1/*
2 * Copyright (c) 2012, 2013, 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 8003639
27 * @summary defaultMethod resolution and verification
28 * @run main DefaultMethodRegressionTests
29 */
30
31import java.util.ArrayList;
32import java.util.Arrays;
33import java.util.List;
34
35/**
36 * This set of classes/interfaces (K/I/C) is specially designed to expose a
37 * bug in the JVM where it did not find some overloaded methods in some
38 * specific situations. (fixed by hotspot changeset ffb9316fd9ed).
39 */
40interface K {
41    int bbb(Long l);
42}
43
44interface I extends K {
45    default void aaa() {}
46    default void aab() {}
47    default void aac() {}
48
49    default int bbb(Integer i) { return 22; }
50    default int bbb(Float f) { return 33; }
51    default int bbb(Long l) { return 44; }
52    default int bbb(Double d) { return 55; }
53    default int bbb(String s) { return 66; }
54
55    default void caa() {}
56    default void cab() {}
57    default void cac() {}
58}
59
60class C implements I {}
61
62public class DefaultMethodRegressionTests {
63    public static void main(String... args) {
64        new DefaultMethodRegressionTests().run(args);
65    }
66    void run(String... args) {
67        testLostOverloadedMethod();
68        System.out.println("testLostOverloadedMethod: OK");
69        testInferenceVerifier();
70        System.out.println("testInferenceVerifier: OK");
71    }
72    void testLostOverloadedMethod() {
73        C c = new C();
74        assertEquals(c.bbb(new Integer(1)), 22);
75        assertEquals(c.bbb(new Float(1.1)), 33);
76        assertEquals(c.bbb(new Long(1L)), 44);
77        assertEquals(c.bbb(new Double(0.01)), 55);
78        assertEquals(c.bbb(new String("")), 66);
79    }
80    // Test to ensure that the inference verifier accepts older classfiles
81    // with classes that implement interfaces with defaults.
82    void testInferenceVerifier() {
83        // interface I { int m() default { return 99; } }
84        byte I_bytes[] = {
85            (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x34,
86            0x00, 0x08, 0x07, 0x00, 0x06, 0x07, 0x00, 0x07,
87            0x01, 0x00, 0x03, 0x66, 0x6f, 0x6f, 0x01, 0x00,
88            0x03, 0x28, 0x29, 0x49, 0x01, 0x00, 0x04, 0x43,
89            0x6f, 0x64, 0x65, 0x01, 0x00, 0x01, 0x49, 0x01,
90            0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c,
91            0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65,
92            0x63, 0x74, 0x06, 0x00, 0x00, 0x01, 0x00, 0x02,
93            0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x02, 0x01,
94            0x00, 0x03, 0x00, 0x04, 0x00, 0x01, 0x00, 0x05,
95            0x00, 0x00, 0x00, 0x0f, 0x00, 0x01, 0x00, 0x01,
96            0x00, 0x00, 0x00, 0x03, 0x10, 0x63, (byte)0xac, 0x00,
97            0x00, 0x00, 0x00, 0x00, 0x00
98        };
99        // public class C implements I {}  /* -target 1.5 */
100        byte C_bytes[] = {
101            (byte)0xca, (byte)0xfe, (byte)0xba, (byte)0xbe, 0x00, 0x00, 0x00, 0x31,
102            0x00, 0x0c, 0x0a, 0x00, 0x03, 0x00, 0x08, 0x07,
103            0x00, 0x09, 0x07, 0x00, 0x0a, 0x07, 0x00, 0x0b,
104            0x01, 0x00, 0x06, 0x3c, 0x69, 0x6e, 0x69, 0x74,
105            0x3e, 0x01, 0x00, 0x03, 0x28, 0x29, 0x56, 0x01,
106            0x00, 0x04, 0x43, 0x6f, 0x64, 0x65, 0x0c, 0x00,
107            0x05, 0x00, 0x06, 0x01, 0x00, 0x01, 0x43, 0x01,
108            0x00, 0x10, 0x6a, 0x61, 0x76, 0x61, 0x2f, 0x6c,
109            0x61, 0x6e, 0x67, 0x2f, 0x4f, 0x62, 0x6a, 0x65,
110            0x63, 0x74, 0x01, 0x00, 0x01, 0x49, 0x00, 0x21,
111            0x00, 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x04,
112            0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x00, 0x05,
113            0x00, 0x06, 0x00, 0x01, 0x00, 0x07, 0x00, 0x00,
114            0x00, 0x11, 0x00, 0x01, 0x00, 0x01, 0x00, 0x00,
115            0x00, 0x05, 0x2a, (byte)0xb7, 0x00, 0x01, (byte)0xb1, 0x00,
116            0x00, 0x00, 0x00, 0x00, 0x00
117        };
118
119        ClassLoader cl = new ClassLoader() {
120            protected Class<?> findClass(String name) {
121                if (name.equals("I")) {
122                    return defineClass("I", I_bytes, 0, I_bytes.length);
123                } else if (name.equals("C")) {
124                    return defineClass("C", C_bytes, 0, C_bytes.length);
125                } else {
126                    return null;
127                }
128            }
129        };
130        try {
131            Class.forName("C", true, cl);
132        } catch (Exception e) {
133            // unmodified verifier will throw VerifyError
134            throw new RuntimeException(e);
135        }
136    }
137    void assertEquals(Object o1, Object o2) {
138        System.out.print("Expected: " + o1);
139        System.out.println(", Obtained: " + o2);
140        if (!o1.equals(o2)) {
141            throw new RuntimeException("got unexpected values");
142        }
143    }
144}
145