--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/sun/nio/cs/BufferUnderflowEUCTWTest.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,64 @@
+/*
+ * Copyright (c) 2008, 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 4834154
+   @summary Decode a file using EUC-TW, test for decode errors
+ */
+
+/*
+ * Tests for decode errors in NIO EUC-TW decoder. 4734607 details
+ * decoding errors which occur when the input file > 8k in size
+ * and contains numerous US-ASCII range chars
+ */
+
+import java.io.*;
+
+public class BufferUnderflowEUCTWTest {
+    private static int BUFFERSIZE = 8194;
+
+    public static void main (String[] args) throws Exception {
+        int i = 0;
+        byte[] b = new byte[BUFFERSIZE];
+
+        for (; i < BUFFERSIZE - 4; i++) // pad with zeroes
+            b[i] = 0;
+
+        // Overspill a valid EUC-TW 4 byte sequence between 2
+        // successive input buffers.
+        b[i++] = (byte)0x8E;
+        b[i++] = (byte)0xA2;
+        b[i++] = (byte)0xA1;
+        b[i++] = (byte)0xA6;
+
+        ByteArrayInputStream r = new ByteArrayInputStream(b);
+
+        try {
+            InputStreamReader isr=new InputStreamReader(r, "EUC-TW");
+            char[] cc = new char[BUFFERSIZE];
+            int cx = isr.read(cc);
+        } catch (ArrayIndexOutOfBoundsException e) {
+            throw new Exception("Array Index error: bug 4834154");
+        }
+    }
+}