1ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// Copyright 2012 the V8 project authors. All rights reserved. 2ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// Redistribution and use in source and binary forms, with or without 3ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// modification, are permitted provided that the following conditions are 4ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// met: 5ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// 6ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// * Redistributions of source code must retain the above copyright 7ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// notice, this list of conditions and the following disclaimer. 8ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// * Redistributions in binary form must reproduce the above 9ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// copyright notice, this list of conditions and the following 10ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// disclaimer in the documentation and/or other materials provided 11ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// with the distribution. 12ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// * Neither the name of Google Inc. nor the names of its 13ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// contributors may be used to endorse or promote products derived 14ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// from this software without specific prior written permission. 15ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// 16ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org 285924917d324a643d00a8aefee030bd4acea0de0bmachenbach@chromium.org// Flags: --allow-natives-syntax 29ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org 30ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgvar key1 = {}; 31ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgvar key2 = {}; 32ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgvar map = new WeakMap; 33ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org 34ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// Adding hidden properties preserves map sharing. Putting the key into 35ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.org// a WeakMap will cause the first hidden property to be added. 36ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgassertTrue(%HaveSameMap(key1, key2)); 37ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgmap.set(key1, 1); 38ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgmap.set(key2, 2); 39ccab3670e1c4f62878725150ef7bd259e5547f22mstarzinger@chromium.orgassertTrue(%HaveSameMap(key1, key2)); 40