Paper/patches/server/0781-Fix-CME-in-CraftPersistentDataTypeRegistry.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Gero <gecam59@gmail.com>
Date: Sat, 2 Oct 2021 20:08:30 +0200
Subject: [PATCH] Fix CME in CraftPersistentDataTypeRegistry


diff --git a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataTypeRegistry.java b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataTypeRegistry.java
index f83fbad4b579726ba5f759de3aa752caaf0aa79c..e0ef6964934ca0b280eded00b38220e3c3a0f035 100644
--- a/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataTypeRegistry.java
+++ b/src/main/java/org/bukkit/craftbukkit/persistence/CraftPersistentDataTypeRegistry.java
@@ -121,7 +121,7 @@ public final class CraftPersistentDataTypeRegistry {
         }
     }
 
-    private final Map<Class, TagAdapter> adapters = new HashMap<>();
+    private final Map<Class, TagAdapter> adapters = new java.util.concurrent.ConcurrentHashMap<>(); // Paper - Replace HashMap with ConcurrentHashMap to avoid CME
 
     /**
      * Creates a suitable adapter instance for the primitive class type.