https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80911
--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> --- When run from command line: ... nobootstrap/build/gcc/gcov gcov-1.c gcov-1.gcno:corrupted gcov-1.gcda:profile mismatch for 'main' Segmentation fault ...