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

src/objects.h

Index: src/objects.h
===================================================================
--- src/objects.h	(revision 5455)
+++ src/objects.h	(working copy)
@@ -1892,6 +1892,11 @@
   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.
@@ -3542,6 +3547,10 @@
   // 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)