1 /* 2 * Copyright (c) 2017, 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 8186092 8199852 27 * @compile ../common/Foo.java 28 * ../common/J.java 29 * I.java 30 * ../common/C.jasm 31 * Task.java 32 * ../common/PreemptingClassLoader.java 33 * @run main/othervm Test 34 */ 35 36 public class Test { 37 38 // Break expected error messages into 3 parts since the loader name includes its identity 39 // hash which is unique and can't be compared against. 40 static String expectedErrorMessage1_part1 = "loader constraint violation in interface itable initialization for " + 41 "class test.C: when selecting method test.I.m()Ltest/Foo; the class loader " + 42 "PreemptingClassLoader @"; 43 static String expectedErrorMessage1_part2 = " for super interface test.I, and the class loader 'app' of the " + 44 "selected method's type, test.J have different Class objects for the " + 45 "type test.Foo used in the signature (test.I is in unnamed module of loader " + 46 "PreemptingClassLoader @"; 47 static String expectedErrorMessage1_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')"; 48 49 static String expectedErrorMessage2_part1 = "loader constraint violation in interface itable initialization for " + 50 "class test.C: when selecting method test.I.m()Ltest/Foo; the class loader " + 51 "'ItableLdrCnstrnt_Test_Loader' @"; 52 static String expectedErrorMessage2_part2 = " for super interface test.I, and the class loader 'app' of the " + 53 "selected method's type, test.J have different Class objects for the " + 54 "type test.Foo used in the signature (test.I is in unnamed module of loader " + 55 "'ItableLdrCnstrnt_Test_Loader' @"; 56 static String expectedErrorMessage2_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')"; 57 58 // Test that the error message is correct when a loader constraint error is 59 // detected during itable creation. 60 // 61 // In this test, during itable creation for class C, method "m()LFoo;" for 62 // C's super interface I has a different class Foo than the selected method's 63 // type super interface J. The selected method is not an overpass method nor 64 // otherwise excluded from loader constraint checking. So, a LinkageError 65 // exception should be thrown because the loader constraint check will fail. 66 public static void test(String loaderName, 67 String expectedErrorMessage_part1, 68 String expectedErrorMessage_part2, 69 String expectedErrorMessage_part3) throws Exception { 70 Class<?> c = test.Foo.class; // Forces standard class loader to load Foo. 71 String[] classNames = {"test.Task", "test.Foo", "test.C", "test.I"}; 72 ClassLoader l = new PreemptingClassLoader(loaderName, classNames); 73 Runnable r = (Runnable) l.loadClass("test.Task").newInstance(); 74 try { 75 r.run(); 76 throw new RuntimeException("Expected LinkageError exception not thrown"); 77 } catch (LinkageError e) { 78 String errorMsg = e.getMessage(); 79 if (!errorMsg.contains(expectedErrorMessage_part1) || 80 !errorMsg.contains(expectedErrorMessage_part2) || 81 !errorMsg.contains(expectedErrorMessage_part3)) { 82 System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" + 83 "but got: " + errorMsg); 84 throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg); 85 } 86 System.out.println("Passed with message: " + errorMsg); 87 } 88 } 89 90 public static void main(String... args) throws Exception { 91 test(null, expectedErrorMessage1_part1, expectedErrorMessage1_part2, expectedErrorMessage1_part3); 92 test("ItableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1, expectedErrorMessage2_part2, expectedErrorMessage2_part3); 93 } 94 }