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Message-ID:	<cd536b39-2eb3-4a9e-b5e3-f0a55bf006ee@maxrnd.com>
Date:	Mon, 21 Apr 2025 01:21:16 -0700
MIME-Version:	1.0
User-Agent:	Mozilla Thunderbird
Subject:	Re: posix_spawn
To:	cygwin-apps AT cygwin DOT com
Cc:	The Cygwin Mailing List <cygwin AT cygwin DOT com>
References:	<87plh7x4qp DOT fsf AT maguirefamily DOT org>
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From:	Mark Geisert via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Mark Geisert <mark AT maxrnd DOT com>
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On 4/19/2025 1:42 PM, Camm Maguire via Cygwin-apps wrote:
> Greetings!
> 
> posix_spawn is returning non-zero without setting errno:
> 
>    massert(!posix_spawnp(&pid, *p1, &file_actions, &attr,  (void *)p1, environ));
> 
> Is this intended to be supported?  Is it known to be working or not
> working elsewhere?

This kind of question should be sent to the main Cygwin mailing list 
cygwin AT cygwin DOT com, now CC'd.  Please follow up there if necessary.

On failure, posix_spawnp() returns the error number rather than setting 
errno.  This is a convention followed by some number of the posix_*() 
functions; which ones is a question for readers of the POSIX standard ;-).

..mark

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