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 }