linux-kernel - [PATCH] fs: wipe off the compiler warn

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Message-ID: <1469803501-44148-1-git-send-email-zhongjiang@huawei.com>
Date:	Fri, 29 Jul 2016 22:45:01 +0800
From:	zhongjiang <zhongjiang@...wei.com>
To:	<akpm@...ux-foundation.org>
CC:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] fs: wipe off the compiler warn

From: zhong jiang <zhongjiang@...wei.com>

when compile the kenrel code, I happens to the following warn.
fs/reiserfs/ibalance.c:1156:2: warning: ‘new_insert_key’ may be used
uninitialized in this function.
memcpy(new_insert_key_addr, &new_insert_key, KEY_SIZE);
^
The patch just fix it to avoid the warn.

Signed-off-by: zhong jiang <zhongjiang@...wei.com>
---
 fs/reiserfs/ibalance.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/reiserfs/ibalance.c b/fs/reiserfs/ibalance.c
index b751eea..512ce95 100644
--- a/fs/reiserfs/ibalance.c
+++ b/fs/reiserfs/ibalance.c
@@ -818,7 +818,7 @@ int balance_internal(struct tree_balance *tb,
 	int order;
 	int insert_num, n, k;
 	struct buffer_head *S_new;
-	struct item_head new_insert_key;
+	struct item_head uninitialized_var(new_insert_key);
 	struct buffer_head *new_insert_ptr = NULL;
 	struct item_head *new_insert_key_addr = insert_key;
 
-- 
1.8.3.1