--- old/src/share/classes/javax/sound/midi/MidiFileFormat.java	2014-06-04 00:19:41.000000000 -0700
+++ new/src/share/classes/javax/sound/midi/MidiFileFormat.java	2014-06-04 00:19:41.000000000 -0700
@@ -266,6 +266,7 @@
      * @see #getProperty(String)
      * @since 1.5
      */
+    @SuppressWarnings("unchecked") // Cast of result of clone
     public Map<String,Object> properties() {
         Map<String,Object> ret;
         if (properties == null) {