* ext/pty/pty.c (chfunc): suppress a warning.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@30809 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/ripper/dummyparser.rb

@@ -184,6 +184,14 @@ class DummyParser < Ripper
     Node.new('assocs', *a)
   end
 
+  def on_word_new
+    ""
+  end
+
+  def on_word_add(word, w)
+    word << w
+  end
+
   def on_words_new
     NodeList.new
   end