| /* |
| * Copyright (c) 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 |
| * @compile pkg/Grand.java pkg/Parent.java pkg/ClassLoaderForParentFoo.java |
| * @compile pkg/ClassLoaderForChildGrandFoo.java pkg/Child.jasm |
| * @run main/othervm LdrCnstrFldMsgTest |
| */ |
| |
| import java.lang.reflect.Method; |
| |
| // Check that LinkageError loader constraint message for fields contains the |
| // correct information. |
| // |
| // The test creates two class loaders. The first class loader loads classes |
| // Child, Foo, and Grand. The second class loader loads Parent and Foo. Class |
| // Parent is a sub-class of Grand and class Child is a sub-class of Parent. |
| // Class Child tries to load Parent._field1. This should fail because type Foo |
| // for Parent._field1 is a different type than Child's Foo. |
| // |
| public class LdrCnstrFldMsgTest { |
| public static void main(String... args) throws Exception { |
| ClassLoader l = new pkg.ClassLoaderForChildGrandFoo("pkg.Foo", "pkg.Child", "pkg.Grand"); |
| l.loadClass("pkg.Foo"); |
| |
| // Try to call a public method in Grand. |
| Runnable r = (Runnable) l.loadClass("pkg.Child").newInstance(); |
| try { |
| r.run(); |
| throw new RuntimeException("Expected LinkageError exception not thrown"); |
| } catch (java.lang.LinkageError e) { |
| if (!e.getMessage().contains("for the field's defining type, pkg.Parent,") || |
| !e.getMessage().contains("have different Class objects for type pkg.Foo")) { |
| throw new RuntimeException("Wrong LinkageError exception thrown: " + e.toString()); |
| } |
| } |
| } |
| } |