Issue #27190: Merge from 3.5

Lib/sqlite3/test/dbapi.py

@@ -180,6 +180,12 @@ class ConnectionTests(unittest.TestCase):
             with self.assertRaises(sqlite.OperationalError):
                 cx.execute('insert into test(id) values(1)')
 
+    def CheckSameThreadErrorOnOldVersion(self):
+        if sqlite.sqlite_version_info >= (3, 3, 1):
+            self.skipTest('test needs sqlite3 versions older than 3.3.1')
+        with self.assertRaises(sqlite.NotSupportedError) as cm:
+            sqlite.connect(':memory:', check_same_thread=False)
+        self.assertEqual(str(cm.exception), 'shared connections not available')
 
 class CursorTests(unittest.TestCase):
     def setUp(self):

Misc/NEWS

@@ -10,6 +10,9 @@ What's New in Python 3.6.0 alpha 2
 Core and Builtins
 -----------------
 
+- Issue #27190: Raise NotSupportedError if sqlite3 is older than 3.3.1.
+  Patch by Dave Sawyer.
+
 - Issue #27286: Fixed compiling BUILD_MAP_UNPACK_WITH_CALL opcode.  Calling
   function with generalized unpacking (PEP 448) and conflicting keyword names
   could cause undefined behavior.

Modules/_sqlite/connection.c

@@ -164,6 +164,10 @@ int pysqlite_connection_init(pysqlite_Connection* self, PyObject* args, PyObject
 #ifdef WITH_THREAD
     self->thread_ident = PyThread_get_thread_ident();
 #endif
+    if (!check_same_thread && sqlite3_libversion_number() < 3003001) {
+        PyErr_SetString(pysqlite_NotSupportedError, "shared connections not available");
+        return -1;
+    }
     self->check_same_thread = check_same_thread;
 
     self->function_pinboard = PyDict_New();