COMMIT First argument to Socket#getnameinfo can be a 3- or 4-element array.	http://github.com/rubyspec/rubyspec/commit/42aab6bd846e12c4c1917e3776292de45859b265
COMMIT In http://redmine.ruby-lang.org/issues/show/2206, Matz says "delegators should only delegate public methods."	http://github.com/rubyspec/rubyspec/commit/892080e2b0a7c870df48720118b464f712393dad

===================================================================
+++ 20100713T081703
@@ 12 @@
 URL: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1
 リポジトリのルート: http://svn.ruby-lang.org/repos/ruby
 リポジトリ UUID: b2dd03c8-39d4-4d8f-98ff-823fe69b080e
+リビジョン: 28622
 ノード種別: ディレクトリ
 準備中の処理: 特になし
 最終変更者: yugui
@@ 19948 @@
 /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/ruby/ext/socket/extconf.rb:<line_a>: warning: ambiguous first argument; put parentheses or even spaces
 /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/ruby/ext/json/lib/json/editor.rb:<line_a>: warning: shadowing outer local variable - item
 <elapsed> s: .
+TestSystem#test_system: /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/tmp/ruby_script_tmp20100713-6651-14djsbm/ruby_script_tmp.6651:<line_a>: warning: global variable `$zzz' not initialized
 <elapsed> s: .
 TestTCPSocket#test_encoding: <elapsed> s: .
 TestTCPSocket#test_recvfrom: <elapsed> s: .
@@ 73839 @@
 
 Finished in <t> seconds
 
+1 file, 36 examples, 83996 expectations, 0 failures, 0 errors
 == rubyspec/library/prime/instance_spec.rb # <time>
 + bin/ruby mspec/bin/mspec -V -f s -B /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/rubyspec/ruby.1.9.mspec -t /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/bin/ruby rubyspec/library/prime/instance_spec.rb
 ruby <version>
@@ 78261 @@
 - gets the name information and don't resolve it
 - gets the name information and resolve the host
 - gets the name information and resolves the service
+- gets a 3-element array and doesn't resolve hostname
+- gets a 3-element array and esolves the service
+- gets a 4-element array and doesn't resolve hostname
+- gets a 4-element array and esolves the service
 
 
 Finished in <t> seconds

===================================================================
--- 20100712T081803
@@ 12 @@
 URL: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1
 リポジトリのルート: http://svn.ruby-lang.org/repos/ruby
 リポジトリ UUID: b2dd03c8-39d4-4d8f-98ff-823fe69b080e
-リビジョン: 28620
 ノード種別: ディレクトリ
 準備中の処理: 特になし
 最終変更者: yugui
@@ 19948 @@
 /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/ruby/ext/socket/extconf.rb:<line_a>: warning: ambiguous first argument; put parentheses or even spaces
 /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/ruby/ext/json/lib/json/editor.rb:<line_a>: warning: shadowing outer local variable - item
 <elapsed> s: .
-TestSystem#test_system: /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/tmp/ruby_script_tmp20100712-5085-14djsbm/ruby_script_tmp.5085:<line_a>: warning: global variable `$zzz' not initialized
 <elapsed> s: .
 TestTCPSocket#test_encoding: <elapsed> s: .
 TestTCPSocket#test_recvfrom: <elapsed> s: .
@@ 73839 @@
 
 Finished in <t> seconds
 
-1 file, 36 examples, 82402 expectations, 0 failures, 0 errors
 == rubyspec/library/prime/instance_spec.rb # <time>
 + bin/ruby mspec/bin/mspec -V -f s -B /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/rubyspec/ruby.1.9.mspec -t /home/chkbuild/tmp/build/ruby-1.9.1/<buildtime>/bin/ruby rubyspec/library/prime/instance_spec.rb
 ruby <version>