如何在MFC下所有异常生成core dump文件?

[aaxron05]

代码如下:
如何把所有的异常都能生成 dmp文件?
详见注释

#include <iostream>
#include <stdio.h>
#include <afxwin.h>
#include <dbghelp.h>
using namespace std;

#pragma comment(lib, "Dbghelp.lib")

class FOO{
public:
int name;
};

class BAR:public FOO{
public:
char dir;
};
LONG WINAPI MyUnhandledFilter(struct _EXCEPTION_POINTERS *lpExceptionInfo)
{
SetErrorMode( SEM_NOGPFAULTERRORBOX );
LONG ret = EXCEPTION_EXECUTE_HANDLER;

TCHAR szFileName[64];
SYSTEMTIME st;
::GetLocalTime(&st);
sprintf(szFileName, _T("%04d-%02d-%02d %02d.%02d.%02d.%02d%02d.dmp"), st.wYear, st.wMonth, st.wDay, st.wHour, st.wMinute, st.wSecond, st.wMilliseconds, rand()%100);

HANDLE hFile = ::CreateFile(szFileName, GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL );
if (hFile != INVALID_HANDLE_VALUE)
{
MINIDUMP_EXCEPTION_INFORMATION ExInfo;

ExInfo.ThreadId = ::GetCurrentThreadId();
ExInfo.ExceptionPointers = lpExceptionInfo;
ExInfo.ClientPointers = false;

// write the dump

BOOL bOK = MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(), hFile, MiniDumpNormal, &ExInfo, NULL, NULL );

if (bOK)
{
printf("Create Dump File Success!\n");
}
else
{
printf("MiniDumpWriteDump Failed: %d\n", GetLastError());
}

::CloseHandle(hFile);
}
else
{
printf("Create File %s Failed %d\n", szFileName, GetLastError());
}
return ret;
}

int main()
{
::SetUnhandledExceptionFilter(MyUnhandledFilter);

FOO a;
a.name = 5;
FOO* pa = &a;
BAR* b = (BAR*)pa;
b->dir = 'c';
//以上强制类型转换的异常不会生成dmp文件,请问如何解决


//*(int*)0=6; // AV,这行代码取消注释能生成dmp文件.

return 0;
}