Consider out-of-bounds accesses as escaping uses.

src/hydrogen-escape-analysis.h

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 31 matching lines @@
         captured_(0, zone()),
         number_of_objects_(0),
         number_of_values_(0),
         cumulative_values_(0),
         block_states_(graph->blocks()->length(), zone()) { }
 
   void Run();
 
  private:
   void CollectCapturedValues();
-  bool HasNoEscapingUses(HValue* value);
+  bool HasNoEscapingUses(HValue* value, int size);
   void PerformScalarReplacement();
   void AnalyzeDataFlow(HInstruction* instr);
 
   HCapturedObject* NewState(HInstruction* prev);
   HCapturedObject* NewStateForAllocation(HInstruction* prev);
   HCapturedObject* NewStateForLoopHeader(HInstruction* prev, HCapturedObject*);
   HCapturedObject* NewStateCopy(HInstruction* prev, HCapturedObject* state);
 
   HPhi* NewPhiAndInsert(HBasicBlock* block, HValue* incoming_value, int index);
 
@@ skipping 19 matching lines @@
 
   // Map of block IDs to the data-flow state at block entry during the
   // scalar replacement phase.
   ZoneList<HCapturedObject*> block_states_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_HYDROGEN_ESCAPE_ANALYSIS_H_