[libcxx-commits] [libcxxabi] [libc++abi] Always use thread_local for cxa_exception_storage (PR #79868)

[Louis Dionne via libcxx-commits]

ldionne wrote:

> We don't define this macro. We use the code in the `#else` block.

Ah yes, of course.

I'm going to drop this patch for now, since I just realized that basically all platforms have been taking the "no thread local support" path. Perhaps this patch should instead remove the path where we *use* `thread_local`, since that is never used.

https://github.com/llvm/llvm-project/pull/79868