--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java	Tue Jan 10 11:31:59 2017 -0800
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java	Wed Jan 11 10:59:57 2017 +0100
@@ -921,6 +921,7 @@
 
         public PackageSymbol unnamedPackage;
         public Map<Name, PackageSymbol> visiblePackages;
+        public Set<ModuleSymbol> readModules;
         public List<Symbol> enclosedPackages = List.nil();
 
         public Completer usesProvidesCompleter = Completer.NULL_COMPLETER;