[libc-commits] [libc] [libc][termios] Make termios hermetic and fix its compatibility with glibc 2.42 or after. (PR #211039)

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argothiel wrote:

The issue blocks CI for release/23.x, e.g.:
https://github.com/llvm/llvm-project/actions/runs/37132472402/job/111233839130?pr=228722

Can we back port this?

https://github.com/llvm/llvm-project/pull/211039