From: Run Paint Run Run <redmine@...>
Date: 2009-08-06T23:24:18+09:00
Subject: [ruby-core:24794] [Bug #1901] Segfault for Enumerable#count When Aliased to #size

Bug #1901: Segfault for Enumerable#count When Aliased to #size
http://redmine.ruby-lang.org/issues/show/1901

Author: Run Paint Run Run
Status: Open, Priority: Normal
Category: core
ruby -v: ruby 1.9.2dev (2009-08-05 trunk 24397) [i686-linux]

$ cat /tmp/enum-size.rb
  class E
    include Enumerable
    alias :size :count
    def each
      yield 1
    end
  end
  
  p E.new.count

  $ ruby -v /tmp/enum-size.rb 
  ruby 1.9.2dev (2009-08-05 trunk 24397) [i686-linux]
  Segmentation fault

1.8.7 gives a SystemStackError. It would be nice if #count recognized #size was an alias and didn't try to invoke it.


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