Resolve warnings caused by -Wextra

callbacks.c

@@ -11,7 +11,7 @@
 #include "utils.h"
 
 gboolean
-cb_destroy(GtkWidget* widget, gpointer data)
+cb_destroy(GtkWidget* UNUSED(widget), gpointer UNUSED(data))
 {
   return TRUE;
 }
@@ -78,7 +78,7 @@ cb_view_vadjustment_value_changed(GtkAdjustment *adjustment, gpointer data)
 }
 
 void
-cb_pages_per_row_value_changed(girara_session_t* session, girara_setting_t* setting)
+cb_pages_per_row_value_changed(girara_session_t* UNUSED(session), girara_setting_t* setting)
 {
   int pages_per_row = setting->value.i;
   zathura_t* zathura = setting->data;

commands.c

@@ -8,7 +8,8 @@
 #include "document.h"
 
 bool
-cmd_bookmark_create(girara_session_t* session, girara_list_t* argument_list)
+cmd_bookmark_create(girara_session_t* UNUSED(session), girara_list_t*
+    UNUSED(argument_list))
 {
   return true;
 }
@@ -41,13 +42,14 @@ cmd_bookmark_delete(girara_session_t* session, girara_list_t* argument_list)
 }
 
 bool
-cmd_bookmark_open(girara_session_t* session, girara_list_t* argument_list)
+cmd_bookmark_open(girara_session_t* UNUSED(session), girara_list_t*
+    UNUSED(argument_list))
 {
   return true;
 }
 
 bool
-cmd_close(girara_session_t* session, girara_list_t* argument_list)
+cmd_close(girara_session_t* session, girara_list_t* UNUSED(argument_list))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -63,13 +65,15 @@ cmd_close(girara_session_t* session, girara_list_t* argument_list)
 }
 
 bool
-cmd_info(girara_session_t* session, girara_list_t* argument_list)
+cmd_info(girara_session_t* UNUSED(session), girara_list_t*
+    UNUSED(argument_list))
 {
   return true;
 }
 
 bool
-cmd_help(girara_session_t* session, girara_list_t* argument_list)
+cmd_help(girara_session_t* UNUSED(session), girara_list_t*
+    UNUSED(argument_list))
 {
   return true;
 }
@@ -102,7 +106,7 @@ cmd_open(girara_session_t* session, girara_list_t* argument_list)
 }
 
 bool
-cmd_print(girara_session_t* session, girara_list_t* argument_list)
+cmd_print(girara_session_t* session, girara_list_t* UNUSED(argument_list))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);

config.mk

@@ -25,7 +25,7 @@ INCS = ${GIRARA_INC} ${GTK_INC} $(SQLITE_INC)
 LIBS = ${GIRARA_LIB} ${GTK_LIB} $(SQLITE_LIB) -lpthread -lm
 
 # flags
-CFLAGS += -std=c99 -pedantic -Wall -Wno-format-zero-length $(INCS)
+CFLAGS += -std=c99 -pedantic -Wall -Wno-format-zero-length -Wextra $(INCS)
 
 # debug
 DFLAGS = -g

document.c

@@ -376,7 +376,7 @@ zathura_document_attachments_get(zathura_document_t* document)
 }
 
 bool
-zathura_document_attachments_free(zathura_list_t* list)
+zathura_document_attachments_free(zathura_list_t* UNUSED(list))
 {
   return false;
 }
@@ -461,7 +461,7 @@ zathura_page_links_get(zathura_page_t* page)
 }
 
 bool
-zathura_page_links_free(zathura_list_t* list)
+zathura_page_links_free(zathura_list_t* UNUSED(list))
 {
   return false;
 }
@@ -482,7 +482,7 @@ zathura_page_form_fields_get(zathura_page_t* page)
 }
 
 bool
-zathura_page_form_fields_free(zathura_list_t* list)
+zathura_page_form_fields_free(zathura_list_t* UNUSED(list))
 {
   return false;
 }

print.c

@@ -41,13 +41,15 @@ print(zathura_t* zathura)
 }
 
 void
-cb_print_begin(GtkPrintOperation* print_operation, GtkPrintContext* context, zathura_t* zathura)
+cb_print_begin(GtkPrintOperation* UNUSED(print_operation), GtkPrintContext*
+    UNUSED(context), zathura_t* UNUSED(zathura))
 {
 
 }
 
 void
-cb_print_draw_page(GtkPrintOperation* print_operation, GtkPrintContext* context, gint page_number, zathura_t* zathura)
+cb_print_draw_page(GtkPrintOperation* UNUSED(print_operation), GtkPrintContext*
+    context, gint page_number, zathura_t* zathura)
 {
   cairo_t* cairo = gtk_print_context_get_cairo_context(context);
 

render.c

@@ -279,7 +279,8 @@ render_all(zathura_t* zathura)
 }
 
 gboolean
-page_expose_event(GtkWidget* widget, GdkEventExpose* event, gpointer data)
+page_expose_event(GtkWidget* UNUSED(widget), GdkEventExpose* UNUSED(event),
+    gpointer data)
 {
   zathura_page_t* page = data;
   if (page == NULL) {

shortcuts.c

@@ -11,7 +11,8 @@
 #include "utils.h"
 
 bool
-sc_abort(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_abort(girara_session_t* session, girara_argument_t* UNUSED(argument),
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -21,7 +22,8 @@ sc_abort(girara_session_t* session, girara_argument_t* argument, unsigned int t)
 }
 
 bool
-sc_adjust_window(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_adjust_window(girara_session_t* session, girara_argument_t* UNUSED(argument),
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -29,7 +31,8 @@ sc_adjust_window(girara_session_t* session, girara_argument_t* argument, unsigne
 }
 
 bool
-sc_change_mode(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_change_mode(girara_session_t* session, girara_argument_t* argument, unsigned
+    int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -39,7 +42,8 @@ sc_change_mode(girara_session_t* session, girara_argument_t* argument, unsigned
 }
 
 bool
-sc_focus_inputbar(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_focus_inputbar(girara_session_t* session, girara_argument_t* argument,
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -61,7 +65,8 @@ sc_focus_inputbar(girara_session_t* session, girara_argument_t* argument, unsign
 }
 
 bool
-sc_follow(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_follow(girara_session_t* session, girara_argument_t* UNUSED(argument),
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -97,7 +102,8 @@ sc_goto(girara_session_t* session, girara_argument_t* argument, unsigned int t)
 }
 
 bool
-sc_navigate(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_navigate(girara_session_t* session, girara_argument_t* argument, unsigned int
+    UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -120,7 +126,8 @@ sc_navigate(girara_session_t* session, girara_argument_t* argument, unsigned int
 }
 
 bool
-sc_recolor(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_recolor(girara_session_t* session, girara_argument_t* UNUSED(argument),
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -133,7 +140,8 @@ sc_recolor(girara_session_t* session, girara_argument_t* argument, unsigned int
 }
 
 bool
-sc_reload(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_reload(girara_session_t* session, girara_argument_t* UNUSED(argument),
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -141,7 +149,8 @@ sc_reload(girara_session_t* session, girara_argument_t* argument, unsigned int t
 }
 
 bool
-sc_rotate(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_rotate(girara_session_t* session, girara_argument_t* UNUSED(argument),
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -158,7 +167,8 @@ sc_rotate(girara_session_t* session, girara_argument_t* argument, unsigned int t
 }
 
 bool
-sc_scroll(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_scroll(girara_session_t* session, girara_argument_t* argument, unsigned int
+    UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -218,7 +228,8 @@ sc_scroll(girara_session_t* session, girara_argument_t* argument, unsigned int t
 }
 
 bool
-sc_search(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_search(girara_session_t* session, girara_argument_t* argument, unsigned int
+    UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -230,7 +241,8 @@ sc_search(girara_session_t* session, girara_argument_t* argument, unsigned int t
 }
 
 bool
-sc_navigate_index(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_navigate_index(girara_session_t* session, girara_argument_t* argument,
+    unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -242,7 +254,8 @@ sc_navigate_index(girara_session_t* session, girara_argument_t* argument, unsign
 }
 
 bool
-sc_toggle_index(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_toggle_index(girara_session_t* session, girara_argument_t* argument, unsigned
+    int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);
@@ -332,7 +345,8 @@ error_ret:
 }
 
 bool
-sc_toggle_fullscreen(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_toggle_fullscreen(girara_session_t* session, girara_argument_t*
+    UNUSED(argument), unsigned int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -350,7 +364,8 @@ sc_toggle_fullscreen(girara_session_t* session, girara_argument_t* argument, uns
 }
 
 bool
-sc_quit(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_quit(girara_session_t* session, girara_argument_t* UNUSED(argument), unsigned
+    int UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
 
@@ -365,7 +380,8 @@ sc_quit(girara_session_t* session, girara_argument_t* argument, unsigned int t)
 }
 
 bool
-sc_zoom(girara_session_t* session, girara_argument_t* argument, unsigned int t)
+sc_zoom(girara_session_t* session, girara_argument_t* argument, unsigned int
+    UNUSED(t))
 {
   g_return_val_if_fail(session != NULL, false);
   g_return_val_if_fail(session->global.data != NULL, false);

utils.c

@@ -154,7 +154,8 @@ execute_command(char* const argv[], char** output)
 }
 
 void
-document_index_build(GtkTreeModel* model, GtkTreeIter* parent, girara_tree_node_t* tree)
+document_index_build(GtkTreeModel* UNUSED(model), GtkTreeIter* UNUSED(parent),
+    girara_tree_node_t* UNUSED(tree))
 {
   /*girara_list_t* list        = girara_node_get_children(tree);*/
   /*girara_list_iterator_t* it = girara_list_iterator(list);*/

zathura.c

@@ -36,7 +36,7 @@ zathura_init(int argc, char* argv[])
     { "config-dir",  'c', 0, G_OPTION_ARG_FILENAME, &config_dir,  "Path to the config directory",               "path" },
     { "data-dir",    'd', 0, G_OPTION_ARG_FILENAME, &data_dir,    "Path to the data directory",                 "path" },
     { "plugins-dir", 'p', 0, G_OPTION_ARG_STRING,   &plugin_path, "Path to the directories containing plugins", "path" },
-    { NULL }
+    { NULL, '\0', 0, 0, NULL, NULL, NULL }
   };
 
   GOptionContext* context = g_option_context_new(" [file] [password]");
@@ -315,7 +315,7 @@ document_open(zathura_t* zathura, const char* path, const char* password)
   }
 
   /* create blank pages */
-  for (int page_id = 0; page_id < document->number_of_pages; page_id++) {
+  for (unsigned int page_id = 0; page_id < document->number_of_pages; page_id++) {
     zathura_page_t* page = document->pages[page_id];
     gtk_widget_realize(page->event_box);
   }

zathura.h

@@ -6,6 +6,15 @@
 #include <stdbool.h>
 #include <girara.h>
 
+#ifdef UNUSED
+#elif defined(__GNUC__)
+# define UNUSED(x) UNUSED_ ## x __attribute__((unused))
+#elif defined(__LCINT__)
+# define UNUSED(x) /*@unused@*/ x
+#else
+# define UNUSED(x) x
+#endif
+
 enum { NEXT, PREVIOUS, LEFT, RIGHT, UP, DOWN, BOTTOM, TOP, HIDE, HIGHLIGHT,
   DELETE_LAST_WORD, DELETE_LAST_CHAR, DEFAULT, ERROR, WARNING, NEXT_GROUP,
   PREVIOUS_GROUP, ZOOM_IN, ZOOM_OUT, ZOOM_ORIGINAL, ZOOM_SPECIFIC, FORWARD,