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 compiler.c1.Test7103261

    31  */

    32 

    33 package compiler.c1;

    34 

    35 // exercise implicit null checking in the compiler for various field types

    36 public class Test7103261 {

    37     static Test7103261 null_value;

    38     static Test7103261 nonnull_value = new Test7103261();

    39     static Test7103261 nonnull_value2 = new Test7103261();

    40 

    41     long l;

    42     int i;

    43     float f;

    44     double d;

    45     byte b;

    46     char c;

    47     short s;

    48     boolean z;

    49     Object o;

    50 

    51     public static void main(String[] args) {

    52         constantStore();

    53         valueTest(false);

    54         valueTest(true);

    55     }

    56     static void constantStore() {

    57         for (int field = 0; field < 9; field++) {

    58             try {

    59                 Test7103261 o = nonnull_value;

    60                 for (int i = 0; i < 100000; i++) {

    61                     switch (field) {

    62                     case 0: o.l = 0; break;

    63                     case 1: o.i = 0; break;

    64                     case 2: o.f = 0; break;

    65                     case 3: o.d = 0; break;

    66                     case 4: o.b = 0; break;

    67                     case 5: o.c = 0; break;

    68                     case 6: o.s = 0; break;

    69                     case 7: o.z = false; break;

    70                     case 8: o.o = null; break;

    71                     default: throw new InternalError();

    72                     }

    73                     if (i == 90000) {

    74                         // hide nullness from optimizer

    75                         o = null_value;

    76                     }

    77                 }

    78             } catch (NullPointerException npe) {

    79             }

    80         }

    81     }

    82     static void valueTest(boolean store) {

    83         for (int field = 0; field < 9; field++) {

    84             try {

    85                 Test7103261 o  = nonnull_value;

    86                 Test7103261 o2 = nonnull_value2;

    87                 for (int i = 0; i < 100000; i++) {

    88                     switch (field) {

    89                     case 0: o.l = o2.l; break;

    90                     case 1: o.i = o2.i; break;

    91                     case 2: o.f = o2.f; break;

    92                     case 3: o.d = o2.d; break;

    93                     case 4: o.b = o2.b; break;

    94                     case 5: o.c = o2.c; break;

    95                     case 6: o.s = o2.s; break;

    96                     case 7: o.z = o2.z; break;

    97                     case 8: o.o = o2.o; break;

    98                     default: throw new InternalError();

    99                     }

   100                     if (i == 90000) {

   101                         // hide nullness from optimizer

   102                         if (store)

   103                             o = null_value;

   104                         else

   105                             o2 = null_value;

   106                     }

   107                 }

   108             } catch (NullPointerException npe) {

   109             }

   110         }

   111     }

   112 }