https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119856
--- Comment #8 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> --- (In reply to Walter Spector from comment #7) > Confirmed that the compiler now diagnoses the missing commas. Thanks! > After taking out the iostat so I could see the error message I am getting the following here: $ gfc -std=f95 test.f90 $ ./a.out At line 7 of file newby.f90 (unit = 6, file = 'stdout') Fortran runtime error: Missing comma between descriptors (AI5) ^ $ gfc -std=legacy test.f90 $ ./a.out value = 42 value = 43 Maybe you are linking in the wrong libgfortran. Set LD_LIBRARY_PATH to point to the correct place.