From 640b8634d0061f5c489c05246c36eeb98696d24d Mon Sep 17 00:00:00 2001
From: Jehan <jehan@girinstud.io>
Date: Wed, 11 Dec 2024 15:43:09 +0100
Subject: [PATCH] gdk: fix crash on Wayland with already destroyed surface.

See crash reliably reproduced on GIMP when a popup is destroyed on a
drag-begin callback and Wayland data listener callbacks calls the
enter() callback with a NULL surface.

Cf. https://gitlab.gnome.org/GNOME/gimp/-/issues/10515
---
 gdk/wayland/gdkseat-wayland.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gdk/wayland/gdkseat-wayland.c b/gdk/wayland/gdkseat-wayland.c
index 7ce5ddfb01f..a799ac7369f 100644
--- a/gdk/wayland/gdkseat-wayland.c
+++ b/gdk/wayland/gdkseat-wayland.c
@@ -346,6 +346,9 @@ data_device_enter (void                  *data,
   GdkContentFormats *formats;
   GdkDevice *device;
 
+  if (!surface)
+    return;
+
   dest_surface = wl_surface_get_user_data (surface);
 
   if (!GDK_IS_SURFACE (dest_surface))
-- 
GitLab