Fri, 10 Dec 2010 15:24:17 +0000
6199075: Unambiguous varargs method calls flagged as ambiguous
Summary: javac does not implement overload resolution w.r.t. varargs methods as described in the JLS
Reviewed-by: jjg
1 /*
2 * Copyright (c) 2003, 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 */
24 /*
25 * @test
26 * @bug 4915435
27 * @summary NullPointerError in Resolve.findMethod() with foreach vs generics
28 * @author gafter
29 */
31 import java.util.List;
32 import java.util.ArrayList;
34 public class ListOfListTest {
36 public static void main(String[] argv) {
37 List<List<Integer>> ll = new ArrayList<List<Integer>>();
38 List<Integer> il = new ArrayList<Integer>();
39 ll.add(il);
40 il.add(1);
41 int sum = 0;
42 for (Integer i : ll.get(0)) {
43 sum = identity(sum) + i;
44 }
46 if (sum != 1) throw new Error(""+sum);
48 enumsToo();
49 }
51 static int identity(Integer i) {
52 switch (i) {
53 case 0: return 0;
54 default: return i;
55 }
56 }
58 enum E { a, b, c, d, e };
60 static class Box<T> {
61 Box(T t) { this.t = t; }
62 T t;
63 T get() { return t; }
64 }
66 static void enumsToo() {
67 Box<E> box = new Box<E>(E.c);
68 switch (box.get()) {
69 case a: throw new Error();
70 case c: break;
71 default: throw new Error();
72 }
73 Box<Integer> boxi = new Box<Integer>(12);
74 switch (boxi.get()) {
75 case 0: throw new Error();
76 case 12: break;
77 default: throw new Error();
78 }
79 }
80 }