| // 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=checks*/ |
| library test; |
| |
| abstract class I<T> { |
| void f1(T x); |
| void f2(T x); |
| } |
| |
| class C<U> implements I<int> { |
| void f1(int x) {} |
| void f2(int x, [U y]) {} |
| } |
| |
| class D<U> extends C<U> { |
| void f1(int x) {} |
| void f2(int x, [U y]) {} |
| } |
| |
| void g1(C<num> c) { |
| c.f1(1); |
| } |
| |
| void g2(I<num> i) { |
| i.f1(1.5); |
| } |
| |
| void g3(C<num> c) { |
| c.f2(1, 1.5); |
| } |
| |
| void g4(D<num> d) { |
| d.f1(1); |
| } |
| |
| void g5(D<num> d) { |
| d.f2(1, 1.5); |
| } |
| |
| void test() { |
| g2(new C<num>()); |
| } |
| |
| void main() {} |