linux-kernel - linux-next: build failure after merge of the akpm-current tree

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Date:	Fri, 26 Sep 2014 20:17:04 +1000
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Guenter Roeck <linux@...ck-us.net>,
	Oleg Nesterov <oleg@...hat.com>,
	Josh Triplett <josh@...htriplett.org>
Subject: linux-next: build failure after merge of the akpm-current tree

Hi Andrew,

After merging the akpm-current tree, today's linux-next build (powerpc
ppc64_defconfig) failed like this:

In file included from arch/powerpc/kernel/asm-offsets.c:16:0:
include/linux/signal.h: In function 'sigisemptyset':
include/linux/signal.h:79:3: error: implicit declaration of function 'BUILD_BUG' [-Werror=implicit-function-declaration]
   BUILD_BUG();
   ^

Caused by commit 7e52cdba7e69 ("signal: use BUILD_BUG() instead of
_NSIG_WORDS_is_unsupported_size()").

See Rule 1 in Documentation/SubmitChecklist.

Thanks to Guenter for the heads up.

I have added the following patch for today (hopefully it does not cause
more problems).

From: Stephen Rothwell <sfr@...b.auug.org.au>
Date: Fri, 26 Sep 2014 20:08:12 +1000
Subject: [PATCH] signal.h: using BUILD_BUG requires including bug.h

Signed-off-by: Stephen Rothwell <sfr@...b.auug.org.au>
---
 include/linux/signal.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/linux/signal.h b/include/linux/signal.h
index 14acfd59ed1b..ab1e0392b5ac 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -2,6 +2,7 @@
 #define _LINUX_SIGNAL_H
 
 #include <linux/list.h>
+#include <linux/bug.h>
 #include <uapi/linux/signal.h>
 
 struct task_struct;
-- 
2.1.1

-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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