// 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 = 2.9

void main() {
  int Function(int) f;

  List<num> l = [];
  /*@compile-error=unspecified*/ var a = l.map(f);
}