From: "H.Yamamoto" <ocean@...2.ccsnet.ne.jp>
Date: 2006-01-15T23:43:27+09:00
Subject: Re: YAML.load({[]=>""}.to_yaml)

Hi.

>>> After changing test script a bit, ("self.send m" => "self.funcall m") looks working.
>>
>>with GC.stress = true ?
>>-- 
>>Tanaka Akira
>
>No, I didn't try it. But anway, 100 times was not enough. After increased it to million times,
>error was reported.

This is because YAML is not handling CR and LF properly.
By following change, test script passed 100_000 times.

def random_string
  len = rand(4)
  chars = []
  (0...len).each {|i|
    ## don't check bytes with MSB.
    #chars << rand(256)
    c = rand(128)
    chars << c if c != ?\r && c != ?\n # << workaround >>
  }
  chars.pack("C*")
end

1.8.1 treats escape seaquence as string, but 1.8.4 treats it as binary?

E:\ruby-cvs\win32>ruby -ryaml -e 'puts YAML.dump("\n")'
--- |

E:\ruby-cvs\win32>ruby -ryaml -e 'puts YAML.dump("\t")'
--- !binary |
CQ==

And I tried GC.stress, there seems not to be GC problem.

Umm, there is still problem, but I think empty seq/map problem was solved by my patch.
If there is no objection, I want to commit it tommorow or later.