From: Georges Basile Stavracas Neto <georges.stavracas@gmail.com>
Date: Tue, 9 Aug 2022 17:20:25 +0000 (-0300)
Subject: paned: Warn if child is not actually a child
X-Git-Tag: archive/raspbian/4.8.3+ds-2+rpi1~3^2~20^2~4^2~6^2
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=29580d425203afb93b54a7757f877eef04d4aebd;p=gtk4.git

paned: Warn if child is not actually a child

This will at least allow us to debug this in the future.
---

diff --git a/gtk/gtkpaned.c b/gtk/gtkpaned.c
index a3cb71081a..4dde590724 100644
--- a/gtk/gtkpaned.c
+++ b/gtk/gtkpaned.c
@@ -1977,6 +1977,15 @@ gtk_paned_set_focus_child (GtkWidget *widget,
             if (GTK_IS_PANED (w))
               last_focus = w;
 
+          if (w == NULL)
+            {
+              g_warning ("Error finding last focus widget of GtkPaned %p, "
+                         "gtk_paned_set_focus_child was called on widget %p "
+                         "which is not child of %p.",
+                         widget, child, widget);
+              return;
+            }
+
           focus_child = gtk_widget_get_focus_child (widget);
           if (focus_child == paned->start_child)
             gtk_paned_set_last_start_child_focus (paned, last_focus);