merge revision(s) 44184: [Backport #9247]

* ext/socket/lib/socket.rb: Don't test $! in "ensure" clause because
	  it may be set before the body.
	  Reported by ko1 and mrkn.  [ruby-core:59088] [Bug #9247]

	* lib/cgi/core.rb: Ditto.

	* lib/drb/ssl.rb: Ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_0_0@44390 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/socket/test_socket.rb

@@ -548,4 +548,75 @@ class TestSocket < Test::Unit::TestCase
     accepted.close if accepted
     sock.close if sock && ! sock.closed?
   end
+
+  def test_connect_in_rescue
+    serv = Addrinfo.tcp(nil, 0).listen
+    addr = serv.connect_address
+    begin
+      raise "dummy error"
+    rescue
+      s = addr.connect
+      assert(!s.closed?)
+    end
+  ensure
+    serv.close if serv && !serv.closed?
+    s.close if s && !s.closed?
+  end
+
+  def test_bind_in_rescue
+    begin
+      raise "dummy error"
+    rescue
+      s = Addrinfo.tcp(nil, 0).bind
+      assert(!s.closed?)
+    end
+  ensure
+    s.close if s && !s.closed?
+  end
+
+  def test_listen_in_rescue
+    begin
+      raise "dummy error"
+    rescue
+      s = Addrinfo.tcp(nil, 0).listen
+      assert(!s.closed?)
+    end
+  ensure
+    s.close if s && !s.closed?
+  end
+
+  def test_udp_server_sockets_in_rescue
+    begin
+      raise "dummy error"
+    rescue
+      ss = Socket.udp_server_sockets(0)
+      ss.each {|s|
+        assert(!s.closed?)
+      }
+    end
+  ensure
+    if ss
+      ss.each {|s|
+        s.close if !s.closed?
+      }
+    end
+  end
+
+  def test_tcp_server_sockets_in_rescue
+    begin
+      raise "dummy error"
+    rescue
+      ss = Socket.tcp_server_sockets(0)
+      ss.each {|s|
+        assert(!s.closed?)
+      }
+    end
+  ensure
+    if ss
+      ss.each {|s|
+        s.close if !s.closed?
+      }
+    end
+  end
+
 end if defined?(Socket)