Fixing wrong reference to this in eval.

src/runtime.cc

 // Copyright 2006-2008 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 3943 matching lines @@
   // Check for eval() invocations that cross environments. Use the
   // context from the stack if evaluating in current environment.
   Handle<Context> target = Top::global_context();
   if (caller->global_context() == *target) return *caller;
 
   // Otherwise, use the global context from the other environment.
   return *target;
 }
 
 
+static Object* Runtime_EvalReceiver(Arguments args) {
+  ASSERT(args.length() == 1);
+  StackFrameLocator locator;
+  JavaScriptFrame* frame = locator.FindJavaScriptFrame(1);
+  // Fetch the caller context from the frame.
+  Context* caller = Context::cast(frame->context());
+
+  // Check for eval() invocations that cross environments. Use the
+  // top frames receiver if evaluating in current environment.
+  Context* global_context = Top::context()->global()->global_context();
+  if (caller->global_context() == global_context) {
+    return frame->receiver();
+  }
+
+  // Otherwise use the given argument (the global object of the
+  // receiving context).
+  return args[0];
+}
+
+
 static Object* Runtime_GlobalReceiver(Arguments args) {
   ASSERT(args.length() == 1);
   Object* global = args[0];
   if (!global->IsJSGlobalObject()) return Heap::null_value();
   return JSGlobalObject::cast(global)->global_receiver();
 }
 
 
 static Object* Runtime_CompileString(Arguments args) {
   HandleScope scope;
@@ skipping 1878 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage();
   }
 }
 
 
 } }  // namespace v8::internal