Don't allow entities to ride themselves - #572

Spigot-Server-Patches/0204-Don-t-allow-entities-to-ride-themselves-572.patch

@@ -0,0 +1,21 @@
+From 4be83edeb2087e34ee74ec25d501b8c286c48b96 Mon Sep 17 00:00:00 2001
+From: Alfie Cleveland <alfeh@me.com>
+Date: Sun, 8 Jan 2017 04:31:36 +0000
+Subject: [PATCH] Don't allow entities to ride themselves - #572
+
+
+diff --git a/src/main/java/net/minecraft/server/Entity.java b/src/main/java/net/minecraft/server/Entity.java
+index ea36c53..97d935f 100644
+--- a/src/main/java/net/minecraft/server/Entity.java
++++ b/src/main/java/net/minecraft/server/Entity.java
+@@ -1869,6 +1869,7 @@ public abstract class Entity implements ICommandListener {
+     }
+ 
+     protected void o(Entity entity) {
++        if (entity == this) throw new IllegalArgumentException("Entities cannot become a passenger of themselves"); // Paper - issue 572
+         if (entity.bB() != this) {
+             throw new IllegalStateException("Use x.startRiding(y), not y.addPassenger(x)");
+         } else {
+-- 
+2.9.3 (Apple Git-75)
+