Re: [PATCH] n_tty: fix redirected_tty_write checks after write_iter conversion

[Linus Torvalds]

On Mon, Jan 25, 2021 at 12:03 PM Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote:
>
> Neither, I noticed this because the conflicting function declarations
> broke Clang's Control Flow Integrity checking.

Ahh, interesting. Is that automated somewhere, or are you running your
own special checks? It sounds like a useful thing.

I was thinking that maybe I should make some sparse-based cross-file
checker, but it sounds like -fsanitize=cfi (or whatever it is you do)
catches it.

              Linus