// 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. | |
// @dart=2.9 | |
/*@testedFeatures=checks*/ | |
library test; | |
typedef void F<T>(T x); | |
class C<T> { | |
F<T> operator [](int i) => null; | |
} | |
F<num> test(C<num> c) { | |
return c /*@ checkReturn=(num*) ->* void */ [0]; | |
} | |
main() {} |