/* | |
* Copyright (c) 2015, 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 | |
* ifNullExpression: | |
* logicalOrExpression (‘??’ logicalOrExpression)* | |
* | |
* @description Check that it is a compile time error, if '??' is used twice | |
* | |
* @compile-error | |
* @author sgrekhov@unipro.ru | |
*/ | |
main() { | |
var x = 10 ?? ?? 20; | |
} |