/usr/include/xfs/xfs_fs.h contains this inline function definition: static inline struct xfs_getparents_rec * xfs_getparents_next_rec(struct xfs_getparents *gp, struct xfs_getparents_rec *gpr) { void *next = ((void *)gpr + gpr->gpr_reclen); void *end = (void *)(uintptr_t)(gp->gp_buffer + gp->gp_bufsize); if (next >= end) return NULL; return next; //<<<< ERROR: missing cast from void* } C allows implicit casts from void* to any pointer type, but C++ does not. Thus, when including <xfs/xfs_fs.h> in a C++ compilation unit, the compiler raises this error: /usr/include/xfs/xfs_fs.h: In function 'xfs_getparents_rec* xfs_getparents_next_rec(xfs_getparents*, xfs_getparents_rec*)': /usr/include/xfs/xfs_fs.h:915:16: error: invalid conversion from 'void*' to 'xfs_getparents_rec*' [-fpermissive] 915 | return next; | ^~~~ | | | void* I encountered this error while attempting to build net-libs/libktorrent-24.08.0, but it would affect any C++ code that includes <xfs/xfs_fs.h>. # emerge -pqvO sys-fs/xfsprogs [ebuild R ] sys-fs/xfsprogs-6.10.0 USE="icu -libedit -nls (-selinux) -static-libs" # emerge --info sys-fs/xfsprogs Portage 3.0.65 (python 3.12.5-final-0, default/linux/amd64/23.0/desktop/plasma, gcc-14, glibc-2.40, 6.6.30-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-6.6.30-gentoo-x86_64-Intel-R-_Core-TM-2_Quad_CPU_Q6600_@_2.40GHz-with-glibc2.40 KiB Mem: 8143808 total, 305568 free KiB Swap: 8388604 total, 1510720 free Timestamp of repository gentoo: Tue, 27 Aug 2024 09:15:00 +0000 Head commit of repository gentoo: 423b090b2897e065782f27a9e2dad312074e8c93 Timestamp of repository 4nykey: Thu, 22 Aug 2024 15:34:12 +0000 Head commit of repository 4nykey: ffc888135c0d11e3b3c549c7d4206ea63e1d7ed8 Timestamp of repository bitcoin: Mon, 26 Aug 2024 21:33:46 +0000 Head commit of repository bitcoin: 6ffd2d990214bf6e2c20d0d33cbccfd2c2ecba4b Timestamp of repository eigenlay: Mon, 19 Aug 2024 06:22:11 +0000 Head commit of repository eigenlay: 9dfc0e40887047043a023c02c04be84266d21d93 Timestamp of repository gentoo-bootstrap: Mon, 19 Aug 2024 18:34:06 +0000 Head commit of repository gentoo-bootstrap: 9d6f4bef26b96d0542468f79dd096acb3362482c Timestamp of repository kde: Mon, 26 Aug 2024 06:48:55 +0000 Head commit of repository kde: 293231bdad33bc930f85ae289a95f70a715b915f Timestamp of repository science: Sun, 25 Aug 2024 13:18:58 +0000 Head commit of repository science: 2ec5862572ac3d70c2fa5cd9f0f5397272cf9aec sh dash 0.5.12 ld GNU ld (Gentoo 2.43 p2) 2.43.1 distcc 3.4 x86_64-pc-linux-gnu [enabled] ccache version 4.10.2 [enabled] app-misc/pax-utils: 1.3.7::gentoo app-shells/bash: 5.2_p32-r1::gentoo dev-build/autoconf: 2.72-r1::gentoo dev-build/automake: 1.16.5-r2::gentoo, 1.17-r1::gentoo dev-build/cmake: 3.30.2::gentoo dev-build/libtool: 2.4.7-r4::gentoo dev-build/make: 4.4.1-r1::gentoo dev-build/meson: 1.5.1::gentoo dev-java/java-config: 2.3.4::gentoo dev-lang/perl: 5.40.0::gentoo dev-lang/python: 3.10.14_p3::gentoo, 3.11.9_p2::gentoo, 3.12.5_p1::gentoo, 3.13.0_rc1_p3::gentoo dev-lang/rust: 1.80.1::gentoo dev-util/ccache: 4.10.2::gentoo sys-apps/baselayout: 2.15::gentoo sys-apps/openrc: 0.54.2::gentoo sys-apps/sandbox: 2.39::gentoo sys-devel/binutils: 2.43-r1::gentoo sys-devel/binutils-config: 5.5.2::gentoo sys-devel/clang: 15.0.7-r3::gentoo, 18.1.8::gentoo sys-devel/gcc: 14.2.1_p20240824::gentoo sys-devel/gcc-config: 2.11::gentoo sys-devel/lld: 18.1.8::gentoo sys-devel/llvm: 15.0.7-r6::gentoo, 18.1.8-r4::gentoo sys-kernel/linux-headers: 6.10::gentoo (virtual/os-headers) sys-libs/glibc: 2.40::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: rsync sync-uri: rsync://rsync11.us.gentoo.org/gentoo-portage/ priority: -1000 volatile: False sync-rsync-verify-max-age: 3 sync-rsync-verify-metamanifest: no sync-rsync-extra-opts: sync-rsync-verify-jobs: 1 4nykey location: /var/db/repos/4nykey sync-type: git sync-uri: https://github.com/gentoo-mirror/4nykey.git masters: gentoo volatile: False bitcoin location: /var/db/repos/bitcoin sync-type: git sync-uri: https://github.com/gentoo-mirror/bitcoin.git masters: gentoo volatile: False crossdev location: /var/db/repos/crossdev masters: gentoo volatile: False eigenlay location: /var/db/repos/eigenlay sync-type: git sync-uri: https://github.com/gentoo-mirror/eigenlay.git masters: gentoo volatile: False gentoo-bootstrap location: /var/db/repos/gentoo-bootstrap sync-type: git sync-uri: https://github.com/gentoo-mirror/gentoo-bootstrap.git masters: gentoo volatile: False kde location: /var/db/repos/kde sync-type: git sync-uri: https://github.com/gentoo-mirror/kde.git masters: gentoo volatile: False science location: /var/db/repos/science sync-type: git sync-uri: https://github.com/gentoo-mirror/science.git masters: gentoo volatile: False local location: /var/db/repos/local masters: gentoo priority: 1000 volatile: False ACCEPT_KEYWORDS="amd64 ~amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=core2 -O3 -ggdb -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/X11/xkb /usr/share/config /usr/share/easy-rsa /usr/share/gnupg/qualified.txt /usr/share/i18n/locales/en_US /usr/share/sddm/scripts/Xsetup /usr/share/themes/oxygen-gtk/gtk-2.0 /usr/share/themes/oxygen-gtk/gtk-3.0" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dbus-1 /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" CXXFLAGS="-march=core2 -O3 -ggdb -pipe" DISTDIR="/var/cache/distfiles" EMERGE_DEFAULT_OPTS="--nospinner --unordered-display --verbose-conflicts --autounmask=n --backtrack=100 --usepkg --load-average=8" 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="-O2 -pipe" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live ccache compressdebug config-protect-if-modified distcc distlocks ebuild-locks fixlafiles ipc-sandbox merge-wait multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox sfperms splitdebug strict strict-keepdir unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync warn-on-large-env" FFLAGS="-O2 -pipe" GENTOO_MIRRORS=" http://mirror.leaseweb.com/gentoo/ http://mirrors.rit.edu/gentoo/ http://mirror.csclub.uwaterloo.ca/gentoo-distfiles/ " INSTALL_MASK="/etc/grub.d /etc/pm /etc/systemd /lib/systemd /usr/lib/systemd/system /usr/lib/sysusers.d /etc/xinetd.d /usr/share/bash-completion /usr/share/fish /usr/share/zsh /usr/share/cmake/Help /usr/share/gtk-doc /usr/share/locale/*/ -/usr/share/locale/en -/usr/share/locale/en_US" LANG="en_US.UTF-8" LDFLAGS="-Wl,-O2 -Wl,--as-needed" LEX="flex" LINGUAS="en_US en" MAKEOPTS="-j32 -l12" PKGDIR="/var/cache/binpkgs" PORTAGE_COMPRESS="xz" 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 --exclude=/CACHEDIR.TAG" PORTAGE_TMPDIR="/var/tmp" SHELL="/bin/bash" USE="X a52 aac acpi alsa amd64 branding bzip2 cairo cdda cdparanoia cdr crypt cups curl dbus declarative dri dts dvd dvdr elogind encode evdev exif ffmpeg flac fontconfig gif git gmp gtk gui iconv icu id3tag ipv6 jpeg kde kf6compat kwallet lame lcms libnotify libsamplerate libtirpc lzma mad matroska mng mp3 mp4 mpeg multilib ncurses networkmanager ogg opengl opus pam pango pcre pdf php plasma png policykit postgres ppds qml qt5 quicktime readline sctp sdl seccomp smp sound spell ssl startup-notification subversion svg taglib tcmalloc test-rust theora threads tiff truetype udev udisks unicode upower usb v4l vaapi vdpau vnc vorbis vpx vulkan wayland webkit webp widgets x264 xcb xft xml xv xvid xvmc zlib zstd" ABI_X86="64" ADA_TARGET="gcc_12" ALSA_CARDS="hda-intel" 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="mmx mmxext sse sse2 sse3 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax mtk3301 ntrip navcom oceanserver oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 tsip tripmate tnt ublox" GUILE_SINGLE_TARGET="3-0" GUILE_TARGETS="3-0" INPUT_DEVICES="evdev libinput" KERNEL="linux" L10N="en-US en" LCD_DEVICES="bayrad cfontz glk hd44780 lb216 lcdm001 mtxorb text" LLVM_TARGETS="AMDGPU" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-2" POSTGRES_TARGETS="postgres15" PYTHON_SINGLE_TARGET="python3_12" PYTHON_TARGETS="python3_12" QEMU_SOFTMMU_TARGETS="arm" RUBY_TARGETS="ruby31 ruby32" SANE_BACKENDS="genesys" VIDEO_CARDS="amdgpu radeonsi" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, LC_ALL, LD, LFLAGS, LIBTOOL, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS ================================================================= Package Settings ================================================================= sys-fs/xfsprogs-6.10.0::gentoo was built with the following: USE="icu -libedit -nls (-selinux) -static-libs" ABI_X86="(64)" CFLAGS="-pipe -march=core2 -O2 -ggdb" CXXFLAGS="-pipe -march=core2 -O2 -ggdb"
Making this change allows net-libs/libktorrent-24.08.0 to build successfully: --- /usr/include/xfs/xfs_fs.h +++ /usr/include/xfs/xfs_fs.h @@ -912,7 +912,7 @@ if (next >= end) return NULL; - return next; + return (struct xfs_getparents_rec *)next; } /* Iterate through this file handle's directory parent pointers. */
Reported upstream: https://bugzilla.kernel.org/show_bug.cgi?id=219203
Oh, I'd just reported it upstream because of you but just saw https://bugzilla.kernel.org/show_bug.cgi?id=219203. Oops.
This also, interestingly, exposes automagic use in libktorrent.
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=56527dba237030fc69ac2bb4c6725a5ac58a7e16 commit 56527dba237030fc69ac2bb4c6725a5ac58a7e16 Author: Sam James <sam@gentoo.org> AuthorDate: 2024-08-27 23:42:38 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2024-08-27 23:43:47 +0000 sys-fs/xfsprogs: fix C++ compat in headers Closes: https://bugs.gentoo.org/938569 Thanks-to: Matt Whitlock <gentoo@mattwhitlock.name> Signed-off-by: Sam James <sam@gentoo.org> .../xfsprogs/files/xfsprogs-6.10.0-c++-void.patch | 46 ++++++++++++++++++++++ ...-6.10.0-r1.ebuild => xfsprogs-6.10.0-r2.ebuild} | 4 ++ 2 files changed, 50 insertions(+)
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=e5a25a74515446fa910869bd2834bf513341fc44 commit e5a25a74515446fa910869bd2834bf513341fc44 Author: Sam James <sam@gentoo.org> AuthorDate: 2024-09-17 16:44:20 +0000 Commit: Sam James <sam@gentoo.org> CommitDate: 2024-09-17 16:44:24 +0000 sys-fs/xfsprogs: add 6.10.1 It's equivalent to 6.10.0-r2. Bug: https://bugs.gentoo.org/938569 Signed-off-by: Sam James <sam@gentoo.org> sys-fs/xfsprogs/Manifest | 1 + sys-fs/xfsprogs/xfsprogs-6.10.1.ebuild | 110 +++++++++++++++++++++++++++++++++ 2 files changed, 111 insertions(+)
