Handlify Accessors::FunctionGetArguments method.

src/deoptimizer.cc

 // 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 1600 matching lines @@
     Handle<JSFunction> function(frame->function(), isolate_);
     Handle<JSObject> arguments;
     for (int i = frame->ComputeExpressionsCount() - 1; i >= 0; --i) {
       if (frame->GetExpression(i) == isolate_->heap()->arguments_marker()) {
         ObjectMaterializationDescriptor descriptor =
             deferred_objects_.RemoveLast();
         const int length = descriptor.object_length();
         if (arguments.is_null()) {
           if (frame->has_adapted_arguments()) {
             // Use the arguments adapter frame we just built to materialize the
-            // arguments object. FunctionGetArguments can't throw an exception,
-            // so cast away the doubt with an assert.
-            arguments = Handle<JSObject>(JSObject::cast(
-                Accessors::FunctionGetArguments(*function,
-                                                NULL)->ToObjectUnchecked()));
+            // arguments object. FunctionGetArguments can't throw an exception.
+            arguments = Handle<JSObject>::cast(
+                Accessors::FunctionGetArguments(function));
             values.RewindBy(length);
           } else {
             // Construct an arguments object and copy the parameters to a newly
             // allocated arguments object backing store.
             arguments =
                 isolate_->factory()->NewArgumentsObject(function, length);
             Handle<FixedArray> array =
                 isolate_->factory()->NewFixedArray(length);
             ASSERT(array->length() == length);
             for (int i = length - 1; i >= 0 ; --i) {
@@ skipping 1456 matching lines @@
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
   v->VisitPointer(BitCast<Object**>(&function_));
   v->VisitPointers(parameters_, parameters_ + parameters_count_);
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal