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Fix issue #3547: ctypes is confused by bitfields of varying integer types

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Reviewed by Fredrik Lundh and Skip Montanaro.

Backport from trunk.
This commit is contained in:
Thomas Heller 2008-09-24 19:00:21 +00:00
parent a7a94a0a21
commit 8e97ea9c6b
3 changed files with 19 additions and 1 deletions
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15
Lib/ctypes/test/test_bitfields.py
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@ -215,6 +215,21 @@ class BitFieldTest(unittest.TestCase):
("b", c_ubyte, 4)]
self.failUnlessEqual(sizeof(X), sizeof(c_byte))
def test_mixed_4(self):
class X(Structure):
_fields_ = [("a", c_short, 4),
("b", c_short, 4),
("c", c_int, 24),
("d", c_short, 4),
("e", c_short, 4),
("f", c_int, 24)]
# MS compilers do NOT combine c_short and c_int into
# one field, gcc does.
if os.name in ("nt", "ce"):
self.failUnlessEqual(sizeof(X), sizeof(c_int) * 4)
else:
self.failUnlessEqual(sizeof(X), sizeof(c_int) * 2)
def test_anon_bitfields(self):
# anonymous bit-fields gave a strange error message
class X(Structure):