[Bug fortran/103590] New: ICE: find_array_spec(): Missing spec

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103590

            Bug ID: 103590
           Summary: ICE: find_array_spec(): Missing spec
           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: ---

Affects versions down to at least r5 :


$ cat z1.f90
program p
   associate (a => 1)
      print *, [character(a(1)) :: '1']
   end associate
end


$ cat z2.f90
program p
   character :: b(1)
   associate (a => 1)
      b = [character(a(1)) :: '1']
   end associate
end


$ gfortran-12-20211205 -c z1.f90
f951: internal compiler error: find_array_spec(): Missing spec
0x799179 gfc_report_diagnostic
        ../../gcc/fortran/error.c:874
0x79ace7 gfc_internal_error(char const*, ...)
        ../../gcc/fortran/error.c:1494
0x81c09f find_array_spec
        ../../gcc/fortran/resolve.c:4989
0x81c09f gfc_resolve_ref(gfc_expr*)
        ../../gcc/fortran/resolve.c:5331
0x80c167 resolve_variable
        ../../gcc/fortran/resolve.c:5842
0x80c167 gfc_resolve_expr(gfc_expr*)
        ../../gcc/fortran/resolve.c:7168
0x79f054 gfc_reduce_init_expr(gfc_expr*)
        ../../gcc/fortran/expr.c:3155
0x780562 char_len_param_value
        ../../gcc/fortran/decl.c:1129
0x7830b0 gfc_match_char_spec(gfc_typespec*)
        ../../gcc/fortran/decl.c:3541
0x7cd8c3 gfc_match_type_spec(gfc_typespec*)
        ../../gcc/fortran/match.c:2144
0x767b10 gfc_match_array_constructor(gfc_expr**)
        ../../gcc/fortran/array.c:1246
0x7d39a9 match_primary
        ../../gcc/fortran/matchexp.c:153
0x7d39a9 match_level_1
        ../../gcc/fortran/matchexp.c:211
0x7d39a9 match_mult_operand
        ../../gcc/fortran/matchexp.c:267
0x7d3c08 match_add_operand
        ../../gcc/fortran/matchexp.c:356
0x7d3e5c match_level_2
        ../../gcc/fortran/matchexp.c:480
0x7d3fb2 match_level_3
        ../../gcc/fortran/matchexp.c:551
0x7d40a4 match_level_4
        ../../gcc/fortran/matchexp.c:599
0x7d40a4 match_and_operand
        ../../gcc/fortran/matchexp.c:693
0x7d4292 match_or_operand
        ../../gcc/fortran/matchexp.c:722