linux-kernel - Re: Sparse warnings from calls to max3() and max

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Message-ID: <20181003222951.5vp47nf5x7ipyyi2@ltop.local>
Date:   Thu, 4 Oct 2018 00:29:52 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Larry Finger <Larry.Finger@...inger.net>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Christopher Li <sparse@...isli.org>,
        Randy Dunlap <rdunlap@...radead.org>
Subject: Re: Sparse warnings from calls to max3() and max

On Tue, Oct 02, 2018 at 06:44:39PM -0500, Larry Finger wrote:
> Hi,
> 
> Sparse has suddenly started issuing as many as 11 warnings of
> "expression using sizeof(void)" for each call to max3(). There are
> similar warnings for calls to max(), thus I think this is the origin
> of the problem. My sparse version is 20180324-1.3-x86_64 installed
> in openSUSE Tumbleweed. My kernel is 4.19.0-rc6.

Hi,

This problem is resolved in a more recent version of sparse,
the one you can find at:
  git://github.com/lucvoo/sparse-dev

See Linus' email about it:
  https://lore.kernel.org/lkml/CA+55aFzYEnZR2GZLR-DwpONjMNYGYoDy+6AWLCVNayWiaZuqoA@mail.gmail.com/T/#u

NB. The official version hosted on kernel.org is not uptodate but
    I hope this will solved in a few weeks.

Best regards,
-- Luc Van Oostenryck