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-rw-r--r--src/common/nullpo.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/common/nullpo.c b/src/common/nullpo.c
index de10517..8c7c405 100644
--- a/src/common/nullpo.c
+++ b/src/common/nullpo.c
@@ -47,6 +47,8 @@ void nullpo_info (const char *file, int line, const char *func)
/// Actual output function
static void nullpo_info_core (const char *file, int line, const char *func,
+ const char *fmt, va_list ap) __attribute__((format(printf, 4, 0)));
+static void nullpo_info_core (const char *file, int line, const char *func,
const char *fmt, va_list ap)
{
if (!file)