[ruby-dev:31709] [BUG] non-initialized struct

以下のようにすると [BUG] が出ます。

% ./ruby -ve '
S = Struct.new(:a)
s = Marshal.dump(S.new(1))
class Object
  remove_const :S
end
class S
end
p Marshal.load(s)'
ruby 1.9.0 (2007-09-01 patchlevel 0) [i686-linux]
-e:9: -- control frame ----------
c:0004 p:---- s:0011 b:0011 l:000010 d:000010 CFUNC  :load
c:0003 p:0078 s:0007 b:0006 l:000005 d:000005 TOP    -e:9
c:0002 p:---- s:0003 b:0003 l:000002 d:000002 FINISH :inherited
c:0001 p:---- s:0001 b:-001 l:000000 d:000000 ------ 
---------------------------
DBG> : "-e:9:in `<main>'"
-- backtrace of native function call (Use addr2line) --
0x80f6d1e
0x8113320
0x81133bf
0x80d8358
0x8070ff8
0x8071752
0x8071765
0x805b936
0x8071998
0x80ecdce
0x80f484d
0x80f43dc
0x80f0c23
0x80f4a26
0x80f506b
0x805a32b
0x805a3ae
0x8057605
0xb7e02ea8
0x8057531
-------------------------------------------------------
[BUG] non-initialized struct
ruby 1.9.0 (2007-09-01) [i686-linux]
-- 
[田中 哲][たなか あきら][Tanaka Akira]