diff -r 000000000000 -r f90c822e73f8 test/compiler/6663621/IVTest.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/compiler/6663621/IVTest.java	Wed Apr 27 01:25:04 2016 +0800
@@ -0,0 +1,117 @@
+/*
+ * Copyright (c) 1997, 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 6663621
+ * @summary JVM crashes while trying to execute api/java_security/Signature/SignatureTests.html#initSign tests.
+ */
+
+public class IVTest {
+    static int paddedSize;
+
+    static void padV15(byte[] padded) {
+        int psSize = padded.length;
+        int k = 0;
+        while (psSize-- > 0) {
+            padded[k++] = (byte)0xff;
+        }
+    }
+
+    static void padV15_2(int paddedSize) {
+        byte[] padded = new byte[paddedSize];
+        int psSize = padded.length;
+        int k = 0;
+        while (psSize-- > 0) {
+            padded[k++] = (byte)0xff;
+        }
+    }
+
+    static void padV15_3() {
+        byte[] padded = new byte[paddedSize];
+        int psSize = padded.length;
+        int k = 0;
+        while (psSize-- > 0) {
+            padded[k++] = (byte)0xff;
+        }
+    }
+
+    static void padV15_4() {
+        byte[] padded = new byte[paddedSize];
+        int psSize = padded.length;
+        for (int k = 0;psSize > 0; psSize--) {
+            int i = padded.length - psSize;
+            padded[i] = (byte)0xff;
+        }
+    }
+
+    static void padV15_5() {
+        byte[] padded = new byte[paddedSize];
+        int psSize = padded.length;
+        int k = psSize - 1;
+        for (int i = 0; i < psSize; i++) {
+            padded[k--] = (byte)0xff;
+        }
+    }
+
+    public static void main(String argv[]) {
+        int bounds = 1024;
+        int lim = 500000;
+        long start = System.currentTimeMillis();
+        for (int j = 0; j < lim; j++) {
+            paddedSize = j % bounds;
+            padV15(new byte[paddedSize]);
+        }
+        long end = System.currentTimeMillis();
+        System.out.println(end - start);
+        start = System.currentTimeMillis();
+        for (int j = 0; j < lim; j++) {
+            paddedSize = j % bounds;
+            padV15_2(paddedSize);
+        }
+        end = System.currentTimeMillis();
+        System.out.println(end - start);
+        start = System.currentTimeMillis();
+        for (int j = 0; j < lim; j++) {
+            paddedSize = j % bounds;
+            padV15_3();
+        }
+        end = System.currentTimeMillis();
+        System.out.println(end - start);
+        start = System.currentTimeMillis();
+        for (int j = 0; j < lim; j++) {
+            paddedSize = j % bounds;
+            padV15_4();
+        }
+        end = System.currentTimeMillis();
+        System.out.println(end - start);
+        start = System.currentTimeMillis();
+        for (int j = 0; j < lim; j++) {
+            paddedSize = j % bounds;
+            padV15_5();
+        }
+        end = System.currentTimeMillis();
+        System.out.println(end - start);
+    }
+}