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.

12 files changed, 103 insertions, 103 deletions

diff --git a/modules/mono/glue/arguments_vector.h b/modules/mono/glue/arguments_vector.h
index 7c991d87a4..4405809887 100644
--- a/modules/mono/glue/arguments_vector.h
+++ b/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;
diff --git a/modules/mono/managed_callable.h b/modules/mono/managed_callable.h
index ea7231f43b..d50a8a7b08 100644
--- a/modules/mono/managed_callable.h
+++ b/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;
diff --git a/modules/mono/mono_gd/gd_mono.h b/modules/mono/mono_gd/gd_mono.h
index aab0b31c37..51fd0f8483 100644
--- a/modules/mono/mono_gd/gd_mono.h
+++ b/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) :
diff --git a/modules/mono/mono_gd/gd_mono_assembly.h b/modules/mono/mono_gd/gd_mono_assembly.h
index b25d773be7..a96357b082 100644
--- a/modules/mono/mono_gd/gd_mono_assembly.h
+++ b/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;
diff --git a/modules/mono/mono_gd/gd_mono_cache.h b/modules/mono/mono_gd/gd_mono_cache.h
index 49f47b0a15..4000342c94 100644
--- a/modules/mono/mono_gd/gd_mono_cache.h
+++ b/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_System_Collections_IEnumerable;
-	GDMonoClass *class_System_Collections_ICollection;
-	GDMonoClass *class_System_Collections_IDictionary;
+	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 = 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;
-
-	GDMonoField *field_GodotObject_ptr;
-	GDMonoField *field_StringName_ptr;
-	GDMonoField *field_NodePath_ptr;
-	GDMonoField *field_Image_ptr;
-	GDMonoField *field_RID_ptr;
+	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 = 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;
diff --git a/modules/mono/mono_gd/gd_mono_class.h b/modules/mono/mono_gd/gd_mono_class.h
index bfb5797d4b..b32d561f61 100644
--- a/modules/mono/mono_gd/gd_mono_class.h
+++ b/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.
diff --git a/modules/mono/mono_gd/gd_mono_field.h b/modules/mono/mono_gd/gd_mono_field.h
index abcdef378c..87ef245f3f 100644
--- a/modules/mono/mono_gd/gd_mono_field.h
+++ b/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; }
diff --git a/modules/mono/mono_gd/gd_mono_marshal.h b/modules/mono/mono_gd/gd_mono_marshal.h
index 20d4743e5c..eb33c6119e 100644
--- a/modules/mono/mono_gd/gd_mono_marshal.h
+++ b/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)
diff --git a/modules/mono/mono_gd/gd_mono_method.h b/modules/mono/mono_gd/gd_mono_method.h
index 6e87a60ee2..be11ef5bfe 100644
--- a/modules/mono/mono_gd/gd_mono_method.h
+++ b/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;
diff --git a/modules/mono/mono_gd/gd_mono_property.h b/modules/mono/mono_gd/gd_mono_property.h
index 003bcf05e1..6fc681aeb5 100644
--- a/modules/mono/mono_gd/gd_mono_property.h
+++ b/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;
 
diff --git a/modules/mono/mono_gd/gd_mono_wasm_m2n.h b/modules/mono/mono_gd/gd_mono_wasm_m2n.h
index 68299aa984..83e2750e5a 100644
--- a/modules/mono/mono_gd/gd_mono_wasm_m2n.h
+++ b/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"
diff --git a/modules/mono/signal_awaiter_utils.h b/modules/mono/signal_awaiter_utils.h
index 1a62f36625..532aa3e327 100644
--- a/modules/mono/signal_awaiter_utils.h
+++ b/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: