From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=) Newsgroups: gmane.lisp.guile.bugs Subject: bug#11845: guile-1.8.8 segfaults at build-time with gcc-4.6.3 and -O3 Date: Tue, 03 Jul 2012 12:07:47 +0200 Message-ID: <87mx3hnong.fsf@gnu.org> References: <4FF1EA37.8080909@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1341310123 8925 80.91.229.3 (3 Jul 2012 10:08:43 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 3 Jul 2012 10:08:43 +0000 (UTC) Cc: 11845@debbugs.gnu.org To: Cyprien Nicolas Original-X-From: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Tue Jul 03 12:08:40 2012 Return-path: Envelope-to: guile-bugs@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 1Sm029-0003e1-BW for guile-bugs@m.gmane.org; Tue, 03 Jul 2012 12:08:37 +0200 Original-Received: from localhost ([::1]:43494 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm028-0001B9-5R for guile-bugs@m.gmane.org; Tue, 03 Jul 2012 06:08:36 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:51497) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm01z-0001Al-7O for bug-guile@gnu.org; Tue, 03 Jul 2012 06:08:35 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Sm01u-0000oV-Bc for bug-guile@gnu.org; Tue, 03 Jul 2012 06:08:26 -0400 Original-Received: from debbugs.gnu.org ([140.186.70.43]:34898) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Sm01u-0000oJ-8a for bug-guile@gnu.org; Tue, 03 Jul 2012 06:08:22 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.72) (envelope-from ) id 1Sm06Q-00029k-C2 for bug-guile@gnu.org; Tue, 03 Jul 2012 06:13:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: ludo@gnu.org (Ludovic =?UTF-8?Q?Court=C3=A8s?=) Original-Sender: debbugs-submit-bounces@debbugs.gnu.org Resent-CC: bug-guile@gnu.org Resent-Date: Tue, 03 Jul 2012 10:13:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 11845 X-GNU-PR-Package: guile X-GNU-PR-Keywords: Original-Received: via spool by 11845-submit@debbugs.gnu.org id=B11845.13413103538252 (code B ref 11845); Tue, 03 Jul 2012 10:13:02 +0000 Original-Received: (at 11845) by debbugs.gnu.org; 3 Jul 2012 10:12:33 +0000 Original-Received: from localhost ([127.0.0.1]:44442 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1Sm05w-000293-W9 for submit@debbugs.gnu.org; Tue, 03 Jul 2012 06:12:33 -0400 Original-Received: from xanadu.aquilenet.fr ([88.191.123.111]:40560) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from ) id 1Sm05u-00028t-Bj for 11845@debbugs.gnu.org; Tue, 03 Jul 2012 06:12:31 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by xanadu.aquilenet.fr (Postfix) with ESMTP id 4E7D9870A; Tue, 3 Jul 2012 12:07:49 +0200 (CEST) Original-Received: from xanadu.aquilenet.fr ([127.0.0.1]) by localhost (xanadu.aquilenet.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id edAI+6a32f1m; Tue, 3 Jul 2012 12:07:49 +0200 (CEST) Original-Received: from pluto (reverse-83.fdn.fr [80.67.176.83]) by xanadu.aquilenet.fr (Postfix) with ESMTPSA id B925C8709; Tue, 3 Jul 2012 12:07:48 +0200 (CEST) In-Reply-To: <4FF1EA37.8080909@gmail.com> (Cyprien Nicolas's message of "Mon, 02 Jul 2012 20:36:39 +0200") User-Agent: Gnus/5.130005 (Ma Gnus v0.5) Emacs/24.1 (gnu/linux) X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 2) X-Received-From: 140.186.70.43 X-BeenThere: bug-guile@gnu.org List-Id: "Bug reports for GUILE, GNU's Ubiquitous Extension Language" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Original-Sender: bug-guile-bounces+guile-bugs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.bugs:6379 Archived-At: Hi Cyprien, Cyprien Nicolas skribis: > That define value is computed using the find_stack_direction function > defined in configure.in: > > int > find_stack_direction () > { > static char *addr =3D 0; > auto char dummy; > if (addr =3D=3D 0) > { > addr =3D &dummy; > return find_stack_direction (); > } > else > return (&dummy > addr) ? 1 : -1; > } > > int > main () > { > return find_stack_direction () < 0; > } Guile 2.0 uses this instead: --8<---------------cut here---------------start------------->8--- int find_stack_direction (int *addr, int depth) { int dir, dummy =3D 0; if (! addr) addr =3D &dummy; *addr =3D addr < &dummy ? 1 : addr =3D=3D &dummy ? 0 : -1; dir =3D depth ? find_stack_direction (addr, depth - 1) : 0; return dir + dummy; } int main (int argc, char **argv) { return find_stack_direction (0, argc + !argv + 20) < 0; } --8<---------------cut here---------------end--------------->8--- Can you check whether it works for you? (See also on that topic.) Thanks, Ludo=E2=80=99.