From 47a959dace95eafe79212a444e3f865475c6ee8e Mon Sep 17 00:00:00 2001
From: "Dylan K. Taylor" <odigiman@gmail.com>
Date: Sun, 1 Dec 2019 09:29:22 +0000
Subject: [PATCH] block: fix some possible crashes when plugins overwrite tile
 classes in bad ways phpstan was complaining on level 2, and it's not wrong to
 ...

---
 src/pocketmine/block/BurningFurnace.php | 3 +++
 src/pocketmine/block/Chest.php          | 3 +++
 src/pocketmine/block/ItemFrame.php      | 3 +++
 3 files changed, 9 insertions(+)

diff --git a/src/pocketmine/block/BurningFurnace.php b/src/pocketmine/block/BurningFurnace.php
index 01bbd6779..c189f5b65 100644
--- a/src/pocketmine/block/BurningFurnace.php
+++ b/src/pocketmine/block/BurningFurnace.php
@@ -80,6 +80,9 @@ class BurningFurnace extends Solid{
 			$furnace = $this->getLevel()->getTile($this);
 			if(!($furnace instanceof TileFurnace)){
 				$furnace = Tile::createTile(Tile::FURNACE, $this->getLevel(), TileFurnace::createNBT($this));
+				if(!($furnace instanceof TileFurnace)){
+					return true;
+				}
 			}
 
 			if(!$furnace->canOpenWith($item->getCustomName())){
diff --git a/src/pocketmine/block/Chest.php b/src/pocketmine/block/Chest.php
index b11809ef2..a9cadbb1b 100644
--- a/src/pocketmine/block/Chest.php
+++ b/src/pocketmine/block/Chest.php
@@ -109,6 +109,9 @@ class Chest extends Transparent{
 				$chest = $t;
 			}else{
 				$chest = Tile::createTile(Tile::CHEST, $this->getLevel(), TileChest::createNBT($this));
+				if(!($chest instanceof TileChest)){
+					return true;
+				}
 			}
 
 			if(
diff --git a/src/pocketmine/block/ItemFrame.php b/src/pocketmine/block/ItemFrame.php
index 6038e0a55..6644c682b 100644
--- a/src/pocketmine/block/ItemFrame.php
+++ b/src/pocketmine/block/ItemFrame.php
@@ -47,6 +47,9 @@ class ItemFrame extends Flowable{
 		$tile = $this->level->getTile($this);
 		if(!($tile instanceof TileItemFrame)){
 			$tile = Tile::createTile(Tile::ITEM_FRAME, $this->getLevel(), TileItemFrame::createNBT($this));
+			if(!($tile instanceof TileItemFrame)){
+				return true;
+			}
 		}
 
 		if($tile->hasItem()){