For some reason my code stops between those 2 printlns. It prints `init start` and after a few seco...

# getting-started

[Chilli]

For some reason my code stops between those 2 printlns. It prints init start and after a few seconds, displays Test running process exited unexpectedly. Any idea what might it be?
str is String
used is MutableSet<String>

[crummy]

Are you running in multiple threads, or with coroutines? Can you post more code?

[Chilli]

Nope—everything is synchronous—I'm not using coroutines or any library other than the standard one and Kotlin tests. It's running on Kotlin/Native on Windows. It's basically an init block in a class. str: String is a parameter, used: MutableSet<String> is a property in companion object, declared as:

private val used: MutableSet<String> = mutableSetOf()

[Chilli]

image.png

[Chilli]

image.png

[crummy]

What's running the code? A main() function, a test runner?

[Chilli]

A test (using kotlin.test package)

[araqnid]

Sounds like there should be some other error output around “exited unexpectedly”

[Chilli]

It's basically calling a function that creates an instance with a random string

[araqnid]

e.g. a StackOverflowError or something

[crummy]

If you make a main() function that calls just that class, and run that, does the behaviour occur?

[Chilli]

I can't really do it on the current setup — it's a multiplatform library project

[Casey Brooks]

You said it’s in a companion object and running in Kotlin/Native? I think that’s your problem, objects are frozen on creation, so you can’t modify the collection without the runtime throwing immutability exceptions

[Chilli]

There's no immutability exception in the logs, though

[Shawn]

might recommend xposting to #kotlin-native for visibility at this point

[Chilli]

I will, thanks

[Dominaezzz]

Hmm, did you initialise used before or after init ?

[Dominaezzz]

Oh wait, the init is for the class and not the companion object.

[Chilli]

Yeah, just the val used is in the companion object