does_not_explode.rb

# This file does not trigger the BigDecimal bug indicated here: http://www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/

require 'rubygems'
require 'dm-core'

class BigDec
  include DataMapper::Resource
  property :id, Serial
  property :value, BigDecimal
end

DataMapper.setup(:default, :adapter=>:in_memory) 
puts "Create"
b = BigDec.create(:value => "9E69999999")
puts "Find"
b = BigDec.first
puts "Access Value"
b.value
puts "Value of b: #{b.value}"

explodes.rb

# This file triggers the BigDecimal bug indicated here: http://www.ruby-lang.org/en/news/2009/06/09/dos-vulnerability-in-bigdecimal/

require 'rubygems'
require 'dm-core'
require 'dm-validations'

class BigDec
  include DataMapper::Resource
  property :id, Serial
  property :value, BigDecimal
end

DataMapper.setup(:default, :adapter=>:in_memory) 
puts "Create"
b = BigDec.create(:value => "9E69999999")
puts "Find"
b = BigDec.first
puts "Access Value"
b.value
puts "Value of b: #{b.value}"