[Bug fortran/101084] New: [10/11/12 Regression] ICE in gfc_typenode_for_spec, at fortran/trans-types.c:1124

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101084

            Bug ID: 101084
           Summary: [10/11/12 Regression] ICE in gfc_typenode_for_spec, at
                    fortran/trans-types.c:1124
           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: ---

Changed between 20191215 and 20200105 :


$ cat z1.f90
program p
   integer, parameter :: a(0) = 1
   print int(a)
end


$ gfortran-10-20191215 -c z1.f90
z1.f90:3:8:

    3 |    print int(a)
      |        1
Error: Constant expression in FORMAT tag at (1) must be of type default
CHARACTER


$ gfortran-12-20210613 -c z1.f90
z1.f90:3:8:

    3 |    print int(a)
      |        1
Warning: Legacy Extension: Non-character in FORMAT tag at (1)
z1.f90:3:15:

    3 |    print int(a)
      |               1
internal compiler error: in gfc_typenode_for_spec, at
fortran/trans-types.c:1124
0x822a30 gfc_typenode_for_spec(gfc_typespec*, int)
        ../../gcc/fortran/trans-types.c:1124
0x7ada4c gfc_conv_expr_descriptor(gfc_se*, gfc_expr*)
        ../../gcc/fortran/trans-array.c:7544
0x7b46cb gfc_conv_array_parameter(gfc_se*, gfc_expr*, bool, gfc_symbol const*,
char const*, tree_node**)
        ../../gcc/fortran/trans-array.c:8110
0x7fa20c gfc_convert_array_to_string
        ../../gcc/fortran/trans-io.c:788
0x7fa20c set_string
        ../../gcc/fortran/trans-io.c:848
0x7fc1be build_dt
        ../../gcc/fortran/trans-io.c:1941
0x79fb37 trans_code
        ../../gcc/fortran/trans.c:2110
0x7c6054 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6893
0x74c876 translate_all_program_units
        ../../gcc/fortran/parse.c:6461
0x74c876 gfc_parse_file()
        ../../gcc/fortran/parse.c:6730
0x798bbf gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:212