Bug 808201 – =dev-util/android-tools-31.0.0_p1 fails due to -Werror (when -ftracer is used): error: ‘p_minus_two’ may be used uninitialized [-Werror=maybe-uninitialized]

• Product: Gentoo Linux
• Status: UNCONFIRMED ---

[Description Torsten Kaiser 2021-08-14 15:39:20 UTC]

Created attachment 732892 [details]
failed build with -O2 -ftracer

Using -ftrace in CFLAGS results in android-tools failing to compile, because of the following warning, that gets turned into a error by -Werror:

FAILED: vendor/boringssl/crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o
/usr/bin/x86_64-pc-linux-gnu-gcc -DBORINGSSL_DISPATCH_TEST -DBORINGSSL_HAVE_LIBUNWIND -DBORINGSSL_IMPLEMENTATION -I/var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/third_party/googletest/include -I/var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/../include -I/var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/fipsmodule/../../include  -pipe -march=znver1 -O2 -ftracer -Werror -Wformat=2 -Wsign-compare -Wmissing-field-initializers -Wwrite-strings -Wvla -ggdb -Wall -fvisibility=hidden -fno-common -Wno-free-nonheap-object -Wimplicit-fallthrough -Wmissing-prototypes -Wold-style-definition -Wstrict-prototypes -Wshadow -std=c11 -D_XOPEN_SOURCE=700 -MD -MT vendor/boringssl/crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o -MF vendor/boringssl/crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o.d -o vendor/boringssl/crypto/fipsmodule/CMakeFiles/fipsmodule.dir/bcm.c.o -c /var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/fipsmodule/bcm.c
In file included from /var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/fipsmodule/bcm.c:45:
/var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/fipsmodule/bn/exponentiation.c: In function ‘bn_mod_inverse0_prime_mont_small’:
/var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/fipsmodule/bn/exponentiation.c:822:18: error: ‘p_minus_two’ may be used uninitialized [-Werror=maybe-uninitialized]
  822 |   if (p_minus_two[0] >= 2) {
      |       ~~~~~~~~~~~^~~
/var/tmp/portage/dev-util/android-tools-31.0.0_p1/work/android-tools-31.0.0p1/vendor/boringssl/crypto/fipsmodule/bn/exponentiation.c:819:12: note: ‘p_minus_two’ declared here
  819 |   BN_ULONG p_minus_two[BN_SMALL_MAX_WORDS];
      |            ^~~~~~~~~~~
cc1: all warnings being treated as errors
ninja: build stopped: subcommand failed.
 * ERROR: dev-util/android-tools-31.0.0_p1::gentoo failed (compile phase):
 *   ninja -v -j16 -l0 failed

-ftrace might not be supported configuration, but -Werror is not really allowed -> Bug 260867

Attached is a failing build.log with CFLAGS reduced to "-pipe -march=znver1 -O2 -ftracer"

Portage 3.0.20 (python 3.10.0-candidate-1, default/linux/amd64/17.1, gcc-11.2.0, glibc-2.33-r5, 5.11.0-rc5 x86_64)
=================================================================
                         System Settings
=================================================================
System uname: Linux-5.11.0-rc5-x86_64-AMD_Ryzen_7_1700X_Eight-Core_Processor-with-glibc2.33
KiB Mem:    32830492 total,  15896844 free
KiB Swap:   15720380 total,  15637964 free
Timestamp of repository gentoo: Sat, 14 Aug 2021 10:00:01 +0000
Head commit of repository gentoo: bb6d1045102b724b2c0d8da42d926cfb733b0eed
sh bash 5.1_p8
ld GNU ld (Gentoo 2.36.1 p4) 2.36.1
app-shells/bash:          5.1_p8::gentoo
dev-java/java-config:     2.3.1::gentoo
dev-lang/perl:            5.34.0-r2::gentoo
dev-lang/python:          2.7.18_p11::gentoo, 3.8.11::gentoo, 3.9.6_p1::gentoo, 3.10.0_rc1_p1::gentoo
dev-lang/rust:            1.54.0::gentoo
dev-util/cmake:           3.21.1::gentoo
sys-apps/baselayout:      2.7-r3::gentoo
sys-apps/openrc:          0.43.3::gentoo
sys-apps/sandbox:         2.24::gentoo
sys-devel/autoconf:       2.13-r1::gentoo, 2.71-r1::gentoo
sys-devel/automake:       1.16.4::gentoo
sys-devel/binutils:       2.36.1-r2::gentoo
sys-devel/gcc:            9.4.0::gentoo, 10.3.0-r2::gentoo, 11.2.0::gentoo
sys-devel/gcc-config:     2.4::gentoo
sys-devel/libtool:        2.4.6-r6::gentoo
sys-devel/make:           4.3::gentoo
sys-kernel/linux-headers: 5.13::gentoo (virtual/os-headers)
sys-libs/glibc:           2.33-r5::gentoo
Repositories:

gentoo
    location: /usr/portage
    sync-type: rsync
    sync-uri: rsync://rsync.gentoo.org/gentoo-portage
    priority: -1000
    sync-rsync-verify-jobs: 1
    sync-rsync-verify-metamanifest: yes
    sync-rsync-extra-opts: 
    sync-rsync-verify-max-age: 24

local
    location: /var/ebuilds
    masters: gentoo
    priority: 0

java
    location: /usr/portage-local/layman/java
    masters: gentoo
    priority: 50

x11
    location: /usr/portage-local/layman/x11
    masters: gentoo
    priority: 50

ACCEPT_KEYWORDS="amd64 ~amd64"
ACCEPT_LICENSE="* -@EULA"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-pipe -march=znver1 -O2 -ftracer"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt /var/bind"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/php/apache2-php8.0/ext-active/ /etc/php/cgi-php8.0/ext-active/ /etc/php/cli-php8.0/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="-pipe -march=znver1 -O2 -ftracer"
DISTDIR="/usr/portage/distfiles"
EMERGE_DEFAULT_OPTS="--with-bdeps y --jobs=6 --load-average=20 --keep-going"
ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR"
FCFLAGS="-O2 -pipe"
FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userpriv usersandbox usersync xattr"
FFLAGS="-O2 -pipe"
GENTOO_MIRRORS="http://distfiles.gentoo.org"
LANG="en_GB.utf8"
LDFLAGS="-Wl,-O1 -Wl,--as-needed"
LINGUAS="de en"
MAKEOPTS="-j16"
PKGDIR="/var/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="7zip R S3TC X a52 aac aalib ace acl acpi ads aften aio alisp alsa altenburgcards amarok amd64 amr amrnb amrr amrwb animgif ao apache2 apng aqua_theme archive async audacious audiofile aura autoipd avahi bcel bcp bdf beagle bidi bigpatch binfilter bittorrent bl blas blender-game bluetooth bonusscripts boost bzip2 c++ cairo calendar caps carbone_theme cblas-external cdda cdio cdparanoia cdr cgi chm chroot cifsupcall cisco clang cli client clucene cmdctrl cmdsubmenu colord compress connectionstatus consolekit contactnotes context contrib corefonts cpio cpufreq crypt cryptsetup cscope css ctype cups curl cutterlimit cutterqueue cuttime cvs cvsgraph cxx cycles dar64 dbase dbm dbus dbx dc1394 dec_av dec_av2 declarative demo designer device-mapper divx djvu dlz dmi dmx dnotify doc domainkeys dot double-precision dpmod drafts dri dts dv dvb dvbplayer dvd dvdarchive dvdchapjump dvdr dvdread dvi ecc editor egl elf elogind eme-free emoticon encode enscript equalizer evdev excel exif exiv2 expat extensions extra extra-algorithms extra-cardsets extraengine extras farstream fat fbcon fdt festival ffmpeg fftw file file-icons flac fluidsynth fmod font-server fontconfig fortran fping fpx frei0r ftp fts3 fuse g3dvl gbm gcj gd gdbm gecko gegl geoip gflags gif gimp git gkrellm glade glamor gles gles1 gles2 glib glibc-omitfp glitz glsa glut gmedia gmp gnutls gopher gpac gpg gpgme gphoto2 graphics graphite graphviz gs gstreamer gtk gtk3 gui gutenprint gzip haptic harfbuzz hddtemp hdri highlight history html htmlhandbook http http2 httpd hvm hwdb ical iceweasel iconv icq icu id3 id3tag ide idea ieee1394 image imagemagick imap import-filter infowidget inherit-graph inkjar innodb inotify inspector introspection ipfilter ipsec iptc ipv6 irc irrlicht ithreads jabber jack jad jadetex java java-external java6 jce jemalloc jingle jit jni john jpeg jpeg2k juju jumpplay kde kdecards kdenlive kdepim kdrive kerberos kexi kipi kmid kpathsea ktts kvm lapack latex lcms ldap legacy-systray libcaca libglvnd libkms libmpeg2 libmysqlclient libnotify libsamplerate libsexy libssh2 libtirpc libvisual libwww liemikuutio lights livebuffer llvm llvm-shared-libs lm_sensors logrotate logviewer loop-playback lto lua lucene lyx lzma lzo mad magic mail mailwrapper mainmenuhooks maps masquerade math matroska maya-shaderlibrary mbox mbrola md5sum mdev mdnsresponder-compat meanwhile melt menu-plugin menubar menuorg messages metric mhash midi mikmod mime mimencode minizip mixer mjpeg mmap mmx mmxext mng mod modplug mounts-check mozdevelop mozdom mozilla mp2 mp3 mp4 mp4live mpd mpeg mpeg2 mpg123 mpi mplayer mppe-mppc mpu401 mschap msn mtp multilib multiprocess musepack music mysql mysqli mythtv nagios-dns nagios-ntp nagios-ping nagios-ssh nat native-exceptions ncurses nepomuk net netjack netmeeting network network-cron networkmanager nfs nfsidmap nfsv4 nfsv41 nls nntp normalize nova nptl nsplugin nspr nss ntfs ntfsprogs nuv objc offensive ogg ogg123 ole opcache opencl openexr opengl openimageio openmp openssh openssl openvpn opus osmesa otr pam pango pascal pcap pcre pcre16 pcre32 pda pdf pdfimport perl php physfs pim pixmaps pkcs11 plasma player plotutils pmu png policykit portaudio posix postfix postproc postscript povray pptp printsupport pth pulseaudio python qemu qml qt3support qt5 query-browser quicktime r600-llvm-compiler radio rar raw rc5 rdesktop rdp readline realmedia remix replaygain restrict-javascript rle romio rpc rss rtc rtmp rtsp samba sasl sbig scanner screen screencast script scripttools sdk sdl sdl-image sdl-sound sdl2 sdlaudio seamonkey search seccomp secure-delete semantic-desktop sensord server shared-dricore shorten shout sid signatures simplexml skins smime smp smtp sndfile sockets socks5 solver songs sortrecords sound soundex sounds sox speech speedo speex spell spice split-usr sql sqlite sqlite3 srtp sse sse2 sse3 sse4a ssl ssse3 stars stats stemmer stlport stream strongswan_plugins_aesni strongswan_plugins_gcm strongswan_plugins_rdrand submenu subtitles subversion suhosin suid-wrapper svc svg svgz swat sylpheed sysfs syslog system-bootstrap system-cairo system-icu system-jpeg system-jsoncpp system-libvncserver system-libvpx system-sqlite systray sysvipc szip t1lib taglib tagwriting tb4 tcpd teletext tetex tex text texteffect textures tftp tga themes theora thesaurus threads threadsafe tidy tiff timercmd timerinfo tk tls toolbar tools transcode trayicon truetype tta ttxtsubs twolame udev udisks ui unicode unlock-notify upcall usb usbredir userfiles utils uudeview uuencode v4l v4l2 vaapi vamp vcd vcdx vdpau vdr video videos view vim-syntax virgl visualization vlm vnc vncviewer voice volctrl vorbis vorbis-psy vpx vulkan wav wavpack wayland wayland-compositor web webdav webinterface webkit webm webp widgets wifi winbind winpopup wireshark wma wmf wmp wxwidgets x264 x265 xanim xattr xcb xcf xcomposite xephyr xetex xext xface xforms xfs xft xhtml xine xinerama xkb xml xmp xnest xorg xosd xplanet xpm xrandr xrender xscreensaver xsl xslt xspice xv xvfb xvid xvmc xvnc xwayland yahoo yv12 zeroconf zip zlib zrtp zvbi" ABI_X86="32 64" ADA_TARGET="gnat_2018" 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 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" APACHE2_MPMS="worker" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="evdev" KERNEL="linux" L10N="de en" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-0" POSTGRES_TARGETS="postgres12 postgres13" PYTHON_SINGLE_TARGET="python3_9" PYTHON_TARGETS="python3_9 python3_10" QEMU_SOFTMMU_TARGETS="x86_64 alpha arm i386 m68k mips mips64 mips64el mipsel ppc ppc64 ppcemb s390x sparc sparc64" RUBY_TARGETS="ruby27 ruby30" USERLAND="GNU" VIDEO_CARDS="dummy v4l virgl radeon r600 radeonsi amdgpu" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq proto steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, RUSTFLAGS

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

dev-util/android-tools-31.0.0_p1::gentoo was built with the following:
USE="python" ABI_X86="(64)" ELIBC="(glibc)" KERNEL="(linux)" PYTHON_TARGETS="python3_9 -python3_8" USERLAND="(GNU)"
CFLAGS="-pipe -march=znver1 -O3 -fomit-frame-pointer -fivopts -fweb -frename-registers"
CXXFLAGS="-pipe -march=znver1 -O3 -fomit-frame-pointer -fivopts -fweb -frename-registers"