How to cast to "void*", while bypassing alias this or opCast

[anonymous via Digitalmars-d-learn]

On Thursday, 28 August 2014 at 10:45:52 UTC, monarch_dodra wrote:
> I'm investigating a phobos regression. From "doesPointTo":
>
> //----
>     static if (isPointer!S || is(S == class) || is(S == 
> interface))
>     {
>         const m = cast(void*) source;
> //----
>
> Basically, given a "pointer like" structure, I want the void* 
> equivalent. I really don't care about how "S" works, and am 
> "observing" the "source" object as nothing more than a bag of 
> member fields.
>
> The issue though is that it turns out that such code can and 
> will call either opCast or alias this, which is *not* what we 
> want at all in this piece of code.
>
> Is there any way to do a "hard" reinterpret cast in such a 
> situation?

*cast(void**)&source