From: Serhiy Storchaka <storchaka@gmail.com>
Date: Mon, 21 Jan 2013 09:42:57 +0000 (+0200)
Subject: Issue #16335: Fix integer overflow in unicode-escape decoder.
X-Git-Tag: v3.3.1rc1~322
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c35f3a9f619d0d4abd43d16ddc4767e2a30c3dce;p=python

Issue #16335: Fix integer overflow in unicode-escape decoder.
---

c35f3a9f619d0d4abd43d16ddc4767e2a30c3dce
diff --cc Lib/test/test_ucn.py
index 68a3219560,de36cc366f..ff4c4f1700
--- a/Lib/test/test_ucn.py
+++ b/Lib/test/test_ucn.py
@@@ -8,11 -8,9 +8,12 @@@ Modified for Python 2.0 by Fredrik Lund
  """#"
  
  import unittest
 +import unicodedata
+ import _testcapi
  
  from test import support
 +from http.client import HTTPException
 +from test.test_normalization import check_version
  
  class UnicodeNamesTest(unittest.TestCase):
  
diff --cc Objects/unicodeobject.c
index b57a8963b9,ddd8d53076..c30245d9f8
--- a/Objects/unicodeobject.c
+++ b/Objects/unicodeobject.c
@@@ -5696,8 -3923,8 +5696,9 @@@ PyUnicode_DecodeUnicodeEscape(const cha
                      /* found a name.  look it up in the unicode database */
                      message = "unknown Unicode character name";
                      s++;
-                     if (ucnhash_CAPI->getcode(NULL, start, (int)(s-start-1),
+                     if (s - start - 1 <= INT_MAX &&
 -                        ucnhash_CAPI->getcode(NULL, start, (int)(s-start-1), &chr))
++                        ucnhash_CAPI->getcode(NULL, start, (int)(s-start-1),
 +                                              &chr, 0))
                          goto store;
                  }
              }