[3.13] gh-142766: Clear frame when generator.close() is called (gh-142838)

Lib/test/test_generators.py

@@ -246,6 +246,33 @@ def loop():
  #This should not raise
  loop()
 
+ def test_close_clears_frame(self):
+ # gh-142766: Test that closing a generator clears its frame
+ class DetectDelete:
+ def __init__(self):
+ DetectDelete.deleted = False
+
+ def __del__(self):
+ DetectDelete.deleted = True
+
+ def generator(arg):
+ yield
+
+ # Test a freshly created generator (not suspended)
+ g = generator(DetectDelete())
+ g.close()
+ self.assertTrue(DetectDelete.deleted)
+
+ # Test a suspended generator
+ g = generator(DetectDelete())
+ next(g)
+ g.close()
+ self.assertTrue(DetectDelete.deleted)
+
+ # Clear via gi_frame.clear()
+ g = generator(DetectDelete())
+ g.gi_frame.clear()
+ self.assertTrue(DetectDelete.deleted)
 
 class ModifyUnderlyingIterableTest(unittest.TestCase):
  iterables = [

Misc/NEWS.d/next/Core and Builtins/2025-12-16-11-56-20.gh-issue-142766.Uy2HTm.rst

@@ -0,0 +1 @@
+Clear the frame of a generator when :meth:`generator.close` is called.

Objects/genobject.c

@@ -366,6 +366,7 @@ gen_close(PyGenObject *gen, PyObject *args)
 
  if (gen->gi_frame_state == FRAME_CREATED){
  gen->gi_frame_state = FRAME_COMPLETED;
+ gen_clear_frame(gen);
  Py_RETURN_NONE;
  }
  if (FRAME_STATE_FINISHED(gen->gi_frame_state)){