https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61819
--- Comment #21 from Dominique d'Humieres <dominiq at lps dot ens.fr> --- > I just submitted a new bug. It is a pity that my code cannot be compiled > with gfortran 4.9 and above for more than a year now.. (Part of) your code should compile with the 5.3.0 release.