ruby-dev

Bug #1788: ある種のメソッドをalias_methodしようとすると落ちる
http://redmine.ruby-lang.org/issues/show/1788

起票者: Akira Matsuda
ステータス: Open, 優先度: Normal
カテゴリ: core, Target version: 1.9.2
ruby -v: ruby 1.9.2dev (2009-07-18 trunk 24186) [i386-darwin9.7.0]

Ruby 1.9.2 preview1で Ruby on RailsのActiveSupportのtry.rbをロードすると異常終了します。

再現コードはこんな感じです。
class Object
  def try(method, *args, &block)
    send(method, *args, &block)
  end 
  remove_method :try                                                                            
  alias_method :try, :__send__
end

エラー内容は以下のとおりです。

/Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/core_ext/try.rb:29: [BUG] rb_add_method: unsupported method type (8)

ruby 1.9.2dev (2009-07-18 trunk 24186) [i386-darwin9.7.0]

-- control frame ----------
c:0036 p:---- s:0101 b:0101 l:000100 d:000100 CFUNC  :alias_method
c:0035 p:0044 s:0096 b:0096 l:000095 d:000095 CLASS  /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/core_ext/try.rb:29
c:0034 p:0009 s:0094 b:0094 l:000093 d:000093 TOP    /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/core_ext/try.rb:1
c:0033 p:---- s:0092 b:0092 l:000091 d:000091 FINISH
c:0032 p:---- s:0090 b:0090 l:000089 d:000089 CFUNC  :require
c:0031 p:0040 s:0086 b:0086 l:000076 d:000085 BLOCK  /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/core_ext.rb:3
c:0030 p:---- s:0082 b:0082 l:000081 d:000081 FINISH
c:0029 p:---- s:0080 b:0080 l:000079 d:000079 CFUNC  :each
c:0028 p:0040 s:0077 b:0077 l:000076 d:000076 TOP    /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support/core_ext.rb:1
c:0027 p:---- s:0075 b:0075 l:000074 d:000074 FINISH
c:0026 p:---- s:0073 b:0073 l:000072 d:000072 CFUNC  :require
c:0025 p:0033 s:0069 b:0069 l:000068 d:000068 TOP    /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/activesupport-2.3.2/lib/active_support.rb:55
c:0024 p:---- s:0067 b:0067 l:000066 d:000066 FINISH
c:0023 p:---- s:0065 b:0065 l:000064 d:000064 CFUNC  :require
c:0022 p:0075 s:0061 b:0061 l:001544 d:001544 TOP    /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/tasks/misc.rake:18
c:0021 p:---- s:0059 b:0059 l:000058 d:000058 FINISH
c:0020 p:---- s:0057 b:0057 l:000056 d:000056 CFUNC  :load
c:0019 p:0012 s:0053 b:0053 l:000044 d:000052 BLOCK  /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/tasks/rails.rb:4
c:0018 p:---- s:0050 b:0050 l:000049 d:000049 FINISH
c:0017 p:---- s:0048 b:0048 l:000047 d:000047 CFUNC  :each
c:0016 p:0043 s:0045 b:0045 l:000044 d:000044 TOP    /Users/matsuda/ruby_192/lib/ruby/gems/1.9.1/gems/rails-2.3.2/lib/tasks/rails.rb:4
c:0015 p:---- s:0043 b:0043 l:000042 d:000042 FINISH
c:0014 p:---- s:0041 b:0041 l:000040 d:000040 CFUNC  :require
c:0013 p:0089 s:0037 b:0037 l:000036 d:000036 TOP    /Users/matsuda/work/src/rails/192/Rakefile:10
c:0012 p:---- s:0035 b:0035 l:000034 d:000034 FINISH
c:0011 p:---- s:0033 b:0033 l:000032 d:000032 CFUNC  :load
c:0010 p:0335 s:0029 b:0029 l:000028 d:000028 METHOD /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:2348
c:0009 p:0009 s:0024 b:0024 l:000017 d:000023 BLOCK  /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:1982
c:0008 p:0009 s:0022 b:0022 l:000021 d:000021 METHOD /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:2033
c:0007 p:0011 s:0018 b:0018 l:000017 d:000017 METHOD /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:1981
c:0006 p:0019 s:0015 b:0015 l:000008 d:000014 BLOCK  /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:1965
c:0005 p:0009 s:0013 b:0013 l:000012 d:000012 METHOD /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:2033
c:0004 p:0011 s:0009 b:0009 l:000008 d:000008 METHOD /Users/matsuda/ruby_192/lib/ruby/1.9.1/rake.rb:1963
c:0003 p:0036 s:0006 b:0006 l:001f64 d:000454 EVAL   /Users/matsuda/bin/rake:31
c:0002 p:---- s:0004 b:0004 l:000003 d:000003 FINISH
c:0001 p:0000 s:0002 b:0002 l:001f64 d:001f64 TOP


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