https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78549
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2016-11-28 CC| |marxin at gcc dot gnu.org Ever confirmed|0 |1 --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> --- You can add another attachments after you submit the bug. I can confirm that it takes (GCC 6.2.1): gfortran -Ofast pr78549.c && time ./a.out ... 0m1.524s gfortran -Ofast pr78549.f90 && time ./a.out ... 0m4.985s