* static prototypes
*/
-static int command(const char *, ...);
+static int command(const char *, ...) CHECK_PRINTF(1, 2);
static int multiline(void);
-static int traverse (int (*)(void *, char *), void *closure, const char *, ...);
-static int vcommand(const char *, va_list);
+static int traverse(int (*)(void *, char *), void *closure,
+ const char *, ...) CHECK_PRINTF(3, 4);
+static int vcommand(const char *, va_list) CHECK_PRINTF(1, 0);
static int pop_getline (char *, int, netsec_context *);
static int pop_sasl_callback(enum sasl_message_type, unsigned const char *,
unsigned int, unsigned char **, unsigned int *,