https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80911
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Last reconfirmed| |2017-05-29 Ever confirmed|0 |1 --- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> --- Can't confirm that, running trunk@248556 works fine for me. Utilizing valgrind also does not help. Can you please run a single test manually: $ gcc --coverage gcov-1.c $ ./a.out $ gcov gcov-1.c And you can also test: $ gcov-dump gcov-1.gcno