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  1. Minecraft: Java Edition
  2. MC-129374

Crash on 32 bit JVMs: "Unable to bootstrap datafixers" due to stack overflow

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Details

    • Bug
    • Status: Resolved
    • Resolution: Fixed
    • Minecraft 18w19b, Minecraft 18w20a, Minecraft 18w20b, Minecraft 18w20c, Minecraft 18w21a, Minecraft 18w21b, Minecraft 18w22a, Minecraft 18w22b, Minecraft 18w22c, Minecraft 1.13-pre1
    • Minecraft 1.13-pre2
    • Intel(R) Core(TM) i5-5200U CPU @ 2.20GHz
      4GB ram
      Intel Graphics
      Windows 8.1 64bit
      Java Version 8 Update 171 32bit
    • Community Consensus

    Description

      Workaround for clients < 1.13-pre2
      • Increase the stack to 1 MB
        • In the Edit Profile menu in the Launcher, check the JVM Arguments box, and add -Xss1M
      Solution for servers
      • Increase the stack to 1 MB
        • Add -Xss1M to the server startup script

      Possible cause

      On 32 bit JVMs the default stack size is 320k whereas on 64 bit JVMs the default stack size is 1M

      The bug

      When trying to open game at 18w19a and b the whole launcher crashes and there is no Crash log for it from game files and windows system

      [0509/180933:INFO:GameCallbacks.cpp(178)] game/xn (Bootstrap 0) error Unable to bootstrap datafixers
      java.lang.StackOverflowError
      	at aax$g.a(SourceFile:178)
      	at aax$m.a(SourceFile:525)
      	at aax$m.a(SourceFile:525)
      	at aao.b(SourceFile:47)
      	at aax$l.a(SourceFile:609)
      	at aax$m.a(SourceFile:529)
      	at aao.b(SourceFile:47)
      	at aax$l.a(SourceFile:609)
      

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              dinnerbone [Mojang] Nathan Adams
              DawidRTG Devu
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              Dates

                Created:
                Updated:
                Resolved:
                CHK: