Safe cast of arrays

[Anon via Digitalmars-d]

On Wednesday, 10 February 2016 at 20:14:29 UTC, Chris Wright 
wrote:
>
> Show a way to read or write outside allocated memory with this, 
> or to cause a segmentation fault, and that will require a 
> change in @safe. You're looking for something else, data safety 
> rather than memory safety. You want to disallow unions and 
> anything that lets you emulate them.

Does this count?

http://dpaste.dzfl.pl/96db07a5104e