Bugzilla Bug 187634

Am using Firefox 2.0.0.5, but the problem started in previous versions (not
sure which one). 

After upgrading to a fontconfig greater than 2.3.2-r1, Firefox would crash on
many pages (e.g. http://en.wikipedia.org/wiki/Mozilla). Just a plain segfault.
So I had masked all fontconfigs greater than that version. However, I
accidentally upgraded to 2.4.2, and that is now the only one available in
Portage - so I'm stuck with it. 

Way too many sites cause Firefox to crash. Any ideas? I'm not alone in this.
Possibly Bugs 148145 and 118825 are related. Also, the folks on this forum
thread had the same problem:

http://forums.gentoo.org/viewtopic-t-564981-highlight-fontconfig+firefox.html

Problem occurs even in safe mode. Konqueror shows them fine, though. 

Reproducible: Always

Steps to Reproduce:
1.Upgrade to fontconfig-2.4.2
2.Use Firefox to go to Wikipedia's Mozilla page
3.See Firefox crash.

Actual Results:  
Segfault.

Expected Results:  
Should display it fine.

Output of emerge --info:

Portage 2.1.2.11 (default-linux/x86/2006.1/desktop, gcc-3.4.6, glibc-2.5-r4,
2.6.14-gentoo-r2 i686)
=================================================================
System uname: 2.6.14-gentoo-r2 i686 Intel(R) Pentium(R) 4 CPU 2.53GHz
Gentoo Base System release 1.12.9
Timestamp of tree: Fri, 03 Aug 2007 17:50:01 +0000
ccache version 2.4 [enabled]
dev-java/java-config: 1.3.7, 2.0.33-r1
dev-lang/python:     2.2.3-r5, 2.3.5-r3, 2.4.4-r4
dev-python/pycrypto: 2.0.1-r6
dev-util/ccache:     2.4-r7
sys-apps/sandbox:    1.2.17
sys-devel/autoconf:  2.13, 2.61
sys-devel/automake:  1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10
sys-devel/binutils:  2.17
sys-devel/gcc-config: 1.3.16
sys-devel/libtool:   1.5.23b
virtual/os-headers:  2.6.21
ACCEPT_KEYWORDS="x86"
AUTOCLEAN="yes"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/lib/mozilla/defaults/pref /usr/share/X11/xkb
/usr/share/config"
CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf
/etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/
/etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo
/etc/texmf/web2c"
CXXFLAGS="-march=pentium4 -O3 -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="ccache distlocks fixpackages metadata-transfer nostrip parallel-fetch
sandbox sfperms strict"
GENTOO_MIRRORS="ftp://gentoo.mirrors.pair.com/
http://mirror.datapipe.net/gentoo http://open-systems.ufl.edu/mirrors/gentoo
http://ftp.heanet.ie/pub/gentoo/ ftp://pandemonium.tiscali.de/pub/gentoo/"
LINGUAS="en ar"
PKGDIR="/usr/portage/packages"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress
--force --whole-file --delete --delete-after --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages
--filter=H_**/files/digest-*"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/portage/local/layman/sunrise
/usr/portage/local/layman/xeffects /usr/local/bmg-main"
SYNC="rsync://rsync.us.gentoo.org/gentoo-portage"
USE="7zip X a52 aac aalib acpi aim alsa apache2 apm asf avi berkdb bitmap-fonts
bittorrent browserplugin cairo caps cdparanoia cdr cli cracklib crypt cups cvs
dbus dga directfb divx4linux doc dri dvb dvd dvdnav dvdr dvdread eds emacs
emboss encode exif fam fbcon fbdev ffmpeg firefox flac fortran ftp gd gdbm gif
gimp glitz gnutella gphoto2 gpm gstreamer gtk guile hal hdri i8x0 iconv icq
imagemagick imap imlib ipv6 isdnlog jabber java javascript jpeg jpeg2k justify
kde lame lcms ldap leim libcaca libg++ live mad maildir matroska mbox md5sum
midi mikmod mjpeg mmx mozilla mp2 mp3 mpeg msn mudflap musepack mysql ncurses
network nls nptl nptlonly nsplugin oav ogg oggvorbis openexr opengl openmp
oscar oss pam pcre pda pdf pdflib perl pgp php plotutils png pnm pnp ppds pppd
python qt qt3 qt4 quicktime radio rar readline real reflection rtsp samba sasl
sdl session shout speex spell spl srt sse ssl stream subtitles subversion svg
svga tcpd tetex tga theora tiff tivo truetype truetype-fonts type1-fonts
unicode usb v4l vcd vesa videos vidix vorbis wavpack win32codecs wma wmf
wxwindows x86 xcomposite xine xml xorg xosd xv xvid yahoo zlib"
ALSA_CARDS="intel8x0" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop
empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi
null plug rate route share shm softvol" ELIBC="glibc" INPUT_DEVICES="evdev
keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780
lb216 lcdm001 mtxorb ncurses text" LINGUAS="en ar" USERLAND="GNU"
VIDEO_CARDS="radeon fglrx vesa fbdev"
Unset:  CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LANG, LC_ALL, LDFLAGS,
MAKEOPTS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Created an attachment (id=126835) [details]
strace output of running (in safe mode).

Attached an strace.

Just downloaded firefox-bin (not via Portage) - that works fine - at least in
safe mode. 

i forgot about the wrapper script.  can you run strace directly against
/usr/lib/mozilla-firefox/firefox-bin ?

also run `gdb /usr/lib/mozilla-firefox/firefox-bin`
then
`run -safe-mode`
cause the crash to happen, then
`bt`

you'll probably get the best results if you build firefox and freetype with -g
in the CFLAGS and FEATURES="splitdebug".  i know it takes a while to do that,
so maybe just the strace for now.

Turned out the following bug was relevant and fixed my problem:

http://bugs.gentoo.org/show_bug.cgi?id=187774

I never installed fonts manually, though. Don't know which font created the
problem. I just did a recursive chmod.

*** This bug has been marked as a duplicate of bug 187774 ***