Created attachment 494478 [details] compiler-rt-sanitizers-5.0.0:20170914-072305.log.gz [130/162] cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-sanitizers-5.0.0_build/lib/asan/ tests && /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-sanitizers-5.0.0_build/lib/llvm/5/bi n/clang -O2 -pipe -march=sandybridge -ftree-vectorize -Wall -std=c++11 -Wno-unused-parameter -Wno-unknown-warning-option -DGTEST_NO_ LLVM_RAW_OSTREAM=1 -DGTEST_HAS_RTTI=0 -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/llvm/utils/unitte st/googletest/include -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/llvm/utils/unittest/googletest -I /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/include -I/var/tmp/portage_ondisk/p ortage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-s anitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/asan -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/com piler-rt-5.0.0.src/lib/sanitizer_common/tests -fno-rtti -O2 -Wno-format -Werror=sign-compare -Wno-non-virtual-dtor -Wno-variadic-mac ros -gline-tables-only -DASAN_HAS_BLACKLIST=1 -DASAN_HAS_EXCEPTIONS=1 -DASAN_UAR=0 -m64 -c -o ASAN_NOINST_TEST_OBJECTS.gtest-all.cc. x86_64-inline.o /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/llvm/utils/unittest/googletest/src/gtest- all.cc [131/162] cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-sanitizers-5.0.0_build/lib/asan/ tests && /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-sanitizers-5.0.0_build/lib/llvm/5/bi n/clang -O2 -pipe -march=sandybridge -ftree-vectorize -Wall -std=c++11 -Wno-unused-parameter -Wno-unknown-warning-option -DGTEST_NO_ LLVM_RAW_OSTREAM=1 -DGTEST_HAS_RTTI=0 -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/llvm/utils/unitte st/googletest/include -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/llvm/utils/unittest/googletest -I /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/include -I/var/tmp/portage_ondisk/p ortage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-s anitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/asan -I/var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/com piler-rt-5.0.0.src/lib/sanitizer_common/tests -fno-rtti -O2 -Wno-format -Werror=sign-compare -Wno-non-virtual-dtor -Wno-variadic-mac ros -gline-tables-only -DASAN_HAS_BLACKLIST=1 -DASAN_HAS_EXCEPTIONS=1 -DASAN_UAR=0 -fsanitize=address -fsanitize-blacklist=/var/tmp/ portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/asan/tests/asan_test.ignore -mllvm -asan -instrument-assembly -m32 -c -o ASAN_INST_TEST_OBJECTS.asan_test.cc.i386-inline.o /var/tmp/portage_ondisk/portage/sys-libs/compiler- rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/asan/tests/asan_test.cc [132/162] cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go && env "CC =/usr/lib64/distcc/bin/x86_64-pc-linux-gnu-gcc " IN_TMPDIR=1 SILENT=1 /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizer s-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go/buildgo.sh FAILED: lib/tsan/CMakeFiles/GotsanRuntimeCheck ^^^^^^ cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go && env "CC=/usr/lib6 4/distcc/bin/x86_64-pc-linux-gnu-gcc " IN_TMPDIR=1 SILENT=1 /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/wo rk/compiler-rt-5.0.0.src/lib/tsan/go/buildgo.sh # emerge --info =sys-libs/compiler-rt-sanitizers-5.0.0 Portage 2.3.6 (python 3.5.3-final-0, default/linux/amd64/13.0/desktop/plasma/systemd, gcc-6.4.0, glibc-2.23-r4, 4.12.9-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-4.12.9-gentoo-x86_64-Intel-R-_Core-TM-_i7-2600_CPU_@_3.40GHz-with-gentoo-2.3 KiB Mem: 15864960 total, 6798692 free KiB Swap: 8171516 total, 8171516 free Timestamp of repository gentoo: Wed, 13 Sep 2017 06:45:01 +0000 sh dash 0.5.8.2 ld GNU gold (Gentoo 2.28.1 p1.0 2.28.1) 1.14 distcc 3.2rc1 x86_64-pc-linux-gnu [enabled] ccache version 3.3.4 [disabled] app-shells/bash: 4.3_p48-r1::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, 3.5.3::gentoo dev-util/ccache: 3.3.4-r1::gentoo dev-util/cmake: 3.7.2::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.3::gentoo sys-apps/sandbox: 2.10-r3::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.11.6-r1::gentoo, 1.15-r2::gentoo sys-devel/binutils: 2.28.1::gentoo sys-devel/gcc: 6.4.0::gentoo sys-devel/gcc-config: 1.8-r1::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1::gentoo sys-kernel/linux-headers: 4.10::gentoo (virtual/os-headers) sys-libs/glibc: 2.23-r4::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.europe.gentoo.org/gentoo-portage priority: -1000 x-portage location: /usr/local/portage masters: gentoo priority: 0 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=sandybridge -msahf --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192 -flto=8 -fuse-linker-plugin -floop-nest-optimize -ftree-loop-distribution -fgraphite-identity -ftree-vectorize" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /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-php7.0/ext-active/ /etc/php/cgi-php7.0/ext-active/ /etc/php/cli-php7.0/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -march=sandybridge -msahf --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=8192 -flto=8 -fuse-linker-plugin -floop-nest-optimize -ftree-loop-distribution -fgraphite-identity -ftree-vectorize" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--keep-going y --with-bdeps y" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs cgroup compress-build-logs config-protect-if-modified distcc distlocks ebuild-locks ipc-sandbox merge-sync news parallel-fetch protect-owned sandbox sfperms split-elog split-log strict test unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://tux.rainside.sk/gentoo/ http://mirror.leaseweb.com/gentoo/ http://ftp.uni-erlangen.de/pub/mirrors/gentoo http://ftp.spline.inf.fu-berlin.de/mirrors/gentoo/" LANG="it_IT.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,--hash-style=gnu -Wl,--sort-common -flto=8 -fuse-linker-plugin -floop-nest-optimize -ftree-loop-distribution -fgraphite-identity -ftree-vectorize" MAKEOPTS="-j11 -l8" 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 --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac aalib acl acpi activities adns alsa amd64 ao audiofile bash-completion bluetooth branding bzip2 cairo caps cdda cddb cdparanoia cdr cli cracklib crypt css cups curl cxx dbus declarative dga djvu dri dts dvd dvdr emboss encode exif expat fbcon ffmpeg fftw firefox flac fontconfig foomaticdb fortran ftp gd gdbm geoip gif gimp glamor gmp gnutls gphoto2 gpm graphviz gtk handbook iconv icu idn imagemagick imlib ipv6 java javascript jbig jpeg jpeg2k kde kipi kwallet lame lcms libass libcaca libnotify libsamplerate lm_sensors lua lzma lzo mad mmap mng modules mp3 mp4 mpeg mplayer multilib musicbrainz ncurses nls nptl nsplugin offensive ogg openal openexr opengl openmp pam pango pcre pdf phonon plasma png policykit postscript ppds pulseaudio qml qt3support qt4 qt5 rdesktop readline recode samba sctp sdl seccomp session sndfile sockets speex spell sqlite ssl startup-notification subversion svg symlink syslog systemd sysvipc taglib theora threads tidy tiff truetype udev udisks unicode upower usb vaapi vcd vim-syntax vnc vorbis wayland widgets win32codecs wmf wxwidgets x264 xattr xcb xcomposite xine xinerama xml xpm xscreensaver xv xvid yahoo zlib" ABI_X86="64" ALSA_CARDS="hda-intel virmidi" 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="kodak ptp2" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" CURL_SSL="gnutls" ELIBC="glibc" 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="pc" INPUT_DEVICES="libinput" KERNEL="linux" L10N="it en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="nlpsolver" LINGUAS="it it_IT" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" POSTGRES_TARGETS="postgres9_5" PYTHON_TARGETS="python2_7 python3_5 pypy pypy3" RUBY_TARGETS="ruby22" 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, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS # emerge -1pqv =sys-libs/compiler-rt-sanitizers-5.0.0 [ebuild N ] sys-libs/compiler-rt-sanitizers-5.0.0 USE="{test}"
At my tinderbox I had to kill the test suite after 8 hours of inactivity, and yes, there're multiple issues with the test suite.
Hmm, do you have dev-lang/go installed?
Created attachment 495426 [details, diff] 0001-remove-SILENT-from-gotsan-test.patch Could you apply this patch to the package's sources (e.g. via user patches) and attach the build log afterwards? It should get verbose results from the failing list.
(In reply to Michał Górny from comment #2) > Hmm, do you have dev-lang/go installed? Yes.
(In reply to Michał Górny from comment #3) > Created attachment 495426 [details, diff] [details, diff] > 0001-remove-SILENT-from-gotsan-test.patch > > Could you apply this patch to the package's sources (e.g. via user patches) > and attach the build log afterwards? It should get verbose results from the > failing list. I will try, but no sooner than thursday, when I'm back at work.
(In reply to Michał Górny from comment #3) > Created attachment 495426 [details, diff] [details, diff] > 0001-remove-SILENT-from-gotsan-test.patch > > Could you apply this patch to the package's sources (e.g. via user patches) > and attach the build log afterwards? It should get verbose results from the > failing list. [146/162] cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go && env "CC=/usr/lib64/distcc/bin/x86_64-pc-linux-gnu-gcc " IN_TMPDIR=1 /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go/buildgo.sh FAILED: lib/tsan/CMakeFiles/GotsanRuntimeCheck cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go && env "CC=/usr/lib64/distcc/bin/x86_64-pc-linux-gnu-gcc " IN_TMPDIR=1 /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go/buildgo.sh /usr/lib64/distcc/bin/x86_64-pc-linux-gnu-gcc gotsan.cc -c -o /tmp/gotsan.eUouLVSGII/race_linux_amd64.syso -I../rtl -I../.. -I../../sanitizer_common -I../../../include -std=c++11 -m64 -Wall -fno-exceptions -fno-rtti -DSANITIZER_GO=1 -DSANITIZER_DEADLOCK_DETECTOR_VERSION=2 -fPIC -ffreestanding -Wno-maybe-uninitialized -Wno-unused-const-variable -Werror -Wno-unknown-warning-option -DSANITIZER_DEBUG=0 -O3 -msse3 -fomit-frame-pointer -O2 -pipe -march=sandybridge -ftree-vectorize ==3575==ERROR: ThreadSanitizer failed to allocate 0x4000 (16384) bytes at address 1756dd9d00000 (errno: 12) Segmentation fault (core dumped)
Created attachment 495724 [details] compiler-rt-sanitizers-5.0.0:20170921-071333.log.gz Build log with verbose results.
Ok, I suspect -march might be the culprit. Could you try to run it manually like this: cd /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/compiler-rt-5.0.0.src/lib/tsan/go env "CC=x86_64-pc-linux-gnu-gcc" CFLAGS="-O2 -pipe -march=sandybridge -ftree-vectorize" buildgo.sh If that fails, could you try removing -march from CFLAGS and trying again? Possibly downgrading it to -march=x86-64.
(In reply to Michał Górny from comment #8) > Ok, I suspect -march might be the culprit. > > Could you try to run it manually like this: > > cd > /var/tmp/portage_ondisk/portage/sys-libs/compiler-rt-sanitizers-5.0.0/work/ > compiler-rt-5.0.0.src/lib/tsan/go > > env "CC=x86_64-pc-linux-gnu-gcc" CFLAGS="-O2 -pipe -march=sandybridge > -ftree-vectorize" buildgo.sh > > If that fails, could you try removing -march from CFLAGS and trying again? > Possibly downgrading it to -march=x86-64. Same result :( # env "CC=x86_64-pc-linux-gnu-gcc" CFLAGS="-O2 -pipe -march=sandybridge -ftree-vectorize" ./buildgo.sh x86_64-pc-linux-gnu-gcc gotsan.cc -c -o ./race_linux_amd64.syso -I../rtl -I../.. -I../../sanitizer_common -I../../../include -std=c++11 -m64 -Wall -fno-exceptions -fno-rtti -DSANITIZER_GO=1 -DSANITIZER_DEADLOCK_DETECTOR_VERSION=2 -fPIC -ffreestanding -Wno-maybe-uninitialized -Wno-unused-const-variable -Werror -Wno-unknown-warning-option -DSANITIZER_DEBUG=0 -O3 -msse3 -fomit-frame-pointer -O2 -pipe -march=sandybridge -ftree-vectorize ==16229==ERROR: ThreadSanitizer failed to allocate 0x4000 (16384) bytes at address 1759ff5080000 (errno: 12) Segmentation fault (core dumped) # env "CC=x86_64-pc-linux-gnu-gcc" CFLAGS="-O2 -pipe -ftree-vectorize" sudo ./buildgo.sh Password: x86_64-pc-linux-gnu-gcc gotsan.cc -c -o ./race_linux_amd64.syso -I../rtl -I../.. -I../../sanitizer_common -I../../../include -std=c++11 -m64 -Wall -fno-exceptions -fno-rtti -DSANITIZER_GO=1 -DSANITIZER_DEADLOCK_DETECTOR_VERSION=2 -fPIC -ffreestanding -Wno-maybe-uninitialized -Wno-unused-const-variable -Werror -Wno-unknown-warning-option -DSANITIZER_DEBUG=0 -O3 -msse3 -fomit-frame-pointer -O2 -pipe -ftree-vectorize ==17862==ERROR: ThreadSanitizer failed to allocate 0x4000 (16384) bytes at address 1785c41580000 (errno: 12) Segmentation fault (core dumped) # env "CC=x86_64-pc-linux-gnu-gcc" CFLAGS="-O2 -pipe -march=x86-64 -ftree-vectorize" ./buildgo.sh x86_64-pc-linux-gnu-gcc gotsan.cc -c -o ./race_linux_amd64.syso -I../rtl -I../.. -I../../sanitizer_common -I../../../include -std=c++11 -m64 -Wall -fno-exceptions -fno-rtti -DSANITIZER_GO=1 -DSANITIZER_DEADLOCK_DETECTOR_VERSION=2 -fPIC -ffreestanding -Wno-maybe-uninitialized -Wno-unused-const-variable -Werror -Wno-unknown-warning-option -DSANITIZER_DEBUG=0 -O3 -msse3 -fomit-frame-pointer -O2 -pipe -march=x86-64 -ftree-vectorize ==18276==ERROR: ThreadSanitizer failed to allocate 0x4000 (16384) bytes at address 176b0e7380000 (errno: 12) Segmentation fault (core dumped)
Do you happen to have gcc5 or 7 installed? I have both but not 6, so maybe it's an issue specific to gcc6. If so, you could try with CC substituted appropriately. Another idea would be chown-ing the directory to your user and trying as your regular user. Though I don't think that would be the case. Do you have any idea what could be 'special' about your configuration that could trigger this?
(In reply to Michał Górny from comment #10) > Do you happen to have gcc5 or 7 installed? Sorry, no. > I have both but not 6, so maybe > it's an issue specific to gcc6. If so, you could try with CC substituted > appropriately. I'll see if I have the time to install another gcc next week. As a further data point, if I use clang instead of gcc, I get: # env "CC=/usr/lib/llvm/5/bin/clang" CFLAGS="-O2 -pipe -march=sandybridge -ftree-vectorize" sudo ./buildgo.sh Password: /usr/lib/llvm/5/bin/clang gotsan.cc -c -o ./race_linux_amd64.syso -I../rtl -I../.. -I../../sanitizer_common -I../../../include -std=c++11 -m64 -Wall -fno-exceptions -fno-rtti -DSANITIZER_GO=1 -DSANITIZER_DEADLOCK_DETECTOR_VERSION=2 -fPIC -ffreestanding -Wno-maybe-uninitialized -Wno-unused-const-variable -Werror -Wno-unknown-warning-option -DSANITIZER_DEBUG=0 -O3 -msse3 -fomit-frame-pointer -O2 -pipe -march=sandybridge -ftree-vectorize ================== WARNING: DATA RACE Read at 0x000000de0000 by goroutine 2: <null>() <null>:0 +0x0 Previous write at 0x000000de0000 by main goroutine: <null>() <null>:0 +0x0 <null>() <null>:0 +0x0 Goroutine 2 (running) created at: <null>() <null>:0 +0x0 ================== Found 1 data race(s) > > Another idea would be chown-ing the directory to your user and trying as > your regular user. Though I don't think that would be the case. > > Do you have any idea what could be 'special' about your configuration that > could trigger this? Most of my system is built with LTO enabled and graphite loop transformations (not GCC, of course, those options are filtered, AFAIK). Shall I try to uninstall dev-lang/go?
(In reply to Paolo Pedroni from comment #11) > (In reply to Michał Górny from comment #10) > > Do you happen to have gcc5 or 7 installed? > > Sorry, no. > > > I have both but not 6, so maybe > > it's an issue specific to gcc6. If so, you could try with CC substituted > > appropriately. > > I'll see if I have the time to install another gcc next week. As a further > data point, if I use clang instead of gcc, I get: > # env "CC=/usr/lib/llvm/5/bin/clang" CFLAGS="-O2 -pipe -march=sandybridge > -ftree-vectorize" sudo ./buildgo.sh > Password: > /usr/lib/llvm/5/bin/clang gotsan.cc -c -o ./race_linux_amd64.syso -I../rtl > -I../.. -I../../sanitizer_common -I../../../include -std=c++11 -m64 -Wall > -fno-exceptions -fno-rtti -DSANITIZER_GO=1 > -DSANITIZER_DEADLOCK_DETECTOR_VERSION=2 -fPIC -ffreestanding > -Wno-maybe-uninitialized -Wno-unused-const-variable -Werror > -Wno-unknown-warning-option -DSANITIZER_DEBUG=0 -O3 -msse3 > -fomit-frame-pointer -O2 -pipe -march=sandybridge -ftree-vectorize > ================== > WARNING: DATA RACE > Read at 0x000000de0000 by goroutine 2: > <null>() > <null>:0 +0x0 > > Previous write at 0x000000de0000 by main goroutine: > <null>() > <null>:0 +0x0 > <null>() > <null>:0 +0x0 > > Goroutine 2 (running) created at: > <null>() > <null>:0 +0x0 > ================== > Found 1 data race(s) Well, that's the expected result. So at least we know it's specific to gcc in your system. > > Another idea would be chown-ing the directory to your user and trying as > > your regular user. Though I don't think that would be the case. > > > > Do you have any idea what could be 'special' about your configuration that > > could trigger this? > > Most of my system is built with LTO enabled and graphite loop > transformations (not GCC, of course, those options are filtered, AFAIK). Hmm, but then it would have to be something that's used by gcc but not by clang. No clue what that could be. > Shall I try to uninstall dev-lang/go? I don't think that's relevant. That was a bad guess.
I tried with gcc-7.2.0 and got the same error...
I rebuilt my whole system without graphite loop trasformations and I still get this same error.
I also see a segfault in the GotsanRuntimeCheck test with both gcc 6.4 and 7.2. Fwiw, the rest of the system is ~amd64 built with gcc 6.4 and -Og.
Good or bad news. I've just started hitting this on my LLVM testing chroot.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=69f0549cf61cd3a3f1293565ad46698c81cd8802 commit 69f0549cf61cd3a3f1293565ad46698c81cd8802 Author: Michał Górny <mgorny@gentoo.org> AuthorDate: 2018-01-09 20:38:34 +0000 Commit: Michał Górny <mgorny@gentoo.org> CommitDate: 2018-01-09 20:45:21 +0000 sys-libs/compiler-rt-sanitizers: Default to building using clang Default to building using clang rather than gcc since the latter is starting to cause more issues, most notably GotsanRuntimeCheck segfaulting more commonly than it used to. Closes: https://bugs.gentoo.org/630958 .../compiler-rt-sanitizers-6.0.9999.ebuild | 11 +++++++++-- .../compiler-rt-sanitizers/compiler-rt-sanitizers-9999.ebuild | 11 +++++++++-- sys-libs/compiler-rt-sanitizers/metadata.xml | 4 ++++ 3 files changed, 22 insertions(+), 4 deletions(-)
