Q146000: FIX: C1001 Including Header File in Template Class Definition

Article: Q146000
Product(s): Microsoft C Compiler
Version(s): 4.0,4.1
Operating System(s): 
Keyword(s): kbCompiler kbCPPonly kbVC
Last Modified: 30-JUL-2001

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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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