3 files changed, 4 insertions, 2 deletions
diff --git a/actionpack/lib/action_dispatch/routing/mapper.rb b/actionpack/lib/action_dispatch/routing/mapper.rb
index 10d733e477..6e06c70dc2 100644
--- a/actionpack/lib/action_dispatch/routing/mapper.rb
+++ b/actionpack/lib/action_dispatch/routing/mapper.rb
@@ -1904,7 +1904,7 @@ module ActionDispatch
             ast = Journey::Parser.parse path
 
             mapping = Mapping.build(@scope, @set, ast, controller, default_action, to, via, formatted, options_constraints, anchor, options)
-            @set.add_route(mapping, ast, as, anchor)
+            @set.add_route(mapping, as)
           end
 
           def match_root_route(options)
diff --git a/actionpack/lib/action_dispatch/routing/redirection.rb b/actionpack/lib/action_dispatch/routing/redirection.rb
index dabc045007..e8f47b8640 100644
--- a/actionpack/lib/action_dispatch/routing/redirection.rb
+++ b/actionpack/lib/action_dispatch/routing/redirection.rb
@@ -36,6 +36,8 @@ module ActionDispatch
         uri.host   ||= req.host
         uri.port   ||= req.port unless req.standard_port?
 
+        req.commit_flash
+
         body = %(<html><body>You are being <a href="#{ERB::Util.unwrapped_html_escape(uri.to_s)}">redirected</a>.</body></html>)
 
         headers = {
diff --git a/actionpack/lib/action_dispatch/routing/route_set.rb b/actionpack/lib/action_dispatch/routing/route_set.rb
index 2672cd24ed..c4719f8a71 100644
--- a/actionpack/lib/action_dispatch/routing/route_set.rb
+++ b/actionpack/lib/action_dispatch/routing/route_set.rb
@@ -565,7 +565,7 @@ module ActionDispatch
         routes.empty?
       end
 
-      def add_route(mapping, path_ast, name, anchor)
+      def add_route(mapping, name)
         raise ArgumentError, "Invalid route name: '#{name}'" unless name.blank? || name.to_s.match(/^[_a-z]\w*$/i)
 
         if name && named_routes[name]