Language/Expressions/Assignment/null_aware_assignment_static_type_t01.dart

// Copyright (c) 2016, 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.

/// @assertion Evaluation of an assignment a of the form e1?.v = e2 is ...
/// The static type of a is the static type of e2
/// @description Checks that the static type of e1?.v = e2 is the static type
/// of e2
/// @author sgrekhov@unipro.ru


class C {
  var v;
}

main() {
  double e = 3.14;
  C c = new C();
  double? x = c?.v = e;
//             ^^
// [analyzer] STATIC_WARNING.INVALID_NULL_AWARE_OPERATOR
//            ^
// [cfe] Operand of null-aware operation '?.' has type 'C' which excludes null.
}