++ Help menu,
   or open the Technical Support help file for more information.
      fatal error C1001: INTERNAL COMPILER ERROR(compiler file 'msc1.cpp', line 1188)
In Visual C++ 32-bit edition, version 4.x (Compiler version
   10.00), the error message might appear as follows:
      
Please choose the Technical Support command on the Visual C++ Help menu,
   or open the Technical Support help file for more information.
      fatal error C1001: INTERNAL COMPILER ERROR(compiler file 'msc1.cpp', line 899)
In Visual C++ 32-bit edition, version 2.0 (Compiler version 9.00),
   the error message appears as follows:
      
Please choose the Technical Support command on the Visual C++ Help menu,
   or open the Technical Support help file for more information.
      fatal error C1001: INTERNAL COMPILER ERROR(compiler file 'msc1.cpp', line 1056)
In Visual C++ 32-bit edition, version 1.0 (Compiler version 8.00),
   the error message appears as follows:
      
Please choose the Technical Support command on the Visual Workbench Help
   menu, or open the Technical Support help file for more information.
      fatal error C1001: INTERNAL COMPILER ERROR(compiler file 'msc1.cpp', line 602)
In Visual C++ for Windows, versions 1.5 and 1.51 (Compiler version
   8.00c), the error message appears as follows:
      
      fatal error C1001: INTERNAL COMPILER ERROR(compiler file 'msc1.cpp', line 585)
 
 RESOLUTION
Avoid using /Zg with a large amount of header file information, such as the
MFC class library headers.
 
 STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed
at the beginning of this article. We are researching this bug and will post
new information here in the Microsoft Knowledge Base as it becomes
available.
 Additional query words: 
8.00 8.00c 9.00 10.00 10.10 10.20 afxwin afxcoll  
Keywords          : kberrmsg kbVC100bug kbVC200bug kbVC400bug kbVC410bug kbVC420bug kbVC500bug kbVC600bug Version           :
 Platform          : NT WINDOWS
 Issue type        : kbbug
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