Q167323: BUG: Compiler Error C2955 Caused by Global STL Iterators

Article: Q167323
Product(s): Microsoft C Compiler
Version(s): 4.2
Operating System(s): 
Keyword(s): kbcode kbProgramming kbLangCPP kbVCkbbuglist
Last Modified: 04-AUG-2001

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The information in this article applies to:

- Microsoft Visual C++, 32-bit Enterprise Edition, version 4.2 
- Microsoft Visual C++, 32-bit Professional Edition, version 4.2 
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SYMPTOMS
========

When you declare a global typedef of any STL iterator, the compiler error C2955
occurs.

RESOLUTION
==========

In the sample code below, replace:

     typedef IntVector::iterator IT ;

with the following code:

     // Workaround for VC++ 4.2:
     #if _MSC_VER == 1020
     struct X
     {
         typedef IntVector::iterator it ;
     };
     typedef X::it IT ;
     #else
     typedef IntVector::iterator IT ;
     #endif

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.

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

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

     /* Compile options needed: /GX
     */ 
     #include <iostream>
     #include <vector>
     typedef vector<int, allocator <int> >   IntVector;
     // C2955 error on the following line
     typedef IntVector::iterator IT ;
     void Show (IT i)
     {
         cout << *i << endl;
     }
     int main (int argc, char *argv[])
     {
         IntVector   v;
         v.push_back(1);
         v.push_back(2);
         v.push_back(3);
         for (IntVector::iterator i = v.begin(); i != v.end(); i++)
         {
             Show(i);
         }
         return 0 ;
     }

Additional query words: STL iterator

======================================================================
Keywords          : kbcode kbProgramming kbLangCPP kbVC kbbuglist
Technology        : kbVCsearch kbAudDeveloper kbVC420 kbVC32bitSearch
Version           : 4.2
Issue type        : kbbug

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

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