From 3f329b2d0f11ff7b30120bed4be0a0fb94d8d178 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Sun, 13 Feb 2022 11:16:32 +0200
Subject: [PATCH] Don't crash when updating the icon on a `GtkScaleButton` with
 a non-`NULL` empty icon list

---
 gtk/gtkscalebutton.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gtk/gtkscalebutton.c b/gtk/gtkscalebutton.c
index 2012cf49d2..311ea01192 100644
--- a/gtk/gtkscalebutton.c
+++ b/gtk/gtkscalebutton.c
@@ -884,7 +884,7 @@ gtk_scale_button_update_icon (GtkScaleButton *button)
   const char *name;
   guint num_icons;
 
-  if (!priv->icon_list || priv->icon_list[0][0] == '\0')
+  if (!priv->icon_list || !priv->icon_list[0] || priv->icon_list[0][0] == '\0')
     {
       gtk_button_set_icon_name (GTK_BUTTON (priv->button), "image-missing");
       return;
-- 
2.30.2