--- old/src/java.base/share/classes/jdk/internal/module/SystemModules.java	2017-03-21 13:44:13.153116522 +0000
+++ new/src/java.base/share/classes/jdk/internal/module/SystemModules.java	2017-03-21 13:44:12.955102935 +0000
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,7 +27,7 @@
 
 import java.lang.module.ModuleDescriptor;
 
-/*
+/**
  * SystemModules class will be generated at link time to create
  * ModuleDescriptor for the system modules directly to improve
  * the module descriptor reconstitution time.
@@ -65,7 +65,7 @@
     }
 
     /**
-     * Returns a non-empty array of ModuleDescriptors in the run-time image.
+     * Returns a non-empty array of ModuleDescriptor objects in the run-time image.
      *
      * When running an exploded image it returns an empty array.
      */
@@ -74,6 +74,15 @@
     }
 
     /**
+     * Returns a non-empty array of ModuleTarget objects in the run-time image.
+     *
+     * When running an exploded image it returns an empty array.
+     */
+    public static ModuleTarget[] targets() {
+        throw new InternalError("expected to be overridden at link time");
+    }
+
+    /**
      * Returns a non-empty array of ModuleHashes recorded in each module
      * in the run-time image.
      *