Fixed #29447 -- Made RelatedManager.set() pass bulk argument to clear().

AUTHORS

@@ -35,6 +35,7 @@ answer newbie questions, and generally made Django that much better:
     Aleksi Häkli <aleksi.hakli@iki.fi>
     Alexander Dutton <dev@alexdutton.co.uk>
     Alexander Myodov <alex@myodov.com>
+    Alexandr Tatarinov <tatarinov1997@gmail.com>
     Alex Couper <http://alexcouper.com/>
     Alex Dedul
     Alex Gaynor <alex.gaynor@gmail.com>

django/db/models/fields/related_descriptors.py

@@ -708,7 +708,7 @@ def create_reverse_many_to_one_manager(superclass, rel):
                 db = router.db_for_write(self.model, instance=self.instance)
                 with transaction.atomic(using=db, savepoint=False):
                     if clear:
-                        self.clear()
+                        self.clear(bulk=bulk)
                         self.add(*objs, bulk=bulk)
                     else:
                         old_objs = set(self.using(db).all())

tests/many_to_one_null/tests.py

@@ -85,6 +85,11 @@ class ManyToOneNullTests(TestCase):
             ['<Article: Fourth>', '<Article: Second>', '<Article: Third>']
         )
 
+    def test_set_clear_non_bulk(self):
+        # 2 queries for clear(), 1 for add(), and 1 to select objects.
+        with self.assertNumQueries(4):
+            self.r.article_set.set([self.a], bulk=False, clear=True)
+
     def test_assign_clear_related_set(self):
         # Use descriptor assignment to allocate ForeignKey. Null is legal, so
         # existing members of the set that are not in the assignment set are