[DAFFODIL-2306] Abort: NadaParsers are all supposed to optimize out!

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.6.0
• Component/s: Middle "End"
• Assignee: Steve Lawrence
• Reporter: Mike Beckerle
• Created: 25/Mar/20 20:23
• Updated: 27/Mar/20 20:51
• Resolved: 26/Mar/20 14:39

Description

I have a schema that uses this group. It's a way of doing an optional element
using a choice-by-dispatch.

Running this causes an abort when a NadaParser survives the optimizer and makes it into the parser definition.

<xs:group name="wordPadding">
  <xs:choice dfdl:choiceDispatchKey="{ if ($tns:l16WordPaddingBits eq 0) then '0' else '1' }" >
     <xs:sequence dfdl:choiceBranchKey="0"/>
      <xs:element dfdl:choiceBranchKey="1" name="spare" type="vmfgi:padding" dfdl:length="{ $tns:l16WordPaddingBits }" />
  </xs:choice>
</xs:group>