On Tue, Sep 11, 2018 at 11:37:45PM +0800, Shi Lei wrote:
> On 2018-09-11 at 20:44, Erik Skultety wrote:
> >On Mon, Sep 10, 2018 at 11:47:53AM +0800, Shi Lei wrote:
> >> By making use of GNU C's cleanup attribute handled by the VIR_AUTOCLOSE macro,
> >> many of the VIR_FORCE_CLOSE calls can be dropped, which in turn leads to
> >> getting rid of many of our cleanup sections.
> >>
> >> Signed-off-by: Shi Lei <shi_lei@xxxxxxxxxxxxxx>
> >> ---
> >> static int
> >> @@ -909,9 +867,9 @@ char *virNetDevGetName(int ifindex)
> >> #if defined(SIOCGIFINDEX) && defined(HAVE_STRUCT_IFREQ)
> >> int virNetDevGetIndex(const char *ifname, int *ifindex)
> >> {
> >> - int ret = -1;
> >> struct ifreq ifreq;
> >> - int fd = socket(VIR_NETDEV_FAMILY, SOCK_DGRAM, 0);
> >> + VIR_AUTOCLOSE(fd);
> >> + socket(VIR_NETDEV_FAMILY, SOCK_DGRAM, 0);
> >
> >^this could not potentially work...
> >
> >Erik
>
> Sorry! I'm too careless.
>
> I think that a new syntax-check rule might make sense.
> This rule checks below:
>
> type foo(a0, a1 ...);
>
> [type] var = foo(a0, a1, ...); /* It's OK */
> ignore_value(foo(a0, a1, ...)); /* It's OK */
>
> foo(a0, a1, ...); /* Report this usage */
but this would go away with the syntax-check rule you proposed in you response
to the first patch? If not, then would you be more specific to help me
understand the problem more?
Thanks,
Erik
>
> And it takes effect before compilation and even it's in the inactive
> side of the #if-#else conditons.
>
> It would not check macros since their name are upper case and
> we don't care for the function as condition in if-else statement.
>
> How about it?
> And I can try it if it's a bit helpful ...
>
> Shi Lei
>
>
>
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