[Bug fortran/103505] New: ICE in compare_bound_mpz_t, at fortran/resolve.c:4587

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103505

            Bug ID: 103505
           Summary: ICE in compare_bound_mpz_t, at fortran/resolve.c:4587
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started with r8 :


$ 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-12-20211128 -c z1.f90
f951: internal compiler error: compare_bound_int(): Bad expression
0x7977b9 gfc_report_diagnostic
        ../../gcc/fortran/error.c:874
0x799327 gfc_internal_error(char const*, ...)
        ../../gcc/fortran/error.c:1494
0x807111 compare_bound_mpz_t
        ../../gcc/fortran/resolve.c:4587
0x80765c check_dimension
        ../../gcc/fortran/resolve.c:4770
0x81a51d compare_spec_to_ref
        ../../gcc/fortran/resolve.c:4835
0x81a51d resolve_array_ref
        ../../gcc/fortran/resolve.c:5126
0x81a51d gfc_resolve_ref(gfc_expr*)
        ../../gcc/fortran/resolve.c:5340
0x80a7a7 resolve_variable
        ../../gcc/fortran/resolve.c:5842
0x80a7a7 gfc_resolve_expr(gfc_expr*)
        ../../gcc/fortran/resolve.c:7168
0x79d694 gfc_reduce_init_expr(gfc_expr*)
        ../../gcc/fortran/expr.c:3130
0x7a0560 gfc_match_init_expr(gfc_expr**)
        ../../gcc/fortran/expr.c:3178
0x781265 gfc_match_kind_spec(gfc_typespec*, bool)
        ../../gcc/fortran/decl.c:3241
0x787ae9 gfc_match_decl_type_spec(gfc_typespec*, int)
        ../../gcc/fortran/decl.c:4672
0x78947c gfc_match_data_decl()
        ../../gcc/fortran/decl.c:6226
0x7f49c3 match_word
        ../../gcc/fortran/parse.c:67
0x7f49c3 decode_statement
        ../../gcc/fortran/parse.c:378
0x7f640a next_free
        ../../gcc/fortran/parse.c:1397
0x7f640a next_statement
        ../../gcc/fortran/parse.c:1629
0x7f7b2b parse_spec
        ../../gcc/fortran/parse.c:4168
0x7fae8c parse_progunit
        ../../gcc/fortran/parse.c:6179