From: Run Paint Run Run <redmine@...>
Date: 2009-09-05T01:37:13+09:00
Subject: [ruby-core:25365] [Bug #2047] Time#<=> Raises NoMethodError on Incomparable Argument

Bug #2047: Time#<=> Raises NoMethodError on Incomparable Argument
http://redmine.ruby-lang.org/issues/show/2047

Author: Run Paint Run Run
Status: Open, Priority: Normal
Category: core
ruby -v: ruby 1.9.2dev (2009-09-03 trunk 24741) [i686-linux]

$ cat /tmp/time-spaceship.rb 
  p Time.now <=> Object.new

  $ ruby8 -v /tmp/time-spaceship.rb
  ruby 1.8.8dev (2009-09-04) [i686-linux]
  nil

  $ ruby -v /tmp/time-spaceship.rb
  ruby 1.9.2dev (2009-09-03 trunk 24741) [i686-linux]
  /tmp/time-spaceship.rb:1:in `<=>': undefined method `<=>' for #<Object:0x8d3a77c> (NoMethodError)
	from /tmp/time-spaceship.rb:1:in `<main>'

This is a specific example of the wider issue marcandre eloquently explained in http://redmine.ruby-lang.org/issues/show/1697 .


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