// 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

import 'dart:async';

/*
* `return exp;` where `exp` has static type `S` is an error if `T` is `void` and
  `S` is not `void`, `dynamic`, or `Null`
*/
int v = null;
void test() {
  return v;
  //     ^
  // [analyzer] COMPILE_TIME_ERROR.RETURN_OF_INVALID_TYPE
  // [cfe] Can't return a value from a void function.
}

void main() {
  test();
}
