DIP 1024--Shared Atomics--Community Review Round 1

[Kagamin]

On Wednesday, 2 October 2019 at 11:49:48 UTC, Atila Neves wrote:
> @system code can always cast away shared.

It's justified for @safe code, because safety is mandatory there, 
but not for system code. Access to shared data is well within 
semantics of system code. System code is even intended to access 
shared data because safe code can't do it in general case.