From 1c368fbb5fcd8fb67040bcc12bd71c7fbf119e97 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Filip=20Szczepa=C5=84ski?= <jazz2rulez@gmail.com>
Date: Mon, 12 Sep 2022 22:53:09 +0100
Subject: [PATCH] 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.
---
 sway/xdg_activation_v1.c | 3 +++
 1 file changed, 3 insertions(+)

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;