diff --git a/src/core/channel-rec.h b/src/core/channel-rec.h
index e0d5b858..2f7c7dec 100644
--- a/src/core/channel-rec.h
+++ b/src/core/channel-rec.h
@@ -7,20 +7,20 @@ char *topic_by;
 time_t topic_time;
 GHashTable *nicks; /* list of nicks */
 
-int no_modes:1; /* channel doesn't support modes */
+unsigned int no_modes:1; /* channel doesn't support modes */
 char *mode;
 int limit; /* user limit */
 char *key; /* password key */
 
-int chanop:1; /* You're a channel operator */
-int names_got:1; /* Received /NAMES list */
-int wholist:1; /* WHO list got */
-int synced:1; /* Channel synced - all queries done */
+unsigned int chanop:1; /* You're a channel operator */
+unsigned int names_got:1; /* Received /NAMES list */
+unsigned int wholist:1; /* WHO list got */
+unsigned int synced:1; /* Channel synced - all queries done */
 
-int joined:1; /* Have we even received JOIN event for this channel? */
-int left:1; /* You just left the channel */
-int kicked:1; /* You just got kicked */
-int destroying:1;
+unsigned int joined:1; /* Have we even received JOIN event for this channel? */
+unsigned int left:1; /* You just left the channel */
+unsigned int kicked:1; /* You just got kicked */
+unsigned int destroying:1;
 
 GSList *lastmsgs; /* List of nicks who last send message */
 GSList *lastownmsgs; /* List of nicks who last send message to you */
diff --git a/src/core/channels-setup.h b/src/core/channels-setup.h
index e30893fe..acb24242 100644
--- a/src/core/channels-setup.h
+++ b/src/core/channels-setup.h
@@ -11,7 +11,7 @@ typedef struct {
 	char *botmasks;
 	char *autosendcmd;
 
-	int autojoin:1;
+	unsigned int autojoin:1;
 	GHashTable *module_data;
 } CHANNEL_SETUP_REC;
 
diff --git a/src/core/ignore.c b/src/core/ignore.c
index 16005111..420e91c7 100644
--- a/src/core/ignore.c
+++ b/src/core/ignore.c
@@ -100,7 +100,7 @@ int ignore_check(SERVER_REC *server, const char *nick, const char *host,
 				mask_match_address(server, rec->mask, nick, host);
 			if (!ok) {
                                 /* nick didn't match, but maybe this is a reply to nick? */
-				if (!rec->replies || channel == NULL || text == NULL ||
+				if (!rec->replies || chanrec == NULL || text == NULL ||
 				    !ignore_check_replies(rec, chanrec, text))
 					continue;
 			}
diff --git a/src/core/ignore.h b/src/core/ignore.h
index 6c336c00..db88d9a4 100644
--- a/src/core/ignore.h
+++ b/src/core/ignore.h
@@ -18,11 +18,11 @@ typedef struct {
 	int time; /* time in sec for temp ignores */
 	int time_tag;
 
-	int regexp:1;
-	int fullword:1;
-	int replies:1; /* ignore replies to nick in channel */
+	unsigned int regexp:1;
+	unsigned int fullword:1;
+	unsigned int replies:1; /* ignore replies to nick in channel */
 #ifdef HAVE_REGEX_H
-	int regexp_compiled:1; /* should always be TRUE, unless regexp is invalid */
+	unsigned int regexp_compiled:1; /* should always be TRUE, unless regexp is invalid */
 	regex_t preg;
 #endif
 } IGNORE_REC;
diff --git a/src/core/log.h b/src/core/log.h
index e3a801c3..8d151c26 100644
--- a/src/core/log.h
+++ b/src/core/log.h
@@ -25,9 +25,9 @@ typedef struct {
 
 	time_t last; /* when last message was written */
 
-	int autoopen:1; /* automatically start logging at startup */
-	int failed:1; /* opening log failed last time */
-	int temp:1; /* don't save this to config file */
+	unsigned int autoopen:1; /* automatically start logging at startup */
+	unsigned int failed:1; /* opening log failed last time */
+	unsigned int temp:1; /* don't save this to config file */
 } LOG_REC;
 
 extern GSList *logs;
diff --git a/src/core/misc.c b/src/core/misc.c
index 1212c602..80b60871 100644
--- a/src/core/misc.c
+++ b/src/core/misc.c
@@ -37,7 +37,7 @@ static int irssi_io_invoke(GIOChannel *source, GIOCondition condition,
 			   void *data)
 {
 	IRSSI_INPUT_REC *rec = data;
-	GInputCondition icond = 0;
+	GInputCondition icond = (GInputCondition)0;
 
 	if (condition & (G_IO_ERR | G_IO_HUP | G_IO_NVAL)) {
 		/* error, we have to call the function.. */
@@ -73,7 +73,7 @@ int g_input_add_full(int source, int priority, GInputCondition condition,
 	rec->function = function;
 	rec->data = data;
 
-	cond = G_IO_ERR|G_IO_HUP|G_IO_NVAL;
+	cond = (GIOCondition) (G_IO_ERR|G_IO_HUP|G_IO_NVAL);
 	if (condition & G_INPUT_READ)
 		cond |= G_IO_IN|G_IO_PRI;
 	if (condition & G_INPUT_WRITE)
diff --git a/src/core/modules.c b/src/core/modules.c
index bcb537b1..85bbf587 100644
--- a/src/core/modules.c
+++ b/src/core/modules.c
@@ -251,7 +251,7 @@ GModule *module_open(const char *name)
 		g_free(str);
 
 		if (stat(path, &statbuf) == 0) {
-			module = g_module_open(path, 0);
+			module = g_module_open(path, (GModuleFlags) 0);
 			g_free(path);
 			return module;
 		}
@@ -260,7 +260,7 @@ GModule *module_open(const char *name)
 		path = g_module_build_path(MODULEDIR, name);
 	}
 
-	module = g_module_open(path, 0);
+	module = g_module_open(path, (GModuleFlags) 0);
 	g_free(path);
 	return module;
 }
diff --git a/src/core/net-nonblock.c b/src/core/net-nonblock.c
index c6342e08..b21dca08 100644
--- a/src/core/net-nonblock.c
+++ b/src/core/net-nonblock.c
@@ -190,7 +190,8 @@ static void simple_readpipe(SIMPLE_THREAD_REC *rec, int pipe)
 		return;
 	}
 
-	rec->tag = g_input_add(handle, G_INPUT_READ | G_INPUT_WRITE,
+	rec->tag = g_input_add(handle,
+			       (GInputCondition) (G_INPUT_READ|G_INPUT_WRITE),
 			       (GInputFunction) simple_init, rec);
 }
 
diff --git a/src/core/nicklist.h b/src/core/nicklist.h
index c9015ab7..3f7a272b 100644
--- a/src/core/nicklist.h
+++ b/src/core/nicklist.h
@@ -13,14 +13,14 @@ typedef struct {
 	int hops;
 
 	/* status in server */
-	int gone:1;
-	int serverop:1;
+	unsigned int gone:1;
+	unsigned int serverop:1;
 
 	/* status in channel */
-	int send_massjoin:1; /* Waiting to be sent in massjoin signal */
-	int op:1;
-	int halfop:1;
-	int voice:1;
+	unsigned int send_massjoin:1; /* Waiting to be sent in massjoin signal */
+	unsigned int op:1;
+	unsigned int halfop:1;
+	unsigned int voice:1;
 } NICK_REC;
 
 /* Add new nick to list */
diff --git a/src/core/query-rec.h b/src/core/query-rec.h
index 8b587f5e..12ef491c 100644
--- a/src/core/query-rec.h
+++ b/src/core/query-rec.h
@@ -4,6 +4,6 @@
 
 char *address;
 char *server_tag;
-int unwanted:1; /* TRUE if the other side closed or
-                   some error occured (DCC chats!) */
-int destroying:1;
+unsigned int unwanted:1; /* TRUE if the other side closed or
+			    some error occured (DCC chats!) */
+unsigned int destroying:1;
diff --git a/src/core/server-connect-rec.h b/src/core/server-connect-rec.h
index eea6739b..0155dd2a 100644
--- a/src/core/server-connect-rec.h
+++ b/src/core/server-connect-rec.h
@@ -20,7 +20,7 @@ char *username;
 char *realname;
 
 /* when reconnecting, the old server status */
-int reconnection:1; /* we're trying to reconnect */
+unsigned int reconnection:1; /* we're trying to reconnect */
 char *channels;
 char *away_reason;
 char *usermode;
diff --git a/src/core/server-rec.h b/src/core/server-rec.h
index c2c24ce3..58742e70 100644
--- a/src/core/server-rec.h
+++ b/src/core/server-rec.h
@@ -10,8 +10,8 @@ time_t real_connect_time; /* time when server replied that we really are connect
 char *tag; /* tag name for addressing server */
 char *nick; /* current nick */
 
-int connected:1; /* connected to server */
-int connection_lost:1; /* Connection lost unintentionally */
+unsigned int connected:1; /* connected to server */
+unsigned int connection_lost:1; /* Connection lost unintentionally */
 
 void *handle; /* NET_SENDBUF_REC socket */
 int readtag; /* input tag */
@@ -33,9 +33,9 @@ GHashTable *module_data;
 char *version; /* server version */
 char *away_reason;
 char *last_invite; /* channel where you were last invited */
-int server_operator:1;
-int usermode_away:1;
-int banned:1; /* not allowed to connect to this server */
+unsigned int server_operator:1;
+unsigned int usermode_away:1;
+unsigned int banned:1; /* not allowed to connect to this server */
 
 time_t lag_sent; /* 0 or time when last lag query was sent to server */
 time_t lag_last_check; /* last time we checked lag */
diff --git a/src/core/server-setup-rec.h b/src/core/server-setup-rec.h
index 5e6edb7f..56df6106 100644
--- a/src/core/server-setup-rec.h
+++ b/src/core/server-setup-rec.h
@@ -12,8 +12,8 @@ IPADDR *own_ip; /* resolved own_address if not NULL */
 
 time_t last_connect; /* to avoid reconnecting too fast.. */
 
-int autoconnect:1;
-int last_failed:1; /* if last connection attempt failed */
-int banned:1; /* if we're banned from this server */
+unsigned int autoconnect:1;
+unsigned int last_failed:1; /* if last connection attempt failed */
+unsigned int banned:1; /* if we're banned from this server */
 
 GHashTable *module_data;
diff --git a/src/core/servers.c b/src/core/servers.c
index 9ec53902..1cdee751 100644
--- a/src/core/servers.c
+++ b/src/core/servers.c
@@ -200,7 +200,8 @@ static void server_connect_callback_readpipe(SERVER_REC *server)
 
 	server->handle = net_sendbuffer_create(handle, 0);
 	server->connect_tag =
-		g_input_add(handle, G_INPUT_WRITE | G_INPUT_READ,
+		g_input_add(handle,
+			    (GInputCondition) (G_INPUT_WRITE|G_INPUT_READ),
 			    (GInputFunction) server_connect_callback_init,
 			    server);
 	signal_emit("server connecting", 2, server, &iprec.ip);
diff --git a/src/core/settings.c b/src/core/settings.c
index 3bfddec5..65c7b1d9 100644
--- a/src/core/settings.c
+++ b/src/core/settings.c
@@ -76,12 +76,12 @@ const char *settings_get_str(const char *key)
 	return iconfig_get_str("settings", key, settings_get_default_str(key));
 }
 
-const int settings_get_int(const char *key)
+int settings_get_int(const char *key)
 {
 	return iconfig_get_int("settings", key, settings_get_default_int(key));
 }
 
-const int settings_get_bool(const char *key)
+int settings_get_bool(const char *key)
 {
 	return iconfig_get_bool("settings", key,
 				settings_get_default_int(key));
diff --git a/src/core/settings.h b/src/core/settings.h
index 8409f607..b399846d 100644
--- a/src/core/settings.h
+++ b/src/core/settings.h
@@ -38,8 +38,8 @@ extern CONFIG_REC *mainconfig;
 
 /* Functions for handling the "settings" node of Irssi configuration */
 const char *settings_get_str(const char *key);
-const int settings_get_int(const char *key);
-const int settings_get_bool(const char *key);
+int settings_get_int(const char *key);
+int settings_get_bool(const char *key);
 
 /* Functions to add/remove settings */
 void settings_add_str(const char *section, const char *key, const char *def);
diff --git a/src/fe-common/core/fe-core-commands.c b/src/fe-common/core/fe-core-commands.c
index c942c3dd..6b3bfc90 100644
--- a/src/fe-common/core/fe-core-commands.c
+++ b/src/fe-common/core/fe-core-commands.c
@@ -69,7 +69,7 @@ static int commands_compare(COMMAND_REC *rec, COMMAND_REC *rec2)
 
 static void help_category(GSList *cmdlist, gint items, gint max)
 {
-    COMMAND_REC *rec, *last;
+    COMMAND_REC *rec;
     GString *str;
     GSList *tmp;
     gint lines, cols, line, col, skip;
@@ -80,8 +80,8 @@ static void help_category(GSList *cmdlist, gint items, gint max)
     cols = max > 65 ? 1 : (65 / max);
     lines = items <= cols ? 1 : items / cols+1;
 
-    last = NULL; cmdbuf = g_malloc(max+1); cmdbuf[max] = '\0';
-    for (line = 0, col = 0, skip = 1, tmp = cmdlist; line < lines; last = rec, tmp = tmp->next)
+    cmdbuf = g_malloc(max+1); cmdbuf[max] = '\0';
+    for (line = 0, col = 0, skip = 1, tmp = cmdlist; line < lines; tmp = tmp->next)
     {
 	rec = tmp->data;
 
diff --git a/src/fe-common/irc/fe-events-numeric.c b/src/fe-common/irc/fe-events-numeric.c
index 7fdbdbbe..4d57d8cb 100644
--- a/src/fe-common/irc/fe-events-numeric.c
+++ b/src/fe-common/irc/fe-events-numeric.c
@@ -75,7 +75,7 @@ static void event_names_list(const char *data, IRC_SERVER_REC *server)
 
 static void display_sorted_nicks(CHANNEL_REC *channel, GSList *nicklist, gint items, gint max)
 {
-    NICK_REC *rec, *last;
+    NICK_REC *rec;
     GString *str;
     GSList *tmp;
     gint lines, cols, line, col, skip;
@@ -88,8 +88,8 @@ static void display_sorted_nicks(CHANNEL_REC *channel, GSList *nicklist, gint it
     lines = items <= cols ? 1 : items/cols + 1;
     if (lines > items) lines = items;
 
-    last = NULL; linebuf = g_malloc(max+1); linebuf[max] = '\0';
-    for (line = 0, col = 0, skip = 1, tmp = nicklist; line < lines; last = rec, tmp = tmp->next)
+    linebuf = g_malloc(max+1); linebuf[max] = '\0';
+    for (line = 0, col = 0, skip = 1, tmp = nicklist; line < lines; tmp = tmp->next)
     {
 	rec = tmp->data;
 
diff --git a/src/fe-text/gui-windows.h b/src/fe-text/gui-windows.h
index ec2d8760..23085b92 100644
--- a/src/fe-text/gui-windows.h
+++ b/src/fe-text/gui-windows.h
@@ -31,7 +31,7 @@ typedef struct {
 	char *start;
 	int indent;
 	int color;
-	int continues:1; /* first word in line belong to the end of the last word in previous line */
+	unsigned int continues:1; /* first word in line belong to the end of the last word in previous line */
 } LINE_CACHE_SUB_REC;
 
 typedef struct {
@@ -79,8 +79,8 @@ typedef struct {
 	int bottom_subline;
 	int empty_linecount; /* how many empty lines are in screen.
 	                        a screenful when started or used /CLEAR */
-	int bottom:1; /* window is at the bottom of the text buffer */
-	int eol_marked:1; /* last line marked for eol */
+	unsigned int bottom:1; /* window is at the bottom of the text buffer */
+	unsigned int eol_marked:1; /* last line marked for eol */
 
 	/* For /LAST -new and -away */
 	GList *lastlog_last_check;
diff --git a/src/irc/core/ctcp.c b/src/irc/core/ctcp.c
index a1d1f2df..3072e2f4 100644
--- a/src/irc/core/ctcp.c
+++ b/src/irc/core/ctcp.c
@@ -33,7 +33,7 @@ static void ctcp_queue_clean(IRC_SERVER_REC *server)
 {
 	GSList *tmp, *next;
 
-	for (tmp = server->ctcpqueue; tmp != NULL; tmp = tmp->next) {
+	for (tmp = server->ctcpqueue; tmp != NULL; tmp = next) {
 		next = tmp->next;
 		if (!server_idle_find(server, GPOINTER_TO_INT(tmp->data))) {
 			server->ctcpqueue =
diff --git a/src/irc/core/irc-channels.c b/src/irc/core/irc-channels.c
index 3bc57722..063ca501 100644
--- a/src/irc/core/irc-channels.c
+++ b/src/irc/core/irc-channels.c
@@ -192,8 +192,10 @@ static void sig_server_looking(SERVER_REC *server)
 	if (!IS_IRC_SERVER(server))
 		return;
 
-	server->channel_find_func = (void *) irc_channel_find_server;
-	server->channels_join = (void *) irc_channels_join;
+	server->channel_find_func =
+		(void *(*)(void *, const char *)) irc_channel_find_server;
+	server->channels_join =
+		(void (*)(void *, const char *, int)) irc_channels_join;
 }
 
 void irc_channels_init(void)
diff --git a/src/irc/core/irc-nicklist.c b/src/irc/core/irc-nicklist.c
index a107d15a..9b8de036 100644
--- a/src/irc/core/irc-nicklist.c
+++ b/src/irc/core/irc-nicklist.c
@@ -343,8 +343,10 @@ static const char *get_nick_flags(void)
 
 static void sig_connected(IRC_SERVER_REC *server)
 {
-	if (IS_IRC_SERVER(server))
-		server->get_nick_flags = (void *) get_nick_flags;
+	if (IS_IRC_SERVER(server)) {
+		server->get_nick_flags =
+			(const char *(*)(void)) get_nick_flags;
+	}
 }
 
 void irc_nicklist_init(void)
diff --git a/src/irc/core/irc-servers.c b/src/irc/core/irc-servers.c
index fc7a99ec..84b40c76 100644
--- a/src/irc/core/irc-servers.c
+++ b/src/irc/core/irc-servers.c
@@ -93,7 +93,8 @@ static void sig_server_looking(IRC_SERVER_REC *server)
 
 	server->isnickflag = isnickflag_func;
 	server->ischannel = ischannel_func;
-	server->send_message = (void *) send_message;
+	server->send_message =
+		(void (*)(void *, const char *, const char *)) send_message;
 }
 
 static void server_init(IRC_SERVER_REC *server)
diff --git a/src/irc/core/irc.c b/src/irc/core/irc.c
index 69319783..efb9a8cd 100644
--- a/src/irc/core/irc.c
+++ b/src/irc/core/irc.c
@@ -31,7 +31,6 @@
 #include "servers-redirect.h"
 
 char *current_server_event;
-static int signal_send_command;
 static int signal_default_event;
 static int signal_server_event;
 static int signal_server_incoming;
@@ -407,7 +406,6 @@ void irc_irc_init(void)
 	signal_add("server incoming", (SIGNAL_FUNC) irc_parse_incoming_line);
 
 	current_server_event = NULL;
-	signal_send_command = signal_get_uniq_id("send command");
 	signal_default_event = signal_get_uniq_id("default event");
 	signal_server_event = signal_get_uniq_id("server event");
 	signal_server_incoming = signal_get_uniq_id("server incoming");
diff --git a/src/irc/dcc/dcc-chat.c b/src/irc/dcc/dcc-chat.c
index 7a331388..f1f82647 100644
--- a/src/irc/dcc/dcc-chat.c
+++ b/src/irc/dcc/dcc-chat.c
@@ -251,7 +251,8 @@ static void dcc_chat_connect(DCC_REC *dcc)
 	dcc->handle = net_connect_ip(&dcc->addr, dcc->port,
 				     source_host_ok ? source_host_ip : NULL);
 	if (dcc->handle != -1) {
-		dcc->tagconn = g_input_add(dcc->handle, G_INPUT_WRITE|G_INPUT_READ,
+		dcc->tagconn = g_input_add(dcc->handle,
+					   (GInputCondition) (G_INPUT_WRITE|G_INPUT_READ),
 					   (GInputFunction) sig_chat_connected, dcc);
 	} else {
 		/* error connecting */
diff --git a/src/irc/dcc/dcc-files.c b/src/irc/dcc/dcc-files.c
index 4eb3c5f3..166734d5 100644
--- a/src/irc/dcc/dcc-files.c
+++ b/src/irc/dcc/dcc-files.c
@@ -198,7 +198,8 @@ static void dcc_get_connect(DCC_REC *dcc)
 	dcc->handle = net_connect_ip(&dcc->addr, dcc->port,
 				     source_host_ok ? source_host_ip : NULL);
 	if (dcc->handle != -1) {
-		dcc->tagconn = g_input_add(dcc->handle, G_INPUT_WRITE|G_INPUT_READ,
+		dcc->tagconn = g_input_add(dcc->handle,
+					   (GInputCondition) (G_INPUT_WRITE|G_INPUT_READ),
 					   (GInputFunction) sig_dccget_connected, dcc);
 	} else {
 		/* error connecting */
diff --git a/src/lib-config/get.c b/src/lib-config/get.c
index 4db6b4b7..98e2a30b 100644
--- a/src/lib-config/get.c
+++ b/src/lib-config/get.c
@@ -203,7 +203,8 @@ char *config_node_get_str(CONFIG_NODE *parent, const char *key, const char *def)
         if (parent == NULL) return (char *) def;
 
 	node = config_node_find(parent, key);
-	return (node == NULL || !has_node_value(node)) ? def : node->value;
+	return (char *) ((node != NULL && has_node_value(node)) ?
+			 node->value : def);
 }
 
 int config_node_get_int(CONFIG_NODE *parent, const char *key, int def)
diff --git a/src/lib-config/parse.c b/src/lib-config/parse.c
index 05b76975..1c468ad8 100644
--- a/src/lib-config/parse.c
+++ b/src/lib-config/parse.c
@@ -134,8 +134,9 @@ static void config_parse_loop(CONFIG_REC *rec, CONFIG_NODE *node, GTokenType exp
 static int config_parse_symbol(CONFIG_REC *rec, CONFIG_NODE *node)
 {
 	CONFIG_NODE *newnode;
+	GTokenType last_char;
 	int print_warning;
-	char *key, last_char;
+	char *key;
 
 	g_return_val_if_fail(rec != NULL, G_TOKEN_ERROR);
 	g_return_val_if_fail(node != NULL, G_TOKEN_ERROR);
@@ -182,7 +183,7 @@ static int config_parse_symbol(CONFIG_REC *rec, CONFIG_NODE *node)
 			return G_TOKEN_ERROR;
 
 		newnode = config_node_section(node, key, NODE_TYPE_BLOCK);
-		config_parse_loop(rec, newnode, '}');
+		config_parse_loop(rec, newnode, (GTokenType) '}');
 		g_free_not_null(key);
 
 		config_parse_get_token(rec->scanner, node);
@@ -197,7 +198,7 @@ static int config_parse_symbol(CONFIG_REC *rec, CONFIG_NODE *node)
 		if (key == NULL)
 			return G_TOKEN_ERROR;
 		newnode = config_node_section(node, key, NODE_TYPE_LIST);
-		config_parse_loop(rec, newnode, ')');
+		config_parse_loop(rec, newnode, (GTokenType) ')');
 		g_free_not_null(key);
 
 		config_parse_get_token(rec->scanner, node);
@@ -218,7 +219,7 @@ static int config_parse_symbol(CONFIG_REC *rec, CONFIG_NODE *node)
 
 static void config_parse_loop(CONFIG_REC *rec, CONFIG_NODE *node, GTokenType expect)
 {
-	int expected_token;
+	GTokenType expected_token;
 
 	g_return_if_fail(rec != NULL);
 	g_return_if_fail(node != NULL);
diff --git a/src/perl/common/Core.xs b/src/perl/common/Core.xs
index 4be39a84..4b7c7d48 100644
--- a/src/perl/common/Core.xs
+++ b/src/perl/common/Core.xs
@@ -122,7 +122,6 @@ command_bind(cmd, category, func)
 	char *func
 CODE:
 	char *signal;
-        GSList *tmp;
 
 	if (*category == '\0') category = "Perl scripts' commands";
 	command_bind(cmd, category, NULL);
diff --git a/src/perl/common/module.h b/src/perl/common/module.h
index 8a3e3271..f456834a 100644
--- a/src/perl/common/module.h
+++ b/src/perl/common/module.h
@@ -3,7 +3,7 @@
 #include <XSUB.h>
 
 #undef _
-#include "common.h"
+#include "../module.h"
 #include "network.h"
 #include "commands.h"
 #include "log.h"