Kotlin recursive type inference bug

Consider this piece of code:

class Node(children: List<Node>) {
    val sum = children.sumBy { it.sum }
}

Because it can't tell what type sum is supposed to be, rather than produce a meaningful error, it breaks IDEs and compilers:

• IntelliJ complains with org.jetbrains.kotlin.idea.caches.resolve.KotlinIdeaResolutionException: Kotlin resolution encountered a problem while analyzing KtCallExpression
• Try Kotlin throws error 500s at you
• If you manage to compile it, you'll get a org.jetbrains.kotlin.util.ReenteringLazyValueComputationException

However, if you slightly change the code and make it

class Node(children: List<Node>) {
    val sum: Int = children.sumBy { it.sum }
}

(note sum has a type explicitly defined), everything works as it's supposed to.

Just wanted to let you know about this, and maybe see if anyone else had a similar error happen in the past.