Prevent inline constructor generation when duplicate properties are present i...

src/objects.h

 // Copyright 2006-2009 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 1874 matching lines @@
   // If adding a real property, map transitions must be removed.  If adding
   // a transition, they must not be removed.  All null descriptors are removed.
   MUST_USE_RESULT Object* CopyInsert(Descriptor* descriptor,
                                      TransitionFlag transition_flag);
 
   // Remove all transitions.  Return  a copy of the array with all transitions
   // removed, or a Failure object if the new array could not be allocated.
   MUST_USE_RESULT Object* RemoveTransitions();
 
   // Sort the instance descriptors by the hash codes of their keys.
+  // Does not check for duplicates.
+  void SortUnchecked();
+
+  // Sort the instance descriptors by the hash codes of their keys.
+  // Checks the result for duplicates.
   void Sort();
 
   // Search the instance descriptors for given name.
   inline int Search(String* name);
 
   // As the above, but uses DescriptorLookupCache and updates it when
   // necessary.
   inline int SearchWithCache(String* name);
 
   // Tells whether the name is present int the array.
@@ skipping 1630 matching lines @@
   // Age is reset when GC notices that the code object is referenced
   // from the stack or compilation cache.
   inline int code_age();
   inline void set_code_age(int age);
 
 
   // Check whether a inlined constructor can be generated with the given
   // prototype.
   bool CanGenerateInlineConstructor(Object* prototype);
 
+  // Prevents further attempts to generate inline constructors.
+  // To be called if generation failed for any reason.
+  void ForbidInlineConstructor();
+
   // For functions which only contains this property assignments this provides
   // access to the names for the properties assigned.
   DECL_ACCESSORS(this_property_assignments, Object)
   inline int this_property_assignments_count();
   inline void set_this_property_assignments_count(int value);
   String* GetThisPropertyAssignmentName(int index);
   bool IsThisPropertyAssignmentArgument(int index);
   int GetThisPropertyAssignmentArgument(int index);
   Object* GetThisPropertyAssignmentConstant(int index);
 
@@ skipping 2007 matching lines @@
     } else {
       value &= ~(1 << bit_position);
     }
     return value;
   }
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_OBJECTS_H_