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https://issues.apache.org/jira/browse/DAFFODIL-284?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17817636#comment-17817636
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Mike Beckerle commented on DAFFODIL-284:
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This bug is in the schema compiler. It is unrelated to circular definition
issues causing deadlocks when unparsing. That is a runtime mechanism getting
deadlocked. This is mutually referencing in the schema compiler.
> hidden group ref - circular stack overflow at schema compile time
> -----------------------------------------------------------------
>
> Key: DAFFODIL-284
> URL: https://issues.apache.org/jira/browse/DAFFODIL-284
> Project: Daffodil
> Issue Type: Bug
> Components: Back End, Front End, Middle "End"
> Reporter: Mike Beckerle
> Assignee: Mike Beckerle
> Priority: Minor
>
> Implementation ideas: just add a dfdl:__hidden__="true" attribute to the
> nodes that come from a hidden group ref. TDML runner can strip them off
> before comparing actual to expected.
> (This does not meet all the requirements for the infoset of DFDL, because the
> hidden elements will take up positions in the infoset during processing
> thereby making Xpath expression in the DFDL work differently than if the
> nodes were behaving as hidden all along.)
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