| // Copyright 2017 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. | |
| function foo(o, k) { return o[k]; } | |
| var a = [1,2]; | |
| a["-1"] = 42; | |
| assertEquals(1, foo(a, 0)); | |
| assertEquals(2, foo(a, 1)); | |
| assertEquals(undefined, foo(a, 3)); | |
| assertEquals(42, foo(a, -1)); |