b7726c447a
It was shipped in V8 4.4. Review URL: https://codereview.chromium.org/1273543002 Cr-Commit-Position: refs/heads/master@{#30038}
26 lines
866 B
JavaScript
26 lines
866 B
JavaScript
// Copyright 2015 the V8 project authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
//
|
|
// Flags: --harmony-destructuring
|
|
// Flags: --harmony-arrow-functions --strong-mode --allow-natives-syntax
|
|
|
|
(function() {
|
|
function f({ x = function() { return []; } }) { "use strong"; return x(); }
|
|
var a = f({ x: undefined });
|
|
assertTrue(%IsStrong(a));
|
|
|
|
// TODO(rossberg): Loading non-existent properties during destructuring should
|
|
// not throw in strong mode.
|
|
assertThrows(function() { f({}); }, TypeError);
|
|
|
|
function weakf({ x = function() { return []; } }) { return x(); }
|
|
a = weakf({});
|
|
assertFalse(%IsStrong(a));
|
|
|
|
function outerf() { return []; }
|
|
function f2({ x = outerf }) { "use strong"; return x(); }
|
|
a = f2({ x: undefined });
|
|
assertFalse(%IsStrong(a));
|
|
})();
|