diff -r 5f95a1b1f73d -r e1881d258206 jdk/test/java/security/testlibrary/Proc.java
--- a/jdk/test/java/security/testlibrary/Proc.java	Wed Feb 15 09:10:24 2017 +0100
+++ b/jdk/test/java/security/testlibrary/Proc.java	Wed Feb 15 21:46:50 2017 +0800
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 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
@@ -176,6 +176,14 @@
         prop.put(a, b);
         return this;
     }
+    // Inherit the value of a system property
+    public Proc inheritProp(String k) {
+        String v = System.getProperty(k);
+        if (v != null) {
+            prop.put(k, v);
+        }
+        return this;
+    }
     // Sets classpath. If not called, Proc will choose a classpath. If called
     // with no arg, no classpath will be used. Can be called multiple times.
     public Proc cp(String... s) {