Debbugs Internal Request <help-debbugs@HIDDEN>
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Full text available.Paul Eggert <eggert@HIDDEN>
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Full text available.Paul Eggert <eggert@HIDDEN>
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Full text available.Received: (at 34519) by debbugs.gnu.org; 28 Aug 2021 15:29:44 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sat Aug 28 11:29:44 2021 Received: from localhost ([127.0.0.1]:54835 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1mK0H6-0006BF-S7 for submit <at> debbugs.gnu.org; Sat, 28 Aug 2021 11:29:44 -0400 Received: from mx.kolabnow.com ([95.128.36.42]:57010) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <bauermann@HIDDEN>) id 1mK0H1-0006Ax-DX for 34519 <at> debbugs.gnu.org; Sat, 28 Aug 2021 11:29:40 -0400 Received: from localhost (unknown [127.0.0.1]) by ext-mx-out002.mykolab.com (Postfix) with ESMTP id E01601254; Sat, 28 Aug 2021 17:29:28 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kolabnow.com; h= content-type:content-type:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:date:subject:subject :from:from:received:received:received; s=dkim20160331; t= 1630164568; x=1631978969; bh=Pi6G7sXHmwscYrB5KZ7caUNEfuhqXaJTsPj /WGUg9Zc=; b=RwibeL8Iz/8ry3bvrtBPhJarGYGHfpubD9oD4R6uQQycm5yPQUB Pkn9q3dLZEzhqb1jDwYYeuYFGfUBOYIgCPmB0rQ8Fklqcriv6WQhVJ7kbIDMJHS9 D8VYJoCzF5zHRtQe8ob8q88Mks7H4ljAPzt+Szctc7ay2QqpBbSGHFNtmPjSFCCg wZhfKZqf11ut9E7sYmx+Z4sXj+tLrrDpjboVjBlB+KGNkk7C2w7XpNnhARa/sifO yZDmIItp1QmQmNEjQeqhJ3x1dnVBdh4Ah+J8cat5TcrR4qLu/bwHpKomMsfjjR58 45P9OtnD0TNiJ2SuJfPPgjU/PKfunK6/YpzN+n4qWMTeiDs3O5xnbKUzbiDAqSsn 8D3+qRDZCJ6ub+MKxyp8tYEIQ1tx2GPRYzn0+UYKAyCRiSPxtdaPTMBo66rqNFL5 m3iB3fLY6YX55gL7+6W48PH0l1Gy2H+81Nobulpd/HkV/1Qf7bxn8wBGoowE+nJS 7VpnFsyzW2wUj3MtYD43EwJwkaOitNJFUIeAbgUYJxjWyJbjv8KiEXWlOj4VAaw2 OXp3j069Aeu2XppZD9irtVzT2nv+3hSwD+zYYS57dSt5pDy1dMQWfihoYbqT5XRN gmrskELeXDckJRPCesBcDXwNNiIibfLaZE2ObQ8gxZBm9jM2EImUm0sc= X-Virus-Scanned: amavisd-new at mykolab.com X-Spam-Flag: NO X-Spam-Score: -1.9 X-Spam-Level: X-Spam-Status: No, score=-1.9 tagged_above=-10 required=5 tests=[BAYES_00=-1.9] autolearn=ham autolearn_force=no Received: from mx.kolabnow.com ([127.0.0.1]) by localhost (ext-mx-out002.mykolab.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id FrZ35j78E8f3; Sat, 28 Aug 2021 17:29:28 +0200 (CEST) Received: from int-mx003.mykolab.com (unknown [10.9.13.3]) by ext-mx-out002.mykolab.com (Postfix) with ESMTPS id 3AA1CB46; Sat, 28 Aug 2021 17:29:27 +0200 (CEST) Received: from ext-subm002.mykolab.com (unknown [10.9.6.2]) by int-mx003.mykolab.com (Postfix) with ESMTPS id 40DEA3504; Sat, 28 Aug 2021 17:29:24 +0200 (CEST) From: Thiago Jung Bauermann <bauermann@HIDDEN> To: 34519 <at> debbugs.gnu.org Subject: Re: [bug-diffutils] bug#34519: Test "colors" fails on Debian/ppc64el Date: Sat, 28 Aug 2021 12:29:17 -0300 Message-ID: <1657750.94seSsIaSJ@popigai> In-Reply-To: <588c7101-5d51-78f1-e79c-f89c69c3b804@HIDDEN> References: <alpine.DEB.2.20.1902180147100.13056@HIDDEN> <588c7101-5d51-78f1-e79c-f89c69c3b804@HIDDEN> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Spam-Score: 0.0 (/) X-Debbugs-Envelope-To: 34519 Cc: =?ISO-8859-1?Q?Fr=E9d=E9ric?= Bonnard <frediz@HIDDEN>, Santiago Vila <sanvila@HIDDEN>, Paul Eggert <eggert@HIDDEN> X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) Hello, Em ter=C3=A7a-feira, 27 de agosto de 2019, =C3=A0s 19:06:21 -03, Paul Egger= t=20 escreveu: > Santiago Vila wrote: > > In tests/colors there was a race condition which I tried to fix > > by adding a "sleep 1", like this: > >=20 > > mkfifo fifo > > printf '%1000000s-a' > a > > printf '%1000000s-b' > b > > head -c 10 < fifo > /dev/null & > > sleep 1 > > diff --color=3Dalways ---presume-output-tty a b > fifo > > test $? =3D 141 || fail=3D1 >=20 > Sorry, but what is the race condition, and why would adding 'sleep 1' > help? The test should work regardless of whether 'diff' starts before > 'head' does. >=20 > Are fifos broken on your system somehow? >=20 > Can you use 'strace -f' to see what syscalls are going wrong in 'head' > and/or 'diff'? I still see this problem on powerpc64le-linux with version 3.8. There was a great analysis of the problem made by Fr=C3=A9d=C3=A9ric Bonnar= d (whom I=20 took the liberty of copying on this message. I hope it=E2=80=99s ok), and a= lso a=20 tentative fix by him which would need to be assessed by someone more=20 knowledgeable of the diffutils code: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=3D922552#19 In short: it=E2=80=99s not a problem in the test. It=E2=80=99s a bug in the= signal handling=20 code that was added to support the =E2=80=98--color=E2=80=99 option. =46or some reason, it=E2=80=99s particularly easy to hit on powerpc64le-lin= ux. With=20 =46r=C3=A9d=C3=A9ric=E2=80=99s patch I can=E2=80=99t hit it anymore. =2D-=20 Thanks, Thiago
bug-diffutils@HIDDEN:bug#34519; Package diffutils.
Full text available.Received: (at 34519) by debbugs.gnu.org; 27 Aug 2019 22:06:30 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Aug 27 18:06:30 2019 Received: from localhost ([127.0.0.1]:49521 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1i2jbi-0002Jx-Lj for submit <at> debbugs.gnu.org; Tue, 27 Aug 2019 18:06:30 -0400 Received: from zimbra.cs.ucla.edu ([131.179.128.68]:44074) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <eggert@HIDDEN>) id 1i2jbh-0002Je-8Q for 34519 <at> debbugs.gnu.org; Tue, 27 Aug 2019 18:06:29 -0400 Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 0DC831600C6; Tue, 27 Aug 2019 15:06:23 -0700 (PDT) Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 1jNtzTejMUDM; Tue, 27 Aug 2019 15:06:22 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 55D7B1600EC; Tue, 27 Aug 2019 15:06:22 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id PjQDHj2MUIsx; Tue, 27 Aug 2019 15:06:22 -0700 (PDT) Received: from [192.168.1.9] (cpe-23-242-74-103.socal.res.rr.com [23.242.74.103]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 2CCA41600C6; Tue, 27 Aug 2019 15:06:22 -0700 (PDT) Subject: Re: [bug-diffutils] bug#34519: Test "colors" fails on Debian/ppc64el To: Santiago Vila <sanvila@HIDDEN> References: <alpine.DEB.2.20.1902180147100.13056@HIDDEN> From: Paul Eggert <eggert@HIDDEN> Organization: UCLA Computer Science Department Message-ID: <588c7101-5d51-78f1-e79c-f89c69c3b804@HIDDEN> Date: Tue, 27 Aug 2019 15:06:21 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <alpine.DEB.2.20.1902180147100.13056@HIDDEN> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Spam-Score: -2.3 (--) X-Debbugs-Envelope-To: 34519 Cc: 34519 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -3.3 (---) Santiago Vila wrote: > In tests/colors there was a race condition which I tried to fix > by adding a "sleep 1", like this: > > mkfifo fifo > printf '%1000000s-a' > a > printf '%1000000s-b' > b > head -c 10 < fifo > /dev/null & > sleep 1 > diff --color=always ---presume-output-tty a b > fifo > test $? = 141 || fail=1 Sorry, but what is the race condition, and why would adding 'sleep 1' help? The test should work regardless of whether 'diff' starts before 'head' does. Are fifos broken on your system somehow? Can you use 'strace -f' to see what syscalls are going wrong in 'head' and/or 'diff'?
bug-diffutils@HIDDEN:bug#34519; Package diffutils.
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Mon, 18 Feb 2019 01:57:15 +0100 (CET) X-Virus-Scanned: amavisd-new at zproxy01.siue Received: from zproxy01.unex.es ([127.0.0.1]) by localhost (zproxy01.servicios.unex.es [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id r4vLvLKLmh16 for <bug-diffutils@HIDDEN>; Mon, 18 Feb 2019 01:57:15 +0100 (CET) Received: from tulipan.isla-invisible.es (tulipan.isla-invisible.es [185.92.222.134]) by zproxy01.unex.es (Postfix) with ESMTPSA id 4ED0880A30 for <bug-diffutils@HIDDEN>; Mon, 18 Feb 2019 01:57:10 +0100 (CET) Received: by tulipan.isla-invisible.es (Postfix, from userid 1000) id 18B301700; Mon, 18 Feb 2019 01:57:09 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by tulipan.isla-invisible.es (Postfix) with ESMTP id 0C0FC103E for <bug-diffutils@HIDDEN>; Mon, 18 Feb 2019 01:57:09 +0100 (CET) Date: Mon, 18 Feb 2019 01:57:09 +0100 (CET) From: Santiago Vila <sanvila@HIDDEN> To: bug-diffutils@HIDDEN Subject: Test "colors" fails on Debian/ppc64el Message-ID: <alpine.DEB.2.20.1902180147100.13056@HIDDEN> User-Agent: Alpine 2.20 (DEB 67 2015-01-07) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 158.49.17.55 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Spam-Score: 1.0 (+) X-Debbugs-Envelope-To: submit X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -0.0 (/) Hello. I've just uploaded diffutils 3.7 for Debian unstable (hopefully to be part of Debian 10, since it contains only small fixes). But there is a problem: The build in the ppc64el autobuilder failed: https://buildd.debian.org/status/logs.php?pkg=diffutils&ver=1%3A3.7-1&arch=ppc64el In tests/colors there was a race condition which I tried to fix by adding a "sleep 1", like this: mkfifo fifo printf '%1000000s-a' > a printf '%1000000s-b' > b head -c 10 < fifo > /dev/null & sleep 1 diff --color=always ---presume-output-tty a b > fifo test $? = 141 || fail=1 It is possible that the "head" command takes (sometimes) more than one second to complete on ppc64el? Are there any other places in the test where a race condition could be happening? Thanks.
Santiago Vila <sanvila@HIDDEN>:bug-diffutils@HIDDEN.
Full text available.bug-diffutils@HIDDEN:bug#34519; Package diffutils.
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