From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Emacs 22.1 reproducible crash Date: Wed, 08 Aug 2007 09:04:59 -0400 Message-ID: References: <38018.65621.qm@web88014.mail.re2.yahoo.com> <46B85FA7.4060000@swipnet.se> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1186578353 23073 80.91.229.12 (8 Aug 2007 13:05:53 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 8 Aug 2007 13:05:53 +0000 (UTC) Cc: Gardner Bell , Jan =?iso-8859-1?Q?Dj=E4rv?= , keramida@freebsd.org, emacs-devel@gnu.org To: YAMAMOTO Mitsuharu Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Aug 08 15:05:48 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1IIlDm-0006T0-Dz for ged-emacs-devel@m.gmane.org; Wed, 08 Aug 2007 15:05:17 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IIlDl-0002ys-QE for ged-emacs-devel@m.gmane.org; Wed, 08 Aug 2007 09:05:05 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IIlDj-0002yc-0l for emacs-devel@gnu.org; Wed, 08 Aug 2007 09:05:03 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IIlDh-0002yP-Ru for emacs-devel@gnu.org; Wed, 08 Aug 2007 09:05:01 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IIlDh-0002yM-M4 for emacs-devel@gnu.org; Wed, 08 Aug 2007 09:05:01 -0400 Original-Received: from tomts40.bellnexxia.net ([209.226.175.97] helo=tomts40-srv.bellnexxia.net) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1IIlDg-0000f0-VG for emacs-devel@gnu.org; Wed, 08 Aug 2007 09:05:01 -0400 Original-Received: from pastel.home ([70.53.193.128]) by tomts40-srv.bellnexxia.net (InterMail vM.5.01.06.13 201-253-122-130-113-20050324) with ESMTP id <20070808130500.FBUC29719.tomts40-srv.bellnexxia.net@pastel.home> for ; Wed, 8 Aug 2007 09:05:00 -0400 Original-Received: by pastel.home (Postfix, from userid 20848) id E8EA8856D; Wed, 8 Aug 2007 09:04:59 -0400 (EDT) In-Reply-To: (YAMAMOTO Mitsuharu's message of "Wed\, 08 Aug 2007 13\:30\:53 +0900") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.1.50 (gnu/linux) X-Detected-Kernel: Solaris 8 (1) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:76197 Archived-At: >> Can the result be freed by passing it to `free'? >> That's a very important part of the spec. > Yes. The function `memalign', which is also implemented in gmalloc.c, > records the original return value of `malloc' in the linear list > starting from `_aligned_blocks', and `free' looks through it first. Good. (I guess the overhead of searching through a linear list shouldn't be too much problem, although we may end up having many aligned blocks). Then after installing the above change, we should fix the logic in alloc.c: /* Use posix_memalloc if the system has it and we're using the system's malloc (because our gmalloc.c routines don't have posix_memalign although its memalloc could be used). */ #if defined (HAVE_POSIX_MEMALIGN) && defined (SYSTEM_MALLOC) #define USE_POSIX_MEMALIGN 1 #endif -- Stefan