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

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Message-ID: <BANLkTik81kgf=g+QngnaB7gNUF+xCQdSvw@mail.gmail.com>
Date:	Thu, 30 Jun 2011 10:43:47 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Randy Dunlap <rdunlap@...otime.net>,
	Linux Kernel Development <linux-kernel@...r.kernel.org>,
	Mikael Starvik <starvik@...s.com>,
	Jesper Nilsson <jesper.nilsson@...s.com>,
	linux-cris-kernel@...s.com
Subject: Re: Build regressions/improvements in v3.0-rc5 (ssize_t ???)

On Thu, Jun 30, 2011 at 10:01, Christoph Hellwig <hch@...radead.org> wrote:
> On Thu, Jun 30, 2011 at 08:59:28AM +0200, Geert Uytterhoeven wrote:
>> 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.
>
> Changing a user visible type won't be very nice for those using it in
> C++ code.

Are __kernel_* types exported to C++ userspace?

> Better fix the code to use the proper %zd specifier for printing ssize_t
> variables.

We cannot, as that would break on all other platforms that use the
correct ssize_t.

The problem is the incorrect typedef in the cris headers.

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
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