Strict Mode assignment to read only property.

src/x64/virtual-frame-x64.h

 // Copyright 2011 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 325 matching lines @@
   // frame.  Both are dropped.
   Result CallKeyedLoadIC(RelocInfo::Mode mode);
 
   // Call store IC.  If the load is contextual, value is found on top of the
   // frame.  If not, value and receiver are on the frame.  Both are dropped.
   Result CallStoreIC(Handle<String> name, bool is_contextual,
                      StrictModeFlag strict_mode);
 
   // Call keyed store IC.  Value, key, and receiver are found on top
   // of the frame.  All three are dropped.
-  Result CallKeyedStoreIC();
+  Result CallKeyedStoreIC(StrictModeFlag strict_mode);
 
   // Call call IC.  Function name, arguments, and receiver are found on top
   // of the frame and dropped by the call.
   // The argument count does not include the receiver.
   Result CallCallIC(RelocInfo::Mode mode, int arg_count, int loop_nesting);
 
   // Call keyed call IC.  Same calling convention as CallCallIC.
   Result CallKeyedCallIC(RelocInfo::Mode mode, int arg_count, int loop_nesting);
 
   // Allocate and call JS function as constructor.  Arguments,
@@ skipping 225 matching lines @@
 
   // Classes that need raw access to the elements_ array.
   friend class FrameRegisterState;
   friend class JumpTarget;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_X64_VIRTUAL_FRAME_X64_H_