Fixing a subtle bug in receiver resolution when a thrown and caught function ...

src/contexts.h

 // 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 246 matching lines @@
   // Tells whether the global context is marked with out of memory.
   bool has_out_of_memory() {
     return global_context()->out_of_memory() == Heap::true_value();
   }
 
   // Mark the global context with out of memory.
   void mark_out_of_memory() {
     global_context()->set_out_of_memory(Heap::true_value());
   }
 
+  // The exception holder is the object used as a with object in
+  // the implementation of a catch block.
+  bool is_exception_holder(Object* object) {
+    return IsCatchContext() && extension() == object;
+  }
+
 #define GLOBAL_CONTEXT_FIELD_ACCESSORS(index, type, name) \
   void  set_##name(type* value) {                         \
     ASSERT(IsGlobalContext());                            \
     set(index, value);                                    \
   }                                                       \
   type* name() {                                          \
     ASSERT(IsGlobalContext());                            \
     return type::cast(get(index));                        \
   }
   GLOBAL_CONTEXT_FIELDS(GLOBAL_CONTEXT_FIELD_ACCESSORS)
@@ skipping 36 matching lines @@
 #ifdef DEBUG
   // Bootstrapping-aware type checks.
   static bool IsBootstrappingOrContext(Object* object);
   static bool IsBootstrappingOrGlobalObject(Object* object);
 #endif
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_CONTEXTS_H_