pkg/front_end/testcases/inference/null_coalescing_operator.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.
// @dart=2.9
/*@testedFeatures=inference*/
library test;

main() {
  List<int> x;
  var /*@ type=List<int*>* */ y =
      x /*@target=List.==*/ ?? /*@ typeArgs=int* */ [];
  List<int> z = y;
}