[libc-commits] [libc] [libc] Add faccessat entrypoints for aarch64 and riscv (PR #165869)

[Michael Jones via libc-commits]

https://github.com/michaelrj-google approved this pull request.

LGTM, it might be good to add a comment to `entrypoints.txt` explaining that `faccessat` might get excluded, or a cmake message when that happens if verbose logging is on.

https://github.com/llvm/llvm-project/pull/165869