[Bug fortran/78864] New: ICE in dtio_procs_present, at fortran/resolve.c:13819

["gerhard dot steinmetz dot fortran at t-online dot de" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78864

            Bug ID: 78864
           Summary: ICE in dtio_procs_present, at fortran/resolve.c:13819
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gerhard.steinmetz.fortran@t-online.de
  Target Milestone: ---

Invalid code affects version 7 since about 20160904 :


$ cat z1.f90
program p
   type t
   end type
   class(t) :: x
   namelist /nml/ x
end


$ gfortran-7-20161218 z1.f90
f951: internal compiler error: Segmentation fault
0xc513cf crash_signal
        ../../gcc/toplev.c:333
0x5e256d dtio_procs_present
        ../../gcc/fortran/resolve.c:13819
0x70083b resolve_fl_namelist
        ../../gcc/fortran/resolve.c:13869
0x70083b resolve_symbol
        ../../gcc/fortran/resolve.c:14703
0x71a01b do_traverse_symtree
        ../../gcc/fortran/symbol.c:3986
0x70307a resolve_types
        ../../gcc/fortran/resolve.c:15976
0x6febdc gfc_resolve(gfc_namespace*)
        ../../gcc/fortran/resolve.c:16089
0x6e8eca resolve_all_program_units
        ../../gcc/fortran/parse.c:5947
0x6e8eca gfc_parse_file()
        ../../gcc/fortran/parse.c:6194
0x72ced2 gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:202