[Bug fortran/108527] New: [13 Regression] ICE in compare_bound_int(): Bad expression

["gscfq@t-online.de" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108527

            Bug ID: 108527
           Summary: [13 Regression] ICE in compare_bound_int(): Bad
                    expression
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started between 20221218 and 20230108,
was fixed, but testcases from pr103505 give an ICE again :


$ cat z1.f90
program p
   integer, parameter :: a((2.)) = [4, 8]
   integer(a(1:1)) :: b
end


$ cat z2.f90
program p
   integer, parameter :: a((2.)) = [4, 8]
   print *, [integer(a(1:1)) :: 2]
end


$ cat z3.f90
program p
   integer, parameter :: a((2.)) = [4, 8]
   integer :: b(a(1:1))
end


$ gfortran-13-20230122 -c z1.f90
f951: internal compiler error: compare_bound_int(): Bad expression
0x7c17e9 gfc_report_diagnostic
        ../../gcc/fortran/error.cc:883
0x7c3387 gfc_internal_error(char const*, ...)
        ../../gcc/fortran/error.cc:1503
0x834531 compare_bound_mpz_t
        ../../gcc/fortran/resolve.cc:4605
0x834a7c check_dimension
        ../../gcc/fortran/resolve.cc:4788
0x847ddd compare_spec_to_ref
        ../../gcc/fortran/resolve.cc:4853
0x847ddd resolve_array_ref
        ../../gcc/fortran/resolve.cc:5151
0x847ddd gfc_resolve_ref(gfc_expr*)
        ../../gcc/fortran/resolve.cc:5366
0x837bc7 resolve_variable
        ../../gcc/fortran/resolve.cc:5871
0x837bc7 gfc_resolve_expr(gfc_expr*)
        ../../gcc/fortran/resolve.cc:7197
0x7c77a4 gfc_reduce_init_expr(gfc_expr*)
        ../../gcc/fortran/expr.cc:3168
0x7ca700 gfc_match_init_expr(gfc_expr**)
        ../../gcc/fortran/expr.cc:3216
0x7aa94a gfc_match_kind_spec(gfc_typespec*, bool)
        ../../gcc/fortran/decl.cc:3273
0x7b12e9 gfc_match_decl_type_spec(gfc_typespec*, int)
        ../../gcc/fortran/decl.cc:4706
0x7b2cac gfc_match_data_decl()
        ../../gcc/fortran/decl.cc:6264
0x8215d3 match_word
        ../../gcc/fortran/parse.cc:67
0x8215d3 decode_statement
        ../../gcc/fortran/parse.cc:378
0x82301a next_free
        ../../gcc/fortran/parse.cc:1403
0x82301a next_statement
        ../../gcc/fortran/parse.cc:1635
0x824a5b parse_spec
        ../../gcc/fortran/parse.cc:4191
0x827d5c parse_progunit
        ../../gcc/fortran/parse.cc:6262