[cfe-dev] [libcxx][libcxxabi] Use of thread_local in libcxxabi

[Asiri Rathnayake via cfe-dev]

Hi Marshall,

(Guess you are back in the sunny part of the world? ;))

So, I noted that there is a bit of code in libcxxabi
(cxa_exception_storage.cpp) that uses thread_local (if explicitly enabled).
I'm wondering why we don't give this option in libcxx? It seems we always
delegate all TLS stuff in libcxx to pthreads.

Thanks!

- Asiri
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