| Index: test/mjsunit/string-charcodeat.js
 | 
| diff --git a/test/mjsunit/string-charcodeat.js b/test/mjsunit/string-charcodeat.js
 | 
| index 8be6a092e6b8e557c7ecfe6fe73cea1dce7ecc47..72dc8190af133f57d6c9c7b4454049c2542a460a 100644
 | 
| --- a/test/mjsunit/string-charcodeat.js
 | 
| +++ b/test/mjsunit/string-charcodeat.js
 | 
| @@ -231,3 +231,6 @@ for (var i = 0; i < 5; i++) {
 | 
|  }
 | 
|  %OptimizeFunctionOnNextCall(directlyOnPrototype);
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|  directlyOnPrototype();
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| +
 | 
| +assertTrue(isNaN(%_StringCharCodeAt("ABC", -1)));
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| +assertTrue(isNaN(%_StringCharCodeAt("ABC", 4)));
 | 
| 
 |