1 /* 2 * Copyright (c) 2017, 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 // We compile two versions of the nested StaticIface which contains a call 25 // to a private interface method. Both versions are compiled to use 26 // invokeinterface, but one is modified to declare a lower classfile version, 27 // which makes the use of invokeinterface illegal in that context. 28 // We run the test twice, each time using a different version of the 29 // StaticIface class. 30 31 /* 32 * @test 33 * @bug 8046171 34 * @summary Test use of invokeinterface versus invokespecial for private 35 * interface method invocation 36 * @compile TestInvokeInterface.java 37 * @compile StaticIfaceGood.jcod 38 * @run main TestInvokeInterface pass 39 * @compile StaticIfaceError.jcod 40 * @run main TestInvokeInterface fail 41 */ 42 43 public class TestInvokeInterface { 44 45 static interface StaticIface { 46 47 private void priv_invoke() { 48 System.out.println("StaticIface::priv_invoke"); 49 } 50 51 default void access_priv(StaticIface o) { 52 o.priv_invoke(); 53 } 54 } 55 56 public static void main(String[] args) { 57 boolean shouldFail = args[0].equals("fail"); 58 String icce = "IncompatibleClassChangeError: private interface method requires invokespecial"; 59 StaticIface intf = new StaticIface() {}; 60 try { 61 intf.access_priv(new StaticIface(){}); 62 if (shouldFail) 63 throw new Error("Do not get expected exception: " + icce); 64 else 65 System.out.println("Invocation succeeded as expected"); 66 } 67 catch (IncompatibleClassChangeError e) { 68 if (shouldFail && e.toString().contains(icce)) 69 System.out.println("Got expected exception: " + e); 70 else 71 throw new Error("Unexpected cause of exception: " + e); 72 } 73 } 74 }