linux-kernel - [PATCH 2/7] checkpatch: suppress errors triggered by short patch

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Message-Id: <1220376314-15180-3-git-send-email-apw@shadowen.org>
Date:	Tue,  2 Sep 2008 18:25:09 +0100
From:	Andy Whitcroft <apw@...dowen.org>
To:	Andrew Morton <akpm@...l.org>
Cc:	Randy Dunlap <rdunlap@...otime.net>,
	Joel Schopp <jschopp@...tin.ibm.com>,
	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Andy Whitcroft <apw@...dowen.org>,
	Julien Brunel <brunel@...u.dk>
Subject: [PATCH 2/7] checkpatch: suppress errors triggered by short patch

When the last hunk of a patch is short it will trigger errors from
checkpatch:

    Use of uninitialized value in pattern match (m//)
	    at /usr/local/bin/checkpatch.pl line 394.
    Use of uninitialized value in concatenation (.) or string
	    at /usr/local/bin/checkpatch.pl line 397.
    Use of uninitialized value in pattern match (m//)

Avoid touching beyond the last line.  Reported by Julien Brunel.

Signed-off-by: Andy Whitcroft <apw@...dowen.org>
Cc: Julien Brunel <brunel@...u.dk>
---
 scripts/checkpatch.pl |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 457f874..5382f72 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -408,6 +408,7 @@ sub ctx_statement_block {
 		# context.
 		if ($off >= $len) {
 			for (; $remain > 0; $line++) {
+				last if (!defined $lines[$line]);
 				next if ($lines[$line] =~ /^-/);
 				$remain--;
 				$loff = $len;
-- 
1.6.0.rc1.258.g80295

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