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 * @test 25 * @bug 8202669 26 * @summary Make sure the vm doesn't crash on notification for unloading an invalid 27 * java.lang.Object class. 28 * @library /runtime/testlibrary /test/lib 29 * @modules java.base/jdk.internal.misc 30 * java.compiler 31 * @run main TestUnloadClassError 32 */ 33 34 import jdk.test.lib.compiler.InMemoryJavaCompiler; 35 36 public class TestUnloadClassError extends ClassLoader { 37 38 static String source = 39 " package java.lang;" + 40 " public class Object" + 41 " {" + 42 " int field;" + 43 " public boolean equals(Object o) {" + 44 " System.out.println(o.field);" + 45 " return false;" + 46 " }" + 47 " }"; 48 49 public static void main(String[] args) throws Exception 50 { 51 try { 52 TestUnloadClassError loader = new TestUnloadClassError(); 53 byte[] buf = InMemoryJavaCompiler.compile("java.lang.Object", source, 54 "--patch-module=java.base"); 55 Class c = loader.defineClass(buf, 0, buf.length); 56 System.out.println("test FAILS"); 57 throw new RuntimeException("Did not get security exception"); 58 } catch(SecurityException e) { 59 System.out.println("test expects SecurityException"); 60 } 61 62 // Unload bad class 63 ClassUnloadCommon.triggerUnloading(); 64 System.out.println("test PASSES if it doesn't crash"); 65 } 66 }