diff --git a/Lib/test/test_csv.py b/Lib/test/test_csv.py
index 8af2f0b33..0e1f020d3 100644
--- a/Lib/test/test_csv.py
+++ b/Lib/test/test_csv.py
@@ -571,6 +571,34 @@ class Test_Csv(unittest.TestCase):
                         self.assertEqual(row, rows[i])
 
 
+    @unittest.expectedFailure  # TODO: RUSTPYTHON; AssertionError: Error not raised
+    def test_reader_reentrant_iterator(self):
+        # gh-145105: re-entering the reader from the iterator must not crash.
+        class ReentrantIter:
+            def __init__(self):
+                self.reader = None
+                self.n = 0
+            def __iter__(self):
+                return self
+            def __next__(self):
+                self.n += 1
+                if self.n == 1:
+                    try:
+                        next(self.reader)
+                    except StopIteration:
+                        pass
+                    return "a,b"
+                if self.n == 2:
+                    return "x"
+                raise StopIteration
+
+        it = ReentrantIter()
+        reader = csv.reader(it)
+        it.reader = reader
+        with self.assertRaises(csv.Error):
+            next(reader)
+
+
 class TestDialectRegistry(unittest.TestCase):
     def test_registry_badargs(self):
         self.assertRaises(TypeError, csv.list_dialects, None)