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https://issues.apache.org/jira/browse/XALANJ-2725?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17812766#comment-17812766
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Max commented on XALANJ-2725:
-----------------------------
[~kesh...@alum.mit.edu] , thank you for the heads up, and for actually working
on this at all. This project has been in deep neglect until you gave it some
love. Good luck and rooting for your return :)
> Possible buffer-boundry issue when serializing surrogate pairs
> --------------------------------------------------------------
>
> Key: XALANJ-2725
> URL: https://issues.apache.org/jira/browse/XALANJ-2725
> Project: XalanJ2
> Issue Type: Improvement
> Security Level: No security risk; visible to anyone(Ordinary problems in
> Xalan projects. Anybody can view the issue.)
> Components: Serialization
> Reporter: Joe Kesselman
> Assignee: Joe Kesselman
> Priority: Major
> Labels: Surrogates, escaping, unicode, utf
> Attachments: astral-chars-split-buffer.patch
>
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> XALANJ-2419 addressed a case where "astral" Unicode characters, requiring a
> surrogate pair (two UTF-16 units), were not being serialized correctly. We
> have a proposed fix for that.
> There is reported to still be an edge case when a surrogate pair which
> crosses buffer boundaries might not be handled correctly. [~maxfortun]
> offered what looks like a reasonable proposed fix
> (https://github.com/maxfortun/xalan-j/blob/a9bd5591d9f8a523548aeec091e886b64c691628/src/org/apache/xml/serializer/ToStream.java#L1607),
> but in my testing this was not serializing the surrogate pairs correctly,
> causing regression on the tests XALANJ-2419 introduced. I don't know whether
> that's because we're taking multiple paths through
> But the edge case does appear to be real, and if so we will need some such
> solution.
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