Clean warnings: unused variables.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28398 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ext/socket/lib/socket.rb

@@ -577,7 +577,7 @@ class Socket < BasicSocket
   def self.udp_server_recv(sockets)
     sockets.each {|r|
       begin
-        msg, sender_addrinfo, rflags, *controls = r.recvmsg_nonblock
+        msg, sender_addrinfo, _, *controls = r.recvmsg_nonblock
       rescue IO::WaitReadable
         next
       end

lib/forwardable.rb

@@ -246,7 +246,7 @@ module SingleForwardable
   # provided, it is used as the name for the delegate method.
   #
   def def_single_delegator(accessor, method, ali = method)
-    line_no = __LINE__; str = %{
+    str = %{
       def #{ali}(*args, &block)
 	begin
 	  #{accessor}.__send__(:#{method}, *args, &block)
@@ -264,7 +264,3 @@ module SingleForwardable
   alias def_delegators def_single_delegators
   alias def_delegator def_single_delegator
 end
-
-
-
-

lib/matrix.rb

@@ -834,7 +834,6 @@ class Matrix
     a = to_a
     last_column = column_size - 1
     last_row = row_size - 1
-    rank = 0
     pivot_row = 0
     previous_pivot = 1
     0.upto(last_column) do |k|
@@ -1237,7 +1236,7 @@ class Vector
   #   Vector[7, 4, ...]
   #
   def Vector.[](*array)
-    new convert_to_array(array, copy = false)
+    new convert_to_array(array, false)
   end
 
   #
@@ -1532,6 +1531,6 @@ class Vector
   # Overrides Object#inspect
   #
   def inspect
-    str = "Vector"+@elements.inspect
+    "Vector" + @elements.inspect
   end
 end

lib/mkmf.rb

@@ -153,8 +153,7 @@ def map_dir(dir, map = nil)
   map.inject(dir) {|d, (orig, new)| d.gsub(orig, new)}
 end
 
-topdir = File.dirname(libdir = File.dirname(__FILE__))
-extdir = File.expand_path("ext", topdir)
+topdir = File.dirname(File.dirname(__FILE__))
 path = File.expand_path($0)
 $extmk = path[0, topdir.size+1] == topdir+"/"
 $extmk &&= %r"\A(?:ext|enc|tool|test(?:/.+))\z" =~ File.dirname(path[topdir.size+1..-1])

test/ripper/test_parser_events.rb

@@ -1097,8 +1097,8 @@ class TestRipper::ParserEvents < Test::Unit::TestCase
     assert_equal("[fcall(proc,[],&block([],[void()]))]", parse("proc{|;y|}"))
     if defined?(Process::RLIMIT_AS)
       assert_in_out_err(["-I#{File.dirname(__FILE__)}", "-rdummyparser"],
-                        'Process.setrlimit(Process::RLIMIT_AS,102400); puts DummyParser.new("proc{|;y|}").parse',
-                        ["[fcall(proc,[],&block([],[void()]))]"], [], '[ruby-dev:39423]')
+                        'Process.setrlimit(Process::RLIMIT_AS,102400); puts DummyParser.new("proc{|;y|!y}").parse',
+                        ["[fcall(proc,[],&block([],[unary(!,ref(y))]))]"], [], '[ruby-dev:39423]')
     end
   end
 

test/ruby/test_objectspace.rb

@@ -61,6 +61,7 @@ End
       ObjectSpace.define_finalizer(a) { p :ok }
       b = a.dup
       ObjectSpace.define_finalizer(a) { p :ok }
+      !b
     END
     assert_raise(ArgumentError) { ObjectSpace.define_finalizer([], Object.new) }
   end

test/ruby/test_rubyoptions.rb

@@ -182,7 +182,7 @@ class TestRubyOptions < Test::Unit::TestCase
   end
 
   def test_syntax_check
-    assert_in_out_err(%w(-c -e a=1+1), "", ["Syntax OK"], [])
+    assert_in_out_err(%w(-c -e a=1+1 -e !a), "", ["Syntax OK"], [])
   end
 
   def test_invalid_option

test/ruby/test_thread.rb

@@ -231,7 +231,7 @@ class TestThread < Test::Unit::TestCase
       t1 = Thread.new { sleep }
       Thread.pass
       t2 = Thread.new { loop { } }
-      t3 = Thread.new { }.join
+      Thread.new { }.join
       p [Thread.current, t1, t2].map{|t| t.object_id }.sort
       p Thread.list.map{|t| t.object_id }.sort
     INPUT

test/test_mathn.rb

@@ -4,7 +4,7 @@ require_relative 'ruby/envutil'
 # mathn redefines too much. It must be isolated to child processes.
 class TestMathn < Test::Unit::TestCase
   def test_power
-    assert_in_out_err ['-r', 'mathn', '-e', 'a=1**2'], "", [], [], '[ruby-core:25740]'
-    assert_in_out_err ['-r', 'mathn', '-e', 'a=(1<<126)**2'], "", [], [], '[ruby-core:25740]'
+    assert_in_out_err ['-r', 'mathn', '-e', 'a=1**2;!a'], "", [], [], '[ruby-core:25740]'
+    assert_in_out_err ['-r', 'mathn', '-e', 'a=(1<<126)**2;!a'], "", [], [], '[ruby-core:25740]'
   end
 end