1 /* 2 * Copyright (c) 2014, 2016, 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 /test/lib 29 * @modules java.base/jdk.internal.misc 30 * java.management 31 */ 32 33 import jdk.test.lib.process.ProcessTools; 34 import jdk.test.lib.process.OutputAnalyzer; 35 import jdk.test.lib.Platform; 36 37 import jdk.internal.misc.Unsafe; 38 39 public class RangeCheck { 40 41 public static void main(String args[]) throws Exception { 42 if (!Platform.isDebugBuild()) { 43 System.out.println("Testing assert which requires a debug build. Passing silently."); 44 return; 45 } 46 47 ProcessBuilder pb = ProcessTools.createJavaProcessBuilder( 48 true, 49 "-Xmx32m", 50 "--add-exports=java.base/jdk.internal.misc=ALL-UNNAMED", 51 "-XX:-TransmitErrorReport", 52 "-XX:-CreateCoredumpOnCrash", 53 "-XX:-InlineUnsafeOps", // The compiler intrinsics doesn't have the assert 54 DummyClassWithMainRangeCheck.class.getName()); 55 56 OutputAnalyzer output = new OutputAnalyzer(pb.start()); 57 output.shouldMatch("assert\\(byte_offset < p_size\\) failed: Unsafe access: offset \\d+ > object's size \\d+"); 58 } 59 60 public static class DummyClassWithMainRangeCheck { 61 public static void main(String args[]) throws Exception { 62 Unsafe unsafe = Unsafe.getUnsafe(); 63 unsafe.getObject(new DummyClassWithMainRangeCheck(), Short.MAX_VALUE); 64 } 65 } 66 }