1/*
2 * Copyright (c) 2011, 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 */
23
24/**
25 * @test
26 * @bug 7041100
27 * @summary The load in String.equals intrinsic executed before null check
28 *
29 * @run main/othervm -Xbatch compiler.c2.Test7041100 abc def
30 */
31
32package compiler.c2;
33
34public class Test7041100 {
35
36    static String n = null;
37    public static void main(String[] args) throws Exception {
38        for (int i = 0; i < 10000; i++) {
39            stringEQ(args[0], args[1]);
40            stringEQ(args[0], args[0]);
41            stringEQ(args[0], n);
42            stringEQ(n, args[0]);
43        }
44    }
45
46    public static boolean stringEQ(String a, String b) {
47        if (a == b)
48            return true;
49        if (a == null || b == null)
50            return false;
51        else
52            return a.equals(b);
53    }
54}
55