Wed, 26 Jan 2011 13:45:25 -0800
7013272: Automatically generate info about how compiler resource keys are used
Reviewed-by: mcimadamore
1 /*
2 * Copyright (c) 1999, 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 4057345 4120016 4120014
27 * @summary final void function: Verify that overzealous dead-code elimination
28 * no longer removes live code.
29 * @author dps
30 *
31 * @run clean DeadCode3
32 * @run compile -O DeadCode3.java
33 * @run main DeadCode3
34 */
36 public class DeadCode3
37 {
38 private final void fun1() { }
40 private void fun2() {
41 DeadCode3 r1 = null;
42 fun1();
44 // we expect an NullPointerException because of this line
45 r1.fun1();
46 }
48 public static void main( String[] args ) {
49 try {
50 new DeadCode3() . fun2();
51 // if we got past the constructor, then there must be a problem
52 throw new RuntimeException("accidental removal of live code");
53 } catch (NullPointerException e) {
54 System.out.println("NullPointerException correctly thrown");
55 e.printStackTrace();
56 }
57 }
58 }