[Issue 23969] Windows cannot export/import TLS from DLLs

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23969

Richard Cattermole <alphaglosined at gmail.com> changed:

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--- Comment #3 from Richard Cattermole <alphaglosined at gmail.com> ---
(In reply to Walter Bright from comment #2)
> TL/DR: exporting TLS from DLLs causes a system crash.

But only on operating systems below Vista, which we don't support.

However in saying that, we should probably disallow exporting of TLS variables
anyway as it'll be platform/libc dependent and that could get old very fast
trying to figure out why your application doesn't work when ported. Only then
to have to rewrite everything.

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