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Date:      Mon, 21 Oct 1996 09:53:27 +0900 (JST)
From:      Michael Hancock <michaelh@cet.co.jp>
To:        phk@FreeBSD.ORG
Cc:        current@FreeBSD.ORG
Subject:   Re: <sys/queue.h>
Message-ID:  <Pine.SV4.3.93.961021094920.20316A-100000@parkplace.cet.co.jp>
In-Reply-To: <24020.845822819@critter.tfs.com>

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For a good explanation of why you only want to use typedefs for scalar
types and function types see "Expert C Programming" by Van der Linden,
SunPress.  It's a biased book, but it does contain a lot of good stuff on
C.

Regards,


Mike Hancock

On Sun, 20 Oct 1996, Poul-Henning Kamp wrote:

> As much as I like this file there's one detail that I hate:
> 
> 	/*
> 	 * Singly-linked List definitions.
> 	 */
> 	#define SLIST_HEAD(name, type)                                  \
> 	struct name {                                                   \
> -		struct type *slh_first; /* first element */             \
> +		type *slh_first; /* first element */ 			\
> 	}
> 
> If I have something like this:
> 
> 	typedef struct geom_req_s geom_req;
> 
> 	struct geom_req_s {
> 		...
> 	};
> 
> How can I add a any of the types from <sys/types.h> to this data-type
> in a clean fashion ?  All other use the typedef, but for the queues
> I have to use the struct name.
> 
> Is it too late to fix this oversight in <sys/queue.h> ?
> 





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