1 /*
   2  * Copyright (c) 2008, 2014, Oracle and/or its affiliates. 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 
  25 /*
  26  * @test
  27  * @bug 6775880
  28  * @summary EA +DeoptimizeALot: assert(mon_info->owner()->is_locked(),"object must be locked now")
  29  *
  30  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xbatch -XX:+DoEscapeAnalysis -XX:+DeoptimizeALot
  31  *    -XX:CompileCommand=exclude,java.lang.AbstractStringBuilder::append
  32  *    compiler.escapeAnalysis.Test6775880
  33  */
  34 
  35 package compiler.escapeAnalysis;
  36 
  37 public class Test6775880 {
  38 
  39     int cnt;
  40     int b[];
  41     String s;
  42 
  43     String test() {
  44         String res = "";
  45         for (int i = 0; i < cnt; i++) {
  46             if (i != 0) {
  47                 res = res + ".";
  48             }
  49             res = res + b[i];
  50         }
  51         return res;
  52     }
  53 
  54     public static void main(String[] args) {
  55         Test6775880 t = new Test6775880();
  56         t.cnt = 3;
  57         t.b = new int[3];
  58         t.b[0] = 0;
  59         t.b[1] = 1;
  60         t.b[2] = 2;
  61         int j = 0;
  62         t.s = "";
  63         for (int i = 0; i < 10001; i++) {
  64             t.s = "c";
  65             t.s = t.test();
  66         }
  67         System.out.println("After s=" + t.s);
  68     }
  69 }
  70 
  71