linux-kernel - [PATCH 4/4] Swap inclusion order of util.h and string.h in util/string.c

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Date:	Sun,  4 Apr 2010 16:36:44 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Hitoshi Mitake <mitake@....info.waseda.ac.jp>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Paul Mackerras <paulus@...ba.org>,
	Arnaldo Carvalho de Melo <acme@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH 4/4] Swap inclusion order of util.h and string.h in util/string.c

From: Hitoshi Mitake <mitake@....info.waseda.ac.jp>

Currently util/string.c includes headers in this order: string.h, util.h
But this causes a build error because __USE_GNU definition
is needed for strndup() definition:

	% make -j
	touch .perf.dev.null
	    CC util/string.o
	cc1: warnings being treated as errors
	util/string.c: In function ‘argv_split’:
	util/string.c:171: error: implicit declaration of function ‘strndup’
	util/string.c:171: error: incompatible implicit declaration of built-in function ‘strndup’

So this patch swaps the headers inclusion order.
util.h defines _GNU_SOURCE, and /usr/include/features.h defines
__USE_GNU as 1 if _GNU_SOURCE is defined.

Signed-off-by: Hitoshi Mitake <mitake@....info.waseda.ac.jp>
Cc: Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Arnaldo Carvalho de Melo <acme@...hat.com>
LKML-Reference: <1270368798-27232-1-git-send-email-mitake@....info.waseda.ac.jp>
Signed-off-by: Frederic Weisbecker <fweisbec@...il.com>
---
 tools/perf/util/string.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/tools/perf/util/string.c b/tools/perf/util/string.c
index d438924..0409fc7 100644
--- a/tools/perf/util/string.c
+++ b/tools/perf/util/string.c
@@ -1,5 +1,5 @@
-#include "string.h"
 #include "util.h"
+#include "string.h"
 
 #define K 1024LL
 /*
-- 
1.6.2.3

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