diff test/serviceability/jvmti/GetObjectSizeOverflowAgent.java @ 17946:997fd9660dd5

8027230: Overflow in java.lang.instrument.Instrumentation.getObjectSize() method Reviewed-by: dholmes, sspitsyn
author allwin
date Thu, 22 May 2014 09:12:29 +0200
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/serviceability/jvmti/GetObjectSizeOverflowAgent.java	Thu May 22 09:12:29 2014 +0200
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2014, 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.
+ */
+import java.lang.instrument.*;
+
+public class GetObjectSizeOverflowAgent {
+
+    static Instrumentation instrumentation;
+
+    public static void premain(String agentArgs, Instrumentation instrumentation) {
+        GetObjectSizeOverflowAgent.instrumentation = instrumentation;
+    }
+
+    public static void main(String[] args) throws Exception {
+        int[] a = new int[600_000_000];
+        long size = instrumentation.getObjectSize(a);
+
+        if (size < 2_400_000_000L) {
+            throw new RuntimeException("Invalid size of array, expected >= 2400000000, got " + size);
+        }
+
+        System.out.println("GetObjectSizeOverflow passed");
+    }
+}