RCArray is unsafe

[Walter Bright via Digitalmars-d]

On 3/2/2015 3:47 PM, weaselcat wrote:
> That's actually very old(0.6 - nearly 2 years ago.) I believe rooting was
> dropped from the language completely.
>
> http://doc.rust-lang.org/book/ownership.html
>
> also, rust by example chapter 17-19 cover this
> http://rustbyexample.com/move.html

Thanks for the info. But I don't see how Marc's example is prevented by this.