1 /* 2 * Copyright (c) 2010, 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 // A simple class to extend an abstract class and get loaded with different 26 // loaders. This class is loaded via LOADER1. A similar named class will 27 // be loaded via LOADER2. 28 public class many_loader extends bug_21227 { 29 public You_Have_Been_P0wned _p0wnee; 30 31 // I need to compile (hence call in a loop) a function which returns a value 32 // loaded from classloader other than the system one. The point of this 33 // call is to give me an abstract 'hook' into a function loaded with a 34 // foreign loader. 35 36 // The original 'make(boolean)' returns a bug_21227. The VM will inject a 37 // synthetic method to up-cast the returned 'from_loader1' into a 38 // 'bug_21227'. 39 public many_loader[] make(IFace iface) { 40 // This function needs to return a value known to be loaded from LOADER2. 41 // Since I need to use a yet different loader, I need to make an unknown 42 // foreign call. In this case I'll be using an interface to make the 43 // unknown call, with but a single implementor so the compiler can do the 44 // upcast statically. 45 return iface==null ? null : iface.gen(); 46 } 47 }