--- /dev/null	2016-12-31 18:50:47.837000228 -0500
+++ new/test/runtime/duplAttributes/TestDupSignatureAttr.java	2017-03-07 08:30:38.703947274 -0500
@@ -0,0 +1,73 @@
+/*
+ * Copyright (c) 2017, 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.
+ */
+
+/*
+ * @test
+ * @bug 8176147
+ * @summary Throw ClassFormatError exception for multiple Signature attributes
+ * @compile DupSignatureAttrs.jcod
+ * @run main TestDupSignatureAttr
+ */
+
+public class TestDupSignatureAttr {
+    public static void main(String args[]) throws Throwable {
+
+        System.out.println("Regression test for bug 8176147");
+
+        // Duplicate Class Signature attributes.
+        try {
+            Class newClass = Class.forName("DupClassSigAttrs");
+            throw new RuntimeException("Expected ClassFormatError exception not thrown");
+        } catch (java.lang.ClassFormatError e) {
+            if (!e.getMessage().contains("Multiple Signature attributes in class file")) {
+                throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
+                                           e.getMessage());
+            }
+        }
+
+        // Duplicate Method Signature attributes.
+        try {
+            Class newClass = Class.forName("DupMthSigAttrs");
+            throw new RuntimeException("Expected ClassFormatError exception not thrown");
+        } catch (java.lang.ClassFormatError e) {
+            if (!e.getMessage().contains("Multiple Signature attributes for method")) {
+                throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
+                                           e.getMessage());
+            }
+        }
+
+        // Duplicate Field Signature attributes.
+        try {
+            Class newClass = Class.forName("DupFldSigAttrs");
+            throw new RuntimeException("Expected ClassFormatError exception not thrown");
+        } catch (java.lang.ClassFormatError e) {
+            if (!e.getMessage().contains("Multiple Signature attributes for field")) {
+                throw new RuntimeException("Wrong ClassFormatError exception thrown: " +
+                                           e.getMessage());
+            }
+        }
+
+        // Multiple Signature attributes but no duplicates.
+        Class newClass = Class.forName("OkaySigAttrs");
+    }
+}