Fix StringName leaks in GDExtension, core, and editor themes

core/core_constants.cpp

@@ -794,6 +794,8 @@ void register_global_constants() {
 
 void unregister_global_constants() {
 	_global_constants.clear();
+	_global_constants_map.clear();
+	_global_enums.clear();
 }
 
 int CoreConstants::get_global_constant_count() {

core/extension/gdextension.cpp

@@ -664,7 +664,7 @@ void GDExtension::_get_library_path(GDExtensionClassLibraryPtr p_library, GDExte
 	memnew_placement(r_path, String(self->library_path));
 }
 
-HashMap<StringName, GDExtensionInterfaceFunctionPtr> gdextension_interface_functions;
+HashMap<StringName, GDExtensionInterfaceFunctionPtr> GDExtension::gdextension_interface_functions;
 
 void GDExtension::register_interface_function(StringName p_function_name, GDExtensionInterfaceFunctionPtr p_function_pointer) {
 	ERR_FAIL_COND_MSG(gdextension_interface_functions.has(p_function_name), "Attempt to register interface function '" + p_function_name + "', which appears to be already registered.");
@@ -836,6 +836,10 @@ void GDExtension::initialize_gdextensions() {
 	register_interface_function("get_library_path", (GDExtensionInterfaceFunctionPtr)&GDExtension::_get_library_path);
 }
 
+void GDExtension::finalize_gdextensions() {
+	gdextension_interface_functions.clear();
+}
+
 Error GDExtensionResourceLoader::load_gdextension_resource(const String &p_path, Ref<GDExtension> &p_extension) {
 	ERR_FAIL_COND_V_MSG(p_extension.is_valid() && p_extension->is_library_open(), ERR_ALREADY_IN_USE, "Cannot load GDExtension resource into already opened library.");
 

core/extension/gdextension.h

@@ -106,6 +106,8 @@ class GDExtension : public Resource {
 	void clear_instance_bindings();
 #endif
 
+	static HashMap<StringName, GDExtensionInterfaceFunctionPtr> gdextension_interface_functions;
+
 protected:
 	static void _bind_methods();
 
@@ -153,6 +155,7 @@ public:
 	static void register_interface_function(StringName p_function_name, GDExtensionInterfaceFunctionPtr p_function_pointer);
 	static GDExtensionInterfaceFunctionPtr get_interface_function(StringName p_function_name);
 	static void initialize_gdextensions();
+	static void finalize_gdextensions();
 
 	GDExtension();
 	~GDExtension();

core/extension/gdextension_compat_hashes.cpp

@@ -840,4 +840,8 @@ void GDExtensionCompatHashes::initialize() {
 	// clang-format on
 }
 
+void GDExtensionCompatHashes::finalize() {
+	mappings.clear();
+}
+
 #endif // DISABLE_DEPRECATED

core/extension/gdextension_compat_hashes.h

@@ -48,6 +48,7 @@ class GDExtensionCompatHashes {
 
 public:
 	static void initialize();
+	static void finalize();
 	static bool lookup_current_hash(const StringName &p_class, const StringName &p_method, uint32_t p_legacy_hash, uint32_t *r_current_hash);
 	static bool get_legacy_hashes(const StringName &p_class, const StringName &p_method, Array &r_hashes);
 };

core/extension/gdextension_manager.cpp

@@ -293,3 +293,9 @@ GDExtensionManager::GDExtensionManager() {
 	GDExtensionCompatHashes::initialize();
 #endif
 }
+
+GDExtensionManager::~GDExtensionManager() {
+#ifndef DISABLE_DEPRECATED
+	GDExtensionCompatHashes::finalize();
+#endif
+}

core/extension/gdextension_manager.h

@@ -86,6 +86,7 @@ public:
 	void reload_extensions();
 
 	GDExtensionManager();
+	~GDExtensionManager();
 };
 
 VARIANT_ENUM_CAST(GDExtensionManager::LoadStatus)

core/register_core_types.cpp

@@ -360,6 +360,7 @@ void unregister_core_extensions() {
 	if (_is_core_extensions_registered) {
 		gdextension_manager->deinitialize_extensions(GDExtension::INITIALIZATION_LEVEL_CORE);
 	}
+	GDExtension::finalize_gdextensions();
 }
 
 void unregister_core_types() {

editor/editor_node.cpp

@@ -6951,6 +6951,7 @@ EditorNode::EditorNode() {
 
 	// Exporters might need the theme.
 	EditorColorMap::create();
+	EditorTheme::initialize();
 	theme = create_custom_theme();
 	DisplayServer::set_early_window_clear_color_override(true, theme->get_color(SNAME("background"), EditorStringName(Editor)));
 
@@ -8038,6 +8039,8 @@ EditorNode::~EditorNode() {
 	memdelete(progress_hb);
 
 	EditorSettings::destroy();
+	EditorColorMap::finish();
+	EditorTheme::finalize();
 
 	GDExtensionEditorPlugins::editor_node_add_plugin = nullptr;
 	GDExtensionEditorPlugins::editor_node_remove_plugin = nullptr;

editor/editor_themes.cpp

@@ -55,7 +55,7 @@ void EditorColorMap::add_conversion_color_pair(const String p_from_color, const
 	color_conversion_map[Color::html(p_from_color)] = Color::html(p_to_color);
 }
 
-void EditorColorMap::add_conversion_exception(const StringName p_icon_name) {
+void EditorColorMap::add_conversion_exception(const StringName &p_icon_name) {
 	color_conversion_exceptions.insert(p_icon_name);
 }
 
@@ -215,6 +215,11 @@ void EditorColorMap::create() {
 	add_conversion_exception("Breakpoint");
 }
 
+void EditorColorMap::finish() {
+	color_conversion_map.clear();
+	color_conversion_exceptions.clear();
+}
+
 Vector<StringName> EditorTheme::editor_theme_types;
 
 // TODO: Refactor these and corresponding Theme methods to use the bool get_xxx(r_value) pattern internally.
@@ -301,13 +306,15 @@ Ref<StyleBox> EditorTheme::get_stylebox(const StringName &p_name, const StringNa
 	}
 }
 
-EditorTheme::EditorTheme() {
-	if (editor_theme_types.is_empty()) {
+void EditorTheme::initialize() {
 	editor_theme_types.append(EditorStringName(Editor));
 	editor_theme_types.append(EditorStringName(EditorFonts));
 	editor_theme_types.append(EditorStringName(EditorIcons));
 	editor_theme_types.append(EditorStringName(EditorStyles));
 }
+
+void EditorTheme::finalize() {
+	editor_theme_types.clear();
 }
 
 // Editor theme generatior.

editor/editor_themes.h

@@ -45,12 +45,14 @@ class EditorColorMap {
 	static HashSet<StringName> color_conversion_exceptions;
 
 public:
-	static void create();
 	static void add_conversion_color_pair(const String p_from_color, const String p_to_color);
-	static void add_conversion_exception(const StringName p_icon_name);
+	static void add_conversion_exception(const StringName &p_icon_name);
 
 	static HashMap<Color, Color> &get_color_conversion_map() { return color_conversion_map; };
 	static HashSet<StringName> &get_color_conversion_exceptions() { return color_conversion_exceptions; };
+
+	static void create();
+	static void finish();
 };
 
 class EditorTheme : public Theme {
@@ -66,7 +68,8 @@ public:
 	virtual Ref<Texture2D> get_icon(const StringName &p_name, const StringName &p_theme_type) const override;
 	virtual Ref<StyleBox> get_stylebox(const StringName &p_name, const StringName &p_theme_type) const override;
 
-	EditorTheme();
+	static void initialize();
+	static void finalize();
 };
 
 Ref<Theme> create_editor_theme(Ref<Theme> p_theme = nullptr);

editor/project_manager.cpp

@@ -2845,6 +2845,7 @@ ProjectManager::ProjectManager() {
 	}
 
 	EditorColorMap::create();
+	EditorTheme::initialize();
 	Ref<Theme> theme = create_custom_theme();
 	DisplayServer::set_early_window_clear_color_override(true, theme->get_color(SNAME("background"), EditorStringName(Editor)));
 
@@ -3297,6 +3298,9 @@ ProjectManager::~ProjectManager() {
 	if (EditorSettings::get_singleton()) {
 		EditorSettings::destroy();
 	}
+
+	EditorColorMap::finish();
+	EditorTheme::finalize();
 }
 
 void ProjectTag::_notification(int p_what) {