1 files changed, 20 insertions, 0 deletions
diff --git a/test/socket/test_socket.rb b/test/socket/test_socket.rb
index 01d4652abb..b3b6fee5ef 100644
--- a/test/socket/test_socket.rb
+++ b/test/socket/test_socket.rb
@@ -410,4 +410,24 @@ class TestSocket < Test::Unit::TestCase
     assert_equal(stamp.data[-8,8].unpack("Q")[0], t.subsec * 2**64)
   end
 
+  def test_closed_read
+    require 'timeout'
+    require 'socket'
+    bug4390 = '[ruby-core:35203]'
+    server = TCPServer.new("localhost", 0)
+    serv_thread = Thread.new {server.accept}
+    begin sleep(0.1) end until serv_thread.stop?
+    sock = TCPSocket.new("localhost", server.addr[1])
+    client_thread = Thread.new do
+      sock.readline
+    end
+    begin sleep(0.1) end until client_thread.stop?
+    Timeout.timeout(1) do
+      sock.close
+      sock = nil
+      assert_raise(IOError, bug4390) {client_thread.join}
+    end
+  ensure
+    server.close
+  end
 end if defined?(Socket)