--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java	Tue Nov 29 11:51:01 2016 +0100
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/main/Option.java	Thu Dec 01 11:16:45 2016 +0000
@@ -561,6 +561,8 @@
         }
     },
 
+    ADD_OPENS("--add-opens", null, null, HIDDEN, BASIC),
+
     ADD_READS("--add-reads", "opt.arg.addReads", "opt.addReads", EXTENDED, BASIC) {
         @Override
         public void process(OptionHelper helper, String option, String arg) throws InvalidValueException {