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Subject: [Bug fortran/102686] New: [PDT] ICE in check_host_association, at
 fortran/resolve.c:6055
Date: Mon, 11 Oct 2021 17:07:58 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D102686

            Bug ID: 102686
           Summary: [PDT] ICE in check_host_association, at
                    fortran/resolve.c:6055
           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
module m
   implicit none
contains
   integer function n()
      n =3D 1
   end
   subroutine s
      type t(n)
         integer, len :: n =3D 2
         character(n) :: c
      end type
   end
end


$ cat z2.f90
module m
   implicit none
contains
   subroutine s
      type t(n)
         integer, len :: n =3D 2
         character(n) :: c
      end type
   end
   integer function n()
      n =3D 1
   end
end


$ gfortran-12-20211010 -c z1.f90
f951: internal compiler error: Segmentation fault
0xd43fcf crash_signal
        ../../gcc/toplev.c:326
0x806716 check_host_association
        ../../gcc/fortran/resolve.c:6055
0x806716 gfc_resolve_expr(gfc_expr*)
        ../../gcc/fortran/resolve.c:7114
0x79a244 gfc_reduce_init_expr(gfc_expr*)
        ../../gcc/fortran/expr.c:3125
0x77b972 char_len_param_value
        ../../gcc/fortran/decl.c:1126
0x77e690 gfc_match_char_spec(gfc_typespec*)
        ../../gcc/fortran/decl.c:3553
0x785037 gfc_match_decl_type_spec(gfc_typespec*, int)
        ../../gcc/fortran/decl.c:4294
0x7865dc gfc_match_data_decl()
        ../../gcc/fortran/decl.c:6254
0x7f01d3 match_word
        ../../gcc/fortran/parse.c:65
0x7f01d3 decode_statement
        ../../gcc/fortran/parse.c:376
0x7f1c1a next_free
        ../../gcc/fortran/parse.c:1384
0x7f1c1a next_statement
        ../../gcc/fortran/parse.c:1616
0x7f3774 parse_derived
        ../../gcc/fortran/parse.c:3571
0x7f3774 parse_spec
        ../../gcc/fortran/parse.c:4112
0x7f610c parse_progunit
        ../../gcc/fortran/parse.c:6117
0x7f64f1 parse_contained
        ../../gcc/fortran/parse.c:6018
0x7f73b7 parse_module
        ../../gcc/fortran/parse.c:6391
0x7f76e7 gfc_parse_file()
        ../../gcc/fortran/parse.c:6694
0x84480f gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:216=