On Sat, Sep 17, 2016 at 12:04 PM, kbuild test robot <l...@intel.com> wrote:
> Hi Yuchung,
>
> [auto build test ERROR on net-next/master]
>
> url:
> https://github.com/0day-ci/linux/commits/Neal-Cardwell/tcp-BBR-congestion-control-algorithm/20160918-014058
> config: x86_64-randconfig-s2-09180225 (attached as .config)
> compiler: gcc-4.4 (Debian 4.4.7-8) 4.4.7
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All error/warnings (new ones prefixed by >>):
>
> net/ipv4/tcp_input.c: In function 'tcp_ack':
>>> net/ipv4/tcp_input.c:3559: error: unknown field 'v64' specified in
>>> initializer
>>> net/ipv4/tcp_input.c:3559: warning: missing braces around initializer
> net/ipv4/tcp_input.c:3559: warning: (near initialization for
> 'rs.prior_mstamp.<anonymous>')
>
> vim +/v64 +3559 net/ipv4/tcp_input.c
>
> 3553 /* This routine deals with incoming acks, but not outgoing ones. */
> 3554 static int tcp_ack(struct sock *sk, const struct sk_buff *skb, int
> flag)
> 3555 {
> 3556 struct inet_connection_sock *icsk = inet_csk(sk);
> 3557 struct tcp_sock *tp = tcp_sk(sk);
> 3558 struct tcp_sacktag_state sack_state;
>> 3559 struct rate_sample rs = { .prior_mstamp.v64 = 0,
>> .prior_delivered = 0 };
>
Arg, silly compilers out there.
We can omit prior_mstamp , as the compiler will zero fields anyway
struct rate_sample rs = { .prior_delivered = 0 };
