jdk8-mips64-public/hotspot: test/compiler/6859338/Test6859338.java@fe95187e8882

6859338: amd64 native unverified entry point pushes values before implicit null check
Reviewed-by: kvn, twisti

     1 /*

     2  * Copyright 2009 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 /**

    26  * @test

    27  * @bug 6859338

    28  * @summary Assertion failure in sharedRuntime.cpp

    29  *

    30  * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions  -XX:-InlineObjectHash -Xbatch -XX:-ProfileInterpreter Test6859338

    31  */

    33 public class Test6859338 {

    34     static Object[] o = new Object[] { new Object(), null };

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

    36         int total = 0;

    37         try {

    38             // Exercise the implicit null check in the unverified entry point

    39             for (int i = 0; i < 40000; i++) {

    40                 int limit = o.length;

    41                 if (i < 20000) limit = 1;

    42                 for (int j = 0; j < limit; j++) {

    43                     total += o[j].hashCode();

    44                 }

    45             }

    47         } catch (NullPointerException e) {

    48             // this is expected.  A true failure causes a crash

    49         }

    50     }

    51 }

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