Bug #2491: NPE in class Whitespace - Saxon - Saxonica Developer Community

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Bug #2491

closed

NPE in class Whitespace

Added by Radu Coravu about 9 years ago. Updated about 9 years ago.

Status:

Closed

Priority:

Low

Assignee:

Michael Kay

Category:

JAXP Java API

Sprint/Milestone:

9.6.0.8

Start date:

2015-11-04

Due date:

% Done:

100%

Estimated time:

Legacy ID:

Applies to branch:

9.6

Fix Committed on Branch:

9.6

Fixed in Maintenance Release:

9.6.0.8

Platforms:

Description

According to the Javadoc on the SAX method "org.xml.sax.ContentHandler.processingInstruction(String, String)" the processing instruction "data" part can also be NULL. So if the Saxon receiving content handler is called with NULL data value, it should not throw a NPE.

  [filter] java.lang.NullPointerException
   [filter] 	at net.sf.saxon.value.Whitespace.removeLeadingWhitespace(Whitespace.java:137)
   [filter] 	at net.sf.saxon.event.ReceivingContentHandler.processingInstruction(ReceivingContentHandler.java:507)
   [filter] 	at org.dita.dost.module.DebugAndFilterModule$DTDForwardHandler.startDTD(DebugAndFilterModule.java:756)
   [filter] 	at org.apache.xerces.parsers.AbstractSAXParser.doctypeDecl(Unknown Source)

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Updated by Michael Kay about 9 years ago

Found in version changed from 9.6.0.7 to 9.6

Congratulations, it's not often someone finds a bug that has been in the product unnoticed for 15 years. Will fix.

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Updated by Michael Kay about 9 years ago

Category set to JAXP Java API
Status changed from New to Resolved
Assignee set to Michael Kay

Fix committed (with regression testing only) on the 9.6 and 9.7 branches.

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Updated by Radu Coravu about 9 years ago

Thanks Michael.

The DITA Open Toolkit DebugAndFilterModule calls methods directly on the Saxon content handler implementation and at some point it tries to set a PI with a target but null data.

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