linux-kernel - Re: [2.6.37-rc7] drivers/gpu/drm/drm_edid.c:1303: warning: array subscript is above array bounds

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Message-Id: <c6d829$pvchrr@fmsmga001.fm.intel.com>
Date:	Sat, 25 Dec 2010 13:38:56 +0000
From:	Chris Wilson <chris@...is-wilson.co.uk>
To:	Jarek Poplawski <jarkao2@...il.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Cc:	David Airlie <airlied@...ux.ie>, dri-devel@...ts.freedesktop.org
Subject: Re: [2.6.37-rc7] drivers/gpu/drm/drm_edid.c:1303: warning: array subscript is above array bounds

On Sat, 25 Dec 2010 14:13:43 +0100, Jarek Poplawski <jarkao2@...il.com> wrote:
> Hi,
> There is this compile warning in Linus' tree (gcc version 4.3.3):
> 
> drivers/gpu/drm/drm_edid.c: In function 'drm_detect_hdmi_monitor':
> drivers/gpu/drm/drm_edid.c:1303: warning: array subscript is above array bounds
> drivers/gpu/drm/drm_edid.c: In function 'drm_detect_monitor_audio':
> drivers/gpu/drm/drm_edid.c:1303: warning: array subscript is above array bounds

What array? It's declared as "u8 *edid_ext;". At first glance looks like a
compiler bug, applying subscript testing to an object with unknown bounds.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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