From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32919 invoked by alias); 30 Jan 2020 21:05:20 -0000 Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Received: (qmail 32828 invoked by uid 89); 30 Jan 2020 21:05:20 -0000 Authentication-Results: sourceware.org; auth=none X-Spam-SWARE-Status: No, score=-3.3 required=5.0 tests=AWL,BAYES_00,KAM_SHORT,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 spammy=HX-Languages-Length:1623 X-HELO: smtp-out-no.shaw.ca Received: from smtp-out-no.shaw.ca (HELO smtp-out-no.shaw.ca) (64.59.134.12) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Thu, 30 Jan 2020 21:05:17 +0000 Received: from [192.168.1.114] ([24.64.172.44]) by shaw.ca with ESMTP id xGzwiVKiJkqGXxGzxiSI1C; Thu, 30 Jan 2020 14:05:13 -0700 Reply-To: Brian.Inglis@SystematicSw.ab.ca Subject: Re: headache on build repeatibility: octave vs BLODA ? To: cygwin@cygwin.com References: <2904b4fa-6349-bd3e-c4ff-4b32a0bb3838@gmail.com> <87y2tvs278.fsf@Rainer.invalid> <9b370970-fcfe-cca9-321f-973de777642a@gmail.com> <878sluhcc1.fsf@Otto.invalid> <08ac898e-e7f9-c8e9-91ba-d4ee33f2e27c@gmail.com> <0fb5712c-7d57-d5cb-56b7-3a0d2f44d8a2@gmail.com> <20200127203346.1c8e3657d7283e3aa2c617d8@nifty.ne.jp> <85ddac25-0b4a-5e01-7885-0d2855c37a45@gmail.com> <20200129094427.GI3549@calimero.vinschen.de> <9e66f9f1-109f-7a3c-2c86-abd3ef7fc628@gmail.com> <20200129224653.b3238736661d3c95fc30ee5f@nifty.ne.jp> From: Brian Inglis Message-ID: <3ec4538b-3e45-43cc-b96e-a3b8be17bdb9@SystematicSw.ab.ca> Date: Thu, 30 Jan 2020 21:05:00 -0000 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200129224653.b3238736661d3c95fc30ee5f@nifty.ne.jp> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-IsSubscribed: yes X-SW-Source: 2020-01/txt/msg00318.txt.bz2 On 2020-01-29 06:46, Takashi Yano wrote: > Hi Marco, > > On Wed, 29 Jan 2020 13:19:11 +0100 > Marco Atzeri wrote: >> As Octave uses gnulib, it is possible that the changes in MS are causing >> a different subset of gnulib to be used than before, may be exposing >> a latent bug or race. >> >> Unfortunately my old build tree was polluted by mistake, so I can >> not directly compare a good build tree versus a failing one. > > I found suspicious difference between the working build and the > not-working build. > > The not-working build has fflush.o, fseek.o and fseeko.o in > build/libgnu/.libs > directory, while the working build does not. > > Also, cygoctave-7.dll of not-working build exports rpl_fflush, > rpl_fseek and rpl_fseeko, while that of the working build does > not. > > As a test, I used following patch to forcibly remove the code > setting REPLACE_FSEEKO to 1 in configure script, and rebuilt > octave. This works without segmentation fault. For these to be considered missing or deficient such that they should be provided or replaced gnulib must consider Cygwin lacking support for ANSI C fflush https://www.gnu.org/software/gnulib/MODULES.html#ansic_enh_stdio and POSIX 2008 fseek and fseeko supporting pipes and 4GB in 32 bit mode https://www.gnu.org/software/gnulib/MODULES.html#posix_sup perhaps as a result of incorrect conclusions about Cygwin in autoreconf? -- Take care. Thanks, Brian Inglis, Calgary, Alberta, Canada This email may be disturbing to some readers as it contains too much technical detail. Reader discretion is advised. -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple