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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20201003001151.1306-1-shipujin.t@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3.10.20 г. 3:11 ч., Pujin Shi wrote: > For older versions of gcc, the array = {0}; will cause warnings: > > fs/btrfs/tree-checker.c: In function 'check_root_item': > fs/btrfs/tree-checker.c:1038:9: warning: missing braces around initializer [-Wmissing-braces] > struct btrfs_root_item ri = { 0 }; > ^ > fs/btrfs/tree-checker.c:1038:9: warning: (near initialization for 'ri.inode') [-Wmissing-braces] > > 1 warnings generated > > Fixes: 443b313c7ff8 ("btrfs: tree-checker: fix false alert caused by legacy btrfs root item") > Signed-off-by: Pujin Shi This is a compiler artifact, please see: http://www.ex-parrot.com/~chris/random/initialise.html ALso having an empty initialization list like = {} while valid for gcc is actually invalid according to the official standard. Check ISO C Standard section 6.7.9 for the correct syntax of initializer-list. IOW - NAK. > --- > fs/btrfs/tree-checker.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/fs/btrfs/tree-checker.c b/fs/btrfs/tree-checker.c > index f0ffd5ee77bd..5028b3af308c 100644 > --- a/fs/btrfs/tree-checker.c > +++ b/fs/btrfs/tree-checker.c > @@ -1035,7 +1035,7 @@ static int check_root_item(struct extent_buffer *leaf, struct btrfs_key *key, > int slot) > { > struct btrfs_fs_info *fs_info = leaf->fs_info; > - struct btrfs_root_item ri = { 0 }; > + struct btrfs_root_item ri = {}; > const u64 valid_root_flags = BTRFS_ROOT_SUBVOL_RDONLY | > BTRFS_ROOT_SUBVOL_DEAD; > int ret; >