sparse fixup: warning: Using plain integer as NULL pointer

src/buffer.c

@@ -101,7 +101,7 @@ char *buffer_read(buffer_t *buffer, int size) {
 
 void buffer_clear(buffer_t *buffer) {
 	free(buffer->data);
-	buffer->data = 0;
+	buffer->data = NULL;
 	buffer->maxlen = 0;
 	buffer->len = 0;
 	buffer->offset = 0;

src/conf.c

@@ -188,7 +188,7 @@ bool get_config_address(const config_t *cfg, struct addrinfo **result) {
 }
 
 bool get_config_subnet(const config_t *cfg, subnet_t ** result) {
-	subnet_t subnet = {0};
+	subnet_t subnet = {NULL};
 
 	if(!cfg)
 		return false;

src/net_setup.c

@@ -608,7 +608,7 @@ void close_network_connections(void) {
 	for(node = connection_tree->head; node; node = next) {
 		next = node->next;
 		c = node->data;
-		c->outgoing = false;
+		c->outgoing = NULL;
 		terminate_connection(c, false);
 	}
 

src/node.c

@@ -126,7 +126,7 @@ void node_del(node_t *n) {
 }
 
 node_t *lookup_node(char *name) {
-	node_t n = {0};
+	node_t n = {NULL};
 
 	n.name = name;
 
@@ -134,7 +134,7 @@ node_t *lookup_node(char *name) {
 }
 
 node_t *lookup_node_udp(const sockaddr_t *sa) {
-	node_t n = {0};
+	node_t n = {NULL};
 
 	n.address = *sa;
 	n.name = NULL;
@@ -160,7 +160,7 @@ void update_node_udp(node_t *n, const sockaddr_t *sa) {
 		logger(LOG_DEBUG, "UDP address of %s set to %s", n->name, n->hostname);
 	} else {
 		memset(&n->address, 0, sizeof n->address);
-		n->hostname = 0;
+		n->hostname = NULL;
 		ifdebug(PROTOCOL) logger(LOG_DEBUG, "UDP address of %s cleared", n->name);
 	}
 }

src/protocol.c

@@ -178,7 +178,7 @@ static void free_past_request(past_request_t *r) {
 static struct event past_request_event;
 
 bool seen_request(char *request) {
-	past_request_t *new, p = {0};
+	past_request_t *new, p = {NULL};
 
 	p.request = request;
 

src/protocol_subnet.c

@@ -45,7 +45,7 @@ bool add_subnet_h(connection_t *c, char *request) {
 	char subnetstr[MAX_STRING_SIZE];
 	char name[MAX_STRING_SIZE];
 	node_t *owner;
-	subnet_t s = {0}, *new, *old;
+	subnet_t s = {NULL}, *new, *old;
 
 	if(sscanf(request, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) {
 		logger(LOG_ERR, "Got bad %s from %s (%s)", "ADD_SUBNET", c->name,
@@ -155,7 +155,7 @@ bool del_subnet_h(connection_t *c, char *request) {
 	char subnetstr[MAX_STRING_SIZE];
 	char name[MAX_STRING_SIZE];
 	node_t *owner;
-	subnet_t s = {0}, *find;
+	subnet_t s = {NULL}, *find;
 
 	if(sscanf(request, "%*d %*x " MAX_STRING " " MAX_STRING, name, subnetstr) != 2) {
 		logger(LOG_ERR, "Got bad %s from %s (%s)", "DEL_SUBNET", c->name,

src/splay_tree.c

@@ -25,7 +25,7 @@
 /* Splay operation */
 
 static splay_node_t *splay_top_down(splay_tree_t *tree, const void *data, int *result) {
-	splay_node_t left = {0}, right = {0};
+	splay_node_t left = {NULL}, right = {NULL};
 	splay_node_t *leftbottom = &left, *rightbottom = &right, *child, *grandchild;
 	splay_node_t *root = tree->root;
 	int c;

src/subnet.c

@@ -452,7 +452,7 @@ subnet_t *lookup_subnet_ipv6(const ipv6_t *address) {
 void subnet_update(node_t *owner, subnet_t *subnet, bool up) {
 	splay_node_t *node;
 	int i;
-	char *envp[9] = {0};
+	char *envp[9] = {NULL};
 	char netstr[MAXNETSTR];
 	char *name, *address, *port;
 	char empty[] = "";

src/tincd.c

@@ -445,7 +445,7 @@ int main2(int argc, char **argv) {
 
 	/* Change process priority */
 
-        char *priority = 0;
+        char *priority = NULL;
 
         if(get_config_string(lookup_config(config_tree, "ProcessPriority"), &priority)) {
                 if(!strcasecmp(priority, "Normal")) {

src/xmalloc.c

@@ -56,7 +56,7 @@ int xalloc_exit_failure = EXIT_FAILURE;
 char *const xalloc_msg_memory_exhausted = "Memory exhausted";
 
 /* FIXME: describe */
-void (*xalloc_fail_func) (int) = 0;
+void (*xalloc_fail_func) (int) = NULL;
 
 static void
 xalloc_fail (int size)
@@ -75,7 +75,7 @@ xmalloc (size_t n)
   void *p;
 
   p = malloc (n);
-  if (p == 0)
+  if (p == NULL)
     xalloc_fail ((int)n);
   return p;
 }
@@ -88,7 +88,7 @@ xmalloc_and_zero (size_t n)
   void *p;
 
   p = malloc (n);
-  if (p == 0)
+  if (p == NULL)
     xalloc_fail ((int)n);
   memset (p, '\0', n);
   return p;
@@ -102,7 +102,7 @@ void *
 xrealloc (void *p, size_t n)
 {
   p = realloc (p, n);
-  if (p == 0)
+  if (p == NULL)
     xalloc_fail (n);
   return p;
 }