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Posted to commits@daffodil.apache.org by "Mike Beckerle (Jira)" <ji...@apache.org> on 2024/03/27 22:57:00 UTC

[jira] [Commented] (DAFFODIL-2883) Pre-existing PUA characters in data cause SDE

    [ https://issues.apache.org/jira/browse/DAFFODIL-2883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17831573#comment-17831573 ] 

Mike Beckerle commented on DAFFODIL-2883:
-----------------------------------------

See file XMLUtils line 156 for the FIXME comment about this issue. 

> Pre-existing PUA characters in data cause SDE
> ---------------------------------------------
>
>                 Key: DAFFODIL-2883
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2883
>             Project: Daffodil
>          Issue Type: Bug
>          Components: Back End
>    Affects Versions: 3.6.0
>            Reporter: Mike Beckerle
>            Priority: Major
>
> If data contains Unicode PUA characters, these cause the Infoset Outputter to convert the RemapPUACharDetected into an SDE.
> We can't get away with this. We need to tolerate PUA characters in data and have them either cause a ParseError, or just tolerate them. (Or have a switch to choose between those modes) 
> This was discovered by fuzz testing. 
> If the existence of PUA characters means the data is gibberish, then perhaps the parser is speculating down a path that should be backtracked. We need a parse error in that case. 
> If the existence of PUA characters is acceptable, then we need no error at all from them. 
>  



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