KT-12152 : leaking this inspection: accessing non-final member / this in non-final class

compiler/testData/diagnostics/tests/constructorConsistency/inspection.kt

@@ -0,0 +1,56 @@
+class First {
+    val x: String
+
+    init {
+        use(<!DEBUG_INFO_LEAKING_THIS!>this<!>) // NPE! Leaking this
+        x = <!DEBUG_INFO_LEAKING_THIS!>foo<!>() // NPE! Own function
+    }
+
+    fun foo() = x
+}
+
+fun use(first: First) = first.x.hashCode()
+
+abstract class Second {
+    val x: String
+
+    init {
+        use(<!DEBUG_INFO_LEAKING_THIS!>this<!>) // Leaking this in non-final
+        x = <!DEBUG_INFO_LEAKING_THIS!>bar<!>() // Own function in non-final
+        <!DEBUG_INFO_LEAKING_THIS!>foo<!>()     // Non-final function call
+    }
+
+    private fun bar() = foo()
+
+    abstract fun foo(): String
+}
+
+fun use(second: Second) = second.x
+
+class SecondDerived : Second() {
+    val y = x // null!
+
+    override fun foo() = y
+}
+
+open class Third {
+    open var x: String
+
+    constructor() {
+        <!DEBUG_INFO_LEAKING_THIS!>x<!> = "X" // Non-final property access
+    }
+}
+
+class ThirdDerived : Third() {
+    override var x: String = "Y"
+        set(arg) { field = "$arg$y" }
+
+    val y = ""
+}
+
+class Fourth {
+    val x: String
+        get() = y
+
+    val y = <!DEBUG_INFO_LEAKING_THIS!>x<!> // null!
+}