Fix 'gcc -Wextra -Wno-unused-parameter'.

i3bar/include/config.h

@@ -17,6 +17,9 @@ typedef enum {
     POS_BOT
 } position_t;
 
+/* Bar display mode (hide unless modifier is pressed or show in dock mode or always hide in invisible mode) */
+typedef enum { M_DOCK = 0, M_HIDE = 1, M_INVISIBLE = 2 } bar_display_mode_t;
+
 typedef struct config_t {
     int          modifier;
     position_t   position;
@@ -31,8 +34,7 @@ typedef struct config_t {
     int          num_outputs;
     char         **outputs;
 
-    /* Bar display mode (hide unless modifier is pressed or show in dock mode or always hide in invisible mode) */
-    enum { M_DOCK = 0, M_HIDE = 1, M_INVISIBLE = 2 } hide_on_modifier;
+    bar_display_mode_t hide_on_modifier;
 
     /* The current hidden_state of the bar, which indicates whether it is hidden or shown */
     enum { S_HIDE = 0, S_SHOW = 1 } hidden_state;

i3bar/src/child.c

@@ -28,7 +28,7 @@
 #include "common.h"
 
 /* Global variables for child_*() */
-i3bar_child child = {};
+i3bar_child child;
 
 /* stdin- and sigchild-watchers */
 ev_io    *stdin_io;

i3bar/src/ipc.c

@@ -161,7 +161,7 @@ void got_bar_config_update(char *event) {
 
     /* update the configuration with the received settings */
     DLOG("Received bar config update \"%s\"\n", event);
-    int old_mode = config.hide_on_modifier;
+    bar_display_mode_t old_mode = config.hide_on_modifier;
     parse_config_json(event);
     if (old_mode != config.hide_on_modifier) {
         reconfig_windows(true);

i3bar/src/xcb.c

@@ -1524,7 +1524,9 @@ void reconfig_windows(bool redraw_bars) {
                 uint32_t top_end_x;
                 uint32_t bottom_start_x;
                 uint32_t bottom_end_x;
-            } __attribute__((__packed__)) strut_partial = {};
+            } __attribute__((__packed__)) strut_partial;
+            memset(&strut_partial, 0, sizeof(strut_partial));
+
             switch (config.position) {
                 case POS_NONE:
                     break;