Mon, 14 Oct 2013 23:07:43 -0700
8025998: Missing LV table in lambda bodies
Reviewed-by: vromero
1 /*
2 * Copyright (c) 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 */
24 /*
25 * @test
26 * @bug 8012557
27 * @summary Check that 8012557 is fixed, that interface lambda
28 * methods are private
29 * @author Robert Field
30 * @compile SAM.java
31 * @compile A.java
32 * @compile B.java
33 * @compile C.java
34 * @run main PrivateLambdas
35 *
36 * Unless the lambda methods are private, this will fail with:
37 * AbstractMethodError:
38 * Conflicting default methods: A.lambda$0 B.lambda$0 C.lambda$0
39 */
41 import java.lang.reflect.Method;
42 import java.lang.reflect.Modifier;
44 interface X extends A, B, C {
45 default String u() { return " "; }
46 default String name() {
47 return A.super.name() + B.super.name() + C.super.name();
48 }
49 }
51 public class PrivateLambdas implements X {
52 public static void main(String[] args) throws Exception {
54 // Check that all the lambda methods are private instance synthetic
55 for (Class<?> k : new Class<?>[] { A.class, B.class, C.class }) {
56 Method[] methods = k.getDeclaredMethods();
57 int lambdaCount = 0;
58 for(Method m : methods) {
59 if (m.getName().startsWith("lambda$")) {
60 ++lambdaCount;
61 int mod = m.getModifiers();
62 if ((mod & Modifier.PRIVATE) == 0) {
63 throw new Exception("Expected " + m + " to be private");
64 }
65 if (!m.isSynthetic()) {
66 throw new Exception("Expected " + m + " to be synthetic");
67 }
68 if ((mod & Modifier.STATIC) != 0) {
69 throw new Exception("Expected " + m + " to be instance method");
70 }
71 }
72 }
73 if (lambdaCount == 0) {
74 throw new Exception("Expected at least one lambda method");
75 }
76 }
78 /*
79 * Unless the lambda methods are private, this will fail with:
80 * AbstractMethodError:
81 * Conflicting default methods: A.lambda$0 B.lambda$0 C.lambda$0
82 */
83 X x = new PrivateLambdas();
84 if (!x.name().equals(" A B C")) {
85 throw new Exception("Expected ' A B C' got: " + x.name());
86 }
87 }
88 }