GLOBAL_BAD_TYPEID.cpp

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// checking for class ::bad_typeid
 
 
#include "config.h"
 
 
#ifndef _RWSTD_NO_TYPEINFO
#  include <typeinfo>
#else   // if defined (_RWSTD_NO_TYPEINFO)
#  ifndef _RWSTD_NO_TYPEINFO_H
#    include <typeinfo.h>
#  else   // if defined (_RWSTD_NO_TYPEINFO_H)
 
// 5.2.8, p6: using typeid() without #including <typeinfo>
//            first yields undefined behavior...
 
class bad_typeid { };
 
#  endif   // _RWSTD_NO_TYPEINFO_H
#endif   // _RWSTD_NO_TYPEINFO
 
 
#if 2 == __GNUG__
#  ifndef _RWSTD_NO_HONOR_STD
#    ifdef _RWSTD_NO_STD_TERMINATE
#      include "terminate.h"
#    endif   // _RWSTD_NO_STD_TERMINATE
#  endif   // _RWSTD_NO_HONOR_STD
#endif   // gcc 2.x
 
 
struct S { virtual ~S () { } };
 
int main ()
{
    try {
        S *s = 0;
 
        // expected to throw [std::] bad_typeid
        typeid (*s);
    }
    catch (bad_typeid&) {
        return 0;
    }
    catch (...) {
        // fail if typeid throws anything other than a std::bad_typeid
        return 1;
    }
 
    // fail if typeid doesn't throw
    return 2;
}