Concatenation on a long string breaks (SF #1526585).
diff --git a/Lib/test/test_bigaddrspace.py b/Lib/test/test_bigaddrspace.py
new file mode 100644
index 0000000..8c215fe
--- /dev/null
+++ b/Lib/test/test_bigaddrspace.py
@@ -0,0 +1,46 @@
+from test import test_support
+from test.test_support import bigaddrspacetest, MAX_Py_ssize_t
+
+import unittest
+import operator
+import sys
+
+
+class StrTest(unittest.TestCase):
+
+ @bigaddrspacetest
+ def test_concat(self):
+ s1 = 'x' * MAX_Py_ssize_t
+ self.assertRaises(OverflowError, operator.add, s1, '?')
+
+ @bigaddrspacetest
+ def test_optimized_concat(self):
+ x = 'x' * MAX_Py_ssize_t
+ try:
+ x = x + '?' # this statement uses a fast path in ceval.c
+ except OverflowError:
+ pass
+ else:
+ self.fail("should have raised OverflowError")
+ try:
+ x += '?' # this statement uses a fast path in ceval.c
+ except OverflowError:
+ pass
+ else:
+ self.fail("should have raised OverflowError")
+ self.assertEquals(len(x), MAX_Py_ssize_t)
+
+ ### the following test is pending a patch
+ # (http://mail.python.org/pipermail/python-dev/2006-July/067774.html)
+ #@bigaddrspacetest
+ #def test_repeat(self):
+ # self.assertRaises(OverflowError, operator.mul, 'x', MAX_Py_ssize_t + 1)
+
+
+def test_main():
+ test_support.run_unittest(StrTest)
+
+if __name__ == '__main__':
+ if len(sys.argv) > 1:
+ test_support.set_memlimit(sys.argv[1])
+ test_main()