https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107681

            Bug ID: 107681
           Summary: [13 Regression] ICE in gfc_type_is_extensible, at
                    fortran/resolve.cc:9018
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Started between 20220717 and 20220724 :
(gcc configured with --enable-checking=yes)


$ cat z1.f90
program p
   type t
      integer, allocatable :: a
   end type
   class(t) :: x[*]
   associate (y => x)
   end associate
end


$ cat z2.f90
program p
   type t
      integer, allocatable :: a
   end type
   class(t) :: x[:]
   associate (y => x)
   end associate
end


$ gfortran-12 -c z1.f90 -fcoarray=lib
z1.f90:5:19:

    5 |    class(t) :: x[*]
      |                   1
Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer


$ gfortran-13-20221106 -c z1.f90 -fcoarray=lib
z1.f90:5:19:

    5 |    class(t) :: x[*]
      |                   1
Error: CLASS variable 'x' at (1) must be dummy, allocatable or pointer
z1.f90:6:20:

    6 |    associate (y => x)
      |                    1
Error: Invalid array reference of a non-array entity at (1)
f951: internal compiler error: Segmentation fault
0xf4697f crash_signal
        ../../gcc/toplev.cc:314
0x6b337f gfc_type_is_extensible(gfc_symbol*)
        ../../gcc/fortran/resolve.cc:9018
0x6b337f resolve_fl_var_and_proc
        ../../gcc/fortran/resolve.cc:12970
0x87c32d resolve_fl_variable
        ../../gcc/fortran/resolve.cc:13089
0x87c32d resolve_symbol
        ../../gcc/fortran/resolve.cc:16183
0x89ad62 do_traverse_symtree
        ../../gcc/fortran/symbol.cc:4180
0x87efd4 resolve_types
        ../../gcc/fortran/resolve.cc:17542
0x87a43c gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.cc:17657
0x87840c gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.cc:17644
0x87840c resolve_block_construct
        ../../gcc/fortran/resolve.cc:10825
0x87840c gfc_resolve_code(gfc_code*, gfc_namespace*)
        ../../gcc/fortran/resolve.cc:12258
0x87a387 resolve_codes
        ../../gcc/fortran/resolve.cc:17624
0x87a44e gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.cc:17659
0x862214 resolve_all_program_units
        ../../gcc/fortran/parse.cc:6631
0x862214 gfc_parse_file()
        ../../gcc/fortran/parse.cc:6887
0x8b0c8f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.cc:229

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