linux-kernel - Re: [PATCH 2/4] x86, selftests, mpx: fix up weird arrays

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Message-ID: <20171121083202.fmp3mvtq7iwd6nc3@gmail.com>
Date:   Tue, 21 Nov 2017 09:32:02 +0100
From:   Ingo Molnar <mingo@...nel.org>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, x86@...nel.org
Subject: Re: [PATCH 2/4] x86, selftests, mpx: fix up weird arrays


* Dave Hansen <dave.hansen@...ux.intel.com> wrote:

> 
> The MPX hardware data structurse are defined in a weird way: they define
> their size in bytes and then union that with the type with which we want
> to access them.
> 
> Yes, this is weird, but it does work.  But, new GCC's complain that we
> are accessing the array out of bounds.  Just make it a zero-sized array
> so gcc will stop complaining.  There was not really a bug here.

Note, I've added your missing Signed-off-by line.

Thanks,

	Ingo