From 354ceb57781b7906c1c7d3adbc0c3439ae8b51d6 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Marco=20Trevisan=20=28Trevi=C3=B1o=29?= <mail@3v1n0.net>
Date: Fri, 24 Mar 2023 03:29:53 +0100
Subject: [PATCH] gtkwidget: Do a type-check in gtk_widget_in_destruction()

Given it can be called during a widget destruction, it's safer to do a
type-check before crashing.

See: https://gitlab.gnome.org/GNOME/gnome-control-center/-/merge_requests/1727
---
 gtk/gtkwidget.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 123bf17745..2f510650a0 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -10635,7 +10635,11 @@ gtk_widget_set_has_focus (GtkWidget *widget,
 gboolean
 gtk_widget_in_destruction (GtkWidget *widget)
 {
-  GtkWidgetPrivate *priv = gtk_widget_get_instance_private (widget);
+  GtkWidgetPrivate *priv;
+
+  g_return_val_if_fail (GTK_IS_WIDGET (widget), FALSE);
+
+  priv = gtk_widget_get_instance_private (widget);
 
   return priv->in_destruction;
 }
-- 
2.30.2