1 files changed, 10 insertions, 0 deletions
diff --git a/test/readline/test_readline.rb b/test/readline/test_readline.rb
index e3a7c5d4ec..0d5efeac01 100644
--- a/test/readline/test_readline.rb
+++ b/test/readline/test_readline.rb
@@ -303,6 +303,16 @@ class TestReadline < Test::Unit::TestCase
     end
   end
 
+  def test_closed_outstream
+    bug5803 = '[ruby-dev:45043]'
+    IO.pipe do |r, w|
+      Readline.input = r
+      Readline.output = w
+      (w << "##\t").close
+      assert_raise(IOError, bug5803) {Readline.readline}
+    end
+  end
+
   private
 
   def replace_stdio(stdin_path, stdout_path)