Capture receiver in generator object

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 2395 matching lines @@
   JSGeneratorObject* generator;
   if (frame->IsConstructor()) {
     generator = JSGeneratorObject::cast(frame->receiver());
   } else {
     MaybeObject* maybe_generator =
         isolate->heap()->AllocateJSGeneratorObject(function);
     if (!maybe_generator->To(&generator)) return maybe_generator;
   }
   generator->set_function(function);
   generator->set_context(Context::cast(frame->context()));
+  generator->set_receiver(frame->receiver());
   generator->set_continuation(0);
   generator->set_operand_stack(isolate->heap()->empty_fixed_array());
 
   return generator;
 }
 
 
 RUNTIME_FUNCTION(MaybeObject*, Runtime_SuspendJSGeneratorObject) {
   HandleScope scope(isolate);
   ASSERT(args.length() == 1);
@@ skipping 10924 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