BUG: Fatal Error C1001 Using /Zg with Large C++ Header Files

• The Microsoft C/C++ Compiler (CL.EXE) included with: - Microsoft Visual C++ for Windows, versions 1.5, 1.51 - Microsoft Visual C++, 32-bit Edition, versions 1.0, 2.0, 4.0, 4.1,

       4.2, 5.0
  

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, vesrion 5.0, the error message may appear as:

        fatal error C1001: INTERNAL COMPILER ERROR
                           (compiler file 'msc1.cpp', line 1188)
  
     Please choose the Technical Support command on the Visual C++ Help menu,
     or open the Technical Support help file for more information.
  
  

• In Visual C++ 32-bit edition, version 4.x (Compiler version 10.00), the error message may appears as:

        fatal error C1001: INTERNAL COMPILER ERROR
                           (compiler file 'msc1.cpp', line 899)
  
     Please choose the Technical Support command on the Visual C++ Help menu,
     or open the Technical Support help file for more information.
  
  

• In Visual C++ 32-bit edition, version 2.0 (Compiler version 9.00), the error message appears as:

        fatal error C1001: INTERNAL COMPILER ERROR
                           (compiler file 'msc1.cpp', line 1056)
  
     Please choose the Technical Support command on the Visual C++ Help menu,
     or open the Technical Support help file for more information.
  
  

• In Visual C++ 32-bit edition, version 1.0 (Compiler version 8.00), the error message appears as:

        fatal error C1001: INTERNAL COMPILER ERROR
                           (compiler file 'msc1.cpp', line 602)
  
     Please choose the Technical Support command on the Visual Workbench Help
     menu, or open the Technical Support help file for more information.
  
  

• In Visual C++ for Windows, versions 1.5 and 1.51 (Compiler version 8.00c), the error message appears as:

        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.