#40 NullPointerException in Saxon 10.1 (with fix)

[Christopher Mosher]

I received NullPointerException using Saxon 10, but was able to fix it, as follows:
In Saxon10Core, change:
new LargeAttributeMap(attributeList),
to:
attributeList.size() == 0 ? EmptyAttributeMap.getInstance() : new LargeAttributeMap(attributeList),

[xml-project.com]

Hi Christopher,
that is interesting because my implementation is intensely tested with Saxon10 against the XProc 3.0 testsuite. No errors show up, so there seems to be a missing case in the testsuite.
Could you provide us with an XProc example where the error shows up and the error message raised by MorganaXProc-IIIse.
As I currently do not see, what problem you are going to fix, I need an example pipeline for my implementation report to.
Thanks for this,
Achim

[Christopher Mosher]

See attached break10.xpl for the pipeline that exhibits the behavior. See attached break10.log for Morgana's output. It crashes on the <xsl:copy> because it doesn't have any attributes.

[xml-project.com]

Thank Christopher. As I see from you log, the bug comes in with Saxon 10.1, while I test against Saxon 10.0.
Saxon 10.1 was released after the Saxon10Connector, so it not supported currently. If you switch back to Saxon 10 the bug will disappear.
There is already a feature request for supporting 10.1. As a general rule I will allways support the stable version (9.9.17) and possibly another one.

[Christopher Mosher]

I'm a bit confused by your statement regarding release dates.
"The June release (rel 0.9.3.7-beta) was published on 2020-06-27."
"Saxon 10.1 maintenance release for Java, released 14 May 2020."

[xml-project.com]

Sorry for beeing inprecise: Saxon10Connector was added with rel. 0.9.1.7 on March 22th. According to "changelog.txt" it has not been updated since then.

[Christopher Mosher]

It looks like Saxon wants us to call net.sf.saxon.om.AttributeMap.fromList . That way it will be compatible with both 10.0 and 10.1.

[xml-project.com]

Maybe. I have not yet decided what Saxon version will be supported for the July release. I think its to early to tell now.

[xml-project.com]

Fixed with 0.9.4-beta