During emerge libvorbis (1.1.0 version selected as newest by portage) compilation fails due to compiler error (FPE) when compiling mdct.c and smallft.c I use i586-linux-gnu-3.4.2 with following flags and uses: CFLAGS="-O3 -march=pentium3 -mmmx -msse -fomit-frame-pointer -pipe -fforce-addr -fforce-mem -ffast-math -mfpmath=sse,387 -fprefetch-loop-arrays -fmove-all-movables -freduce-all-givs -momit-leaf-frame-pointer -ftracer -fno-crossjumping -maccumulate-outgoing-args" USE="-nls mmx sse -directfb -ggi -postgres -kde dvd avi encode ncurses samba usb zlib xvid pnp network crypt imap" Reproducible: Always Steps to Reproduce: 1. Put the following into /etc/make.conf, CFLAGS="-O3 -march=pentium3 -mmmx -msse -fomit-frame-pointer -pipe -fforce-addr -fforce-mem -ffast-math -mfpmath=sse,387 -fprefetch-loop-arrays -fmove-all-movables -freduce-all-givs -momit-leaf-frame-pointer -ftracer -fno-crossjumping -maccumulate-outgoing-args" USE="-nls mmx sse -directfb -ggi -postgres -kde dvd avi encode ncurses samba usb zlib xvid pnp network crypt imap" 2. emerge -e libvorbis (You need -e to recompile the gcc etc. using new flags IMHO) Actual Results: gcc -DHAVE_CONFIG_H -I. -I. -I.. -I../include -O20 -ffast-math -D_REENTRANT -fsigned-char -O3 -mmmx -msse -fomit-frame-pointer -pipe -fforce-addr -fforce-mem -ffast-math -mfpmath=sse,387 -fprefetch-loop-arrays -fmove-all-movables -freduce-all-givs -momit-leaf-frame-pointer -ftracer -fno-crossjumping -maccumulate-outgoing-args -mno-sse2 -fPIC -DUSE_MEMORY_H -MT smallft.lo -MD -MP -MF .deps/smallft.Tpo -c smallft.c -fPIC -DPIC -o .libs/smallft.o smallft.c: In function `dradf2': smallft.c:167: internal compiler error: Floating point exception Please submit a full bug report, with preprocessed source if appropriate. See <URL:http://bugs.gentoo.org/> for instructions. Expected Results: Go to next file in sequence. Portage 2.0.51-r3 (default-x86-2004.2, gcc-3.4.2, glibc-2.3.4.20040808-r1, 2.6.9-gentoo-r3 i686) ================================================================= System uname: 2.6.9-gentoo-r3 i686 Pentium III (Coppermine) Gentoo Base System version 1.4.16 Autoconf: sys-devel/autoconf-2.59-r5 Automake: sys-devel/automake-1.8.5-r1 Binutils: sys-devel/binutils-2.14.90.0.8-r1 Headers: sys-kernel/linux-headers-2.4.21-r1 Libtools: sys-devel/libtool-1.5.2-r5 ACCEPT_KEYWORDS="x86" AUTOCLEAN="yes" CFLAGS="-O3 -march=pentium3 -mmmx -msse -fomit-frame-pointer -pipe -fforce-addr -fforce-mem -ffast-math -mfpmath=sse,387 -fprefetch-loop-arrays -fmove-all-movables -freduce-all-givs -momit-leaf-frame-pointer -ftracer -fno-crossjumping -maccumulate-outgoing-args" CHOST="i686-pc-linux-gnu" COMPILER="" CONFIG_PROTECT="/etc /usr/X11R6/lib/X11/xkb /usr/kde/2/share/config /usr/kde/3.3/env /usr/kde/3.3/share/config /usr/kde/3.3/shutdown /usr/kde/3/share/config /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/bind /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-O3 -march=pentium3 -mmmx -msse -fomit-frame-pointer -pipe -fforce-addr -fforce-mem -ffast-math -mfpmath=sse,387 -fprefetch-loop-arrays -fmove-all-movables -freduce-all-givs -momit-leaf-frame-pointer -ftracer -fno-crossjumping -maccumulate-outgoing-args" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs ccache distlocks sandbox" GENTOO_MIRRORS="ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo http://ftp-mirror.internap.com/pub/gentoo/ http://mirrors.acm.cs.rpi.edu/gentoo/" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="X alsa apm arts avi berkdb bitmap-fonts bonobo crypt cups dvd encode esd f77 foomaticdb fortran gdbm gif gnome gpm gtk gtk2 gtkhtml guile imap imlib java jpeg libg++ libwww mad mikmod mmx motif mpeg ncurses network oggvorbis opengl oss pam pdflib perl png pnp python qt quicktime readline samba scanner sdl slang spell sse ssl svga tcltk tcpd tetex truetype usb x86 xml2 xmms xv xvid zlib"
Created attachment 43933 [details] Preprocessed source file
Try it with a reduced set of compiler flags. We can and do not test/strip all possible stupid flags one can apply.
