[MacRuby] #997: Calling a method removed with rb_undef_method gives an ArgumentError instead of a NoMethodError (was: FIxnum.new gives a strange error on MacRuby)

[MacRuby]

#997: Calling a method removed with rb_undef_method gives an ArgumentError
instead of a NoMethodError
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 Reporter:  mrada@…                 |       Owner:  eloy.de.enige@…        
     Type:  defect                  |      Status:  new                    
 Priority:  minor                   |   Milestone:  MacRuby 1.0            
Component:  MacRuby                 |    Keywords:  #reduction             
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Comment(by pthomson@…):

 This is showing up on all methods undefined with {{{ rb_undef_method }}} -
 try NilClass.new, FalseClass.new, TrueClass.new, and so on.
 In the VM source it looks like {{{ RoxorCore::undef_method }}} just uses
 class_replaceMethod to replace the old method with the {{{
 rb_vm_undefined_imp }}} method.
 Laurent, since we can't remove methods (I think) with the ObjC runtime,
 could we replace the rb_vm_undefined_imp method with one that actually
 raises an undefined method exception instead of calling method_missing?

 Changing the title to reflect what's really going on.

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Ticket URL: <http://www.macruby.org/trac/ticket/997#comment:3>
MacRuby <http://macruby.org/>