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

From: Chris Wilson
Date: Sat Dec 25 2010 - 08:41:01 EST


On Sat, 25 Dec 2010 14:13:43 +0100, Jarek Poplawski <jarkao2@xxxxxxxxx> 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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