fixes stack level too deep exception on action named 'status' returning 'head :ok'

actionpack/CHANGELOG.md

@@ -119,4 +119,11 @@
 
     *Tony Wooster*
 
+*   Fix 'Stack level too deep' when rendering `head :ok` in an action method
+    called 'status' in a controller.
+
+    Fixes #13905
+
+    *Christiaan Van den Poel*
+
 Please check [4-1-stable](https://github.com/rails/rails/blob/4-1-stable/actionpack/CHANGELOG.md) for previous changes.

actionpack/lib/action_controller/metal.rb

@@ -232,5 +232,9 @@ module ActionController
         new.dispatch(name, klass.new(env))
       end
     end
+
+    def _status_code
+      @_status
+    end
   end
 end

actionpack/lib/action_controller/metal/head.rb

@@ -27,7 +27,7 @@ module ActionController
       self.status = status
       self.location = url_for(location) if location
 
-      if include_content?(self.status)
+      if include_content?(self._status_code)
         self.content_type = content_type || (Mime[formats.first] if formats)
         self.response.charset = false if self.response
         self.response_body = " "

actionpack/lib/action_controller/metal/rack_delegation.rb

@@ -6,7 +6,7 @@ module ActionController
     extend ActiveSupport::Concern
 
     delegate :headers, :status=, :location=, :content_type=,
-             :status, :location, :content_type, :to => "@_response"
+             :status, :location, :content_type, :_status_code, :to => "@_response"
 
     def dispatch(action, request)
       set_response!(request)

actionpack/lib/action_dispatch/http/response.rb

@@ -296,6 +296,9 @@ module ActionDispatch # :nodoc:
       cookies
     end
 
+    def _status_code
+      @status
+    end
   private
 
     def before_committed

actionpack/test/controller/integration_test.rb

@@ -775,3 +775,34 @@ class UrlOptionsIntegrationTest < ActionDispatch::IntegrationTest
     assert_equal "/foo/1/edit", url_for(:action => 'edit', :only_path => true)
   end
 end
+
+class HeadWithStatusActionIntegrationTest < ActionDispatch::IntegrationTest
+  class FooController < ActionController::Base
+    def status
+      head :ok
+    end
+  end
+
+  def self.routes
+    @routes ||= ActionDispatch::Routing::RouteSet.new
+  end
+
+  def self.call(env)
+    routes.call(env)
+  end
+
+  def app
+    self.class
+  end
+
+  routes.draw do
+    get "/foo/status" => 'head_with_status_action_integration_test/foo#status'
+  end
+
+  test "get /foo/status with head result does not cause stack overflow error" do
+    assert_nothing_raised do
+      get '/foo/status'
+    end
+    assert_response :ok
+  end
+end