pkg/front_end/testcases/inference/constructors_infer_from_arguments_factory.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.

/*@testedFeatures=inference*/
library test;

class C<T> {
  T t;

  C._();

  factory C(T t) {
    var /*@type=C<T>*/ x = new C<T>._();
    x.t = t;
    return x;
  }
}

main() {
  var /*@type=C<int>*/ x = new /*@typeArgs=int*/ C(42);
  x.t = /*error:INVALID_ASSIGNMENT*/ 'hello';
}