Fix crash in xdg_activation_v1.c

wlr_xdg_surface_from_wlr_surface() can return a NULL pointer, so check for NULL before dereferencing it.

1 files changed, 3 insertions, 0 deletions

diff --git a/sway/xdg_activation_v1.c b/sway/xdg_activation_v1.c
index 6c70c785..99e7f9b5 100644
--- a/sway/xdg_activation_v1.c
+++ b/sway/xdg_activation_v1.c
@@ -11,6 +11,9 @@ void xdg_activation_v1_handle_request_activate(struct wl_listener *listener,
 
         struct wlr_xdg_surface *xdg_surface =
                 wlr_xdg_surface_from_wlr_surface(event->surface);
+        if (xdg_surface == NULL) {
+                return;
+        }
         struct sway_view *view = xdg_surface->data;
         if (!xdg_surface->mapped || view == NULL) {
                 return;