--- old/src/java.base/share/classes/java/lang/Class.java	2018-03-06 15:23:14.000000000 -0800
+++ new/src/java.base/share/classes/java/lang/Class.java	2018-03-06 15:23:14.000000000 -0800
@@ -533,8 +533,8 @@
         throws InstantiationException, IllegalAccessException
     {
         if (this.isValue()) {
-            throw new UnsupportedOperationException("newInstance on a value class "
-                + this.getName());
+            throw new IllegalAccessException(
+                "cannot create new instance of value class " + this.getName());
         }
 
         SecurityManager sm = System.getSecurityManager();