Add internal fields to JSArrayBufferViews (JSTypedArray and JSDataView)

src/runtime.cc

 // Copyright 2012 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 778 matching lines @@
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_TypedArrayInitialize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 5);
   CONVERT_ARG_HANDLE_CHECKED(JSTypedArray, holder, 0);
   CONVERT_SMI_ARG_CHECKED(arrayId, 1);
   CONVERT_ARG_HANDLE_CHECKED(JSArrayBuffer, buffer, 2);
   CONVERT_ARG_HANDLE_CHECKED(Object, byte_offset_object, 3);
   CONVERT_ARG_HANDLE_CHECKED(Object, byte_length_object, 4);
 
+  ASSERT(holder->GetInternalFieldCount() ==
+      v8::ArrayBufferView::kInternalFieldCount);
+  for (int i = 0; i < v8::ArrayBufferView::kInternalFieldCount; i++) {
+    holder->SetInternalField(i, Smi::FromInt(0));
+  }
+
   ExternalArrayType arrayType;
   size_t elementSize;
   switch (arrayId) {
     case ARRAY_ID_UINT8:
       arrayType = kExternalUnsignedByteArray;
       elementSize = 1;
       break;
     case ARRAY_ID_INT8:
       arrayType = kExternalByteArray;
       elementSize = 1;
@@ skipping 196 matching lines @@
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_DataViewInitialize) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 4);
   CONVERT_ARG_HANDLE_CHECKED(JSDataView, holder, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSArrayBuffer, buffer, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, byte_offset, 2);
   CONVERT_ARG_HANDLE_CHECKED(Object, byte_length, 3);
 
+  ASSERT(holder->GetInternalFieldCount() ==
+      v8::ArrayBufferView::kInternalFieldCount);
+  for (int i = 0; i < v8::ArrayBufferView::kInternalFieldCount; i++) {
+    holder->SetInternalField(i, Smi::FromInt(0));
+  }
+
   holder->set_buffer(*buffer);
   ASSERT(byte_offset->IsNumber());
   ASSERT(
       NumberToSize(isolate, buffer->byte_length()) >=
         NumberToSize(isolate, *byte_offset)
         + NumberToSize(isolate, *byte_length));
   holder->set_byte_offset(*byte_offset);
   ASSERT(byte_length->IsNumber());
   holder->set_byte_length(*byte_length);
 
@@ skipping 12921 matching lines @@
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     isolate->counters()->gc_last_resort_from_js()->Increment();
     isolate->heap()->CollectAllGarbage(Heap::kNoGCFlags,
                                        "Runtime::PerformGC");
   }
 }
 
 
 } }  // namespace v8::internal