| // 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. |
| |
| /*member: f:deps=[B],explicit=[f.T],needsArgs,needsInst=[<B.S>],test*/ |
| bool f<T>(T a) => a is T; |
| |
| typedef bool F<R>(R a); |
| |
| /*spec.class: B:explicit=[bool Function(B.S)?],implicit=[B.S],needsArgs,test*/ |
| /*prod.class: B:implicit=[B.S],needsArgs,test*/ |
| class B<S> { |
| F<S>? c; |
| |
| method() { |
| return /*spec.needsSignature*/ () { |
| c = f; |
| }; |
| } |
| } |
| |
| main() { |
| B().method(); |
| } |
