Wed, 21 May 2014 10:56:41 -0700
Added tag jdk8u20-b15 for changeset 8c785f9bde6f
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
aoqi@0 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
aoqi@0 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
aoqi@0 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
aoqi@0 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | * |
aoqi@0 | 23 | */ |
aoqi@0 | 24 | |
aoqi@0 | 25 | /** |
aoqi@0 | 26 | * @test |
aoqi@0 | 27 | * @bug 7041100 |
aoqi@0 | 28 | * @summary The load in String.equals intrinsic executed before null check |
aoqi@0 | 29 | * |
aoqi@0 | 30 | * @run main/othervm -Xbatch Test7041100 abc def |
aoqi@0 | 31 | */ |
aoqi@0 | 32 | |
aoqi@0 | 33 | public class Test7041100 { |
aoqi@0 | 34 | |
aoqi@0 | 35 | static String n = null; |
aoqi@0 | 36 | public static void main(String[] args) throws Exception { |
aoqi@0 | 37 | for (int i = 0; i < 10000; i++) { |
aoqi@0 | 38 | stringEQ(args[0], args[1]); |
aoqi@0 | 39 | stringEQ(args[0], args[0]); |
aoqi@0 | 40 | stringEQ(args[0], n); |
aoqi@0 | 41 | stringEQ(n, args[0]); |
aoqi@0 | 42 | } |
aoqi@0 | 43 | } |
aoqi@0 | 44 | |
aoqi@0 | 45 | public static boolean stringEQ(String a, String b) { |
aoqi@0 | 46 | if (a == b) |
aoqi@0 | 47 | return true; |
aoqi@0 | 48 | if (a == null || b == null) |
aoqi@0 | 49 | return false; |
aoqi@0 | 50 | else |
aoqi@0 | 51 | return a.equals(b); |
aoqi@0 | 52 | } |
aoqi@0 | 53 | } |