https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87485
--- Comment #3 from Arseny Solokha <asolokha at gmx dot com> --- % x86_64-pc-linux-gnu-gcc-9.0.0-alpha20180930 -O2 -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra -w -c wo2ahro9.c --verbose Using built-in specs. COLLECT_GCC=x86_64-pc-linux-gnu-gcc-9.0.0-alpha20180930 Target: x86_64-pc-linux-gnu Configured with: /var/tmp/portage/sys-devel/gcc-9.0.0_alpha20180930/work/gcc-9-20180930/configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/9.0.0-alpha20180930 --includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20180930/include --datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20180930 --mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20180930/man --infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20180930/info --with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20180930/include/g++-v9 --with-python-dir=/share/gcc-data/x86_64-pc-linux-gnu/9.0.0-alpha20180930/python --enable-languages=c,c++ --enable-obsolete --enable-secureplt --disable-werror --with-system-zlib --disable-nls --enable-checking=yes --disable-esp --enable-libstdcxx-time --disable-libstdcxx-pch --enable-shared --enable-threads=posix --enable-__cxa_atexit --enable-clocale=gnu --disable-multilib --with-multilib-list=m64 --disable-altivec --disable-fixed-point --enable-targets=all --enable-libgomp --disable-libmudflap --disable-libssp --disable-libmpx --disable-systemtap --disable-vtable-verify --disable-libvtv --disable-libquadmath --enable-lto --with-isl --disable-isl-version-check --disable-libsanitizer --enable-default-pie --enable-default-ssp Thread model: posix gcc version 9.0.0-alpha20180930 20180930 (experimental) (GCC) COLLECT_GCC_OPTIONS='-O2' '-fschedule-insns' '-fno-guess-branch-probability' '-fno-isolate-erroneous-paths-dereference' '-fno-omit-frame-pointer' '-fno-split-wide-types' '-fno-tree-ccp' '-fno-tree-sra' '-w' '-c' '-v' '-mtune=generic' '-march=x86-64' /usr/libexec/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20180930/cc1 -quiet -v wo2ahro9.c -quiet -dumpbase wo2ahro9.c -mtune=generic -march=x86-64 -auxbase wo2ahro9 -O2 -w -version -fschedule-insns -fno-guess-branch-probability -fno-isolate-erroneous-paths-dereference -fno-omit-frame-pointer -fno-split-wide-types -fno-tree-ccp -fno-tree-sra -o /tmp/ccMuyRPu.s GNU C17 (GCC) version 9.0.0-alpha20180930 20180930 (experimental) (x86_64-pc-linux-gnu) compiled by GNU C version 9.0.0-alpha20180930 20180930 (experimental), GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.20-GMP GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 ignoring nonexistent directory "/usr/local/include" ignoring nonexistent directory "/usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20180930/../../../../x86_64-pc-linux-gnu/include" #include "..." search starts here: #include <...> search starts here: /usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20180930/include /usr/lib/gcc/x86_64-pc-linux-gnu/9.0.0-alpha20180930/include-fixed /usr/include End of search list. GNU C17 (GCC) version 9.0.0-alpha20180930 20180930 (experimental) (x86_64-pc-linux-gnu) compiled by GNU C version 9.0.0-alpha20180930 20180930 (experimental), GMP version 6.1.2, MPFR version 4.0.1, MPC version 1.1.0, isl version isl-0.20-GMP GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096 Compiler executable checksum: 7ddb5283a960f24fa6ae96c9b977a55b