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Subject: Re: Help with C clearenv and setenv
To: cygwin AT cygwin DOT com
References: <CABHT962nB5jK2sNP9jGaVEbWGrvD72hBVN_q6xX9TKuq3yQ0Gg AT mail DOT gmail DOT com> <7df53a72-cf45-a5df-45dd-6ea2b7d8e0ed AT redhat DOT com>
Cc: Eric Blake <eblake AT redhat DOT com>, sam DOT habiel AT gmail DOT com
From: Ken Brown <kbrown AT cornell DOT edu>
Message-ID: <e029a690-11fa-ddb7-3702-9e513325b1bb@cornell.edu>
Date: Mon, 4 Jun 2018 15:39:44 -0400
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On 5/31/2018 9:43 AM, Eric Blake wrote:
> On 05/30/2018 09:48 AM, Sam Habiel wrote:
>> I have code for a database I am porting to Cygwin.
>>
>> Part of that code is a clearenv() then a couple of setenvs. There is
>> an ifdef for Cygwin, as it doesn't implement clearenv.
> 
> It wouldn't be hard to implement clearenv() for a future release of 
> Cygwin, at least for a version that leaves environ pointing to a 
> 1-element array containing NULL.  A bit more effort and we could 
> probably also support glibc's notion of environ==NULL being shorthand 
> for an empty environment;

I've attempted to do this:

   https://cygwin.com/ml/cygwin-patches/2018-q2/msg00024.html

Ken

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