Language/Statements/Return/runtime_type_t01.dart

// Copyright (c) 2011, 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.

/// @assertion Let S be the runtime type of o.
///    • If the body of f is marked async it is a compile type error if o is not
/// null and Future<S> is not a subtype of the actual return type of f.
///    • Otherwise, it is a compile type error if o is not null and the runtime
/// type of o is not a subtype of the actual return type of f.
///
/// @description Checks that compile error is raised if o is not null and
/// the runtime type of o is not a subtype of the actual return type
/// of the immediately enclosing function.
///
/// @compile-error
/// @author kaigorodov

var r = 'a';

int foo() { return r; }

main() {
  foo();
}