Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sources.redhat.com/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sources.redhat.com/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
From: "Hannu E K Nevalainen (garbage mail)" <garbage_collector AT telia DOT com>
To: <cygwin AT cygwin DOT com>
Subject: RE: Bug in userIDs in large domains in Cygwin 1.3.22-1
Date: Tue, 29 Apr 2003 11:43:37 +0200
Message-ID: <NGBBLLIAMFLGJEOAJCCEKEANCPAA.garbage_collector@telia.com>
MIME-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Priority: 3 (Normal)
X-MSMail-Priority: Normal
In-Reply-To: <64F0F24E4646E644B6AF14331D69F841D0570A@orsmsx403.jf.intel.com>
X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2615.200
Importance: Normal

> From: cygwin-owner AT cygwin DOT com [mailto:cygwin-owner AT cygwin DOT com]On Behalf
> Of Lafond, Kenneth G

> Suggestion: Extend the userID field to be an INT instead of a SHORT.
> That'll give 2147483648 users before we run into problems.  If
> the issue is
> with 'id' then maybe someone can tell me who to talk to to fix it?

 I flinch every time I see such a suggestion!

 Per definition in the ANSI C standard;
 The size of an INT can *differ* depending on compiler and/or host system,
 i.e. this is a "portability issue". Switching compiler is enough for
getting trouble.

 Please, beware! I'd say; that stay away from "int" altogether.
 IMO "unsigned long" is a better choice here, unless
WINDOWS/Netware/<whatever> uses something else that has a better match.

Reference:
 The ANSI C Programming Language,
 Kernighan/Ritchie,
 Prentice Hall,
 ISBN 0-13-110362-8 (pbk),

 The index gives these;
 p 9 last paragraph,
 p 36 one third down the page,
 p 211 middle paragraph.

/Hannu E K Nevalainen, Mariefred, Sweden - M68K assembler, C/C++, B.Sc. EE
soon

--END OF MESSAGE--


--
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple
Problem reports:       http://cygwin.com/problems.html
Documentation:         http://cygwin.com/docs.html
FAQ:                   http://cygwin.com/faq/