Add assertion in container_at_view

1 files changed, 3 insertions, 0 deletions

diff --git a/sway/tree/container.c b/sway/tree/container.c
index 76a21c19..62dca487 100644
--- a/sway/tree/container.c
+++ b/sway/tree/container.c
@@ -455,6 +455,9 @@ struct sway_container *container_parent(struct sway_container *container,
 static struct sway_container *container_at_view(struct sway_container *swayc,
                 double ox, double oy,
                 struct wlr_surface **surface, double *sx, double *sy) {
+        if (!sway_assert(swayc->type == C_VIEW, "Expected a view")) {
+                return NULL;
+        }
         struct sway_view *sview = swayc->sway_view;
         double view_sx = ox - sview->x;
         double view_sy = oy - sview->y;