Add annotations to printf-like functions

The ISC_FORMAT_PRINTF() macro will make sure that gcc checks if these
functions are used correctly. Also fix bugs that were found along the
way.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/log.c b/src/log.c
index 3bcd767..bdf2745 100644
--- a/src/log.c
+++ b/src/log.c
@@ -19,6 +19,8 @@
 
 #include <stdio.h>
 
+#include <isc/formatcheck.h>
+
 #include <dns/log.h>
 
 #include "log.h"