[Jazzlib-developers] FW: JazzLib

[Shawn F. <Sha...@te...>]

> Here is an error:
> 
> 
> While decompressing some file (9682528 archive of 191535331ASCII file) we
> are getting 
> DataFormatException (no message).
> 
> The exception is originated at
> InflaterDynHeader.decode(StreamManipulator);
> 
> in the block:
> 
> ...
> 
> 	  case LLENS:
> 	    while (ptr < lnum)
> 	      {
> 		int symbol = blTree.getSymbol(input);
> 		if (symbol < 0)
> 		  return false;
> 		switch (symbol)
> 		  {
> 		  default:
> //  		    System.err.println("litlenLens["+ptr+"]: "+symbol);
> 		    litlenLens[ptr++] = (byte) symbol;
> 		    break;
> 		  case 16: /* repeat last len 3-6 times */
> 		    if (ptr == 0)
> 		      throw new DataFormatException
> 			("Repeating, but no prev len");
> //  		    System.err.println("litlenLens["+ptr+"]: repeat");
> 		    repeatedLen = litlenLens[ptr-1];
> 		    repBits = 2;
> 		    for (int i = 3; i-- > 0; )
> 		      {
> 			if (ptr >= lnum)
> 			  throw new DataFormatException();//-------------<<<
> EXCEPTION IS THROWN HERE.  (Line 156 in our version snapshot).
> 			litlenLens[ptr++] = repeatedLen;
> 		      }
> 		    mode = LREPS;
> 		    continue decode_loop;
> ...
> 
> 
> The Winzip processes the file without any problems with complete
> extraction.
> 
> Questions are:
> 
> 1) Is this a problem or not? Known bug or not?
> 2) Is any patch or something we can use?
> 3) How can we fight this problem?
> 
> Thanks,
> 
> - [Shawn Fuller]  fuller 
> 
>