IllegalCallableAccessException on private fields

[ubuntudroid]

Suppose you have a data class with a private parameter:

data class Test(
    val a: String,
    private val b: String,
)

Calling pprint(Test("a", "b")) will result in the following exception:

kotlin.reflect.full.IllegalCallableAccessException: java.lang.IllegalAccessException: Class java.lang.Class<kotlin.reflect.jvm.internal.calls.CallerImpl$FieldGetter> cannot access private final field java.lang.String com.test.Test.b of class java.lang.Class<com.test.Test>
    at kotlin.reflect.jvm.internal.KCallableImpl.call(KCallableImpl.kt:280)
    at kotlin.reflect.jvm.internal.KProperty1Impl.get(KProperty1Impl.kt:35)
    at kotlin.reflect.jvm.internal.KProperty1Impl.invoke(KProperty1Impl.kt:41)
    <pprint callsite>