| /* |
| * Copyright (c) 2012, 2013, 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 8003639 |
| * @summary defaultMethod resolution and verification |
| * @run main DefaultMethodRegressionTests |
| */ |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * This set of classes/interfaces (K/I/C) is specially designed to expose a |
| * bug in the JVM where it did not find some overloaded methods in some |
| * specific situations. (fixed by hotspot changeset ffb9316fd9ed). |
| */ |
| interface K { |
| int bbb(Long l); |
| } |
| |
| interface I extends K { |
| default void aaa() {} |
| default void aab() {} |
| default void aac() {} |
| |
| default int bbb(Integer i) { return 22; } |
| default int bbb(Float f) { return 33; } |
| default int bbb(Long l) { return 44; } |
| default int bbb(Double d) { return 55; } |
| default int bbb(String s) { return 66; } |
| |
| default void caa() {} |
| default void cab() {} |
| default void cac() {} |
| } |
| |
| class C implements I {} |
| |
| public class DefaultMethodRegressionTests { |
| public static void main(String... args) { |
| new DefaultMethodRegressionTests().run(args); |
| } |
| void run(String... args) { |
| testLostOverloadedMethod(); |
| System.out.println("testLostOverloadedMethod: OK"); |
| testInferenceVerifier(); |
| System.out.println("testInferenceVerifier: OK"); |
| } |
| void testLostOverloadedMethod() { |
| C c = new C(); |
| assertEquals(c.bbb(new Integer(1)), 22); |
| assertEquals(c.bbb(new Float(1.1)), 33); |
| assertEquals(c.bbb(new Long(1L)), 44); |
| assertEquals(c.bbb(new Double(0.01)), 55); |
| assertEquals(c.bbb(new String("")), 66); |
| } |
| // Test to ensure that the inference verifier accepts older classfiles |
| // with classes that implement interfaces with defaults. |
| void testInferenceVerifier() { |
| // interface I { int m() default { return 99; } } |
| byte I_bytes[] = { |
| (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x34, |
| 0x00, 0x08, 0x07, 0x00, 0x06, 0x07, 0x00, 0x07, |
| 0x01, 0x00, 0x03, 0x66, 0x6f, 0x6f, 0x01, 0x00, |
| 0x03, 0x28, 0x29, 0x49, 0x01, 0x00, 0x04, 0x43, |
| 0x6f, 0x64, 0x65, 0x01, 0x00, 0x01, 0x49, 0x01, |
| 0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, |
| 0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65, |
| 0x63, 0x74, 0x06, 0x00, 0x00, 0x01, 0x00, 0x02, |
| 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x01, |
| 0x00, 0x03, 0x00, 0x04, 0x00, 0x01, 0x00, 0x05, |
| 0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x00, 0x01, |
| 0x00, 0x00, 0x00, 0x03, 0x10, 0x63, (byte)0xac, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| // public class C implements I {} /* -target 1.5 */ |
| byte C_bytes[] = { |
| (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x31, |
| 0x00, 0x0c, 0x0a, 0x00, 0x03, 0x00, 0x08, 0x07, |
| 0x00, 0x09, 0x07, 0x00, 0x0a, 0x07, 0x00, 0x0b, |
| 0x01, 0x00, 0x06, 0x3c, 0x69, 0x6e, 0x69, 0x74, |
| 0x3e, 0x01, 0x00, 0x03, 0x28, 0x29, 0x56, 0x01, |
| 0x00, 0x04, 0x43, 0x6f, 0x64, 0x65, 0x0c, 0x00, |
| 0x05, 0x00, 0x06, 0x01, 0x00, 0x01, 0x43, 0x01, |
| 0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c, |
| 0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65, |
| 0x63, 0x74, 0x01, 0x00, 0x01, 0x49, 0x00, 0x21, |
| 0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x04, |
| 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x05, |
| 0x00, 0x06, 0x00, 0x01, 0x00, 0x07, 0x00, 0x00, |
| 0x00, 0x11, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00, |
| 0x00, 0x05, 0x2a, (byte)0xb7, 0x00, 0x01, (byte)0xb1, 0x00, |
| 0x00, 0x00, 0x00, 0x00, 0x00 |
| }; |
| |
| ClassLoader cl = new ClassLoader() { |
| protected Class<?> findClass(String name) { |
| if (name.equals("I")) { |
| return defineClass("I", I_bytes, 0, I_bytes.length); |
| } else if (name.equals("C")) { |
| return defineClass("C", C_bytes, 0, C_bytes.length); |
| } else { |
| return null; |
| } |
| } |
| }; |
| try { |
| Class.forName("C", true, cl); |
| } catch (Exception e) { |
| // unmodified verifier will throw VerifyError |
| throw new RuntimeException(e); |
| } |
| } |
| void assertEquals(Object o1, Object o2) { |
| System.out.print("Expected: " + o1); |
| System.out.println(", Obtained: " + o2); |
| if (!o1.equals(o2)) { |
| throw new RuntimeException("got unexpected values"); |
| } |
| } |
| } |