[Bug fortran/89103] Allow blank format items in format strings

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89103

--- Comment #10 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
Author: jvdelisle
Date: Wed Jun 19 03:02:21 2019
New Revision: 272467

URL: https://gcc.gnu.org/viewcvs?rev=272467&root=gcc&view=rev
Log:
2019-06-19  Jim MacArthur  <jim.macarthur@codethink.co.uk>
            Mark Eggleston  <mark.eggleston@codethink.com>

        PR fortran/89103
        * gfortran.texi: Add -fdec-blank-format-item
        * invoke.texi: Add option to list of options.
        * invoke.texi: Add to section on Commas in FORMAT specifications.
        * io.c (check_format): At FMT_RPAREN goto finished if
        -fdec-blank-format-item otherwise set error string.
        * lang.opt: Add new option.
        * options.c (set_dec_flags): Add SET_BITFLAG for
        flag_dec_format_defaults.

        * gfortran.dg/dec_format_empty_item_1.f: New test.
        * gfortran.dg/dec_format_empty_item_2.f: New test.
        * gfortran.dg/dec_format_empty_item_3.f: New test.

Added:
    trunk/gcc/testsuite/gfortran.dg/dec_format_empty_item_1.f
    trunk/gcc/testsuite/gfortran.dg/dec_format_empty_item_2.f
    trunk/gcc/testsuite/gfortran.dg/dec_format_empty_item_3.f
Modified:
    trunk/gcc/fortran/ChangeLog
    trunk/gcc/fortran/gfortran.texi
    trunk/gcc/fortran/invoke.texi
    trunk/gcc/fortran/io.c
    trunk/gcc/fortran/lang.opt
    trunk/gcc/fortran/options.c
    trunk/gcc/testsuite/ChangeLog