Created attachment 359654 [details] gcc4.7_summary.log there are 29 files with LDFLAGS problem and 24 with "severe warnings which indicate that it may exhibit random runtime failures" emerge --info Portage 2.2.1 (hardened/linux/amd64, gcc-4.7.3, glibc-2.15-r3, 3.8.6-pentoo x86_64) ================================================================= System uname: Linux-3.8.6-pentoo-x86_64-Intel-R-_Core-TM-_i5-3320M_CPU_@_2.60GHz-with-gentoo-2.2 KiB Mem: 7984532 total, 3803520 free KiB Swap: 4194300 total, 4194300 free Timestamp of tree: Fri, 27 Sep 2013 22:45:01 +0000 ld GNU ld (GNU Binutils) 2.23.1 app-shells/bash: 4.2_p45 dev-java/java-config: 2.1.12-r1 dev-lang/python: 2.7.5-r2, 3.2.5-r2 dev-util/cmake: 2.8.10.2-r2 dev-util/pkgconfig: 0.28 sys-apps/baselayout: 2.2 sys-apps/openrc: 0.11.8::pentoo sys-apps/sandbox: 2.6-r1 sys-devel/autoconf: 2.13, 2.69 sys-devel/automake: 1.4_p6-r1, 1.9.6-r3, 1.11.6, 1.12.6, 1.13.4 sys-devel/binutils: 2.23.1 sys-devel/gcc: 4.6.3, 4.7.3-r1 sys-devel/gcc-config: 1.7.3 sys-devel/libtool: 2.4.2 sys-devel/make: 3.82-r4 sys-kernel/linux-headers: 3.9 (virtual/os-headers) sys-libs/glibc: 2.15-r3 Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync6.tw.gentoo.org/gentoo-portage/ priority: -1000 pentoo location: /var/lib/layman/pentoo masters: gentoo priority: 0 steam-overlay location: /var/lib/layman/steam masters: gentoo priority: 1 local-overlay location: /usr/local/portage masters: gentoo priority: 2 ABI="amd64" ABI_X86="32 64" ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA PUEL AdobeFlash-11.x Google-TOS dlj-1.1 google-chrome Oracle-BCLA-JavaSE Intel-SDP skype-4.0.0.7-copyright" ACCEPT_PROPERTIES="*" ACCEPT_RESTRICT="*" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ANDROID_SWT="/usr/share/swt-3.7/lib" ANT_HOME="/usr/share/ant" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd 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" ARCH="amd64" AUTOCLEAN="yes" BOOTSTRAP_USE="cxx unicode python_targets_python3_2 python_targets_python2_7 multilib hardened pax_kernel pic -jit -orc" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -mtune=generic -O2 -pipe" CFLAGS_amd64="-m64" CFLAGS_x32="-mx32" CFLAGS_x86="-m32" CHOST="x86_64-pc-linux-gnu" CHOST_amd64="x86_64-pc-linux-gnu" CHOST_x32="x86_64-pc-linux-gnux32" CHOST_x86="i686-pc-linux-gnu" CLEAN_DELAY="5" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" COLLISION_IGNORE="/lib/modules/* *.py[co] *$py.class */dropin.cache" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.5/ext-active/ /etc/php/cgi-php5.5/ext-active/ /etc/php/cli-php5.5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CXXFLAGS="-march=core2 -mtune=generic -O2 -pipe" DEFAULT_ABI="amd64" DISPLAY=":0" DISTDIR="/usr/portage/distfiles" EDITOR="/usr/bin/mcedit" ELIBC="glibc"
FYI, the LTO use flag may be the reason for that
The array subscript warnings were reported upstream but were pretty much ignored. LDFLAGS is bug #337788. *** This bug has been marked as a duplicate of bug 337788 ***
