[libc-commits] [libc] [libc] check a few syscall #'s to avoid wrong syscalls (PR #123100)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

The current inclusion in do_start only checks fullbuild. Perhaps for overlay mode I should include this from the headers that define our syscalls...

https://github.com/llvm/llvm-project/pull/123100