I've tried to build 4.19.23 kernel with recently installed gcc 8.2.0 on my old PPC32 machine. It stopped as such: CC arch/powerpc/kernel/cputable.o CC arch/powerpc/kernel/ptrace.o In file included from arch/powerpc/kernel/ptrace.c:24: In function 'user_regset_copyin', inlined from 'vr_set' at arch/powerpc/kernel/ptrace.c:619:9: ./include/linux/regset.h:295:4: error: 'memcpy' offset [-527, -529] is out of the bounds [0, 16] of object 'vrsave' with type 'union <anonymous>' [-Werror=array-bounds] memcpy(data, *kbuf, copy); ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/powerpc/kernel/ptrace.c: In function 'vr_set': arch/powerpc/kernel/ptrace.c:614:5: note: 'vrsave' declared here } vrsave; ^~~~~~ cc1: all warnings being treated as errors Reproducible: Always Steps to Reproduce: 1. emerge gentoo-sources 2. configure kernel sources 3. run 'make' Actual Results: Failure as in description Expected Results: Fully compiled kernel binary Portage 2.3.51 (python 2.7.15-final-0, default/linux/powerpc/ppc32/17.0, gcc-8.2.0, glibc-2.27-r6, 4.14.83-gentoo ppc) ================================================================= System uname: Linux-4.14.83-gentoo-ppc-7447A,_altivec_supported-with-gentoo-2.6 KiB Mem: 1023348 total, 320672 free KiB Swap: 1048572 total, 515836 free Timestamp of repository gentoo: Sun, 03 Mar 2019 09:00:01 +0000 Head commit of repository gentoo: 86ea906cba9325037fdc3d6daee8726c1752f4d0 sh bash 4.4_p23-r1 ld GNU ld (Gentoo 2.30 p5) 2.30.0 app-shells/bash: 4.4_p23-r1::gentoo dev-lang/perl: 5.26.2::gentoo dev-lang/python: 2.7.15::gentoo, 3.4.8::gentoo, 3.5.5::gentoo, 3.6.5::gentoo dev-util/cmake: 3.9.6::gentoo dev-util/pkgconfig: 0.29.2::gentoo sys-apps/baselayout: 2.6-r1::gentoo sys-apps/openrc: 0.38.3-r1::gentoo sys-apps/sandbox: 2.13::gentoo sys-devel/autoconf: 2.13-r1::gentoo, 2.69-r4::gentoo sys-devel/automake: 1.8.5-r4::gentoo, 1.10.3::gentoo, 1.11.6-r2::gentoo, 1.12.6::gentoo, 1.13.4-r2::gentoo, 1.14.1::gentoo, 1.15.1-r2::gentoo, 1.16.1-r1::gentoo sys-devel/binutils: 2.30-r4::gentoo sys-devel/gcc: 4.9.4::gentoo, 6.4.0-r1::gentoo, 7.3.0-r3::gentoo, 8.2.0-r6::gentoo sys-devel/gcc-config: 2.0::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1-r4::gentoo sys-kernel/linux-headers: 4.14-r1::gentoo (virtual/os-headers) sys-libs/glibc: 2.27-r6::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: --bwlimit=100 sync-rsync-verify-max-age: 24 x-portage location: /usr/local/portage masters: gentoo priority: 0 ACCEPT_KEYWORDS="ppc" ACCEPT_LICENSE="*" CBUILD="powerpc-unknown-linux-gnu" CFLAGS="-O2 -mcpu=powerpc -mtune=powerpc -fno-strict-aliasing -fomit-frame-pointer -pipe" CHOST="powerpc-unknown-linux-gnu" CONFIG_PROTECT="/etc /etc/stunnel/stunnel.conf /usr/share/easy-rsa /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-php7.2/ext-active/ /etc/php/cgi-php7.2/ext-active/ /etc/php/cli-php7.2/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -mcpu=powerpc -mtune=powerpc -fno-strict-aliasing -fomit-frame-pointer -pipe" DISTDIR="/usr/portage/distfiles" ENV_UNSET="DBUS_SESSION_BUS_ADDRESS DISPLAY GOBIN 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-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync multilib-strict news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="pl_PL" LDFLAGS="-Wl,-O1 -Wl,--as-needed" LINGUAS="pl" MAKEOPTS="-j1" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_EXTRA_OPTS="--bwlimit=100" 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"
*** This bug has been marked as a duplicate of bug 679430 ***
