pkg/front_end/testcases/inference_new/infer_instance_field_ref.dart

// Copyright (c) 2017, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

library test;

class A {
  B b = throw '';
}

class B {
  C? c;
}

class C {}

class D extends C {}

var a = new A();
var x = a.b.c;
var y = a.b.c ??= new D();

main() {}