From: _z33 <timid.Gentoo@gmail.com>
To: linux-c-programming@vger.kernel.org
Subject: Re: any compelling reasons to use "offsetof"?
Date: Fri, 19 Aug 2005 11:16:44 +0530 [thread overview]
Message-ID: <de3rgv$72p$1@sea.gmane.org> (raw)
In-Reply-To: <Pine.LNX.4.63.0508181019570.10814@localhost.localdomain>
Robert P. J. Day wrote:
> in a legacy project i just inherited, i did a quick recursive grep
> and noticed a number of invocations of "offsetof". from experience,
> i've concluded that the majority of these calls are because of sloppy
> programming or laziness or just plain doing something incredibly hacky
> that could be done in a more straightforward way.
>
> are there any really compelling reasons to need to know the offset
> of a structure field? just curious.
>
I don't much about that macro. Anyway I came across a couple of articles
from which I have a vague idea of why it is used.
<http://www.cepba.upc.es/docs/sgi_doc/SGI_Developer/books/CLanguageRef/sgi_html/ch01.html>
<http://www.freshsources.com/19950054.HTM>
Mostly, if the project is of ANSI standard, then it is just there for
standards compliance. Otherwise, the macro is used for the reasons
mentioned here in this article
<http://www.embedded.com/showArticle.jhtml?articleID=18312031>.
_z33
--
I love TUX; well... that's an understatement :)
next prev parent reply other threads:[~2005-08-19 5:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-18 14:21 any compelling reasons to use "offsetof"? Robert P. J. Day
2005-08-19 5:46 ` _z33 [this message]
2005-08-19 9:36 ` Glynn Clements
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