Issue 5794: fix cPickle's unpickling of recursive tuples.
diff --git a/Lib/test/pickletester.py b/Lib/test/pickletester.py
index bc0be1f..ce49fdd 100644
--- a/Lib/test/pickletester.py
+++ b/Lib/test/pickletester.py
@@ -463,6 +463,16 @@
self.assertEqual(len(x), 1)
self.assert_(x is x[0])
+ def test_recursive_tuple(self):
+ t = ([],)
+ t[0].append(t)
+ for proto in protocols:
+ s = self.dumps(t, proto)
+ x = self.loads(s)
+ self.assertEqual(len(x), 1)
+ self.assertEqual(len(x[0]), 1)
+ self.assert_(x is x[0][0])
+
def test_recursive_dict(self):
d = {}
d[1] = d
diff --git a/Lib/test/test_cpickle.py b/Lib/test/test_cpickle.py
index 0541873..c240669 100644
--- a/Lib/test/test_cpickle.py
+++ b/Lib/test/test_cpickle.py
@@ -65,6 +65,11 @@
AbstractPickleTests.test_recursive_list,
self)
+ def test_recursive_tuple(self):
+ self.assertRaises(ValueError,
+ AbstractPickleTests.test_recursive_tuple,
+ self)
+
def test_recursive_inst(self):
self.assertRaises(ValueError,
AbstractPickleTests.test_recursive_inst,