From: Takashi Tamura <redmine@...>
Date: 2009-05-16T17:34:54+09:00
Subject: [ruby-dev:38474] [Bug #1477] DL::Function#unbind raises TypeError

Bug #1477: DL::Function#unbind raises TypeError
http://redmine.ruby-lang.org/issues/show/1477

起票者: Takashi Tamura
ステータス: Open, 優先度: Normal
カテゴリ: ext, Target version: 1.9.2
ruby -v: ruby 1.9.2dev (2009-05-16 trunk 23440) [i686-linux]

コールバックではない単なる DL::Function に対して unbind を呼ぶと
よくわからないエラーが出ます。

 $ cat d11.rb
 
 require 'dl/import'
 
 h = DL::Handle.new
 addr = h.sym('strlen')
 cfunc = DL::CFunc.new(addr, DL::TYPE_INT)
 func = DL::Function.new(cfunc, [DL::TYPE_VOIDP])
 func.unbind

 $ ruby-1.9 -v d11.rb
 ruby 1.9.2dev (2009-05-16 trunk 23440) [i686-linux]
 /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/callback.rb:51:in `[]': no implicit conversion from nil to integer  (TypeError)
         from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/callback.rb:51:in `remove_callback_internal'
         from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/callback.rb:60:in `remove_cdecl_callback'
         from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/func.rb:88:in `unbind'
         from d11.rb:8:in `<main>'


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