On Fri, Oct 25, 2013 at 11:41 PM, Stephen Hemminger
<step...@networkplumber.org> wrote:
> On Fri, 25 Oct 2013 15:49:18 +0800
> Zhi Yong Wu <zwu.ker...@gmail.com> wrote:
>
>> From: Zhi Yong Wu <wu...@linux.vnet.ibm.com>
>>
>> drivers/net/vxlan.c: In function ‘vxlan_sock_add’:
>> drivers/net/vxlan.c:2298:11: warning: ‘sock’ may be used uninitialized in
>> this function [-Wmaybe-uninitialized]
>> drivers/net/vxlan.c:2275:17: note: ‘sock’ was declared here
>> LD drivers/net/built-in.o
>>
>> Signed-off-by: Zhi Yong Wu <wu...@linux.vnet.ibm.com>
>> ---
>> drivers/net/vxlan.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
>> index 2ef5b62..e15f1af 100644
>> --- a/drivers/net/vxlan.c
>> +++ b/drivers/net/vxlan.c
>> @@ -2272,7 +2272,7 @@ static struct vxlan_sock *vxlan_socket_create(struct
>> net *net, __be16 port,
>> {
>> struct vxlan_net *vn = net_generic(net, vxlan_net_id);
>> struct vxlan_sock *vs;
>> - struct socket *sock;
>> + struct socket *sock = NULL;
>> struct sock *sk;
>> int rc = 0;
>> unsigned int h;
>
> This only happens with certain versions of Gcc which have buggy dependency
> analysis. It doesn't happen with Gcc 4.7, think it only shows up in 4.4.
> I would rather not fix the warning this way since it risks masking later bugs
> if this code ever changes.
Gcc version is 4.7.2 on my box, this warning took palce.
# gcc -v
Using built-in specs.
COLLECT_GCC=gcc
...
gcc version 4.7.2 20120921 (Red Hat 4.7.2-2) (GCC)
--
Regards,
Zhi Yong Wu
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