[
https://issues.apache.org/jira/browse/XERCESJ-1668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17260733#comment-17260733
]
Timo Boehme commented on XERCESJ-1668:
--------------------------------------
I have the same problem (org.xml.sax.SAXParseException; lineNumber: 6414317;
columnNumber: 1136; Invalid byte 2 of 4-b yte UTF-8 sequence) with an update
file from the Medline corpus of the NIH (see
[https://pubmed.ncbi.nlm.nih.gov/help/#download-pubmed-data] , file
[https://ftp.ncbi.nlm.nih.gov/pubmed/baseline/pubmed21n1052.xml.gz] ). The file
passes all UTF-8 tests, contains 3 4-byte sequences starting with 'F4' byte
with correct following 3 bytes.
This is a severe problem as totally valid and simple XML files are rejected by
the parser.
> Off-by-one bug w/ surrogates in UTF8Reader
> ------------------------------------------
>
> Key: XERCESJ-1668
> URL: https://issues.apache.org/jira/browse/XERCESJ-1668
> Project: Xerces2-J
> Issue Type: Bug
> Components: Other
> Reporter: Jan Berkel
> Priority: Major
> Attachments: surrogate.patch
>
>
> There's a bug in the surrogate handling when the reader buffer is exhausted
> and only the high-part can be written. On the next run the low-part gets
> added but the buffer space calculation is off by one.
> This gets triggered when parsing the current [enwiktionary dump
> file|http://dumps.wikimedia.org/enwiktionary/20151102/enwiktionary-20151102-pages-articles.xml.bz2].
> {noformat}
> org.xml.sax.SAXParseException; lineNumber: 99849520; columnNumber: 47;
> Invalid byte 2 of 4-byte UTF-8 sequence.
> {noformat}
> In the attached patch I added a fix + testcase for this bug. Another related
> issue is that when the low-part is written as last part of the stream -1 is
> returned instead of 1.
> Is UTF8Reader still necessary? It might be safer to just use a plain
> InputStreamReader.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: j-dev-unsubscr...@xerces.apache.org
For additional commands, e-mail: j-dev-h...@xerces.apache.org
