Add test for tracing when quickening calls to Python classes.

markshannon · markshannon · commit 1ee2f1c8abdd · 2022-06-07T11:55:55.000+01:00
diff --git a/Lib/test/test_sys_settrace.py b/Lib/test/test_sys_settrace.py
@@ -1570,6 +1570,28 @@ def func():
 
         self.run_and_compare(func, EXPECTED_EVENTS)
 
+    def test_correct_tracing_quickened_call_class_init(self):
+
+        class C:
+            def __init__(self):
+                self
+
+        def func():
+            C()
+
+        EXPECTED_EVENTS = [
+            (0, 'call'),
+            (1, 'line'),
+            (-3, 'call'),
+            (-2, 'line'),
+            (-2, 'return'),
+            (1, 'return')]
+
+        self.run_and_compare(func, EXPECTED_EVENTS)
+        # Quicken
+        for _ in range(100):
+            func()
+        self.run_and_compare(func, EXPECTED_EVENTS)
 
 EVENT_NAMES = [
     'call',
