| Index: src/type-feedback-vector.h
 | 
| diff --git a/src/type-feedback-vector.h b/src/type-feedback-vector.h
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| index fee985191f6122890c598aa06424a38ecb325dda..c8f68bd1fbca8a40f5c92cd0743e65dfeb75d161 100644
 | 
| --- a/src/type-feedback-vector.h
 | 
| +++ b/src/type-feedback-vector.h
 | 
| @@ -120,6 +120,7 @@ class TypeFeedbackVector : public FixedArray {
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|    // Conversion from a slot or ic slot to an integer index to the underlying
 | 
|    // array.
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|    int GetIndex(FeedbackVectorSlot slot) const {
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| +    DCHECK(slot.ToInt() < first_ic_slot_index());
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|      return kReservedIndexCount + ic_metadata_length() + slot.ToInt();
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|    }
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|  
 | 
| 
 |