[LTP] [PATCH 2/2] tst_net_vars.c: Enlarge buffer to fix format overflow warnings

[Petr Vorel <pvorel@suse.cz>]

tst_net_vars.c:230:18: warning: ‘.0.0’ directive writing 4 bytes into a region of size between 1 and 128 [-Wformat-overflow=]
  sprintf(buf, "%s.0.0", net_unused);
                  ^~~~
In file included from /usr/include/stdio.h:867,
                 from tst_net_vars.c:26:
/usr/include/bits/stdio2.h:36:10: note: ‘__builtin___sprintf_chk’ output between 5 and 132 bytes into a destination of size 128

tst_net_vars.c:294:18: warning: ‘::’ directive writing 2 bytes into a region of size between 1 and 128 [-Wformat-overflow=]
  sprintf(buf, "%s::", net_unused);
                  ^~
In file included from /usr/include/stdio.h:867,
                 from tst_net_vars.c:26:
/usr/include/bits/stdio2.h:36:10: note: ‘__builtin___sprintf_chk’ output between 3 and 130 bytes into a destination of size 128

Fixes: d18e135d0 ("network: Add tools for setup IP related environment
variables")

Signed-off-by: Petr Vorel <pvorel@suse.cz>
---
 testcases/lib/tst_net_vars.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testcases/lib/tst_net_vars.c b/testcases/lib/tst_net_vars.c
index da9a4e64c..43cd92bcf 100644
--- a/testcases/lib/tst_net_vars.c
+++ b/testcases/lib/tst_net_vars.c
@@ -220,7 +220,7 @@ static char *get_ipv4_net16_unused(const struct in_addr *ip,
 	unsigned int prefix)
 {
 	struct in_addr mask, network;
-	char buf[128], net_unused[128];
+	char buf[132], net_unused[128];
 
 	mask = prefix2mask(prefix);
 	network = calc_network(ip, &mask);
@@ -274,7 +274,7 @@ static char *get_ipv6_net32_unused(const struct in6_addr *ip6,
 {
 	int i, j;
 	struct in6_addr mask, network;
-	char buf[128], net_unused[128];
+	char buf[130], net_unused[128];
 
 	memset(&mask, 0x0, sizeof(mask));
 
-- 
2.21.0