Question

I have DLL and application that will call some function in this dll. For example…

DLL function:

char const* func1() 
{ 
    return reinterpret_cast<char const*>(0x11223344); 
}

Application code:

func1 = reinterpret_cast<Func1Callback>(::GetProcAddress(hDll, "func1"));
blablabla
char const* ptr = func1();
cout << ptr;

That DLL is not under my control (plugin)..
Same code will cause access violation in my application, so… Is there any mechanism that will allow to determine such errors?

Answer 1

Since the DLL can do anything your program could do the only reliable way is to load it into a separate worker lightweight process and once anything bad happens just restart the process. You’ll need some protocol to pass data into the worker process and receive results.