From: Thomas Gleixner <tglx@linutronix.de>
To: Stephen Rothwell <sfr@canb.auug.org.au>,
Ingo Molnar <mingo@elte.hu>, "H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Al Viro <viro@zeniv.linux.org.uk>
Subject: Re: linux-next: build warning after merge of the tip tree
Date: Wed, 01 Apr 2020 12:25:25 +0200
Message-ID: <877dyzv6y2.fsf@nanos.tec.linutronix.de> (raw)
In-Reply-To: <20200401085753.617c1636@canb.auug.org.au>
Stephen Rothwell <sfr@canb.auug.org.au> writes:
> Hi all,
>
> On Mon, 30 Mar 2020 13:47:46 +1100 Stephen Rothwell <sfr@canb.auug.org.au> wrote:
>>
>> Hi all,
>>
>> After merging the tip tree, today's linux-next build (arm
>> multi_v7_defconfig) produced this warning:
>>
>> kernel/futex.c: In function 'do_futex':
>> kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized]
>> 1676 | return oldval == cmparg;
>> | ~~~~~~~^~~~~~~~~
>> kernel/futex.c:1652:6: note: 'oldval' was declared here
>> 1652 | int oldval, ret;
>> | ^~~~~~
>>
>> Introduced by commit
>>
>> a08971e9488d ("futex: arch_futex_atomic_op_inuser() calling
>> conventions change")
Huch?
>> but I don't see how it makes this difference :-(
Me neither. Which compiler version?
I'm using arm-linux-gnueabi-gcc (Debian 8.3.0-2) 8.3.0 which does not
show that oddity.
Thanks,
tglx
next prev parent reply index
Thread overview: 133+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-30 2:47 Stephen Rothwell
2020-03-31 21:57 ` Stephen Rothwell
2020-04-01 10:25 ` Thomas Gleixner [this message]
2020-04-01 22:00 ` Stephen Rothwell
2020-04-01 22:39 ` Thomas Gleixner
2020-04-13 0:01 ` Stephen Rothwell
2020-04-14 8:42 ` Thomas Gleixner
2020-04-14 9:07 ` ARM: futex: Address build warning Thomas Gleixner
2020-05-06 22:19 ` Stephen Rothwell
-- strict thread matches above, loose matches on Subject: below --
2020-10-28 3:23 linux-next: build warning after merge of the tip tree Stephen Rothwell
2020-10-08 4:28 Stephen Rothwell
2020-10-08 9:02 ` Borislav Petkov
2020-09-25 9:36 Stephen Rothwell
2020-09-14 3:22 Stephen Rothwell
2020-09-14 20:11 ` Kees Cook
2020-09-14 22:35 ` Stephen Rothwell
2020-10-01 11:02 ` Stephen Rothwell
2020-10-02 22:46 ` Kees Cook
2020-10-03 21:54 ` Kees Cook
2020-10-03 23:24 ` Stephen Rothwell
2020-10-04 7:42 ` Kees Cook
2020-10-04 8:27 ` Kees Cook
2020-10-04 10:00 ` Stephen Rothwell
2020-10-05 2:44 ` Kees Cook
2020-10-14 22:25 ` Stephen Rothwell
2020-10-14 23:10 ` Kees Cook
2020-10-15 0:19 ` Stephen Rothwell
2020-05-21 11:56 Stephen Rothwell
2020-05-19 6:57 Stephen Rothwell
2020-05-19 7:12 ` Steve French
2020-04-28 6:29 Stephen Rothwell
2020-01-20 5:38 Stephen Rothwell
2020-01-20 6:00 ` Viresh Kumar
2020-01-07 5:43 Stephen Rothwell
2020-01-07 7:16 ` Ingo Molnar
2020-01-07 7:22 ` Shile Zhang
2019-07-26 3:05 Stephen Rothwell
2019-07-26 4:49 ` Josh Poimboeuf
2019-07-26 5:49 ` Stephen Rothwell
2018-11-06 0:46 Stephen Rothwell
2018-12-19 0:55 ` Stephen Rothwell
2018-09-11 3:53 Stephen Rothwell
2018-09-12 19:35 ` Thomas Gleixner
2018-03-23 2:28 Stephen Rothwell
2018-03-23 8:31 ` Christoph Hellwig
2018-03-23 9:57 ` Stephen Rothwell
2018-03-16 5:37 Stephen Rothwell
2018-03-16 5:52 ` Dou Liyang
2018-03-16 6:04 ` Dou Liyang
2018-03-16 7:55 ` Thomas Gleixner
2018-01-10 4:41 Stephen Rothwell
2017-09-27 3:42 Stephen Rothwell
2017-09-27 11:50 ` Prarit Bhargava
2017-06-28 7:15 Stephen Rothwell
2017-06-23 3:58 Stephen Rothwell
2017-06-23 4:00 ` Stephen Rothwell
2017-06-23 4:10 ` Michael Ellerman
2017-06-23 4:22 ` Stephen Rothwell
2016-12-14 2:28 Stephen Rothwell
2016-12-14 7:24 ` Ingo Molnar
2016-12-14 8:05 ` Richard Weinberger
2016-12-14 8:26 ` Stephen Rothwell
2016-12-14 8:10 ` Stephen Rothwell
2016-07-24 5:32 Stephen Rothwell
2016-07-25 7:16 ` Thomas Gleixner
2016-07-25 13:11 ` Daniel Lezcano
2016-07-25 14:53 ` Rich Felker
2016-07-25 16:42 ` Mark Brown
2016-07-25 17:54 ` Rich Felker
2016-07-25 14:48 ` Rich Felker
2016-04-07 5:26 Stephen Rothwell
2016-04-07 8:48 ` Ingo Molnar
2016-04-07 12:03 ` Stephen Rothwell
2015-05-12 3:35 Stephen Rothwell
2014-08-05 0:58 Stephen Rothwell
2014-07-18 5:00 Stephen Rothwell
2014-07-18 19:16 ` H. Peter Anvin
2014-07-18 19:57 ` Andy Lutomirski
2014-07-18 20:05 ` H. Peter Anvin
2014-07-18 20:08 ` Andy Lutomirski
2014-07-18 20:15 ` H. Peter Anvin
2014-07-18 20:20 ` Andy Lutomirski
2014-07-18 20:50 ` H. Peter Anvin
2014-06-16 1:57 Stephen Rothwell
2014-06-20 4:24 ` Stephen Rothwell
2014-06-20 4:30 ` H. Peter Anvin
2014-06-20 4:35 ` Stephen Rothwell
2014-03-06 6:12 Stephen Rothwell
2014-02-24 4:17 Stephen Rothwell
2014-02-24 5:56 ` Stephen Rothwell
2014-02-24 6:12 ` Andrew Morton
2014-02-24 6:23 ` Stephen Rothwell
2014-02-24 15:48 ` Andi Kleen
2014-02-24 15:51 ` H. Peter Anvin
2014-03-06 4:00 ` Stephen Rothwell
2014-03-28 5:52 ` Stephen Rothwell
2014-03-31 9:45 ` Thomas Gleixner
2014-03-31 10:57 ` Stephen Rothwell
2014-04-01 0:26 ` Stephen Rothwell
2014-04-01 1:56 ` H. Peter Anvin
2013-08-19 4:26 Stephen Rothwell
2013-08-19 6:58 ` Ingo Molnar
2013-08-20 0:52 ` Andi Kleen
2013-08-20 6:42 ` Ingo Molnar
2013-08-30 8:55 ` Stephen Rothwell
2013-08-30 20:42 ` Andi Kleen
2013-08-31 6:41 ` Ingo Molnar
2013-02-02 5:58 Stephen Rothwell
2013-02-02 5:55 Stephen Rothwell
2013-02-02 5:51 Stephen Rothwell
2013-01-30 11:41 Stephen Rothwell
2012-10-01 14:54 Stephen Rothwell
2012-10-01 16:10 ` Josh Triplett
2012-09-27 7:46 Stephen Rothwell
2011-09-14 6:34 Stephen Rothwell
2011-09-14 7:49 ` Yong Zhang
2011-09-14 9:37 ` Thomas Gleixner
2011-09-14 9:43 ` Shan Hai
2011-09-14 6:22 Stephen Rothwell
2010-11-29 1:11 Stephen Rothwell
2010-09-03 2:10 Stephen Rothwell
2010-09-03 2:12 ` Stephen Rothwell
2010-09-03 9:04 ` Wu Fengguang
2010-09-03 10:07 ` Haicheng Li
2010-05-17 5:58 Stephen Rothwell
2010-03-17 3:57 Stephen Rothwell
2010-03-17 4:00 ` KOSAKI Motohiro
2010-03-17 4:52 ` Stephen Rothwell
2010-03-17 7:02 ` Ingo Molnar
2010-03-17 8:02 ` KOSAKI Motohiro
2010-02-23 5:01 Stephen Rothwell
2010-02-23 8:52 ` Yinghai Lu
2010-02-23 10:43 ` Stephen Rothwell
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