See title. If you have both flags enabled qtdeclarative will cause runtime issues for packages that rely on it. Both flags by themselves seem ok, it's when they're combined that it becomes an issue. However, if you compile with -ffunction-sections -Wl,--icf=safe then it's fine. Rather than filter out -ffuction-sections, -Wl,--icf=all, or both one could use replace-flags -Wl,--icf=all -Wl,--icf=safe which is what I'm currently doing. Attaching logs with build flags to show an example. kde-frameworks/kcmutils will segfault during the testing phase so that's the only way I can prove that this is happening. Reproducible: Always Steps to Reproduce: 1. CFLAGS="${CFLAGS} -ffunction-sections" LDFLAGS="${LDFLAGS} -Wl,--icf=all" 2. compile dev-qt/qtdeclarative-6.7.2 3. ALLOW_TEST=all FEATURES=test ebuild kde-frameworks/kcmtuls-6.3.0.ebuild clean test Actual Results: 4/4 Test #3: kcmloadtest ......................***Exception: SegFault 0.18 sec Expected Results: 100% tests passed Possibly more segfaults but that's all I was able to find since I had a busted plasmashell with libQt6Qml.so segfault complaints in dmesg output. kcmutils I noticed failed its test phase with a segfault after the qt-6.7.2 upgrade.
Created attachment 896217 [details] qtdeclarative icf=all/icf=safe and kcmutils pass/fail logs Here are the logs. You can see the *FLAGS in use for each of them.
I forgot, I did compile all of qt-6.7.1 and the same thing happened. I haven't tested qt:5 nor have I tested gcc with -fuse-ld=lld to see if the same combination fails with it. Anyway, here's emerge --info qtdeclarative Portage 3.0.65 (python 3.12.4-final-0, default/linux/amd64/23.0/llvm/systemd, gcc-13, glibc-2.39-r9, 6.9.5-clangx86_64) ================================================================= System Settings ================================================================= System uname: Linux-6.9.5-clang-x86_64-AMD_Ryzen_9_3950X_16-Core_Processor-with-glibc2.39 KiB Mem: 32818888 total, 12433156 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Fri, 21 Jun 2024 09:49:04 +0000 Head commit of repository gentoo: 64f04748b0afc1f5165eb20a4db83239850fc1dc Head commit of repository audio-overlay: 20bf7b1970d2e2e20ed33f6b9563a659190ae368 Head commit of repository brave-overlay: d625d99a411919fc02d4ed91cd5e15f17b95dfd5 Head commit of repository cg: ba8674c2b86cca2964c53c34db7c44c1a66cb528 Head commit of repository guru: b8d29619de43a844d6b94f313cbf1c94fd01c6f8 Head commit of repository src_prepare-overlay: ef2df54710e060867bbef5f4e105b906623866f3 Head commit of repository steam-overlay: fc142da83eb4eb440c787e9f1befe5945b09f485 sh bash 5.2_p26-r4 ld GNU ld (Gentoo 2.42 p3) 2.42.0 app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p26-r4::gentoo dev-build/autoconf: 2.72-r1::gentoo dev-build/automake: 1.16.5-r2::gentoo dev-build/cmake: 3.29.3::gentoo dev-build/libtool: 2.4.7-r4::gentoo dev-build/make: 4.4.1-r1::gentoo dev-build/meson: 1.4.1::gentoo dev-java/java-config: 2.3.3-r1::gentoo dev-lang/perl: 5.40.0::gentoo dev-lang/python: 3.12.4_p1::gentoo dev-lang/rust-bin: 1.78.0::gentoo sys-apps/baselayout: 2.15::gentoo sys-apps/sandbox: 2.38::gentoo sys-apps/systemd: 255.7::gentoo sys-devel/binutils: 2.42-r1::gentoo sys-devel/binutils-config: 5.5::gentoo sys-devel/clang: 18.1.7::gentoo sys-devel/gcc: 13.3.1_p20240614::gentoo, 14.1.1_p20240615::gentoo sys-devel/gcc-config: 2.11::gentoo sys-devel/lld: 18.1.7::gentoo sys-devel/llvm: 18.1.7::gentoo sys-kernel/linux-headers: 6.9::gentoo (virtual/os-headers) sys-libs/glibc: 2.39-r9::gentoo Repositories: gentoo location: /etc/portage/repos/gentoo sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo.git priority: 0 eclass-overrides: unhappy-ending volatile: True audio-overlay location: /etc/portage/repos/audio-overlay sync-type: git sync-uri: https://github.com/gentoo-audio/audio-overlay.git masters: gentoo priority: 50 eclass-overrides: audio-overlay volatile: True brave-overlay location: /etc/portage/repos/brave-overlay sync-type: git sync-uri: https://gitlab.com/jason.oliveira/brave-overlay.git masters: gentoo priority: 50 eclass-overrides: brave-overlay volatile: True cg location: /etc/portage/repos/cg sync-type: git sync-uri: https://github.com/brothermechanic/cg masters: gentoo priority: 50 eclass-overrides: cg volatile: True guru location: /etc/portage/repos/guru sync-type: git sync-uri: https://anongit.gentoo.org/git/repo/proj/guru masters: gentoo priority: 50 eclass-overrides: guru volatile: True src_prepare-overlay location: /etc/portage/repos/src_prepare-overlay sync-type: git sync-uri: https://gitlab.com/src_prepare/src_prepare-overlay.git masters: gentoo priority: 50 eclass-overrides: src_prepare-overlay volatile: True steam-overlay location: /etc/portage/repos/steam-overlay sync-type: git sync-uri: https://github.com/anyc/steam-overlay masters: gentoo priority: 50 eclass-overrides: steam-overlay volatile: True unhappy-ending location: /etc/portage/repos/unhappy-ending masters: gentoo priority: 100 eclass-overrides: unhappy-ending volatile: True Binary Repositories: gentoobinhost priority: 1 sync-uri: https://distfiles.gentoo.org/releases/amd64/binpackages/23.0/x86-64_llvm Installed sets: @desktop-apps, @desktop-emulation, @dev-qt, @kde-apps, @kde-frameworks, @kde-misc, @kde-plasma, @production-audio, @steam-client, @system-hardware, @system-kernel, @system-tools, @toolchain-llvm ACCEPT_KEYWORDS="amd64 ~* ~amd64" ACCEPT_LICENSE="*" ADDR2LINE="llvm-addr2line" AR="llvm-ar" AS="llvm-as" CBUILD="x86_64-pc-linux-gnu" CC="clang" CFLAGS="-march=znver2 -O3 -pipe -ffunction-sections -fdiagnostics-color=always -frecord-gcc-switches -Werror=format-security -Werror=implicit-function-declaration -Werror=incompatible-library-redeclaration -Werror=strict-aliasing" 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/php/apache2-php8.3/ext-active/ /etc/php/cgi-php8.3/ext-active/ /etc/php/cli-php8.3/ext-active/ /etc/php/fpm-php8.3/ext-active/ /etc/php/phpdbg-php8.3/ext-active/ /etc/revdep-rebuild /etc/sandbox.d" CPP="clang-cpp" CXX="clang++" CXXFILT="llvm-cxxfilt" CXXFLAGS="-march=znver2 -O3 -pipe -ffunction-sections -fdiagnostics-color=always -frecord-gcc-switches -Werror=format-security -Werror=odr -Werror=strict-aliasing" DISTDIR="/etc/portage/package.distfiles" EMERGE_DEFAULT_OPTS="-a -j16 -l12 --alphabetical --autounmask=n --columns --quiet-build --quiet-unmerge-warn --with-bdeps=y" 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=znver2 -O3 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live candy config-protect-if-modified distlocks ebuild-locks fail-clean fixlafiles ipc-sandbox merge-sync merge-wait multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms split-log strict test unknown-features-warn unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-march=znver2 -O3 -pipe" GCOV="llvm-cov" GENTOO_MIRRORS="http://distfiles.gentoo.org /etc/portage/package.mirrors" LANG="en_US.utf8" LC_ALL="en_US.utf8" LD="ld.lld" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,--as-needed -Wl,--icf=all -Wl,--defsym=__gentoo_check_ldflags__=0" LEX="flex" LINGUAS="*" MAKEOPTS="-j16 -l12" NM="llvm-nm" OBJCOPY="llvm-objcopy" OBJDUMP="llvm-objdump" PKGDIR="/etc/portage/package.distfiles/bin" 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="/etc/portage/package.tmp" RANLIB="llvm-ranlib" READELF="llvm-readelf" SHELL="/bin/bash" SIZE="llvm-size" STRINGS="llvm-strings" STRIP="llvm-strip" USE="acl aes amd64 avx avx2 bzip2 cet clang crypt f16c fma3 gdbm iconv ipv6 libtirpc llvm-libunwind mmx mmxext multilib ncurses nls openmp pam pclmul pcre popcnt rdrand readline seccomp sha sse sse2 sse3 sse4_1 sse4_2 sse4a ssl ssse3 systemd test test-rust udev unicode xattr zlib" ABI_X86="64" ADA_TARGET="gcc_12" CALLIGRA_FEATURES="karbon sheets words" CPU_FLAGS_X86="aes avx avx2 f16c fma3 mmx mmxext pclmul popcnt rdrand sha sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3" ELIBC="glibc" INPUT_DEVICES="libinput wacom" KERNEL="linux" L10N="*" LLVM_SLOT="18" LLVM_TARGETS="BPF NVPTX X86" LUA_SINGLE_TARGET="lua5-4" LUA_TARGETS="lua5-1" PERL_FEATURES="ithreads" PHP_TARGETS="php8-2" POSTGRES_TARGETS="postgres15" PYTHON_SINGLE_TARGET="python3_12" PYTHON_TARGETS="python3_12" QEMU_SOFTMMU_TARGETS="aarch64 arm x86_64" QEMU_USER_TARGETS="x86_64" RUBY_TARGETS="ruby32" VIDEO_CARDS="nvidia virgl" Unset: ARFLAGS, ASFLAGS, CCLD, CONFIG_SHELL, CPPFLAGS, CTARGET, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GPROF, INSTALL_MASK, LFLAGS, LIBTOOL, MAKE, MAKEFLAGS, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, YACC, YFLAGS ================================================================= Package Settings ================================================================= dev-qt/qtdeclarative-6.7.2::gentoo was built with the following: USE="-accessibility jit network opengl -qmlls sql ssl -svg vulkan widgets" ABI_X86="(64)" CFLAGS="-march=znver2 -O2 -pipe -ffunction-sections -fdiagnostics-color=always -frecord-gcc-switches -Werror=format-security -Werror=implicit-function-declaration -Werror=incompatible-library-redeclaration -Werror=strict-aliasing" CXXFLAGS="-march=znver2 -O2 -pipe -ffunction-sections -fdiagnostics-color=always -frecord-gcc-switches -Werror=format-security -Werror=odr -Werror=strict-aliasing" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live candy config-protect-if-modified distlocks ebuild-locks fixlafiles ipc-sandbox merge-sync multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms split-log strict test unknown-features-warn unmerge-orphans userfetch userpriv usersandbox usersync xattr" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs -Wl,--as-needed -Wl,--icf=safe -Wl,--defsym=__gentoo_check_ldflags__=0"
Don't think interested in adding workarounds for options that violates the C++ spec as I understand it, this feels like trying to deal with -ffast-math which shouldn't be expected to be safe globally. You're on your own if you use icf=all.
