DOCUMENT:Q146000  30-JUL-2001  [visualc]
TITLE   :FIX: C1001 Including Header File in Template Class Definition
PRODUCT :Microsoft C Compiler
PROD/VER::4.0,4.1
OPER/SYS:
KEYWORDS:kbCompiler kbCPPonly kbVC

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The information in this article applies to:

 - Microsoft C/C++ Compiler (CL.EXE), included with:
    - *EDITOR Please do not choose this product*Microsoft Visual C++ 32-bit Edition* use 241, 265, 225, versions 4.0, 4.1 
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SYMPTOMS
========

If you use the #include preprocessor directive in a template class definition,
the following internal compiler error may be generated:

   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

RESOLUTION
==========

Do not use #include directive in a template class definition.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This problem was corrected in Microsoft Visual C++,
32-bit Edition, version 4.2.

MORE INFORMATION
================

Sample Code
-----------

   // Compile Options - none

   //test.cpp

   template <class T> class TestClass {
   public:
     #include "test.h" // this line generates the C1001 error

   };

   TestClass<char> ClassInst;

   //end test.cpp

   //test.h
   #define TEST 1

   //end test.h

Additional query words: kbVC400bug 4.00 4.10 10.00 10.10 vcfixlist420

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Keywords          : kbCompiler kbCPPonly kbVC 
Technology        : kbVCsearch kbAudDeveloper kbCVCComp
Version           : :4.0,4.1
Issue type        : kbbug
Solution Type     : kbfix

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