From 62510f93b83404aaa155fe78cfa50885477375c6 Mon Sep 17 00:00:00 2001
From: Bukkit/Spigot <noreply+git-bukkit@papermc.io>
Date: Sun, 15 Jan 2012 09:52:56 +0000
Subject: [PATCH] ItemStack.getMaxStackSize no longer incorrectly returns -1
 when not backed by an NMS instance. Thanks to feildmaster for the PR. This
 fixes BUKKIT-530

By: Nathan Adams <dinnerbone@dinnerbone.com>
---
 paper-api/src/main/java/org/bukkit/inventory/ItemStack.java | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/paper-api/src/main/java/org/bukkit/inventory/ItemStack.java b/paper-api/src/main/java/org/bukkit/inventory/ItemStack.java
index d8256fca28..c856b3ae26 100644
--- a/paper-api/src/main/java/org/bukkit/inventory/ItemStack.java
+++ b/paper-api/src/main/java/org/bukkit/inventory/ItemStack.java
@@ -174,6 +174,11 @@ public class ItemStack implements ConfigurationSerializable {
      * @return The maximum you can stack this material to.
      */
     public int getMaxStackSize() {
+        Material material = getType();
+        if (material != null) {
+            return material.getMaxStackSize();
+        }
+
         return -1;
     }