posix_spawn

[Mark Geisert]

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@cygwin.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