Error: invalid code in LZW stream.

[Aerocatia]

Hi

The attached TIFF triggers an error related the the LZW compression, but libtiff will decode this.
It was created with Paint.NET. It works after re-saving it with GIMP.

If the LZW steam is indeed invalid then that is acceptable, bit it would be interesting to know why.

b40_fog_noise.zip

[HeroicKatora]

The offending chunk seems to be chunk 4 (rows 36-44). chunk-4.tar.gz. That seems to be invalid when running it though both weezl and salzweg using the tiff size switch and 8-bit MSB encoding as specified in the tiff specification as LZW compression. Not sure if the library or myself is doing something wrong in identifying the right bits?

[fintelia]

I have vague recollections of tracking down a bug like this that ended up being caused by libtiff only pulling the needed number of bytes from the LZW stream and not checking that anything after that was valid.