[Issue 24098] Safe variable can be initialized from `@system` static constructor.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24098

--- Comment #2 from timon.gehr at gmx.ch ---
I think the program is still at odds with the language specification even if
requirement 2 is not considered to be violated, because clearly it violates
requirement 1 and the preconditions hold (the preconditions do not say anything
about the state of global variables).

I think this is a related but somewhat independent bug in the specification,
because there could also be `@trusted` code that messes up the state of a
non-`@system` global.

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