Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/CaptureInSubtype.java
test/tools/javac/CaptureInSubtype.java
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- 959103a6100f
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- 2eb010b6cb22
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| 1 /* | |
| 2 * Copyright (c) 2004, 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 5044157 | |
| 27 * @summary type system loophole in wildcard substitution | |
| 28 * @author Gilad Bracha | |
| 29 * | |
| 30 * @compile/fail CaptureInSubtype.java | |
| 31 */ | |
| 32 | |
| 33 import java.util.List; | |
| 34 import java.util.ArrayList; | |
| 35 | |
| 36 public class CaptureInSubtype { | |
| 37 | |
| 38 static class SuperOfFlaw<S>{ | |
| 39 S s; | |
| 40 S get() { return s;} | |
| 41 void put(S a) { s = a;} | |
| 42 | |
| 43 SuperOfFlaw(S a) { s = a;} | |
| 44 } | |
| 45 | |
| 46 static class Flaw<T> extends SuperOfFlaw<List<T>> { | |
| 47 List<T> fetch(){return s;} | |
| 48 | |
| 49 Flaw(T t){super(new ArrayList<T>()); s.add(t);} | |
| 50 } | |
| 51 | |
| 52 static class SuperOfShowFlaw { | |
| 53 | |
| 54 SuperOfFlaw<List<?>> m(){return null;} | |
| 55 } | |
| 56 | |
| 57 | |
| 58 public static class ShowFlaw extends SuperOfShowFlaw { | |
| 59 static Flaw<Number> fn = new Flaw<Number>(new Integer(3)); | |
| 60 | |
| 61 Flaw<?> m(){return fn;} | |
| 62 } | |
| 63 | |
| 64 public static void main(String[] args) { | |
| 65 SuperOfShowFlaw sosf = new ShowFlaw(); | |
| 66 SuperOfFlaw<List<?>> sof = sosf.m(); | |
| 67 List<String> ls = new ArrayList<String>(); | |
| 68 ls.add("Smalltalk rules!"); | |
| 69 sof.put(ls); | |
| 70 Number n = ShowFlaw.fn.get().get(0); | |
| 71 } | |
| 72 | |
| 73 } |
