1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 8001071 27 * @summary Add simple range check into VM implemenation of Unsafe access methods 28 * @library /testlibrary 29 */ 30 31 import com.oracle.java.testlibrary.*; 32 import sun.misc.Unsafe; 33 34 public class RangeCheck { 35 36 public static void main(String args[]) throws Exception { 37 if (!Platform.isDebugBuild()) { 38 System.out.println("Testing assert which requires a debug build. Passing silently."); 39 return; 40 } 41 42 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 43 true, 44 "-Xmx32m", 45 "-XX:-TransmitErrorReport", 46 "-XX:-InlineUnsafeOps", // The compiler intrinsics doesn't have the assert 47 "-XX:-CreateCoredumpOnCrash", 48 DummyClassWithMainRangeCheck.class.getName()); 49 50 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 51 output.shouldMatch("assert\\(byte_offset < p_size\\) failed: Unsafe access: offset \\d+ > object's size \\d+"); 52 } 53 54 public static class DummyClassWithMainRangeCheck { 55 public static void main(String args[]) throws Exception { 56 Unsafe unsafe = Utils.getUnsafe(); 57 unsafe.getObject(new DummyClassWithMainRangeCheck(), Short.MAX_VALUE); 58 } 59 } 60 }