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  1. Lucene - Core
  2. LUCENE-740

Bugs in contrib/snowball/.../SnowballProgram.java -> Kraaij-Pohlmann gives Index-OOB Exception

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Details

    • Bug
    • Status: Closed
    • Minor
    • Resolution: Won't Fix
    • 1.9
    • None
    • modules/analysis
    • None
    • linux amd64

    • New, Patch Available

    Description

      (copied from mail to java-user)
      while playing with the various stemmers of Lucene(-1.9.1), I got an
      index out of bounds exception:

      lucene-1.9.1>java -cp
      build/contrib/snowball/lucene-snowball-1.9.2-dev.jar
      net.sf.snowball.TestApp Kp bla.txt
      Exception in thread "main" java.lang.reflect.InvocationTargetException
      at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64)
      at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      at java.lang.reflect.Method.invoke(Method.java:615)
      at net.sf.snowball.TestApp.main(TestApp.java:56)
      Caused by: java.lang.StringIndexOutOfBoundsException: String index out
      of range: 11
      at java.lang.StringBuffer.charAt(StringBuffer.java:303)
      at net.sf.snowball.SnowballProgram.find_among_b(SnowballProgram.java:270)
      at net.sf.snowball.ext.KpStemmer.r_Step_4(KpStemmer.java:1122)
      at net.sf.snowball.ext.KpStemmer.stem(KpStemmer.java:1997)

      This happens when executing
      lucene-1.9.1>java -cp
      build/contrib/snowball/lucene-snowball-1.9.2-dev.jar
      net.sf.snowball.TestApp Kp bla.txt

      bla.txt contains just this word: 'spijsvertering'.

      After some debugging, and some tests with the original snowball
      distribution from snowball.tartarus.org, it seems that the attached
      change is needed to avoid the exception.
      (The change comes from tartarus' SnowballProgram.java)

      Attachments

        1. snowball.patch.txt
          296 kB
          Doron Cohen
        2. lucene-1.9.1-SnowballProgram.java
          1 kB
          Andreas Kohn
        3. 740-license.txt
          2 kB
          Steven Parkes

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              Unassigned Unassigned
              ankon Andreas Kohn
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              Dates

                Created:
                Updated:
                Resolved: