FIR: reproduce KT-43569

compiler/testData/ir/irText/firProblems/inapplicableCollectionSet.kt.txt

@@ -0,0 +1,32 @@
+class Flaf {
+  constructor(javaName: String) /* primary */ {
+    super/*Any*/()
+    /* <init>() */
+
+  }
+
+  val javaName: String
+    field = javaName
+    get
+
+  private val INSTANCES: MutableMap<String, Flaf>
+    field = mutableMapOf<String, Flaf>()
+    private get
+
+  fun forJavaName(javaName: String): Flaf {
+    var result: Flaf? = <this>.<get-INSTANCES>().get(key = javaName)
+    when {
+      EQEQ(arg0 = result, arg1 = null) -> { // BLOCK
+        result = <this>.<get-INSTANCES>().get(key = javaName + "_alternative")
+        when {
+          EQEQ(arg0 = result, arg1 = null) -> { // BLOCK
+            result = Flaf(javaName = javaName)
+          }
+        }
+        <this>.<get-INSTANCES>().set<String, Flaf>(key = javaName, value = result)
+      }
+    }
+    return result
+  }
+
+}