[K/N][codegen] Fix for https://youtrack.jetbrains.com/issue/KT-47183

kotlin-native/backend.native/tests/codegen/interfaceCallsNCasts/diamond.kt

@@ -0,0 +1,33 @@
+/*
+ * Copyright 2010-2021 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+package codegen.interfaceCallsNCasts.diamond
+
+import kotlin.test.*
+
+interface A<T, U> {
+    fun foo(t: T, u: U) = "A"
+}
+
+interface B<U> : A<String, U>
+
+interface C<T> : A<T, Int>
+
+class Z : B<Int>, C<String> {
+    override fun foo(t: String, u: Int) = "Z"
+}
+
+@Test
+fun runTest() {
+    val z = Z()
+    val c: C<String> = z
+    val b: B<Int> = z
+    val a: A<String, Int> = z
+
+    assertEquals("Z", z.foo("", 0))
+    assertEquals("Z", c.foo("", 0))
+    assertEquals("Z", b.foo("", 0))
+    assertEquals("Z", a.foo("", 0))
+}