From: Brian Candler <b.candler@...>
Date: 2010-08-11T16:49:58+09:00
Subject: Re: Error:  Bignum too big to convert into `long'

Matt Mencel wrote:
> Ah...
> 
> 9223372036854775807 is the timestamp value assigned to the 
> "accountExpires" attribute in Active Directory when any account is set 
> to "Never Expire".
> 
> It works fine on Linux/Mac but not on Solaris.  I guess I'll just 
> convert that timestamp to something like 12/31/2099 23:59:59 before I 
> run the Time.at.

The largest Time you can have in a 32-bit value is:

irb(main):001:0> Time.at(0x7fffffff)
=> Tue Jan 19 03:14:07 +0000 2038
irb(main):002:0> Time.at(0x7fffffff+1)
RangeError: bignum too big to convert into `long'
  from (irb):2:in `at'
  from (irb):2
  from :0

Being Ruby, you are not constrained to using a numeric value. You could 
use nil, or a symbol like :never, or a custom object which has 
sufficient Time-like behaviours:

Never = Object.new
def Never.to_s; "Never"; end
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