try/catch behaviour with SEH (VC++ 8)

Aurelien Regat-Barrel <>
Fri, 07 Sep 2007 15:40:40 +0530
Hi there,

I am a little bit confused. I used to think that std C++ exceptions are
mapped on top of SEH with VC++, but it seems it is no longer true. The
following example:

     #define WIN32_LEAN_AND_MEAN
     #include <windows.h>
     #include <iostream>

     void test()
             int *p = 0;
             *p = 0;
         catch ( ... )
             std::cout << "Catched in C++ handler!\n";

     int main()
         __except( EXCEPTION_ACCESS_VIOLATION == GetExceptionCode() )
             std::cout << "Catched in SEH handler!\n";
         return 0;

outputs "Catched in C++ handler!" if compiled with VC++ 6 - okay. But
VC++ Express 2005 SP1 warns about unreachable code in the catch(...)
block (warning C4702), and the compiled program outputs "Catched in SEH

I am very confused about that, I was really convinced it should work as
with VC++ 6. Does anyone know more about this ?


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