[jira] Commented: (XALANJ-1243) java.lang.StackOverflowError in XString.equals()

["Henry Zongaro (JIRA)" <xa...@xml.apache.org>]

    [ http://issues.apache.org/jira/browse/XALANJ-1243?page=comments#action_12459661 ] 
            
Henry Zongaro commented on XALANJ-1243:
---------------------------------------

I just happened to notice that all four of these issues (XALANJ-1243, XALANJ-1880, XALANJ-1991 and XALANJ-2001) appear to be related to one another because they all seem to describe the same problem with XString.equals, but I haven't investigated further to be certain of that, so I just thought I'd provide that information.  XALANJ-2001 contains a patch that avoids the problem, but I didn't like the patch at the same, so it's never been applied.

> java.lang.StackOverflowError in XString.equals()
> ------------------------------------------------
>
>                 Key: XALANJ-1243
>                 URL: http://issues.apache.org/jira/browse/XALANJ-1243
>             Project: XalanJ2
>          Issue Type: Bug
>          Components: XPath
>    Affects Versions: 2.4Dx
>         Environment: Operating System: Solaris
> Platform: Sun
>            Reporter: Wolfram
>         Assigned To: Xalan Developers Mailing List
>         Attachments: 1.xml, 1.xsl, xalan-stack-overflow.zip
>
>
> In some special cases I get a StackOverflowError in method equals(XMLString), 
> line #444 [ if (!obj2.hasString()) return obj2.equals(this); ]
> I think this can occur if to XStringForChars-objects are compared, and both
> objects haven't been used before. Than the hasString()-method of
> XStringForChars returns false for both, resulting in an endless loop.
> I patched XStringForChars method hasString() to return always true,
> which works for me.
> Don't know if this is the right way to solve this bug.

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