fial.rb

# Works on: ruby 1.8.7 (2008-08-11 patchlevel 72) [i686-darwin9.8.0] (installed using rvm)
# Fails on: ruby 1.8.7 (2010-01-10 patchlevel 249) [i686-darwin9] (installed using macports)

def caller &block
  block.call
end

class Base
  def method_missing meth
    puts "#{meth} called on Base"
  end
end

class Child < Base
  def foo
    caller {super()} # this fails on newer version
   # 1.times { super() }
  end
end

c = Child.new
c.foo