[Bug fortran/93794] New: [8/9/10 Regression] ICE in gfc_conv_component_ref, at fortran/trans-expr.c:2497

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93794

            Bug ID: 93794
           Summary: [8/9/10 Regression] ICE in gfc_conv_component_ref, at
                    fortran/trans-expr.c:2497
           Product: gcc
           Version: 10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gscfq@t-online.de
  Target Milestone: ---

Started to ICE with gfortran-8 :


$ cat z1.f90
program p
   type t
      character(:), pointer :: a
   end type
   type(t) :: z
   associate (y => z%a)
      print *, y
   end associate
end


$ gfortran-7 -c z1.f90
$
$ gfortran-10-20200216 -c z1.f90
z1.f90:7:0:

    7 |       print *, y
      |
internal compiler error: in gfc_conv_component_ref, at
fortran/trans-expr.c:2497
0x724d47 gfc_conv_component_ref(gfc_se*, gfc_ref*)
        ../../gcc/fortran/trans-expr.c:2497
0x72bfc7 gfc_conv_variable
        ../../gcc/fortran/trans-expr.c:2837
0x72839a gfc_conv_expr(gfc_se*, gfc_expr*)
        ../../gcc/fortran/trans-expr.c:8673
0x764cf7 trans_associate_var
        ../../gcc/fortran/trans-stmt.c:2073
0x76b891 gfc_trans_block_construct(gfc_code*)
        ../../gcc/fortran/trans-stmt.c:2283
0x6f7bd7 trans_code
        ../../gcc/fortran/trans.c:1960
0x7210a4 gfc_generate_function_code(gfc_namespace*)
        ../../gcc/fortran/trans-decl.c:6835
0x6a9ec6 translate_all_program_units
        ../../gcc/fortran/parse.c:6306
0x6a9ec6 gfc_parse_file()
        ../../gcc/fortran/parse.c:6545
0x6f44ff gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:210