`ArrayIndexOutOfBoundsException` in `ByteStack`

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#3,907 opened on Nov 26, 2023 3 comments 0 reactions 0 assignees View on GitHub

@durban is already working on this.

Since Jan 13, 2024.

#3949 by @durban — open

:beetle: bug

Dominant language: Scala
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Description

Look I don't even know…

java.lang.ArrayIndexOutOfBoundsException: Index -268435455 out of bounds for length 402653184
  | => tat cats.effect.ByteStack$.push(ByteStack.scala:59)
	at cats.effect.IOFiber.runLoop(IOFiber.scala:560)
	at cats.effect.IOFiber.autoCedeR(IOFiber.scala:1439)
	at cats.effect.IOFiber.run(IOFiber.scala:119)
	at cats.effect.unsafe.WorkerThread.run(WorkerThread.scala:743)

See DispatcherSpec on the aioobe-reproduction tag at https://github.com/djspiewak/cats-effect

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Research direction

Start with the ByteStack.push frame in ByteStack.scala:59, then run DispatcherSpec using the aioobe-reproduction tag as described. Trace the reproduction through IOFiber and confirm that it no longer produces the reported ArrayIndexOutOfBoundsException.

Written by the indexing model from the issue text.

Assessment

Tech stack: scala
Domain: backend
Issue type: Bug
Difficulty: 3/5
Estimated time: 1-2 days
Activity status: Stale
Clarity: Mostly clear
Newbie friendliness: 20/100