Bug #2202: Call to a removed method doesn't raise an exception http://redmine.ruby-lang.org/issues/show/2202 Author: Tomas Matousek Status: Open, Priority: High ruby -v: ruby 1.8.6 (2009-03-31 patchlevel 368) [i386-mingw32] obj = Object.new s = class << obj alias_method :rt, :respond_to? self end p obj.methods(false) # [:rt] p obj.rt(:bar) # returns false as expected s.send(:remove_method, :rt) # removes :rt method p obj.methods(false) # [] obj.rt(:foo) # this should raise an exception but it doesn¡Çt D:\temp>ruby19 -v a.rb ruby 1.9.1p129 (2009-05-12 revision 23412) [i386-mswin32] [:rt] false [] D:\temp>ruby -v a.rb ruby 1.8.6 (2009-03-31 patchlevel 368) [i386-mingw32] ["rt"] false [] ---------------------------------------- http://redmine.ruby-lang.org