// 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 one of the forms e1 == e2 or e1 != e2 where e1 and e2 are | |
/// constant expressions that evaluate to a numeric, string or boolean value | |
/// or to null. | |
/// @description Checks that an expression of the form e1 == e2 cannot be used | |
/// to initialize a constant variable if e1 does not evaluate to a numeric, | |
/// string or boolean value. | |
/// @author iefremov | |
class A { | |
const A(); | |
} | |
final a = const A(); | |
const m = (a == 1); | |
// ^ | |
// [analyzer] unspecified | |
// [cfe] unspecified | |
main() { | |
try { | |
print(m); | |
} catch (x) {} | |
} |