bd97fcaed0
R=ulan@chromium.org Review URL: https://codereview.chromium.org/563733002 git-svn-id: https://v8.googlecode.com/svn/branches/bleeding_edge@23869 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
37 lines
829 B
JavaScript
37 lines
829 B
JavaScript
// Copyright 2014 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Flags: --allow-natives-syntax
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var b = [];
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b[10000] = 1;
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// Required to reproduce the bug.
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assertTrue(%HasDictionaryElements(b));
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var a1 = [1.5];
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b.__proto__ = a1;
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assertEquals(1.5, ([].concat(b))[0]);
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var a2 = new Int32Array(2);
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a2[0] = 3;
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b.__proto__ = a2
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assertEquals(3, ([].concat(b))[0]);
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function foo(x, y) {
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var a = [];
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a[10000] = 1;
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assertTrue(%HasDictionaryElements(a));
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a.__proto__ = arguments;
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var c = [].concat(a);
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for (var i = 0; i < arguments.length; i++) {
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assertEquals(i + 2, c[i]);
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}
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assertEquals(undefined, c[arguments.length]);
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assertEquals(undefined, c[arguments.length + 1]);
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}
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foo(2);
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foo(2, 3);
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foo(2, 3, 4);
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