From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Noam Postavsky Newsgroups: gmane.emacs.devel Subject: Re: Segfault during fontification of rgrep buffers [HELP NEEDED] Date: Wed, 26 Oct 2016 14:36:33 -0400 Message-ID: References: NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: blaine.gmane.org 1477507018 4804 195.159.176.226 (26 Oct 2016 18:36:58 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 26 Oct 2016 18:36:58 +0000 (UTC) Cc: Emacs developers To: Herwig Hochleitner Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Oct 26 20:36:50 2016 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bzT43-0007Y2-Bn for ged-emacs-devel@m.gmane.org; Wed, 26 Oct 2016 20:36:39 +0200 Original-Received: from localhost ([::1]:36782 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzT45-0001Bf-Ui for ged-emacs-devel@m.gmane.org; Wed, 26 Oct 2016 14:36:41 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:50882) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bzT3z-0001BK-Er for emacs-devel@gnu.org; Wed, 26 Oct 2016 14:36:36 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bzT3y-0001KU-IQ for emacs-devel@gnu.org; Wed, 26 Oct 2016 14:36:35 -0400 Original-Received: from mail-oi0-x230.google.com ([2607:f8b0:4003:c06::230]:35311) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1bzT3y-0001KJ-Bj for emacs-devel@gnu.org; Wed, 26 Oct 2016 14:36:34 -0400 Original-Received: by mail-oi0-x230.google.com with SMTP id i127so4751373oia.2 for ; Wed, 26 Oct 2016 11:36:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:from:date:message-id :subject:to:cc; bh=DgnnSRSdqRsyLL+Ovo4fT139ya5vij0cdlyxIYqLb1A=; b=DthC1i3SWY3WcJ9xR5mt1jT7DDU3Kyro+B9NZII4eyxNaimCh+Zr5dXIZjg2h4ehvF Be/5CBu0aQ2dwSvoXoZ5HbWTj3Rockfybrlc52pLB4zg+nejuuSaA3usr5tZu+pTy8dA +8pthjOALs/b13XT517j4HvzUm3kJ1oRS/2WAWQbBBNXY92WoG0+T2ZT66H6WXitXbSl pS/bAZ4uBsbZ0a6tYU6uAAlnx3RMMR9mLUIlbB4cXQ9D51HSl4ha+X0OA4ntvwDpLHPs /sG1mWAibsh1A7INMpNhXaMlO4aSOt4qbi9b95Lc3MKwZL+XFQsL8n0n6KXRHbv/I9jM YUfw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:from :date:message-id:subject:to:cc; bh=DgnnSRSdqRsyLL+Ovo4fT139ya5vij0cdlyxIYqLb1A=; b=NPQgwLx/C30E+GsfwhZVzzFYC2lY5B8vjobNBeTLFlux0ifrYmU4X0BhnywqPre4KS rxwlBoJ1uhpQcHNM2ZQCj35x6MjAnkhnngjv8TecL+4W0Rw+cdQsSTYV6UYlNMHAm3T1 L5hNcsSSEH1XNuc2Pudr+6Ev+F0sY7qKVVP9lDi4y0FpM4KicXc4vTZFNzmBU6lvGYN0 mi1WYZTNN5AXZAGfC88NY4XrHRF+jFcJtnDcicTqCJ+miamEao+JPG/gS95xuVtve7ZX JSJfIjXtGCkGGmitpyG8+FXiTy5BbR59qkMjTtQUhTCYgKaZtiru4PmIAd+Yjk9CIoyw KrZQ== X-Gm-Message-State: ABUngvc+SqU77JNBoqVwaVipk+8KeXonITUHrIcGhhfbepTZ0bRdrnsAGceRA27VrzhW0RdJ0w77SOjrnDZ/JQ== X-Received: by 10.157.7.231 with SMTP id 94mr2810338oto.2.1477506993522; Wed, 26 Oct 2016 11:36:33 -0700 (PDT) Original-Received: by 10.157.29.239 with HTTP; Wed, 26 Oct 2016 11:36:33 -0700 (PDT) In-Reply-To: X-Google-Sender-Auth: ym1p_Dc6F6AZc5-TNeTx9jZ1RwA X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2607:f8b0:4003:c06::230 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:208850 Archived-At: On Wed, Oct 26, 2016 at 12:09 PM, Herwig Hochleitner wrote: > Hi, > > I've been hunting a segfault during usage of rgrep for some time, now I've > managed to catch it in gdb. From the looks of it, BEGV_ADDR is changed > during a single run of search_buffer, which leaves a stale pointer in a > local variable. This is almost certainly the same bug as #24358. You can try building with REL_ALLOC=no, or applying https://debbugs.gnu.org/cgi/bugreport.cgi?msg=225;att=2;bug=24358;filename=v4-0002-Inhibit-buffer-relocation-during-regex-searches.patch.