| Index: src/objects.cc
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| diff --git a/src/objects.cc b/src/objects.cc
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| index 7360172e5b5d6a1036cd5af55e016b2dbb8a6567..e459332c76b47fd4b4d353d76655e7bfd5a2ddd7 100644
 | 
| --- a/src/objects.cc
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| +++ b/src/objects.cc
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| @@ -15710,6 +15710,7 @@ MaybeObject* NameDictionary::TransformPropertiesToFastFor(
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|          // instance descriptor.
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|          MaybeObject* maybe_key = heap->InternalizeString(String::cast(k));
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|          if (!maybe_key->To(&key)) return maybe_key;
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| +        if (key->Equals(heap->empty_string())) return this;
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|        }
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|  
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|        PropertyDetails details = DetailsAt(i);
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| 
 |