Add signedness warning flag and fix fallout

clients/dnd.c

@@ -168,7 +168,7 @@ dnd_redraw_handler(struct widget *widget, void *data)
 	struct rectangle allocation;
 	cairo_t *cr;
 	cairo_surface_t *surface;
-	int i;
+	unsigned int i;
 
 	surface = window_get_surface(dnd->window);
 	cr = cairo_create(surface);
@@ -206,7 +206,7 @@ keyboard_focus_handler(struct window *window,
 static int
 dnd_add_item(struct dnd *dnd, struct item *item)
 {
-	int i;
+	unsigned int i;
 
 	for (i = 0; i < ARRAY_LENGTH(dnd->items); i++) {
 		if (dnd->items[i] == 0) {
@@ -222,7 +222,7 @@ dnd_get_item(struct dnd *dnd, int32_t x, int32_t y)
 {
 	struct item *item;
 	struct rectangle allocation;
-	int i;
+	unsigned int i;
 
 	widget_get_allocation(dnd->widget, &allocation);
 
@@ -369,7 +369,7 @@ dnd_button_handler(struct widget *widget,
 	struct display *display;
 	struct wl_compositor *compositor;
 	struct wl_buffer *buffer;
-	int i;
+	unsigned int i;
 
 	widget_get_allocation(dnd->widget, &allocation);
 	input_get_position(input, &x, &y);
@@ -518,8 +518,9 @@ static struct dnd *
 dnd_create(struct display *display)
 {
 	struct dnd *dnd;
-	int i, x, y;
+	int x, y;
 	int32_t width, height;
+	unsigned int i;
 
 	dnd = malloc(sizeof *dnd);
 	if (dnd == NULL)

clients/eventdemo.c

@@ -86,7 +86,7 @@ struct eventdemo {
 	struct widget *widget;
 	struct display *display;
 
-	unsigned int x, y, w, h;
+	int x, y, w, h;
 };
 
 /**

clients/gears.c

@@ -63,7 +63,7 @@ struct gear_template {
 	GLfloat tooth_depth;
 };
 
-const static struct gear_template gear_templates[] = {
+static const struct gear_template gear_templates[] = {
 	{ { 0.8, 0.1, 0.0, 1.0 }, 1.0, 4.0, 1.0, 20, 0.7 },
 	{ { 0.0, 0.8, 0.2, 1.0 }, 0.5, 2.0, 2.0, 10, 0.7 },
 	{ { 0.2, 0.2, 1.0, 1.0 }, 1.3, 2.0, 0.5, 10, 0.7 }, 

clients/glmatrix.c

@@ -257,7 +257,7 @@ reset_strip (ModeInfo *mi, strip *s)
         (i < GRID_SIZE-5) &&   /* display approx. once per 5 strips */
 	!(random() % (GRID_SIZE-5)*5))
       {
-	int j;
+        unsigned int j;
 	char text[80];
         time_t now = time ((time_t *) 0);
         struct tm *tm = localtime (&now);

clients/simple-touch.c

@@ -166,7 +166,7 @@ touch_paint(struct touch *touch, int32_t x, int32_t y, int32_t id)
 		0xffff00ff,
 	};
 
-	if (id < ARRAY_LENGTH(colors))
+	if (id < (int32_t) ARRAY_LENGTH(colors))
 		c = colors[id];
 	else
 		c = 0xffffffff;

clients/terminal.c

@@ -95,7 +95,7 @@ init_state_machine(struct utf8_state_machine *machine)
 }
 
 static enum utf8_state
-utf8_next_char(struct utf8_state_machine *machine, char c)
+utf8_next_char(struct utf8_state_machine *machine, unsigned char c)
 {
 	switch(machine->state) {
 	case utf8state_start:
@@ -861,7 +861,7 @@ terminal_send_selection(struct terminal *terminal, int fd)
 struct glyph_run {
 	struct terminal *terminal;
 	cairo_t *cr;
-	int count;
+	unsigned int count;
 	union decoded_attr attr;
 	cairo_glyph_t glyphs[256], *g;
 };
@@ -1864,7 +1864,7 @@ escape_append_utf8(struct terminal *terminal, union utf8_char utf8)
 static void
 terminal_data(struct terminal *terminal, const char *data, size_t length)
 {
-	int i;
+	unsigned int i;
 	union utf8_char utf8;
 	enum utf8_state parser_state;
 

clients/window.c

@@ -166,7 +166,7 @@ struct input {
 	struct wl_input_device *input_device;
 	struct window *pointer_focus;
 	struct window *keyboard_focus;
-	uint32_t current_pointer_image;
+	int current_pointer_image;
 	uint32_t modifiers;
 	int32_t sx, sy;
 	struct wl_list link;

clients/wscreensaver.h

@@ -39,8 +39,8 @@ struct ModeInfo {
 	struct widget *widget;
 
 	int instance_number;
-	unsigned width;
+	int width;
-	unsigned height;
+	int height;
 
 	unsigned long polygon_count;
 	int fps_p;

configure.ac

@@ -170,7 +170,10 @@ AC_ARG_ENABLE(tests,
 AM_CONDITIONAL(BUILD_TESTS, test x$enable_tests = xyes)
 
 if test "x$GCC" = "xyes"; then
-	GCC_CFLAGS="-Wall -g -Wstrict-prototypes -Wmissing-prototypes -fvisibility=hidden"
+	GCC_CFLAGS="-Wall -Wextra -Wstrict-prototypes -Wmissing-prototypes \
+		-Wno-unused-parameter -Wno-missing-field-initializers \
+		-g -fvisibility=hidden"
+
 fi
 AC_SUBST(GCC_CFLAGS)
 

src/compositor-drm.c

@@ -382,7 +382,7 @@ page_flip_handler(int fd, unsigned int frame,
 static int
 drm_surface_format_supported(struct drm_sprite *s, uint32_t format)
 {
-	int i;
+	uint32_t i;
 
 	for (i = 0; i < s->count_formats; i++)
 		if (s->formats[i] == format)
@@ -991,7 +991,7 @@ drm_set_backlight(struct weston_output *output_base, uint32_t value)
 	if (!output->backlight)
 		return;
 
-	if (value < 0 || value > 255)
+	if (value > 255)
 		return;
 
 	max_brightness = backlight_get_max_brightness(output->backlight);
@@ -1182,7 +1182,7 @@ create_sprites(struct drm_compositor *ec)
 	struct drm_sprite *sprite;
 	drmModePlaneRes *plane_res;
 	drmModePlane *plane;
-	int i;
+	uint32_t i;
 
 	plane_res = drmModeGetPlaneResources(ec->drm.fd);
 	if (!plane_res) {
@@ -1249,7 +1249,7 @@ destroy_sprites(struct drm_compositor *compositor)
 }
 
 static int
-create_outputs(struct drm_compositor *ec, int option_connector,
+create_outputs(struct drm_compositor *ec, uint32_t option_connector,
 	       struct udev_device *drm_device)
 {
 	drmModeConnector *connector;

src/compositor-x11.c

@@ -554,7 +554,7 @@ x11_compositor_handle_event(int fd, uint32_t mask, void *data)
 	xcb_focus_in_event_t *focus_in;
 	xcb_atom_t atom;
 	uint32_t *k;
-	int i, set;
+	uint32_t i, set;
 
 	prev = NULL;
 	while (x11_compositor_next_event(c, &event, mask)) {
@@ -740,7 +740,7 @@ x11_compositor_get_resources(struct x11_compositor *c)
 	xcb_intern_atom_reply_t *reply;
 	xcb_pixmap_t pixmap;
 	xcb_gc_t gc;
-	int i;
+	unsigned int i;
 	uint8_t data[] = { 0, 0, 0, 0 };
 
 	for (i = 0; i < ARRAY_LENGTH(atoms); i++)

src/compositor.c

@@ -1276,7 +1276,7 @@ surface_set_input_region(struct wl_client *client,
 	weston_compositor_schedule_repaint(surface->compositor);
 }
 
-const static struct wl_surface_interface surface_interface = {
+static const struct wl_surface_interface surface_interface = {
 	surface_destroy,
 	surface_attach,
 	surface_damage,
@@ -1378,7 +1378,7 @@ compositor_create_region(struct wl_client *client,
 	wl_client_add_resource(client, &region->resource);
 }
 
-const static struct wl_compositor_interface compositor_interface = {
+static const struct wl_compositor_interface compositor_interface = {
 	compositor_create_surface,
 	compositor_create_region
 };
@@ -1904,7 +1904,7 @@ input_device_attach(struct wl_client *client,
 		       0, 0, buffer->width, buffer->height);
 }
 
-const static struct wl_input_device_interface input_device_interface = {
+static const struct wl_input_device_interface input_device_interface = {
 	input_device_attach,
 };
 
@@ -2514,11 +2514,11 @@ int main(int argc, char *argv[])
 	char *socket_name = NULL;
 	char *config_file;
 
-	const const struct config_key shell_config_keys[] = {
+	const struct config_key shell_config_keys[] = {
 		{ "type", CONFIG_KEY_STRING, &shell },
 	};
 
-	const const struct config_section cs[] = {
+	const struct config_section cs[] = {
 		{ "shell",
 		  shell_config_keys, ARRAY_LENGTH(shell_config_keys) },
 	};

src/hash.c

@@ -212,7 +212,7 @@ hash_table_lookup(struct hash_table *ht, uint32_t hash)
 }
 
 static void
-hash_table_rehash(struct hash_table *ht, int new_size_index)
+hash_table_rehash(struct hash_table *ht, unsigned int new_size_index)
 {
 	struct hash_table old_ht;
 	struct hash_entry *table, *entry;

src/shell.c

@@ -1181,7 +1181,7 @@ static void
 surface_opacity_binding(struct wl_input_device *device, uint32_t time,
 	       uint32_t key, uint32_t button, uint32_t axis, int32_t value, void *data)
 {
-	int step = 15;
+	uint32_t step = 15;
 	struct shell_surface *shsurf;
 	struct weston_surface *surface =
 		(struct weston_surface *) device->pointer_focus;

src/xserver-launcher.c

@@ -155,7 +155,8 @@ dump_property(struct weston_wm *wm, xcb_atom_t property,
 	int32_t *incr_value;
 	const char *text_value, *name;
 	xcb_atom_t *atom_value;
-	int i, width, len;
+	int width, len;
+	uint32_t i;
 
 	width = fprintf(stderr, "  %s: ", get_atom_name(wm->conn, property));
 	if (reply == NULL) {
@@ -295,7 +296,7 @@ weston_wm_get_selection_targets(struct weston_wm *wm)
 	xcb_get_property_reply_t *reply;
 	xcb_atom_t *value;
 	char **p;
-	int i;
+	uint32_t i;
 
 	cookie = xcb_get_property(wm->conn,
 				  1, /* delete */
@@ -609,7 +610,7 @@ weston_wm_handle_map_notify(struct weston_wm *wm, xcb_generic_event_t *event)
 	void *p;
 	uint32_t *xid;
 	xcb_atom_t *atom;
-	int i;
+	uint32_t i;
 
 	fprintf(stderr, "XCB_MAP_NOTIFY (window %d)\n", map_notify->window);
 
@@ -668,7 +669,7 @@ weston_wm_handle_map_notify(struct weston_wm *wm, xcb_generic_event_t *event)
 	weston_wm_activate(wm, window, XCB_TIME_CURRENT_TIME);
 }
 
-static const int incr_chunk_size = 64 * 1024;
+static const size_t incr_chunk_size = 64 * 1024;
 
 static void
 weston_wm_send_selection_notify(struct weston_wm *wm, xcb_atom_t property)
@@ -1174,7 +1175,7 @@ wxs_wm_get_resources(struct weston_wm *wm)
 	xcb_xfixes_query_version_reply_t *xfixes_reply;
 	xcb_intern_atom_cookie_t cookies[ARRAY_LENGTH(atoms)];
 	xcb_intern_atom_reply_t *reply;
-	int i;
+	uint32_t i;
 
 	xcb_prefetch_extension_data (wm->conn, &xcb_xfixes_id);