From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760553AbbJ3TF7 (ORCPT ); Fri, 30 Oct 2015 15:05:59 -0400 Received: from smtprelay0002.hostedemail.com ([216.40.44.2]:56028 "EHLO smtprelay.hostedemail.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758758AbbJ3TF5 (ORCPT ); Fri, 30 Oct 2015 15:05:57 -0400 X-Session-Marker: 6A6F6540706572636865732E636F6D X-Spam-Summary: 2,0,0,,d41d8cd98f00b204,joe@perches.com,:::::::,RULES_HIT:41:355:379:541:800:960:973:982:988:989:1260:1277:1311:1313:1314:1345:1359:1373:1437:1515:1516:1518:1534:1542:1593:1594:1711:1730:1747:1777:1792:2197:2199:2393:2559:2562:2828:3138:3139:3140:3141:3142:3352:3653:3865:3867:3868:3871:4321:4605:5007:6261:7903:8957:10004:10400:10848:11658:11914:12043:12517:12519:12555:12663:12679:13095:13161:13229:14394:21067:21080:21221:30054:30070,0,RBL:none,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:2,LUA_SUMMARY:none X-HE-Tag: fact94_8affd59a4da31 X-Filterd-Recvd-Size: 3145 Message-ID: <1446231954.2757.203.camel@perches.com> Subject: [PATCH] checkpatch: Improve the unnecessary initialisers tests From: Joe Perches To: Andy Whitcroft , Andrew Morton Cc: shailendra.v@samsung.com, linux-kernel@vger.kernel.org Date: Fri, 30 Oct 2015 12:05:54 -0700 In-Reply-To: <20151030125622.GD13734@bark> References: <1446204304-23107-1-git-send-email-shailendra.v@samsung.com> <20151030125622.GD13734@bark> Content-Type: text/plain; charset="ISO-8859-1" X-Mailer: Evolution 3.12.11-0ubuntu3 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Global and static variables don't need to be initialized to 0. There is already a test for this but the output message doesn't mention booleans initialized to false. Improve the output message and the test by adding various forms with possible specific integer types and possible multiple zeros. Miscellanea: o Use a variable to hold the possible 0 test Signed-off-by: Shailendra Verma Signed-off-by: Joe Perches --- scripts/checkpatch.pl | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 2d88cbf9..2b3c228 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -370,6 +370,8 @@ our $typeTypedefs = qr{(?x: $typeKernelTypedefs\b )}; +our $zero_initializer = qr{(?:(?:0[xX])?0+$Int_type?|NULL|false)\b}; + our $logFunctions = qr{(?x: printk(?:_ratelimited|_once|)| (?:[a-z0-9]+_){1,2}(?:printk|emerg|alert|crit|err|warning|warn|notice|info|debug|dbg|vdbg|devel|cont|WARN)(?:_ratelimited|_once|)| @@ -3334,21 +3336,20 @@ sub process { } # check for global initialisers. - if ($line =~ /^\+$Type\s*$Ident(?:\s+$Modifier)*\s*=\s*(?:0|NULL|false)\s*;/) { + if ($line =~ /^\+$Type\s*$Ident(?:\s+$Modifier)*\s*=\s*($zero_initializer)\s*;/) { if (ERROR("GLOBAL_INITIALISERS", - "do not initialise globals to 0 or NULL\n" . - $herecurr) && + "do not initialise globals to $1\n" . $herecurr) && $fix) { - $fixed[$fixlinenr] =~ s/(^.$Type\s*$Ident(?:\s+$Modifier)*)\s*=\s*(0|NULL|false)\s*;/$1;/; + $fixed[$fixlinenr] =~ s/(^.$Type\s*$Ident(?:\s+$Modifier)*)\s*=\s*$zero_initializer\s*;/$1;/; } } # check for static initialisers. - if ($line =~ /^\+.*\bstatic\s.*=\s*(0|NULL|false)\s*;/) { + if ($line =~ /^\+.*\bstatic\s.*=\s*($zero_initializer)\s*;/) { if (ERROR("INITIALISED_STATIC", - "do not initialise statics to 0 or NULL\n" . + "do not initialise statics to $1\n" . $herecurr) && $fix) { - $fixed[$fixlinenr] =~ s/(\bstatic\s.*?)\s*=\s*(0|NULL|false)\s*;/$1;/; + $fixed[$fixlinenr] =~ s/(\bstatic\s.*?)\s*=\s*$zero_initializer\s*;/$1;/; } }