linux-kernel - Re: [PATCH] Fix pointer cast for 32 bits arch

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Message-ID: <CAMuHMdWaGLR2uKK0EEh6AiqDkQUR0uyLiBLSL_ZMBoP=7B4Tvg@mail.gmail.com>
Date:	Sun, 12 Apr 2015 21:06:41 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Joe Perches <joe@...ches.com>
Cc:	Peter Senna Tschudin <peter.senna@...il.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Loic Pefferkorn <loic@...cp.eu>, Alan <alan@...ux.intel.com>,
	Jun Tian <jun.j.tian@...el.com>,
	Octavian Purdila <octavian.purdila@...el.com>,
	Garret Kelly <garret.kelly@...il.com>,
	Kristina Martšenko <kristina.martsenko@...il.com>,
	Nick Kralevich <nnk@...gle.com>,
	driverdevel <devel@...verdev.osuosl.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] Fix pointer cast for 32 bits arch

On Sun, Apr 12, 2015 at 8:14 PM, Joe Perches <joe@...ches.com> wrote:
> On Sun, 2015-04-12 at 17:38 +0200, Geert Uytterhoeven wrote:
>> Perhaps checkpatch should complain about casts outside header files?
>
> I think that's not feasible/desirable.
>
> type casting is pretty common and necessary.
> There are 50k+ casts in drivers/ alone.

What a pity.... How many of those are wrong? ;-)

If there's one thing I like about C++, it's the new-style casts, and how easy
they are to grep for, unlike their C counterparts.

It would help if gcc offered -Wcast, so we could at least identify all newly
introduced casts by comparing build logs, and audit them manually (like
with other warnings).

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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