1 /*
   2  * Copyright (c) 2011, 2016, 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 7103261
  28  * @summary crash with jittester on sparc
  29  *
  30  * @run main Test7103261
  31  */
  32 
  33 // exercise implicit null checking in the compiler for various field types
  34 public class Test7103261 {
  35     static Test7103261 null_value;
  36     static Test7103261 nonnull_value = new Test7103261();
  37     static Test7103261 nonnull_value2 = new Test7103261();
  38 
  39     long l;
  40     int i;
  41     float f;
  42     double d;
  43     byte b;
  44     char c;
  45     short s;
  46     boolean z;
  47     Object o;
  48 
  49     public static void main(String[] args) {
  50         constantStore();
  51         valueTest(false);
  52         valueTest(true);
  53     }
  54     static void constantStore() {
  55         for (int field = 0; field < 9; field++) {
  56             try {
  57                 Test7103261 o = nonnull_value;
  58                 for (int i = 0; i < 100000; i++) {
  59                     switch (field) {
  60                     case 0: o.l = 0; break;
  61                     case 1: o.i = 0; break;
  62                     case 2: o.f = 0; break;
  63                     case 3: o.d = 0; break;
  64                     case 4: o.b = 0; break;
  65                     case 5: o.c = 0; break;
  66                     case 6: o.s = 0; break;
  67                     case 7: o.z = false; break;
  68                     case 8: o.o = null; break;
  69                     default: throw new InternalError();
  70                     }
  71                     if (i == 90000) {
  72                         // hide nullness from optimizer
  73                         o = null_value;
  74                     }
  75                 }
  76             } catch (NullPointerException npe) {
  77             }
  78         }
  79     }
  80     static void valueTest(boolean store) {
  81         for (int field = 0; field < 9; field++) {
  82             try {
  83                 Test7103261 o  = nonnull_value;
  84                 Test7103261 o2 = nonnull_value2;
  85                 for (int i = 0; i < 100000; i++) {
  86                     switch (field) {
  87                     case 0: o.l = o2.l; break;
  88                     case 1: o.i = o2.i; break;
  89                     case 2: o.f = o2.f; break;
  90                     case 3: o.d = o2.d; break;
  91                     case 4: o.b = o2.b; break;
  92                     case 5: o.c = o2.c; break;
  93                     case 6: o.s = o2.s; break;
  94                     case 7: o.z = o2.z; break;
  95                     case 8: o.o = o2.o; break;
  96                     default: throw new InternalError();
  97                     }
  98                     if (i == 90000) {
  99                         // hide nullness from optimizer
 100                         if (store)
 101                             o = null_value;
 102                         else
 103                             o2 = null_value;
 104                     }
 105                 }
 106             } catch (NullPointerException npe) {
 107             }
 108         }
 109     }
 110 }