https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85655
Bug ID: 85655 Summary: ICE with -flto and -O2 during IPA pass: cp lto1: internal compiler error: Segmentation fault Product: gcc Version: 8.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: steffen at hauihau dot de Target Milestone: --- Created attachment 44072 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44072&action=edit reduced testcase Attached testcase (derived from MariaDB 10.3.6 sql/sys_vars.cc) produces an ICE with segmenatation fault. -flto with at least -O2 is needed to trigger the ICE. schlepptop ~ # g++ -flto -O2 /tmp/sys_vars.ii during IPA pass: cp lto1: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <https://bugs.gentoo.org/> for instructions. lto-wrapper: fatal error: /usr/x86_64-pc-linux-gnu/gcc-bin/8.1.0/g++ returned 1 exit status compilation terminated. /usr/lib/gcc/x86_64-pc-linux-gnu/8.1.0/../../../../x86_64-pc-linux-gnu/bin/ld: fatal error: lto-wrapper failed collect2: error: ld returned 1 exit status schlepptop ~ # g++ -v Using built-in specs. COLLECT_GCC=/usr/x86_64-pc-linux-gnu/gcc-bin/8.1.0/g++ COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/8.1.0/lto-wrapper Target: x86_64-pc-linux-gnu Configured with: /home/gentoo/tmp/portage/sys-devel/gcc-8.1.0/work/gcc-8.1.0/configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/8.1.0 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.1.0/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.1.0 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.1.0/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/8.1.0/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/8.1.0/include/g++-v8 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/8.1.0/python --enable-languages=c,c++,fortran --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --enable-nls --without-included-gettext --enable-checking=release --with-bugurl=https://bugs.gentoo.org/ --with-pkgversion='Gentoo 8.1.0 p1.0' --disable-esp --enable-libstdcxx-time --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --enable-multilib --with-multilib-list=m32,m64 --disable-altivec --disable-fixed-point --enable-targets=all --disable-libgcj --enable-libgomp --disable-libmudflap --disable-libssp --disable-libcilkrts --disable-libmpx --enable-vtable-verify --enable-libvtv --enable-lto --without-isl --enable-libsanitizer --enable-default-pie --enable-default-ssp Thread model: posix gcc version 8.1.0 (Gentoo 8.1.0 p1.0)