1 files changed, 23 insertions, 0 deletions
diff --git a/Lib/test/test_opcache.py b/Lib/test/test_opcache.py
index e39b726..57fed5d 100644
--- a/Lib/test/test_opcache.py
+++ b/Lib/test/test_opcache.py
@@ -1,6 +1,29 @@
 import unittest
 
 
+class TestLoadSuperAttrCache(unittest.TestCase):
+    def test_descriptor_not_double_executed_on_spec_fail(self):
+        calls = []
+        class Descriptor:
+            def __get__(self, instance, owner):
+                calls.append((instance, owner))
+                return lambda: 1
+
+        class C:
+            d = Descriptor()
+
+        class D(C):
+            def f(self):
+                return super().d()
+
+        d = D()
+
+        self.assertEqual(d.f(), 1)  # warmup
+        calls.clear()
+        self.assertEqual(d.f(), 1)  # try to specialize
+        self.assertEqual(calls, [(d, D)])
+
+
 class TestLoadAttrCache(unittest.TestCase):
     def test_descriptor_added_after_optimization(self):
         class Descriptor: