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| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Flags: --allow-natives-syntax |
| 6 |
| 7 function MyWrapper(v) { |
| 8 return { valueOf: function() { return v } }; |
| 9 } |
| 10 |
| 11 function f() { |
| 12 assertEquals("truex", true + "x"); |
| 13 assertEquals("truey", true + new String("y")); |
| 14 assertEquals("truez", true + new MyWrapper("z")); |
| 15 |
| 16 assertEquals("xtrue", "x" + true); |
| 17 assertEquals("ytrue", new String("y") + true); |
| 18 assertEquals("ztrue", new MyWrapper("z") + true); |
| 19 } |
| 20 |
| 21 f(); |
| 22 f(); |
| 23 %OptimizeFunctionOnNextCall(f); |
| 24 f(); |
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