First Draft: Static Single Assignment

[jmh530]

On Thursday, 4 December 2025 at 08:58:03 UTC, Walter Bright wrote:
> I've come to realize the following:
>
> ```d
> void test() {
>     final int x = 3;
>     pragma(msg, typeof(&x));
> }
> ```
> prints: const(int)*
>
> which is a more practical way to make this all work. I've made 
> the changes to the PR.

So taking the address of x gives a const pointer? Is `x` itself 
const?