[Bug fortran/70864] New: internal compiler error: in gfc_get_symbol_decl, at fortran/trans-decl.c:1403

["weiqun.zhang at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70864

            Bug ID: 70864
           Summary: internal compiler error: in gfc_get_symbol_decl, at
                    fortran/trans-decl.c:1403
           Product: gcc
           Version: 6.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: weiqun.zhang at gmail dot com
  Target Milestone: ---

Created attachment 38371
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38371&action=edit
code demonstrating the problem

Internal compiler error is encountered when compiling the attached code:

$ gfortran -c mymod.f90 
mymod.f90:31:0:

 end module multifab_module

internal compiler error: in gfc_get_symbol_decl, at fortran/trans-decl.c:1403
0x69f0eb gfc_get_symbol_decl(gfc_symbol*)
        ../../../src/gcc-6.1.0/gcc/fortran/trans-decl.c:1403
0x6a13a7 generate_local_decl
        ../../../src/gcc-6.1.0/gcc/fortran/trans-decl.c:5220
0x66a1db do_traverse_symtree
        ../../../src/gcc-6.1.0/gcc/fortran/symbol.c:3817
0x6a1fda generate_local_vars
        ../../../src/gcc-6.1.0/gcc/fortran/trans-decl.c:5410
0x6a1fda gfc_generate_function_code(gfc_namespace*)
        ../../../src/gcc-6.1.0/gcc/fortran/trans-decl.c:6089
0x682281 gfc_generate_module_code(gfc_namespace*)
        ../../../src/gcc-6.1.0/gcc/fortran/trans.c:2058
0x63af8d translate_all_program_units
        ../../../src/gcc-6.1.0/gcc/fortran/parse.c:5600
0x63af8d gfc_parse_file()
        ../../../src/gcc-6.1.0/gcc/fortran/parse.c:5819
0x67c0d5 gfc_be_parse_file
        ../../../src/gcc-6.1.0/gcc/fortran/f95-lang.c:201