1 /*
   2  * Copyright (c) 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  * @test
  26  * @bug 8066900
  27  * @summary FP registers are not properly restored by C1 when handling exceptions
  28  * @run main/othervm -Xbatch SumTest
  29  *
  30  */
  31 public class SumTest {
  32     private static class Sum {
  33 
  34         double[] sums;
  35 
  36         /**
  37          * Construct empty Sum
  38          */
  39         public Sum() {
  40             sums = new double[0];
  41         }
  42 
  43         /**
  44          * Return the sum of all numbers added to this Sum
  45          *
  46          * @return the sum
  47          */
  48         final public double getSum() {
  49             double sum = 0;
  50             for (final double s : sums) {
  51                 sum += s;
  52             }
  53 
  54             return sum;
  55         }
  56 
  57         /**
  58          * Add a new number to this Sum
  59          *
  60          * @param a number to be added.
  61          */
  62         final public void add(double a) {
  63             try {
  64                 sums[sums.length] = -1; // Cause IndexOutOfBoundsException
  65             } catch (final IndexOutOfBoundsException e) {
  66                 final double[] oldSums = sums;
  67                 sums = new double[oldSums.length + 1]; // Extend sums
  68                 System.arraycopy(oldSums, 0, sums, 0, oldSums.length);
  69                 sums[oldSums.length] = a; // Append a
  70             }
  71         }
  72     }
  73 
  74     public static void main(String[] args) throws Exception {
  75         final Sum sum = new Sum();
  76         for (int i = 1; i <= 10000; ++i) {
  77             sum.add(1);
  78             double ii = sum.getSum();
  79             if (i != ii) {
  80                 throw new Exception("Failure: computed = " + ii + ", expected = " + i);
  81             }
  82         }
  83     }
  84 
  85 }
  86