linux-kernel - [PATCH] rtnetlink: avoid 0 sized arrays

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Date:	Tue, 24 Feb 2015 14:14:35 -0500
From:	Sasha Levin <sasha.levin@...cle.com>
To:	linux-kernel@...r.kernel.org
Cc:	Sasha Levin <sasha.levin@...cle.com>,
	"David S. Miller" <davem@...emloft.net>,
	Nicolas Dichtel <nicolas.dichtel@...nd.com>,
	Jiri Pirko <jiri@...nulli.us>, Thomas Graf <tgraf@...g.ch>,
	Jamal Hadi Salim <jhs@...atatu.com>,
	Roopa Prabhu <roopa@...ulusnetworks.com>,
	Cong Wang <cwang@...pensource.com>,
	Daniel Borkmann <daniel@...earbox.net>,
	netdev@...r.kernel.org (open list:NETWORKING [GENERAL])
Subject: [PATCH] rtnetlink: avoid 0 sized arrays

Arrays (when not in a struct) "shall have a value greater than zero".

GCC complains when it's not the case here.

Fixes: ba7d49b1f0 ("rtnetlink: provide api for getting and setting slave info")
Signed-off-by: Sasha Levin <sasha.levin@...cle.com>
---
 net/core/rtnetlink.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index ab293a3..1385de0 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2012,8 +2012,8 @@ replay:
 	}
 
 	if (1) {
-		struct nlattr *attr[ops ? ops->maxtype + 1 : 0];
-		struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 0];
+		struct nlattr *attr[ops ? ops->maxtype + 1 : 1];
+		struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1];
 		struct nlattr **data = NULL;
 		struct nlattr **slave_data = NULL;
 		struct net *dest_net, *link_net = NULL;
-- 
1.7.10.4

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