v8/test/mjsunit/regress/regress-933179.js

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// Copyright 2019 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.
var o = { ...{ length : 1 } };
o.x = 1;
delete o.x;
o.length = 2;