[Bug fortran/92976] New: [8/9/10 Regression] ICE in trans_associate_var, at fortran/trans-stmt.c:1963

[gs...@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92976

            Bug ID: 92976
           Summary: [8/9/10 Regression] ICE in trans_associate_var, at
                    fortran/trans-stmt.c:1963
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gs...@t-online.de
  Target Milestone: ---

Started with gfortran-6 :


$ cat z1.f90
program p
   type t
   end type
contains
   subroutine s(x)
      class(t) :: x(2)
      select type (x)
      type is (t)
      end select
   end
end


$ cat z2.f90
program p
   type t
   end type
contains
   subroutine s(x)
      class(*) :: x(2)
      select type (x)
      type is (t)
      end select
   end
end


$ gfortran-5 -c z1.f90
$
$ gfortran-10-20191215 -c z1.f90
z1.f90:1:0:

    1 | program p
      |
internal compiler error: in trans_associate_var, at fortran/trans-stmt.c:1963
0x744404 trans_associate_var
        ../../gcc/fortran/trans-stmt.c:1963
0x74a221 gfc_trans_block_construct(gfc_code*)
        ../../gcc/fortran/trans-stmt.c:2283
0x6d6d37 trans_code
        ../../gcc/fortran/trans.c:1960
0x74b6be gfc_trans_select_type_cases
        ../../gcc/fortran/trans-stmt.c:2913
0x74b6be gfc_trans_select_type(gfc_code*)
        ../../gcc/fortran/trans-stmt.c:3622
0x6d6dc7 trans_code
        ../../gcc/fortran/trans.c:1980
0x74a1af gfc_trans_block_construct(gfc_code*)
        ../../gcc/fortran/trans-stmt.c:2276
0x6d6d37 trans_code
        ../../gcc/fortran/trans.c:1960
0x700124 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6801
0x6fff24 gfc_generate_contained_functions
        ../../gcc/fortran/trans-decl.c:5796
0x6fff24 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6733
0x6891b6 translate_all_program_units
        ../../gcc/fortran/parse.c:6302
0x6891b6 gfc_parse_file()
        ../../gcc/fortran/parse.c:6541
0x6d365f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:210