bpo-45030: Fix integer overflow in __reduce__ of the range iterator (GH-28000)
It happened with fast range iterator when the calculated stop = start + step * len
was out of the C long range.
(cherry picked from commit 936f6a16b9ef85bd56b18a247b962801e954c30e)
Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
diff --git a/Lib/test/test_range.py b/Lib/test/test_range.py
index 897162b..851ad5b 100644
--- a/Lib/test/test_range.py
+++ b/Lib/test/test_range.py
@@ -375,8 +375,14 @@ def test_pickling(self):
def test_iterator_pickling(self):
testcases = [(13,), (0, 11), (-22, 10), (20, 3, -1), (13, 21, 3),
- (-2, 2, 2), (2**31-3, 2**31-1), (2**33, 2**33+2),
- (2**63-3, 2**63-1), (2**65, 2**65+2)]
+ (-2, 2, 2)]
+ for M in 2**31, 2**63:
+ testcases += [
+ (M-3, M-1), (4*M, 4*M+2),
+ (M-2, M-1, 2), (-M+1, -M, -2),
+ (1, 2, M-1), (-1, -2, -M),
+ (1, M-1, M-1), (-1, -M, -M),
+ ]
for proto in range(pickle.HIGHEST_PROTOCOL + 1):
for t in testcases:
with self.subTest(proto=proto, t=t):