linux-kernel - Re: [PATCH][next] drm: Replace zero-length array with flexible-array member

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Date:   Tue, 25 Feb 2020 15:04:26 +0000
From:   Chris Wilson <chris@...is-wilson.co.uk>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Christian Gmeiner <christian.gmeiner@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Dave Airlie <airlied@...hat.com>,
        David Airlie <airlied@...ux.ie>, Eric Anholt <eric@...olt.net>,
        Gerd Hoffmann <kraxel@...hat.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Patrik Jakobsson <patrik.r.jakobsson@...il.com>,
        Rob Clark <robdclark@...il.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        Russell King <linux+etnaviv@...linux.org.uk>,
        Sean Paul <sean@...rly.run>,
        Thomas Hellstrom <thellstrom@...are.com>,
        Thomas Zimmermann <tzimmermann@...e.de>,
        VMware Graphics <linux-graphics-maintainer@...are.com>
Cc:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        linux-arm-msm@...r.kernel.org, intel-gfx@...ts.freedesktop.org,
        etnaviv@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, spice-devel@...ts.freedesktop.org,
        virtualization@...ts.linux-foundation.org,
        freedreno@...ts.freedesktop.org
Subject: Re: [PATCH][next] drm: Replace zero-length array with flexible-array member

Quoting Gustavo A. R. Silva (2020-02-25 14:03:47)
> The current codebase makes use of the zero-length array language
> extension to the C90 standard, but the preferred mechanism to declare
> variable-length types such as these ones is a flexible array member[1][2],
> introduced in C99:

I remember when gcc didn't support []. For the record, it appears
support for flexible arrays landed in gcc-3.0. So passes the minimum
compiler spec. That would be useful to mention for old farts with
forgetful memories.
-Chris