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  */

    23 

    24 /*

    25  * @test

    26  * @bug 6695379

    27  * @summary Copy method annotations and parameter annotations to synthetic

    28  * bridge methods

    29  * @run main AnnotationsAreNotCopiedToBridgeMethodsTest

    30  */

    31 

    32 import java.lang.annotation.ElementType;

    33 import java.lang.annotation.Target;

    34 import java.io.BufferedInputStream;

    35 import java.lang.annotation.Retention;

    36 import java.lang.annotation.RetentionPolicy;

    37 import java.nio.file.Files;

    38 import java.nio.file.Path;

    39 import java.nio.file.Paths;

    40 

    41 import com.sun.tools.classfile.AccessFlags;

    42 import com.sun.tools.classfile.Attribute;

    43 import com.sun.tools.classfile.Attributes;

    44 import com.sun.tools.classfile.ClassFile;

    45 import com.sun.tools.classfile.Method;

    46 import com.sun.tools.javac.util.Assert;

    47 

    48 public class AnnotationsAreNotCopiedToBridgeMethodsTest {

    49 

    50     public static void main(String[] args) throws Exception {

    51         new AnnotationsAreNotCopiedToBridgeMethodsTest().run();

    52     }

    53 

    54     void run() throws Exception {

    55         checkClassFile(Paths.get(System.getProperty("test.classes"),

    56                 this.getClass().getSimpleName() + "$CovariantReturnType.class"));

    57         checkClassFile(Paths.get(System.getProperty("test.classes"),

    58                 this.getClass().getSimpleName() +

    59                 "$CovariantReturnType$VisibilityChange.class"));

    60     }

    61 

    62     void checkClassFile(final Path cfilePath) throws Exception {

    63         ClassFile classFile = ClassFile.read(

    64                 new BufferedInputStream(Files.newInputStream(cfilePath)));

    65         for (Method method : classFile.methods) {

    66             if (method.access_flags.is(AccessFlags.ACC_BRIDGE)) {

    67                 checkForAttr(method.attributes,

    68                         "Annotations hasn't been copied to bridge method",

    69                         Attribute.RuntimeVisibleAnnotations,

    70                         Attribute.RuntimeVisibleParameterAnnotations);

    71             }

    72         }

    73     }

    74 

    75     void checkForAttr(Attributes attrs, String errorMsg, String... attrNames) {

    76         for (String attrName : attrNames) {

    77             Assert.checkNonNull(attrs.get(attrName), errorMsg);

    78         }

    79     }

    80 

    81     @Target(value = {ElementType.PARAMETER})

    82     @Retention(RetentionPolicy.RUNTIME)

    83     @interface ParamAnnotation {}

    84 

    85     @Target(value = {ElementType.METHOD})

    86     @Retention(RetentionPolicy.RUNTIME)

    87     @interface MethodAnnotation {}

    88 

    89     abstract class T<A,B> {

    90         B m(A a){return null;}

    91     }

    92 

    93     class CovariantReturnType extends T<Integer, Integer> {

    94         @MethodAnnotation

    95         Integer m(@ParamAnnotation Integer i) {

    96             return i;

    97         }

    98 

    99         public class VisibilityChange extends CovariantReturnType {}

   100 

   101     }

   102 

   103 }