From: Takashi Tamura <redmine@...>
Date: 2009-05-10T00:09:05+09:00
Subject: [ruby-dev:38398] [Bug #1451] dl in ruby-1.9 can't parse signatures correctly.

Bug #1451: dl in ruby-1.9 can't parse signatures correctly.
http://redmine.ruby-lang.org/issues/show/1451

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 (2009-05-02 trunk 23326) [i686-linux]

1.9 の dl の cparser.rb が空白があるシグネチャを正しくパースできません。

 $ cat d7.rb
 require 'dl/import'
 
 module M
   extend DL::Importer
   dlload 'libc.so.6'
   extern 'void * memmove(void *, void *, unsigned long                   )'
 end

 $ ruby-1.9 -v d7.rb
 ruby 1.9.2dev (2009-05-02 trunk 23326) [i686-linux]
 /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/cparser.rb:104:in `parse_ctype': unknown type: unsigned long    (DL::DLError)
        from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/cparser.rb:53:in `block in parse_signature'
        from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/cparser.rb:53:in `collect'
        from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/cparser.rb:53:in `parse_signature'
        from /usr/local/pkg/ruby-1.9/lib/ruby/1.9.1/dl/import.rb:116:in `extern'
        from d7.rb:6:in `<module:M>'
        from d7.rb:3:in `<main>'

パッチです。

 $ svn diff lib/dl/cparser.rb
 Index: lib/dl/cparser.rb
 ===================================================================
 --- lib/dl/cparser.rb   (リビジョン 23328)
 +++ lib/dl/cparser.rb   (作業コピー)
 @@ -41,7 +41,7 @@ module DL
        case signature
        when /^([\d\w@\*_\s]+)\(([\d\w\*_\s\,\[\]]*)\)$/
          ret = $1
 -        args = $2
 +        args = $2.sub(/\A\s*/, '').sub(/\s*\z/, '')
          ret = ret.split(/\s+/)
          args = args.split(/\s*,\s*/)
          func = ret.pop


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