--- a/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java	Sat May 07 20:13:47 2016 +0530
+++ b/nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/parser/Parser.java	Mon May 09 10:48:10 2016 +0530
@@ -4711,7 +4711,7 @@
         expect(ARROW);
 
         final long functionToken = Token.recast(startToken, ARROW);
-        final IdentNode name = new IdentNode(functionToken, Token.descPosition(functionToken), "=>:" + functionLine);
+        final IdentNode name = new IdentNode(functionToken, Token.descPosition(functionToken), NameCodec.encode("=>:") + functionLine);
         final ParserContextFunctionNode functionNode = createParserContextFunctionNode(name, functionToken, FunctionNode.Kind.ARROW, functionLine, null);
         functionNode.setFlag(FunctionNode.IS_ANONYMOUS);
 

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/nashorn/test/script/basic/es6/JDK-8156492.js	Mon May 09 10:48:10 2016 +0530
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2016, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ * 
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ * 
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ * 
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * JDK-8156492: ClassFormatError thrown when arrow function is used
+ *
+ * @test
+ * @run
+ * @option --language=es6
+ */
+
+Assert.assertTrue((x=>x*2)(3) == 6);
+Assert.assertTrue(((x,y)=>x+y)("hello", "world") == "helloworld");
+var arr = [4, 89, 69];
+Assert.assertTrue(arr.map(x=>x+1).toString() == "5,90,70");