--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java	Fri Jan 13 19:29:55 2017 -0800
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/LambdaToMethod.java	Tue Jan 17 09:17:10 2017 +0530
@@ -792,6 +792,7 @@
             switch (tree.getTag()) {
                 case APPLY: ((JCMethodInvocation)tree).varargsElement = varargsElement; break;
                 case NEWCLASS: ((JCNewClass)tree).varargsElement = varargsElement; break;
+                case TYPECAST: setVarargsIfNeeded(((JCTypeCast) tree).expr, varargsElement); break;
                 default: throw new AssertionError();
             }
         }