Title says it all. I had to switch back to gcc-6.3.0 in order to continue the update.
$ emerge --info Portage 2.3.6 (python 3.6.1-final-0, hardened/linux/musl/amd64, gcc-7.1.0, musl-1.1.16, 4.9.24-hardened x86_64) ================================================================= System uname: Linux-4.9.24-hardened-x86_64-Intel-R-_Core-TM-_i5-4210U_CPU_@_1.70GHz-with-gentoo-2.3 KiB Mem: 5994428 total, 599676 free KiB Swap: 12582908 total, 12582908 free Timestamp of repository gentoo: Thu, 08 Jun 2017 15:54:10 +0000 sh bash 4.4_p12 ld GNU ld (Gentoo 2.28 p1.2) 2.28 app-shells/bash: 4.4_p12::gentoo dev-java/java-config: 2.2.0-r3::gentoo dev-lang/perl: 5.24.1-r2::gentoo dev-lang/python: 2.7.13::gentoo, 3.6.1-r1::gentoo dev-util/cmake: 3.8.2::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.3::gentoo sys-apps/openrc: 0.26.3::gentoo sys-apps/sandbox: 2.10-r4::musl sys-devel/autoconf: 2.13::gentoo, 2.69-r3::gentoo sys-devel/automake: 1.13.4-r1::gentoo, 1.15-r2::gentoo sys-devel/binutils: 2.28-r2::gentoo sys-devel/gcc: 6.3.0::musl, 7.1.0-r1::musl sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/libtool: 2.4.6-r4::gentoo sys-devel/make: 4.2.1-r1::gentoo sys-kernel/linux-headers: 4.10::musl (virtual/os-headers) sys-libs/musl: 1.1.16::musl-extras Repositories: gentoo location: /usr/portage sync-type: git sync-uri: https://github.com/gentoo/gentoo.git priority: -1000 libressl location: /var/lib/layman/libressl masters: gentoo priority: 50 musl location: /var/lib/layman/musl masters: gentoo priority: 50 musl-extras location: /var/lib/layman/musl-extras masters: gentoo musl priority: 50 local location: /usr/local/portage masters: gentoo libressl musl priority: 100 ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-gentoo-linux-musl" CFLAGS="-march=native -O2 -pipe -floop-nest-optimize" CHOST="x86_64-gentoo-linux-musl" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/lib/i2pd/certificates" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /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=native -O2 -pipe -floop-nest-optimize" DISTDIR="/var/cache/distfiles" FCFLAGS="-march=native -O2 -pipe -floop-nest-optimize" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=native -O2 -pipe -floop-nest-optimize" GENTOO_MIRRORS="https://mirrors.kernel.org/gentoo/" INSTALL_MASK="charset.alias" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_COMPRESS="bzip2" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X alsa amd64 berkdb cli cracklib crypt custom-cflags cxx dbus dri fortran hardened iconv icu ipv6 jpeg libressl modules ncurses nls nptl opengl openmp openssl pax_kernel pcre pic png readline seccomp session ssl tcpd threads tiff unicode xattr zlib zsh-completion" ABI_X86="64" 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" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3 f16c" CURL_SSL="libressl" ELIBC="musl" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput" KERNEL="linux" L10N="en en_US" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en en_US" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_6" QEMU_SOFTMMU_TARGETS="i386 x86_64" RUBY_TARGETS="ruby24" SANE_BACKENDS="hp" USERLAND="GNU" VIDEO_CARDS="intel i965" 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: CC, CPPFLAGS, CTARGET, CXX, EMERGE_DEFAULT_OPTS, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Created attachment 475708 [details, diff] fix luatex alignment with gcc7
There's a patch and an explanation available on http://www.tug.org/pipermail/tex-live/2017-June/040192.html. Applying the patch makes luatex no longer segfaulting.
applied in texlive-core-2017-r1, thanks
*** Bug 621320 has been marked as a duplicate of this bug. ***
