// 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 A constant expression is an expression whose value can never
/// change, and that can be evaluated entirely at compile time.
/// A constant expression is one of the following:
/// . . .
/// • An expression of the form identical(e1, e2) where e1 and e2 are constant
///   expressions and identical is statically bound to the predefined dart
///   function identical() discussed above.
/// @description Checks that identical() with non constant expressions is not a
/// constant expression.
/// @author ilya


var x;
const y = identical(x, x);
//                     ^
// [analyzer] unspecified
// [cfe] unspecified

main() {
  print(y);
}