dup strings on return so that in place modifications do not break anything. I am looking at you "compute_table_name"

1 files changed, 1 insertions, 1 deletions

diff --git a/activemodel/lib/active_model/attribute_methods.rb b/activemodel/lib/active_model/attribute_methods.rb
index 21ddef6b75..c985eb293b 100644
--- a/activemodel/lib/active_model/attribute_methods.rb
+++ b/activemodel/lib/active_model/attribute_methods.rb
@@ -109,7 +109,7 @@ module ActiveModel
           # use eval instead of a block to work around a memory leak in dev
           # mode in fcgi
           value = value.nil? ? 'nil' : value.to_s
-          sing.send(:define_method, name) { value }
+          sing.send(:define_method, name) { value.dup }
         end
       end