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Issue #27570: Avoid zero-length memcpy() calls with null source pointers

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This commit is contained in:
Martin Panter 2016-09-07 11:04:41 +00:00
parent 799520c91e
commit be8da9c990
5 changed files with 40 additions and 15 deletions
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14
Lib/test/test_array.py
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@ -38,14 +38,24 @@ def __init__(self, typecode, newarg=None):
if have_long_long:
typecodes += 'qQ'
class BadConstructorTest(unittest.TestCase):
class MiscTest(unittest.TestCase):
def test_constructor(self):
def test_bad_constructor(self):
self.assertRaises(TypeError, array.array)
self.assertRaises(TypeError, array.array, spam=42)
self.assertRaises(TypeError, array.array, 'xx')
self.assertRaises(ValueError, array.array, 'x')
def test_empty(self):
# Exercise code for handling zero-length arrays
a = array.array('B')
a[:] = a
self.assertEqual(len(a), 0)
self.assertEqual(len(a + a), 0)
self.assertEqual(len(a * 3), 0)
a += a
self.assertEqual(len(a), 0)
# Machine format codes.
#