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.

5 files changed, 10 insertions, 10 deletions

diff --git a/core/object/callable_method_pointer.h b/core/object/callable_method_pointer.h
index 3cd9ad3819..577d4b9fbd 100644
--- a/core/object/callable_method_pointer.h
+++ b/core/object/callable_method_pointer.h
@@ -38,7 +38,7 @@
 #include "core/variant/callable.h"
 
 class CallableCustomMethodPointerBase : public CallableCustom {
-	uint32_t *comp_ptr;
+	uint32_t *comp_ptr = nullptr;
 	uint32_t comp_size;
 	uint32_t h;
 #ifdef DEBUG_METHODS_ENABLED
diff --git a/core/object/class_db.h b/core/object/class_db.h
index b8a4b3ea2b..5da8523743 100644
--- a/core/object/class_db.h
+++ b/core/object/class_db.h
@@ -85,8 +85,8 @@ public:
 		int index;
 		StringName setter;
 		StringName getter;
-		MethodBind *_setptr;
-		MethodBind *_getptr;
+		MethodBind *_setptr = nullptr;
+		MethodBind *_getptr = nullptr;
 		Variant::Type type;
 	};
 
diff --git a/core/object/message_queue.h b/core/object/message_queue.h
index eaab01d0aa..2219cdb8f6 100644
--- a/core/object/message_queue.h
+++ b/core/object/message_queue.h
@@ -62,10 +62,10 @@ class MessageQueue {
 		};
 	};
 
-	uint8_t *buffer;
+	uint8_t *buffer = nullptr;
 	uint32_t buffer_end = 0;
 	uint32_t buffer_max_used = 0;
-	uint32_t buffer_size;
+	uint32_t buffer_size = 0;
 
 	void _call_function(const Callable &p_callable, const Variant *p_args, int p_argcount, bool p_show_error);
 
diff --git a/core/object/object.h b/core/object/object.h
index b640c4e78a..eeef03dcb9 100644
--- a/core/object/object.h
+++ b/core/object/object.h
@@ -538,8 +538,8 @@ private:
 
 	std::mutex _instance_binding_mutex;
 	struct InstanceBinding {
-		void *binding;
-		void *token;
+		void *binding = nullptr;
+		void *token = nullptr;
 		GDNativeInstanceBindingFreeCallback free_callback = nullptr;
 		GDNativeInstanceBindingReferenceCallback reference_callback = nullptr;
 	};
@@ -849,7 +849,7 @@ class ObjectDB {
 		uint64_t validator : OBJECTDB_VALIDATOR_BITS;
 		uint64_t next_free : OBJECTDB_SLOT_MAX_COUNT_BITS;
 		uint64_t is_ref_counted : 1;
-		Object *object;
+		Object *object = nullptr;
 	};
 
 	static SpinLock spin_lock;
diff --git a/core/object/script_language.h b/core/object/script_language.h
index af4f276825..08b82d798e 100644
--- a/core/object/script_language.h
+++ b/core/object/script_language.h
@@ -430,11 +430,11 @@ public:
 extern uint8_t script_encryption_key[32];
 
 class PlaceHolderScriptInstance : public ScriptInstance {
-	Object *owner;
+	Object *owner = nullptr;
 	List<PropertyInfo> properties;
 	Map<StringName, Variant> values;
 	Map<StringName, Variant> constants;
-	ScriptLanguage *language;
+	ScriptLanguage *language = nullptr;
 	Ref<Script> script;
 
 public: