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[v4,iproute2-next,10/11] libbpf: fix clang warning about format non-literal

Message ID 20220120211153.189476-11-stephen@networkplumber.org (mailing list archive)
State Accepted
Commit bf71c8f214b786f3180ebb7a6444ca75c75d8bfd
Delegated to: David Ahern
Headers show
Series fix clang warnings | expand

Checks

Context Check Description
netdev/tree_selection success Not a local patch

Commit Message

Stephen Hemminger Jan. 20, 2022, 9:11 p.m. UTC 
Add format attribute to the format string in print routines.

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
---
 lib/bpf_libbpf.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)
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Patch

diff --git a/lib/bpf_libbpf.c b/lib/bpf_libbpf.c
index 50ef16bd4612..921716aec8c6 100644
--- a/lib/bpf_libbpf.c
+++ b/lib/bpf_libbpf.c
@@ -23,12 +23,14 @@ 
 
 #include "bpf_util.h"
 
-static int verbose_print(enum libbpf_print_level level, const char *format, va_list args)
+static int __attribute__((format(printf, 2, 0)))
+verbose_print(enum libbpf_print_level level, const char *format, va_list args)
 {
 	return vfprintf(stderr, format, args);
 }
 
-static int silent_print(enum libbpf_print_level level, const char *format, va_list args)
+static int __attribute__((format(printf, 2, 0)))
+silent_print(enum libbpf_print_level level, const char *format, va_list args)
 {
 	if (level > LIBBPF_WARN)
 		return 0;