[libc-commits] [libc] [libc] Add `ctime_s` (PR #110676)

[Nick Desaulniers via libc-commits]

https://github.com/nickdesaulniers requested changes to this pull request.

I'm going to reread those two WG 21 papers to better familiarize myself towards the argument for Annex K.

For now, I'm going to request changes to block this from landing until I make a decision wrt. Annex K support.  I believe we currently don't support Annex K at all, so I need to think hard about whether we intend to open this can of worms.

https://github.com/llvm/llvm-project/pull/110676