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Bug
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Resolution: Unresolved
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None
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1.19.2, 1.19.3, 23w03a, 1.20.5 Pre-Release 1, 1.21.1
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None
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Confirmed
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Crash
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Important
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Platform
The bug
When a text component resolved in a bossbar saves to a string greater than 65536 characters, the game writes null to the entry in level.dat, which causes a crash upon reloading the world.
How to reproduce
/summon marker
/summon marker
/execute at @e[type=marker] at @e[type=marker] at @e[type=marker] at @e[type=marker] at @e[type=marker] at @e[type=marker] at @e[type=marker] at @e[type=marker] run summon marker
/bossbar add test:test {"selector":"@e[type=marker]"}
/bossbar set test:test players @p
Now save and quit from the world and attempt to rejoin.
→ 
The game crashes just before loading
java.lang.NullPointerException: Cannot invoke "ru.a(ru$b, sj)" because "$$0" is null at amv.a(SourceFile:128) at egh.a(SourceFile:49) at eha.a(SourceFile:368) at eho.a(SourceFile:46) at ehb.a(SourceFile:218) at ezl.a(SourceFile:862) at efu.f(SourceFile:1177) at efu.e(SourceFile:768) at net.minecraft.client.main.Main.a(SourceFile:244) at net.minecraft.client.main.Main.main(SourceFile:51)
Additionally, this is logged when attempting to save the world:
[16:31:04] [Server thread/ERROR]: Failed to write NBT String java.io.UTFDataFormatException: encoded string ({"extra"...ext":""}) too long: 74296 bytes at java.io.DataOutputStream.writeUTF(DataOutputStream.java:369) ~[?:?] at java.io.DataOutputStream.writeUTF(DataOutputStream.java:333) ~[?:?] at qa.a(SourceFile:83) ~[1.19.2.jar:?] at pj.a(SourceFile:476) ~[1.19.2.jar:?] at pj.a(SourceFile:165) ~[1.19.2.jar:?] at pj.a(SourceFile:476) ~[1.19.2.jar:?] at pj.a(SourceFile:165) ~[1.19.2.jar:?] at pj.a(SourceFile:476) ~[1.19.2.jar:?] at pj.a(SourceFile:165) ~[1.19.2.jar:?] at pj.a(SourceFile:476) ~[1.19.2.jar:?] at pj.a(SourceFile:165) ~[1.19.2.jar:?] at pt.a(SourceFile:134) ~[1.19.2.jar:?] at pt.a(SourceFile:99) ~[1.19.2.jar:?] at pt.a(SourceFile:60) ~[1.19.2.jar:?] at pt.a(SourceFile:54) ~[1.19.2.jar:?] at drq$c.a(SourceFile:391) ~[1.19.2.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:533) ~[1.19.2.jar:?] at net.minecraft.server.MinecraftServer.b(SourceFile:550) ~[1.19.2.jar:?] at fnm.a(SourceFile:86) ~[1.19.2.jar:?] at net.minecraft.server.MinecraftServer.v(SourceFile:665) ~[1.19.2.jar:?] at net.minecraft.server.MinecraftServer.a(SourceFile:257) ~[1.19.2.jar:?] at java.lang.Thread.run(Thread.java:833) [?:?]
- relates to
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- Resolved