[jira] [Commented] (XERCESJ-1683) ArithmeticException in SymbolHash.get

["Radu Coravu (Jira)" <xe...@xml.apache.org>]

    [ https://issues.apache.org/jira/browse/XERCESJ-1683?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16932038#comment-16932038 ] 

Radu Coravu commented on XERCESJ-1683:
--------------------------------------

I do not have that sample, I changed the subject of the issue to better reflect the problem. I guess I'm very used to adding NullPointerException-related errors, but not on the Xerces project :)

> ArithmeticException in SymbolHash.get
> -------------------------------------
>
>                 Key: XERCESJ-1683
>                 URL: https://issues.apache.org/jira/browse/XERCESJ-1683
>             Project: Xerces2-J
>          Issue Type: Bug
>          Components: SAX
>            Reporter: Radu Coravu
>            Priority: Major
>
> We use as XSModelImpl to iterate XML Schema components.
> One of our clients, on a schema that they did not provide obtained this NPE:
> {code}[ AWT-EventQueue-0 ]  -  java.lang.ArithmeticException: / by zero
> java.lang.ArithmeticException: / by zero
>     at org.apache.xerces.util.SymbolHash.get(Unknown Source)
>     at org.apache.xerces.impl.xs.XSModelImpl.getSubstitutionGroup(Unknown Source) {code}
> The NPE seams feasible if a SymbolHash with zero length is constructed and then queried for a value. Maybe this could be taken into account on your side.



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