test/tools/javac/BadOptimization/DeadCode5.java

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1 /*
2 * Copyright 1999 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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
39 public 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 }

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