From 757465f533a500a3c5fa137fb1493f33fada09f0 Mon Sep 17 00:00:00 2001
From: CraftBukkit/Spigot <noreply+git-craftbukkit@papermc.io>
Date: Sat, 18 Aug 2012 14:50:09 +0200
Subject: [PATCH] Fix instances where Signs have null lines. Addresses
 BUKKIT-684

By: V10lator <v10lator@myway.de>
---
 .../main/java/org/bukkit/craftbukkit/block/CraftSign.java | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java b/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
index ae54e0f49..8e8a1c582 100644
--- a/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
+++ b/paper-server/src/main/java/org/bukkit/craftbukkit/block/CraftSign.java
@@ -35,7 +35,13 @@ public class CraftSign extends CraftBlockState implements Sign {
         boolean result = super.update(force);
 
         if (result) {
-            System.arraycopy(lines, 0, sign.lines, 0, lines.length);
+            for(int i = 0; i < 4; i++) {
+                if(lines[i] != null) {
+                    sign.lines[i] = lines[i];
+                } else {
+                    sign.lines[i] = "";
+                }
+            }
             sign.update();
         }