[Bug gcov-profile/78792] gfortran + gcov confused by #line directive

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78792

--- Comment #2 from Martin Liška <marxin at gcc dot gnu.org> ---
I'm unable to feed Fortran FE with a pre-processed file:
https://gcc.gnu.org/ml/fortran/2017-04/msg00072.html