Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1764336AbXEYUYU (ORCPT ); Fri, 25 May 2007 16:24:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754160AbXEYUYN (ORCPT ); Fri, 25 May 2007 16:24:13 -0400 Received: from an-out-0708.google.com ([209.85.132.245]:10585 "EHLO an-out-0708.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753862AbXEYUYN (ORCPT ); Fri, 25 May 2007 16:24:13 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=JQOTloY2LzTfwOS63ihCbuOlCDsNP9V4CoqbbBwa55i1AosRYeVCzW0BJtSsje/4NQwSFBH0PjMPs8nhLkwi+ht1tiqBA/wt/MsM86irTQ3P0hvK6XgWr0b8srWYJ93h7Aglm58K8sr7C2EolYFN63lk7Wn4DgRktqw5ql993jU= Message-ID: Date: Sat, 26 May 2007 01:53:59 +0530 From: "Satyam Sharma" To: "Linux Kernel Mailing List" Subject: double exclamation (!!) suckage in the kernel MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 828 Lines: 22 Hello, Grepping through the sources I found 500+ occurrences of double exclamation marks before identifier names (such as !!x -- I took care to ignore occurrences of !! inside comment blocks, because there are plenty of that sort too). !! are to be found even in the definitions of common macros such as likely() and unlikely(), which hundreds of eyes must have seen over the last year or so ... Are all these occurrences merely the debris of s/something/!notsomething/g kind of patches or is there some dark, unknown C / gcc wizardry I have absolutely no clue of? Thanks, Satyam - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/