diff --git a/example/example20.py b/example/example20.py
index 83a914c..78e717d 100644
--- a/example/example20.py
+++ b/example/example20.py
@@ -3,7 +3,8 @@
 
 import numpy as np
 from example import (
-    create_rec_simple, create_rec_packed, create_rec_nested, print_format_descriptors
+    create_rec_simple, create_rec_packed, create_rec_nested, print_format_descriptors,
+    print_rec_simple, print_rec_packed, print_rec_nested
 )
 
 
@@ -28,6 +29,12 @@
     check_eq(arr, [(False, 0, 0.0), (True, 1, 1.5), (False, 2, 3.0)], simple_dtype)
     check_eq(arr, [(False, 0, 0.0), (True, 1, 1.5), (False, 2, 3.0)], packed_dtype)
 
+    # uncomment lines below to cause a segfault upon exit in Py_Finalize :(
+
+    # if dtype == simple_dtype:
+    #     print_rec_simple(arr)
+    # else:
+    #     print_rec_packed(arr)
 
 nested_dtype = np.dtype([('a', simple_dtype), ('b', packed_dtype)])
 
@@ -40,3 +47,4 @@
 check_eq(arr, [((False, 0, 0.0), (True, 1, 1.5)),
                ((True, 1, 1.5), (False, 2, 3.0)),
                ((False, 2, 3.0), (True, 3, 4.5))], nested_dtype)
+# print_rec_nested(arr)