linux-kernel - [PATCH] checkpatch: fix complex macro false positive for escaped constant char

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Message-ID: <1402247478.6328.5.camel@joe-AO725>
Date:	Sun, 08 Jun 2014 10:11:18 -0700
From:	Joe Perches <joe@...ches.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	gregkh@...uxfoundation.org, devel@...verdev.osuosl.org,
	linux-kernel@...r.kernel.org, Choi Gi-yong <yong@...y.org>,
	Andy Whitcroft <apw@...onical.com>
Subject: [PATCH] checkpatch: fix complex macro false positive for escaped
 constant char

A single escaped constant char is not a complex macro.

Signed-off-by: Joe Perches <joe@...ches.com>
---
On Sun, 2014-06-08 at 23:12 +0900, Choi Gi-yong wrote:
> diff --git a/drivers/staging/speakup/speakup_acntpc.c b/drivers/staging/speakup/speakup_acntpc.c
[]
> @@ -35,7 +35,7 @@
[]
> -#define PROCSPEECH '\r'
> +#define PROCSPEECH ('\r')

checkpatch false positive, doesn't need parenthesis

 scripts/checkpatch.pl | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 010b18e..ba92493 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3757,7 +3757,7 @@ sub process {
 			    $dstat !~ /^(?:$Ident|-?$Constant),$/ &&			# 10, // foo(),
 			    $dstat !~ /^(?:$Ident|-?$Constant);$/ &&			# foo();
 			    $dstat !~ /^[!~-]?(?:$Lval|$Constant)$/ &&		# 10 // foo() // !foo // ~foo // -foo // foo->bar // foo.bar->baz
-			    $dstat !~ /^'X'$/ &&					# character constants
+			    $dstat !~ /^'X'$/ && $dstat !~ /^'XX'$/ &&			# character constants
 			    $dstat !~ /$exceptions/ &&
 			    $dstat !~ /^\.$Ident\s*=/ &&				# .foo =
 			    $dstat !~ /^(?:\#\s*$Ident|\#\s*$Constant)\s*$/ &&		# stringification #foo


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