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Issue #15989: Fix several occurrences of integer overflow

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when result of PyLong_AsLong() narrowed to int without checks.

This is a backport of changesets 13e2e44db99d and 525407d89277.
This commit is contained in:
Serhiy Storchaka 2013-01-19 12:26:26 +02:00
parent ff12fae80e
commit 441d30fac7
16 changed files with 129 additions and 20 deletions
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11
Lib/test/string_tests.py
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@ -5,6 +5,7 @@ Common tests shared by test_str, test_unicode, test_userstring and test_string.
import unittest, string, sys, struct
from test import support
from collections import UserList
import _testcapi
class Sequence:
def __init__(self, seq='wxyz'): self.seq = seq
@ -1142,6 +1143,16 @@ class MixinStrUnicodeUserStringTest:
self.checkraises(TypeError, '%10.*f', '__mod__', ('foo', 42.))
self.checkraises(ValueError, '%10', '__mod__', (42,))
self.checkraises(OverflowError, '%*s', '__mod__',
(_testcapi.PY_SSIZE_T_MAX + 1, ''))
self.checkraises(OverflowError, '%.*f', '__mod__',
(_testcapi.INT_MAX + 1, 1. / 7))
# Issue 15989
self.checkraises(OverflowError, '%*s', '__mod__',
(1 << (_testcapi.PY_SSIZE_T_MAX.bit_length() + 1), ''))
self.checkraises(OverflowError, '%.*f', '__mod__',
(_testcapi.UINT_MAX + 1, 1. / 7))
class X(object): pass
self.checkraises(TypeError, 'abc', '__mod__', X())