[Issue 23756] Add thread local constructor/destructor pragma

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23756

Richard Cattermole <alphaglosined at gmail.com> changed:

           What    |Removed                     |Added
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                 OS|Windows                     |All

--- Comment #4 from Richard Cattermole <alphaglosined at gmail.com> ---
Glibc offers support for C++ thread local destruction as part of its
implementation of pthread.

https://sourceware.org/glibc/wiki/Destructor%20support%20for%20thread_local%20variables

Via ``__cxa_thread_atexit ``.

I don't know how we could hook into this, but it seems like we could do it if
we wanted to.

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