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 8026365
  27  * @summary Test invokespecial of host class method from an anonymous class
  28  * @author  Robert Field
  29  * @library /testlibrary
  30  * @compile -XDignore.symbol.file InvokeSpecialAnonTest.java
  31  * @run main ClassFileInstaller InvokeSpecialAnonTest AnonTester
  32  * @run main/othervm -Xbootclasspath/a:. -Xverify:all InvokeSpecialAnonTest
  33  */
  34 import jdk.internal.org.objectweb.asm.*;
  35 import java.lang.reflect.Constructor;
  36 import sun.misc.Unsafe;
  37 
  38 public class InvokeSpecialAnonTest implements Opcodes {
  39 
  40     static byte[] anonClassBytes() throws Exception {
  41         ClassWriter cw = new ClassWriter(0);
  42         MethodVisitor mv;
  43 
  44         cw.visit(V1_8, ACC_FINAL + ACC_SUPER, "Anon", null, "java/lang/Object", null);
  45 
  46         {
  47             mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
  48             mv.visitCode();
  49             mv.visitVarInsn(ALOAD, 0);
  50             mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
  51             mv.visitInsn(RETURN);
  52             mv.visitMaxs(2, 2);
  53             mv.visitEnd();
  54         }
  55         {
  56             mv = cw.visitMethod(ACC_PUBLIC, "m", "(LInvokeSpecialAnonTest;)I", null, null);
  57             mv.visitCode();
  58             mv.visitVarInsn(ALOAD, 0);
  59             mv.visitVarInsn(ALOAD, 1);
  60             mv.visitMethodInsn(INVOKESPECIAL, "InvokeSpecialAnonTest", "privMethod", "()I");
  61             mv.visitInsn(IRETURN);
  62             mv.visitMaxs(2, 3);
  63             mv.visitEnd();
  64         }
  65         cw.visitEnd();
  66 
  67         return cw.toByteArray();
  68     }
  69     
  70     private int privMethod() { return 1234; }
  71     
  72     public static void main(String[] args) throws Exception {
  73         Class<?> klass = InvokeSpecialAnonTest.class;
  74         try {
  75            Class<?> result = AnonTester.defineTest(klass, anonClassBytes());
  76            System.out.println("Passed.");
  77         } catch (Exception e) {
  78            e.printStackTrace();
  79            throw e;
  80         }
  81     }
  82 }
  83 
  84 
  85 class AnonTester {
  86     private static final Unsafe UNSAFE = Unsafe.getUnsafe();
  87 
  88     public static Class<?> defineTest(Class<?> targetClass, byte[] classBytes) throws Exception {
  89         return UNSAFE.defineAnonymousClass(targetClass, classBytes, null);
  90     }
  91 }