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Re: Reentrant argp


From: Niels Möller
Subject: Re: Reentrant argp
Date: 20 May 2003 09:48:27 +0200
User-agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2

"M. Gerards" <metgerards@student.han.nl> writes:

> For the screensaver patch I sent yesterday to bug-hurd I assumed argp is 
> reentrant. Is this really the case for GNU/Hurd? It is for GNU/Linux, but I'm 
> not sure yet about GNU/Hurd.

argp uses getopt. getopt uses global variables to keep state. And as
far as I know getopt doesn't use tricks like thread local storage.
So it's not reentrant.

My hacked argp,
http://www.lysator.liu.se/~nisse/misc/argp-standalone-1.2.tar.gz
doesn't depend on getopt, and doesn't use global variables.

Regards,
/Niels




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