https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84389
--- Comment #2 from Vipul Parekh <fortranfan at outlook dot com> --- Thank for your response. Per section 1.4.1 in 10-007r1 toward Fortran 2008 on syntax rules toward the BNF convention in the document, line 16 says [] encloses an optional item. R1303 format-items is format-item [ [ , ] format-item ] then suggests the comma in the format item is optional and the format in the first post should work as shown.