How do you get T from shared(T) ?

[tcak via Digitalmars-d-learn]

On Sunday, 28 September 2014 at 09:11:07 UTC, Marco Leise wrote:
> For head-unshared there is `static if (is(T U : shared U))`.
> But how do you get the unshared type for anything from `shared
> void*` to `shared uint` ?

shared int a;

int b = cast()a;