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1 // Copyright 2016 the V8 project authors. All rights reserved. | 1 // Copyright 2016 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 function foo(a) { | 7 function foo(a) { |
8 for (var d in a) { | 8 return a.pop(); |
9 delete a[1]; | |
10 } | |
11 } | 9 } |
12 | 10 |
13 foo([1,2,3]); | 11 var a = new Array(4); |
14 foo([2,3,4]); | 12 |
| 13 assertEquals(undefined, foo(a)); |
| 14 assertEquals(undefined, foo(a)); |
15 %OptimizeFunctionOnNextCall(foo); | 15 %OptimizeFunctionOnNextCall(foo); |
16 foo([1,2,3]); | 16 assertEquals(undefined, foo(a)); |
17 assertOptimized(foo); | 17 Object.prototype.__defineGetter__(0, function() { return 1; }); |
| 18 assertEquals(1, foo(a)); |
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