linux-kernel - Re: [GIT PULL] Cgroup writeback support for 4.2

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Message-ID: <CAMuHMdU7p1zQs6aFTWx1GAPNZcnqjqr_Msp_gAvMhzF8k8YGYg@mail.gmail.com>
Date:	Fri, 26 Jun 2015 16:56:11 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Tejun Heo <tj@...nel.org>
Cc:	Jens Axboe <axboe@...com>, torvalds@...uxfoundation.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PULL] Cgroup writeback support for 4.2

Hi Tejun,

On Fri, Jun 26, 2015 at 4:28 PM, Tejun Heo <tj@...nel.org> wrote:
>> That's why I keep on using gcc 4.1.2: it still gives build warnings for
>> many "used uninitialized" cases that later gcc versions let pass silently.
>>
>> Granted, some of these are false positives (that's why it was disabled in
>> later gcc versions), but some of these are valid and real bugs.
>
> That's kinda surprising.  My impression has been that later gcc
> versions are doing a lot better job both at actually detecting
> problematic ones and avoiding false positives.  I'm surprised that
> 4.1.2 is still catching uninitialized usages later gcc's (and other
> static analyzers) can't.  Can you roughly say how often it detects
> actual problems that later ones can't?

A handful every merge window. That's why I keep on doing this :-)

Since the release of v4.1:
  - https://lkml.org/lkml/2015/6/25/334
  - https://lkml.org/lkml/2015/6/25/337
  - https://lkml.org/lkml/2015/6/24/88

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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