[PATCH v2 iproute2-next 01/11] tc: add format attribute to tc_print_rate

[Stephen Hemminger <stephen@networkplumber.org>]

From: Stephen Hemminger <stephen@networkplumber.org>

This catches future errors and silences warning from Clang.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 tc/tc_util.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tc/tc_util.c b/tc/tc_util.c
index 48065897cee7..6d5eb754831a 100644
--- a/tc/tc_util.c
+++ b/tc/tc_util.c
@@ -247,7 +247,8 @@ int get_percent_rate64(__u64 *rate, const char *str, const char *dev)
 	return get_rate64(rate, r_str);
 }
 
-void tc_print_rate(enum output_type t, const char *key, const char *fmt,
+void __attribute__((format(printf, 3, 0)))
+tc_print_rate(enum output_type t, const char *key, const char *fmt,
 		   unsigned long long rate)
 {
 	print_rate(use_iec, t, key, fmt, rate);
-- 
2.30.2