Cannot read gz files larger than 4 GB

[johan-gson]

Hi,

It seems that read_tsv cannot read files larger than 4GB if they are gunzipped. I did some calculations, and it seemed like it got to about 4GB of unpacked data and then ended reading, meaning that the last 150k lines were not read. I suspect there is an unsigned 32-bit integer somewhere in the code, but I cannot be sure ofcourse. This was on Windows. I think the problem exists for any huge file that is gunzipped. It didn't crash or anything, just gave too few lines. If I unzipped the file, I could read all of it without a problem. I don't think I ran out of memory either. Hard to provide an example, I cannot share the file, but I would guess any file large enough will work.