On 2018-09-12 at 16:25, Shi Lei wrote: On 2018-09-12 at 15:21, Erik Skultety wrote:
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@massclouds.com> --- 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
Sorry! I was muddle-headed last night. It is not the syntax-check rule in my response to the first patch. This is another rule and I wanted to introduce it to avoid some faults then. Today I find that it is not easy as I thought. Please ignore it ... :-) Shi Lei
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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