Q200495: FIX: Cannot Create bad_typeid Object with /MD

Article: Q200495
Product(s): Microsoft C Compiler
Version(s): winnt:5.0
Operating System(s): 
Keyword(s): kbVC500bug kbVC600fixkbbuglist
Last Modified: 04-MAY-2001

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The information in this article applies to:

- The Standard C++ Library, used with:
   - Microsoft Visual C++, 32-bit Enterprise Edition, version 5.0 
   - Microsoft Visual C++, 32-bit Professional Edition, version 5.0 
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SYMPTOMS
========

If you try to create an object of type bad_typeid in an application built with
the DLL version of the C run-time library (/MD ), you get the following link
errors:

  error LNK2001: unresolved external symbol "__declspec(dllimport) public:
  virtual __thiscall std::bad_typeid::~bad_typeid(void)"
  (__imp_??1bad_typeid@std@@UAE@XZ)

  error LNK2001: unresolved external symbol "__declspec(dllimport) public:
  __thiscall std::bad_typeid::bad_typeid(char const *)"
  (__imp_??0bad_typeid@std@@QAE@PBD@Z)

RESOLUTION
==========

Link with any of the the static versions of the C run-time library (/MT or /ML).

STATUS
======

Microsoft has confirmed this to be a problem in the Microsoft products that are
listed at the beginning of this article.This problem was corrected in Microsoft
Visual C++ version 6.0.

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

The following sample program demonstrates the problem:

      //Sample.cpp
      //Compile options :  /MD
      #include <typeinfo>
      using namespace std;
      int main ()
      {
          bad_typeid bid;
          return 0;
      }

Additional query words:

======================================================================
Keywords          : kbVC500bug kbVC600fix kbbuglist
Technology        : kbVCsearch kbAudDeveloper kbVCLibrary
Version           : winnt:5.0
Issue type        : kbbug
Solution Type     : kbfix

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