linux-kernel - Re: [PATCH 2/3] compiler.h: Introduce __must_be_char

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Message-ID: <202502061325.16B973132@keescook>
Date: Thu, 6 Feb 2025 13:26:36 -0800
From: Kees Cook <kees@...nel.org>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: Suren Baghdasaryan <surenb@...gle.com>,
	Andy Shevchenko <andy@...nel.org>,
	Luc Van Oostenryck <luc.vanoostenryck@...il.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <ndesaulniers@...gle.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	Philipp Reisner <philipp.reisner@...bit.com>,
	Miguel Ojeda <ojeda@...nel.org>, linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH 2/3] compiler.h: Introduce __must_be_char_array()

On Thu, Feb 06, 2025 at 03:50:47PM -0500, Kent Overstreet wrote:
> On Thu, Feb 06, 2025 at 10:11:29AM -0800, Kees Cook wrote:
> > In preparation for adding stricter type checking to the str/mem*()
> > helpers, provide a way to check that a variable is a character array
> > via __must_be_char_array().
> > 
> > Signed-off-by: Kees Cook <kees@...nel.org>
> 
> Suggested-by? :)

Sure, I'll add that. I did it for the ARRAY_SIZE() and forgot which
pieces came from where when I split up the patches. :)

-- 
Kees Cook