From: Eric Wong <normalperson@...>
Date: 2014-01-05T03:45:54+00:00
Subject: [ruby-core:59557] Re: [ruby-trunk - Feature #9362][Assigned] Minimize cache misshit to gain optimal speed

Eric Wong <normalperson@yhbt.net> wrote:
> Only one failure left (doesn't happen on my 32-bit, only amd64 Debian wheezy):
> 
>   1) Error:
> TestGemSpecification#test_to_ruby_nested_hash:
> ArgumentError: comparison of Hash with nil failed
>     /home/ew/ruby/lib/rubygems/specification.rb:2127:in `sort'
>     /home/ew/ruby/lib/rubygems/specification.rb:2127:in `ruby_code'
>     /home/ew/ruby/lib/rubygems/specification.rb:2272:in `to_ruby'
>     /home/ew/ruby/test/rubygems/test_gem_specification.rb:2091:in `test_to_ruby_nested_hash'

Fixed, it turned out to be more serious than I thought:

  commit 4e4aa22a8def67ed080cb223168905547f776224

      hash.c: do not explode on Hash#hash
      
      This fixes exploding of recursive hashes, as inserting the hash into
      itself would trigger an explode and lead to a corrupted hash and
      wasted memory.

  git pull git://80x24.org/ruby.git pull-495-fixes