Zero initialize all pointer class and struct members

This prevents the pitfall of UB when checking if they have been
assigned something valid by comparing to nullptr.

modules/csg/csg_shape.h

@@ -368,7 +368,7 @@ private:
 	PathRotation path_rotation;
 	bool path_local;
 
-	Path3D *path;
+	Path3D *path = nullptr;
 
 	bool smooth_faces;
 	bool path_continuous_u;

modules/gdscript/gdscript.h

@@ -265,7 +265,7 @@ class GDScriptInstance : public ScriptInstance {
 	friend struct GDScriptUtilityFunctionsDefinitions;
 
 	ObjectID owner_id;
-	Object *owner;
+	Object *owner = nullptr;
 	Ref<GDScript> script;
 #ifdef DEBUG_ENABLED
 	Map<StringName, int> member_indices_cache; //used only for hot script reloading
@@ -311,17 +311,17 @@ class GDScriptLanguage : public ScriptLanguage {
 
 	static GDScriptLanguage *singleton;
 
-	Variant *_global_array;
+	Variant *_global_array = nullptr;
 	Vector<Variant> global_array;
 	Map<StringName, int> globals;
 	Map<StringName, Variant> named_globals;
 
 	struct CallLevel {
-		Variant *stack;
-		GDScriptFunction *function;
-		GDScriptInstance *instance;
-		int *ip;
-		int *line;
+		Variant *stack = nullptr;
+		GDScriptFunction *function = nullptr;
+		GDScriptInstance *instance = nullptr;
+		int *ip = nullptr;
+		int *line = nullptr;
 	};
 
 	int _debug_parse_err_line;
@@ -329,7 +329,7 @@ class GDScriptLanguage : public ScriptLanguage {
 	String _debug_error;
 	int _debug_call_stack_pos;
 	int _debug_max_call_stack;
-	CallLevel *_call_stack;
+	CallLevel *_call_stack = nullptr;
 
 	void _add_global(const StringName &p_name, const Variant &p_value);
 

modules/gdscript/language_server/gdscript_text_document.h

@@ -40,7 +40,7 @@ class GDScriptTextDocument : public RefCounted {
 protected:
 	static void _bind_methods();
 
-	FileAccess *file_checker;
+	FileAccess *file_checker = nullptr;
 
 	void didOpen(const Variant &p_param);
 	void didClose(const Variant &p_param);

modules/gdscript/tests/gdscript_test_runner.h

@@ -63,8 +63,8 @@ public:
 
 private:
 	struct ErrorHandlerData {
-		TestResult *result;
-		GDScriptTest *self;
+		TestResult *result = nullptr;
+		GDScriptTest *self = nullptr;
 		ErrorHandlerData(TestResult *p_result, GDScriptTest *p_this) {
 			result = p_result;
 			self = p_this;

modules/gridmap/editor/grid_map_editor_plugin.h

@@ -62,21 +62,21 @@ class GridMapEditor : public VBoxContainer {
 		DISPLAY_LIST
 	};
 
-	UndoRedo *undo_redo;
+	UndoRedo *undo_redo = nullptr;
 	InputAction input_action = INPUT_NONE;
-	Panel *panel;
-	MenuButton *options;
-	SpinBox *floor;
+	Panel *panel = nullptr;
+	MenuButton *options = nullptr;
+	SpinBox *floor = nullptr;
 	double accumulated_floor_delta = 0.0;
-	Button *mode_thumbnail;
-	Button *mode_list;
-	LineEdit *search_box;
-	HSlider *size_slider;
-	HBoxContainer *spatial_editor_hb;
-	ConfirmationDialog *settings_dialog;
-	VBoxContainer *settings_vbc;
-	SpinBox *settings_pick_distance;
-	Label *spin_box_label;
+	Button *mode_thumbnail = nullptr;
+	Button *mode_list = nullptr;
+	LineEdit *search_box = nullptr;
+	HSlider *size_slider = nullptr;
+	HBoxContainer *spatial_editor_hb = nullptr;
+	ConfirmationDialog *settings_dialog = nullptr;
+	VBoxContainer *settings_vbc = nullptr;
+	SpinBox *settings_pick_distance = nullptr;
+	Label *spin_box_label = nullptr;
 
 	struct SetItem {
 		Vector3i position;
@@ -89,7 +89,7 @@ class GridMapEditor : public VBoxContainer {
 	List<SetItem> set_items;
 
 	GridMap *node = nullptr;
-	MeshLibrary *last_mesh_library;
+	MeshLibrary *last_mesh_library = nullptr;
 
 	Transform3D grid_xform;
 	Transform3D edit_grid_xform;
@@ -173,15 +173,15 @@ class GridMapEditor : public VBoxContainer {
 
 	};
 
-	Node3DEditorPlugin *spatial_editor;
+	Node3DEditorPlugin *spatial_editor = nullptr;
 
 	struct AreaDisplay {
 		RID mesh;
 		RID instance;
 	};
 
-	ItemList *mesh_library_palette;
-	Label *info_message;
+	ItemList *mesh_library_palette = nullptr;
+	Label *info_message = nullptr;
 
 	void update_grid(); // Change which and where the grid is displayed
 	void _draw_grids(const Vector3 &cell_size);
@@ -234,7 +234,7 @@ public:
 class GridMapEditorPlugin : public EditorPlugin {
 	GDCLASS(GridMapEditorPlugin, EditorPlugin);
 
-	GridMapEditor *grid_map_editor;
+	GridMapEditor *grid_map_editor = nullptr;
 
 protected:
 	void _notification(int p_what);

modules/mono/glue/arguments_vector.h

@@ -37,7 +37,7 @@ template <typename T, int POOL_SIZE = 5>
 struct ArgumentsVector {
 private:
 	T pool[POOL_SIZE];
-	T *_ptr;
+	T *_ptr = nullptr;
 	int size;
 
 	ArgumentsVector() = delete;

modules/mono/managed_callable.h

@@ -43,7 +43,7 @@
 class ManagedCallable : public CallableCustom {
 	friend class CSharpLanguage;
 	MonoGCHandleData delegate_handle;
-	GDMonoMethod *delegate_invoke;
+	GDMonoMethod *delegate_invoke = nullptr;
 
 #ifdef GD_MONO_HOT_RELOAD
 	SelfList<ManagedCallable> self_instance = this;

modules/mono/mono_gd/gd_mono.h

@@ -94,16 +94,16 @@ private:
 
 	UnhandledExceptionPolicy unhandled_exception_policy;
 
-	MonoDomain *root_domain;
-	MonoDomain *scripts_domain;
+	MonoDomain *root_domain = nullptr;
+	MonoDomain *scripts_domain = nullptr;
 
 	HashMap<int32_t, HashMap<String, GDMonoAssembly *>> assemblies;
 
-	GDMonoAssembly *corlib_assembly;
-	GDMonoAssembly *project_assembly;
+	GDMonoAssembly *corlib_assembly = nullptr;
+	GDMonoAssembly *project_assembly = nullptr;
 #ifdef TOOLS_ENABLED
-	GDMonoAssembly *tools_assembly;
-	GDMonoAssembly *tools_project_editor_assembly;
+	GDMonoAssembly *tools_assembly = nullptr;
+	GDMonoAssembly *tools_project_editor_assembly = nullptr;
 #endif
 
 	LoadedApiAssembly core_api_assembly;
@@ -150,7 +150,7 @@ private:
 	void _init_godot_api_hashes();
 	void _init_exception_policy();
 
-	GDMonoLog *gdmono_log;
+	GDMonoLog *gdmono_log = nullptr;
 
 #if defined(WINDOWS_ENABLED) && defined(TOOLS_ENABLED)
 	MonoRegInfo mono_reg_info;
@@ -250,7 +250,7 @@ public:
 namespace gdmono {
 
 class ScopeDomain {
-	MonoDomain *prev_domain;
+	MonoDomain *prev_domain = nullptr;
 
 public:
 	ScopeDomain(MonoDomain *p_domain) {
@@ -270,7 +270,7 @@ public:
 };
 
 class ScopeExitDomainUnload {
-	MonoDomain *domain;
+	MonoDomain *domain = nullptr;
 
 public:
 	ScopeExitDomainUnload(MonoDomain *p_domain) :

modules/mono/mono_gd/gd_mono_assembly.h

@@ -68,8 +68,8 @@ class GDMonoAssembly {
 	};
 
 	String name;
-	MonoImage *image;
-	MonoAssembly *assembly;
+	MonoImage *image = nullptr;
+	MonoAssembly *assembly = nullptr;
 
 	bool attrs_fetched = false;
 	MonoCustomAttrInfo *attributes = nullptr;

modules/mono/mono_gd/gd_mono_cache.h

@@ -41,91 +41,91 @@ struct CachedData {
 	// corlib classes
 
 	// Let's use the no-namespace format for these too
-	GDMonoClass *class_MonoObject; // object
-	GDMonoClass *class_bool; // bool
-	GDMonoClass *class_int8_t; // sbyte
-	GDMonoClass *class_int16_t; // short
-	GDMonoClass *class_int32_t; // int
-	GDMonoClass *class_int64_t; // long
-	GDMonoClass *class_uint8_t; // byte
-	GDMonoClass *class_uint16_t; // ushort
-	GDMonoClass *class_uint32_t; // uint
-	GDMonoClass *class_uint64_t; // ulong
-	GDMonoClass *class_float; // float
-	GDMonoClass *class_double; // double
-	GDMonoClass *class_String; // string
-	GDMonoClass *class_IntPtr; // System.IntPtr
+	GDMonoClass *class_MonoObject = nullptr; // object
+	GDMonoClass *class_bool = nullptr; // bool
+	GDMonoClass *class_int8_t = nullptr; // sbyte
+	GDMonoClass *class_int16_t = nullptr; // short
+	GDMonoClass *class_int32_t = nullptr; // int
+	GDMonoClass *class_int64_t = nullptr; // long
+	GDMonoClass *class_uint8_t = nullptr; // byte
+	GDMonoClass *class_uint16_t = nullptr; // ushort
+	GDMonoClass *class_uint32_t = nullptr; // uint
+	GDMonoClass *class_uint64_t = nullptr; // ulong
+	GDMonoClass *class_float = nullptr; // float
+	GDMonoClass *class_double = nullptr; // double
+	GDMonoClass *class_String = nullptr; // string
+	GDMonoClass *class_IntPtr = nullptr; // System.IntPtr
 
-	GDMonoClass *class_System_Collections_IEnumerable;
-	GDMonoClass *class_System_Collections_ICollection;
-	GDMonoClass *class_System_Collections_IDictionary;
+	GDMonoClass *class_System_Collections_IEnumerable = nullptr;
+	GDMonoClass *class_System_Collections_ICollection = nullptr;
+	GDMonoClass *class_System_Collections_IDictionary = nullptr;
 
 #ifdef DEBUG_ENABLED
-	GDMonoClass *class_System_Diagnostics_StackTrace;
+	GDMonoClass *class_System_Diagnostics_StackTrace = nullptr;
 	GDMonoMethodThunkR<MonoArray *, MonoObject *> methodthunk_System_Diagnostics_StackTrace_GetFrames;
-	GDMonoMethod *method_System_Diagnostics_StackTrace_ctor_bool;
-	GDMonoMethod *method_System_Diagnostics_StackTrace_ctor_Exception_bool;
+	GDMonoMethod *method_System_Diagnostics_StackTrace_ctor_bool = nullptr;
+	GDMonoMethod *method_System_Diagnostics_StackTrace_ctor_Exception_bool = nullptr;
 #endif
 
-	GDMonoClass *class_KeyNotFoundException;
+	GDMonoClass *class_KeyNotFoundException = nullptr;
 
-	MonoClass *rawclass_Dictionary;
+	MonoClass *rawclass_Dictionary = nullptr;
 	// -----------------------------------------------
 
-	GDMonoClass *class_Vector2;
-	GDMonoClass *class_Vector2i;
-	GDMonoClass *class_Rect2;
-	GDMonoClass *class_Rect2i;
-	GDMonoClass *class_Transform2D;
-	GDMonoClass *class_Vector3;
-	GDMonoClass *class_Vector3i;
-	GDMonoClass *class_Basis;
-	GDMonoClass *class_Quaternion;
-	GDMonoClass *class_Transform3D;
-	GDMonoClass *class_AABB;
-	GDMonoClass *class_Color;
-	GDMonoClass *class_Plane;
-	GDMonoClass *class_StringName;
-	GDMonoClass *class_NodePath;
-	GDMonoClass *class_RID;
-	GDMonoClass *class_GodotObject;
-	GDMonoClass *class_GodotResource;
-	GDMonoClass *class_Node;
-	GDMonoClass *class_Control;
-	GDMonoClass *class_Node3D;
-	GDMonoClass *class_WeakRef;
-	GDMonoClass *class_Callable;
-	GDMonoClass *class_SignalInfo;
-	GDMonoClass *class_Array;
-	GDMonoClass *class_Dictionary;
-	GDMonoClass *class_MarshalUtils;
-	GDMonoClass *class_ISerializationListener;
+	GDMonoClass *class_Vector2 = nullptr;
+	GDMonoClass *class_Vector2i = nullptr;
+	GDMonoClass *class_Rect2 = nullptr;
+	GDMonoClass *class_Rect2i = nullptr;
+	GDMonoClass *class_Transform2D = nullptr;
+	GDMonoClass *class_Vector3 = nullptr;
+	GDMonoClass *class_Vector3i = nullptr;
+	GDMonoClass *class_Basis = nullptr;
+	GDMonoClass *class_Quaternion = nullptr;
+	GDMonoClass *class_Transform3D = nullptr;
+	GDMonoClass *class_AABB = nullptr;
+	GDMonoClass *class_Color = nullptr;
+	GDMonoClass *class_Plane = nullptr;
+	GDMonoClass *class_StringName = nullptr;
+	GDMonoClass *class_NodePath = nullptr;
+	GDMonoClass *class_RID = nullptr;
+	GDMonoClass *class_GodotObject = nullptr;
+	GDMonoClass *class_GodotResource = nullptr;
+	GDMonoClass *class_Node = nullptr;
+	GDMonoClass *class_Control = nullptr;
+	GDMonoClass *class_Node3D = nullptr;
+	GDMonoClass *class_WeakRef = nullptr;
+	GDMonoClass *class_Callable = nullptr;
+	GDMonoClass *class_SignalInfo = nullptr;
+	GDMonoClass *class_Array = nullptr;
+	GDMonoClass *class_Dictionary = nullptr;
+	GDMonoClass *class_MarshalUtils = nullptr;
+	GDMonoClass *class_ISerializationListener = nullptr;
 
 #ifdef DEBUG_ENABLED
-	GDMonoClass *class_DebuggingUtils;
+	GDMonoClass *class_DebuggingUtils = nullptr;
 	GDMonoMethodThunk<MonoObject *, MonoString **, int *, MonoString **> methodthunk_DebuggingUtils_GetStackFrameInfo;
 #endif
 
-	GDMonoClass *class_ExportAttribute;
-	GDMonoField *field_ExportAttribute_hint;
-	GDMonoField *field_ExportAttribute_hintString;
-	GDMonoClass *class_SignalAttribute;
-	GDMonoClass *class_ToolAttribute;
-	GDMonoClass *class_AnyPeerAttribute;
-	GDMonoClass *class_AuthorityAttribute;
-	GDMonoClass *class_GodotMethodAttribute;
-	GDMonoField *field_GodotMethodAttribute_methodName;
-	GDMonoClass *class_ScriptPathAttribute;
-	GDMonoField *field_ScriptPathAttribute_path;
-	GDMonoClass *class_AssemblyHasScriptsAttribute;
-	GDMonoField *field_AssemblyHasScriptsAttribute_requiresLookup;
-	GDMonoField *field_AssemblyHasScriptsAttribute_scriptTypes;
+	GDMonoClass *class_ExportAttribute = nullptr;
+	GDMonoField *field_ExportAttribute_hint = nullptr;
+	GDMonoField *field_ExportAttribute_hintString = nullptr;
+	GDMonoClass *class_SignalAttribute = nullptr;
+	GDMonoClass *class_ToolAttribute = nullptr;
+	GDMonoClass *class_AnyPeerAttribute = nullptr;
+	GDMonoClass *class_AuthorityAttribute = nullptr;
+	GDMonoClass *class_GodotMethodAttribute = nullptr;
+	GDMonoField *field_GodotMethodAttribute_methodName = nullptr;
+	GDMonoClass *class_ScriptPathAttribute = nullptr;
+	GDMonoField *field_ScriptPathAttribute_path = nullptr;
+	GDMonoClass *class_AssemblyHasScriptsAttribute = nullptr;
+	GDMonoField *field_AssemblyHasScriptsAttribute_requiresLookup = nullptr;
+	GDMonoField *field_AssemblyHasScriptsAttribute_scriptTypes = nullptr;
 
-	GDMonoField *field_GodotObject_ptr;
-	GDMonoField *field_StringName_ptr;
-	GDMonoField *field_NodePath_ptr;
-	GDMonoField *field_Image_ptr;
-	GDMonoField *field_RID_ptr;
+	GDMonoField *field_GodotObject_ptr = nullptr;
+	GDMonoField *field_StringName_ptr = nullptr;
+	GDMonoField *field_NodePath_ptr = nullptr;
+	GDMonoField *field_Image_ptr = nullptr;
+	GDMonoField *field_RID_ptr = nullptr;
 
 	GDMonoMethodThunk<MonoObject *> methodthunk_GodotObject_Dispose;
 	GDMonoMethodThunkR<Array *, MonoObject *> methodthunk_Array_GetPtr;

modules/mono/mono_gd/gd_mono_class.h

@@ -70,11 +70,11 @@ class GDMonoClass {
 	StringName namespace_name;
 	StringName class_name;
 
-	MonoClass *mono_class;
-	GDMonoAssembly *assembly;
+	MonoClass *mono_class = nullptr;
+	GDMonoAssembly *assembly = nullptr;
 
 	bool attrs_fetched;
-	MonoCustomAttrInfo *attributes;
+	MonoCustomAttrInfo *attributes = nullptr;
 
 	// This contains both the original method names and remapped method names from the native Godot identifiers to the C# functions.
 	// Most method-related functions refer to this and it's possible this is unintuitive for outside users; this may be a prime location for refactoring or renaming.

modules/mono/mono_gd/gd_mono_field.h

@@ -36,14 +36,14 @@
 #include "i_mono_class_member.h"
 
 class GDMonoField : public IMonoClassMember {
-	GDMonoClass *owner;
-	MonoClassField *mono_field;
+	GDMonoClass *owner = nullptr;
+	MonoClassField *mono_field = nullptr;
 
 	StringName name;
 	ManagedType type;
 
 	bool attrs_fetched;
-	MonoCustomAttrInfo *attributes;
+	MonoCustomAttrInfo *attributes = nullptr;
 
 public:
 	virtual GDMonoClass *get_enclosing_class() const final { return owner; }

modules/mono/mono_gd/gd_mono_marshal.h

@@ -196,14 +196,14 @@ PackedVector3Array mono_array_to_PackedVector3Array(MonoArray *p_array);
 #pragma pack(push, 1)
 
 struct M_Callable {
-	MonoObject *target;
-	MonoObject *method_string_name;
-	MonoDelegate *delegate;
+	MonoObject *target = nullptr;
+	MonoObject *method_string_name = nullptr;
+	MonoDelegate *delegate = nullptr;
 };
 
 struct M_SignalInfo {
-	MonoObject *owner;
-	MonoObject *name_string_name;
+	MonoObject *owner = nullptr;
+	MonoObject *name_string_name = nullptr;
 };
 
 #pragma pack(pop)

modules/mono/mono_gd/gd_mono_method.h

@@ -54,7 +54,7 @@ class GDMonoMethod : public IMonoClassMember {
 
 	friend class GDMonoClass;
 
-	MonoMethod *mono_method;
+	MonoMethod *mono_method = nullptr;
 
 public:
 	virtual GDMonoClass *get_enclosing_class() const final;

modules/mono/mono_gd/gd_mono_property.h

@@ -36,14 +36,14 @@
 #include "i_mono_class_member.h"
 
 class GDMonoProperty : public IMonoClassMember {
-	GDMonoClass *owner;
-	MonoProperty *mono_property;
+	GDMonoClass *owner = nullptr;
+	MonoProperty *mono_property = nullptr;
 
 	StringName name;
 	ManagedType type;
 
 	bool attrs_fetched;
-	MonoCustomAttrInfo *attributes;
+	MonoCustomAttrInfo *attributes = nullptr;
 
 	unsigned int param_buffer_size;
 

modules/mono/mono_gd/gd_mono_wasm_m2n.h

@@ -47,11 +47,11 @@ struct Mono_InterpMethodArguments {
 	size_t ilen;
 	void **iargs;
 	size_t flen;
-	double *fargs;
+	double *fargs = nullptr;
 	void **retval;
 	size_t is_float_ret;
 	//#ifdef TARGET_WASM
-	void *sig;
+	void *sig = nullptr;
 	//#endif
 };
 } // extern "C"

modules/mono/signal_awaiter_utils.h

@@ -68,7 +68,7 @@ public:
 };
 
 class EventSignalCallable : public CallableCustom {
-	Object *owner;
+	Object *owner = nullptr;
 	const CSharpScript::EventSignal *event_signal;
 
 public:

modules/navigation/editor/navigation_mesh_editor_plugin.h

@@ -42,14 +42,14 @@ class NavigationMeshEditor : public Control {
 
 	GDCLASS(NavigationMeshEditor, Control);
 
-	AcceptDialog *err_dialog;
+	AcceptDialog *err_dialog = nullptr;
 
-	HBoxContainer *bake_hbox;
-	Button *button_bake;
-	Button *button_reset;
-	Label *bake_info;
+	HBoxContainer *bake_hbox = nullptr;
+	Button *button_bake = nullptr;
+	Button *button_reset = nullptr;
+	Label *bake_info = nullptr;
 
-	NavigationRegion3D *node;
+	NavigationRegion3D *node = nullptr;
 
 	void _bake_pressed();
 	void _clear_pressed();
@@ -68,7 +68,7 @@ public:
 class NavigationMeshEditorPlugin : public EditorPlugin {
 	GDCLASS(NavigationMeshEditorPlugin, EditorPlugin);
 
-	NavigationMeshEditor *navigation_mesh_editor;
+	NavigationMeshEditor *navigation_mesh_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "NavigationMesh"; }

modules/navigation/nav_utils.h

@@ -89,7 +89,7 @@ struct Edge {
 };
 
 struct Polygon {
-	NavRegion *owner;
+	NavRegion *owner = nullptr;
 
 	/// The points of this `Polygon`
 	std::vector<Point> points;

modules/noise/noise.h

@@ -39,7 +39,7 @@ class Noise : public Resource {
 	// Helper struct for get_seamless_image(). See comments in .cpp for usage.
 	template <typename T>
 	struct img_buff {
-		T *img;
+		T *img = nullptr;
 		int width; // Array dimensions & default modulo for image.
 		int height;
 		int offset_x; // Offset index location on image (wrapped by specified modulo).

modules/openxr/editor/openxr_editor_plugin.h

@@ -37,7 +37,7 @@
 class OpenXREditorPlugin : public EditorPlugin {
 	GDCLASS(OpenXREditorPlugin, EditorPlugin);
 
-	OpenXRActionMapEditor *action_map_editor;
+	OpenXRActionMapEditor *action_map_editor = nullptr;
 
 public:
 	virtual String get_name() const override { return "OpenXRPlugin"; }

modules/openxr/extensions/openxr_extension_wrapper.h

@@ -43,7 +43,7 @@ class OpenXRAPI;
 
 class OpenXRExtensionWrapper {
 protected:
-	OpenXRAPI *openxr_api;
+	OpenXRAPI *openxr_api = nullptr;
 
 	// Store extension we require.
 	// If bool pointer is a nullptr this means this extension is mandatory and initialisation will fail if it is not available

modules/raycast/raycast_occlusion_cull.h

@@ -115,7 +115,7 @@ private:
 
 	struct Scenario {
 		struct RaycastThreadData {
-			CameraRayTile *rays;
+			CameraRayTile *rays = nullptr;
 			const uint32_t *masks;
 		};
 
@@ -124,7 +124,7 @@ private:
 			uint32_t vertex_count;
 			Transform3D xform;
 			const Vector3 *read;
-			Vector3 *write;
+			Vector3 *write = nullptr;
 		};
 
 		Thread *commit_thread = nullptr;

modules/regex/regex.h

@@ -71,7 +71,7 @@ public:
 class RegEx : public RefCounted {
 	GDCLASS(RegEx, RefCounted);
 
-	void *general_ctx;
+	void *general_ctx = nullptr;
 	void *code = nullptr;
 	String pattern;
 

modules/theora/video_stream_theora.h

@@ -112,7 +112,7 @@ class VideoStreamPlaybackTheora : public VideoStreamPlayback {
 	RingBuffer<uint8_t> ring_buffer;
 	Vector<uint8_t> read_buffer;
 	bool thread_eof = false;
-	Semaphore *thread_sem;
+	Semaphore *thread_sem = nullptr;
 	Thread thread;
 	SafeFlag thread_exit;
 

modules/visual_script/editor/visual_script_property_selector.h

@@ -62,23 +62,23 @@ class VisualScriptPropertySelector : public ConfirmationDialog {
 		SCOPE_ALL = SCOPE_BASE | SCOPE_INHERITERS | SCOPE_UNRELATED
 	};
 
-	LineEdit *search_box;
+	LineEdit *search_box = nullptr;
 
-	Button *case_sensitive_button;
-	Button *hierarchy_button;
+	Button *case_sensitive_button = nullptr;
+	Button *hierarchy_button = nullptr;
 
-	Button *search_visual_script_nodes;
-	Button *search_classes;
-	Button *search_operators;
+	Button *search_visual_script_nodes = nullptr;
+	Button *search_classes = nullptr;
+	Button *search_operators = nullptr;
 
-	Button *search_methods;
-	Button *search_signals;
-	Button *search_constants;
-	Button *search_properties;
-	Button *search_theme_items;
+	Button *search_methods = nullptr;
+	Button *search_signals = nullptr;
+	Button *search_constants = nullptr;
+	Button *search_properties = nullptr;
+	Button *search_theme_items = nullptr;
 
-	OptionButton *scope_combo;
-	Tree *results_tree;
+	OptionButton *scope_combo = nullptr;
+	Tree *results_tree = nullptr;
 
 	class SearchRunner;
 	Ref<SearchRunner> search_runner;
@@ -94,7 +94,7 @@ class VisualScriptPropertySelector : public ConfirmationDialog {
 	void _item_selected();
 	void _hide_requested();
 
-	EditorHelpBit *help_bit;
+	EditorHelpBit *help_bit = nullptr;
 
 	bool properties = false;
 	bool visual_script_generic = false;
@@ -104,9 +104,9 @@ class VisualScriptPropertySelector : public ConfirmationDialog {
 	String base_type;
 	String base_script;
 	ObjectID script;
-	Object *instance;
+	Object *instance = nullptr;
 	bool virtuals_only = false;
-	VBoxContainer *vbox;
+	VBoxContainer *vbox = nullptr;
 
 protected:
 	void _notification(int p_what);
@@ -159,9 +159,9 @@ class VisualScriptPropertySelector::SearchRunner : public RefCounted {
 		}
 	};
 
-	VisualScriptPropertySelector *selector_ui;
-	Control *ui_service;
-	Tree *results_tree;
+	VisualScriptPropertySelector *selector_ui = nullptr;
+	Control *ui_service = nullptr;
+	Tree *results_tree = nullptr;
 	String term;
 	int search_flags;
 	int scope_flags;

modules/visual_script/visual_script.h

@@ -495,7 +495,7 @@ class VisualScriptLanguage : public ScriptLanguage {
 	String _debug_error;
 	int _debug_call_stack_pos = 0;
 	int _debug_max_call_stack;
-	CallLevel *_call_stack;
+	CallLevel *_call_stack = nullptr;
 
 public:
 	StringName notification = "_notification";