Tue, 01 Sep 2009 14:53:39 +0100
6650759: Inference of formal type parameter (unused in formal parameters) is not performed
Summary: propagate inference constraints from 15.12.2.7 to 15.12.2.8
Reviewed-by: jjg
1 /*
2 * Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
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7 * published by the Free Software Foundation.
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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
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
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22 */
24 /*
25 * @test
26 * @bug 6650759
27 * @summary Inference of formal type parameter (unused in formal parameters) is not performed
28 * @compile/fail/ref=T6650759m.out T6650759m.java -XDrawDiagnostics
29 */
31 import java.util.*;
33 class T6650759m {
34 <Z> List<? super Z> m(List<? extends List<? super Z>> ls) {
35 return ls.get(0);
36 }
38 void test() {
39 ArrayList<ArrayList<Integer>> lli = new ArrayList<ArrayList<Integer>>();
40 ArrayList<Integer> li = new ArrayList<Integer>();
41 li.add(2);
42 lli.add(li);
43 List<? super String> ls = m(lli); //here
44 ls.add("crash");
45 Integer i = li.get(1);
46 }
47 }