1 /*
   2  * Copyright (c) 2020, Azul Systems, Inc. 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 /* @test
  25  * @bug 8239787
  26  * @requires os.arch=="aarch64"
  27  * @summary String.indexOf(char) for empty string must give -1
  28  * @run main/othervm -XX:-CompactStrings StringIndexOfChar
  29  */
  30 public class StringIndexOfChar {
  31     public static void main(String[] args) throws Exception {
  32         String emptyString = "";
  33         for (int i = 0 ; i < 100; i ++) {
  34             for(int c=0; c<0xFFFF; c++) {
  35                 int result = emptyString.indexOf((char)c, -1);
  36                 if (result != -1) {
  37                     throw new Exception("new String(\"\").indexOf(char, -1) must be -1, but got " + result);
  38                 }
  39             }
  40         }
  41     }
  42 }