From: Martin Panter <vadmium+py@gmail.com>
Date: Thu, 12 Jan 2017 11:54:59 +0000 (+0000)
Subject: Issues #1621, #29145: Test for str.join() overflow
X-Git-Tag: v3.6.1rc1~172^2
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b71c0956d0904cfdc271cd10d40385c730cf8bcb;p=python

Issues #1621, #29145: Test for str.join() overflow
---

diff --git a/Lib/test/test_unicode.py b/Lib/test/test_unicode.py
index f696a5bacf..3136ea1a1b 100644
--- a/Lib/test/test_unicode.py
+++ b/Lib/test/test_unicode.py
@@ -464,6 +464,13 @@ class UnicodeTest(string_tests.CommonTest,
         self.checkraises(TypeError, ' ', 'join', [1, 2, 3])
         self.checkraises(TypeError, ' ', 'join', ['1', '2', 3])
 
+    @unittest.skipIf(sys.maxsize > 2**32,
+        'needs too much memory on a 64-bit platform')
+    def test_join_overflow(self):
+        size = int(sys.maxsize**0.5) + 1
+        seq = ('A' * size,) * size
+        self.assertRaises(OverflowError, ''.join, seq)
+
     def test_replace(self):
         string_tests.CommonTest.test_replace(self)