--- sshguard-2.4.3/src/blocker/blocker.c	2025-02-28 16:18:03.254281287 +0100
+++ sshguard-2.4.3/src/blocker/blocker.c	2025-02-28 16:12:18.456651762 +0100
@@ -61,7 +61,7 @@ list_t limbo;
 list_t offenders;
 
 /* handler for termination-related signals */
-static void sigfin_handler();
+static void sigfin_handler(int sig);
 /* called at exit(): flush blocked addresses and finalize subsystems */
 static void finishup(void);
 
--- sshguard-2.4.3/src/blocker/blocklist.c	2025-02-28 16:18:03.254020175 +0100
+++ sshguard-2.4.3/src/blocker/blocklist.c	2025-02-28 16:13:53.568248681 +0100
@@ -74,7 +74,7 @@ static void unblock_expired() {
     pthread_testcancel();
 }
 
-static void *unblock_loop() {
+static void *unblock_loop(void *unused) {
     while (1) {
         /* wait some time, at most opts.pardon_threshold/3 + 1 sec */
         sleep(1 + ((unsigned int)rand() % (1 + opts.pardon_threshold / 2)));
--- sshguard-2.4.3/src/blocker/sshguard_whitelist.c	2025-02-28 16:18:03.254395547 +0100
+++ sshguard-2.4.3/src/blocker/sshguard_whitelist.c	2025-02-28 16:16:32.670247184 +0100
@@ -76,7 +76,7 @@ static int match_ip6(const struct in6_ad
     return 1;
 }
 
-static size_t whitelist_meter() { return sizeof(addrblock_t); }
+static size_t whitelist_meter(const void *unused) { return sizeof(addrblock_t); }
 
 static int whitelist_compare(const void *a, const void *b) {
     int ret;
--- sshguard-2.4.3/src/parser/attack_parser.y	2025-02-28 16:18:03.252700675 +0100
+++ sshguard-2.4.3/src/parser/attack_parser.y	2025-02-28 16:17:47.406716234 +0100
@@ -27,7 +27,7 @@
 #define DEFAULT_ATTACKS_DANGEROUSNESS           10
 
  /* stuff exported by the scanner */
-extern void scanner_init();
+extern void scanner_init(char *str);
 extern void scanner_fin();
 extern int yylex();