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https://issues.apache.org/jira/browse/XERCESC-1987?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alberto Massari closed XERCESC-1987.
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Resolution: Won't Fix
The code in the trunk works correctly; we are not backporting fixes to 2.8
though
> Transcoding Issue with single XMLCh to utf8
> -------------------------------------------
>
> Key: XERCESC-1987
> URL: https://issues.apache.org/jira/browse/XERCESC-1987
> Project: Xerces-C++
> Issue Type: Bug
> Components: Utilities
> Affects Versions: 2.8.0
> Environment: Windows XP
> Reporter: Simon White
>
> There appears to be an issue with transcoding to utf8. Conditions:
> Input string = Single Chinese Character (XmlCh holds value 27493).
> Problem code in TranscodeToStr::transcode:
> unsigned int allocSize = len * sizeof(XMLCh);
> fString = (XMLByte*)fMemoryManager->allocate(allocSize);
> This code sets the output buffer to be two bytes. The issue here is that the
> character in question converts to a 3 byte utf8 character. It therefore hits
> this in XMLUTF8Transcoder.cpp:
> // If we cannot fully get this char into the output buffer,
> // then leave it for the next time.
> //
> if (outPtr + encodedBytes > outEnd)
> break;
> Since this is only a single character being converted it returns 0 and then
> hits this since nothing could be decoded:
> if(charsRead == 0)
> ThrowXMLwithMemMgr(TranscodingException,
> XMLExcepts::Trans_BadSrcSeq, fMemoryManager);
> The sequence is not invalid, only output buffer has been limited to input
> buffer size. Is simply adding a few spare characters to allocSize the
> correct fix?
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