1 /*

     2  * Copyright (c) 2017, 2018, 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 8174962 8010319

    27  * @summary Redefine class with interface method call

    28  * @library /test/lib

    29  * @modules java.base/jdk.internal.misc

    30  * @modules java.compiler

    31  *          java.instrument

    32  *          jdk.jartool/sun.tools.jar

    33  * @run main RedefineClassHelper

    34  * @run main/othervm -javaagent:redefineagent.jar -Xlog:redefine+class+update*=trace RedefineInterfaceCall

    35  */

    36 

    37 import static jdk.test.lib.Asserts.assertEquals;

    38 

    39 interface I1 { default int m() { return 0; } }

    40 interface I2 extends I1 {}

    41 

    42 // package access top-level class to avoid problem with RedefineClassHelper

    43 // and nested types.

    44 class RedefineInterfaceCall_C implements I2 {

    45     public int test(I2 i) {

    46         return i.m(); // invokeinterface cpCacheEntry

    47     }

    48 }

    49 

    50 public class RedefineInterfaceCall {

    51 

    52     static String newI1 =

    53       "interface I1 { default int m() { return 1; } }";

    54 

    55     static String newC =

    56         "class RedefineInterfaceCall_C implements I2 { " +

    57         "  public int test(I2 i) { " +

    58         "    return i.m(); " +

    59         "  } " +

    60         "} ";

    61 

    62     static int test(I2 i) {

    63         return i.m(); // invokeinterface cpCacheEntry

    64     }

    65 

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

    67         RedefineInterfaceCall_C c = new RedefineInterfaceCall_C();

    68 

    69         assertEquals(test(c),   0);

    70         assertEquals(c.test(c), 0);

    71 

    72         RedefineClassHelper.redefineClass(RedefineInterfaceCall_C.class, newC);

    73 

    74         assertEquals(c.test(c), 0);

    75 

    76         RedefineClassHelper.redefineClass(I1.class, newI1);

    77 

    78         assertEquals(test(c),   1);

    79         assertEquals(c.test(c), 1);

    80 

    81         RedefineClassHelper.redefineClass(RedefineInterfaceCall_C.class, newC);

    82 

    83         assertEquals(c.test(c), 1);

    84     }

    85 }