From b0331c94c2a210d50e43d99b249ec83ee165e70c Mon Sep 17 00:00:00 2001
From: "Miss Islington (bot)"
 <31488909+miss-islington@users.noreply.github.com>
Date: Mon, 6 Nov 2017 16:45:19 -0800
Subject: bpo-31764: Prevent a crash in sqlite3.Cursor.close() in case the
 Cursor object is uninitialized (GH-3958) (#4303)

(cherry picked from commit edb13ae48c17210fa4b2d40a6833ca09db5c121b)
---
 Modules/_sqlite/cursor.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'Modules/_sqlite/cursor.c')

diff --git a/Modules/_sqlite/cursor.c b/Modules/_sqlite/cursor.c
index b6257a0b9d..8237340947 100644
--- a/Modules/_sqlite/cursor.c
+++ b/Modules/_sqlite/cursor.c
@@ -916,6 +916,11 @@ PyObject* pysqlite_noop(pysqlite_Connection* self, PyObject* args)
 
 PyObject* pysqlite_cursor_close(pysqlite_Cursor* self, PyObject* args)
 {
+    if (!self->connection) {
+        PyErr_SetString(pysqlite_ProgrammingError,
+                        "Base Cursor.__init__ not called.");
+        return NULL;
+    }
     if (!pysqlite_check_thread(self->connection) || !pysqlite_check_connection(self->connection)) {
         return NULL;
     }
-- 
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