[jira] Commented: (LOG4NET-167) ArrayOutOfBounds Exception in MemoryAppender.getEvents()

["Ron Grabowski (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LOG4NET-167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12625091#action_12625091 ] 

Ron Grabowski commented on LOG4NET-167:
---------------------------------------

It looks like elements can be added to the array while the Array.CopyTo is taking place which means the size/count could become out of bounds. This should fix it:

lock (m_eventsList.SyncRoot)
{
    return (LoggingEvent[])m_eventsList.ToArray(typeof(LoggingEvent));
}

> ArrayOutOfBounds Exception in MemoryAppender.getEvents()
> --------------------------------------------------------
>
>                 Key: LOG4NET-167
>                 URL: https://issues.apache.org/jira/browse/LOG4NET-167
>             Project: Log4net
>          Issue Type: Bug
>          Components: Appenders
>    Affects Versions: 1.2.10
>         Environment: Windows Vista and XP.
>            Reporter: Kenny Clement
>
> Getting this every once in a while.
> No specific reproduction scenario.
> Destination array was not long enough. Check destIndex and length, and the array's lower bounds.
>    at System.Array.Copy(Array sourceArray, Int32 sourceIndex, Array destinationArray, Int32 destinationIndex, Int32 length, Boolean reliable)
>    at System.Collections.ArrayList.ToArray(Type type)
>    at log4net.Appender.MemoryAppender.GetEvents()

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