[ https://issues.apache.org/jira/browse/HARMONY-6395?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783626#action_12783626 ] 

Jim Yu commented on HARMONY-6395:
---------------------------------

You can reproduce this defect with arrays input whose length is larger than 6 and there are several Double.NaN elements in it.

> [classlib][luni] Arrays.sort(double []) will result in StackOverflowError for specific arrays input
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HARMONY-6395
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6395
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>    Affects Versions: 5.0M11
>            Reporter: Jim Yu
>             Fix For: 5.0M12
>
>         Attachments: HARMONY-6395.diff
>
>
> There is a simple testcase as below. You can see StackOverflowError if run this testcase. This is a defect of Arrays.sort(double []), I have attached a fix for it.
> import java.util.Arrays;
> public class SortTest {
>     public static void main(String[] args) {
>         double[] array = { Double.NaN, 1.0, 2.0, Double.NaN, Double.NaN, 3.0,
>                 4.0 };
>         displayArray(array);
>         Arrays.sort(array);
>         displayArray(array);
>         System.out.println();
>     }
>     private static void displayArray(double[] array) {
>         for (double d : array)
>             System.out.print(d + " ");
>         System.out.println();
>     }
> }

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