28809 2003-09-15 11:09 0000 octave crashes with "segmentation fault" if compiled with CFLAGS option "-ffast-math" 2003-09-16 15:07:57 0000 1 1 1 Unclassified Gentoo Linux Applications unspecified x86 Linux RESOLVED FIXED P2 normal --- 1 jkkoski@iki.fi bug-wranglers@gentoo.org jkkoski@iki.fi 2003-09-15 11:09:15 0000 I had octave compiled with CFLAGS option "-ffast-math" in two gentoo boxes. I got "segmentation fault" when trying to start octave. I then compiled both leaving "-ffast-math" option out and octave is working now. box 1: CFLAGS="-Os -march=pentium2 -funroll-loops -pipe -fomit-frame-pointer -mmmx -msse -mfpmath=sse,387 -ffast-math" box 2: CFLAGS="-Os -march=athlon-xp -pipe -fomit-frame-pointer -ffast-math -mmmx -m3dnow -msse -mfpmath=sse,387" I tried both versions 2.1.40 and 2.1.49 of octave. Reproducible: Always Steps to Reproduce: 1. Put "-ffast-math" in your CFLAGS in /etc/make.conf 2. emerge octave 3. run octave Actual Results: segmentation fault Expected Results: octave should have started emerge info: Portage 2.0.49-r3 (default-x86-1.4, gcc-3.2.3, glibc-2.3.2-r1, 2.6.0-test5-mm1) ================================================================= System uname: 2.6.0-test5-mm1 i686 Mobile Intel(R) Celeron(R) CPU 2.00GHz distcc 2.9 i686-pc-linux-gnu (protocols 1 and 2) (default port 3632) [enabled] ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-Os -march=pentium2 -funroll-loops -pipe -fomit-frame-pointer -mmmx -msse -mfpmath=sse,387 -ffast-math" CHOST="i686-pc-linux-gnu" COMPILER="gcc3" CONFIG_PROTECT="/etc /var/qmail/control /usr/kde/2/share/config /usr/kde/3/share/config /usr/X11R6/lib/X11/xkb /usr/kde/3.1/share/config /usr/share/config" CONFIG_PROTECT_MASK="/etc/gconf /etc/env.d" CXXFLAGS="-Os -march=pentium2 -funroll-loops -pipe -fomit-frame-pointer -mmmx -msse -mfpmath=sse,387 -ffast-math" DISTDIR="/usr/portage/distfiles" FEATURES="sandbox ccache autoaddcvs distcc cchache" GENTOO_MIRRORS="http://gentoo.oregonstate.edu http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j5" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="x86 oss apm avi crypt cups encode foomaticdb gif jpeg libg++ mad mikmod mmx mpeg ncurses nls pdflib png quicktime spell truetype xml2 xmms xv zlib alsa gdbm berkdb slang readline arts tetex bonobo svga tcltk java guile X sdl gpm tcpd pam libwww ssl perl python esd imlib oggvorbis gnome gtk qt kde motif opengl mozilla gphoto2 cdr scanner acpi acpi4linux dga doc dvd evo gtk2 moznocomposer moznoirc moznomail plotutils radeon samba smooth tiff xml" seemant@gentoo.org 2003-09-16 15:07:57 0000 nice catch, fixed in cvs