diff --git a/src/bsd/device.c b/src/bsd/device.c
index 54282626..fbc75937 100644
--- a/src/bsd/device.c
+++ b/src/bsd/device.c
@@ -198,18 +198,19 @@ static bool setup_device(void) {
 
 	// Guess what the corresponding interface is called
 
-	char *realname;
+	char *realname = NULL;
 
 #if defined(HAVE_FDEVNAME)
-	realname = fdevname(device_fd) ? : device;
+	realname = fdevname(device_fd);
 #elif defined(HAVE_DEVNAME)
 	struct stat buf;
 	if(!fstat(device_fd, &buf))
-		realname = devname(buf.st_rdev, S_IFCHR) ? : device;
-#else
-	realname = device;
+		realname = devname(buf.st_rdev, S_IFCHR);
 #endif
 
+	if(!realname)
+		realname = device;
+
 	if(!get_config_string(lookup_config(config_tree, "Interface"), &iface))
 		iface = xstrdup(strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname);
 	else if(strcmp(iface, strrchr(realname, '/') ? strrchr(realname, '/') + 1 : realname))
diff --git a/src/ed25519/sc.c b/src/ed25519/sc.c
index 42cfc2da..3364de42 100644
--- a/src/ed25519/sc.c
+++ b/src/ed25519/sc.c
@@ -81,42 +81,36 @@ void sc_reduce(unsigned char *s) {
     s14 -= s23 * 997805;
     s15 += s23 * 136657;
     s16 -= s23 * 683901;
-    s23 = 0;
     s10 += s22 * 666643;
     s11 += s22 * 470296;
     s12 += s22 * 654183;
     s13 -= s22 * 997805;
     s14 += s22 * 136657;
     s15 -= s22 * 683901;
-    s22 = 0;
     s9 += s21 * 666643;
     s10 += s21 * 470296;
     s11 += s21 * 654183;
     s12 -= s21 * 997805;
     s13 += s21 * 136657;
     s14 -= s21 * 683901;
-    s21 = 0;
     s8 += s20 * 666643;
     s9 += s20 * 470296;
     s10 += s20 * 654183;
     s11 -= s20 * 997805;
     s12 += s20 * 136657;
     s13 -= s20 * 683901;
-    s20 = 0;
     s7 += s19 * 666643;
     s8 += s19 * 470296;
     s9 += s19 * 654183;
     s10 -= s19 * 997805;
     s11 += s19 * 136657;
     s12 -= s19 * 683901;
-    s19 = 0;
     s6 += s18 * 666643;
     s7 += s18 * 470296;
     s8 += s18 * 654183;
     s9 -= s18 * 997805;
     s10 += s18 * 136657;
     s11 -= s18 * 683901;
-    s18 = 0;
     carry6 = (s6 + (1 << 20)) >> 21;
     s7 += carry6;
     s6 -= shl64(carry6, 21);
@@ -156,35 +150,30 @@ void sc_reduce(unsigned char *s) {
     s8 -= s17 * 997805;
     s9 += s17 * 136657;
     s10 -= s17 * 683901;
-    s17 = 0;
     s4 += s16 * 666643;
     s5 += s16 * 470296;
     s6 += s16 * 654183;
     s7 -= s16 * 997805;
     s8 += s16 * 136657;
     s9 -= s16 * 683901;
-    s16 = 0;
     s3 += s15 * 666643;
     s4 += s15 * 470296;
     s5 += s15 * 654183;
     s6 -= s15 * 997805;
     s7 += s15 * 136657;
     s8 -= s15 * 683901;
-    s15 = 0;
     s2 += s14 * 666643;
     s3 += s14 * 470296;
     s4 += s14 * 654183;
     s5 -= s14 * 997805;
     s6 += s14 * 136657;
     s7 -= s14 * 683901;
-    s14 = 0;
     s1 += s13 * 666643;
     s2 += s13 * 470296;
     s3 += s13 * 654183;
     s4 -= s13 * 997805;
     s5 += s13 * 136657;
     s6 -= s13 * 683901;
-    s13 = 0;
     s0 += s12 * 666643;
     s1 += s12 * 470296;
     s2 += s12 * 654183;
@@ -277,7 +266,6 @@ void sc_reduce(unsigned char *s) {
     s3 -= s12 * 997805;
     s4 += s12 * 136657;
     s5 -= s12 * 683901;
-    s12 = 0;
     carry0 = s0 >> 21;
     s1 += carry0;
     s0 -= shl64(carry0, 21);
@@ -543,42 +531,36 @@ void sc_muladd(unsigned char *s, const unsigned char *a, const unsigned char *b,
     s14 -= s23 * 997805;
     s15 += s23 * 136657;
     s16 -= s23 * 683901;
-    s23 = 0;
     s10 += s22 * 666643;
     s11 += s22 * 470296;
     s12 += s22 * 654183;
     s13 -= s22 * 997805;
     s14 += s22 * 136657;
     s15 -= s22 * 683901;
-    s22 = 0;
     s9 += s21 * 666643;
     s10 += s21 * 470296;
     s11 += s21 * 654183;
     s12 -= s21 * 997805;
     s13 += s21 * 136657;
     s14 -= s21 * 683901;
-    s21 = 0;
     s8 += s20 * 666643;
     s9 += s20 * 470296;
     s10 += s20 * 654183;
     s11 -= s20 * 997805;
     s12 += s20 * 136657;
     s13 -= s20 * 683901;
-    s20 = 0;
     s7 += s19 * 666643;
     s8 += s19 * 470296;
     s9 += s19 * 654183;
     s10 -= s19 * 997805;
     s11 += s19 * 136657;
     s12 -= s19 * 683901;
-    s19 = 0;
     s6 += s18 * 666643;
     s7 += s18 * 470296;
     s8 += s18 * 654183;
     s9 -= s18 * 997805;
     s10 += s18 * 136657;
     s11 -= s18 * 683901;
-    s18 = 0;
     carry6 = (s6 + (1 << 20)) >> 21;
     s7 += carry6;
     s6 -= shl64(carry6, 21);
@@ -618,35 +600,30 @@ void sc_muladd(unsigned char *s, const unsigned char *a, const unsigned char *b,
     s8 -= s17 * 997805;
     s9 += s17 * 136657;
     s10 -= s17 * 683901;
-    s17 = 0;
     s4 += s16 * 666643;
     s5 += s16 * 470296;
     s6 += s16 * 654183;
     s7 -= s16 * 997805;
     s8 += s16 * 136657;
     s9 -= s16 * 683901;
-    s16 = 0;
     s3 += s15 * 666643;
     s4 += s15 * 470296;
     s5 += s15 * 654183;
     s6 -= s15 * 997805;
     s7 += s15 * 136657;
     s8 -= s15 * 683901;
-    s15 = 0;
     s2 += s14 * 666643;
     s3 += s14 * 470296;
     s4 += s14 * 654183;
     s5 -= s14 * 997805;
     s6 += s14 * 136657;
     s7 -= s14 * 683901;
-    s14 = 0;
     s1 += s13 * 666643;
     s2 += s13 * 470296;
     s3 += s13 * 654183;
     s4 -= s13 * 997805;
     s5 += s13 * 136657;
     s6 -= s13 * 683901;
-    s13 = 0;
     s0 += s12 * 666643;
     s1 += s12 * 470296;
     s2 += s12 * 654183;
@@ -739,7 +716,6 @@ void sc_muladd(unsigned char *s, const unsigned char *a, const unsigned char *b,
     s3 -= s12 * 997805;
     s4 += s12 * 136657;
     s5 -= s12 * 683901;
-    s12 = 0;
     carry0 = s0 >> 21;
     s1 += carry0;
     s0 -= shl64(carry0, 21);
diff --git a/src/ifconfig.c b/src/ifconfig.c
index 7688a3c6..06f2c629 100644
--- a/src/ifconfig.c
+++ b/src/ifconfig.c
@@ -104,13 +104,6 @@ void ifconfig_address(FILE *out, const char *value) {
 		case SUBNET_IPV6: fprintf(out, "ip addr replace %s dev \"$INTERFACE\"\n", address_str); break;
 		default: return;
 	}
-#elif defined(HAVE_BSD)
-	switch(address.type) {
-		case SUBNET_MAC:  fprintf(out, "ifconfig \"$INTERFACE\" link %s\n", address_str); break;
-		case SUBNET_IPV4: fprintf(out, "ifconfig \"$INTERFACE\" %s\n", address_str); break;
-		case SUBNET_IPV6: fprintf(out, "ifconfig \"$INTERFACE\" inet6 %s\n", address_str); break;
-		default: return;
-	}
 #elif defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
 	switch(address.type) {
 		case SUBNET_MAC:  fprintf(out, "ip link set \"$INTERFACE\" address %s\n", address_str); break;
@@ -118,6 +111,13 @@ void ifconfig_address(FILE *out, const char *value) {
 		case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 set address \"$INTERFACE\" static %s\n", address_str); break;
 		default: return;
 	}
+#else // assume BSD
+	switch(address.type) {
+		case SUBNET_MAC:  fprintf(out, "ifconfig \"$INTERFACE\" link %s\n", address_str); break;
+		case SUBNET_IPV4: fprintf(out, "ifconfig \"$INTERFACE\" %s\n", address_str); break;
+		case SUBNET_IPV6: fprintf(out, "ifconfig \"$INTERFACE\" inet6 %s\n", address_str); break;
+		default: return;
+	}
 #endif
 }
 
@@ -152,8 +152,21 @@ void ifconfig_route(FILE *out, const char *value) {
 			default: return;
 		}
 	}
-#elif defined(HAVE_BSD)
-	// BSD route command is silly and doesn't accept an interface name as a destination.
+#elif defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
+	if(*gateway_str) {
+		switch(subnet.type) {
+			case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str); break;
+			case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str); break;
+			default: return;
+		}
+	} else {
+		switch(subnet.type) {
+			case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 add route %s \"%%INTERFACE%%\"\n", subnet_str); break;
+			case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 add route %s \"%%INTERFACE%%\"\n", subnet_str); break;
+			default: return;
+		}
+	}
+#else // assume BSD
 	if(!*gateway_str) {
 		switch(subnet.type) {
 			case SUBNET_IPV4:
@@ -180,19 +193,5 @@ void ifconfig_route(FILE *out, const char *value) {
 		case SUBNET_IPV6: fprintf(out, "route add -inet6 %s %s\n", subnet_str, gateway_str); break;
 		default: return;
 	}
-#elif defined(HAVE_MINGW) || defined(HAVE_CYGWIN)
-	if(*gateway_str) {
-		switch(subnet.type) {
-			case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str); break;
-			case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 add route %s \"%%INTERFACE%%\" %s\n", subnet_str, gateway_str); break;
-			default: return;
-		}
-	} else {
-		switch(subnet.type) {
-			case SUBNET_IPV4: fprintf(out, "netsh inetface ipv4 add route %s \"%%INTERFACE%%\"\n", subnet_str); break;
-			case SUBNET_IPV6: fprintf(out, "netsh inetface ipv6 add route %s \"%%INTERFACE%%\"\n", subnet_str); break;
-			default: return;
-		}
-	}
 #endif
 }
diff --git a/src/info.c b/src/info.c
index 47582282..a5c71191 100644
--- a/src/info.c
+++ b/src/info.c
@@ -72,7 +72,7 @@ static int info_node(int fd, const char *item) {
 	long int last_state_change = 0;
 
 	while(recvline(fd, line, sizeof line)) {
-		int n = sscanf(line, "%d %d %s %s %s port %s %d %d %d %d %x %"PRIx32" %s %s %d %hd %hd %hd %ld", &code, &req, node, id, host, port, &cipher, &digest, &maclength, &compression, &options, &status_union.raw, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
+		int n = sscanf(line, "%d %d %4095s %4095s %4095s port %4095s %d %d %d %d %x %"PRIx32" %4095s %4095s %d %hd %hd %hd %ld", &code, &req, node, id, host, port, &cipher, &digest, &maclength, &compression, &options, &status_union.raw, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
 
 		if(n == 2)
 			break;
@@ -94,7 +94,7 @@ static int info_node(int fd, const char *item) {
 	}
 
 	while(recvline(fd, line, sizeof line)) {
-		if(sscanf(line, "%d %d %s", &code, &req, node) == 2)
+		if(sscanf(line, "%d %d %4095s", &code, &req, node) == 2)
 			break;
 	}
 
@@ -161,7 +161,7 @@ static int info_node(int fd, const char *item) {
 	printf("Edges:       ");
 	sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_EDGES, item);
 	while(recvline(fd, line, sizeof line)) {
-		int n = sscanf(line, "%d %d %s %s", &code, &req, from, to);
+		int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, from, to);
 		if(n == 2)
 			break;
 		if(n != 4) {
@@ -177,7 +177,7 @@ static int info_node(int fd, const char *item) {
 	printf("Subnets:     ");
 	sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
 	while(recvline(fd, line, sizeof line)) {
-		int n = sscanf(line, "%d %d %s %s", &code, &req, subnet, from);
+		int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, subnet, from);
 		if(n == 2)
 			break;
 		if(n != 4) {
@@ -212,7 +212,7 @@ static int info_subnet(int fd, const char *item) {
 
 	sendline(fd, "%d %d %s", CONTROL, REQ_DUMP_SUBNETS, item);
 	while(recvline(fd, line, sizeof line)) {
-		int n = sscanf(line, "%d %d %s %s", &code, &req, netstr, owner);
+		int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, netstr, owner);
 		if(n == 2)
 			break;
 
diff --git a/src/invitation.c b/src/invitation.c
index d8f81b6c..f28898d0 100644
--- a/src/invitation.c
+++ b/src/invitation.c
@@ -252,14 +252,14 @@ int cmd_invite(int argc, char *argv[]) {
 	}
 
 	// If a daemon is running, ensure no other nodes know about this name
-	bool found = false;
 	if(connect_tincd(false)) {
+		bool found = false;
 		sendline(fd, "%d %d", CONTROL, REQ_DUMP_NODES);
 
 		while(recvline(fd, line, sizeof line)) {
 			char node[4096];
 			int code, req;
-			if(sscanf(line, "%d %d %s", &code, &req, node) != 3)
+			if(sscanf(line, "%d %d %4095s", &code, &req, node) != 3)
 				break;
 			if(!strcmp(node, argv[1]))
 				found = true;
@@ -686,7 +686,7 @@ make_names:
 		}
 
 		// Copy the safe variable to the right config file
-		fprintf(variables[i].type & VAR_HOST ? fh : f, "%s = %s\n", l, value);
+		fprintf((variables[i].type & VAR_HOST) ? fh : f, "%s = %s\n", l, value);
 	}
 
 	fclose(f);
@@ -1048,7 +1048,7 @@ next:
 	char hisname[4096] = "";
 	int code, hismajor, hisminor = 0;
 
-	if(!recvline(sock, line, sizeof line) || sscanf(line, "%d %s %d.%d", &code, hisname, &hismajor, &hisminor) < 3 || code != 0 || hismajor != PROT_MAJOR || !check_id(hisname) || !recvline(sock, line, sizeof line) || !rstrip(line) || sscanf(line, "%d ", &code) != 1 || code != ACK || strlen(line) < 3) {
+	if(!recvline(sock, line, sizeof line) || sscanf(line, "%d %4095s %d.%d", &code, hisname, &hismajor, &hisminor) < 3 || code != 0 || hismajor != PROT_MAJOR || !check_id(hisname) || !recvline(sock, line, sizeof line) || !rstrip(line) || sscanf(line, "%d ", &code) != 1 || code != ACK || strlen(line) < 3) {
 		fprintf(stderr, "Cannot read greeting from peer\n");
 		closesocket(sock);
 		goto next;
diff --git a/src/net.c b/src/net.c
index 375fb5e2..7758d9da 100644
--- a/src/net.c
+++ b/src/net.c
@@ -210,7 +210,7 @@ static void timeout_handler(void *data) {
 
 		// timeout during ping
 		if(c->status.pinged) {
-			logger(DEBUG_CONNECTIONS, LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds", c->name, c->hostname, (long)now.tv_sec - c->last_ping_time.tv_sec);
+				logger(DEBUG_CONNECTIONS, LOG_INFO, "%s (%s) didn't respond to PING in %ld seconds", c->name, c->hostname, (long)(now.tv_sec - c->last_ping_time.tv_sec));
 			terminate_connection(c, c->edge);
 			continue;
 		}
diff --git a/src/openssl/cipher.c b/src/openssl/cipher.c
index e362325a..a8032ea0 100644
--- a/src/openssl/cipher.c
+++ b/src/openssl/cipher.c
@@ -137,7 +137,7 @@ bool cipher_encrypt(cipher_t *cipher, const void *indata, size_t inlen, void *ou
 		int len, pad;
 		if(EVP_EncryptInit_ex(cipher->ctx, NULL, NULL, NULL, NULL)
 				&& EVP_EncryptUpdate(cipher->ctx, (unsigned char *)outdata, &len, indata, inlen)
-				&& EVP_EncryptFinal(cipher->ctx, (unsigned char *)outdata + len, &pad)) {
+				&& EVP_EncryptFinal_ex(cipher->ctx, (unsigned char *)outdata + len, &pad)) {
 			if(outlen) *outlen = len + pad;
 			return true;
 		}
@@ -158,7 +158,7 @@ bool cipher_decrypt(cipher_t *cipher, const void *indata, size_t inlen, void *ou
 		int len, pad;
 		if(EVP_DecryptInit_ex(cipher->ctx, NULL, NULL, NULL, NULL)
 				&& EVP_DecryptUpdate(cipher->ctx, (unsigned char *)outdata, &len, indata, inlen)
-				&& EVP_DecryptFinal(cipher->ctx, (unsigned char *)outdata + len, &pad)) {
+				&& EVP_DecryptFinal_ex(cipher->ctx, (unsigned char *)outdata + len, &pad)) {
 			if(outlen) *outlen = len + pad;
 			return true;
 		}
diff --git a/src/protocol_key.c b/src/protocol_key.c
index 336fbd95..64beb2b9 100644
--- a/src/protocol_key.c
+++ b/src/protocol_key.c
@@ -370,7 +370,7 @@ bool ans_key_h(connection_t *c, const char *request) {
 	char key[MAX_STRING_SIZE];
 	char address[MAX_STRING_SIZE] = "";
 	char port[MAX_STRING_SIZE] = "";
-	int cipher, digest, maclength, compression, keylen;
+	int cipher, digest, maclength, compression;
 	node_t *from, *to;
 
 	if(sscanf(request, "%*d "MAX_STRING" "MAX_STRING" "MAX_STRING" %d %d %d %d "MAX_STRING" "MAX_STRING,
@@ -508,7 +508,7 @@ bool ans_key_h(connection_t *c, const char *request) {
 
 	/* Process key */
 
-	keylen = hex2bin(key, key, sizeof key);
+	int keylen = hex2bin(key, key, sizeof key);
 
 	if(keylen != (from->outcipher ? cipher_keylength(from->outcipher) : 1)) {
 		logger(DEBUG_ALWAYS, LOG_ERR, "Node %s (%s) uses wrong keylength!", from->name, from->hostname);
diff --git a/src/script.c b/src/script.c
index 1ce59ea0..d65551a4 100644
--- a/src/script.c
+++ b/src/script.c
@@ -64,7 +64,7 @@ static void putenv(const char *p) {}
 static void unputenv(const char *p) {}
 #endif
 
-static const int min_env_size;
+static const int min_env_size = 10;
 
 int environment_add(environment_t *env, const char *format, ...) {
 	if(env->n >= env->size) {
@@ -95,7 +95,7 @@ void environment_update(environment_t *env, int pos, const char *format, ...) {
 void environment_init(environment_t *env) {
 	env->n = 0;
 	env->size = min_env_size;
-	env->entries = 0; //xzalloc(env->size * sizeof *env->entries);
+	env->entries = xzalloc(env->size * sizeof *env->entries);
 
 	if(netname)
 		environment_add(env, "NETNAME=%s", netname);
diff --git a/src/tincctl.c b/src/tincctl.c
index 47d4322b..cb5d0aac 100644
--- a/src/tincctl.c
+++ b/src/tincctl.c
@@ -512,7 +512,7 @@ bool recvline(int fd, char *line, size_t len) {
 	char *newline = NULL;
 
 	if(!fd)
-		abort();
+		return false;
 
 	while(!(newline = memchr(buffer, '\n', blen))) {
 		int result = recv(fd, buffer + blen, sizeof buffer - blen, 0);
@@ -802,7 +802,7 @@ bool connect_tincd(bool verbose) {
 	char data[4096];
 	int version;
 
-	if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %s %d", &code, data, &version) != 3 || code != 0) {
+	if(!recvline(fd, line, sizeof line) || sscanf(line, "%d %4095s %d", &code, data, &version) != 3 || code != 0) {
 		if(verbose)
 			fprintf(stderr, "Cannot read greeting from control socket: %s\n", sockstrerror(sockerrno));
 		close(fd);
@@ -951,11 +951,11 @@ static int cmd_stop(int argc, char *argv[]) {
 	if(!connect_tincd(true)) {
 		if(pid) {
 			if(kill(pid, SIGTERM)) {
-				fprintf(stderr, "Could not send TERM signal to process with PID %u: %s\n", pid, strerror(errno));
+				fprintf(stderr, "Could not send TERM signal to process with PID %d: %s\n", pid, strerror(errno));
 				return 1;
 			}
 
-			fprintf(stderr, "Sent TERM signal to process with PID %u.\n", pid);
+			fprintf(stderr, "Sent TERM signal to process with PID %d.\n", pid);
 			waitpid(pid, NULL, 0);
 			return 0;
 		}
@@ -1031,7 +1031,6 @@ static int dump_invitations(void) {
 		FILE *f = fopen(fname, "r");
 		if(!f) {
 			fprintf(stderr, "Cannot open %s: %s\n", fname, strerror(errno));
-			fclose(f);
 			continue;
 		}
 
@@ -1120,7 +1119,7 @@ static int cmd_dump(int argc, char *argv[]) {
 
 	while(recvline(fd, line, sizeof line)) {
 		char node1[4096], node2[4096];
-		int n = sscanf(line, "%d %d %s %s", &code, &req, node1, node2);
+		int n = sscanf(line, "%d %d %4095s %4095s", &code, &req, node1, node2);
 		if(n == 2) {
 			if(do_graph && req == REQ_DUMP_NODES)
 				continue;
@@ -1152,7 +1151,7 @@ static int cmd_dump(int argc, char *argv[]) {
 
 		switch(req) {
 			case REQ_DUMP_NODES: {
-				int n = sscanf(line, "%*d %*d %s %s %s port %s %d %d %d %d %x %x %s %s %d %hd %hd %hd %ld", node, id, host, port, &cipher, &digest, &maclength, &compression, &options, &status_int, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
+				int n = sscanf(line, "%*d %*d %4095s %4095s %4095s port %4095s %d %d %d %d %x %x %4095s %4095s %d %hd %hd %hd %ld", node, id, host, port, &cipher, &digest, &maclength, &compression, &options, &status_int, nexthop, via, &distance, &pmtu, &minmtu, &maxmtu, &last_state_change);
 				if(n != 17) {
 					fprintf(stderr, "Unable to parse node dump from tincd: %s\n", line);
 					return 1;
@@ -1182,7 +1181,7 @@ static int cmd_dump(int argc, char *argv[]) {
 			} break;
 
 			case REQ_DUMP_EDGES: {
-				int n = sscanf(line, "%*d %*d %s %s %s port %s %s port %s %x %d %d", from, to, host, port, local_host, local_port, &options, &weight, &avg_rtt);
+				int n = sscanf(line, "%*d %*d %4095s %4095s %4095s port %4095s %4095s port %4095s %x %d %d", from, to, host, port, local_host, local_port, &options, &weight, &avg_rtt);
 				if(n != 9) {
 					fprintf(stderr, "Unable to parse edge dump from tincd.\n");
 					return 1;
@@ -1200,7 +1199,7 @@ static int cmd_dump(int argc, char *argv[]) {
 			} break;
 
 			case REQ_DUMP_SUBNETS: {
-				int n = sscanf(line, "%*d %*d %s %s", subnet, node);
+				int n = sscanf(line, "%*d %*d %4095s %4095s", subnet, node);
 				if(n != 2) {
 					fprintf(stderr, "Unable to parse subnet dump from tincd.\n");
 					return 1;
@@ -1209,7 +1208,7 @@ static int cmd_dump(int argc, char *argv[]) {
 			} break;
 
 			case REQ_DUMP_CONNECTIONS: {
-				int n = sscanf(line, "%*d %*d %s %s port %s %x %d %x", node, host, port, &options, &socket, &status_int);
+				int n = sscanf(line, "%*d %*d %4095s %4095s port %4095s %x %d %x", node, host, port, &options, &socket, &status_int);
 				if(n != 6) {
 					fprintf(stderr, "Unable to parse connection dump from tincd.\n");
 					return 1;
@@ -2250,7 +2249,7 @@ static int cmd_import(int argc, char *argv[]) {
 	bool firstline = true;
 
 	while(fgets(buf, sizeof buf, in)) {
-		if(sscanf(buf, "Name = %s", name) == 1) {
+		if(sscanf(buf, "Name = %4095s", name) == 1) {
 			firstline = false;
 
 			if(!check_id(name)) {
@@ -2743,7 +2742,7 @@ static char *complete_info(const char *text, int state) {
 
 	while(recvline(fd, line, sizeof line)) {
 		char item[4096];
-		int n = sscanf(line, "%d %d %s", &code, &req, item);
+		int n = sscanf(line, "%d %d %4095s", &code, &req, item);
 		if(n == 2) {
 			i++;
 			if(i >= 2)
@@ -2847,8 +2846,6 @@ static int cmd_shell(int argc, char *argv[]) {
 
 		while(p && *p) {
 			if(nargc >= maxargs) {
-				fprintf(stderr, "next %p '%s', p %p '%s'\n", next, next, p, p);
-				abort();
 				maxargs *= 2;
 				nargv = xrealloc(nargv, maxargs * sizeof *nargv);
 			}
diff --git a/src/top.c b/src/top.c
index d91adb56..1eae11c5 100644
--- a/src/top.c
+++ b/src/top.c
@@ -92,7 +92,7 @@ static bool update(int fd) {
 		ns->known = false;
 
 	while(recvline(fd, line, sizeof line)) {
-		int n = sscanf(line, "%d %d %s %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64" %d", &code, &req, name, &in_packets, &in_bytes, &out_packets, &out_bytes, (int *)&myself);
+		int n = sscanf(line, "%d %d %4095s %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64, &code, &req, name, &in_packets, &in_bytes, &out_packets, &out_bytes);
 
 		if(n == 2)
 			return true;
@@ -161,40 +161,47 @@ static int cmpu64(uint64_t a, uint64_t b) {
 static int sortfunc(const void *a, const void *b) {
 	const nodestats_t *na = *(const nodestats_t **)a;
 	const nodestats_t *nb = *(const nodestats_t **)b;
+	int result;
+
 	switch(sortmode) {
 		case 1:
 			if(cumulative)
-				return -cmpu64(na->in_packets, nb->in_packets) ?: na->i - nb->i;
+				result = -cmpu64(na->in_packets, nb->in_packets);
 			else
-				return -cmpfloat(na->in_packets_rate, nb->in_packets_rate) ?: na->i - nb->i;
+				result = -cmpfloat(na->in_packets_rate, nb->in_packets_rate);
 		case 2:
 			if(cumulative)
-				return -cmpu64(na->in_bytes, nb->in_bytes) ?: na->i - nb->i;
+				result = -cmpu64(na->in_bytes, nb->in_bytes);
 			else
-				return -cmpfloat(na->in_bytes_rate, nb->in_bytes_rate) ?: na->i - nb->i;
+				result = -cmpfloat(na->in_bytes_rate, nb->in_bytes_rate);
 		case 3:
 			if(cumulative)
-				return -cmpu64(na->out_packets, nb->out_packets) ?: na->i - nb->i;
+				result = -cmpu64(na->out_packets, nb->out_packets);
 			else
-				return -cmpfloat(na->out_packets_rate, nb->out_packets_rate) ?: na->i - nb->i;
+				result = -cmpfloat(na->out_packets_rate, nb->out_packets_rate);
 		case 4:
 			if(cumulative)
-				return -cmpu64(na->out_bytes, nb->out_bytes) ?: na->i - nb->i;
+				result = -cmpu64(na->out_bytes, nb->out_bytes);
 			else
-				return -cmpfloat(na->out_bytes_rate, nb->out_bytes_rate) ?: na->i - nb->i;
+				result = -cmpfloat(na->out_bytes_rate, nb->out_bytes_rate);
 		case 5:
 			if(cumulative)
-				return -cmpu64(na->in_packets + na->out_packets, nb->in_packets + nb->out_packets) ?: na->i - nb->i;
+				result = -cmpu64(na->in_packets + na->out_packets, nb->in_packets + nb->out_packets);
 			else
-				return -cmpfloat(na->in_packets_rate + na->out_packets_rate, nb->in_packets_rate + nb->out_packets_rate) ?: na->i - nb->i;
+				result = -cmpfloat(na->in_packets_rate + na->out_packets_rate, nb->in_packets_rate + nb->out_packets_rate);
 		case 6:
 			if(cumulative)
-				return -cmpu64(na->in_bytes + na->out_bytes, nb->in_bytes + nb->out_bytes) ?: na->i - nb->i;
+				result = -cmpu64(na->in_bytes + na->out_bytes, nb->in_bytes + nb->out_bytes);
 			else
-				return -cmpfloat(na->in_bytes_rate + na->out_bytes_rate, nb->in_bytes_rate + nb->out_bytes_rate) ?: na->i - nb->i;
+				result = -cmpfloat(na->in_bytes_rate + na->out_bytes_rate, nb->in_bytes_rate + nb->out_bytes_rate);
 		default:
-			return strcmp(na->name, nb->name) ?: na->i - nb->i;
+			result = strcmp(na->name, nb->name);
 	}
+
+	if(result)
+		return result;
+	else
+		return na->i - nb->i;
 }
 
 static void redraw(void) {
diff --git a/test/executables.test b/test/executables.test
index 35dd2bc8..801de58c 100755
--- a/test/executables.test
+++ b/test/executables.test
@@ -5,4 +5,6 @@
 # Just test whether the executables work
 $tincd --help
 $tinc --help
-$sptps_test --help
+if [ -e $sptps_test ]; then
+	$sptps_test --help
+fi
diff --git a/test/pong.c b/test/pong.c
index 65a9075c..a4f2be73 100644
--- a/test/pong.c
+++ b/test/pong.c
@@ -1,6 +1,6 @@
 /*
     pong.c -- ICMP echo reply generator
-    Copyright (C) 2013 Guus Sliepen <guus@tinc-vpn.org>
+    Copyright (C) 2013-2017 Guus Sliepen <guus@tinc-vpn.org>
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -19,6 +19,8 @@
 
 #include "../src/system.h"
 
+#include "../src/ethernet.h"
+
 uint8_t mymac[6] = {6, 5, 5, 6, 5, 5};
 
 static ssize_t do_arp(uint8_t *buf, ssize_t len, struct sockaddr_in *in) {
@@ -152,7 +154,7 @@ int main(int argc, char *argv[]) {
 #endif
 
 		default:
-			fprintf(stderr, "Multicast for address family %hx unsupported\n", ai->ai_family);
+			fprintf(stderr, "Multicast for address family %x unsupported\n", ai->ai_family);
 			return 1;
 	}
 
diff --git a/test/scripts.test b/test/scripts.test
index 6fe616f8..3b3f2749 100755
--- a/test/scripts.test
+++ b/test/scripts.test
@@ -71,6 +71,8 @@ echo bar-started >>$OUT
 # Stop server node
 
 $tinc $c1 stop
+sleep 1
+$tinc $c2 stop
 
 # Check if the script output is what is expected
 
diff --git a/test/sptps-basic.test b/test/sptps-basic.test
index 644a31e0..28c0c404 100755
--- a/test/sptps-basic.test
+++ b/test/sptps-basic.test
@@ -2,6 +2,10 @@
 
 . ./testlib.sh
 
+# Skip this test if we did not compile sptps_test
+
+test -e $sptps_test || exit 77
+
 # Generate keys
 
 mkdir -p $d1
diff --git a/test/testlib.sh b/test/testlib.sh
index 31033352..75b60a79 100644
--- a/test/testlib.sh
+++ b/test/testlib.sh
@@ -9,18 +9,10 @@ sptps_keypair=../src/sptps_keypair
 
 # Test directories
 
-case "$_" in
-	/*)
-		d1=$_.1
-		d2=$_.2
-		d3=$_.3
-	;;
-	*)
-		d1=$PWD/$_.1
-		d2=$PWD/$_.2
-		d3=$PWD/$_.3
-	;;
-esac
+scriptname=`basename $0`
+d1=$PWD/$scriptname.1
+d2=$PWD/$scriptname.2
+d3=$PWD/$scriptname.3
 
 # Default arguments for both tinc and tincd