From: Sebastian Dröge <sebastian@centricular.com>
Date: Sun, 13 Feb 2022 09:16:32 +0000 (+0200)
Subject: Don't crash when updating the icon on a `GtkScaleButton` with a non-`NULL` empty... 
X-Git-Tag: archive/raspbian/4.6.5+ds-1+rpi1~1^2~19^2~3^2~75^2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=3f329b2d0f11ff7b30120bed4be0a0fb94d8d178;p=gtk4.git

Don't crash when updating the icon on a `GtkScaleButton` with a non-`NULL` empty icon list
---

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;