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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=8863

DocumentImpl::setUserData has invalid handling

           Summary: DocumentImpl::setUserData has invalid handling
           Product: Xerces-C++
           Version: 1.7.0
          Platform: All
        OS/Version: Other
            Status: NEW
          Severity: Normal
          Priority: Other
         Component: DOM
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]


DocumentImpl::setUserData throws an exception when called with data=0 and 
userData=0:

        if (!userData && data)
                userData = new RefHashTableOf<void>(29, false, new HashPtr());
        if (!data && userData)
                userData->removeKey((void*)n);
        else // this is called if data=0 and userData=0
                userData->put((void*)n,data);

fix:
        if (!userData && data)
                userData = new RefHashTableOf<void>(29, false, new HashPtr());

        if (userData) // only modify if userData exists
        {
                if(!data)
                        userData->removeKey((void*)n);
                else
                        userData->put((void*)n,data);
        }

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