1 /* 2 * Copyright (c) 2018, 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 6194361 27 * @summary Make sure the VM doesn't crash and throws a SecurityException 28 * if defineClass() is called on a byte buffer that parses into a invalid 29 * java.lang.Object class. 30 * @library /test/lib 31 * @modules java.base/jdk.internal.misc 32 * java.compiler 33 * @run main TestLoadObject 34 */ 35 36 import java.io.*; 37 import jdk.test.lib.compiler.InMemoryJavaCompiler; 38 39 public class TestLoadObject extends ClassLoader { 40 41 static String source = 42 " package java.lang;" + 43 " public class Object" + 44 " {" + 45 " int field;" + 46 " public boolean equals(Object o) {" + 47 " System.out.println(o.field);" + 48 " return false;" + 49 " }" + 50 " }"; 51 52 public static void main(String[] args) throws Exception 53 { 54 try { 55 TestLoadObject loader = new TestLoadObject(); 56 byte[] buf = InMemoryJavaCompiler.compile("java.lang.Object", source, 57 "--patch-module=java.base"); 58 System.out.println("test defineClass"); 59 Class c = loader.defineClass(buf, 0, buf.length); 60 System.out.println("test FAILS"); 61 throw new Exception("Did not get security exception"); 62 } catch(SecurityException e) { 63 System.out.println("test PASSES"); 64 } 65 } 66 }