| /* |
| * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8186092 8199852 |
| * @compile ../common/Foo.java |
| * ../common/J.java |
| * I.java |
| * ../common/C.jasm |
| * Task.java |
| * ../common/PreemptingClassLoader.java |
| * @run main/othervm Test |
| */ |
| |
| public class Test { |
| |
| // Break expected error messages into 3 parts since the loader name includes its identity |
| // hash which is unique and can't be compared against. |
| static String expectedErrorMessage1_part1 = "loader constraint violation for class test.Task: when " + |
| "selecting overriding method 'test.Foo test.Task.m()' the " + |
| "class loader PreemptingClassLoader @"; |
| static String expectedErrorMessage1_part2 = " of the selected method's type test.Task, and the class " + |
| "loader 'app' for its super type test.J have different Class objects " + |
| "for the type test.Foo used in the signature (test.Task is in unnamed " + |
| "module of loader PreemptingClassLoader @"; |
| static String expectedErrorMessage1_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')"; |
| |
| static String expectedErrorMessage2_part1 = "loader constraint violation for class test.Task: when " + |
| "selecting overriding method 'test.Foo test.Task.m()' the " + |
| "class loader 'VtableLdrCnstrnt_Test_Loader' @"; |
| static String expectedErrorMessage2_part2 = " of the selected method's type test.Task, and the class " + |
| "loader 'app' for its super type test.J have different Class objects " + |
| "for the type test.Foo used in the signature (test.Task is in unnamed " + |
| "module of loader 'VtableLdrCnstrnt_Test_Loader' @"; |
| static String expectedErrorMessage2_part3 = ", parent loader 'app'; test.J is in unnamed module of loader 'app')"; |
| |
| // Test that the error message is correct when a loader constraint error is |
| // detected during vtable creation. |
| // |
| // In this test, during vtable creation for class Task, method "Task.m()LFoo;" |
| // overrides "J.m()LFoo;". But, Task's class Foo and super type J's class Foo |
| // are different. So, a LinkageError exception should be thrown because the |
| // loader constraint check will fail. |
| public static void test(String loaderName, |
| String expectedErrorMessage_part1, |
| String expectedErrorMessage_part2, |
| String expectedErrorMessage_part3) throws Exception { |
| Class<?> c = test.Foo.class; // Forces standard class loader to load Foo. |
| String[] classNames = {"test.Task", "test.Foo", "test.I"}; |
| ClassLoader l = new PreemptingClassLoader(loaderName, classNames); |
| l.loadClass("test.Foo"); |
| try { |
| l.loadClass("test.Task").newInstance(); |
| throw new RuntimeException("Expected LinkageError exception not thrown"); |
| } catch (LinkageError e) { |
| String errorMsg = e.getMessage(); |
| if (!errorMsg.contains(expectedErrorMessage_part1) || |
| !errorMsg.contains(expectedErrorMessage_part2) || |
| !errorMsg.contains(expectedErrorMessage_part3)) { |
| System.out.println("Expected: " + expectedErrorMessage_part1 + "<id>" + expectedErrorMessage_part2 + "\n" + |
| "but got: " + errorMsg); |
| throw new RuntimeException("Wrong LinkageError exception thrown: " + errorMsg); |
| } |
| System.out.println("Passed with message: " + errorMsg); |
| } |
| } |
| |
| public static void main(String args[]) throws Exception { |
| test(null, expectedErrorMessage1_part1, |
| expectedErrorMessage1_part2, expectedErrorMessage1_part3); |
| test("VtableLdrCnstrnt_Test_Loader", expectedErrorMessage2_part1, |
| expectedErrorMessage2_part2, expectedErrorMessage2_part3); |
| } |
| } |