Secondary constructors delegation calls and body resolve

compiler/testData/diagnostics/tests/secondaryConstructors/generics.kt

@@ -0,0 +1,18 @@
+// !DIAGNOSTICS: -UNUSED_PARAMETER
+open class B<T>(x: T, y: T) {
+    constructor(x: T): this(x, x) {}
+    constructor(): this(null) {}
+}
+
+class A0 : B<String?> {
+    constructor() {}
+    constructor(x: String): super(x) {}
+    constructor(x: String, y: String): super(x, y) {}
+}
+
+class A1<R> : B<R> {
+    constructor() {}
+    constructor(x: R): super(x) {}
+    constructor(x: R, y: R): super(x, y) {}
+}
+