Initializing a Json instance on a background thread fails in native

In 0.11.0, when you create a Json instance on a background thread, K/N throws an IncorrectDereferenceException because initializing one touches the private defaultJsonModule global here. I believe the fix is to just mark that global as @SharedImmutable.

You can workaround this by declaring a global Json that’s immutable, which (I think) will get setup and frozen during K/N runtime init. Seems to be working locally

@SharedImmutable
private val DEFAULT_JSON = Json(your_config)

[MichaelOliveiraBx]

You need to add kotlin.native.initRuntimeIfNeeded() before calling DEFAULT_JSON .parse

I had the same problem Here is my code that works :

` // INTERNAL @kotlin.native.ThreadLocal private val parser = Json.nonstrict // or strict in your case

@UnstableDefault
private fun parseDocument(document: String) {

    // mandatory if call in another thread that main thread
    kotlin.native.initRuntimeIfNeeded()

    val parsedJson = try {
        parser.parse(
            Serializer,
            document
        )
    } catch (e: JsonParsingException) {
        println("parseDocument ERROR $e")
        return
    }
}

[benasher44]

Yep agree. They can be closed at the same time, or feel free to close this as dup 😃