1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
/*
* Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 4711570
* @summary generics: problem with methods when type parameter doesn't appear in signature
* @author gafter
*
* @compile T4711570.java
*/
class T4711570 {
public static int fi() {
return fi();
}
public static void gi() {
fi();
gi();
}
public static <T> int f() {
return f();
}
public static <T> void g() {
f(); // incompatible.types found: <T>int required: java.lang.Object
int i = f(); // workaround for f()
g(); // incompatible.types found: <T>void required: java.lang.Object
}
// required type looks strange
public static <T> void h() {
g(); // incompatible.types found: <T>void required: java.lang.Object
}
public static <T> int f(T x) {
return f(x);
}
public static <T> void g(T x) {
f(x);
g(x); // incompatible.types found: <T>void required: java.lang.Object
}
public static <T> void h(T x) {
g(x); // works fine now; why not in void g(T x)?
}
}
|
