blob: 1581e2a16ab45fd0e60c8442eb5dabd12e0da8f4 [file] [log] [blame]
* Copyright (c) 2019, 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 In checked mode, it is a dynamic type error if a factory returns
* a non-null object whose type is not a subtype of its actual return type.
* @description Checks that returning an object whose type is not subtype of M
* from factory constructor M produces a compile error. Test type alias
* @compile-error
* @author
// SharedOptions=--enable-experiment=nonfunction-type-aliases
class C {}
typedef CAlias = C;
class A extends C {
factory A() { return new CAlias(); }
main() {
new A();