// 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. | |
// Check that typedef type parameters are verified to satisfy their bounds. | |
typedef F<T extends num> = T Function<U>(T x); | |
void g(/*@compile-error=unspecified*/ F<String>? f) {} | |
main() { | |
g(null); | |
} |