After a recent recompiling of my system with new cflags, firefox and thunderbird would fail to open. They wouldn't output any error data to console. To fix this, I removed -funroll-loops from my cflags, and they both work as expected now. What exactly happened: Tried to run firefox/thunderbird, window would show up briefly and then exit. CFLAGS="-O3 -march=athlon-xp -mcpu=athlon-xp -ftracer -fprefetch-loop-arrays -freduce-all-givs -fmove-all-movables -fforce-addr -funroll-loops -pipe -mmmx -msse -mfpmath=sse -fomit-frame-pointer" Those are the exact CFLAGS used that produced this error (CXXFLAGS are the same). Reproducible: Always Steps to Reproduce: 1. CFLAGS="-O3 -march=athlon-xp -mcpu=athlon-xp -ftracer -fprefetch-loop-arrays -freduce-all-givs -fmove-all-movables -fforce-addr -funroll-loops -pipe -mmmx -msse -mfpmath=sse -fomit-frame-pointer" emerge mozilla-firefox 2. Run firefox Note that thunderbird may be substituted and same results will be achieved. Actual Results: Window was created but crashed momentarily after; no output to the console from firefox/thunderbird. emerge --info: Gentoo Base System version 1.4.3.13p1 Portage 2.0.50-r1 (default-x86-2004.0, gcc-3.3.3, glibc-2.3.3_pre20040207-r0, 2.6.5-rc3-love1) ================================================================= System uname: 2.6.5-rc3-love1 i686 AMD Athlon(tm) XP 2500+ Autoconf: sys-devel/autoconf-2.59-r3 Automake: sys-devel/automake-1.8.3 ACCEPT_KEYWORDS="x86 ~x86" AUTOCLEAN="yes" CFLAGS="-O3 -march=athlon-xp -mcpu=athlon-xp -ftracer -fprefetch-loop-arrays -freduce-all-givs -fmove-all-movables -fforce-addr -funroll-loops -pipe -mmmx -msse -mfpmath=sse -fomit-frame-pointer" CHOST="i686-pc-linux-gnu" COMPILER="gcc3" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.2/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="-O3 -march=athlon-xp -mcpu=athlon-xp -ftracer -fprefetch-loop-arrays -freduce-all-givs -fmove-all-movables -fforce-addr -funroll-loops -pipe -mmmx -msse -mfpmath=sse -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache sandbox" GENTOO_MIRRORS="http://gentoo.oregonstate.edu http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X acpi aim alsa apm arts avi berkdb cdr crypt cups directfb dvd encode esd fbcon foomaticdb gdbm gif gpm gtk gtk2 imlib java jpeg libg++ libwww mad mikmod mmx motif mpeg ncurses nls oggvorbis opengl oscar oss pam pdflib perl png python quicktime readline sdl slang spell sse ssl svga tcpd tiff truetype usb x86 xinerama xml2 xmms xv zlib"
I don't know what changed on your system between builds. -funroll-loops is already stripped from the mozilla builds and has been for a long time. I think it must have just been building it twice that solved the problem for some unknown reason... :-(
