LanguageFeatures/Constant-update-2018/ShortCircuitOperators_A01_t11.dart

// Copyright (c) 2019, 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 The [&&] operator is now short-circuit in constant and potentially
/// constant expressions. It only attempts to evaluate the second operand if the
/// first operand evaluates to [true]. This makes [false && (null as
/// String).length] a valid constant expression. The second operand expression
/// still needs to be a potentially constant expression, which is a new use of
/// potentially constant expressions outside of [const] constructor initializer
/// lists.
/// @description Checks that [&&] throws error if the first operand of [&&]
/// operation is [true] and the second one is not valid or is not constant in the
/// constant expression.
/// @author iarkh@unipro.ru


const dynamic i = 10;
bool b = true;
bool? c;
dynamic d;

main() {
  const bool a1 = true && i;
//                ^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const bool a2 = true && b;
//                ^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const bool a3 = true && c;
//                ^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified

  const bool a4 = true && d;
//                ^^^^^^^^^
// [analyzer] unspecified
// [cfe] unspecified
}