It looks like it will need: https://github.com/gcc-mirror/gcc/commit/ce9568e9e9cf6094be30e748821421e703754ffc.patch https://github.com/gcc-mirror/gcc/commit/75003cdd23c310ec385344e8040d490e8dd6d2be.patch Which I've squashed down to the attached patch Reproducible: Always
Created attachment 611774 [details] build.log
Created attachment 611776 [details, diff] glibc 2.31 fix
/bin/bash ../libtool --tag=CXX --mode=compile /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/build/./gcc/xgcc -shared-libgcc -B/var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/build/./gcc -nostdinc++ -L/var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src -L/var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/build/x86_64-pc-linux-gnu/libstdc++-v3/src/.libs -L/var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/build/x86_64-pc-linux-gnu/libstdc++-v3/libsupc++/.libs -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include -fchecking=1 -D_GNU_SOURCE -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -DHAVE_RPC_XDR_H=0 -DHAVE_TIRPC_RPC_XDR_H=0 -I. -I/var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common -I.. -I /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/include -isystem /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/include/system -Wall -W -Wno-unused-parameter -Wwrite-strings -pedantic -Wno-long-long -fPIC -fno-builtin -fno-exceptions -fno-rtti -fomit-frame-pointer -funwind-tables -fvisibility=hidden -Wno-variadic-macros -I../../libstdc++-v3/include -I../../libstdc++-v3/include/x86_64-pc-linux-gnu -I/var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/../libstdc++-v3/libsupc++ -std=gnu++11 -DSANITIZER_LIBBACKTRACE -DSANITIZER_CP_DEMANGLE -I /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/../libbacktrace -I ../libbacktrace -I /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/../include -include /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/libbacktrace/backtrace-rename.h -g -march=native -pipe -O2 -D_GNU_SOURCE -MT sanitizer_procmaps_common.lo -MD -MP -MF .deps/sanitizer_procmaps_common.Tpo -c -o sanitizer_procmaps_common.lo /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_procmaps_common.cc In file included from /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:193: /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:339:72: error: narrowing conversion of ‘-1’ from ‘int’ to ‘long unsigned int’ [-Wnarrowing] 339 | typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1] | ^ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:333:30: note: in expansion of macro ‘IMPL_COMPILER_ASSERT’ 333 | #define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__) | ^~~~~~~~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h:1511:3: note: in expansion of macro ‘COMPILER_CHECK’ 1511 | COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \ | ^~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:1161:1: note: in expansion of macro ‘CHECK_SIZE_AND_OFFSET’ 1161 | CHECK_SIZE_AND_OFFSET(ipc_perm, mode); | ^~~~~~~~~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:339:70: warning: size of array ‘assertion_failed__1161’ is not an integral constant-expression [-Wpedantic] 339 | typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1] | ~~~~~~~~~~~~~^~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:333:30: note: in expansion of macro ‘IMPL_COMPILER_ASSERT’ 333 | #define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__) | ^~~~~~~~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h:1511:3: note: in expansion of macro ‘COMPILER_CHECK’ 1511 | COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \ | ^~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:1161:1: note: in expansion of macro ‘CHECK_SIZE_AND_OFFSET’ 1161 | CHECK_SIZE_AND_OFFSET(ipc_perm, mode); | ^~~~~~~~~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:339:70: error: size ‘-1’ of array ‘assertion_failed__1161’ is negative 339 | typedef char IMPL_PASTE(assertion_failed_##_, line)[2*(int)(pred)-1] | ~~~~~~~~~~~~~^~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_internal_defs.h:333:30: note: in expansion of macro ‘IMPL_COMPILER_ASSERT’ 333 | #define COMPILER_CHECK(pred) IMPL_COMPILER_ASSERT(pred, __LINE__) | ^~~~~~~~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.h:1511:3: note: in expansion of macro ‘COMPILER_CHECK’ 1511 | COMPILER_CHECK(sizeof(((__sanitizer_##CLASS *) NULL)->MEMBER) == \ | ^~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_platform_limits_posix.cc:1161:1: note: in expansion of macro ‘CHECK_SIZE_AND_OFFSET’ 1161 | CHECK_SIZE_AND_OFFSET(ipc_perm, mode); | ^~~~~~~~~~~~~~~~~~~~~ /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_posix.cc: In function ‘__sanitizer::fd_t __sanitizer::OpenFile(const char*, __sanitizer::FileAccessMode, __sanitizer::error_t*)’: /var/tmp/portage/sys-devel/gcc-9.2.0-r3/work/gcc-9.2.0/libsanitizer/sanitizer_common/sanitizer_posix.cc:164:27: warning: ‘flags’ may be used uninitialized in this function [-Wmaybe-uninitialized] 164 | fd_t res = internal_open(filename, flags, 0660); | ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
The bug has been referenced in the following commit(s): https://gitweb.gentoo.org/proj/gcc-patches.git/commit/?id=7d1022a04284035ab567d85e356e14e06aab121d commit 7d1022a04284035ab567d85e356e14e06aab121d Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2020-02-06 22:19:38 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2020-02-06 22:19:38 +0000 9.2.0: backport libsanitizer tweaks for glibc-2.31 Reported-by: Mike Lothian Bug: https://bugs.gentoo.org/708346 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> .../gentoo/35_all_glibc-2.31-libsanitizer-1.patch | 40 ++++++++++++ .../gentoo/36_all_glibc-2.31-libsanitizer-2.patch | 76 ++++++++++++++++++++++ 9.2.0/gentoo/README.history | 2 + 3 files changed, 118 insertions(+)
Thank you for the links! I assume you have tested these patches against 9.2.0 and it was enough for your system. gcc patchset will be cun in a few weeks. Meanwhile for those who would like to run glibc-2.31 now you can drop the patches into /etc/portage/patches/sys-devel/gcc:9.2.0/.
Yeah I'm running it here and it's working well
*** Bug 709634 has been marked as a duplicate of this bug. ***
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=c059facbe9af77c4f8a8c783a826e4d47ea1b267 commit c059facbe9af77c4f8a8c783a826e4d47ea1b267 Author: Sergei Trofimovich <slyfox@gentoo.org> AuthorDate: 2020-02-15 20:10:06 +0000 Commit: Sergei Trofimovich <slyfox@gentoo.org> CommitDate: 2020-02-15 20:13:40 +0000 sys-devel/gcc: 9.2.0: cut 5 patchset Three new patches: + 34_all_ia64-neg-insn-cost.patch: fix lz4 code generation on ia64 + 35_all_glibc-2.31-libsanitizer-{1,2}.patch: fix build against glibc-2.31 Closes: https://bugs.gentoo.org/707958 Bug: https://gcc.gnu.org/PR88879 Closes: https://bugs.gentoo.org/708346 Package-Manager: Portage-2.3.88, Repoman-2.3.20 Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org> sys-devel/gcc/Manifest | 1 + sys-devel/gcc/gcc-9.2.0-r4.ebuild | 21 +++++++++++++++++++++ 2 files changed, 22 insertions(+)
