From: Charles Comstock <redmine@...>
Date: 2008-12-28T13:46:19+09:00
Subject: [ruby-core:20927] [Bug #937] Recursive Hashes As Keys

Bug #937: Recursive Hashes As Keys
http://redmine.ruby-lang.org/issues/show/937

Author: Charles Comstock
Status: Open, Priority: Low
Target version: Ruby 1.8.7

On 1.8.7 hashes which use themselves as keys appear to lack a meaningful value, yet are stored correctly in the keys and values list.

$ ruby -v
ruby 1.8.7 (2008-08-11 patchlevel 72) [i486-linux]
$ ruby -e 'h = {}; h[h] = h; p h,h[h],h.keys[0],h.values[0]'
{{...}=>{...}}
nil
{{...}=>{...}}
{{...}=>{...}}

Is this intended behavior or a bug?


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