jdk8-mips64-public/hotspot: test/compiler/5091921/Test7005594.java@bad7ecd0b6ed

5091921: Sign flip issues in loop optimizer
Summary: Fix integer overflow problem in the code generated by loop optimizer.
Reviewed-by: never

     1 /*

     2  * Copyright (c) 2011, 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  */

    25 /**

    26  * @test

    27  * @bug 7005594

    28  * @summary Array overflow not handled correctly with loop optimzations

    29  *

    30  * @run main/othervm -Xms2048m -Xcomp -XX:CompileOnly=Test7005594.test Test7005594

    31  */

    33 public class Test7005594 {

    35       static int test(byte a[]){

    36           int result=0;

    37           for( int i=0; i<a.length; i+=((0x7fffffff>>1)+1) ){

    38               result += a[i];

    39           }

    40           return result;

    41       }

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

    44           byte a[]=new byte[(0x7fffffff>>1)+2];

    45           int result = 0;

    46           try {

    47               result = test(a);

    48           } catch (ArrayIndexOutOfBoundsException e) {

    49               e.printStackTrace(System.out);

    50               System.out.println("Passed");

    51               System.exit(95);

    52           }

    53           System.out.println(result);

    54           System.out.println("FAILED");

    55           System.exit(97);

    56       }

    58 }

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