[DAFFODIL-2022] infinite loops when using dfdl:property extra-long form for property values

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.2.0
• Fix Version/s: 2.3.0
• Assignee: Dave Thompson
• Reporter: Mike Beckerle
• Created: 22/Nov/18 03:14
• Updated: 20/May/21 12:33
• Resolved: 30/Nov/18 21:55

Description

I have a schema where the delimiters and lengthPatterns have quasi-XML syntax in them; hence, I am using the extra-long-form annotations e.g.,
{{

{ <xs:annotation><xs:appinfo source="http://www.ogf.org/dfdl"> <dfdl:element> <dfdl:property name="initiator"><![CDATA[<rdf:RDF%SP;]]></dfdl:property> </dfdl:element> </xs:appinfo></xs:annotation> }

}}

I am finding that compiling the schema seems to go into an infinite loop.

Even an egregious error like forgetting that <dfdl:property...> must appear inside a <dfdl:element> results in infinite loop, not a diagnostic message.

So there are bugs here to chase down. We need a "torture test" for this dfdl:property style. It's for exactly the use case I have here... where the property values are "unfriendly" to XSD syntax.