Subject: bug#2790: emacs 22.1.1 cannot open 5GB file on
64GB 64-bit Linux box

> Date: Thu, 26 Mar 2009 16:01:51 -0500
> From: Mike Coleman <tutufan@xxxxxxxxx>
> Cc: 2790@xxxxxxxxxxxxxxxxxxxxxxxxxx
> 'which emacs' is /usr/bin/emacs.

I asked to type "file `which emacs`". The `file' part is important.

> most-positive-fixnum gives
> 1152921504606846975 (#o37777777777, #xffffffff)

That sounds like a bug: the decimal representation is like I'd expect
on a 64-bit machine, but the octal and hex representations are like on
a 32-bit machine. Strange...

Perhaps this is some bug that was in Emacs 22.1. Can you upgrade to