https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79916
--- Comment #5 from Martin Liška <marxin at gcc dot gnu.org> --- That's strange, cc1plus command line has nothing special as I can see: $ /home/marxin/BIG/buildbot/slave/install/gcc-dda535fd9490e3e8f31bacc6678e0c734ff59212/bin/../lib/gcc/ppc64le-linux-gnu/7.0.1/cc1plus -quiet -v -iprefix /home/marxin/BIG/buildbot/slave/install/gcc-dda535fd9490e3e8f31bacc6678e0c734ff59212/bin/../lib64/gcc/ppc64le-linux-gnu/7.0.1/ -D_GNU_SOURCE -D__unix__ -D__gnu_linux__ -D__linux__ -Dunix -D__unix -Dlinux -D__linux -Asystem=linux -Asystem=unix -Asystem=posix /home/marxin/Programming/gcc/gcc/testsuite/g++.dg/compat/decimal/return-6_x.C -quiet -dumpbase return-6_x.C -mno-popcntd -auxbase return-6_x -Og -version -o /tmp/ccsVo0KI.s