DOCUMENT:Q179271  11-FEB-2002  [visualc]
TITLE   :FIX: C1001 Error for More Than One Explicit Instantiation
PRODUCT :Microsoft C Compiler
PROD/VER::5.0,6.0
OPER/SYS:
KEYWORDS:kberrmsg kbtemplate kbCompiler kbVC500bug kbVC600bug kbNoUpdate

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The information in this article applies to:

 - Microsoft Visual C++, 32-bit Enterprise Edition, versions 5.0, 6.0 
 - Microsoft Visual C++, 32-bit Professional Edition, versions 5.0, 6.0 
 - Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
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SYMPTOMS
========

The error C1001 is produced when more than one explicit instantiation of member
template function is implemented. The compiler generates the following error
message:

   test.cpp(13) : 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

CAUSE
=====

Member template implementation is not supported in this product.

RESOLUTION
==========

Do not use explicit instantiation for class member template functions.

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++ .NET.

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

Steps to Reproduce Behavior
---------------------------

The following sample code produces the error message described in the SYMPTOMS
section:

   // test.cpp
   #include <iostream.h>
   lass A
   {
   public:
     template <class T> int getit(int i , T * it )
     {
        cout << "template getit\n" ;
        return i;
     }
   // explicit instantiations
   template  int getit(int i, double * it);

   template   int getit (int i, char * it);// C1001 error on this line
   };


Additional query words: ICE

======================================================================
Keywords          : kberrmsg kbtemplate kbCompiler kbVC500bug kbVC600bug kbNoUpdate 
Technology        : kbVCsearch kbAudDeveloper kbVC500 kbVC600 kbVC32bitSearch kbVC500Search
Version           : :5.0,6.0
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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