Hi,


I've run into a peculiar issue with Xerces.



The problem is happening when a DTD shall be skipped, the DTD is larger than 
the buffer of the current entity and a CRLF sequence occurs just one char 
before the buffer end.



The reason is that method skipDTD of class XMLDTDScannerImpl (about line 389) 
calls XMLEntityScanner.scanData() to scan for the next occurrence of ']'. The 
scanData method might return true which indicates that the delimiter ']' was 
not found yet and more data is to scan. Other users of scanData would handle 
this and call this method in a loop until it returns false or some other 
condition happens. So I've fixed that place like at the other callers of 
scanData.



Nevertheless, the scanData method would usually load more data when it is at 
the end of the buffer. But in the special case when CRLF is found at the end of 
buffer - 1, scanData would just return true. So I also removed that check at 
line 1374 in XMLEntityScanner. Do you see any problem with that? Is there any 
reason behind it which I'm overseeing?



Furthermore I took the chance for further little cleanups. I've added the new 
copyright header to the files... is that the correct one?



I also aligned the calls to invokeListeners(position) in XMLEntityScanner to 
always pass the actual position from which the load is started. Do you think 
this is correct?



Here is the bug:

https://bugs.openjdk.java.net/browse/JDK-8153781



Here is the webrev:

http://cr.openjdk.java.net/~clanger/webrevs/8153781.0/



Please give me some comments before I finalize my change including a jtreg 
testcase.



Thanks & Best regards

Christoph



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