GNU bug report logs - #7186
Emacs segfaults during compile with -fstack-protector-all

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Package: emacs;

Reported by: William Throwe <wthrowe <at> MIT.EDU>

Date: Sun, 10 Oct 2010 18:54:02 UTC

Severity: important

Tags: patch

Done: Chong Yidong <cyd <at> stupidchicken.com>

Bug is archived. No further changes may be made.

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Report forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#7186; Package emacs. (Sun, 10 Oct 2010 18:54:02 GMT) Full text and rfc822 format available.
Acknowledgement sent to William Throwe <wthrowe <at> MIT.EDU>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs <at> gnu.org. (Sun, 10 Oct 2010 18:54:02 GMT) Full text and rfc822 format available.

Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: William Throwe <wthrowe <at> MIT.EDU>
To: bug-gnu-emacs <at> gnu.org
Subject: Emacs segfaults during compile with -fstack-protector-all
Date: Sun, 10 Oct 2010 14:54:43 -0400

make[2]: Leaving directory
`/var/tmp/portage/app-editors/emacs-23.2/work/emacs-23.2/lisp'
`/bin/pwd`/temacs --batch --load loadup bootstrap
make[1]: *** [bootstrap-emacs] Segmentation fault
make[1]: Leaving directory
`/var/tmp/portage/app-editors/emacs-23.2/work/emacs-23.2/src'

This is emacs 23.2 on Linux (Gentoo) x86 with gcc 4.4.3

A backtrace and other info can be found at
https://bugs.gentoo.org/show_bug.cgi?id=294479
(in particular see comment 4)
Information forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#7186; Package emacs. (Sun, 10 Oct 2010 21:07:01 GMT) Full text and rfc822 format available.

Message #8 received at 7186 <at> debbugs.gnu.org (full text, mbox):

From: William Throwe <wthrowe <at> MIT.EDU>
To: 7186 <at> debbugs.gnu.org
Subject: Patch
Date: Sun, 10 Oct 2010 17:10:15 -0400

SSP can reorder function arguments, so the function args can't be
treated as an array if it is enabled.  Simple patch fixing the problem
follows.

*** emacs-23.2/src/m/intel386.h Sat Apr  3 18:26:07 2010
--- emacs-23.2.patch/src/m/intel386.h   Sun Oct 10 16:36:31 2010
***************
*** 103,107 ****
--- 103,111 ----
  #define SEGMENT_MASK ((SEGMENT_SIZE)-1)
  #endif

+ #ifdef __SSP_ALL__
+ #define NO_ARG_ARRAY
+ #endif
+
  /* arch-tag: 746338f0-cb7b-4f49-a98c-cb50817cf2ec
     (do not change this comment) */
Information forwarded to owner <at> debbugs.gnu.org, bug-gnu-emacs <at> gnu.org:
bug#7186; Package emacs. (Fri, 28 Jan 2011 17:01:02 GMT) Full text and rfc822 format available.

Message #11 received at 7186 <at> debbugs.gnu.org (full text, mbox):

From: Chong Yidong <cyd <at> stupidchicken.com>
To: William Throwe <wthrowe <at> MIT.EDU>
Cc: 7186 <at> debbugs.gnu.org
Subject: Re: Emacs segfaults during compile with -fstack-protector-all
Date: Fri, 28 Jan 2011 12:09:02 -0500

I've committed a patch to the branch that turns on NO_ARG_ARRAY
unconditionally.  Thanks.
bug closed, send any further explanations to William Throwe <wthrowe <at> MIT.EDU> Request was from Chong Yidong <cyd <at> stupidchicken.com> to control <at> debbugs.gnu.org. (Fri, 28 Jan 2011 17:02:01 GMT) Full text and rfc822 format available.
bug archived. Request was from Debbugs Internal Request <help-debbugs <at> gnu.org> to internal_control <at> debbugs.gnu.org. (Sat, 26 Feb 2011 12:24:05 GMT) Full text and rfc822 format available.
This bug report was last modified 13 years and 71 days ago.

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