linux-kernel - RE: Build regressions/improvements in v3.0-rc5 (ssize

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Date:	Thu, 30 Jun 2011 09:16:00 +0200
From:	Mikael Starvik <mikael.starvik@...s.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Randy Dunlap <rdunlap@...otime.net>
CC:	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	Jesper Nilsson <jespern@...s.com>,
	linux-cris-kernel <linux-cris-kernel@...s.com>
Subject: RE: Build regressions/improvements in v3.0-rc5 (ssize_t ???)

>The "long" should be "int".
>But probably it should just include <asm-generic/posix_types.h> instead.

Agreed. We won´t be able to test and push something like that before vacation but feel free to test
that change and commit it if it works. Otherwise we'll fix it after vacations.

/Mikael

-----Original Message-----
From: geert.uytterhoeven@...il.com [mailto:geert.uytterhoeven@...il.com] On Behalf Of Geert Uytterhoeven
Sent: den 30 juni 2011 08:59
To: Randy Dunlap
Cc: Linux Kernel Development; Mikael Starvik; Jesper Nilsson; linux-cris-kernel
Subject: Re: Build regressions/improvements in v3.0-rc5 (ssize_t ???)

On Wed, Jun 29, 2011 at 23:06, Randy Dunlap <rdunlap@...otime.net> wrote:
> On Wed, 29 Jun 2011 10:13:17 +0200 (CEST) Geert Uytterhoeven wrote:
>
>> *** WARNINGS ***
>>
>> 358 regressions:
>
>>   + drivers/net/wimax/i2400m/usb-fw.c: warning: format '%zd' expects type 'signed size_t', but argument 4 has type 'ssize_t':  => 210
>>   + drivers/net/wimax/i2400m/usb-fw.c: warning: format '%zd' expects type 'signed size_t', but argument 8 has type 'ssize_t':  => 222
>
>>   + drivers/staging/bcm/Bcmchar.c: warning: format '%zd' expects type 'signed size_t', but argument 2 has type 'ssize_t':  => 146
>>   + drivers/staging/bcm/Bcmchar.c: warning: format '%zd' expects type 'signed size_t', but argument 3 has type 'ssize_t':  => 146
>
>>   + net/sunrpc/auth_gss/auth_gss.c: warning: format '%Zd' expects type 'signed size_t', but argument 2 has type 'ssize_t':  => 708
>>   + net/sunrpc/auth_gss/auth_gss.c: warning: format '%zd' expects type 'signed size_t', but argument 3 has type 'ssize_t':  => 690
>
>
> Can someone explain these warnings, please?  (signed size_t vs. ssize_t)
>
> Is gcc confused?
> Looks like a compiler issue to me.

Nope. Also only happens on cris, which has in
arch/cris/include/asm/posix_types.h:

typedef long            __kernel_ssize_t;

The "long" should be "int".
But probably it should just include <asm-generic/posix_types.h> instead.

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