1 /*
2 * Copyright (c) 2017, 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 */
31 * Task.java
32 * ../common/PreemptingClassLoader.java
33 * @run main/othervm Test
34 */
35
36 import java.io.PrintStream;
37 import java.lang.reflect.*;
38
39 public class Test {
40
41 // Test that LinkageError exceptions are not thrown during vtable creation,
42 // for loader constraint errors, if the target method is an overpass method.
43 //
44 // In this test, during vtable creation for class Task, the target method
45 // "Task.m()LFoo;" is an overpass method (that throws an AME). So, even
46 // though it is inheriting the method from its super class C, and Task has
47 // a different class Foo than C, no LinkageError exception should be thrown
48 // because the loader constraint check that would cause the LinkageError
49 // should not be done.
50 public static void main(String args[]) throws Exception {
51 Class<?> c = Foo.class; // forces standard class loader to load Foo
52 ClassLoader l = new PreemptingClassLoader("Task", "Foo", "I", "J");
53 l.loadClass("Foo");
54 l.loadClass("Task").newInstance();
55 Task t = new Task();
56 try {
57 t.m(); // Should get AME
58 throw new RuntimeException("Missing AbstractMethodError exception");
59 } catch (AbstractMethodError e) {
60 if (!e.getMessage().contains("Method Task.m()LFoo; is abstract")) {
61 throw new RuntimeException("Wrong AME exception thrown: " + e.getMessage());
62 }
63 }
64 }
65
66 }
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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 */
31 * Task.java
32 * ../common/PreemptingClassLoader.java
33 * @run main/othervm Test
34 */
35
36 import java.io.PrintStream;
37 import java.lang.reflect.*;
38
39 public class Test {
40
41 // Test that LinkageError exceptions are not thrown during vtable creation,
42 // for loader constraint errors, if the target method is an overpass method.
43 //
44 // In this test, during vtable creation for class Task, the target method
45 // "Task.m()LFoo;" is an overpass method (that throws an AME). So, even
46 // though it is inheriting the method from its super class C, and Task has
47 // a different class Foo than C, no LinkageError exception should be thrown
48 // because the loader constraint check that would cause the LinkageError
49 // should not be done.
50 public static void main(String args[]) throws Exception {
51 Class<?> c = test.Foo.class; // forces standard class loader to load Foo
52 ClassLoader l = new PreemptingClassLoader("test.Task", "test.Foo", "test.I", "test.J");
53 l.loadClass("test.Foo");
54 l.loadClass("test.Task").newInstance();
55 test.Task t = new test.Task();
56 try {
57 t.m(); // Should get AME
58 throw new RuntimeException("Missing AbstractMethodError exception");
59 } catch (AbstractMethodError e) {
60 if (!e.getMessage().contains("Method test/Task.m()Ltest/Foo; is abstract")) {
61 throw new RuntimeException("Wrong AME exception thrown: " + e.getMessage());
62 }
63 }
64 }
65
66 }
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