1 files changed, 24 insertions, 0 deletions
diff --git a/patches/server/0447-Fix-crash-from-invalid-ingredient-lists-in-VillagerA.patch b/patches/server/0447-Fix-crash-from-invalid-ingredient-lists-in-VillagerA.patch
new file mode 100644
index 0000000000..7ac0fb0202
--- /dev/null
+++ b/patches/server/0447-Fix-crash-from-invalid-ingredient-lists-in-VillagerA.patch
@@ -0,0 +1,24 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Shane Freeder <[email protected]>
+Date: Sun, 27 Dec 2020 11:31:06 +0000
+Subject: [PATCH] Fix crash from invalid ingredient lists in
+ VillagerAcquireTradeEvent
+
+
+diff --git a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
+index fcb3b66617150ad503bffe65de4900b1e3af8764..2a155d3611ca2370830ca763d40074df6641958f 100644
+--- a/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
++++ b/src/main/java/net/minecraft/world/entity/npc/AbstractVillager.java
+@@ -273,7 +273,11 @@ public abstract class AbstractVillager extends AgeableMob implements InventoryCa
+                     Bukkit.getPluginManager().callEvent(event);
+                 }
+                 if (!event.isCancelled()) {
+-                    recipeList.add(CraftMerchantRecipe.fromBukkit(event.getRecipe()).toMinecraft());
++                    // Paper start - Fix crash from invalid ingredient list
++                    final CraftMerchantRecipe craftMerchantRecipe = CraftMerchantRecipe.fromBukkit(event.getRecipe());
++                    if (craftMerchantRecipe.getIngredients().isEmpty()) return;
++                    recipeList.add(craftMerchantRecipe.toMinecraft());
++                    // Paper end - Fix crash from invalid ingredient list
+                 }
+                 // CraftBukkit end
+                 ++j;