Thanks, Jonathan, for your detailed answer.

Ashish

...stack won't be unwound properly, so RAII, scope statements, and finally blocks aren't...

Ok, now there are two issues here:
IMPLEMENTATION: Implementation of a safe_exit() without an...

And how would it do that? The only way in the language to properly unwind...

...following code shows that exit() breaks C++ RAII.

#include <iostream>
#include <cstdlib>

struct SafeExit {
    ~SafeExit...

A D exit function would have to do essentially the same thing as throw an...

Yeah, really. I'd been using the C exit() as well. Seems like a pretty...

Could druntime hook up on the atexit function to run destructors and similar when the...

Thanks, Andrej. That option had occurred to me, but I figured that shouldn't be...

...main() to return your status code. Unlike
exit(), throwing will take care of RAII stuff.