[libcxx-commits] [libcxx] [libc++] Avoid including <features.h> on arbitrary platforms (PR #125587)

[Louis Dionne via libcxx-commits]

ldionne wrote:

@petrhosek Gentle ping. If you have specific concerns about landing this partial revert, please let me know ASAP so we can work on addressing them. Landing this patch addresses a regression that was introduced in LLVM 20 so I'd like to do this sooner rather than later.

https://github.com/llvm/llvm-project/pull/125587