From: djberg96@... (Daniel Berger)
Date: 2004-03-26T00:29:32+09:00
Subject: Re: File.stat.size errors with file sizes over 2Gigs.

Martin Weber <Ephaeton@gmx.net> wrote in message news:<20040324212533.GF11599@phaeton.entropie.net>...
> On Thu, Mar 25, 2004 at 05:48:26AM +0900, walter@mwsewall.com wrote:
> > File.stat('file_name').size returns erroneous file sizes when the 
> > files are over 2 Gigs in size (at which point the number wraps around 
> > and becomes negative).  Is this an expected limitation or a bug?
> > 
> > I am using the Pragmatic Programmers 1.8.1-11 build on a windows 2000 
> > machine.
> 
> I'm not sure about windows, but on unix[1] the file size usually is an
> off_t, which is a signed value[2], and traditionally was 32bit (i.e. +/- 2Gig).
> 
> Following, some unices (namely solaris comes to mind) offered 'large file
> versions' of many of their calls, others (e.g. BSDs) just switched to a
> signed 64 bit value for off_t. I think the latter is called for in the windows
> compat layer (as I assume there is one, implementing stat) to really solve your
> problem.
> 
> [1] -- in stat(2)'s struct stat that is
> [2] -- to seek(2) backwards
> 
> Regards,
> 
> -Martin

If you're on a 64 bit platform you can build Ruby as a 64 bit app, and
that will also solve this problem.

My problem on Solaris is that, when I use a 32 bit Ruby 1.8.x, I must
disable large file support in order to get any extensions that use
procfs.h to compile.  I've posted on this before with no solution.

Dan