[libc-commits] [libc] [libc] `-Wimplicit-fallthrough`, `-Wwrite-strings` and non-GCC warnings (PR #124036)

[Nick Desaulniers via libc-commits]

nickdesaulniers wrote:

Sorry, I'm hitting some pre-existing build breakages with newer versions of gcc (#120427).  I'd like to wait to get that resolved first, so that I can re-test this PR with both clang and gcc.

https://github.com/llvm/llvm-project/pull/124036