Issue #6493: Fix handling of c_uint32 bitfields with width of 32 on Windows.

1 files changed, 20 insertions, 0 deletions

diff --git a/Lib/ctypes/test/test_bitfields.py b/Lib/ctypes/test/test_bitfields.py
index 9e0825c..28c8795 100644
--- a/Lib/ctypes/test/test_bitfields.py
+++ b/Lib/ctypes/test/test_bitfields.py
@@ -240,5 +240,25 @@ class BitFieldTest(unittest.TestCase):
             _anonymous_ = ["_"]
             _fields_ = [("_", X)]
 
+    @unittest.skipUnless(hasattr(ctypes, "c_uint32"), "c_int32 is required")
+    def test_uint32(self):
+        class X(Structure):
+            _fields_ = [("a", c_uint32, 32)]
+        x = X()
+        x.a = 10
+        self.assertEquals(x.a, 10)
+        x.a = 0xFDCBA987
+        self.assertEquals(x.a, 0xFDCBA987)
+
+    @unittest.skipUnless(hasattr(ctypes, "c_uint64"), "c_int64 is required")
+    def test_uint64(self):
+        class X(Structure):
+            _fields_ = [("a", c_uint64, 64)]
+        x = X()
+        x.a = 10
+        self.assertEquals(x.a, 10)
+        x.a = 0xFEDCBA9876543211
+        self.assertEquals(x.a, 0xFEDCBA9876543211)
+
 if __name__ == "__main__":
     unittest.main()