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  1. Minecraft: Java Edition
  2. MC-108660

Loading a specific structure containing observers and piston with stucture block crashes server

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    • Icon: Bug Bug
    • Resolution: Won't Fix
    • None
    • Minecraft 16w40a
    • None
    • Windows 10,amd64,java.version=1.8.0_25,64bit(client) Ubuntu server
    • Unconfirmed

      Saving the structure shown in the screenshot and then loading it caused the server to crash. On re-starting the server, it crashed again and produced a crash dump. On the second restart it recovered.
      Further information: The piston in the structure was facing South and the structure was loaded without rotation and with default offset 0 1 0.


      Description: Exception while updating neighbours
      
      java.lang.StackOverflowError: Exception while updating neighbours
      	at ajn.a(SourceFile:456)
      	at ajn.a(SourceFile:434)
      	at apc.e(SourceFile:88)
      	at apc.d(SourceFile:80)
      	at apc.a(SourceFile:68)
      	at ath$a.a(SourceFile:418)
      	at ajn.a(SourceFile:454)
      	at ajn.d(SourceFile:422)
      	at ajn.c(SourceFile:389)
      	at ayx.a(SourceFile:249)
      	at ayx.b(SourceFile:180)
      	at ayx.a(SourceFile:176)
      	at ass.c(SourceFile:419)
      	at arb.a(SourceFile:117)
      	at arb.a(SourceFile:105)
      	at ath$a.a(SourceFile:418)
      	at ajn.a(SourceFile:454)
      	at ajn.a(SourceFile:434)
      	at apc.e(SourceFile:88)
      	at apc.d(SourceFile:80)
      	at apc.a(SourceFile:68)
      	at ath$a.a(SourceFile:418)
      
      -- Block being updated --
      Details:
      	Source block type: ID #218 (tile.observer // apc)
      	Block: minecraft:structure_block[mode=load]
      	Block location: World: (-125,70,103), Chunk: (at 3,4,7 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
      
      -- Block being updated --
      Details:
      	Source block type: ID #1 (tile.stone // aqx)
      	Block: minecraft:observer[facing=south,powered=false]
      	Block location: World: (-125,71,104), Chunk: (at 3,4,8 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
      
      -- Block being updated --
      Details:
      	Source block type: ID #218 (tile.observer // apc)
      	Block: minecraft:structure_block[mode=load]
      	Block location: World: (-125,70,103), Chunk: (at 3,4,7 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
      
      -- Block being updated --
      Details:
      	Source block type: ID #1 (tile.stone // aqx)
      	Block: minecraft:observer[facing=south,powered=false]
      	Block location: World: (-125,71,104), Chunk: (at 3,4,8 in -8,6; contains blocks -128,0,96 to -113,255,111), Region: (-1,0; contains chunks -32,0 to -1,31, blocks -512,0,0 to -1,255,511)
      

            grum [Mojang] Grum (Erik Broes)
            KevinTheDruid Kevin Taylor
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              Created:
              Updated:
              Resolved: