Inflater.c bug?

[Archie Cobbs]

pra at mint.se writes:
> I have problems using GZIPInputStream. I always get an error message
> like this:
> java.lang.Error: oversubscribed dynamic bit lengths tree
>         at java/util/zip/InflaterInputStream.read(72)
>         at java/util/zip/GZIPInputStream.read(78)
>         at java/io/InputStreamReader.read(53)
>         at java/io/BufferedReader.refillBuffer(164)
>         at java/io/BufferedReader.readLine(130)
>         at TestIo.main(line unknown, pc 0x83e812d)
> 
> I have tracked the error down to inftrees.c in zlib but can't find any
> way of improving the code. Any one having any experinec on this.
> 
> I have tested it with
> kaffe 1.0b2 and kaffe 1.0b3 and the latest snapshot. It has also been
> tested both agains zlib 1.0.4 and 1.1.2.
> 
> This is sad becaus I get a 7 timespeed improvement in io with kaffe
> compared to the blackdown JDK, and I need this improvement for GZ-files
> to.
> 
> Here is the codefragment creating the input-stream, from wich I 
> read with readLine():
> 
>   protected Reader makeReader(String file) throws java.io.IOException {
>     Reader reader;
>     // Create an input source for the lexer
>     FileInputStream fileStream = new java.io.FileInputStream( file );
>     if ( se.dn.annons.util.FileUtils.isGZ( file) ) {
>       GZIPInputStream inStream = new GZIPInputStream( fileStream );
>       reader = new BufferedReader( new InputStreamReader( inStream ) );
>     } else {
>       reader = new BufferedReader( new InputStreamReader( fileStream));
>     }
>     return reader;
>   }

Does this happen with any input file or just some?
If the latter, please email a (small) file that triggers
the bug, plus a complete test Java file, if you can..

-Archie

___________________________________________________________________________
Archie Cobbs   *   Whistle Communications, Inc.  *   http://www.whistle.com