parsing problem with OOP?

[Ben Abbott]

Using the developer's sources I see a parsing problem for objects constructed 
with properties which are structures.

Consider the simple class defintion ...

--------------------
function p = foobar ()
  p = struct ();
  p.s.words = {"Hello", "World"};
  p = class (p, "foobar");
endfunction
--------------------

... with two overloaded functions ...

--------------------
function display (obj)
  printf ("%s ", obj.s.words{:})
  printf ("\b.\n")
endfunction
--------------------

--------------------
function v = subsref (obj, prop)
  try
    ok = strcmp (prop.type, ".");
    disp ("Reference to struct property worked.")
  catch
    type = prop.type;
    subs = prop.subs;
    ok = strcmp (type, ".");
    disp ("Reference to struct property failed.")
  end_try_catch
  if (ok)
    v = builtin ("subsref", obj, prop);
  else
    error ("foobar:invalidsubsref",
           "Invalid subsref for property of 'foobar' object.")
  endif
endfunction
--------------------

Accessing "s" works. However, direct access to "words" fails.

octave:1> f = foobar
Hello World.
octave:2> s = f.s
Reference to struct property worked.
s =
{
  words =

  {
    [1,1] = Hello
    [1,2] = World
  }

}

octave:3> f.s.words
Reference to struct property failed.
ans =

{
  [1,1] = Hello
  [1,2] = World
}

octave:4> lasterr
ans = Invalid call to strcmp.  Correct usage is:

 -- Built-in Function:  strcmp (S1, S2)

Before I submit a bug report, is this a bug?

Ben