T8174249a.java revision 3970:706967704e65 
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.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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24 */
25
26/*
27 * @test
28 * @bug 8174249
29 * @summary Regression in generic method unchecked calls
30 * @compile T8174249a.java
31 */
32
33import java.util.ArrayList;
34import java.util.Collection;
35
36class T8174249a {
37    static <T> T foo(Class<T> c, Collection<? super T> baz) {
38return null;
39    }
40
41    static void bar(String c) { }
42
43    void test() {
44        // this works
45        bar(foo(String.class, new ArrayList<String>()));
46
47        // this works with a warning
48        String s = foo(String.class, new ArrayList());
49        bar(s);
50
51        // this causes an error on JDK9 but should work
52        bar(foo(String.class, new ArrayList()));
53    }
54}
55