--- a/langtools/src/share/classes/com/sun/tools/javac/tree/TreeCopier.java	Fri May 24 11:26:17 2013 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/TreeCopier.java	Mon May 27 13:44:14 2013 +0100
@@ -340,7 +340,7 @@
 
     public JCTree visitThrow(ThrowTree node, P p) {
         JCThrow t = (JCThrow) node;
-        JCTree expr = copy(t.expr, p);
+        JCExpression expr = copy(t.expr, p);
         return M.at(t.pos).Throw(expr);
     }