pkg/front_end/testcases/general_nnbd_opt_out/bug31124.dart

// 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=2.6
var a = () => 'b';a();