[Bug fortran/78240] New: ICE in match_clist_expr, at fortran/decl.c:728

["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=78240

            Bug ID: 78240
           Summary: ICE in match_clist_expr, at fortran/decl.c:728
           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 with an uninitialized parameter n.
Affects version 6 and 7, needs option -fdec* :


$ cat z1.f90
program p
   structure /s/
      integer x(n) /1/
   end structure
end


$ gfortran-7-20161106 -fdec z1.f90
f951: internal compiler error: in match_clist_expr, at fortran/decl.c:728
0x682abe match_clist_expr
        ../../gcc/fortran/decl.c:728
0x682abe variable_decl
        ../../gcc/fortran/decl.c:2350
0x682abe gfc_match_data_decl()
        ../../gcc/fortran/decl.c:4891
0x6d7b89 match_word_omp_simd
        ../../gcc/fortran/parse.c:93
0x6daa9e match_word
        ../../gcc/fortran/parse.c:377
0x6daa9e decode_statement
        ../../gcc/fortran/parse.c:377
0x6dc8a4 next_free
        ../../gcc/fortran/parse.c:1149
0x6dc8a4 next_statement
        ../../gcc/fortran/parse.c:1382
0x6dd6ca parse_struct_map
        ../../gcc/fortran/parse.c:3071
0x6de3c1 parse_spec
        ../../gcc/fortran/parse.c:3691
0x6e05c3 parse_progunit
        ../../gcc/fortran/parse.c:5521
0x6e1b64 gfc_parse_file()
        ../../gcc/fortran/parse.c:6030
0x725822 gfc_be_parse_file
        ../../gcc/fortran/f95-lang.c:198