DeadCode5.java revision 553:9d9f26857129
1183242Ssam/*
2183242Ssam * Copyright (c) 1999, Oracle and/or its affiliates. All rights reserved.
3183242Ssam * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4183242Ssam *
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 */
23
24/*
25 * @test
26 * @bug 4136312 4073244
27 * @summary init:  Verify that overzealous dead-code elimination no
28 * longer removes live code.
29 * @author dps
30 *
31 * @run clean DeadCode5
32 * @run compile -O DeadCode5.java
33 * @run main DeadCode5
34 */
35
36
37// Test for bug 4136312
38
39public class DeadCode5
40{
41    int fld;
42
43    static public void main(String args[]) {
44        DeadCode5 t = null;
45        try {
46            int dummy = t.fld;
47            // if we got here, then there must be a problem
48            throw new RuntimeException("accidental removal of live code");
49        } catch (NullPointerException e) {
50            System.out.println("NullPointerException correctly thrown");
51            e.printStackTrace();
52        }
53    }
54}
55