https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83878
--- Comment #2 from Marco Castelluccio <mcastelluccio at mozilla dot com> --- Created attachment 44267 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44267&action=edit Archive with GCNO, GCDA, source file and GCOV output Sorry for replying late, but I just managed to find a reproducible small test case. g++ --coverage -fno-exceptions -O0 main.cpp ./a.out gcov -u -b -c main.cpp The relevant part is: > function main called 1 returned 100% blocks executed 94% > 1: 24:int main(void) > -: 25:{ > 2: 26: Ciao ciao; > call 0 returned 1 > call 1 returned 1 > unconditional 2 taken 1 > -: 27: > 1: 28: ciao.setName("Marco"); Line 26 is clearly executed once, but gcov shows it as executed twice. The same happens if you have an if block where you call a constructor.
