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Fix marshal's incorrect handling of subclasses of builtin types (backport candidate).

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This commit is contained in:
Raymond Hettinger 2007-11-07 01:13:09 +00:00
parent 9b847b432c
commit 12e94200c0
4 changed files with 25 additions and 16 deletions
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11
Lib/test/test_marshal.py
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@ -244,6 +244,17 @@ class BugsTestCase(unittest.TestCase):
last.append([0])
self.assertRaises(ValueError, marshal.dumps, head)
def test_exact_type_match(self):
# Former bug:
# >>> class Int(int): pass
# >>> type(loads(dumps(Int())))
# <type 'int'>
for typ in (int, long, float, complex, tuple, list, dict, set, frozenset):
# Note: str and unicode sublclasses are not tested because they get handled
# by marshal's routines for objects supporting the buffer API.
subtyp = type('subtyp', (typ,), {})
self.assertRaises(ValueError, marshal.dumps, subtyp())
def test_main():
test_support.run_unittest(IntTestCase,
FloatTestCase,