--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/JCTree.java	Fri Oct 06 08:37:08 2017 +0200
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/JCTree.java	Fri Oct 06 17:18:03 2017 +0200
@@ -920,6 +920,8 @@
         public JCExpression init;
         /** symbol */
         public VarSymbol sym;
+        /** explicit start pos */
+        public int startPos = Position.NOPOS;
 
         protected JCVariableDecl(JCModifiers mods,
                          Name name,