[Bug fortran/51815] confusing substring syntax with array section for character coarray

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=51815

--- Comment #4 from GCC Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Andre Vehreschild <ve...@gcc.gnu.org>:

https://gcc.gnu.org/g:0ad2c76bea20dbeac753f10df6f9f86d142348d4

commit r15-4171-g0ad2c76bea20dbeac753f10df6f9f86d142348d4
Author: Andre Vehreschild <ve...@gcc.gnu.org>
Date:   Tue Oct 1 09:30:59 2024 +0200

    Fix parsing of substring refs in coarrays. [PR51815]

    The parser was greadily taking the substring ref as an array ref because
    an array_spec was present.  Fix this by only parsing the coarray (pseudo)
    ref when no regular array is present.

    gcc/fortran/ChangeLog:

            PR fortran/51815

            * array.cc (gfc_match_array_ref): Only parse coarray part of
            ref.
            * match.h (gfc_match_array_ref): Add flag.
            * primary.cc (gfc_match_varspec): Request only coarray ref
            parsing when no regular array is present.  Report error on
            unexpected additional ref.

    gcc/testsuite/ChangeLog:

            * gfortran.dg/pr102532.f90: Fix dg-errors: Add new error.
            * gfortran.dg/coarray/substring_1.f90: New test.