jdk

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/*
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 * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
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 * Copyright (c) 2019, Arm Limited. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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/*
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 * @test
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 * @bug 8215792
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 * @summary Fix a bug in AArch64 string intrinsics
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 *
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 * @run main/othervm compiler.intrinsics.Test8215792
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 * @run main/othervm -XX:-CompactStrings compiler.intrinsics.Test8215792
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 */
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package compiler.intrinsics;
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public class Test8215792 {
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    private static final int ITERATIONS = 10000;
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    private static final String pattern = "01234567890123456789";
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    public static void main(String[] args) {
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        // Repeat many times to trigger compilation
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        for (int iter = 0; iter < ITERATIONS; iter++) {
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            StringBuilder str1 = new StringBuilder("ABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789");
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            StringBuilder str2 = new StringBuilder("\u4f60\u598dCDEFGHIJKLMNOPQRSTUVWXYZ01234567890123456789");
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            for (int i = 0; i < 20; i++) {
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                // Remove one character from the tail
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                str1.setLength(str1.length() - 1);
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                str2.setLength(str2.length() - 1);
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                // Pattern string should not be found after characters removed from the tail
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                if (str1.indexOf(pattern) != -1 || str2.indexOf(pattern) != -1) {
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                    System.out.println("FAILED");
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                    System.exit(1);
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                }
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            }
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        }
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        System.out.println("PASSED");
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    }
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}
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