netdev - Re: [GIT] Networking

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Message-ID: <599B264F-0076-4C80-9EF9-853D32D09E3F@intel.com>
Date:	Tue, 8 Sep 2015 16:51:01 +0000
From:	"Rustad, Mark D" <mark.d.rustad@...el.com>
To:	David Laight <David.Laight@...LAB.COM>
CC:	Marcel Holtmann <marcel@...tmann.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Lorenzo Bianconi <lorenzo.bianconi83@...il.com>,
	"Berg, Johannes" <johannes.berg@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Network Development <netdev@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT] Networking

> On Sep 7, 2015, at 4:02 AM, David Laight <David.Laight@...LAB.COM> wrote:
> 
> Feed:
> int bar(int (*f)[10]) { return sizeof *f; }
> into cc -O2 -S and look at the generated code - returns 40 not 4.

Yes, indeed it does. And with clang too. I guess I was too easily discouraged when looking for a workable syntax some years ago. At the time I stopped when the typedef worked, which really just encapsulates this. I should have recognized that then. Thanks for making it all so clear.

--
Mark Rustad, Networking Division, Intel Corporation


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