Issue #7561: Operations on empty bytearrays (such as `int(bytearray())`)
could crash in many places because of the PyByteArray_AS_STRING() macro
returning NULL. The macro now returns a statically allocated empty
string instead.
diff --git a/Lib/test/test_bytes.py b/Lib/test/test_bytes.py
index f2c9aa3..666894f 100644
--- a/Lib/test/test_bytes.py
+++ b/Lib/test/test_bytes.py
@@ -783,6 +783,13 @@
self.assertRaises(BufferError, delslice)
self.assertEquals(b, orig)
+ def test_empty_bytearray(self):
+ # Issue #7561: operations on empty bytearrays could crash in many
+ # situations, due to a fragile implementation of the
+ # PyByteArray_AS_STRING() C macro.
+ self.assertRaises(ValueError, int, bytearray(b''))
+
+
class AssortedBytesTest(unittest.TestCase):
#
# Test various combinations of bytes and bytearray