1 /*
   2  * Copyright (c) 2002, 2017 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  * @test TestStackOverflow
  26  * @key gc
  27  * @bug 4396719
  28  * @summary Checks for Mark Sweep stack overflow on deeply nested Object arrays  
  29  * @run main/othervm TestStackOverflow
  30  */
  31 
  32 import java.io.*;
  33 
  34 public class TestStackOverflow {
  35     final static int LOOP_LENGTH = 1000000;
  36     final static int LOGGING_STEP = 10000;
  37 
  38     public static void main(String args[]) {
  39         run(args, System.out);
  40     }
  41 
  42     public static int run(String args[], PrintStream out) {
  43         Object object = null;
  44 
  45         for (int i = 0; i < LOOP_LENGTH; i++) {
  46 
  47             // Check progress
  48             if (i % LOGGING_STEP == 0) {
  49                 out.println(i);
  50             }
  51             try {
  52                 Object array[] = {object, object, object, object, object};
  53                 object = array;
  54             } catch (OutOfMemoryError e) {
  55                 object = null;
  56                 out.println("Caught OutOfMemoryError.");
  57                 return 0;
  58             } catch (StackOverflowError e) {
  59                 object = null;
  60                 out.println("Caught StackOverflowError.");
  61                 return 0;
  62             }
  63         }
  64         return 0;
  65     }
  66 }
  67