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Date:	Tue, 25 Jul 2000 12:27:03 +0200
From:	Corinna Vinschen <vinschen AT cygnus DOT com>
Reply-To:	cygwin <cygwin AT sources DOT redhat DOT com>
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To:	Andrej Borsenkow <Andrej DOT Borsenkow AT mow DOT siemens DOT ru>
CC:	Cygwin AT Sourceware DOT Cygnus DOT Com
Subject:	Re: putenv() - copying environment string violates Unix specs?
References:	<000e01bff606$02e2d500$21c9ca95 AT mow DOT siemens DOT ru>

Andrej Borsenkow wrote:
> 
> According to putenv() description SUS V2, the argument is used "as is"
> and never copied. Cygwin version of putenv() explicitly copies argument
> (actually, multiple times - first in putenv() and then in setenv()).
> This is horribly confusing for programs that expect to manage
> environment strings themselves and/or have own memory allocator (like
> Zsh). It means, that every use must be checked and free'ing of
> environment string put under #ifdef __CYGWIN__
> 
> Is there any particular reason for this? Is there any chance that it may
> be changed to be more Unix-compatible?

You're right and I think it should possible to change that but
I'm not sure if that will make it into 1.1.3.

Corinna

-- 
Corinna Vinschen
Cygwin Developer
Cygnus Solutions, a Red Hat company

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