lib/active_support/dependencies.rb in activesupport-4.0.9 vs lib/active_support/dependencies.rb in activesupport-4.0.10.rc1

@@ -444,11 +444,11 @@
 
       unless qualified_const_defined?(from_mod.name) && Inflector.constantize(from_mod.name).equal?(from_mod)
         raise ArgumentError, "A copy of #{from_mod} has been removed from the module tree but is still active!"
       end
 
-      raise NameError, "#{from_mod} is not missing constant #{const_name}!" if from_mod.const_defined?(const_name, false)
+      raise NameError.new("#{from_mod} is not missing constant #{const_name}!", const_name) if from_mod.const_defined?(const_name, false)
 
       qualified_name = qualified_name_for from_mod, const_name
       path_suffix = qualified_name.underscore
 
       file_path = search_for_file(path_suffix)
@@ -496,12 +496,12 @@
         rescue NameError => e
           raise unless e.missing_name? qualified_name_for(parent, const_name)
         end
       end
 
-      raise NameError,
-            "uninitialized constant #{qualified_name}",
-            caller.reject { |l| l.starts_with? __FILE__ }
+      name_error = NameError.new("uninitialized constant #{qualified_name}", const_name)
+      name_error.set_backtrace(caller.reject {|l| l.starts_with? __FILE__ })
+      raise name_error
     end
 
     # Remove the constants that have been autoloaded, and those that have been
     # marked for unloading. Before each constant is removed a callback is sent
     # to its class/module if it implements +before_remove_const+.