sys-devel/gcc-4.6.2 is working fine for me on my mips multilib machine. I've built python-3.2.2, vim-7.3.462 and several other packages without problems. Before upgrading to gcc 4.6.2 I was running gcc-4.6.1-r1 for several months, building hundreds of packages without trouble. sys-devel/gcc-4.6.2 deserves a ~mips keyword. Reproducible: Always flummox ~ # emerge --info Portage 2.1.10.49 (default/linux/mips/10.0/multilib/n32, gcc-4.6.2, glibc-2.13-r4, 3.2.9 mips64) ================================================================= System uname: Linux-3.2.9-mips64-R5000_V2.1_FPU_V1.0-with-gentoo-2.1 Timestamp of tree: Wed, 07 Mar 2012 14:15:01 +0000 app-shells/bash: 4.2_p20 dev-lang/python: 2.7.2-r3, 3.2.2 dev-util/pkgconfig: 0.26 sys-apps/baselayout: 2.1 sys-apps/openrc: 0.9.9.2 sys-apps/sandbox: 2.5 sys-devel/autoconf: 2.68 sys-devel/automake: 1.11.3 sys-devel/binutils: 2.22-r1 sys-devel/gcc: 4.6.2 sys-devel/gcc-config: 1.5.1 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r3 sys-kernel/linux-headers: 3.2-r1 (virtual/os-headers) sys-libs/glibc: 2.13-r4 Repositories: gentoo ACCEPT_KEYWORDS="mips ~mips" ACCEPT_LICENSE="* -@EULA" CBUILD="mips64-unknown-linux-gnu" CFLAGS="-Os -march=r5000 -fomit-frame-pointer" CHOST="mips64-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-Os -march=r5000 -fomit-frame-pointer" DISTDIR="/usr/portage/distfiles" FEATURES="assume-digests binpkg-logs distlocks ebuild-locks fixlafiles news parallel-fetch protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch" FFLAGS="-Os -march=r5000 -fomit-frame-pointer" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="" SYNC="rsync://jove.eng.yale.edu/gentoo-portage" USE="berkdb bzip2 cli cracklib crypt cups cxx device-mapper gdbm gpm iconv ipv6 memlimit mips modules mudflap multilib ncurses nls nptl nptlonly offensive pam pcre pppd readline session ssl sysfs tcpd unicode xorg zlib" ALSA_CARDS="au1x00" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan stage tables krita karbon braindump" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf superstar2 timing tsip tripmate tnt ubx" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" PHP_TARGETS="php5-3" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="fbdev impact newport dummy v4l" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, LC_ALL, LINGUAS, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS flummox ~ #
Keywords will be restored in due time. *** This bug has been marked as a duplicate of bug 346809 ***
For reference, I've been running 4.6.2 on my mips systems as well. 4.6 actually fixes bug 378375 (internal compiler error when building n64/little endian). We're just waiting for some stupid problem totally unrelated to us to be fixed before toolchain@ unmasks gcc-4.6.
