1 files changed, 9 insertions, 0 deletions
diff --git a/Lib/test/test_frame.py b/Lib/test/test_frame.py
index ed413f1..40c734b 100644
--- a/Lib/test/test_frame.py
+++ b/Lib/test/test_frame.py
@@ -408,6 +408,15 @@ class TestCAPI(unittest.TestCase):
         frame = next(gen)
         self.assertIs(gen, _testcapi.frame_getgenerator(frame))
 
+    def test_frame_fback_api(self):
+        """Test that accessing `f_back` does not cause a segmentation fault on
+        a frame created with `PyFrame_New` (GH-99110)."""
+        def dummy():
+            pass
+
+        frame = _testcapi.frame_new(dummy.__code__, globals(), locals())
+        # The following line should not cause a segmentation fault.
+        self.assertIsNone(frame.f_back)
 
 if __name__ == "__main__":
     unittest.main()