From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Andy Moreton Newsgroups: gmane.emacs.devel Subject: Re: Build failure for Emacs master Date: Fri, 15 Apr 2016 16:36:14 +0100 Message-ID: References: <56CCD91E.6070507@alice.it> <56CD8408.1000701@alice.it> <83wppuggb4.fsf@gnu.org> <56CE2CA7.5050906@alice.it> <83io1cg2pt.fsf@gnu.org> <56DA0327.2030009@alice.it> <83oaatxu72.fsf@gnu.org> <570C4307.6050907@alice.it> <83k2k2g82s.fsf@gnu.org> <86egaa7b0z.fsf@gmail.com> <83a8kyfd38.fsf@gnu.org> <86lh4hm7dd.fsf@gmail.com> <83oa9cdu7l.fsf@gnu.org> <83k2k0dqtg.fsf@gnu.org> <83fuuodm1q.fsf@gnu.org> <864mb4j5lw.fsf@gmail.com> <837ffze3dx.fsf@gnu.org> <86k2jzgu8d.fsf@gmail.com> <83r3e7c4yn.fsf@gnu.org> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1460734603 5830 80.91.229.3 (15 Apr 2016 15:36:43 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 15 Apr 2016 15:36:43 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri Apr 15 17:36:37 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ar5nP-00042P-Kq for ged-emacs-devel@m.gmane.org; Fri, 15 Apr 2016 17:36:35 +0200 Original-Received: from localhost ([::1]:36392 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ar5nP-00065b-3a for ged-emacs-devel@m.gmane.org; Fri, 15 Apr 2016 11:36:35 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39946) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ar5nK-000602-11 for emacs-devel@gnu.org; Fri, 15 Apr 2016 11:36:30 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ar5nF-0002a0-1B for emacs-devel@gnu.org; Fri, 15 Apr 2016 11:36:29 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:48848) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ar5nE-0002Zp-RL for emacs-devel@gnu.org; Fri, 15 Apr 2016 11:36:24 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ar5nC-0003r7-3H for emacs-devel@gnu.org; Fri, 15 Apr 2016 17:36:22 +0200 Original-Received: from uk.solarflare.com ([193.34.186.16]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 15 Apr 2016 17:36:22 +0200 Original-Received: from andrewjmoreton by uk.solarflare.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 15 Apr 2016 17:36:22 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 26 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: uk.solarflare.com User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.92 (windows-nt) Cancel-Lock: sha1:GAGgRl5KQtaPsew+Eja8UY92Gx8= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:202958 Archived-At: On Fri 15 Apr 2016, Eli Zaretskii wrote: >> From: Andy Moreton >> Date: Fri, 15 Apr 2016 09:18:58 +0100 >> >> No, but changing the content of ldefs-boot.el can change the timing and >> behaviour of the bootstrap-emacs.exe that is built from it. Whether the >> observed bug is timing related or completely deterministic is not yet >> known. > > I've just fixed on the emacs-25 branch a serious bug in the w32 > implementation of mmap_realloc. The conditions under which the bug > happened are very rare, but when it did happen, we would in effect > lose a portion of buffer text, and instead get binary nulls. Sounds > familiar? > > So please try reproducing your problem after updating the repository > from upstream, I hope that the problems will be gone. (If you are > tracking master, wait until ab849b7 is merged to it, or apply it > manually.) I've tried boostrapping a completely clean emacs-25 tree at commit ab849b7, which was successful. Yuor patch looks good, so let's hope this problem is gone. AndyM