https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83065
--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- Even using the affected revision, I'm unable to reproduce that with: OPTIMIZE = -Ofast -funroll-loops -g -march=haswell -fpermissive -fgnu89-inline Can you please provide whole command line that invokes the problematic source file? And please add also --verbose output.