1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/compiler/7041100/Test7041100.java Tue May 03 09:10:39 2011 -0700
1.3 @@ -0,0 +1,53 @@
1.4 +/*
1.5 + * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + *
1.26 + */
1.27 +
1.28 +/**
1.29 + * @test
1.30 + * @bug 7041100
1.31 + * @summary The load in String.equals intrinsic executed before null check
1.32 + *
1.33 + * @run main/othervm -Xbatch Test7041100 abc def
1.34 + */
1.35 +
1.36 +public class Test7041100 {
1.37 +
1.38 + static String n = null;
1.39 + public static void main(String[] args) throws Exception {
1.40 + for (int i = 0; i < 10000; i++) {
1.41 + stringEQ(args[0], args[1]);
1.42 + stringEQ(args[0], args[0]);
1.43 + stringEQ(args[0], n);
1.44 + stringEQ(n, args[0]);
1.45 + }
1.46 + }
1.47 +
1.48 + public static boolean stringEQ(String a, String b) {
1.49 + if (a == b)
1.50 + return true;
1.51 + if (a == null || b == null)
1.52 + return false;
1.53 + else
1.54 + return a.equals(b);
1.55 + }
1.56 +}
