1 /*

     2  * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

     3  * Copyright (c) 2019, Arm Limited. All rights reserved.

     4  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     5  *

     6  * This code is free software; you can redistribute it and/or modify it

     7  * under the terms of the GNU General Public License version 2 only, as

     8  * published by the Free Software Foundation.

     9  *

    10  * This code is distributed in the hope that it will be useful, but WITHOUT

    11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    13  * version 2 for more details (a copy is included in the LICENSE file that

    14  * accompanied this code).

    15  *

    16  * You should have received a copy of the GNU General Public License version

    17  * 2 along with this work; if not, write to the Free Software Foundation,

    18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    19  *

    20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    21  * or visit www.oracle.com if you need additional information or have any

    22  * questions.

    23  */

    24 

    25 /*

    26  * @test

    27  * @bug 8215792

    28  * @summary Fix a bug in AArch64 string intrinsics

    29  *

    30  * @run main/othervm compiler.intrinsics.Test8215792

    31  * @run main/othervm -XX:-CompactStrings compiler.intrinsics.Test8215792

    32  */

    33 

    34 package compiler.intrinsics;

    35 

    36 public class Test8215792 {

    37 

    38     private static final int ITERATIONS = 10000;

    39     private static final String pattern = "01234567890123456789";

    40 

    41     public static void main(String[] args) {

    42 

    43         // Repeat many times to trigger compilation

    44         for (int iter = 0; iter < ITERATIONS; iter++) {

    45             StringBuilder str1 = new StringBuilder("ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789");

    46             StringBuilder str2 = new StringBuilder("\u4f60\u598dCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789");

    47 

    48             for (int i = 0; i < 20; i++) {

    49                 // Remove one character from the tail

    50                 str1.setLength(str1.length() - 1);

    51                 str2.setLength(str2.length() - 1);

    52                 // Pattern string should not be found after characters removed from the tail

    53                 if (str1.indexOf(pattern) != -1 || str2.indexOf(pattern) != -1) {

    54                     System.out.println("FAILED");

    55                     System.exit(1);

    56                 }

    57             }

    58         }

    59         System.out.println("PASSED");

    60     }

    61 }

    62