1 /*

     2  * Copyright (c) 2014, 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 8042785

    27  * @summary javac, bridge methods are not getting the flags from the original method

    28  * @run main FlagsNotCopiedToBridgeMethodTest

    29  */

    30 

    31 import java.io.BufferedInputStream;

    32 import java.nio.file.Files;

    33 import java.nio.file.Path;

    34 import java.nio.file.Paths;

    35 

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

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

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

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

    40 

    41 public class FlagsNotCopiedToBridgeMethodTest {

    42 

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

    44         new FlagsNotCopiedToBridgeMethodTest().run();

    45     }

    46 

    47     void run() throws Exception {

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

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

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

    51                 this.getClass().getSimpleName() +

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

    53     }

    54 

    55     void checkClassFile(final Path cfilePath) throws Exception {

    56         ClassFile classFile = ClassFile.read(

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

    58         for (Method method : classFile.methods) {

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

    60                 Assert.check(method.access_flags.is(AccessFlags.ACC_FINAL | AccessFlags.ACC_STRICT),

    61                         "bridge method has incorrect flags");

    62             }

    63         }

    64     }

    65 

    66     abstract class T<A,B> {

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

    68     }

    69 

    70     class CovariantReturnType extends T<Integer, Integer> {

    71         strictfp final Integer m(Integer i) {

    72             return i;

    73         }

    74 

    75         public class VisibilityChange extends CovariantReturnType {}

    76 

    77     }

    78 

    79 }