[jira] [Commented] (XMLBEANS-487) Entity replacement in wrong place when expansion coincides with buffer growth

["Jesper Steen Møller (JIRA)" <xm...@xml.apache.org>]

    [ https://issues.apache.org/jira/browse/XMLBEANS-487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13449840#comment-13449840 ] 

Jesper Steen Møller commented on XMLBEANS-487:
----------------------------------------------

I tried on version 2.4, 2.5 and 2.6, all are affected.
                
> Entity replacement in wrong place when expansion coincides with buffer growth
> -----------------------------------------------------------------------------
>
>                 Key: XMLBEANS-487
>                 URL: https://issues.apache.org/jira/browse/XMLBEANS-487
>             Project: XMLBeans
>          Issue Type: Bug
>          Components: XmlObject
>    Affects Versions: Version 2.6
>            Reporter: Jesper Steen Møller
>         Attachments: TestEntityNearBufferGrowth.java
>
>
> When serializing an object to XML using newReader(), some of the entity replacements for '&' appear in the wrong places, giving invalid XML.
> Example:
> <a q='aaaaaaaaaaaaaaaaa'><t>Hall &amp; Oates</t></a>
> could be serialized as:
> <a q='aaaaaaaa&amp;aaaaaaaa'><t>Hall & Oates</t></a>
> The bug depends on the sequence of the read()-calls, the size of the requested buffer, and the content. We're using the newReader to feed a Xalan transformation, and in some tens of millions different transformations, this has happened just a few times -- but this time, we've isolated the problem, which is attached as a stand-alone test case.

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