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Message-Id: <E7DB28B4-97B5-4B00-8A36-152392934F14@lafn.org>
From: Doug Hardie <bc979@lafn.org>
To: Jeremy Chadwick <koitsu@freebsd.org>
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Date: Sun, 6 Apr 2008 15:02:44 -0700
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Cc: FreeBSD Stable <freebsd-stable@freebsd.org>
Subject: Re: getenv in FreeBSD 7
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On Apr 6, 2008, at 14:45, Jeremy Chadwick wrote:
> On Sun, Apr 06, 2008 at 02:37:06PM -0700, Doug Hardie wrote:
>> Somewhere between FreeBSD 6.2 and 7.0 getenv has been changed to  
>> return a
>> null if an environment variable is set but has no value.  I don't  
>> find
>> anything anywhere in the documentation/man pages on this.  As a  
>> result, you
>> cannot distinguish between a variable that is not set and one that  
>> is set
>> to a value of "".  Is this a bug or a feature change?
>
> I'd begin peeking here:
>
> http://www.freebsd.org/cgi/cvsweb.cgi/src/lib/libc/stdlib/getenv.c

Did that prior to my original posting.  I find nothing there on it.