diff -r eea0065bcc1a -r 2adac52f955e vm/src/test/java/org/apidesign/vm4brwsr/Classes.java
--- a/vm/src/test/java/org/apidesign/vm4brwsr/Classes.java	Thu Dec 20 08:59:47 2012 +0100
+++ b/vm/src/test/java/org/apidesign/vm4brwsr/Classes.java	Sat Dec 29 19:46:09 2012 +0100
@@ -72,6 +72,14 @@
         }
         throw new IllegalStateException("Not a subtype: " + ioe);
     }
+    public static String newInstanceNoPubConstructor() throws Exception {
+        try {
+            Float f = Float.class.newInstance();
+            return "wrong, can't instantiate: " + f;
+        } catch (Exception ex) {
+            return (ex.getClass().getName() + ":" + ex.getMessage()).toString().toString();
+        }
+    }
     public static int getMarker() {
         if (!Classes.class.isAnnotationPresent(ClassesMarker.class)) {
             return -2;