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, 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 */
24 /*
25 * @test
26 * @bug 4921543 5009601
27 * @summary boxing/unboxing versus foreach crashes javac
28 * @author gafter
29 *
30 * @compile BoxedForeach.java
31 * @run main BoxedForeach
32 */
34 import java.util.*;
36 public class BoxedForeach {
37 static void f(Integer[] a) {
38 for ( int i : a ) {
39 System.out.println(i);
40 }
41 }
42 static void f(Iterable<Integer> b) {
43 g(b);
44 h(b);
45 for ( int i : b ) {
46 System.out.println(i);
47 }
48 for ( float i : b ) {
49 System.out.println(i);
50 }
51 for ( Iterator<Integer> it = b.iterator(); it.hasNext(); ) {
52 float i = it.next();
53 }
54 }
55 static <T extends Integer> void g(Iterable<T> b) {
56 for ( int i : b ) {
57 System.out.println(i);
58 }
59 }
60 static void h(Iterable<? extends Integer> b) {
61 for ( int i : b ) {
62 System.out.println(i);
63 }
64 }
65 static void f(int[] c) {
66 for ( Integer i : c ) {
67 System.out.println(i);
68 }
69 }
70 static <E extends Enum<E>> void f(E[] values) {
71 for ( E e : values ) {
72 System.out.println(e);
73 }
74 }
75 static int f() {
76 for ( Foo f : foolist() ) {
77 return f.x;
78 }
79 return 0;
80 }
81 static List<Foo> foolist() {
82 List<Foo> l = new ArrayList<Foo>();
83 l.add(new Foo());
84 return l;
85 }
86 enum color { red, green, blue };
87 public static void main(String[] args) {
88 Integer[] a1 = { Integer.valueOf(1), Integer.valueOf(2) };
89 f(a1);
90 f(Arrays.asList(a1));
91 int[] a2 = { 1, 2, 3 };
92 f(a2);
93 f(color.values());
94 f();
95 }
96 }
98 class Foo {
99 static int n = 0;
100 final int x;
101 Foo() {
102 x = n++;
103 }
104 }
106 class A {
107 class B {
108 }
109 java.util.List<String> l;
110 String[] args;
111 {
112 for (String s1 : l) {
113 for (String s2 : l) {
114 B b = new B();
115 }
116 }
117 for (String s1 : args) {
118 for (String s2 : args) {
119 B b = new B();
120 }
121 }
122 }
123 }