--- old/src/java.base/share/classes/java/lang/reflect/Field.java	2018-03-06 15:23:30.000000000 -0800
+++ new/src/java.base/share/classes/java/lang/reflect/Field.java	2018-03-06 15:23:29.000000000 -0800
@@ -167,6 +167,12 @@
     @CallerSensitive
     public void setAccessible(boolean flag) {
         AccessibleObject.checkPermission();
+
+        if (clazz.isValue() && Modifier.isFinal(modifiers)) {
+            throw new InaccessibleObjectException(
+                "Unable to make a value class field \"" + this + "\" accessible");
+        }
+
         if (flag) checkCanSetAccessible(Reflection.getCallerClass());
         setAccessible0(flag);
     }