https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79891
--- Comment #7 from rguenther at suse dot de <rguenther at suse dot de> --- On Fri, 10 Mar 2017, marxin at gcc dot gnu.org wrote: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79891 > > --- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> --- > Yes, the merged is the issue, but looks it's created at the very beginning: No, the merged block isn't the issue, the issue is in coverage computation (or where it associates the bogus source line to the BB).