zLib

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I've been trying to get zlib to work on my AS/400. I'm using an addon (from
http://homepage1.nifty.com/uzaemon/ <http://homepage1.nifty.com/uzaemon/> )
which allows me to just handle ZIP files. I've managed to get the
compression to work, but the miniunz (mini unzip) program will not work
correctly. I was wondering if anyone else has attempted to use this and had
any problems.

Whenever I run miniunz then I get a "Pointer not set for location
referenced." message on the job log. I've tracked this down to the following
piece of code in "unzip.c":

if (fseek(pfile_in_zip_read_info->file,
file_in_zip_read_info->pos_in_zipfile +
pfile_in_zip_read_info->byte_before_the_zipfile,SEEK_SET)!=0)
return UNZ_ERRNO;

I've tried patching this code to:

if (fseek(fin, 0, SEEK_SET) != 0)
            return UNZ_ERRNO;

But I still get the error. I've also made fin a global variable and ensured
that it never gets closed once it has opened. However, if I just comment out
this line then the following "fread" fails in the same way. It's definitely
the FILE* that's causing the problem since I can replace it with stdin and
no get any problems (other than the obvious).

It's driving me insane so any help would be greatfully received :-)

Steve.