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bpo-44087: Disallow instantiation of sqlite3.Statement #26567

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Merged
pablogsal merged 3 commits into from
Jun 20, 2021
Merged

bpo-44087: Disallow instantiation of sqlite3.Statement #26567

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647bb9c
bpo-44087: sqlite3.Statement uses Py_TPFLAGS_DISALLOW_INSTANTIATION
Jun 6, 2021
81fc38b
Add test
Jun 6, 2021
a0a5003
Merge branch 'main' into sqlite-disallow-stmt-inst
Jun 17, 2021
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5 changes: 5 additions & 0 deletions 5 Lib/sqlite3/test/dbapi.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,7 @@
import threading
import unittest

from test.support import check_disallow_instantiation
from test.support.os_helper import TESTFN, unlink


Expand Down Expand Up @@ -104,6 +105,10 @@ def test_shared_cache_deprecated(self):
sqlite.enable_shared_cache(enable)
self.assertIn("dbapi.py", cm.filename)

def test_disallow_instantiation(self):
cx = sqlite.connect(":memory:")
check_disallow_instantiation(self, type(cx("select 1")))


class ConnectionTests(unittest.TestCase):

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2 changes: 1 addition & 1 deletion 2 Modules/_sqlite/statement.c
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Expand Up @@ -503,7 +503,7 @@ static PyType_Spec stmt_spec = {
.name = MODULE_NAME ".Statement",
.basicsize = sizeof(pysqlite_Statement),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_HAVE_GC |
Py_TPFLAGS_IMMUTABLETYPE),
Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_DISALLOW_INSTANTIATION),
.slots = stmt_slots,
};

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