1/*
2 * Copyright (c) 2013, 2015, 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 6695379
27 * @summary Copy method annotations and parameter annotations to synthetic
28 * bridge methods
29 * @modules jdk.jdeps/com.sun.tools.classfile
30 *          jdk.compiler/com.sun.tools.javac.util
31 * @run main AnnotationsAreNotCopiedToBridgeMethodsTest
32 */
33
34import java.lang.annotation.ElementType;
35import java.lang.annotation.Target;
36import java.io.BufferedInputStream;
37import java.lang.annotation.Retention;
38import java.lang.annotation.RetentionPolicy;
39import java.nio.file.Files;
40import java.nio.file.Path;
41import java.nio.file.Paths;
42
43import com.sun.tools.classfile.AccessFlags;
44import com.sun.tools.classfile.Attribute;
45import com.sun.tools.classfile.Attributes;
46import com.sun.tools.classfile.ClassFile;
47import com.sun.tools.classfile.Method;
48import com.sun.tools.javac.util.Assert;
49
50public class AnnotationsAreNotCopiedToBridgeMethodsTest {
51
52    public static void main(String[] args) throws Exception {
53        new AnnotationsAreNotCopiedToBridgeMethodsTest().run();
54    }
55
56    void run() throws Exception {
57        checkClassFile(Paths.get(System.getProperty("test.classes"),
58                this.getClass().getSimpleName() + "$CovariantReturnType.class"));
59        checkClassFile(Paths.get(System.getProperty("test.classes"),
60                this.getClass().getSimpleName() +
61                "$CovariantReturnType$VisibilityChange.class"));
62    }
63
64    void checkClassFile(final Path cfilePath) throws Exception {
65        ClassFile classFile = ClassFile.read(
66                new BufferedInputStream(Files.newInputStream(cfilePath)));
67        for (Method method : classFile.methods) {
68            if (method.access_flags.is(AccessFlags.ACC_BRIDGE)) {
69                checkForAttr(method.attributes,
70                        "Annotations hasn't been copied to bridge method",
71                        Attribute.RuntimeVisibleAnnotations,
72                        Attribute.RuntimeVisibleParameterAnnotations);
73            }
74        }
75    }
76
77    void checkForAttr(Attributes attrs, String errorMsg, String... attrNames) {
78        for (String attrName : attrNames) {
79            Assert.checkNonNull(attrs.get(attrName), errorMsg);
80        }
81    }
82
83    @Target(value = {ElementType.PARAMETER})
84    @Retention(RetentionPolicy.RUNTIME)
85    @interface ParamAnnotation {}
86
87    @Target(value = {ElementType.METHOD})
88    @Retention(RetentionPolicy.RUNTIME)
89    @interface MethodAnnotation {}
90
91    abstract class T<A,B> {
92        B m(A a){return null;}
93    }
94
95    class CovariantReturnType extends T<Integer, Integer> {
96        @MethodAnnotation
97        Integer m(@ParamAnnotation Integer i) {
98            return i;
99        }
100
101        public class VisibilityChange extends CovariantReturnType {}
102
103    }
104
105}
106