From: Austin Kim <austindh.kim@gmail.com>
To: clm@fb.com, josef@toxicpanda.com, dsterba@suse.com
Cc: linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org,
austindh.kim@gmail.com
Subject: [PATCH] btrfs: fix Wmaybe-uninitialized warning
Date: Tue, 3 Sep 2019 12:30:19 +0900 [thread overview]
Message-ID: <20190903033019.GA149622@LGEARND20B15> (raw)
gcc throws warning message as below:
‘clone_src_i_size’ may be used uninitialized in this function
[-Wmaybe-uninitialized]
#define IS_ALIGNED(x, a) (((x) & ((typeof(x))(a) - 1)) == 0)
^
fs/btrfs/send.c:5088:6: note: ‘clone_src_i_size’ was declared here
u64 clone_src_i_size;
^
The clone_src_i_size is only used as call-by-reference
in a call to get_inode_info().
Silence the warning by initializing clone_src_i_size to 0.
Signed-off-by: Austin Kim <austindh.kim@gmail.com>
---
fs/btrfs/send.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index f856d6c..197536b 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -5085,7 +5085,7 @@ static int clone_range(struct send_ctx *sctx,
struct btrfs_path *path;
struct btrfs_key key;
int ret;
- u64 clone_src_i_size;
+ u64 clone_src_i_size = 0;
/*
* Prevent cloning from a zero offset with a length matching the sector
--
2.6.2
next reply other threads:[~2019-09-03 3:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-03 3:30 Austin Kim [this message]
2019-09-10 16:39 ` [PATCH] btrfs: fix Wmaybe-uninitialized warning Austin Kim
2019-09-17 10:12 ` David Sterba
2019-10-07 15:03 ` David Sterba
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