--- a/dyncast.patch	Fri Apr 03 00:28:04 2009 -0700
+++ b/dyncast.patch	Fri Apr 03 00:28:27 2009 -0700
@@ -53,6 +53,15 @@ diff --git a/src/share/classes/com/sun/t
          if (t.tag == ERROR)
              return true;
          if (t.tag <= INT && t.constValue() != null) {
+@@ -2245,6 +2250,8 @@
+                 Name fullname = cls.tsym.getQualifiedName();
+                 if (fullname == names.java_lang_Object)
+                     cls.rank_field = 0;
++                else if (fullname == names.java_dyn_Dynamic)
++                    cls.rank_field = 1;
+                 else {
+                     int r = rank(supertype(cls));
+                     for (List<Type> l = interfaces(cls);
 diff --git a/src/share/classes/com/sun/tools/javac/comp/Lower.java b/src/share/classes/com/sun/tools/javac/comp/Lower.java
 --- a/src/share/classes/com/sun/tools/javac/comp/Lower.java
 +++ b/src/share/classes/com/sun/tools/javac/comp/Lower.java