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  1. Minecraft: Java Edition
  2. MC-188517

Cannot create multiple empty tags in a datapack

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    Details

    • Type: Bug
    • Status: Resolved
    • Resolution: Fixed
    • Affects Version/s: 1.16 Pre-release 3
    • Fix Version/s: 1.16 Pre-release 4
    • Labels:
      None
    • Environment:
      Ubuntu 18.04
      openjdk version "1.8.0_252"
    • Confirmation Status:
      Confirmed
    • Category:
      Crash, Data Packs
    • Mojang Priority:
      Very Important

      Description

      If you try to create multiple empty tags in a datapack, the server crashes on startup.

      Steps to reproduce:

      1. Add the attached datapack to your world
      2. (Make sure the datapack is enabled)
      3. Observe that the server crashes
      (1.16 Pre-Release 3) latest.log
      [21:16:39] [main/WARN]: Failed to load datapacks, can't proceed with server load. You can either fix your datapacks or reset to vanilla with --safeMode
      java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException: Multiple entries with same value: oops:ohno=adc@594a6048 and oops:uhoh=adc@594a6048
      	at java.util.concurrent.CompletableFuture.reportGet(CompletableFuture.java:357) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture.get(CompletableFuture.java:1908) ~[?:1.8.0_252]
      	at net.minecraft.server.Main.main(SourceFile:138) [server.jar:?]
      Caused by: java.lang.IllegalArgumentException: Multiple entries with same value: oops:ohno=adc@594a6048 and oops:uhoh=adc@594a6048
      	at com.google.common.collect.ImmutableMap.checkNoConflict(ImmutableMap.java:186) ~[server.jar:?]
      	at com.google.common.collect.RegularImmutableBiMap.checkNoConflictInValueBucket(RegularImmutableBiMap.java:132) ~[server.jar:?]
      	at com.google.common.collect.RegularImmutableBiMap.fromEntryArray(RegularImmutableBiMap.java:88) ~[server.jar:?]
      	at com.google.common.collect.RegularImmutableBiMap.fromEntries(RegularImmutableBiMap.java:57) ~[server.jar:?]
      	at com.google.common.collect.ImmutableBiMap.copyOf(ImmutableBiMap.java:321) ~[server.jar:?]
      	at com.google.common.collect.ImmutableBiMap.copyOf(ImmutableBiMap.java:294) ~[server.jar:?]
      	at adg.b(SourceFile:167) ~[server.jar:?]
      	at adg.a(SourceFile:163) ~[server.jar:?]
      	at adh.a(SourceFile:69) ~[server.jar:?]
      	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:670) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture$Completion.run(CompletableFuture.java:456) ~[?:1.8.0_252]
      	at abg.a(SourceFile:71) ~[server.jar:?]
      	at abg.a(SourceFile:70) ~[server.jar:?]
      	at java.util.concurrent.CompletableFuture$UniCompletion.claim(CompletableFuture.java:543) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture.uniAccept(CompletableFuture.java:667) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture$UniAccept.tryFire(CompletableFuture.java:646) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture.complete(CompletableFuture.java:1975) ~[?:1.8.0_252]
      	at abg$1.a(SourceFile:53) ~[server.jar:?]
      	at abg$1.a(SourceFile:50) ~[server.jar:?]
      	at java.util.concurrent.CompletableFuture.uniCompose(CompletableFuture.java:966) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture$UniCompose.tryFire(CompletableFuture.java:940) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture.postComplete(CompletableFuture.java:488) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1609) ~[?:1.8.0_252]
      	at java.util.concurrent.CompletableFuture$AsyncSupply.exec(CompletableFuture.java:1596) ~[?:1.8.0_252]
      	at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289) ~[?:1.8.0_252]
      	at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056) ~[?:1.8.0_252]
      	at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692) ~[?:1.8.0_252]
      	at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157) ~[?:1.8.0_252]
      

        Attachments

        1. empty_tags.zip
          1 kB
        2. latest.log
          4 kB

          Activity

            People

            Assignee:
            boq [Mojang] Bartosz Bok
            Reporter:
            Earthcomputer Earthcomputer
            Votes:
            16 Vote for this issue
            Watchers:
            7 Start watching this issue

              Dates

              Created:
              Updated:
              Resolved:
              CHK: