Messages in this thread Patch in this message | | | Date | Tue, 3 Sep 2019 12:30:19 +0900 | From | Austin Kim <> | Subject | [PATCH] btrfs: fix Wmaybe-uninitialized warning |
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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
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