1 files changed, 18 insertions, 0 deletions
diff --git a/test/ruby/test_io.rb b/test/ruby/test_io.rb
index a49fd0130e..9dc0debe16 100644
--- a/test/ruby/test_io.rb
+++ b/test/ruby/test_io.rb
@@ -3952,4 +3952,22 @@ __END__
       assert_raise(TypeError) {Marshal.dump(w)}
     }
   end
+
+  def test_stdout_to_closed_pipe
+    EnvUtil.invoke_ruby(["-e", "loop {puts :ok}"], "", true, true) do
+      |in_p, out_p, err_p, pid|
+      out = out_p.gets
+      out_p.close
+      err = err_p.read
+    ensure
+      status = Process.wait2(pid)[1]
+      assert_equal("ok\n", out)
+      assert_empty(err)
+      assert_not_predicate(status, :success?)
+      if Signal.list["PIPE"]
+        assert_predicate(status, :signaled?)
+        assert_equal("PIPE", Signal.signame(status.termsig) || status.termsig)
+      end
+    end
+  end
 end