From: Joe Perches <joe@perches.com>
Date: Tue, 26 Oct 2010 21:23:20 +0000 (-0700)
Subject: scripts/checkpatch.pl: add warnings for static char that could be static const char
X-Git-Tag: v2.6.37-rc1~105^2~1
X-Git-Url: https://bbs.cooldavid.org/git/?p=net-next-2.6.git;a=commitdiff_plain;h=cb710eca6820493add0ddd3d7e8e3ee53f2b6e57

scripts/checkpatch.pl: add warnings for static char that could be static const char

Add warnings for possible missing const uses of
	static char foo[] = "bar"
    that could be
	static const char foo[] = "bar"
and
	static const char *foo[] = {"bar", "baz"}
    that could be
	static const char * const foo[] = {"bar", "baz"}

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Mike Frysinger <vapier.adi@gmail.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index c1e7fb3eab4..2ec5fc6a404 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1869,6 +1869,18 @@ sub process {
 				$herecurr);
 		}
 
+# check for static const char * arrays.
+		if ($line =~ /\bstatic\s+const\s+char\s*\*\s*(\w+)\s*\[\s*\]\s*=\s*/) {
+			WARN("static const char * array should probably be static const char * const\n" .
+				$herecurr);
+               }
+
+# check for static char foo[] = "bar" declarations.
+		if ($line =~ /\bstatic\s+char\s+(\w+)\s*\[\s*\]\s*=\s*"/) {
+			WARN("static char array declaration should probably be static const char\n" .
+				$herecurr);
+               }
+
 # check for new typedefs, only function parameters and sparse annotations
 # make sense.
 		if ($line =~ /\btypedef\s/ &&