| // TODO(multitest): This was automatically migrated from a multitest and may |
| // contain strange or dead code. |
| |
| // Copyright (c) 2018, 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 test program to test arithmetic operations. |
| |
| class B {} |
| |
| class C { |
| B call(B b) => b; |
| } |
| |
| typedef B BToB(B x); |
| |
| class D { |
| BToB f() => null; |
| void g(C x) {} |
| } |
| |
| class E extends D { |
| // This override is illegal because C is not a subtype of BToB. |
| |
| |
| // This override is illegal because BToB is not a supertype of C. |
| |
| } |
| |
| main() { |
| new E(); |
| } |
