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:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-type; q=dns; s=default; b=r9bb ArBxPy8tUEU4VhCkSvMXt12WgL1rNOzGZszJXpVXnY24iuf46P7VUq0+FixID4d8 ipDHQblpsqrWpTbiDRlCeBVV7xznWLl8gdqtWAVKbA0xPDd9sHIEPzjcgF1cLQHo xU/dV36wknL2KMdbGUWr1KsEqpVJOkukKnR4E+0= 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:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-type; s=default; bh=0W/E60sOLj fljZ0XsaR8LPf+p7o=; b=l1YURsZQLNFsGiPRd96Hfz0BfhIdOdzej9RHqbi7XO 8NXe1DOYyHHVrxwyFytO2ze7j+SVYkn0FYntK3Wp6xC7SUy2ns/ft6CDbm8NHesS lh1ZFTzVdDIbQEljUFCYP8Wl/TjivVdoJT7/94Uxd4xEkCwQ5ZU9dRsy7bhtIXkv c= 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-Spam-SWARE-Status: No, score=-2.2 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,HTML_MESSAGE,RCVD_IN_DNSWL_NONE,SPF_PASS autolearn=ham version=3.3.1 spammy=H*c:alternative, View, uploaded X-HELO: mail-lf1-f66.google.com DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=yDwlvpluOpTw//rrkBa+Iv2GZpvoc0jlXuv9zd0+6r4=; b=soezLujd7arJLRAarHgf0WeklKBCtM+IlQVrZH509kKixMNtXSXyYeYEDEyk1Td/J3 LOwLAwcHR4C8QStt6k1n4R3opqlLdGQWEDlXLWjTiHrJ+TpG8gJxHyZ3CT7gSuGl8qE1 imQk1G2H6MCKKZGF95F6vMjjU0IPggPeMOH70jND0tl48oOjy5q78pPnWBKkie1kttFq LehdXOzThWPtSjvi8Jt5fpJVXaKqifMii4Rjn7RgUpBpiW/4fyG+xzPs+DR6m10C9kqB fVv7eirHV31fSPyUxW+0o/dRrev7/Ay2hVw6cOG2rL89ovuNzSleM6jeYjSQIT3tiAv2 HtiQ== MIME-Version: 1.0 References: <5fa8b89e-1a9d-2619-f49f-c1680d587148 AT dronecode DOT org DOT uk> In-Reply-To: <5fa8b89e-1a9d-2619-f49f-c1680d587148@dronecode.org.uk> From: Philippe Date: Sun, 23 Jun 2019 20:41:01 +0200 Message-ID: Subject: Re: Bug in libX11 or something near ? To: Jon Turney Cc: The Cygwin Mailing List Content-Type: text/plain; charset="UTF-8" X-IsSubscribed: yes Hi Jon, glad to view an answer ! Just for your information, since I posted, I did some others tests, and I can reproduce it with k3b (which use qt4) but NOT with kcalc (which use qt5). Then I tried some little python tests from Envisage for qt5 and wasn't able to reproduce this crash. So I guess there's something wrong with qt4. Tomorrow I'll try your snapshot to confirm or not your fix ! Thanks for your time. On Sun, Jun 23, 2019 at 7:57 PM Jon Turney wrote: > On 18/06/2019 17:07, Philippe wrote: > > I'm using Cygwin/X and identified a critical bug using some piece of > > software. > > I don't really know where to begin, but I'm able to crash some > applications > > via the application's menu, only with Cygwin/X (no crash with Xming, and > no > > crash under any Linux distributions). > > > > For information, It goes through VirtualGL. I'll give the example on how > to > > reproduce it with a free software : Paraview (under linux). > > > > So you open Paraview, then clic on "View" > show the "Toolbars" submenu, > > then you move your mouse directly on the "Sources" or "Edit" menu, then > it > > crashes immediately. The only error message in the linux shell (from > where > > it was launched) is "paraview: Fatal IO error: client killed". > > > > I got those lines in the XWin.0.log file : > > SetupSysMenu: GetSystemMenu() failed for HWND 0x130746 > > winTopLevelWindowProc - WM_DESTROY - WM_WM_KILL > > Thanks for reporting this problem, and the clear reproduction steps. > > This is an interesting bug in the Cygwin X server's multiwindow mode. It > seems that under some circumstances, when removing a WM_TRANSIENT_FOR > window which in turn had a child WM_TRANSIENT_FOR window (e.g. a menu > which has a sub-menu), the X server's integrated WM would get confused > and think that the main window had been closed (so terminating the > application). > > I've has a go at fixing this and uploaded a snapshot at [1]. Perhaps > you could try that and see if it improves things for you? > > (I guessed you are using 64-bit Cygwin. If you need a 32-bit build > instead, please let me know and I'll generate one) > > [1] > > ftp://cygwin.com/pub/cygwinx/x86_64/XWin.20190623-git-210c90b328cf8f18.exe.bz2 > > -- > Jon Turney > Volunteer Cygwin/X X Server maintainer > -- 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