From: nobu@...
Date: 2006-06-23T01:50:47+09:00
Subject: Re: Using pack/unpack to go from string to address and back to string

Hi,

At Wed, 21 Jun 2006 23:22:17 +0900,
Berger, Daniel wrote in [ruby-talk:198375]:
> It was pointed out to me that Ruby uses rb_str_associate and
> rb_str_associated behind the scenes with regards to pack('p'), but I'm
> also wondering about addresses for strings that weren't obtained via
> pack('p*').
> 
> Or is this simply impossible?

It's disallowed.  If it were possible, you could get an illegal
"String."  For instance:

  [1].pack('l').unpack('p*')

-- 
Nobu Nakada