From c1adaf0ff29d70a232abe3060c0ba7640bd4e9aa Mon Sep 17 00:00:00 2001
From: Piotr Solnica <piotr.solnica@gmail.com>
Date: Tue, 1 Oct 2013 13:33:56 +0200
Subject: [PATCH] Freeze default option hash created by builder (refs #202)

---
 lib/virtus/builder.rb | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/lib/virtus/builder.rb b/lib/virtus/builder.rb
index 8d9326bc..a8e741c6 100644
--- a/lib/virtus/builder.rb
+++ b/lib/virtus/builder.rb
@@ -138,7 +138,7 @@ def options
       { :coerce             => config.coerce,
         :finalize           => config.finalize,
         :strict             => config.strict,
-        :configured_coercer => config.coercer }
+        :configured_coercer => config.coercer }.freeze
     end
 
     # Wrapper for the attribute method that is used in .add_included_hook
@@ -215,7 +215,7 @@ def core_extensions
 
     # @api private
     def options
-      super.update(:writer => :private)
+      super.merge(:writer => :private)
     end
 
   end # ValueObjectBuilder