https://bugs.gentoo.org/919197
https://gitlab.gnome.org/GNOME/gdl/-/issues/9
https://salsa.debian.org/rnpalmer-guest/gdl/-/raw/fix1074981/debian/patches/gcc-14-compat-1074981.patch?ref_type=heads

From: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Date: Fri, 6 Dec 2024 20:04:45 +0000
Subject: Allow building with gcc-14

object_class and dock_object_class are the same pointer cast
to different types, so either should work but only dock_object_class
passes gcc-14 type checking.

Closes: #1074981
--- a/gdl/gdl-dock-bar.c
+++ b/gdl/gdl-dock-bar.c
@@ -425,7 +425,7 @@ gdl_dock_bar_set_master (GdlDockBar    *dockbar,
         if (GDL_IS_DOCK_OBJECT (master)) {
             master = gdl_dock_object_get_master (GDL_DOCK_OBJECT (master));
         }
-        dockbar->priv->master = g_object_ref (master);
+        dockbar->priv->master = GDL_DOCK_MASTER (g_object_ref (master));
         dockbar->priv->layout_changed_id =
             g_signal_connect (dockbar->priv->master, "layout-changed",
                               (GCallback) gdl_dock_bar_layout_changed_cb,
--- a/gdl/gdl-dock-item.c
+++ b/gdl/gdl-dock-item.c
@@ -355,7 +355,7 @@ gdl_dock_item_class_init (GdlDockItemClass *klass)
     container_class->set_focus_child = gdl_dock_item_set_focus_child;
     gtk_container_class_handle_border_width (container_class);
 
-    gdl_dock_object_class_set_is_compound (object_class, FALSE);
+    gdl_dock_object_class_set_is_compound (dock_object_class, FALSE);
     dock_object_class->dock_request = gdl_dock_item_dock_request;
     dock_object_class->dock = gdl_dock_item_dock;
     dock_object_class->present = gdl_dock_item_present;
@@ -744,7 +744,7 @@ gdl_dock_item_set_property  (GObject      *g_object,
         case PROP_RESIZE:
             item->priv->resize = g_value_get_boolean (value);
             {
-                GObject * parent = gtk_widget_get_parent (GTK_WIDGET (item));
+                GtkWidget * parent = gtk_widget_get_parent (GTK_WIDGET (item));
                 //if we docked update "resize" child_property of our parent
                 if(parent)
                 {
--- a/gdl/gdl-dock-layout.c
+++ b/gdl/gdl-dock-layout.c
@@ -620,7 +620,7 @@ gdl_dock_layout_set_master (GdlDockLayout *layout,
         if (GDL_IS_DOCK_OBJECT (master)) {
             master = gdl_dock_object_get_master (GDL_DOCK_OBJECT (master));
         }
-        layout->priv->master = g_object_ref (master);
+        layout->priv->master = GDL_DOCK_MASTER (g_object_ref (master));
         layout->priv->layout_changed_id =
             g_signal_connect (layout->priv->master, "layout-changed",
                               (GCallback) gdl_dock_layout_layout_changed_cb,