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Q151675: FIX: Re-throwing Exception Causes Abnormal Program Termination

Article: Q151675
Product(s): Microsoft C Compiler
Version(s): 4.00 4.10 4.20
Operating System(s): 
Keyword(s): kbCompiler kbVC500fix
Last Modified: 31-JUL-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Visual C++, versions 4.0, 4.1 
- Microsoft Visual C++, 32-bit Enterprise Edition, version 4.2 
- Microsoft Visual C++, 32-bit Professional Edition, version 4.2 
-------------------------------------------------------------------------------

SYMPTOMS
========

When creating a temporary object and then re-throwing an exception, as
demonstrated in the sample code in the More Information section of this article,
the application terminates abnormally.


RESOLUTION
==========

See the More Information section for the sample code and the workaround.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article. This bug was corrected in Visual C++ version 5.0.

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

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

     /* Compile options needed: /GX /O2
     */ 
     class aClass
     {
     public:
        aClass(const char*){} ;
        ~aClass(){} ;
     } ;

     void push(const aClass& val)
     {
     }

     void main()
     {

        int a = 5 ;
        try
        {
           try
           {
              throw a ;
           }
           catch(int)
           {
              //Workaround: uncomment the following 2 lines
              //aClass aObj("ABC") ;
              //push(aObj) ;
              //Comment the line below
              push("ABC") ;
              throw ;
           }
           catch(...)
           {
           }
        }
        catch(...)
        {
        }
     }

Additional query words: kbVC400bug

======================================================================
Keywords          : kbCompiler kbVC500fix 
Technology        : kbVCsearch kbVC400 kbAudDeveloper kbVC410 kbVC420 kbVC32bitSearch
Version           : 4.00 4.10 4.20
Issue type        : kbbug
Solution Type     : kbfix

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

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