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Issue 342333002: Array.concat: properly go to dictionary mode when required (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Created 6 years, 6 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved. 1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // Flags: --allow-natives-syntax 5 // Flags: --allow-natives-syntax
6 6
7 // The bug 349885 7 a = [1];
8 8 b = [];
9 function foo(a) { 9 a.__defineGetter__(0, function () {
10 a[292755462] = new Object(); 10 b.length = 0xffffffff;
11 });
12 c = a.concat(b);
13 for (var i = 0; i < 20; i++) {
14 assertEquals(undefined, (c[i]));
11 } 15 }
12 foo(new Array(5));
13 foo(new Array(5));
14 %OptimizeFunctionOnNextCall(foo);
15 foo(new Array(10));
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