Fixed #34816 -- Fixed GenericForeignKey crash when checking cache for primary keys with different types.

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/generic_relations_regress/tests.py b/tests/generic_relations_regress/tests.py
index b7ecb499eb..a3d54be1da 100644
--- a/tests/generic_relations_regress/tests.py
+++ b/tests/generic_relations_regress/tests.py
@@ -1,3 +1,4 @@
+from django.contrib.contenttypes.models import ContentType
 from django.db.models import ProtectedError, Q, Sum
 from django.forms.models import modelform_factory
 from django.test import TestCase, skipIfDBFeature
@@ -332,3 +333,14 @@ class GenericRelationTests(TestCase):
         self.assertSequenceEqual(qs, [link2])
         qs = Link.objects.exclude(places__name="Test Place 1")
         self.assertSequenceEqual(qs, [link2])
+
+    def test_check_cached_value_pk_different_type(self):
+        """Primary key is not checked if the content type doesn't match."""
+        board = Board.objects.create(name="some test")
+        oddrel = OddRelation1.objects.create(name="clink")
+        charlink = CharLink.objects.create(content_object=oddrel)
+        charlink = CharLink.objects.get(pk=charlink.pk)
+        self.assertEqual(charlink.content_object, oddrel)
+        charlink.object_id = board.pk
+        charlink.content_type_id = ContentType.objects.get_for_model(Board).id
+        self.assertEqual(charlink.content_object, board)