https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100751
--- Comment #15 from Martin Liška <marxin at gcc dot gnu.org> --- > I'm trying to now when would __gcov_reset help us in seeing the counter > values reset to ##### instead of old data(numbers like 4,1,3, etc in .c.gcov > file). Note that .gcda profiles are always merged after a program finishes. __gcov_reset resets only run-time profile (counters collected so far during a run), so merging happens anyway. If you want to reset a .gcda file, then remove it.