1 /*

     2  * Copyright (c) 2019, 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 8181171

    27  * @summary Break ResolvedMethodTable with redefined nest class.

    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  * @compile ../../NamedBuffer.java

    34  * @compile redef/Xost.java

    35  * @run main RedefineClassHelper

    36  * @run main/othervm -javaagent:redefineagent.jar -Xlog:redefine+class+update*=debug,membername+table=debug MethodHandleDeletedMethod

    37  */

    38 

    39 import java.io.File;

    40 import java.io.FileInputStream;

    41 import java.lang.invoke.*;

    42 

    43 class Host {

    44     static MethodHandle fooMH;

    45 

    46     static class A {

    47         private static void foo() { System.out.println("OLD foo called"); }

    48     }

    49     static void bar() throws NoSuchMethodError {

    50         A.foo();

    51     }

    52     static void barMH() throws Throwable {

    53         fooMH.invokeExact();

    54     }

    55 

    56     public static void reresolve() throws Throwable {

    57         fooMH = MethodHandles.lookup().findStatic(A.class, "foo", MethodType.methodType(void.class));

    58     }

    59 

    60     static {

    61         try {

    62           fooMH = MethodHandles.lookup().findStatic(A.class, "foo", MethodType.methodType(void.class));

    63         } catch (ReflectiveOperationException ex) {

    64         }

    65     }

    66 }

    67 

    68 public class MethodHandleDeletedMethod {

    69 

    70     static final String DEST = System.getProperty("test.classes");

    71     static final boolean VERBOSE = false;

    72 

    73     private static byte[] bytesForHostClass(char replace) throws Throwable {

    74         return NamedBuffer.bytesForHostClass(replace, "Host$A");

    75     }

    76 

    77     public static void main(java.lang.String[] unused) throws Throwable {

    78         Host h = new Host();

    79         h.bar();

    80         h.barMH();

    81         byte[] buf = bytesForHostClass('X');

    82         RedefineClassHelper.redefineClass(Host.A.class, buf);

    83         try {

    84             h.bar();    // call deleted Method directly

    85             throw new RuntimeException("Failed, expected NSME");

    86         } catch (NoSuchMethodError nsme) {

    87             System.out.println("Received expected NSME");

    88         }

    89         try {

    90             h.barMH();  // call through MethodHandle for deleted Method

    91             throw new RuntimeException("Failed, expected NSME");

    92         } catch (NoSuchMethodError nsme) {

    93             System.out.println("Received expected NSME");

    94         }

    95         System.out.println("Passed.");

    96     }

    97 }