[Issue 22335] Exporting variables from DLLs is unusable

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=22335

--- Comment #2 from Max Samukha <maxsamukha at gmail.com> ---
(In reply to Walter Bright from comment #1)
> It's currently necessary to manually create a .di file with the contents:
> 
>     export extern __gshared int x;
> 
> for this to work.

That's literally what I wrote. The point of this bug report is that it has to
be done manually because neither simple import nor "-H" work.

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