command: make argc unsigned

src/command/AllCommands.cxx

@@ -60,15 +60,15 @@ struct command {
 	unsigned permission;
 	int min;
 	int max;
-	CommandResult (*handler)(Client &client, int argc, char **argv);
+	CommandResult (*handler)(Client &client, unsigned argc, char **argv);
 };
 
 /* don't be fooled, this is the command handler for "commands" command */
 static CommandResult
-handle_commands(Client &client, int argc, char *argv[]);
+handle_commands(Client &client, unsigned argc, char *argv[]);
 
 static CommandResult
-handle_not_commands(Client &client, int argc, char *argv[]);
+handle_not_commands(Client &client, unsigned argc, char *argv[]);
 
 /**
  * The command registry.
@@ -215,7 +215,7 @@ command_available(gcc_unused const Partition &partition,
 /* don't be fooled, this is the command handler for "commands" command */
 static CommandResult
 handle_commands(Client &client,
-		gcc_unused int argc, gcc_unused char *argv[])
+		gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	const unsigned permission = client.GetPermission();
 	const struct command *cmd;
@@ -233,7 +233,7 @@ handle_commands(Client &client,
 
 static CommandResult
 handle_not_commands(Client &client,
-		    gcc_unused int argc, gcc_unused char *argv[])
+		    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	const unsigned permission = client.GetPermission();
 	const struct command *cmd;
@@ -285,10 +285,10 @@ command_lookup(const char *name)
 
 static bool
 command_check_request(const struct command *cmd, Client &client,
-		      unsigned permission, int argc, char *argv[])
+		      unsigned permission, unsigned argc, char *argv[])
 {
-	int min = cmd->min + 1;
-	int max = cmd->max + 1;
+	const unsigned min = cmd->min + 1;
+	const unsigned max = cmd->max + 1;
 
 	if (cmd->permission != (permission & cmd->permission)) {
 		command_error(client, ACK_ERROR_PERMISSION,
@@ -319,7 +319,7 @@ command_check_request(const struct command *cmd, Client &client,
 
 static const struct command *
 command_checked_lookup(Client &client, unsigned permission,
-		       int argc, char *argv[])
+		       unsigned argc, char *argv[])
 {
 	const struct command *cmd;
 

src/command/DatabaseCommands.cxx

@@ -48,7 +48,7 @@ handle_listfiles_db(Client &client, const char *uri)
 }
 
 CommandResult
-handle_lsinfo2(Client &client, int argc, char *argv[])
+handle_lsinfo2(Client &client, unsigned argc, char *argv[])
 {
 	const char *const uri = argc == 2
 		? argv[1]
@@ -65,7 +65,7 @@ handle_lsinfo2(Client &client, int argc, char *argv[])
 }
 
 static CommandResult
-handle_match(Client &client, int argc, char *argv[], bool fold_case)
+handle_match(Client &client, unsigned argc, char *argv[], bool fold_case)
 {
 	ConstBuffer<const char *> args(argv + 1, argc - 1);
 
@@ -84,19 +84,19 @@ handle_match(Client &client, int argc, char *argv[], bool fold_case)
 }
 
 CommandResult
-handle_find(Client &client, int argc, char *argv[])
+handle_find(Client &client, unsigned argc, char *argv[])
 {
 	return handle_match(client, argc, argv, false);
 }
 
 CommandResult
-handle_search(Client &client, int argc, char *argv[])
+handle_search(Client &client, unsigned argc, char *argv[])
 {
 	return handle_match(client, argc, argv, true);
 }
 
 static CommandResult
-handle_match_add(Client &client, int argc, char *argv[], bool fold_case)
+handle_match_add(Client &client, unsigned argc, char *argv[], bool fold_case)
 {
 	ConstBuffer<const char *> args(argv + 1, argc - 1);
 
@@ -114,19 +114,19 @@ handle_match_add(Client &client, int argc, char *argv[], bool fold_case)
 }
 
 CommandResult
-handle_findadd(Client &client, int argc, char *argv[])
+handle_findadd(Client &client, unsigned argc, char *argv[])
 {
 	return handle_match_add(client, argc, argv, false);
 }
 
 CommandResult
-handle_searchadd(Client &client, int argc, char *argv[])
+handle_searchadd(Client &client, unsigned argc, char *argv[])
 {
 	return handle_match_add(client, argc, argv, true);
 }
 
 CommandResult
-handle_searchaddpl(Client &client, int argc, char *argv[])
+handle_searchaddpl(Client &client, unsigned argc, char *argv[])
 {
 	ConstBuffer<const char *> args(argv + 1, argc - 1);
 	const char *playlist = args.shift();
@@ -149,7 +149,7 @@ handle_searchaddpl(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_count(Client &client, int argc, char *argv[])
+handle_count(Client &client, unsigned argc, char *argv[])
 {
 	ConstBuffer<const char *> args(argv + 1, argc - 1);
 
@@ -180,7 +180,7 @@ handle_count(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_listall(Client &client, gcc_unused int argc, char *argv[])
+handle_listall(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	const char *directory = "";
 
@@ -195,7 +195,7 @@ handle_listall(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_list(Client &client, int argc, char *argv[])
+handle_list(Client &client, unsigned argc, char *argv[])
 {
 	ConstBuffer<const char *> args(argv + 1, argc - 1);
 	const char *tag_name = args.shift();
@@ -268,7 +268,7 @@ handle_list(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_listallinfo(Client &client, gcc_unused int argc, char *argv[])
+handle_listallinfo(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	const char *directory = "";
 

src/command/DatabaseCommands.hxx

@@ -28,33 +28,33 @@ CommandResult
 handle_listfiles_db(Client &client, const char *uri);
 
 CommandResult
-handle_lsinfo2(Client &client, int argc, char *argv[]);
+handle_lsinfo2(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_find(Client &client, int argc, char *argv[]);
+handle_find(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_findadd(Client &client, int argc, char *argv[]);
+handle_findadd(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_search(Client &client, int argc, char *argv[]);
+handle_search(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_searchadd(Client &client, int argc, char *argv[]);
+handle_searchadd(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_searchaddpl(Client &client, int argc, char *argv[]);
+handle_searchaddpl(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_count(Client &client, int argc, char *argv[]);
+handle_count(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_listall(Client &client, int argc, char *argv[]);
+handle_listall(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_list(Client &client, int argc, char *argv[]);
+handle_list(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_listallinfo(Client &client, int argc, char *argv[]);
+handle_listallinfo(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/FileCommands.cxx

@@ -201,7 +201,7 @@ read_file_comments(Client &client, const Path path_fs)
 }
 
 CommandResult
-handle_read_comments(Client &client, gcc_unused int argc, char *argv[])
+handle_read_comments(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	assert(argc == 2);
 

src/command/FileCommands.hxx

@@ -28,6 +28,6 @@ CommandResult
 handle_listfiles_local(Client &client, const char *path_utf8);
 
 CommandResult
-handle_read_comments(Client &client, int argc, char *argv[]);
+handle_read_comments(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/MessageCommands.cxx

@@ -31,7 +31,7 @@
 #include <assert.h>
 
 CommandResult
-handle_subscribe(Client &client, gcc_unused int argc, char *argv[])
+handle_subscribe(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	assert(argc == 2);
 
@@ -61,7 +61,7 @@ handle_subscribe(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_unsubscribe(Client &client, gcc_unused int argc, char *argv[])
+handle_unsubscribe(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	assert(argc == 2);
 
@@ -76,7 +76,7 @@ handle_unsubscribe(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_channels(Client &client,
-		gcc_unused int argc, gcc_unused char *argv[])
+		gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	assert(argc == 1);
 
@@ -93,7 +93,7 @@ handle_channels(Client &client,
 
 CommandResult
 handle_read_messages(Client &client,
-		     gcc_unused int argc, gcc_unused char *argv[])
+		     gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	assert(argc == 1);
 
@@ -110,7 +110,7 @@ handle_read_messages(Client &client,
 
 CommandResult
 handle_send_message(Client &client,
-		    gcc_unused int argc, gcc_unused char *argv[])
+		    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	assert(argc == 3);
 

src/command/MessageCommands.hxx

@@ -25,18 +25,18 @@
 class Client;
 
 CommandResult
-handle_subscribe(Client &client, int argc, char *argv[]);
+handle_subscribe(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_unsubscribe(Client &client, int argc, char *argv[]);
+handle_unsubscribe(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_channels(Client &client, int argc, char *argv[]);
+handle_channels(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_read_messages(Client &client, int argc, char *argv[]);
+handle_read_messages(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_send_message(Client &client, int argc, char *argv[]);
+handle_send_message(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/NeighborCommands.cxx

@@ -39,7 +39,7 @@ neighbor_commands_available(const Instance &instance)
 
 CommandResult
 handle_listneighbors(Client &client,
-		     gcc_unused int argc, gcc_unused char *argv[])
+		     gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	const NeighborGlue *const neighbors =
 		client.partition.instance.neighbors;

src/command/NeighborCommands.hxx

@@ -31,6 +31,6 @@ bool
 neighbor_commands_available(const Instance &instance);
 
 CommandResult
-handle_listneighbors(Client &client, int argc, char *argv[]);
+handle_listneighbors(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/OtherCommands.cxx

@@ -68,7 +68,7 @@ print_spl_list(Client &client, const PlaylistVector &list)
 
 CommandResult
 handle_urlhandlers(Client &client,
-		   gcc_unused int argc, gcc_unused char *argv[])
+		   gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	if (client.IsLocal())
 		client_puts(client, "handler: file://\n");
@@ -78,7 +78,7 @@ handle_urlhandlers(Client &client,
 
 CommandResult
 handle_decoders(Client &client,
-		gcc_unused int argc, gcc_unused char *argv[])
+		gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	decoder_list_print(client);
 	return CommandResult::OK;
@@ -86,7 +86,7 @@ handle_decoders(Client &client,
 
 CommandResult
 handle_tagtypes(Client &client,
-		gcc_unused int argc, gcc_unused char *argv[])
+		gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	tag_print_types(client);
 	return CommandResult::OK;
@@ -94,14 +94,14 @@ handle_tagtypes(Client &client,
 
 CommandResult
 handle_kill(gcc_unused Client &client,
-	    gcc_unused int argc, gcc_unused char *argv[])
+	    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	return CommandResult::KILL;
 }
 
 CommandResult
 handle_close(gcc_unused Client &client,
-	     gcc_unused int argc, gcc_unused char *argv[])
+	     gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	return CommandResult::FINISH;
 }
@@ -115,7 +115,7 @@ print_tag(TagType type, const char *value, void *ctx)
 }
 
 CommandResult
-handle_listfiles(Client &client, int argc, char *argv[])
+handle_listfiles(Client &client, unsigned argc, char *argv[])
 {
 	const char *const uri = argc == 2
 		? argv[1]
@@ -156,7 +156,7 @@ static constexpr tag_handler print_tag_handler = {
 };
 
 CommandResult
-handle_lsinfo(Client &client, int argc, char *argv[])
+handle_lsinfo(Client &client, unsigned argc, char *argv[])
 {
 	const char *const uri = argc == 2
 		? argv[1]
@@ -226,7 +226,7 @@ handle_lsinfo(Client &client, int argc, char *argv[])
 }
 
 static CommandResult
-handle_update(Client &client, int argc, char *argv[], bool discard)
+handle_update(Client &client, unsigned argc, char *argv[], bool discard)
 {
 #ifdef ENABLE_DATABASE
 	const char *path = "";
@@ -272,19 +272,19 @@ handle_update(Client &client, int argc, char *argv[], bool discard)
 }
 
 CommandResult
-handle_update(Client &client, gcc_unused int argc, char *argv[])
+handle_update(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	return handle_update(client, argc, argv, false);
 }
 
 CommandResult
-handle_rescan(Client &client, gcc_unused int argc, char *argv[])
+handle_rescan(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	return handle_update(client, argc, argv, true);
 }
 
 CommandResult
-handle_setvol(Client &client, gcc_unused int argc, char *argv[])
+handle_setvol(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned level;
 	bool success;
@@ -308,7 +308,7 @@ handle_setvol(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_volume(Client &client, gcc_unused int argc, char *argv[])
+handle_volume(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	int relative;
 	if (!check_int(client, &relative, argv[1]))
@@ -343,7 +343,7 @@ handle_volume(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_stats(Client &client,
-	     gcc_unused int argc, gcc_unused char *argv[])
+	     gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	stats_print(client);
 	return CommandResult::OK;
@@ -351,13 +351,13 @@ handle_stats(Client &client,
 
 CommandResult
 handle_ping(gcc_unused Client &client,
-	    gcc_unused int argc, gcc_unused char *argv[])
+	    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	return CommandResult::OK;
 }
 
 CommandResult
-handle_password(Client &client, gcc_unused int argc, char *argv[])
+handle_password(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned permission = 0;
 
@@ -373,7 +373,7 @@ handle_password(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_config(Client &client,
-	      gcc_unused int argc, gcc_unused char *argv[])
+	      gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	if (!client.IsLocal()) {
 		command_error(client, ACK_ERROR_PERMISSION,
@@ -394,12 +394,11 @@ handle_config(Client &client,
 
 CommandResult
 handle_idle(Client &client,
-	    gcc_unused int argc, gcc_unused char *argv[])
+	    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	unsigned flags = 0;
-	int i;
 
-	for (i = 1; i < argc; ++i) {
+	for (unsigned i = 1; i < argc; ++i) {
 		unsigned event = idle_parse_name(argv[i]);
 		if (event == 0) {
 			command_error(client, ACK_ERROR_ARG,

src/command/OtherCommands.hxx

@@ -25,51 +25,51 @@
 class Client;
 
 CommandResult
-handle_urlhandlers(Client &client, int argc, char *argv[]);
+handle_urlhandlers(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_decoders(Client &client, int argc, char *argv[]);
+handle_decoders(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_tagtypes(Client &client, int argc, char *argv[]);
+handle_tagtypes(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_kill(Client &client, int argc, char *argv[]);
+handle_kill(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_close(Client &client, int argc, char *argv[]);
+handle_close(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_listfiles(Client &client, int argc, char *argv[]);
+handle_listfiles(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_lsinfo(Client &client, int argc, char *argv[]);
+handle_lsinfo(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_update(Client &client, int argc, char *argv[]);
+handle_update(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_rescan(Client &client, int argc, char *argv[]);
+handle_rescan(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_setvol(Client &client, int argc, char *argv[]);
+handle_setvol(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_volume(Client &client, int argc, char *argv[]);
+handle_volume(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_stats(Client &client, int argc, char *argv[]);
+handle_stats(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_ping(Client &client, int argc, char *argv[]);
+handle_ping(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_password(Client &client, int argc, char *argv[]);
+handle_password(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_config(Client &client, int argc, char *argv[]);
+handle_config(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_idle(Client &client, int argc, char *argv[]);
+handle_idle(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/OutputCommands.cxx

@@ -27,7 +27,7 @@
 #include "Partition.hxx"
 
 CommandResult
-handle_enableoutput(Client &client, gcc_unused int argc, char *argv[])
+handle_enableoutput(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned device;
 	if (!check_unsigned(client, &device, argv[1]))
@@ -43,7 +43,7 @@ handle_enableoutput(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_disableoutput(Client &client, gcc_unused int argc, char *argv[])
+handle_disableoutput(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned device;
 	if (!check_unsigned(client, &device, argv[1]))
@@ -59,7 +59,7 @@ handle_disableoutput(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_toggleoutput(Client &client, gcc_unused int argc, char *argv[])
+handle_toggleoutput(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned device;
 	if (!check_unsigned(client, &device, argv[1]))
@@ -76,7 +76,7 @@ handle_toggleoutput(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_devices(Client &client,
-	       gcc_unused int argc, gcc_unused char *argv[])
+	       gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	printAudioDevices(client, client.partition.outputs);
 

src/command/OutputCommands.hxx

@@ -25,15 +25,15 @@
 class Client;
 
 CommandResult
-handle_enableoutput(Client &client, int argc, char *argv[]);
+handle_enableoutput(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_disableoutput(Client &client, int argc, char *argv[]);
+handle_disableoutput(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_toggleoutput(Client &client, int argc, char *argv[]);
+handle_toggleoutput(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_devices(Client &client, int argc, char *argv[]);
+handle_devices(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/PlayerCommands.cxx

@@ -56,7 +56,7 @@
 #define COMMAND_STATUS_UPDATING_DB	"updating_db"
 
 CommandResult
-handle_play(Client &client, int argc, char *argv[])
+handle_play(Client &client, unsigned argc, char *argv[])
 {
 	int song = -1;
 
@@ -67,7 +67,7 @@ handle_play(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_playid(Client &client, int argc, char *argv[])
+handle_playid(Client &client, unsigned argc, char *argv[])
 {
 	int id = -1;
 
@@ -80,7 +80,7 @@ handle_playid(Client &client, int argc, char *argv[])
 
 CommandResult
 handle_stop(Client &client,
-	    gcc_unused int argc, gcc_unused char *argv[])
+	    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	client.partition.Stop();
 	return CommandResult::OK;
@@ -88,7 +88,7 @@ handle_stop(Client &client,
 
 CommandResult
 handle_currentsong(Client &client,
-		   gcc_unused int argc, gcc_unused char *argv[])
+		   gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	playlist_print_current(client, client.playlist);
 	return CommandResult::OK;
@@ -96,7 +96,7 @@ handle_currentsong(Client &client,
 
 CommandResult
 handle_pause(Client &client,
-	     int argc, char *argv[])
+	     unsigned argc, char *argv[])
 {
 	if (argc == 2) {
 		bool pause_flag;
@@ -112,7 +112,7 @@ handle_pause(Client &client,
 
 CommandResult
 handle_status(Client &client,
-	      gcc_unused int argc, gcc_unused char *argv[])
+	      gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	const char *state = nullptr;
 	int song;
@@ -221,7 +221,7 @@ handle_status(Client &client,
 
 CommandResult
 handle_next(Client &client,
-	    gcc_unused int argc, gcc_unused char *argv[])
+	    gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	playlist &playlist = client.playlist;
 
@@ -238,14 +238,14 @@ handle_next(Client &client,
 
 CommandResult
 handle_previous(Client &client,
-		gcc_unused int argc, gcc_unused char *argv[])
+		gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	client.partition.PlayPrevious();
 	return CommandResult::OK;
 }
 
 CommandResult
-handle_repeat(Client &client, gcc_unused int argc, char *argv[])
+handle_repeat(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	bool status;
 	if (!check_bool(client, &status, argv[1]))
@@ -256,7 +256,7 @@ handle_repeat(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_single(Client &client, gcc_unused int argc, char *argv[])
+handle_single(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	bool status;
 	if (!check_bool(client, &status, argv[1]))
@@ -267,7 +267,7 @@ handle_single(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_consume(Client &client, gcc_unused int argc, char *argv[])
+handle_consume(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	bool status;
 	if (!check_bool(client, &status, argv[1]))
@@ -278,7 +278,7 @@ handle_consume(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_random(Client &client, gcc_unused int argc, char *argv[])
+handle_random(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	bool status;
 	if (!check_bool(client, &status, argv[1]))
@@ -291,14 +291,14 @@ handle_random(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_clearerror(gcc_unused Client &client,
-		  gcc_unused int argc, gcc_unused char *argv[])
+		  gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	client.player_control.ClearError();
 	return CommandResult::OK;
 }
 
 CommandResult
-handle_seek(Client &client, gcc_unused int argc, char *argv[])
+handle_seek(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned song, seek_time;
 
@@ -313,7 +313,7 @@ handle_seek(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_seekid(Client &client, gcc_unused int argc, char *argv[])
+handle_seekid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned id, seek_time;
 
@@ -328,7 +328,7 @@ handle_seekid(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_seekcur(Client &client, gcc_unused int argc, char *argv[])
+handle_seekcur(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	const char *p = argv[1];
 	bool relative = *p == '+' || *p == '-';
@@ -342,7 +342,7 @@ handle_seekcur(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_crossfade(Client &client, gcc_unused int argc, char *argv[])
+handle_crossfade(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned xfade_time;
 
@@ -354,7 +354,7 @@ handle_crossfade(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_mixrampdb(Client &client, gcc_unused int argc, char *argv[])
+handle_mixrampdb(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	float db;
 
@@ -366,7 +366,7 @@ handle_mixrampdb(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_mixrampdelay(Client &client, gcc_unused int argc, char *argv[])
+handle_mixrampdelay(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	float delay_secs;
 
@@ -379,7 +379,7 @@ handle_mixrampdelay(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_replay_gain_mode(Client &client,
-			gcc_unused int argc, char *argv[])
+			gcc_unused unsigned argc, char *argv[])
 {
 	if (!replay_gain_set_mode_string(argv[1])) {
 		command_error(client, ACK_ERROR_ARG,
@@ -393,7 +393,7 @@ handle_replay_gain_mode(Client &client,
 
 CommandResult
 handle_replay_gain_status(Client &client,
-			  gcc_unused int argc, gcc_unused char *argv[])
+			  gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	client_printf(client, "replay_gain_mode: %s\n",
 		      replay_gain_get_mode_string());

src/command/PlayerCommands.hxx

@@ -25,66 +25,66 @@
 class Client;
 
 CommandResult
-handle_play(Client &client, int argc, char *argv[]);
+handle_play(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playid(Client &client, int argc, char *argv[]);
+handle_playid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_stop(Client &client, int argc, char *argv[]);
+handle_stop(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_currentsong(Client &client, int argc, char *argv[]);
+handle_currentsong(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_pause(Client &client, int argc, char *argv[]);
+handle_pause(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_status(Client &client, int argc, char *argv[]);
+handle_status(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_next(Client &client, int argc, char *argv[]);
+handle_next(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_previous(Client &client, int argc, char *avg[]);
+handle_previous(Client &client, unsigned argc, char *avg[]);
 
 CommandResult
-handle_repeat(Client &client, int argc, char *argv[]);
+handle_repeat(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_single(Client &client, int argc, char *argv[]);
+handle_single(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_consume(Client &client, int argc, char *argv[]);
+handle_consume(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_random(Client &client, int argc, char *argv[]);
+handle_random(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_clearerror(Client &client, int argc, char *argv[]);
+handle_clearerror(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_seek(Client &client, int argc, char *argv[]);
+handle_seek(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_seekid(Client &client, int argc, char *argv[]);
+handle_seekid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_seekcur(Client &client, int argc, char *argv[]);
+handle_seekcur(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_crossfade(Client &client, int argc, char *argv[]);
+handle_crossfade(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_mixrampdb(Client &client, int argc, char *argv[]);
+handle_mixrampdb(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_mixrampdelay(Client &client, int argc, char *argv[]);
+handle_mixrampdelay(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_replay_gain_mode(Client &client, int argc, char *argv[]);
+handle_replay_gain_mode(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_replay_gain_status(Client &client, int argc, char *argv[]);
+handle_replay_gain_status(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/PlaylistCommands.cxx

@@ -49,14 +49,14 @@ print_spl_list(Client &client, const PlaylistVector &list)
 }
 
 CommandResult
-handle_save(Client &client, gcc_unused int argc, char *argv[])
+handle_save(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	PlaylistResult result = spl_save_playlist(argv[1], client.playlist);
 	return print_playlist_result(client, result);
 }
 
 CommandResult
-handle_load(Client &client, int argc, char *argv[])
+handle_load(Client &client, unsigned argc, char *argv[])
 {
 	unsigned start_index, end_index;
 
@@ -78,7 +78,7 @@ handle_load(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_listplaylist(Client &client, gcc_unused int argc, char *argv[])
+handle_listplaylist(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	if (playlist_file_print(client, argv[1], false))
 		return CommandResult::OK;
@@ -91,7 +91,7 @@ handle_listplaylist(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_listplaylistinfo(Client &client,
-			gcc_unused int argc, char *argv[])
+			gcc_unused unsigned argc, char *argv[])
 {
 	if (playlist_file_print(client, argv[1], true))
 		return CommandResult::OK;
@@ -103,7 +103,7 @@ handle_listplaylistinfo(Client &client,
 }
 
 CommandResult
-handle_rm(Client &client, gcc_unused int argc, char *argv[])
+handle_rm(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	Error error;
 	return spl_delete(argv[1], error)
@@ -112,7 +112,7 @@ handle_rm(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_rename(Client &client, gcc_unused int argc, char *argv[])
+handle_rename(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	Error error;
 	return spl_rename(argv[1], argv[2], error)
@@ -122,7 +122,7 @@ handle_rename(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_playlistdelete(Client &client,
-		      gcc_unused int argc, char *argv[]) {
+		      gcc_unused unsigned argc, char *argv[]) {
 	char *playlist = argv[1];
 	unsigned from;
 
@@ -136,7 +136,7 @@ handle_playlistdelete(Client &client,
 }
 
 CommandResult
-handle_playlistmove(Client &client, gcc_unused int argc, char *argv[])
+handle_playlistmove(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	char *playlist = argv[1];
 	unsigned from, to;
@@ -153,7 +153,7 @@ handle_playlistmove(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_playlistclear(Client &client, gcc_unused int argc, char *argv[])
+handle_playlistclear(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	Error error;
 	return spl_clear(argv[1], error)
@@ -162,7 +162,7 @@ handle_playlistclear(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_playlistadd(Client &client, gcc_unused int argc, char *argv[])
+handle_playlistadd(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	char *playlist = argv[1];
 	char *uri = argv[2];
@@ -197,7 +197,7 @@ handle_playlistadd(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_listplaylists(Client &client,
-		     gcc_unused int argc, gcc_unused char *argv[])
+		     gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	Error error;
 	const auto list = ListPlaylistFiles(error);

src/command/PlaylistCommands.hxx

@@ -25,36 +25,36 @@
 class Client;
 
 CommandResult
-handle_save(Client &client, int argc, char *argv[]);
+handle_save(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_load(Client &client, int argc, char *argv[]);
+handle_load(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_listplaylist(Client &client, int argc, char *argv[]);
+handle_listplaylist(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_listplaylistinfo(Client &client, int argc, char *argv[]);
+handle_listplaylistinfo(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_rm(Client &client, int argc, char *argv[]);
+handle_rm(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_rename(Client &client, int argc, char *argv[]);
+handle_rename(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistdelete(Client &client, int argc, char *argv[]);
+handle_playlistdelete(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistmove(Client &client, int argc, char *argv[]);
+handle_playlistmove(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistclear(Client &client, int argc, char *argv[]);
+handle_playlistclear(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistadd(Client &client, int argc, char *argv[]);
+handle_playlistadd(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_listplaylists(Client &client, int argc, char *argv[]);
+handle_listplaylists(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/QueueCommands.cxx

@@ -57,7 +57,7 @@ translate_uri(Client &client, const char *uri)
 }
 
 CommandResult
-handle_add(Client &client, gcc_unused int argc, char *argv[])
+handle_add(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	const char *const uri = translate_uri(client, argv[1]);
 	if (uri == nullptr)
@@ -86,7 +86,7 @@ handle_add(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_addid(Client &client, int argc, char *argv[])
+handle_addid(Client &client, unsigned argc, char *argv[])
 {
 	const char *const uri = translate_uri(client, argv[1]);
 	if (uri == nullptr)
@@ -116,7 +116,7 @@ handle_addid(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_delete(Client &client, gcc_unused int argc, char *argv[])
+handle_delete(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned start, end;
 
@@ -128,7 +128,7 @@ handle_delete(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_deleteid(Client &client, gcc_unused int argc, char *argv[])
+handle_deleteid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned id;
 
@@ -141,7 +141,7 @@ handle_deleteid(Client &client, gcc_unused int argc, char *argv[])
 
 CommandResult
 handle_playlist(Client &client,
-		gcc_unused int argc, gcc_unused char *argv[])
+		gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	playlist_print_uris(client, client.playlist);
 	return CommandResult::OK;
@@ -149,7 +149,7 @@ handle_playlist(Client &client,
 
 CommandResult
 handle_shuffle(gcc_unused Client &client,
-	       gcc_unused int argc, gcc_unused char *argv[])
+	       gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	unsigned start = 0, end = client.playlist.queue.GetLength();
 	if (argc == 2 && !check_range(client, &start, &end, argv[1]))
@@ -161,14 +161,14 @@ handle_shuffle(gcc_unused Client &client,
 
 CommandResult
 handle_clear(gcc_unused Client &client,
-	     gcc_unused int argc, gcc_unused char *argv[])
+	     gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	client.partition.ClearQueue();
 	return CommandResult::OK;
 }
 
 CommandResult
-handle_plchanges(Client &client, gcc_unused int argc, char *argv[])
+handle_plchanges(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	uint32_t version;
 
@@ -180,7 +180,7 @@ handle_plchanges(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_plchangesposid(Client &client, gcc_unused int argc, char *argv[])
+handle_plchangesposid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	uint32_t version;
 
@@ -192,7 +192,7 @@ handle_plchangesposid(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_playlistinfo(Client &client, int argc, char *argv[])
+handle_playlistinfo(Client &client, unsigned argc, char *argv[])
 {
 	unsigned start = 0, end = std::numeric_limits<unsigned>::max();
 	bool ret;
@@ -209,7 +209,7 @@ handle_playlistinfo(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_playlistid(Client &client, int argc, char *argv[])
+handle_playlistid(Client &client, unsigned argc, char *argv[])
 {
 	if (argc >= 2) {
 		unsigned id;
@@ -229,7 +229,7 @@ handle_playlistid(Client &client, int argc, char *argv[])
 }
 
 static CommandResult
-handle_playlist_match(Client &client, int argc, char *argv[],
+handle_playlist_match(Client &client, unsigned argc, char *argv[],
 		      bool fold_case)
 {
 	ConstBuffer<const char *> args(argv + 1, argc - 1);
@@ -245,19 +245,19 @@ handle_playlist_match(Client &client, int argc, char *argv[],
 }
 
 CommandResult
-handle_playlistfind(Client &client, int argc, char *argv[])
+handle_playlistfind(Client &client, unsigned argc, char *argv[])
 {
 	return handle_playlist_match(client, argc, argv, false);
 }
 
 CommandResult
-handle_playlistsearch(Client &client, int argc, char *argv[])
+handle_playlistsearch(Client &client, unsigned argc, char *argv[])
 {
 	return handle_playlist_match(client, argc, argv, true);
 }
 
 CommandResult
-handle_prio(Client &client, int argc, char *argv[])
+handle_prio(Client &client, unsigned argc, char *argv[])
 {
 	unsigned priority;
 
@@ -270,7 +270,7 @@ handle_prio(Client &client, int argc, char *argv[])
 		return CommandResult::ERROR;
 	}
 
-	for (int i = 2; i < argc; ++i) {
+	for (unsigned i = 2; i < argc; ++i) {
 		unsigned start_position, end_position;
 		if (!check_range(client, &start_position, &end_position,
 				 argv[i]))
@@ -288,7 +288,7 @@ handle_prio(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_prioid(Client &client, int argc, char *argv[])
+handle_prioid(Client &client, unsigned argc, char *argv[])
 {
 	unsigned priority;
 
@@ -301,7 +301,7 @@ handle_prioid(Client &client, int argc, char *argv[])
 		return CommandResult::ERROR;
 	}
 
-	for (int i = 2; i < argc; ++i) {
+	for (unsigned i = 2; i < argc; ++i) {
 		unsigned song_id;
 		if (!check_unsigned(client, &song_id, argv[i]))
 			return CommandResult::ERROR;
@@ -316,7 +316,7 @@ handle_prioid(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_move(Client &client, gcc_unused int argc, char *argv[])
+handle_move(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned start, end;
 	int to;
@@ -332,7 +332,7 @@ handle_move(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_moveid(Client &client, gcc_unused int argc, char *argv[])
+handle_moveid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned id;
 	int to;
@@ -346,7 +346,7 @@ handle_moveid(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_swap(Client &client, gcc_unused int argc, char *argv[])
+handle_swap(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned song1, song2;
 
@@ -361,7 +361,7 @@ handle_swap(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_swapid(Client &client, gcc_unused int argc, char *argv[])
+handle_swapid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned id1, id2;
 

src/command/QueueCommands.hxx

@@ -25,60 +25,60 @@
 class Client;
 
 CommandResult
-handle_add(Client &client, int argc, char *argv[]);
+handle_add(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_addid(Client &client, int argc, char *argv[]);
+handle_addid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_delete(Client &client, int argc, char *argv[]);
+handle_delete(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_deleteid(Client &client, int argc, char *argv[]);
+handle_deleteid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlist(Client &client, int argc, char *argv[]);
+handle_playlist(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_shuffle(Client &client, int argc, char *argv[]);
+handle_shuffle(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_clear(Client &client, int argc, char *argv[]);
+handle_clear(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_plchanges(Client &client, int argc, char *argv[]);
+handle_plchanges(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_plchangesposid(Client &client, int argc, char *argv[]);
+handle_plchangesposid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistinfo(Client &client, int argc, char *argv[]);
+handle_playlistinfo(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistid(Client &client, int argc, char *argv[]);
+handle_playlistid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistfind(Client &client, int argc, char *argv[]);
+handle_playlistfind(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_playlistsearch(Client &client, int argc, char *argv[]);
+handle_playlistsearch(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_prio(Client &client, int argc, char *argv[]);
+handle_prio(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_prioid(Client &client, int argc, char *argv[]);
+handle_prioid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_move(Client &client, int argc, char *argv[]);
+handle_move(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_moveid(Client &client, int argc, char *argv[]);
+handle_moveid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_swap(Client &client, int argc, char *argv[]);
+handle_swap(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_swapid(Client &client, int argc, char *argv[]);
+handle_swapid(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/StickerCommands.cxx

@@ -51,7 +51,7 @@ sticker_song_find_print_cb(const LightSong &song, const char *value,
 }
 
 static CommandResult
-handle_sticker_song(Client &client, int argc, char *argv[])
+handle_sticker_song(Client &client, unsigned argc, char *argv[])
 {
 	Error error;
 	const Database *db = client.GetDatabase(error);
@@ -150,7 +150,7 @@ handle_sticker_song(Client &client, int argc, char *argv[])
 }
 
 CommandResult
-handle_sticker(Client &client, int argc, char *argv[])
+handle_sticker(Client &client, unsigned argc, char *argv[])
 {
 	assert(argc >= 4);
 

src/command/StickerCommands.hxx

@@ -25,6 +25,6 @@
 class Client;
 
 CommandResult
-handle_sticker(Client &client, int argc, char *argv[]);
+handle_sticker(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/StorageCommands.cxx

@@ -166,7 +166,7 @@ print_storage_uri(Client &client, const Storage &storage)
 }
 
 CommandResult
-handle_listmounts(Client &client, gcc_unused int argc, gcc_unused char *argv[])
+handle_listmounts(Client &client, gcc_unused unsigned argc, gcc_unused char *argv[])
 {
 	Storage *_composite = client.partition.instance.storage;
 	if (_composite == nullptr) {
@@ -188,7 +188,7 @@ handle_listmounts(Client &client, gcc_unused int argc, gcc_unused char *argv[])
 }
 
 CommandResult
-handle_mount(Client &client, gcc_unused int argc, char *argv[])
+handle_mount(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	Storage *_composite = client.partition.instance.storage;
 	if (_composite == nullptr) {
@@ -250,7 +250,7 @@ handle_mount(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_unmount(Client &client, gcc_unused int argc, char *argv[])
+handle_unmount(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	Storage *_composite = client.partition.instance.storage;
 	if (_composite == nullptr) {

src/command/StorageCommands.hxx

@@ -32,12 +32,12 @@ CommandResult
 handle_listfiles_storage(Client &client, const char *uri);
 
 CommandResult
-handle_listmounts(Client &client, int argc, char *argv[]);
+handle_listmounts(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_mount(Client &client, int argc, char *argv[]);
+handle_mount(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_unmount(Client &client, int argc, char *argv[]);
+handle_unmount(Client &client, unsigned argc, char *argv[]);
 
 #endif

src/command/TagCommands.cxx

@@ -27,7 +27,7 @@
 #include "Partition.hxx"
 
 CommandResult
-handle_addtagid(Client &client, gcc_unused int argc, char *argv[])
+handle_addtagid(Client &client, gcc_unused unsigned argc, char *argv[])
 {
 	unsigned song_id;
 	if (!check_unsigned(client, &song_id, argv[1]))
@@ -52,7 +52,7 @@ handle_addtagid(Client &client, gcc_unused int argc, char *argv[])
 }
 
 CommandResult
-handle_cleartagid(Client &client, int argc, char *argv[])
+handle_cleartagid(Client &client, unsigned argc, char *argv[])
 {
 	unsigned song_id;
 	if (!check_unsigned(client, &song_id, argv[1]))

src/command/TagCommands.hxx

@@ -25,9 +25,9 @@
 class Client;
 
 CommandResult
-handle_addtagid(Client &client, int argc, char *argv[]);
+handle_addtagid(Client &client, unsigned argc, char *argv[]);
 
 CommandResult
-handle_cleartagid(Client &client, int argc, char *argv[]);
+handle_cleartagid(Client &client, unsigned argc, char *argv[]);
 
 #endif