regress-509961.js 290 Bytes
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// 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.

var o = { x: 0 };
delete o.x;
function store(o, p, v) { o[p] = v; }
store(o, "x", 1);
store(o, "x", 1);
store(o, "0", 1);