diff --git a/Lib/test/test_ctypes/test_generated_structs.py b/Lib/test/test_ctypes/test_generated_structs.py
index c7f100765166a3..4cd2e4a91ebb60 100644
--- a/Lib/test/test_ctypes/test_generated_structs.py
+++ b/Lib/test/test_ctypes/test_generated_structs.py
@@ -405,6 +405,16 @@ class Example_gh_86098_pack(Structure):
                 ("b", c_uint8, 8),
                 ("c", c_uint32, 16)]
 
+@register()
+class Example_gh_59324_17(Structure):
+    _fields_ = [("a", c_int32, 17),
+                ("b", c_int16, 1)]
+
+@register()
+class Example_gh_59324_13(Structure):
+    _fields_ = [("a", c_int32, 13),
+                ("b", c_int16, 5)]
+
 @register()
 class AnonBitfields(Structure):
     class X(Structure):