linux-kernel - Re: The sheer number of sparse warnings in the kernel

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Date:	Wed, 26 Feb 2014 17:06:39 -0800
From:	Joe Perches <joe@...ches.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: The sheer number of sparse warnings in the kernel

On Wed, 2014-02-26 at 16:51 -0800, H. Peter Anvin wrote:
> On 02/26/2014 04:48 PM, Joe Perches wrote:
> > err.h could also return bool instead of long for the
> > IS_ERR and IS_ERR_OR_NULL tests.
> 
> This is definitely true... although we should check that that doesn't
> make the code worse as this is used *all over* the kernel.

I tested using arch/x86/crypto/ x86-64 and 32
and there are no .o file differences using
bool or long via objdump -d new and old

> > Maybe something like this could be useful.
> > 
> > Shut up the unsigned<->signed pointer conversions
> > and implicit conversions in the Makefile.
> 
> Sounds like two separate patches to me.

Yeah, it was just for discussion.

I think gcc 4.8 is overly noisy about those 2.


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