pythonGH-96636: Remove all uses of NOTRACE_DISPATCH (pythonGH-96643)

Co-authored-by: Brandt Bucher <brandtbucher@gmail.com>
(cherry picked from commit aa3b4cf)

Lib/test/test_dynamic.py

@@ -1,6 +1,7 @@
 # Test the most dynamic corner cases of Python's runtime semantics.
 
 import builtins
+import sys
 import unittest
 
 from test.support import swap_item, swap_attr
@@ -146,5 +147,48 @@ def __missing__(self, key):
         for _ in range(30):
             self.assertEqual(sum_1000(), expected)
 
+
+class TestTracing(unittest.TestCase):
+
+    def setUp(self):
+        self.addCleanup(sys.settrace, sys.gettrace())
+        sys.settrace(None)
+
+    def test_after_specialization(self):
+
+        def trace(frame, event, arg):
+            return trace
+
+        turn_on_trace = False
+
+        class C:
+            def __init__(self, x):
+                self.x = x
+            def __del__(self):
+                if turn_on_trace:
+                    sys.settrace(trace)
+
+        def f():
+            # LOAD_GLOBAL[_BUILTIN] immediately follows the call to C.__del__
+            C(0).x, len
+
+        def g():
+            # BINARY_SUSCR[_LIST_INT] immediately follows the call to C.__del__
+            [0][C(0).x]
+
+        def h():
+            # BINARY_OP[_ADD_INT] immediately follows the call to C.__del__
+            0 + C(0).x
+
+        for func in (f, g, h):
+            with self.subTest(func.__name__):
+                for _ in range(58):
+                    func()
+                turn_on_trace = True
+                func()
+                sys.settrace(None)
+                turn_on_trace = False
+
+
 if __name__ == "__main__":
     unittest.main()

Misc/NEWS.d/next/Core and Builtins/2022-09-07-12-02-11.gh-issue-96636.YvN-K6.rst

@@ -0,0 +1,3 @@
+Ensure that tracing, ``sys.setrace()``, is turned on immediately. In
+pre-release versions of 3.11, some tracing events might have been lost when
+turning on tracing in a ``__del__`` method or interrupt.