[libc-commits] [libc] [libc] Enable unistd.h on linux/arm and aarch64 (PR #214429)

[Pavel Labath via libc-commits]

labath wrote:

This should be ready now. I've asked for a re-review because I've made several changes since the initial version. I'll also note that (u)sleep is not in the list of enabled entry points because our implementation does not work with 32-bit time_t. Since we've now dropped support for 32-bit time_t, I think we also ought to build/test the overlay mode with _TIME_BITS=64. I couple of other entry points are not working due to analogous problems with file offsets, though in this case, I'm not aware of an explicit decision to not support that (but I think it's a good idea to not support this use case).

https://github.com/llvm/llvm-project/pull/214429