[libcxx-commits] [libcxx] [libc++] Introduce a new attribute keyword for Clang improves compatibility with Mingw-GCC (PR #141040)

[Tomohiro Kashiwada via libcxx-commits]

kikairoya wrote:

Sorry, I'm currently running into some other issues while trying to investigate the side effects of exporting inner classes by modifying Clang.
If it’s not necessary to wait for that investigation, I believe this PR is ready for review (with small changes to commit msg.)

https://github.com/llvm/llvm-project/pull/141040