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 * @compile ../common/Foo.java 27 * ../common/PreemptingClassLoader.java 28 * @run main/othervm Test 29 * @run main/othervm -Xint Test 30 * @run main/othervm -Xcomp Test 31 * @run main/othervm -XX:+TieredCompilation -XX:TieredStopAtLevel=1 Test 32 * @run main/othervm -XX:-TieredCompilation Test 33 */ 34 35 public class Test { 36 37 // Check that all names have external formatting ('.' and not '/' in package names). 38 // Check for parent of class loader. 39 static String expectedErrorMessage1 = 40 "loader \"<unnamed>\" (instance of PreemptingClassLoader, " + 41 "child of \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) " + 42 "attempted duplicate class definition for test.Foo."; 43 44 // Check that all names have external formatting ('.' and not '/' in package names). 45 // Check for name and parent of class loader. 46 static String expectedErrorMessage2 = 47 "loader \"DuplicateLE_Test_Loader\" (instance of PreemptingClassLoader, " + 48 "child of \"app\" jdk.internal.loader.ClassLoaders$AppClassLoader) " + 49 "attempted duplicate class definition for test.Foo."; 50 51 // Test that the error message is correct when a loader constraint error is 52 // detected during vtable creation. 53 // 54 // In this test, during vtable creation for class Task, method "Task.m()LFoo;" 55 // overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo 56 // are different. So, a LinkageError exception should be thrown because the 57 // loader constraint check will fail. 58 public static void test(String loaderName, String expectedErrorMessage) throws Exception { 59 String[] classNames = {"test.Foo"}; 60 ClassLoader l = new PreemptingClassLoader(loaderName, classNames, false); 61 l.loadClass("test.Foo"); 62 try { 63 l.loadClass("test.Foo").newInstance(); 64 throw new RuntimeException("Expected LinkageError exception not thrown"); 65 } catch (LinkageError e) { 66 String errorMsg = e.getMessage(); 67 if (!errorMsg.equals(expectedErrorMessage)) { 68 System.out.println("Expected: " + expectedErrorMessage + "\n" + 69 "but got: " + errorMsg); 70 throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg); 71 } 72 System.out.println("Passed with message: " + errorMsg); 73 } 74 } 75 76 public static void main(String args[]) throws Exception { 77 test(null, expectedErrorMessage1); 78 test("DuplicateLE_Test_Loader", expectedErrorMessage2); 79 } 80 } 81