Re: C++ programmer and assembly

On Apr 17, 9:31 am, "j...@liimatta.org" <j...@liimatta.org> wrote:


Maybe not always, but certainly not never:

struct ref
{
   a_ref(int& aa)
   :a(aa)
   {}

   int& a;
};

I would expect this reference to be stored as a pointer. To make the
point, you can try the following code (undefined, naturally, assume
some standard headers):

int main()
{
    int i = 0xdeadbeef;
    ref r(i);

    cout << hex << **(int**)&r << endl;
}

You'll get "deadbeef" as the result. Granted, they may not always be
implemented that way, but as pass-by-reference function arguments and
in structs, it's hard to envisage other ways to implement them
(assuming that everything isn't inlined).

-Ed

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