Re: [libvirt] [PATCH v1 15/40] util: firewall: use VIR_AUTOFREE instead of VIR_FREE for scalar types

On Tue, 24 Jul 2018 at 11:54, Erik Skultety <eskultet(a)redhat.com&gt; wrote: > > On Mon, Jul 23, 2018 at 11:18:07PM +0530, Sukrit Bhatnagar wrote: > > On Mon, 23 Jul 2018 at 18:39, Erik Skultety <eskultet(a)redhat.com&gt; wrote: > > > > > > On Sat, Jul 21, 2018 at 05:36:47PM +0530, Sukrit Bhatnagar wrote: > > > > By making use of GNU C's cleanup attribute handled by the > > > > VIR_AUTOFREE macro for declaring scalar variables, majority > > > > of the VIR_FREE calls can be dropped, which in turn leads to > > > > getting rid of most of our cleanup sections. > > > > > > > > Signed-off-by: Sukrit Bhatnagar <skrtbhtngr(a)gmail.com&gt; > > > > --- > > > > src/util/virfirewall.c | 16 +++++----------- > > > > 1 file changed, 5 insertions(+), 11 deletions(-) > > > > > > > > diff --git a/src/util/virfirewall.c b/src/util/virfirewall.c > > > > index dfd792f..b4a4d06 100644 > > > > --- a/src/util/virfirewall.c > > > > +++ b/src/util/virfirewall.c > > > > @@ -511,7 +511,7 @@ void virFirewallRuleAddArgFormat(virFirewallPtr firewall, > > > > virFirewallRulePtr rule, > > > > const char *fmt, ...) > > > > { > > > > - char *arg; > > > > + VIR_AUTOFREE(char *) arg = NULL; > > > > va_list list; > > > > > > > > VIR_FIREWALL_RULE_RETURN_IF_ERROR(firewall, rule); > > > > @@ -525,13 +525,11 @@ void virFirewallRuleAddArgFormat(virFirewallPtr firewall, > > > > > > > > va_end(list); > > > > > > > > - VIR_FREE(arg); > > > > return; > > > > > > > > no_memory: > > > > firewall->err = ENOMEM; > > > > va_end(list); > > > > - VIR_FREE(arg); > > > > > > There could be an additional patch replacing the no_memory label with 'cleanup' > > > with the obvious adjustments. > > > > There are many functions in virfirewall.c where no_memory is used > > instead of cleanup. > > So I should change either all of them, or none of them. > > Yep, so it should be all of them. Also, according to libvirt hacking page, no_memory is a standard label [1]. Should we replace it then? [1]: https://libvirt.org/hacking.html#goto