mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-10-06 15:11:58 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 10

Avoid possible undefined behaviour from signed overflow.

Browse source
This commit is contained in:
Mark Dickinson 2010-06-11 16:56:34 +00:00
parent 1c164a6f85
commit ab4096f2f9
2 changed files with 11 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

5
Lib/test/test_struct.py
View file

@ -506,6 +506,11 @@ class StructTest(unittest.TestCase):
for c in [b'\x01', b'\x7f', b'\xff', b'\x0f', b'\xf0']:
self.assertTrue(struct.unpack('>?', c)[0])
def test_count_overflow(self):
hugecount = '{}b'.format(sys.maxsize+1)
self.assertRaises(struct.error, struct.calcsize, hugecount)
if IS32BIT:
def test_crasher(self):
self.assertRaises(MemoryError, struct.pack, "357913941b", "a")