This Serialize::Destroy method isn't actually needed anymore. Fixes weirdness from a few Serializable items we had on the stack. Added a comment about why operator< in Reference fails.

include/base.h

@@ -121,10 +121,17 @@ class Reference : public ReferenceBase
 		return NULL;
 	}
 
-	inline bool operator<(const Reference<T> &other) const
-	{
-		return this < &other;
-	}
+	/** Note that we can't have an operator< that returns this->ref < other.ref
+	 * because this function is used to sort objects in containers (such as set
+	 * or map), and if the references themselves can change if the object they
+	 * refer to is invalidated or changed, then this screws with the order that
+	 * the objects would be in the container without properly adjusting the
+	 * container, resulting in weird stuff.
+	 *
+	 * As such, we don't allow storing references in containers that require
+	 * operator<, because they would not be able to compare what the references
+	 * actually referred to.
+	 */
 
 	inline bool operator==(const Reference<T> &other)
 	{

include/serialize.h

@@ -83,11 +83,6 @@ class CoreExport Serializable : public virtual Base
  	/* Unique ID (per type, not globally) for this object */
 	unsigned int id;
 
-	/* Destroys this object. This is effectively the same thing as
-	 * delete, however it properly cleans up after this object.
-	 */
-	void Destroy();
-
 	/** Marks the object as potentially being updated "soon".
 	 */
 	void QueueUpdate();

modules/database/db_sql.cpp

@@ -185,7 +185,7 @@ class DBSQL : public Module, public Pipe
 	void OnSerializableDestruct(Serializable *obj) anope_override
 	{
 		Serialize::Type *s_type = obj->GetSerializableType();
-		if (s_type)
+		if (s_type && obj->id > 0)
 			this->RunBackground("DELETE FROM `" + this->prefix + s_type->GetName() + "` WHERE `id` = " + stringify(obj->id));
 		this->updated_items.erase(obj);
 	}

modules/database/db_sql_live.cpp

@@ -156,7 +156,8 @@ class DBMySQL : public Module, public Pipe
 		Serialize::Type *s_type = obj->GetSerializableType();
 		if (s_type)
 		{
-			this->RunQuery("DELETE FROM `" + this->prefix + s_type->GetName() + "` WHERE `id` = " + stringify(obj->id));
+			if (obj->id > 0)
+				this->RunQuery("DELETE FROM `" + this->prefix + s_type->GetName() + "` WHERE `id` = " + stringify(obj->id));
 			s_type->objects.erase(obj->id);
 		}
 		this->updated_items.erase(obj);

src/serialize.cpp

@@ -67,6 +67,8 @@ Serializable::Serializable(const Serializable &other) : last_commit(NULL), last_
 
 Serializable::~Serializable()
 {
+	FOREACH_MOD(I_OnSerializableDestruct, OnSerializableDestruct(this));
+
 	SerializableItems->erase(this->s_iter);
 	delete last_commit;
 }
@@ -76,16 +78,6 @@ Serializable &Serializable::operator=(const Serializable &)
 	return *this;
 }
 
-void Serializable::Destroy()
-{
-	if (!this)
-		return;
-
-	FOREACH_MOD(I_OnSerializableDestruct, OnSerializableDestruct(this));
-
-	delete this;
-}
-
 void Serializable::QueueUpdate()
 {
 	/* Schedule updater */