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From: Andrew Cooper <andrew.cooper3@citrix.com>
To: Jan Beulich <JBeulich@suse.com>,
	Doug Goldstein <cardoe@cardoe.com>, Wei Liu <wei.liu2@citrix.com>
Cc: xen-devel@lists.xenproject.org, osstest-admin@xenproject.org
Subject: Re: [xen-unstable-smoke bisection] complete build-arm64-xsm
Date: Wed, 14 Mar 2018 09:01:10 +0000	[thread overview]
Message-ID: <04f8a92f-0e9f-a256-8d6f-127457a4d114@citrix.com> (raw)
In-Reply-To: <5AA8E46602000078001B1591@prv-mh.provo.novell.com>

On 14/03/2018 07:59, Jan Beulich wrote:
>>>> On 14.03.18 at 03:29, <osstest-admin@xenproject.org> wrote:
>> branch xen-unstable-smoke
>> xenbranch xen-unstable-smoke
>> job build-arm64-xsm
>> testid xen-build
>>
>> Tree: qemuu git://xenbits.xen.org/qemu-xen.git
>> Tree: xen git://xenbits.xen.org/xen.git
>>
>> *** Found and reproduced problem changeset ***
>>
>>   Bug is in tree:  xen git://xenbits.xen.org/xen.git
>>   Bug introduced:  b43501451733193b265de30fd79a764363a2a473
>>   Bug not present: eef83fd2af0d4c78afec34c199c977fc97d8a0b3
>>   Last fail repro: http://logs.test-lab.xenproject.org/osstest/logs/120707/ 
>>
>>
>>   commit b43501451733193b265de30fd79a764363a2a473
>>   Author: Doug Goldstein <cardoe@cardoe.com>
>>   Date:   Mon Mar 12 23:06:51 2018 -0500
>>   
>>       tools: detect appropriate debug optimization level
>>       
>>       When building debug use -Og as the optimization level if its available,
>>       otherwise retain the use of -O0. -Og has been added by GCC to enable all
>>       optimizations that to not affect debugging while retaining full
>>       debugability.
>>       
>>       Signed-off-by: Doug Goldstein <cardoe@cardoe.com>
>>       Acked-by: Wei Liu <wei.liu2@citrix.com>
> Sadly altering optimization levels always has the potential of
> triggering issues like this:
>
> xc_dom_arm.c: In function 'meminit':
> xc_dom_arm.c:446:5: error: 'p2m_size' may be used uninitialized in this function [-Werror=maybe-uninitialized]
>      for ( pfn = 0; pfn < p2m_size; pfn++ )
>      ^
> cc1: all warnings being treated as errors
> /home/osstest/build.120709.build-arm64-xsm/xen/tools/libxc/../../tools/Rules.mk:230: recipe for target 'xc_dom_arm.o' failed
> make[5]: *** [xc_dom_arm.o] Error 1

We really should be build testing things at all optimisation levels.  We
should be ashamed that -O3 gives build failures in most of our major
components.  (This is yet another item on my TODO list which I've not
had time to complete.)

~Andrew

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  reply	other threads:[~2018-03-14  9:01 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-14  2:29 [xen-unstable-smoke bisection] complete build-arm64-xsm osstest service owner
2018-03-14  7:59 ` Jan Beulich
2018-03-14  9:01   ` Andrew Cooper [this message]
2018-03-14 10:54     ` Wei Liu
2018-03-14 13:42       ` Doug Goldstein
  -- strict thread matches above, loose matches on Subject: below --
2023-06-08  7:13 osstest service owner
2022-09-30  0:06 osstest service owner
2021-07-06 20:34 osstest service owner
2021-05-18 19:57 osstest service owner
2021-02-02  4:17 osstest service owner
2021-01-15 20:46 osstest service owner
2020-10-24  2:26 osstest service owner
2020-05-29 15:11 osstest service owner
2019-05-21 18:46 osstest service owner
2018-10-09 21:55 osstest service owner
2018-04-13  1:17 osstest service owner
2018-04-06  1:15 osstest service owner
2018-03-08  7:03 osstest service owner
2018-01-27  3:32 osstest service owner
2018-01-25 21:47 osstest service owner
2018-01-17  2:07 osstest service owner

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