From ded18c4ee6989cb9926c8f626861c7ddf5c5e84f Mon Sep 17 00:00:00 2001
From: IThundxr <me@ithundxr.dev>
Date: Mon, 29 Apr 2024 12:15:30 -0400
Subject: [PATCH] Fix concurrency issue in IdentityHashMap

---
 .../com/simibubi/create/foundation/data/CreateRegistrate.java  | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/simibubi/create/foundation/data/CreateRegistrate.java b/src/main/java/com/simibubi/create/foundation/data/CreateRegistrate.java
index b50e38bd3..1eda3db41 100644
--- a/src/main/java/com/simibubi/create/foundation/data/CreateRegistrate.java
+++ b/src/main/java/com/simibubi/create/foundation/data/CreateRegistrate.java
@@ -2,6 +2,7 @@ package com.simibubi.create.foundation.data;
 
 import static com.simibubi.create.foundation.data.TagGen.pickaxeOnly;
 
+import java.util.Collections;
 import java.util.IdentityHashMap;
 import java.util.Map;
 import java.util.function.BiConsumer;
@@ -52,7 +53,7 @@ import net.minecraftforge.fml.DistExecutor;
 import net.minecraftforge.registries.RegistryObject;
 
 public class CreateRegistrate extends AbstractRegistrate<CreateRegistrate> {
-	private static final Map<RegistryEntry<?>, RegistryObject<CreativeModeTab>> TAB_LOOKUP = new IdentityHashMap<>();
+	private static final Map<RegistryEntry<?>, RegistryObject<CreativeModeTab>> TAB_LOOKUP = Collections.synchronizedMap(new IdentityHashMap<>());
 
 	@Nullable
 	protected Function<Item, TooltipModifier> currentTooltipModifierFactory;