diff --git a/Lib/test/test_os.py b/Lib/test/test_os.py
index 440cd6c..8ff0296 100644
--- a/Lib/test/test_os.py
+++ b/Lib/test/test_os.py
@@ -591,6 +591,14 @@
         result = os.stat(fname)
         self.assertNotEqual(result.st_size, 0)
 
+    @unittest.skipUnless(sys.platform == "win32", "Win32 specific tests")
+    def test_stat_block_device(self):
+        # bpo-38030: os.stat fails for block devices
+        # Test a filename like "//./C:"
+        fname = "//./" + os.path.splitdrive(os.getcwd())[0]
+        result = os.stat(fname)
+        self.assertEqual(result.st_mode, stat.S_IFBLK)
+
 
 class UtimeTests(unittest.TestCase):
     def setUp(self):