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https://issues.apache.org/jira/browse/XERCESC-2130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16334086#comment-16334086
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Roger Leigh commented on XERCESC-2130:
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I'm not a legal expert, and I don't know where the Apache organisation draws
the line between trivial and non-trivial contributions which require a CLA, but
I suspect this counts as non-trivial. I think you would need to fill out an
[individual CLA]([https://www.apache.org/licenses/#clas)] to allow this to be
included. However, others might wish to correct me if I'm wrong.
> UTF16 Surrgate values 0xD800-0xDFFF can not longer be written with xerces
> 3.2.0 (e.g. emoticons)
> ------------------------------------------------------------------------------------------------
>
> Key: XERCESC-2130
> URL: https://issues.apache.org/jira/browse/XERCESC-2130
> Project: Xerces-C++
> Issue Type: Bug
> Components: DOM
> Affects Versions: 3.2.0
> Reporter: Andreas Krantz
> Priority: Critical
> Attachments: fix.patch, patch_.cpp, reproduce.cpp
>
>
> Solution for XERCESC-1854 introduced method
> {{DOMLSSerializerImpl::ensureValidString}}
> which has an error in validation.
> The method validates XMLCh which represent UTF16.
> [Valid Characters|https://www.w3.org/TR/REC-xml/#NT-Char] #x9 | #xA | #xD |
> [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF]
> are the valid UTF32 characters.
> The UTF16 surrogate range from xD800 - xDFFF is used to represent
> [#x10000-#x10FFFF] and should not be handled as nvalid.
> *The reader threads this correctly and does not complain, which leads to an
> asmetric behavior*
> Reading DOM => OK
> Save back DOM => Exception
> I tried to attach an example to show the behavior.
> The used methods
> {{bool XMLChar1_1::isXMLChar(const XMLCh toCheck, const XMLCh toCheck2)}}
> already have a second optional parameter to check surrogate values.
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