linux-kernel - Re: [PATCH] Use more gcc extensions in the Linux headers

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Date:	Fri, 09 Mar 2007 23:03:05 -0500
From:	Valdis.Kletnieks@...edu
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH] Use more gcc extensions in the Linux headers

On Sat, 10 Mar 2007 09:57:32 +1100, Rusty Russell said:

> +/* GCC is awesome. */
>  #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])			      \
>  	+ sizeof(typeof(int[1 - 2*!!__builtin_types_compatible_p(typeof(arr), \
>  		 typeof(&arr[0]))]))*0)

-/* GCC is awesome. */
+/* GCC leaves me speechless. */



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