Hi, i know kotlin is a null safe language, but jvm has recently (JDK14) added Helpful NPE (for NullP...

# compiler

[suresh]

Hi, i know kotlin is a null safe language, but jvm has recently (JDK14) added Helpful NPE (for NullPointer exceptions thrown by JVM https://openjdk.java.net/jeps/358) which will describe precisely which variable is null. Can we get the same message in the NPE thrown by kotlin compiler in the following scenario?

[suresh]

fun main() {
println(Customer().address!!.country!!.name)
}

data class Customer(val address: Address? = null) {
  inner class Address(val country: Country? = null)
  inner class Country(val name: String)
}

[suresh]

Kotlin stacktrace

Exception in thread "main" java.lang.NullPointerException
	at dev.suresh.misc.HelpfulNPE.run(HelpfulNPE.kt:7)

JDK 17 stacktrace

java.lang.NullPointerException: Cannot read field "name" because "address.country" is null
	at dev.suresh.npe.HelpfulNPE.main(HelpfulNPE.java:7)

[rnett]

See https://youtrack.jetbrains.com/issue/KT-6989