Serhiy Palamarchuk created XERCESJ-1655:
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             Summary: UTF8Reader buffer overflow due to incorrect total
                 Key: XERCESJ-1655
                 URL: https://issues.apache.org/jira/browse/XERCESJ-1655
             Project: Xerces2-J
          Issue Type: Bug
          Components: SAX
    Affects Versions: 2.10.0
            Reporter: Serhiy Palamarchuk


UTF8Reader buffer overflow with exception ArrayIndexOutOfBoundsException: 2048 
appears when surrogate is cached and next read count is less than buffer size.

See attached patch with test to get better understanding of preconditions



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