From: Tanaka Akira <akr@...>
Date: 2007-09-23T00:28:49+09:00
Subject: [ruby-dev:31816] SEGV by removing undefined method

以下のようにすると SEGV します。

% ./ruby -e '
class C
  undef display
  remove_method :display
end
'
-e:4: -- control frame ----------
c:0005 p:---- s:0011 b:0011 l:000010 d:000010 CFUNC  :remove_method
c:0004 p:0011 s:0007 b:0007 l:000006 d:000006 CLASS  -e:4
c:0003 p:0006 s:0005 b:0005 l:000004 d:000004 TOP    -e:2
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:4:in `<class:C>'"
DBG> : "-e:2:in `<main>'"
-- backtrace of native function call (Use addr2line) --
0x80f7eb2
0x811466c
0x811470b
0x80c1791
0xb7f61420
0x8058ca8
0x80edf5a
0x80f59e1
0x80f5570
0x80f1daf
0x80f5bba
0x80f61ff
0x805a47d
0x805a500
0x80576c5
0xb7dcaea8
0x80575f1
-------------------------------------------------------
[BUG] Segmentation fault
ruby 1.9.0 (2007-09-22) [i686-linux]
-- 
[田中 哲][たなか あきら][Tanaka Akira]