linux-kernel - Re: [cocci] [PATCH -mm] -funsigned-char, x86: make struct p4_event

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Message-ID: <CAHmME9o3BDe+s2QaT4X8jg+9cc9A-3iHWnL0WnFyqKcGuhahXQ@mail.gmail.com>
Date:   Thu, 3 Nov 2022 13:47:14 +0100
From:   "Jason A. Donenfeld" <Jason@...c4.com>
To:     Julia Lawall <julia.lawall@...ia.fr>
Cc:     Kees Cook <keescook@...omium.org>, cocci@...ia.fr,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Alexey Dobriyan <adobriyan@...il.com>,
        akpm@...ux-foundation.org, linux-kernel@...r.kernel.org,
        mm-commits@...r.kernel.org, masahiroy@...nel.org,
        gregkh@...uxfoundation.org, andriy.shevchenko@...ux.intel.com,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [cocci] [PATCH -mm] -funsigned-char, x86: make struct
 p4_event_bind::cntr signed array

Hi Julia,

On Thu, Nov 3, 2022 at 1:45 PM Julia Lawall <julia.lawall@...ia.fr> wrote:
> It should work now.

Thanks!

> However, without disable optional_qualifier, char is
> still matching signed char.  If you think that should be changed, I can do
> that.

Does `optional_qualifier` disable other things that might be
interesting to have? If so, maybe this is less than ideal? If not,
maybe it doesn't matter?

Though, for what it's worth, gcc treats `char` as a separate type,
even when using `-funsigned-char` or `-fsigned-char`.

Jason