[Dlang-internal] DIP1000 discussion and testing

[Martin Nowak via Dlang-internal]

On Saturday, 17 December 2016 at 07:29:17 UTC, Walter Bright 
wrote:
> On 12/16/2016 9:08 AM, Mathias Lang wrote:
>> As long as we have:
>> - A way to take the address of `scope` pointers
>
> Taking the address of a scope pointer is invalid, I'll fix the 
> method you used to do it.

What is the reasoning for disallowing that?
Is dealing with second order indirections (scope int**) somehow 
different from from other escape checks?