From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.bugs Subject: bug#20614: Segmentation fault when building on Power8 Little Endian Date: Fri, 02 Oct 2015 16:46:23 +0300 Message-ID: <83wpv55qog.fsf@gnu.org> References: <555C3E3C.4090700@redhat.com> <1gpp5vi5xn.fsf@fencepost.gnu.org> <555DD5D3.3020207@redhat.com> <55A3A08A.9060905@redhat.com> <55A4BFB7.3010208@redhat.com> <55F95275.4040209@redhat.com> <56012AA6.7010702@redhat.com> <56025D9A.9080608@redhat.com> <838u7xlbsn.fsf@gnu.org> <56028633.3000303@redhat.com> <83zj0djskx.fsf@gnu.org> <56029707.9040100@redhat.com> <83wpvhjpdd.fsf@gnu.org> <5603D8BE.10300@redhat.com> <834mijkf36.fsf@gnu.org> <56043950.7040108@redhat.com> <83k2rdhaso.fsf@gnu.org> <560BBBF3.6000407@redhat.com> <83r3lf9gq4.fsf@gnu.org> <560D1EAA.3080608@redhat.com> <83bnciaidw.fsf@gnu.org> <560D3DC5.2050804@redhat.com> <837fn6a881.fsf@gnu.org> <560E420B.9070200@redhat.com> <83d1wx7j0e.fsf@gnu.org> <560E7F90.1070609@redhat.com> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1443799036 25260 80.91.229.3 (2 Oct 2015 15:17:16 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 2 Oct 2015 15:17:16 +0000 (UTC) Cc: 20614@debbugs.gnu.org To: Petr Hracek Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Fri Oct 02 17:16:59 2015 Return-path: Envelope-to: geb-bug-gnu-emacs@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 1Zi24t-0007jN-M3 for geb-bug-gnu-emacs@m.gmane.org; Fri, 02 Oct 2015 17:16:55 +0200 Original-Received: from localhost ([::1]:60617 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zi24t-00084v-6V for geb-bug-gnu-emacs@m.gmane.org; Fri, 02 Oct 2015 11:16:55 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:54279) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zi0fx-0005Ur-TP for bug-gnu-emacs@gnu.org; Fri, 02 Oct 2015 09:47:06 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zi0fu-0001GW-MC for bug-gnu-emacs@gnu.org; Fri, 02 Oct 2015 09:47:05 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:34187) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zi0fu-0001GN-KF for bug-gnu-emacs@gnu.org; Fri, 02 Oct 2015 09:47:02 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.80) (envelope-from ) id 1Zi0fu-0006co-CH for bug-gnu-emacs@gnu.org; Fri, 02 Oct 2015 09:47:02 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Eli Zaretskii Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Fri, 02 Oct 2015 13:47:02 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 20614 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 20614-submit@debbugs.gnu.org id=B20614.144379359825435 (code B ref 20614); Fri, 02 Oct 2015 13:47:02 +0000 Original-Received: (at 20614) by debbugs.gnu.org; 2 Oct 2015 13:46:38 +0000 Original-Received: from localhost ([127.0.0.1]:51391 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Zi0fV-0006cA-Ca for submit@debbugs.gnu.org; Fri, 02 Oct 2015 09:46:37 -0400 Original-Received: from mtaout22.012.net.il ([80.179.55.172]:33141) by debbugs.gnu.org with esmtp (Exim 4.80) (envelope-from ) id 1Zi0fQ-0006bz-Ky for 20614@debbugs.gnu.org; Fri, 02 Oct 2015 09:46:34 -0400 Original-Received: from conversion-daemon.a-mtaout22.012.net.il by a-mtaout22.012.net.il (HyperSendmail v2007.08) id <0NVL00J00I4POL00@a-mtaout22.012.net.il> for 20614@debbugs.gnu.org; Fri, 02 Oct 2015 16:46:31 +0300 (IDT) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by a-mtaout22.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NVL00JX8I9IFQ80@a-mtaout22.012.net.il>; Fri, 02 Oct 2015 16:46:31 +0300 (IDT) In-reply-to: <560E7F90.1070609@redhat.com> X-012-Sender: halo1@inter.net.il X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.15 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.bugs:107213 Archived-At: > Cc: 20614@debbugs.gnu.org > From: Petr Hracek > Date: Fri, 2 Oct 2015 14:58:56 +0200 > > On 10/02/2015 10:49 AM, Eli Zaretskii wrote: > >> Cc: 20614@debbugs.gnu.org > >> From: Petr Hracek > >> Date: Fri, 2 Oct 2015 10:36:27 +0200 > >> > >> What does this GDB command display in frame #1: > >> > >> (gdb) p old_section_names + NEW_SECTION_H (nn).sh_name > >> > >> ? > >> > >> It is a really strange. > >> in our unexelf.c is NEW_SECTION_H defined as > >> > >> #define NEW_SECTION_H(n) \ > >> (*(ElfW (Shdr) *) ((byte *) new_section_h + new_file_h->e_shentsize * (n))) > >> > >> Paul Eggert did a some patch 1 or 2 year ago and modify it to > >> #define NEW_SECTION_H(n) \ > >> (*(ElfW (Shdr) *) entry_address (new_section_h, n, new_file_h->e_shentsize)) > >> > >> (gdb) frame 1 > >> #1 0x00000000102e3724 in unexec (new_name=0x116387e8 > >> "/home/phracek/rpmbuild/BUILD/emacs-24.3/src/emacs", old_name=0x11638838 > >> "/home/phracek/rpmbuild/BUILD/emacs-24.3/src/temacs") > >> at unexelf.c:1258 > >> 1258 if (!strcmp (old_section_names + NEW_SECTION_H (nn).sh_name, ".data") > >> (gdb) p old_section_names > >> $1 = 0x3fffab1dbfcc "" > >> (gdb) p old_section_names + NEW_SECTION_H (nn).sh_name > >> No symbol "NEW_SECTION_H" in current context. > > Use the expansion of that macro instead to display the value. > How to use the expansion. Just type it by hand: (gdb) p old_section_names + (*(ElfW (Shdr) *) ((byte *) new_section_h + new_file_h->e_shentsize * (nn))) > Are you connected on freenode #emacs. No.