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1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2016, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 // | |
5 // DartOptions=--initializing-formal-access | |
6 // VMOptions=--initializing-formal-access | |
7 | 4 |
8 import "package:expect/expect.dart"; | 5 import "package:expect/expect.dart"; |
9 | 6 |
10 class B {} | 7 class B {} |
11 | 8 |
12 class A { | 9 class A { |
13 B x, y; | 10 B x, y; |
14 // Promotion occurs for the initializing formal because C <: B. | 11 // Promotion occurs for the initializing formal because C <: B. |
15 A(this.x) : y = (x is C) ? x.x : x; | 12 A(this.x) : y = (x is C) ? x.x : x; |
16 } | 13 } |
17 | 14 |
18 class C extends A implements B { | 15 class C extends A implements B { |
19 C(B x) : super(x); | 16 C(B x) : super(x); |
20 } | 17 } |
21 | 18 |
22 main() { | 19 main() { |
23 C c = new C(null); | 20 C c = new C(null); |
24 C cc = new C(c); | 21 C cc = new C(c); |
25 Expect.equals(c.y, null); | 22 Expect.equals(c.y, null); |
26 Expect.equals(cc.y, null); | 23 Expect.equals(cc.y, null); |
27 } | 24 } |
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