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Bug 571108

Summary: =app-portage/eix-0.31.5 SIGSEGV when calling eix-diff
Product: Gentoo Linux Reporter: Oleg Hoefling <oleg.hoefling>
Component: Current packagesAssignee: Martin Väth <martin>
Status: VERIFIED FIXED    
Severity: normal CC: axs, hanno, proxy-maint, wolfgang.ztoeg, wsheets, xmw
Priority: Normal    
Version: unspecified   
Hardware: AMD64   
OS: Linux   
Whiteboard:
Package list:
Runtime testing required: ---
Attachments: output of gdb --args eix-diff
address sanitizer stack trace

Description Oleg Hoefling 2016-01-06 20:10:39 UTC
Recent call of "eix-sync" crashed.

Reproducible: Always

Steps to Reproduce:
1. Call "eix-diff"
Actual Results:  
Diffing databases (18952 -> 18953 packages)
[U]   == dev-python/numpy (1.10.2-r1@12/31/2015; (~)1.10.2-r1 -> (~)1.10.2-r2): Fast array and numerical python library
Received SIGSEGV - you probably found a bug in eix.
Please proceed with the following few instructions and help us find the bug:
 * install gdb (sys-devel/gdb)
 * reemerge eix with FEATURES="nostrip" USE="debug"
   or with FEATURES="nostrip" CXXFLAGS="-g -ggdb3" LDFLAGS=""
 * enter gdb with "gdb --args eix-diff your_arguments_for_eix-diff"
 * type "run" and wait for the segfault to happen
 * type "bt" to get a backtrace (this helps us a lot)
 * post a bugreport and be sure to include the output from gdb.

Sorry for the inconvenience and thanks in advance!


gdb log:

gdb --args eix-diff
GNU gdb (Gentoo 7.10.1 vanilla) 7.10.1
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://bugs.gentoo.org/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from eix-diff...done.
(gdb) run
Starting program: /usr/bin/eix-diff 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Diffing databases (18952 -> 18953 packages)
[U]   == dev-python/numpy (1.10.2-r1@12/31/2015; (~)1.10.2-r1 -> (~)1.10.2-r2): Fast array and numerical python library

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7896220 in std::string::compare(std::string const&) const () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6
(gdb) bt
#0  0x00007ffff7896220 in std::string::compare(std::string const&) const () from /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6
#1  0x000000000040fcc5 in std::operator< <char, std::char_traits<char>, std::allocator<char> > (__lhs="last",                                                                                
    __rhs=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/basic_string.h:2590                    
#2  0x000000000040e873 in std::less<std::string>::operator() (this=0x7e60e0, __x="last", __y=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>)                   
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_function.h:371                                                                                                         
#3  0x00000000004dc88d in std::_Rb_tree<std::string, std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> >, std::_Select1st<std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> > >, std::less<std::string>, std::allocator<std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> > > >::_M_lower_bound (this=0x7e60e0, __x=0x7e7de0, __y=0x7e60e8,                                                              
    __k=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_tree.h:1277                          
#4  0x00000000004d9a5e in std::_Rb_tree<std::string, std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> >, std::_Select1st<std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> > >, std::less<std::string>, std::allocator<std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> > > >::find (this=0x7e60e0, __k=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>)                  
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_tree.h:1926                                                                                                            
#5  0x00000000004d81c3 in std::map<std::string, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop>, std::less<std::string>, std::allocator<std::pair<std::string const, std::pair<void (PrintFormat::*)(OutputString*, Package*) const, Scanner::Prop> > > >::find (this=0x7e60e0,                                                                            
    __x=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_map.h:875                            
#6  0x00000000004d72ca in Scanner::get_plain (this=0x7e60b0, s=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>, p=0x7fffffffd21c)
    at output/formatstring-print.cc:547
#7  0x00000000004cf23e in PrintFormat::get_pkg_property (this=0x7eb330, s=0x7fffffffd470, package=0xe23df0, 
    name=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>) at output/formatstring-print.cc:567
#8  0x00000000004d418b in get_package_property (s=0x7fffffffd470, fmt=0x7eb330, entity=0xe23df0, name=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>)
    at output/formatstring-print.cc:1708
#9  0x00000000004c5e46 in PrintFormat::recPrint (this=0x7eb330, result=0x0, entity=0xe23df0, 
    get_property=0x4d415b <get_package_property(OutputString*, PrintFormat const*, void*, std::string const&)>, root=0x86d310) at output/formatstring.cc:409
#10 0x00000000004c7d6d in PrintFormat::print (this=0x7eb330, entity=0xe23df0, get_property=0x4d415b <get_package_property(OutputString*, PrintFormat const*, void*, std::string const&)>, 
    root=0x86d310, dbheader=0x95f4c0, vardbpkg=0x8abdf0, ps=0x870130, s=0x88c5e0, check_only=false) at output/formatstring.cc:831
#11 0x000000000051012e in PrintFormat::print (this=0x7eb330, entity=0xe23df0, get_property=0x4d415b <get_package_property(OutputString*, PrintFormat const*, void*, std::string const&)>, 
    root=0x86d310, dbheader=0x95f4c0, vardbpkg=0x8abdf0, ps=0x870130, s=0x88c5e0) at output/formatstring.h:460
#12 0x0000000000510187 in PrintFormat::print (this=0x7eb330, entity=0xe23df0, root=0x86d310, dbheader=0x95f4c0, vardbpkg=0x8abdf0, ps=0x870130, s=0x88c5e0) at output/formatstring.h:470
#13 0x000000000050e431 in print_found_package (p=0xe23df0) at eix-diff.cc:262
#14 0x0000000000510f9d in std::for_each<std::_List_iterator<Package*>, void (*)(Package*)> (__first=, __last=, __f=0x50e3ea <print_found_package(Package*)>)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_algo.h:3756
#15 0x00000000005103c0 in DiffTrees::diff (this=0x7fffffffd9d0, old_tree=0x7fffffffd9a0, new_tree=0x7fffffffd970) at eix-diff.cc:203
#16 0x000000000050f9c7 in run_eix_diff (argc=1, argv=0x7fffffffdc98) at eix-diff.cc:424
#17 0x0000000000539818 in run_program (argc=1, argv=0x7fffffffdc98) at ./main/main.cc:172
#18 0x0000000000539ae9 in main (argc=1, argv=0x7fffffffdc98) at ./main/main.cc:233
Comment 1 Wolfgang Goetz 2016-01-06 22:28:50 UTC
Created attachment 422168 [details]
output of gdb --args eix-diff
Comment 2 Wolfgang Goetz 2016-01-06 22:30:53 UTC
emerge --info
Portage 2.2.26 (python 2.7.10-final-0, default/linux/amd64/13.0/desktop/gnome/systemd, gcc-4.8.5, glibc-2.21-r1, 4.2.8-aufs x86_64)
=================================================================
System uname: Linux-4.2.8-aufs-x86_64-AMD_Athlon-tm-_II_X4_640_Processor-with-gentoo-2.2
KiB Mem:    12286236 total,   2380408 free
KiB Swap:     524284 total,    524260 free
Timestamp of repository gentoo: Wed, 06 Jan 2016 18:45:01 +0000
sh bash 4.3_p42-r1
ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1
ccache version 3.1.9 [enabled]
app-shells/bash:          4.3_p42-r1::gentoo
dev-java/java-config:     2.2.0::gentoo
dev-lang/perl:            5.20.2::gentoo
dev-lang/python:          2.7.10-r1::gentoo, 3.4.3-r1::gentoo
dev-util/ccache:          3.1.9-r4::gentoo
dev-util/cmake:           3.3.1-r1::gentoo
dev-util/pkgconfig:       0.28-r2::gentoo
sys-apps/baselayout:      2.2::gentoo
sys-apps/openrc:          0.18.4::gentoo
sys-apps/sandbox:         2.6-r1::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69::gentoo
sys-devel/automake:       1.11.6-r1::gentoo, 1.12.6::gentoo, 1.13.4::gentoo, 1.14.1::gentoo, 1.15::gentoo
sys-devel/binutils:       2.25.1-r1::gentoo
sys-devel/gcc:            4.8.5::gentoo, 4.9.3::gentoo
sys-devel/gcc-config:     1.7.3::gentoo
sys-devel/libtool:        2.4.6-r1::gentoo
sys-devel/make:           4.1-r1::gentoo
sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers)
sys-libs/glibc:           2.21-r1::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync9.de.gentoo.org/gentoo-portage
    priority: -1000

sabayon
    location: /var/lib/layman/sabayon
    masters: gentoo
    priority: 0

science
    location: /var/lib/layman/science
    masters: gentoo
    priority: 1

ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=native -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /var/lib/hsqldb"
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"
DISTDIR="/data_b/distfiles"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs ccache config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news nostrip parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j4"
PKGDIR="/usr/portage/packages"
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"
PORTAGE_TMPDIR="/var/tmp"
USE="X a52 aac acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdda cdr cli colord cracklib crypt cups cxx dbus debug dri dts dvd dvdr eds emboss encode evo exif fam firefox flac fortran gdbm gif glamor gnome gnome-keyring gnome-online-accounts gpm gstreamer gtk iconv introspection ipv6 jack jpeg lcms ldap libnotify libsecret mad mmx mmxext mng modules mp3 mp4 mpeg multilib nautilus ncurses nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt3support qt4 readline sdl seccomp session spell sse sse2 ssl startup-notification svg systemd tcpd tiff tracker truetype udev udisks unicode upower usb virt-network vorbis wxwidgets x264 xattr xcb xml xv xvid xvmc zlib" ABI_X86="64" 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" 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" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="3dnow 3dnowext mmx mmxext popcnt sse sse2 sse3 sse4a" 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 ublox ubx" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby21" USERLAND="GNU" VIDEO_CARDS="nvidia" 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, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Comment 3 Oleg Hoefling 2016-01-07 02:41:37 UTC
emerge --info
Portage 2.2.26 (python 3.4.3-final-0, default/linux/amd64/13.0/desktop/plasma, gcc-4.9.3, glibc-2.21-r1, 4.3.3-gentoo x86_64)
=================================================================
System uname: Linux-4.3.3-gentoo-x86_64-AMD_A10-5750M_APU_with_Radeon-tm-_HD_Graphics-with-gentoo-2.2
KiB Mem:    15608756 total,  14505140 free
KiB Swap:   17301500 total,  17301500 free
Timestamp of repository gentoo: Thu, 07 Jan 2016 02:30:01 +0000
sh bash 4.3_p42-r1
ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1
app-shells/bash:          4.3_p42-r1::gentoo
dev-lang/perl:            5.20.2::gentoo
dev-lang/python:          2.7.10-r1::gentoo, 3.4.3-r1::gentoo
dev-util/cmake:           3.3.1-r1::gentoo
dev-util/pkgconfig:       0.28-r2::gentoo
sys-apps/baselayout:      2.2::gentoo
sys-apps/openrc:          0.18.4::gentoo
sys-apps/sandbox:         2.6-r1::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69::gentoo
sys-devel/automake:       1.14.1::gentoo, 1.15::gentoo
sys-devel/binutils:       2.25.1-r1::gentoo
sys-devel/gcc:            4.9.3::gentoo
sys-devel/gcc-config:     1.7.3::gentoo
sys-devel/libtool:        2.4.6::gentoo
sys-devel/make:           4.1-r1::gentoo
sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers)
sys-libs/glibc:           2.21-r1::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000

hoefling-local
    location: /usr/local/portage
    masters: gentoo

gamerlay
    location: /var/lib/layman/gamerlay
    masters: gentoo                                                                                               
    priority: 50                                                                                                                                                                             
                                                                                                                                                                                             
ACCEPT_KEYWORDS="amd64"                                                                                                                                                                      
ACCEPT_LICENSE="* -@EULA"                                                                                                                                                                    
CBUILD="x86_64-pc-linux-gnu"                                                                                                                                                                 
CFLAGS="-O2 -pipe -march=bdver2 -mtune=bdver2 -mcx16 -msahf"                                                                                                                                 
CHOST="x86_64-pc-linux-gnu"                                                                                                                                                                  
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/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="-O2 -pipe -march=bdver2 -mtune=bdver2 -mcx16 -msahf"                                                                                                                               
DISTDIR="/usr/portage/distfiles"                                                                                                                                                             
FCFLAGS="-O2 -pipe"                                                                                                                                                                          
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="-O2 -pipe"
GENTOO_MIRRORS="ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo http://mirror.netcologne.de/gentoo/ rsync://mirror.netcologne.de/gentoo/ ftp://mirror.netcologne.de/gentoo/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ ftp://ftp.halifax.rwth-aachen.de/gentoo/ http://ftp.halifax.rwth-aachen.de/gentoo/ rsync://ftp.halifax.rwth-aachen.de/gentoo/ ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo ftp://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/ ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo http://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ rsync://ftp-stud.hs-esslingen.de/gentoo/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/"
LANG="en_US.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j5"
PKGDIR="/usr/portage/packages"
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"
PORTAGE_TMPDIR="/var/tmp"
USE="X a52 aac acl acpi alsa amd64 berkdb bluetooth branding bzip2 cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus declarative dri dts dvd dvdr egl emboss encode exif fam firefox flac fortran gdbm gif glamor gpm iconv icu ipv6 jpeg kipi lcms ldap libnotify lm_sensors mad mmx mmxext mng modules mp3 mp4 mpeg multilib ncurses networkmanager nls nptl ogg opengl openmp pam pango pcre pdf phonon plasma png policykit ppds pulseaudio qml qt3support qt5 readline sdl seccomp semantic-desktop session spell sqlite sse sse2 ssl startup-notification svg tcpd tiff truetype udev udisks unicode upower usb vorbis wayland widgets wxwidgets x264 xattr xcb xcomposite xinerama xml xscreensaver xv xvid zlib" ABI_X86="64" 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" 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" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx fma3 fma4 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 xop" 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 ublox ubx" INPUT_DEVICES="evdev synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-5" PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby20 ruby21" USERLAND="GNU" VIDEO_CARDS="radeonsi r600 radeon" 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, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, USE_PYTHON
Comment 4 Martin Väth 2016-01-07 14:47:34 UTC
Thanks for the report.
I cannot reproduce the error, but I fixed some memory issues - which might perhaps be the cause of the problem - in current eix git master (>=eix-0.31.6).
(You can get the live ebuild from the mv overlay).

In case it is not fixed for you, please copy portage.eix and previous.eix (from /var/cache/eix) to some backup location so that you are able to reproduce the error if necessary.
Comment 5 Hanno Böck gentoo-dev 2016-01-07 15:26:35 UTC
*** Bug 571166 has been marked as a duplicate of this bug. ***
Comment 6 Hanno Böck gentoo-dev 2016-01-07 15:28:04 UTC
Created attachment 422196 [details]
address sanitizer stack trace

In case this helps for the analysis, here's the debug output from address sanitizer. Seems like some invalid memory read in the diff string functionality.
Comment 7 Martin Väth 2016-01-07 15:48:50 UTC
(In reply to Hanno Boeck from comment #6)
> Seems like some invalid memory read in the diff string functionality

Probably not; the actual error must have been much earlier.
Did you get this trace with the current (live) version? (I hope that not - it should be fixed there).
Comment 8 Hanno Böck gentoo-dev 2016-01-07 15:53:17 UTC
>Did you get this trace with the current (live) version? (I hope that not - it 
>should be fixed there).

No, current ebuild/release. I'm currently travelling with bad mobile Internet, will test live version in a few days.
Comment 9 Wolfgang Goetz 2016-01-07 19:22:49 UTC
(In reply to Martin Väth from comment #4)
> Thanks for the report.
> I cannot reproduce the error, but I fixed some memory issues - which might
> perhaps be the cause of the problem - in current eix git master
> (>=eix-0.31.6).
> (You can get the live ebuild from the mv overlay).
> 

hello,
eix-diff OK! 


/etc/portage/package.accept_keywords:
# required by @world (argument)
=sys-devel/gettext-0.19.7 ~amd64
# required by =app-portage/eix-99999999 (argument)
=app-portage/eix-99999999 **



# eix-diff
Diffing databases (19716 -> 19779 packages)
[>]   == app-portage/eix (99999999[3]@07.01.2016; (~)0.31.5 -> (**)99999999*l[3]): Search and query ebuilds, portage incl. local settings, ext. overlays and more
...
[N]   >> www-plugins/xclear (~1.8-r2) [3]: Firefox plugin: button to clear URL
#
Comment 10 Norman Back 2016-01-08 09:05:27 UTC
Same for me:
gdb --args eix-diff
GNU gdb (Gentoo 7.10.1 vanilla) 7.10.1
Copyright (C) 2015 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-pc-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://bugs.gentoo.org/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from eix-diff...done.
(gdb) run
Starting program: /usr/bin/eix-diff 
Diffing databases (18926 -> 18928 packages)
[<]   == app-admin/glance (2015.1.1-r3 -> 11.0.0): Services for discovering, registering, and retrieving VM images
[>]   == media-libs/libsfml (2.3.2 -> 2.3.2-r1): Simple and Fast Multimedia Library (SFML)
[<]   == sys-auth/keystone (2015.1.1 -> 8.0.0): The Openstack authentication, authorization, and service catalog
[<]   == sys-cluster/cinder (2015.1.1 -> 7.0.0): Cinder is the OpenStack Block storage service, a spin out of nova-volumes
[<]   == sys-cluster/neutron (2015.1.1-r1 -> 7.0.0): A virtual network service for Openstack
[<]   == sys-cluster/nova (2015.1.1-r3 -> 12.0.0): Cloud computing fabric controller (main part of an IaaS system) in Python

Program received signal SIGSEGV, Segmentation fault.
0x00007ffff7b8ff1b in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) ()
   from /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6
(gdb) bt                                                                                                                                                                       
#0  0x00007ffff7b8ff1b in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) ()                                          
   from /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/libstdc++.so.6                                                                                                                  
#1  0x00000000004cd5d9 in std::pair<std::string const, OutputString>::pair<std::string const&, 0ul>(std::tuple<std::string const&>&, std::tuple<>&, std::_Index_tuple<0ul>, std::_Index_tuple<>) (this=0x8293010, __tuple1=std::tuple containing = {...}, __tuple2=empty std::tuple) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/tuple:1104      
#2  0x00000000004cd3d2 in std::pair<std::string const, OutputString>::pair<std::string const&>(std::piecewise_construct_t, std::tuple<std::string const&>, std::tuple<>) (     
    this=0x8293010, __first=std::tuple containing = {...}, __second=empty std::tuple) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/tuple:1093                      
#3  0x00000000004cd151 in __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<std::string const, OutputString> > >::construct<std::pair<std::string const, OutputString><std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> > > (this=0x7e6410, __p=0x8293010)                                                                 
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/ext/new_allocator.h:120                                                                                           
#4  0x00000000004cca2a in std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<std::string const, OutputString> > > >::_S_construct<std::pair<std::string const, OutputString><std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> > >(std::allocator<std::_Rb_tree_node<std::pair<std::string const, OutputString> > >&, std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<std::string const, OutputString> > > >::__construct_helper*, (std::pair<std::string const, OutputString><std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> >&&)...) (__a=..., __p=0x8293010)                                                             
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/alloc_traits.h:253                                                                                           
#5  0x00000000004cc199 in std::allocator_traits<std::allocator<std::_Rb_tree_node<std::pair<std::string const, OutputString> > > >::construct<std::pair<std::string const, OutputString><std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> > >(std::allocator<std::_Rb_tree_node<std::pair<std::string const, OutputString> > >&, std::pair<std::string const, OutputString><std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> >*, (std::pair<std::string const, OutputString><std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> >&&)...) (__a=..., __p=0x8293010)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/alloc_traits.h:399
#6  0x00000000004cad9c in std::_Rb_tree<std::string, std::pair<std::string const, OutputString>, std::_Select1st<std::pair<std::string const, OutputString> >, std::less<std::string>, std::allocator<std::pair<std::string const, OutputString> > >::_M_create_node<std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> >(std::piecewise_construct_t const&, std::tuple<std::string const&>&&, std::tuple<>&&) (this=0x7e6410) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_tree.h:421
#7  0x00000000004c988d in std::_Rb_tree<std::string, std::pair<std::string const, OutputString>, std::_Select1st<std::pair<std::string const, OutputString> >, std::less<std::string>, std::allocator<std::pair<std::string const, OutputString> > >::_M_emplace_hint_unique<std::piecewise_construct_t const&, std::tuple<std::string const&>, std::tuple<> >(std::_Rb_tree_const_iterator<std::pair<std::string const, OutputString> >, std::piecewise_construct_t const&, std::tuple<std::string const&>&&, std::tuple<>&&) (
    this=0x7e6410, __pos=...) at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_tree.h:1790
#8  0x00000000004c8ce7 in std::map<std::string, OutputString, std::less<std::string>, std::allocator<std::pair<std::string const, OutputString> > >::operator[] (
    this=0x7e6410, __k=<error reading variable: Cannot access memory at address 0xffffffffffffffe8>)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_map.h:500
#9  0x00000000004c5c00 in PrintFormat::recPrint (this=0x7e6410, result=0x0, entity=0x318fea0, get_property=
    0x4d3f5b <get_package_property(OutputString*, PrintFormat const*, void*, std::string const&)>, root=0x869680) at output/formatstring.cc:406
#10 0x00000000004c7b6d in PrintFormat::print (this=0x7e6410, entity=0x318fea0, 
    get_property=0x4d3f5b <get_package_property(OutputString*, PrintFormat const*, void*, std::string const&)>, root=0x869680, dbheader=0x8cd620, vardbpkg=0x8d4fd0, 
    ps=0x86b820, s=0x874950, check_only=false) at output/formatstring.cc:831
#11 0x000000000050ff2e in PrintFormat::print (this=0x7e6410, entity=0x318fea0, 
    get_property=0x4d3f5b <get_package_property(OutputString*, PrintFormat const*, void*, std::string const&)>, root=0x869680, dbheader=0x8cd620, vardbpkg=0x8d4fd0, 
    ps=0x86b820, s=0x874950) at output/formatstring.h:460
#12 0x000000000050ff87 in PrintFormat::print (this=0x7e6410, entity=0x318fea0, root=0x869680, dbheader=0x8cd620, vardbpkg=0x8d4fd0, ps=0x86b820, s=0x874950)
    at output/formatstring.h:470
#13 0x000000000050e231 in print_found_package (p=0x318fea0) at eix-diff.cc:262
#14 0x0000000000510d9d in std::for_each<std::_List_iterator<Package*>, void (*)(Package*)> (__first=, __last=, __f=0x50e1ea <print_found_package(Package*)>)
    at /usr/lib/gcc/x86_64-pc-linux-gnu/4.9.3/include/g++-v4/bits/stl_algo.h:3756
#15 0x00000000005101c0 in DiffTrees::diff (this=0x7fffffffd940, old_tree=0x7fffffffd910, new_tree=0x7fffffffd8e0) at eix-diff.cc:203
#16 0x000000000050f7c7 in run_eix_diff (argc=1, argv=0x7fffffffdc08) at eix-diff.cc:424
#17 0x00000000005364e6 in run_program (argc=1, argv=0x7fffffffdc08) at ./main/main.cc:172
#18 0x00000000005367b7 in main (argc=1, argv=0x7fffffffdc08) at ./main/main.cc:233
(gdb)
Comment 11 Norman Back 2016-01-08 09:08:49 UTC
emerge --info app-portage/eix
Portage 2.2.26 (python 2.7.10-final-0, default/linux/amd64/13.0/desktop/plasma/systemd, gcc-4.9.3, glibc-2.21-r1, 4.3.3-gentoo-64-sd x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-4.3.3-gentoo-64-sd-x86_64-AMD_FX-tm-9590_Eight-Core_Processor-with-gentoo-2.2
KiB Mem:    32858924 total,  24360256 free
KiB Swap:   46137328 total,  46137328 free
Timestamp of repository gentoo: Fri, 08 Jan 2016 02:45:01 +0000
sh bash 4.3_p42-r1
ld GNU ld (Gentoo 2.25.1 p1.1) 2.25.1
distcc 3.2rc1 x86_64-pc-linux-gnu [disabled]
ccache version 3.1.9 [disabled]
app-shells/bash:          4.3_p42-r1::gentoo
dev-java/java-config:     2.2.0::gentoo
dev-lang/perl:            5.20.2::gentoo
dev-lang/python:          2.7.10-r1::gentoo, 3.4.3-r1::gentoo
dev-util/ccache:          3.1.9-r4::gentoo
dev-util/cmake:           3.3.1-r1::gentoo
dev-util/pkgconfig:       0.28-r2::gentoo
sys-apps/baselayout:      2.2::gentoo
sys-apps/openrc:          0.18.4::gentoo
sys-apps/sandbox:         2.6-r1::gentoo
sys-devel/autoconf:       2.13::gentoo, 2.69::gentoo
sys-devel/automake:       1.11.6-r1::gentoo, 1.12.6::gentoo, 1.14.1::gentoo, 1.15::gentoo
sys-devel/binutils:       2.25.1-r1::gentoo
sys-devel/gcc:            4.8.5::gentoo, 4.9.3::gentoo
sys-devel/gcc-config:     1.7.3::gentoo
sys-devel/libtool:        2.4.6::gentoo
sys-devel/make:           4.1-r1::gentoo
sys-kernel/linux-headers: 3.18::gentoo (virtual/os-headers)
sys-libs/glibc:           2.21-r1::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://datastoreone/gentoo-portage
    priority: -1000

local
    location: /usr/local/portage
    masters: gentoo
    priority: 0

jkolo
    location: /var/lib/layman/jkolo
    masters: gentoo
    priority: 1

calculate
    location: /var/lib/layman/calculate
    masters: gentoo
    priority: 2

ikelos
    location: /var/lib/layman/ikelos
    masters: gentoo
    priority: 3

Installed sets: @kernels
ACCEPT_KEYWORDS="amd64"
ACCEPT_LICENSE="*"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=amdfam10 -mtune=amdfam10 -O2 -pipe"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/themes/oxygen-gtk/gtk-2.0"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php5.6/ext-active/ /etc/php/cgi-php5.6/ext-active/ /etc/php/cli-php5.6/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=amdfam10 -mtune=amdfam10 -O2 -pipe"
DISTDIR="/mnt/portage.autofs/distfiles"
EMERGE_DEFAULT_OPTS="--with-bdeps=y -j17 --load-average=20 --quiet-build=y"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch parallel-install preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://mirror.qubenet.net/mirror/gentoo/ http://mirrors.linuxant.fr/distfiles.gentoo.org/ ftp://mirror.qubenet.net/mirror/gentoo/ http://www.mirrorservice.org/sites/www.ibiblio.org/gentoo/ http://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://ftp.free.fr/mirrors/ftp.gentoo.org/ http://mirror.leaseweb.com/gentoo/ http://gentoo.modulix.net/gentoo/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ ftp://mirror.bytemark.co.uk/gentoo/"
LANG="en_GB.UTF-8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
MAKEOPTS="-j20 --load-average=16"
PKGDIR="/mnt/portage.autofs/packages"
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=lost+found/"
PORTAGE_TMPDIR="/var/tmp"
USE="X a52 aac accessibility acl acpi aes alsa amarok amd64 amr authdaemond avx bash-completion berkdb bluetooth bluray branding bzip2 cairo caps cdda cdr cli cracklib crypt cups cxx dbus declarative dri dts dv dvd dvdr dvdread emboss encode exif fam firefox flac fma3 fma4 fortran gdbm gif glamor gpm gtk iconv ieee1394 ipv6 jpeg kde kipi lcms ldap libnotify lm_sensors lock mad mmx mmxext mng modules mp3 mp4 mpeg multilib mysql ncurses network nls nptl ofx ogg opengl openmp oss pam pango pcre pdf phonon plasma png policykit popcnt ppds pulseaudio qml qt3 qt3support qt4 qt5 readline samba sasl sdl seccomp semantic-desktop session spell sse sse2 sse3 sse4_1 sse4_2 sse4a ssl ssse3 startup-notification svg systemd tcpd thunar tiff truetype udev udisks uk_bleb uk_rt unicode upower usb v4l v4l2 vdpau vorbis widgets wxwidgets x264 xattr xcb xcomposite xine xinerama xml xop xscreensaver xv xvid xvmc zlib" ABI_X86="64" 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" APACHE2_MODULES="actions alias auth_basic auth_digest authn_anon authn_dbd authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock dbd deflate dir disk_cache env expires ext_filter file_cache filter headers ident imagemap include info log_config logio mem_cache mime mime_magic negotiation proxy proxy_ajp proxy_balancer proxy_connect proxy_http rewrite setenvif so speling status unique_id userdir usertrack vhost_alias cgi cgid" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" CAMERAS="ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx fma3 fma4 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 xop" DRACUT_MODULES="lvm syslog" DVB_CARDS="usb-dib0700" 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 ublox ubx" GRUB_PLATFORMS="efi-32 efi-64 pc multiboot mount" INPUT_DEVICES="evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LINGUAS="en en_GB" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" PYTHON_SINGLE_TARGET="python2_7" PYTHON_TARGETS="python2_7 python3_4" QEMU_SOFTMMU_TARGETS="i386 x86_64" QEMU_USER_TARGETS="i386 x86_64" RUBY_TARGETS="ruby20 ruby21" SANE_BACKENDS="hp5590 hp net abaton agfafocus apple artec artec_eplus48u as6e avision bh canon canon630u canon_dr canon_pp cardscan coolscan coolscan2 coolscan3 dc210 dc240 dc25 dell1600n_net dmc epjitsu epson epson2 fujitsu genesys gt68xx hp3500 hp3900 hp4200 hp5400 hpljm1005 hpsj5s hs2p ibm kodak kvs1025 kvs20xx leo lexmark ma1509 magicolor matsushita microtek microtek2 mustek mustek_pp mustek_usb nec niash p5 pie pixma plustek plustek_pp pnm qcam ricoh rts8891 s9036 sceptre sharp sm3600 sm3840 snapscan sp15c st400 stv680 tamarack teco1 teco2 teco3 test u12 umax umax1220u umax_pp xerox_mfp" USERLAND="GNU" VIDEO_CARDS="nvidia" 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"
USE_PYTHON="2.7"
Unset:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

=================================================================
                        Package Settings
=================================================================

app-portage/eix-0.31.5::gentoo was built with the following:
USE="debug dep nls -doc -optimization -security -sqlite -strong-optimization -strong-security -swap-remote -tools" ABI_X86="64" LINGUAS="-de -ru"
Comment 12 Norman Back 2016-01-08 09:24:55 UTC
Looks like it's fixed in overlay

emerge -1av app-portage/eix-99999999::mv

eix-diff
Diffing databases (18926 -> 18928 packages)
[<]   == app-admin/glance (2015.1.1-r3 -> 11.0.0): Services for discovering, registering, and retrieving VM images
[>]   == media-libs/libsfml (2.3.2 -> 2.3.2-r1): Simple and Fast Multimedia Library (SFML)
[<]   == sys-auth/keystone (2015.1.1 -> 8.0.0): The Openstack authentication, authorization, and service catalog
[<]   == sys-cluster/cinder (2015.1.1 -> 7.0.0): Cinder is the OpenStack Block storage service, a spin out of nova-volumes
[<]   == sys-cluster/neutron (2015.1.1-r1 -> 7.0.0): A virtual network service for Openstack
[<]   == sys-cluster/nova (2015.1.1-r3 -> 12.0.0): Cloud computing fabric controller (main part of an IaaS system) in Python
[N]   >> dev-python/flexx (~0.2): Pure Python toolkit for creating GUI's using web technology
[N]   >> net-misc/kea (~1.0.0): High-performance production grade DHCPv4 & DHCPv6 server