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https://issues.apache.org/jira/browse/LUCENENET-54?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13190345#comment-13190345
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Christopher Currens commented on LUCENENET-54:
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This affected DanishStemmer, FinnishStemmer and KpStemmer. "ket-bra" is used
almost everywhere in that code, expect that one place, causing the issue with
the index vs length. I just pushed a fix for this to the 3.0.3 branch.
> ArgumentOurOfRangeException caused by SF.Snowball.Ext.DanishStemmer
> -------------------------------------------------------------------
>
> Key: LUCENENET-54
> URL: https://issues.apache.org/jira/browse/LUCENENET-54
> Project: Lucene.Net
> Issue Type: Bug
> Affects Versions: Lucene.Net 2.9.4, Lucene.Net 3.0.3, Lucene.Net 2.9.4g
> Environment: Windows XP SP2, lucene.net v2.0 004
> Reporter: Torsten Rendelmann
> Priority: Critical
> Fix For: Lucene.Net 3.0.3
>
>
> Exception Information
> System.SystemException: System.Reflection.TargetInvocationException:
> Exception has been thrown by the target of an invocation. --->
> System.ArgumentOutOfRangeException: Index and length must refer to a location
> within the string.
> Parameter name: length
> at System.String.Substring(Int32 startIndex, Int32 length)
> at System.Text.StringBuilder.ToString(Int32 startIndex, Int32 length)
> at SF.Snowball.SnowballProgram.slice_to(StringBuilder s)
> at SF.Snowball.Ext.DanishStemmer.r_undouble()
> at SF.Snowball.Ext.DanishStemmer.Stem()
> --- End of inner exception stack trace ---
> at System.Reflection.RuntimeMethodInfo.InternalInvoke(Object obj,
> BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo
> culture, Boolean isBinderDefault, Assembly caller, Boolean verifyAccess)
> at System.Reflection.RuntimeMethodInfo.InternalInvoke(Object obj,
> BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo
> culture, Boolean verifyAccess)
> at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags
> invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
> at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters)
> at System.Reflection.MethodInfo.Invoke(Object obj, Object[] parameters)
> at Lucene.Net.Analysis.Snowball.SnowballFilter.Next()
> at Lucene.Net.Analysis.Snowball.SnowballFilter.Next()
> at Lucene.Net.Index.DocumentWriter.InvertDocument(Document doc)
> at Lucene.Net.Index.DocumentWriter.AddDocument(String segment, Document
> doc)
> at Lucene.Net.Index.IndexWriter.AddDocument(Document doc, Analyzer
> analyzer)
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