From 61fb069c616f7a7ce25a4b37d68b93930ef5c8cf Mon Sep 17 00:00:00 2001
From: Nathan Adams <dinnerbone@dinnerbone.com>
Date: Fri, 2 Mar 2012 20:12:53 +0000
Subject: [PATCH] Fixed fatal crashes when there's a block at maxheight at
 spawn - this fixes BUKKIT-922.

---
 src/main/java/net/minecraft/server/Chunk.java | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/main/java/net/minecraft/server/Chunk.java b/src/main/java/net/minecraft/server/Chunk.java
index 34887c3927..ab006bbec0 100644
--- a/src/main/java/net/minecraft/server/Chunk.java
+++ b/src/main/java/net/minecraft/server/Chunk.java
@@ -330,12 +330,14 @@ public class Chunk {
     }
 
     public int getTypeId(int i, int j, int k) {
+        if (j >> 4 >= sections.length) return 0;
         ChunkSection chunksection = this.sections[j >> 4];
 
         return chunksection != null ? chunksection.a(i, j & 15, k) : 0;
     }
 
     public int getData(int i, int j, int k) {
+        if (j >> 4 >= sections.length) return 0;
         ChunkSection chunksection = this.sections[j >> 4];
 
         return chunksection != null ? chunksection.b(i, j & 15, k) : 0;