linux-kernel - Re: Many unexpected warnings with current sparse

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Message-ID: <CAH2r5mvnYtmfpHY+jeUbN4JehQwY1XfBWYVNSLO+wx1wkAA6gA@mail.gmail.com>
Date:   Tue, 1 Oct 2019 18:14:23 -0500
From:   Steve French <smfrench@...il.com>
To:     Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>, sparse@...r.kernel.org,
        linux-sparse@...r.kernel.org
Subject: Re: Many unexpected warnings with current sparse

It may be related to the following sparse make warning:

No rule to make target
'/usr/include/x86_64-linux-gnu/bits/huge_val.h', needed by
'sparse-llvm.o'

I don't see huge_val.h in the Ubuntu 19 version of libc6-dev

Will send you the kernel config - but I am using the default one from
the Ubuntu mainline download of 5.4-rc1

On Tue, Oct 1, 2019 at 6:10 PM Luc Van Oostenryck
<luc.vanoostenryck@...il.com> wrote:
>
> On Tue, Oct 01, 2019 at 11:28:16AM -0500, Steve French wrote:
> > Updated sparse to get rid of some unneeded kernel sparse check
> > warnings but now get many more
> >
> > I get 100s of warnings similar to
> >
> > ./include/linux/quota.h:114:17: error: Expected ( after asm
> > ./include/linux/quota.h:114:17: error: got __inline
> >
> > but that is simply
> >         default:
> >                 BUG();
>
> Hi,
>
> I don't see this on v5.4-rc1 with defconfig or allyesconfig and
> sparse's current version. Any sparse's version since roughly
> mid-December should give the same result.
>
> If you're using an older version of sparse, please upgrade.
> Otherwise, please send me your config so that I can take a look at it.
>
>
> Best regards,
> -- Luc Van Oostenryck



-- 
Thanks,

Steve