--- a/langtools/src/share/classes/com/sun/tools/javac/tree/TreeScanner.java	Mon Jan 10 14:57:59 2011 -0800
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/TreeScanner.java	Mon Jan 10 15:08:31 2011 -0800
@@ -309,6 +309,6 @@
     }
 
     public void visitTree(JCTree tree) {
-        assert false;
+        Assert.error();
     }
 }