X-Recipient: archive-cygwin AT delorie DOT com DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; q=dns; s=default; b=t6zrSs6zjjHEdBcf HoH9OkfnsslLN8K2HOSqp3SedW96JRvehAgLIEqLWLZ3aP96kn6CpGM8lFfp/fDs wSzac5mzZcd/5WJNn3FkmJezSigb7+xt+xr8AaLw3KjyszHaaOoRvaAX67IVeeET LXZ6p3iCrMToGSLG5Q0WEeEqP50= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id :list-unsubscribe:list-subscribe:list-archive:list-post :list-help:sender:subject:to:references:from:message-id:date :mime-version:in-reply-to:content-type :content-transfer-encoding; s=default; bh=euKzH9txh/3KNffFnpcSoW MmEU0=; b=lxASSbZg0v+FyWNVV2mkYZSZs44rZVQ3Ew4xzJIySEIF+ZcEixUs56 WJQdMbWleJjZP3pSJMdrhNcdEDPGzVQtsDoDwr8+rjrDIe/Uhs0EJlxSO4CdbJ+p dc8fy/d1V2mE4J5HuRe4UH9Yb9G/yh+tuLlSEbfiUhpuIAErtmCMQ= Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT cygwin DOT com Mail-Followup-To: cygwin AT cygwin DOT com Delivered-To: mailing list cygwin AT cygwin DOT com Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.0 required=5.0 tests=AWL,BAYES_50,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 spammy=Octave, panic, octave, plotting X-HELO: mail-wm0-f50.google.com X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=4oKkMkaScL1jkgNQOIs7/3pw9RvsuiP41a0heHLZ9xo=; b=TEZVktWu2ivXxAEhEKOxTUuvIJg4OezRYQWFlOyCfSR0miXViwmUIlot/NBj9u379c xRE0fALGAX99VNRZg/utmXo8HizHTcdS8iRJPjR2Yu5c2m4Jz/R9g8wMf66NnS9KYKhU mbqOHJj9kIQ+MHK35Tf/IpR5tw+3pJMeS3yXdsZxIQHtPYzbEVrXnz/7WWvnf+NXikuk 9eJq/nj6QS9nsbnyNrcbwA0mk5SltjTCHCEGh2EdqZxwAvvU/mxKCUMFOeo5S8b+v70Q lu8P91Gx87RRxSYxpWJ07Q/lDTgFNoCEuLwnnWI+m9F0roohB+2Pjg4fpZa6wjkixFqN In8Q== X-Gm-Message-State: AOPr4FUmRj69DRkMjn2a2v0jTyFHOcr+Nin9Y/AvfYrfhXCjqwXqs8K5L38KWjZ0ABs0sA== X-Received: by 10.194.95.198 with SMTP id dm6mr3095310wjb.136.1460458431166; Tue, 12 Apr 2016 03:53:51 -0700 (PDT) Subject: Re: Octave segmentation fault when plotting graph To: cygwin AT cygwin DOT com References: <2503-1460456791-643904 AT sneakemail DOT com> From: Marco Atzeri Message-ID: <570CD3BD.7090402@gmail.com> Date: Tue, 12 Apr 2016 12:53:49 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 In-Reply-To: <2503-1460456791-643904@sneakemail.com> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-IsSubscribed: yes On 12/04/2016 12:26, Stephen Wilkinson wrote: > Following a recent Cygwin update, I get segmentation faults when I try to plot graphs in Octave. Creating the figure window works (i.e. issuing the command "figure" doesn't cause the crash, it is only when plotting within the figure that I get a crash). I use the Octave command "sombrero" to test the plotting of data, but even simpler commands ("plot(1:10,1:10);") cause the crash. The crash occurs whether using the fltk or qt graphics toolkit. > > I'm using: > Octave: GNU Octave, version 4.0.1 > Cygwin: CYGWIN_NT-6.1-WOW OEM-9D7L362 2.5.0(0.297/5/3) 2016-04-11 09:55 i686 Cygwin > > The command I issue in Octave is: >>> sombrero > And I get this error message: >>> panic: Segmentation fault -- stopping myself... > attempting to save variables to 'octave-workspace'... > save to 'octave-workspace' complete > > I ran strace to try to debug the problem. The strace output is too large (MB) to attach, but comparing strace for a normal termination of octave (run octave, create a figure but without plotting) and a segmentation fault termination of octave (run octave, issue command "sombrero"), I see that a segmentation fault causes "threads exited with status 0xc0000005". However I don't know how to debug this any further. > > I attach the output of cygcheck -s -v -r > > Any suggestions on how to debug this further or how to fix it would be very welcome! I have tried downgrading octave and qt but to no avail. > > Regards, > Steve > confirmed for 32bit only. 64 bit version seems to work normally. As workaround "graphics_toolkit gnuplot" does not crash, for what I see. Did you ever had any problem on 4.0.0 ? Regards Marco -- 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