linux-kernel - Re: [PATCH v3] sparse: add -Wpointer-arith flag to toggle sizeof(void) warnings

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Message-ID: <20180410194117.ei4eo3kaxvv2ezdx@ltop.local>
Date:   Tue, 10 Apr 2018 21:41:19 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Joey Pabalinas <joeypabalinas@...il.com>
Cc:     linux-sparse@...r.kernel.org, Kees Cook <keescook@...omium.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Martin Uecker <Martin.Uecker@....uni-goettingen.de>,
        Al Viro <viro@...IV.linux.org.uk>,
        Christopher Li <sparse@...isli.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] sparse: add -Wpointer-arith flag to toggle
 sizeof(void) warnings

On Mon, Apr 09, 2018 at 03:02:04PM -1000, Joey Pabalinas wrote:
> Recent changes to the min()/max() macros in include/linux/kernel.h
> have added a lot of noise when compiling the kernel with Sparse checking
> enabled. This mostly is due to the *huge* increase in the number of
> sizeof(void) warnings, a larger number of which can safely be ignored.
> 

Thank you very much.

There is just a problem with the test but it's my fault as I
pointed to you to my tree but the master tree lack a lot of fixes
and have problems when dereferencing function pointers.
So, for the master tree, I propose to use a version with these
tests removed:
	git://github.com/lucvoo/sparse-dev.git pointer-arith-v3

Cheers,
-- Luc