1 /* 2 * Copyright (c) 2017, 2020, 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 8046171 8211065 27 * @summary Setup nestmate calls to private methods then use 28 * modified jcod classes to introduce errors. Test with 29 * and without verification enabled 30 * @compile TestInvokeErrors.java 31 * @compile MissingMethod.jcod 32 * MissingMethodWithSuper.jcod 33 * MissingNestHost.jcod 34 * @run main TestInvokeErrors true 35 * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:-BytecodeVerificationRemote -XX:-BytecodeVerificationLocal TestInvokeErrors false 36 */ 37 38 public class TestInvokeErrors { 39 40 static class Nested { 41 private void priv_invoke() { 42 System.out.println("Nested::priv_invoke"); 43 } 44 } 45 46 static class MissingMethod { 47 // jcod version will rename this method to not_priv_invoke 48 private void priv_invoke() { 49 System.out.println("MissingMethod::priv_invoke"); 50 } 51 } 52 53 static class MissingMethodWithSuper extends Nested { 54 // jcod version will rename this method to not_priv_invoke 55 private void priv_invoke() { 56 System.out.println("MissingMethodWithSuper::priv_invoke"); 57 } 58 } 59 60 static class MissingNestHost { 61 // jcod version will change NestHost to a non-existent class 62 private void priv_invoke() { 63 System.out.println("MissingNestHost::priv_invoke"); 64 } 65 } 66 67 // Helper class adds a level of indirection to avoid the main class 68 // failing verification if these tests are written directly in main. 69 // That can only happen if using invokespecial for nestmate invocation. 70 static class Helper { 71 static void doTest() { 72 try { 73 MissingNestHost m = new MissingNestHost(); 74 m.priv_invoke(); 75 throw new Error("Unexpected success invoking MissingNestHost.priv_invoke"); 76 } 77 catch (IllegalAccessError iae) { 78 if (iae.getMessage().contains("java.lang.NoClassDefFoundError: NoSuchClass")) { 79 System.out.println("Got expected exception:" + iae); 80 } else { 81 throw new Error("Unexpected exception", iae); 82 } 83 } 84 } 85 } 86 87 public static void main(String[] args) throws Throwable { 88 // some errors change depending on whether they are caught by the 89 // verifier first 90 boolean verifying = Boolean.parseBoolean(args[0]); 91 System.out.println("Verification is " + 92 (verifying ? "enabled" : "disabled")); 93 94 try { 95 MissingMethod m = new MissingMethod(); 96 m.priv_invoke(); 97 throw new Error("Unexpected success invoking MissingMethod.priv_invoke"); 98 } 99 catch (NoSuchMethodError nsme) { 100 System.out.println("Got expected exception:" + nsme); 101 } 102 103 // This test was revised to expect successful invocation of the 104 // super class method - see JDK-8211065 105 MissingMethodWithSuper m = new MissingMethodWithSuper(); 106 m.priv_invoke(); 107 108 // Verification of Helper will trigger the nestmate access check failure 109 try { 110 Helper.doTest(); 111 } 112 catch (IllegalAccessError iae) { 113 if (verifying) 114 System.out.println("Got expected exception:" + iae); 115 else 116 throw new Error("Unexpected error loading Helper class with verification disabled", iae); 117 } 118 } 119 }