swaybar: handle wayland-cursor failures

Updating the cursor is not essential, so this change prints
a warning when wl_cursor_theme_load or wl_cursor_theme_get_cursor
fail instead of crashing or exiting.

1 files changed, 8 insertions, 0 deletions

diff --git a/swaybar/input.c b/swaybar/input.c
index 358c69cb..1e6ace00 100644
--- a/swaybar/input.c
+++ b/swaybar/input.c
@@ -81,8 +81,16 @@ void update_cursor(struct swaybar_seat *seat) {
         int scale = pointer->current ? pointer->current->scale : 1;
         pointer->cursor_theme = wl_cursor_theme_load(
                 cursor_theme, cursor_size * scale, seat->bar->shm);
+        if (!pointer->cursor_theme) {
+                sway_log(SWAY_ERROR, "Failed to load cursor theme");
+                return;
+        }
         struct wl_cursor *cursor;
         cursor = wl_cursor_theme_get_cursor(pointer->cursor_theme, "default");
+        if (!cursor) {
+                sway_log(SWAY_ERROR, "Failed to get default cursor from theme");
+                return;
+        }
         pointer->cursor_image = cursor->images[0];
         wl_surface_set_buffer_scale(pointer->cursor_surface, scale);
         wl_surface_attach(pointer->cursor_surface,