Created attachment 926393 [details] build.log since gcc 14, I've been encountering the following with clang. Still reproduces as of gcc 15 and clang 20. > Comparing stages 2 and 3 > Bootstrap comparison failure! > gcc/dwarf2out.o differs diffoscope ./build/stage2-gcc/dwarf2out.o ./build/stage3-gcc/dwarf2out.o --- ./build/stage2-gcc/dwarf2out.o +++ ./build/stage3-gcc/dwarf2out.o ├── objdump --line-numbers --disassemble --demangle --reloc --no-show-raw-insn --section=.text {} │ @@ -32662,18 +32662,18 @@ │ je 12f0d <compute_comp_unit_symbol(die_struct*)+0x2ad> │ get_AT(die_struct*, dwarf_attribute): │ /var/tmp/portage/sys-devel/gcc-15.1.0/work/gcc-15.1.0/gcc/dwarf2out.cc:5444 │ mov (%rax),%ecx │ cmp $0x3,%ecx │ je 12f31 <compute_comp_unit_symbol(die_struct*)+0x2d1> │ /var/tmp/portage/sys-devel/gcc-15.1.0/work/gcc-15.1.0/gcc/dwarf2out.cc:5447 │ - cmp $0x31,%ecx │ - je 12f60 <compute_comp_unit_symbol(die_struct*)+0x300> │ cmp $0x47,%ecx │ je 12f60 <compute_comp_unit_symbol(die_struct*)+0x300> │ + cmp $0x31,%ecx │ + je 12f60 <compute_comp_unit_symbol(die_struct*)+0x300> │ bool vec_safe_iterate<dw_attr_struct, va_gc>(vec<dw_attr_struct, va_gc, vl_embed> const*, unsigned int, dw_attr_struct**): │ /var/tmp/portage/sys-devel/gcc-15.1.0/work/gcc-15.1.0/gcc/vec.h:803 │ add $0x28,%rax │ vec<dw_attr_struct, va_gc, vl_embed>::iterate(unsigned int, dw_attr_struct**) const: │ /var/tmp/portage/sys-devel/gcc-15.1.0/work/gcc-15.1.0/gcc/vec.h:977 │ cmp %rax,%rsi │ jne 12ef3 <compute_comp_unit_symbol(die_struct*)+0x293>
> emerge --info Portage 3.0.67 (python 3.12.10-final-0, default/linux/amd64/23.0/desktop/plasma/systemd, gcc-14, glibc-2.40-r8, 6.14.4-gentoo-dist-hardened x86_64) ================================================================= System uname: Linux-6.14.4-gentoo-dist-hardened-x86_64-AMD_Ryzen_7_7700X_8-Core_Processor-with-glibc2.40 KiB Mem: 32489620 total, 13232028 free KiB Swap: 10485756 total, 6532008 free Timestamp of repository gentoo: Sat, 26 Apr 2025 19:20:21 +0000 Head commit of repository gentoo: 30d66a66f01a342ad9dd0b2411d327e0310919f1 Timestamp of repository guru: Fri, 25 Apr 2025 15:35:11 +0000 Head commit of repository guru: de35a0c04613def1da5bd8ebd3b6be409c61e4bc Head commit of repository kdab-overlay: 20ef1a3e9af8b77eee75b8b9dcc0f32cb9f7ad84 Timestamp of repository lto-overlay: Mon, 19 Aug 2024 06:22:27 +0000 Head commit of repository lto-overlay: 72f4e578bd64c1c5cb3fc6ac1526bf8d009ee026 Timestamp of repository mv: Wed, 23 Apr 2025 15:38:06 +0000 Head commit of repository mv: 5f5fa398d8977585232139b858b06cb5d4f6d6f6 Timestamp of repository steam-overlay: Wed, 23 Apr 2025 15:38:10 +0000 Head commit of repository steam-overlay: 23f38449f9a86d0648566b51a51e73d9561a40e6 sh bash 5.2_p37 ld GNU ld (Gentoo 2.44 p1) 2.44.0 distcc 3.4 x86_64-pc-linux-gnu [disabled] ccache version 4.10.2 [disabled] app-misc/pax-utils: 1.3.8::gentoo app-shells/bash: 5.2_p37::gentoo dev-build/autoconf: 2.72-r1::gentoo dev-build/automake: 1.17-r1::gentoo dev-build/cmake: 3.31.5::gentoo dev-build/libtool: 2.5.4::gentoo dev-build/make: 4.4.1-r100::gentoo dev-build/meson: 1.7.0::gentoo dev-java/java-config: 2.3.4::gentoo dev-lang/perl: 5.40.2::gentoo dev-lang/python: 3.12.10::gentoo, 3.13.3::gentoo dev-lang/rust: 1.86.0-r1::gentoo dev-util/ccache: 4.10.2-r1::gentoo llvm-core/clang: 18.1.8-r6::gentoo, 19.1.7::gentoo, 20.1.3::gentoo llvm-core/lld: 19.1.7::gentoo, 20.1.3::gentoo llvm-core/llvm: 18.1.8-r6::gentoo, 19.1.7::gentoo, 20.1.3::gentoo sec-policy/selinux-base: 2.20250213-r1::gentoo sys-apps/baselayout: 2.17::gentoo sys-apps/sandbox: 2.39::gentoo sys-apps/systemd: 256.10::gentoo sys-devel/binutils: 2.44::gentoo sys-devel/binutils-config: 5.5.2::gentoo sys-devel/gcc: 14.2.1_p20250419::gentoo, 15.1.0::gentoo sys-devel/gcc-config: 2.12.1::gentoo sys-kernel/linux-headers: 6.12::gentoo (virtual/os-headers) sys-libs/glibc: 2.40-r8::gentoo sys-libs/libselinux: 3.7-r1::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: git sync-uri: https://anongit.gentoo.org/git/repo/sync/gentoo.git priority: -1000 volatile: False crossdev location: /var/db/repos/crossdev masters: gentoo volatile: False guru location: /var/db/repos/guru sync-type: git sync-uri: https://github.com/gentoo-mirror/guru.git masters: gentoo volatile: False kdab-overlay location: /var/db/repos/kdab-overlay sync-type: git sync-uri: https://github.com/KDAB/kdab-overlay.git masters: gentoo volatile: False local location: /var/db/repos/local masters: gentoo volatile: False lto-overlay location: /var/db/repos/lto-overlay sync-type: git sync-uri: https://github.com/gentoo-mirror/lto-overlay.git masters: gentoo mv volatile: False mv location: /var/db/repos/mv sync-type: git sync-uri: https://github.com/gentoo-mirror/mv.git masters: gentoo volatile: False steam-overlay location: /var/db/repos/steam-overlay sync-type: git sync-uri: https://github.com/gentoo-mirror/steam-overlay.git masters: gentoo volatile: False ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="@FREE" AR="llvm-ar" AS="clang -c" CBUILD="x86_64-pc-linux-gnu" CC="clang" CFLAGS="-march=znver4 -mprefer-vector-width=512 -O3 -flto=thin -fwhole-program-vtables" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/share/config /usr/share/gnupg/qualified.txt /usr/share/maven-bin-3.9/conf /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-php8.2/ext-active/ /etc/php/cgi-php8.2/ext-active/ /etc/php/cli-php8.2/ext-active/ /etc/php/fpm-php8.2/ext-active/ /etc/php/phpdbg-php8.2/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c" CPP="clang-cpp-20" CXX="clang++" CXXFLAGS="-march=znver4 -mprefer-vector-width=512 -O3 -flto=thin -fwhole-program-vtables" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="--autounmask --autounmask-write" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE 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 XDG_STATE_HOME" FCFLAGS="-march=znver4 -mprefer-vector-width=512 -O3 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs buildpkg-live config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync merge-wait multilib-strict network-sandbox news parallel-fetch parallel-install pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox selinux strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=znver4 -mprefer-vector-width=512 -O3 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="C.UTF8" LD="ld.lld" LDFLAGS="-flto=thin -Wl,--build-id=sha1" LEX="flex" MAKEOPTS="-j18" NM="llvm-nm" OBJCOPY="llvm-objcopy" OBJDUMP="llvm-objdump" PKGDIR="/var/cache/binpkgs" 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" RANLIB="llvm-ranlib" SHELL="/bin/zsh" STRIP="llvm-strip" USE="X a52 aac acl acpi activities aio alsa amd64 audit avif bash-completion bluetooth branding bzip2 cairo caps cdda cdr cet cjk clang colord crypt cups dbus declarative dist-kernel dri dts dvd dvdr egl encode exif ffmpeg firewalld flac flatpak gdbm geolocation gif gles2 gpm gtk gui hardened heif hip iconv icu io-uring ipv6 jpeg jpeg2k jpegxl kde keyring kf6compat kwallet lapack lcms libnotify libtirpc llvm-libunwind lm-sensors lto lz4 lzma mad mng modules-compress modules-sign mp3 mp4 mpeg mtp multilib ncurses networkmanager nls ogg openexr opengl openmp opus pam pango pcre pdf peer_perms pic pipewire pkcs11 plasma png policykit ppds pulseaudio qml qt5 qt6 rar readline scanner screencast sdl seccomp secureboot selinux semantic-desktop sound spell ssl startup-notification svg system-llvm systemd test-rust tiff tpm truetype ubac udev udisks unconfined unicode upower usb v4l vaapi vorbis vulkan wayland webp widgets wifi wxwidgets x264 xattr xcb xft xml xv xvid zeroconf zip zlib zstd" ABI_X86="64" ADA_TARGET="gcc_14" AMDGPU_TARGETS="gfx1036 gfx1100" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_anon authn_dbm authn_file authz_dbm authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir env expires ext_filter file_cache filter headers include info log_config logio mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="aes avx avx2 avx512f avx512dq avx512cd avx512bw avx512vl avx512vbmi f16c fma3 mmx mmxext pclmul popcnt rdrand sha sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax navcom oceanserver oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 tsip tripmate tnt ublox" GUILE_SINGLE_TARGET="3-0" GUILE_TARGETS="3-0" INPUT_DEVICES="libinput" KERNEL="linux" L10N="en-US de" LCD_DEVICES="bayrad cfontz glk hd44780 lb216 lcdm001 mtxorb text" LLVM_TARGETS="AArch64 X86 AMDGPU NVPTX BPF SPIRV WebAssembly" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-2" POSTGRES_TARGETS="postgres17" PYTHON_SINGLE_TARGET="python3_12" PYTHON_TARGETS="python3_12" RUBY_TARGETS="ruby32" VIDEO_CARDS="radeon radeonsi amdgpu" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, ARFLAGS, ASFLAGS, CCLD, CONFIG_SHELL, CPPFLAGS, CTARGET, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, READELF, RUSTFLAGS, SIZE, STRINGS, YACC, YFLAGS
