// 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 In an expression of the form e1 = e2 where e1 is an
/// assignableExpression denoting a variable or parameter of type void, e2 may
/// have the type void.
/// @description Checks that it is a compile error when assigning the result of
/// a void method invocation to a variable whose declared type is not dynamic
/// @author sgrekhov@unipro.ru


void foo() {
  return;
}

main() {
  int i = foo();
//        ^
// [analyzer] unspecified
// [cfe] unspecified
}
