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Date: Mon, 30 Jan 2012 17:02:41 -0600
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Subject: Re: Perl system() function works sometimes.
From: Reini Urban <rurban@x-ray.at>
To: Gary E Barnes <gebarnes@us.ibm.com>
Cc: cygwin@cygwin.com
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On Mon, Jan 30, 2012 at 11:45 AM, Gary E Barnes wrote:
> I have tried perlrebase and also rebaseall.  I tried deleting cygwin from
> the machine and reinstalling from scratch.
> None of that fixes the problem.  If it is some sort of rebase problem then
> the usual tools don't fix it.
>
> And from what you said about calling execve when there are no interesting
> shell redirections, it would appear
> that perl calling system() simply doesn't work at all for some reason.

Yes, it failed with a rebaseall-related fork failure because you used system
with the system sh-wrapper. If you call it as list you wouldn't see this error.

Yes, Calling perl within perl within perl will lead to memory conflicts.
This a known problem we will have to live for a while unfortunately.
There's not enough DLL space. Even less the more apps are loaded.
Yes, this is fragile.

That's why I recommended not to use system with strings.
-- 
Reini Urban
http://cpanel.net/   http://www.perl-compiler.org/

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