Issue #4583: crash after resizing an array.array which has buffer exports.
diff --git a/Lib/test/test_array.py b/Lib/test/test_array.py
index ff9026a..5a505de 100755
--- a/Lib/test/test_array.py
+++ b/Lib/test/test_array.py
@@ -8,6 +8,7 @@
from weakref import proxy
import array, io, math
from pickle import loads, dumps
+import operator
class ArraySubclass(array.array):
pass
@@ -709,8 +710,23 @@
def test_buffer(self):
a = array.array(self.typecode, self.example)
- b = bytes(memoryview(a))
+ m = memoryview(a)
+ b = bytes(m)
+ self.assertEqual(b, a.tostring())
self.assertEqual(b[0], a.tostring()[0])
+ # Resizing is forbidden when there are buffer exports
+ self.assertRaises(BufferError, a.append, a[0])
+ self.assertRaises(BufferError, a.extend, a[0:1])
+ self.assertRaises(BufferError, a.remove, a[0])
+ self.assertRaises(BufferError, a.fromlist, a.tolist())
+ self.assertRaises(BufferError, a.fromstring, a.tostring())
+ if self.typecode == 'u':
+ self.assertRaises(BufferError, a.fromunicode, a.tounicode())
+ self.assertRaises(BufferError, operator.setitem, a, slice(0, 0), a)
+ self.assertRaises(BufferError, operator.delitem, a, 0)
+ self.assertRaises(BufferError, operator.delitem, a, slice(0, 1))
+ self.assertRaises(BufferError, operator.irepeat, a, 2)
+ self.assertRaises(BufferError, operator.irepeat, a, 0)
def test_weakref(self):
s = array.array(self.typecode, self.example)