Inline (wrapper) class IC extends erased inline class IC$Erased

compiler/testData/codegen/box/inlineClasses/toStringCallingPrivateFun.kt

@@ -0,0 +1,12 @@
+// !LANGUAGE: +InlineClasses
+// IGNORE_BACKEND: JVM_IR
+
+inline class IC(val x: String) {
+    private fun privateFun() = x
+    override fun toString() = privateFun()
+}
+
+fun box(): String {
+    val x: Any = IC("OK")
+    return x.toString()
+}