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Date:   Tue, 13 Sep 2022 10:34:21 -0700
From:   Kees Cook <>
To:     Rich Felker <>
Cc:     Yoshinori Sato <>,,
        Geert Uytterhoeven <>,
        Paul Mundt <>,,
Subject: Re: [PATCH] sh: machvec: Use char[] for section boundaries

On Thu, Sep 08, 2022 at 06:15:39PM -0400, Rich Felker wrote:
> On Wed, Sep 07, 2022 at 04:43:45PM -0700, Kees Cook wrote:
> > As done for other sections, define the extern as a character array,
> > which relaxes many of the compiler-time object size checks, which would
> > otherwise assume it's a single long. Solves the following build error:
> > 
> > arch/sh/kernel/machvec.c: error: array subscript 'struct sh_machine_vector[0]' is partly outside array bounds of 'long int[1]' [-Werror=array-bounds]:  => 105:33
> LGMT. This is the approach I recommend for this general type of
> mechanism. So,
> Acked-by: Rich Felker <>
> Since I haven't been on top of collating patches for upstreaming, I'd
> be happy if anyone else wants to take this in their tree before I get
> back to it.

Great; thanks! I'll take it via my tree. :)


Kees Cook

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