Use hardening option to add only hardening flags

[tinc] / src / tincctl.h

diff --git a/src/tincctl.h b/src/tincctl.h
index 9bacc46..94df21d 100644 (file)
--- a/src/tincctl.h
+++ b/src/tincctl.h
@@ -49,7 +49,7 @@ extern const var_t variables[];
 extern size_t rstrip(char *value);
 extern char *get_my_name(bool verbose) ATTR_MALLOC;
 extern bool connect_tincd(bool verbose);
-extern bool sendline(int fd, const char *format, ...);
+extern bool sendline(int fd, const char *format, ...) ATTR_FORMAT(printf, 2, 3);
 extern bool recvline(int fd, char *line, size_t len);
 extern int check_port(const char *name);