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Bug 49226 - etc-update triggers segmentation fault with sdiff on PPC
Summary: etc-update triggers segmentation fault with sdiff on PPC
Status: RESOLVED FIXED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: PPC Linux
: High major (vote)
Assignee: PPC Porters
URL:
Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2004-04-27 18:03 UTC by Andy Romeril
Modified: 2004-06-02 13:24 UTC (History)
0 users

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Package list:
Runtime testing required: ---

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Description Andy Romeril 2004-04-27 18:03:24 UTC 
After installing Gentoo 2004.0 on a Powermac G4 (GRP), I did:

  'emerge sync; emerge portage; emerge -uD system' 

When complete, I ran 'etc-update' to merge config file changes.  When selecting the option to perform an interactive merge of the update and the original file, I get a segfault in 'sdiff' that matches the one reported in Bug #13502.  

A comment in this bug notes that 'sdiff' will segfault on PPC when both '-maltivec and -mabi=altivec' are specified in CFLAGS. Well, OK -- I dropped '-mabi=altivec' and re-emerged 'diffutils' and the problem goes away.

My issue is that these CFLAGS are the DEFAULT for Gentoo 2004.0 on PPC for a G4 processor.  Therefore, I feel that the ebuild for "diffutils" should be updated to catch the offending CFLAGS condition and drop one of them to prevent this from happening.  This will help mere mortals who don't know how to use Bugzilla.


Reproducible: Always
Steps to Reproduce:
1. emerge sync; emerge portage; emerge -uD system
2. etc-update
   - pick a file to update
   - select (3) to interactively merge changes


Actual Results:  
Get a segfault in sdiff.

Expected Results:  
Display two files' changes side-by-side.

My 'emerge info' (pre-workaround):

Portage 2.0.50-r6 (default-ppc-2004.0, gcc-3.2.3, glibc-2.3.2-r9, 2.4.24-ppc-r2)
=================================================================
System uname: 2.4.24-ppc-r2 ppc 7400, altivec supported
Gentoo Base System version 1.4.9
Autoconf: sys-devel/autoconf-2.58-r1
Automake: sys-devel/automake-1.8.3
ACCEPT_KEYWORDS="ppc"
AUTOCLEAN="yes"
CFLAGS="-O2 -pipe -mcpu=7400 -maltivec -mabi=altivec"
CHOST="powerpc-unknown-linux-gnu"
COMPILER="gcc3"
CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config
/usr/kde/3/share/config /usr/lib/mozilla/defaults/pref /usr/share/config
/var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O2 -pipe -mcpu=7400 -maltivec -mabi=altivec"
DISTDIR="/usr/portage/distfiles"
FEATURES="buildpkg ccache userpriv usersandbox"
GENTOO_MIRRORS="http://software/Linux/gentoo http://gentoo.oregonstate.edu
http://www.ibiblio.org/pub/Linux/distributions/gentoo"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY=""
SYNC="rsync://qadiag2.viewstar.com/gentoo-portage"
USE="X berkdb cups dvd esd foomaticdb gdbm gif gnome gpm gtk gtk2 imlib jpeg kde
libwww mitshm motif mozilla nls oggvorbis opengl oss pam perl png ppc python qt
readline sdl slang ssl tcpd truetype xv"
Comment 1 Pieter Van den Abeele (RETIRED) gentoo-dev 2004-06-02 13:24:46 UTC 
newest diffutils fixes this bug.