[libcxx-commits] [libcxxabi] [libc++abi] Use __has_feature check to enable usage of thread_local for exception storage (PR #97591)

[Nico Weber via libcxx-commits]

nico wrote:

In case anyone else wonders why their binaries that statically link libc++abi no longer `dlclose()` after this change, https://crbug.com/351867703 has some details on that.

(No action needed for libc++abi, just mentioning it in case someone else runs into this.)

https://github.com/llvm/llvm-project/pull/97591