swaybar: when scrolling, check that there are workspaces to scroll on

1 files changed, 4 insertions, 0 deletions

diff --git a/swaybar/input.c b/swaybar/input.c
index 4aefc6d6..263d0253 100644
--- a/swaybar/input.c
+++ b/swaybar/input.c
@@ -180,6 +180,10 @@ static void wl_pointer_axis(void *data, struct wl_pointer *wl_pointer,
                 return;
         }
 
+        if (!sway_assert(!wl_list_empty(&output->workspaces), "axis with no workspaces")) {
+                return;
+        }
+
         struct swaybar_workspace *first =
                 wl_container_of(output->workspaces.next, first, link);
         struct swaybar_workspace *last =